Some standard content:
ICS 55. 040
National Standard of the People's Republic of China
GB/T12339-2008
Replaces GB/T12339—1990
Inner packaging materials for protection
Iancr packaging materials in preservationIssued on 2008-05-27
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandards Administration of Standardization of the People's Republic of China
Implementation on 2009-01-01
This standard is modified to adopt the Japanese Industrial Association Standard JIS21705-1979. Compared with J1SZ1705-1979, this standard has the following main differences: - In the classification of materials, the "number" is cancelled below the "grade"; - The requirements for the water resistance and resilience of the material are deleted: GB/T 12339-2008
- Added the pH value of the water extract of paper-based materials and the requirements for the moisture permeability of Class 1 A, C, and D materials: - Added the description of the main uses of various types, types, and grades of materials; - Added the requirements for moisture-proof, mildew-proof and non-oil-resistant packaging materials. This standard replaces GB/T12339-1990 "Protective Inner Packaging Materials". Compared with GB/T12339-1990, this standard has the following major changes: 1. The classification of protective inner packaging materials has been modified from the original three levels of "class, grade, number" to "class, type, grade";
The technical requirements for protective inner packaging materials have been improved, and the test requirements for the moisture content of Class 1A and B have been added, and the test requirements for the tensile strength of Class 1D have been added; the test requirements for the blocking resistance of Class 1C have been added; - The name of the test "adhesion" has been changed to "blocking resistance"; - The relevant contents of the test methods have been improved, and some test reference standards have been redefined; - The technical requirements for the temperature of Class 1B materials in the heat aging test have been modified, the scope of application of the materials used in the water permeability test method of the heat seal has been modified, and the technical requirements for the temperature of Class 1C materials in the blocking resistance test have been modified; - The technical requirements for the sieving mesh in the operation of Appendix A have been modified; - The contents of inspection rules and marking, packaging, transportation and storage have been deleted. Appendix A and Appendix B of this standard are normative appendices. This standard is proposed and managed by the National Technical Committee for Packaging Standardization (SAC/TC45). The drafting units of this standard are: Shenzhen Meiyingsen Environmental Protection Technology Co., Ltd., China Machinery Productivity Promotion Center, and Shenyang Anti-Rust Packaging Materials Co., Ltd.
The main drafters of this standard are: Huang Xue, Cai Shaoling, Dai, Zhang Xiao, and Liu Ping. The previous versions of the standard replaced by this standard are: GB/T12339-1990.
1 Scope
Protective inner packaging materials
This standard specifies the classification, technical requirements and test methods of inner packaging materials for protective packaging. This standard is applicable to protective inner packaging materials such as moisture-proof, rust-proof, and mildew-proof. 2 Normative references
GB/T 12339—2008
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version is applicable to this standard. CB/T450 Paper and paperboard sampling (GB/T450--2002, eqV1SO186:1994) GB/T453 Paper and paperboard tensile strength determination (constant continuous loading method) (GB/T453-2002, idtISO1924-1:1992) GB/T454 Paper quilting resistance determination (GB/T454-2002, idtISO2758:2001) GB/T455 Paper and paperboard tearing strength determination (GB/T455-2002, eQVISO1974:19S0) CGB/T462 Paper and paperboard moisture determination (GB/T462-2003, ISO287+1985, MOD) GB/T 1037
Test method for water vapor permeability of plastic film and sheet-cup method (GB/T1037--1988, ne4ASTME96:1980)
GB/T1040 (all parts)Determination of tensile properties of plasticsGB/T1545.2Determination of pH of aqueous extracts of paper, paperboard and pulp (GB/T1545.2-2003, 1SO6588:1981.MOD)GB/T2679.2 Determination of moisture permeability and crease moisture transport of paper and paperboard (disc method) (GB/T2679.2-1995, eqvISO2528:1974)
CB/T4456 Packaging Polyethylene Blown Film (GB/T4456-1996.eqJ15Z1702:1986) GB/T11999 Test method for tear resistance of plastic film and sheeting Elmendorf method (GB/T11999-1989, cqvISO 6383-2:1983)
GB/T16266 Test method for packaging materials Contact corrosion QB/T2358 Test method for heat seal strength of plastic film packaging bags 3 Classification
3.1 Protective inner packaging materials are divided into three categories according to their use: - Category 1: Oil-resistant packaging materials, divided into four types of A, B, C, and D according to their structure and material; - Category 2: Non-oil-resistant inner packaging materials, divided into three types of A, BC according to their material; - Category 3: Special-purpose inner packaging materials, divided into three types of A, BC according to their material. 3.2 Various protective inner packaging materials are divided into several grades according to their performance, see Table 1 for details. 3.3 Examples and uses
GB/T 12339—2008
Examples and uses of various protective inner packaging materials are shown in Table 1. Table 1 Examples and uses
Aluminum-plastic cloth-based composite materials
Aluminum-plastic composite materials
Plastic-aluminum-plastic composite materials
Aluminum-coated plastic film
Aluminum-plastic paper-based composite materials
Composite or co-extruded plastic film
Various plastic processed papers
Foil processed paper
Various adhesive tapes based on plastic
Various adhesive tapes based on paper
Polyester-promoted Triethylene sea film
Polyethylene (or polypropylene) film
Polyethylene film
Oil-proof paper
Imitation parchment
Industrial parchment
Neutral paraffin paper
Main purpose
Used for oil-resistant, moisture-proof, rust-proof and mildew-proof packaging of military and precision products, can be heat-sealed, long-term use
Used for oil-resistant and moisture-proof when moisture permeability and air permeability are required and light protection is not required. Rust-proof and anti-rust packaging, heat-sealable
Used for general oil-resistant, moisture-proof and rust-proof packaging, heat-sealable for oil-resistant, moisture-proof, rust-proof and anti-rust packaging, as well as packaging fastening, sealing and packaging
Used for oil-resistant, moisture-proof and anti-rust packaging with requirements of small permeability, heat-sealable
Used for oil-resistant, moisture-proof, rust-proof and anti-rust packaging with requirements of small permeability, heat-sealablebZxz.net
Used for oil-resistant, moisture-proof, rust-proof and anti-rust packaging with requirements of small permeability, heat-sealable
Used for oil-resistant, moisture-proof, rust-proof and anti-rust packaging with requirements of small permeability, heat-sealable for general oil, moisture-proof and rust-proof packaging
4 Technical requirements
Capacitor paper
Neutral packaging paper
Translucent packaging paper
Kraft paper
Strip Kraft paper
Vapor-phase anti-rust paper
Vapor-phase anti-rust film
Vapor-phase anti-rust adhesive tape
Table 1 (continued)
Main purpose
GB/T12339—2008
Used for moisture-proof and rust-proof packaging of spare parts for military and precision products. Used for moisture-proof and rust-proof packaging of electromechanical products
Used for anti-tampering packaging of common commodities
Used for vapor-phase anti-rust packaging
Various inner packaging materials for mildew inhibitors
Other special inner packaging materials such as
Sodium benzoate paper
Anti-static, anti-magnetic, anti-radiation, etc.
Special inner packaging materials
Used for anti-riot packaging
Used for moisture-proof and rust-proof packaging with special requirements. For example, sodium benzoate paper is used for rust-proof packaging of gold lip products,Special purpose for contact rust prevention
The protective inner packaging material should be flat, uniform, and clean, and all technical indicators should meet the requirements of Table 2. 3
GB/T 12339—2008
Chengliankou
005z000g
Mechanical properties
GB/T12339—2008
GB/T12339—2008
5 Test methods
5.1 Sampling and pretreatment
All materials containing paper or cloth base shall be sampled and pretreated in accordance with the provisions of GB/T450, and other materials shall be sampled and pretreated in accordance with the provisions of GB/T4456.
5.2 Corrosion
Mainly check whether the inner packaging material will corrode the metal in contact. According to the provisions of GB/T16266, 5.3 Moisture content
According to the provisions of GB/T462.
5.4 pH value of water extract
According to the provisions of CB/T1545.2.
5.5 Oil resistance
According to the provisions of Appendix A.
5.6 Moisture permeability
All materials containing paper or cloth base shall be tested according to the provisions of GB/T2679.2, and other materials shall be tested according to the provisions of GB/T1037. 5.7 Tensile strength
All materials containing paper or cloth base shall be tested according to the provisions of GB/T453. Other materials shall be tested according to the provisions of GB/T1040. 5.8 Burst resistance
According to the provisions of GB/T454.
5.9 Tear strength
All materials containing paper or cloth base shall be tested according to the provisions of GB/T455, and other materials shall be tested according to the provisions of GB/T11999: 5.10 Breaking length
According to the provisions of GB/T453.
5.11 Heat aging
Ten pieces of 250m×300mm in the longitudinal and transverse directions shall be cut from the sample, for a total of 20 pieces. The first type A type shall be placed in a blast oven at 70℃±1℃, and the first type C type shall be placed in a blast oven at 57℃±1℃, with the short side hanging downward. Be careful not to contact the bottom of the oven. After 336h (14d), place it in a constant temperature oven at a temperature of 23℃±1℃ and a relative humidity of 50%±2% for 24h, and then check whether there are any abnormal phenomena such as delamination, cracks, bubbling, melting, rupture, etc. visible to the naked eye on the surface of the sample, and measure the longitudinal and transverse dimensions. 5.12 Low temperature flexibility
Cut 10 pieces of 100mm×300mm samples from the longitudinal and transverse directions of the sample, a total of 20 pieces. Place the first type A in a temperature environment of -30℃±5℃, and the first type B in a temperature environment of -5℃±2℃ for 3h: Prepare a round steel bar with a diameter of 6mm fixed at both ends in advance, and cool it to the same temperature as the sample. Take out the temperature-adjusted sample and immediately fold it in half across the round steel bar in the length direction at room temperature, so that the oil-resistant surface of the sample is folded inward. Make the folded sample perpendicular to the axis of the steel bar and hold it on the round steel bar for 3 times. Open the sample and check with the naked eye for delamination. 5.13 Heat sealing strength
Perform according to the provisions of QB/T2358.
5.14 Oil resistance at the sealed part
Ten pieces of the sample with a size of 150mm×200mm are cut, and the oil-resistant surfaces of each two pieces are attached to each other. The 150mm side is heat-sealed and the 200mm sides are heat-sealed. The sealing width is more than 10mm, and 5 bags are made. 80mL of oil solution is injected into each bag. The oil solution is an oil solution in which 1g of red soluble dye is dissolved in every 100nL of low-viscosity anti-rust lubricating oil [the kinematic viscosity at 37.8℃ is (20±2)mm2/s]. The residual air in the bag is squeezed out by hand and the bag is sealed. The bag is sandwiched between two pieces of white paper with a diameter greater than 150mm 6
GB/T12339—2008
and placed in a metal plate or porcelain plate, covered with a glass plate, and a 1kg weight is pressed on the glass plate, and then placed in a drying oven at 70℃±2℃ for? After 24 hours, take out the bag and observe with naked eyes whether there is oil seepage on the white filter paper. 5.15 Water permeability at the seal
Perform according to the provisions of Appendix B.
5.16 Adhesion resistance
Cut 20 pieces of the sample with a size of 100mm×100mm, overlap the oil-resistant surface of any two pieces and overlap the oil-resistant surface and the other surface in five groups, and place them flat on the flat glass. In the middle of each group, a felt with a size of 50mm×50mm and a thickness of 5mm is placed, and a 5k weight is placed on the felt, and then placed in an oven. The oven temperature for Class 1A materials is 70℃±1℃, and the oven temperature for Class 1C materials is 40℃±1℃. After 20 hours, remove the weight and felt, and place them in a constant temperature and humidity chamber with a temperature of 23℃±1℃ and a relative humidity of 50%±2%. After cooling, separate the two pieces of each group and check whether the sample has visible peeling and cracking. GB/T12339—2008
Appendix A
(Normative Appendix)
Oil resistance test method
A.1 The oil resistance test method is used to check the oil resistance of various materials in Class 1. A.2 Take 100mL of turpentine, add 5g of anhydrous calcium chloride for drying and 1g of oil-soluble red pigment, cover the container stopper, shake it thoroughly to mix, let it stand for 10 minutes, and filter it with white qualitative filter paper. Take 100g of the above filtrate, add 25g of lithium-based grease to Class 1 A and BC materials, and add 200g of mineral oil with a viscosity of 75~205 to Class 1 D materials, shake it thoroughly to mix until the grease or mineral oil is completely dissolved as a reagent. A.3 Take Class 1 material, cut it into 10 pieces of 100mm×100mm test pieces, fold them diagonally with the oil-resistant surface as the inner side, and place them on a flat glass. With the midpoint of the fold as the center, place a weight with a bottom diameter of 100mm and a mass of 2.5kg. After 30s, remove the weight, open the sample, and fold it in the other diagonal direction. Repeat the above operation and this sample will be used as the test sample. A.4 Place the sample prepared in Chapter A.3 with the oil-resistant side facing up on a round white qualitative filter paper with a diameter of more than 150mm. All corners of the sample fit tightly with the filter paper below. With the intersection of the fold as the center, place a metal ring with an outer diameter of 145mm±2mm, an inner diameter of 9cmrm±2tm, and a mass of 100g~250g.
Put a bottomless cylinder with an inner diameter of 25mm and a height of 25mm on the intersection of the folds of the Class 1 A, B or C material sample. Load 5g of sand particles that pass the standard push sieve of 840μm and fail to pass 590μm: use a dropper to drop 1.5mL of the reagent in Chapter A.2 on the sand particles (Type 1D does not add sand particles, only fill the reagent in Chapter A.2 to the intersection of the folds). After leaving it for 24 hours, use the naked eye to observe whether there are oil stains on the round white qualitative filter paper under the sample: the above operations should be carried out in an environment of 23℃±1℃ and relative humidity of 50%±2%. 8
B.1 Reagents
Appendix B
(Normative Appendix)
Test method for oil resistance at heat seal
GB/T123392008
Add 1g of dioctyl sodium sulfosuccinate and 1g of BC (for Class 1 A materials) or 1g of erythrosine B (for Class 1 C materials) to 98mL of distilled water, shake thoroughly to mix and dissolve. Dilute one portion of the mixture with 4 portions of distilled water as a reagent. B.2 Test specimen
Make 5 bags according to the method in 5.14.
B.3 Operation
Put thin flakes of white qualitative filter paper into the small bag in Chapter B.2 of this article, filling it up without being tight, and heat-seal the bag. Then, immerse the sealed bag in the reagent prepared in step B.1 at 23℃±1℃, with the bag 25mra away from the liquid surface: take it out after 24 hours, open the seal and check with the naked eye whether there is any stain on the white qualitative filter paper. GB/T12339-2008
National Standard of the People's Republic of China
Protective Inner Packaging Materials
GB/T 12339—2008
Published by China Standard Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal code: 100045
Website: spc.net.cn
Tel: 6852394668517548
Printed by Anhuangdao Printing Factory of China Standard Press Distributed by Xinhua Bookstores in various regions
Format: 880×12301/16 Printing sheet 1 Word count: 18,000 words First edition in August 2008 First printing in August 2008*
Book number: 155066·1-32384 Price: RMB 16.00 Any printing or binding errors
Replaced by our publishing center
Copyright reserved. Infringements must be investigated
Report telephone: (010) 6853353300 yuan If there is any printing error
It will be replaced by our distribution center
Copyright infringement will be investigated
Report phone number: (010) 6853353300 yuan If there is any printing error
It will be replaced by our distribution center
Copyright infringement will be investigated
Report phone number: (010) 685335332 Corrosion resistance
Mainly check whether the inner packaging material will corrode the metal in contact. According to the provisions of GB/T16266, 5.3 Moisture
According to the provisions of GB/T462.
5.4 pH value of water extract
According to the provisions of CB/T1545.2.
5.5 Oil resistance
According to the provisions of Appendix A.
5.6 Moisture permeability
All materials containing paper or cloth base shall be tested according to the provisions of GB/T2679.2, and other materials shall be tested according to the provisions of GB/T1037. 5.7 Tensile strength
All materials containing paper or cloth base shall be tested according to the provisions of GB/T453. Other materials shall be tested according to the provisions of GB/T1040. 5.8 Burst resistance
According to the provisions of GB/T454.
5.9 Tear strength
All materials containing paper or cloth base shall be tested according to the provisions of GB/T455, and other materials shall be tested according to the provisions of GB/T11999: 5.10 Breaking length
According to the provisions of GB/T453.
5.11 Heat aging
Ten pieces of 250m×300mm in the longitudinal and transverse directions shall be cut from the sample, for a total of 20 pieces. The first type A type shall be placed in a blast oven at 70℃±1℃, and the first type C type shall be placed in a blast oven at 57℃±1℃, with the short side hanging downward. Be careful not to contact the bottom of the oven. After 336h (14d), place it in a constant temperature oven at a temperature of 23℃±1℃ and a relative humidity of 50%±2% for 24h, and then check whether there are any abnormal phenomena such as delamination, cracks, bubbling, melting, rupture, etc. visible to the naked eye on the surface of the sample, and measure the longitudinal and transverse dimensions. 5.12 Low temperature flexibility
Cut 10 pieces of 100mm×300mm samples from the longitudinal and transverse directions of the sample, a total of 20 pieces. Place the first type A in a temperature environment of -30℃±5℃, and the first type B in a temperature environment of -5℃±2℃ for 3h: Prepare a round steel bar with a diameter of 6mm fixed at both ends in advance, and cool it to the same temperature as the sample. Take out the temperature-adjusted sample and immediately fold it in half across the round steel bar in the length direction at room temperature, so that the oil-resistant surface of the sample is folded inward. Make the folded sample perpendicular to the axis of the steel bar and hold it on the round steel bar for 3 times. Open the sample and check with the naked eye for delamination. 5.13 Heat sealing strength
Perform according to the provisions of QB/T2358.
5.14 Oil resistance at the sealed part
Ten pieces of the sample with a size of 150mm×200mm are cut, and the oil-resistant surfaces of each two pieces are attached to each other. The 150mm side is heat-sealed and the 200mm sides are heat-sealed. The sealing width is more than 10mm, and 5 bags are made. 80mL of oil solution is injected into each bag. The oil solution is an oil solution in which 1g of red soluble dye is dissolved in every 100nL of low-viscosity anti-rust lubricating oil [the kinematic viscosity at 37.8℃ is (20±2)mm2/s]. The residual air in the bag is squeezed out by hand and the bag is sealed. The bag is sandwiched between two pieces of white paper with a diameter greater than 150mm 6
GB/T12339—2008
and placed in a metal plate or porcelain plate, covered with a glass plate, and a 1kg weight is pressed on the glass plate, and then placed in a drying oven at 70℃±2℃ for? After 24 hours, take out the bag and observe with naked eyes whether there is oil seepage on the white filter paper. 5.15 Water permeability at the seal
Perform according to the provisions of Appendix B.
5.16 Adhesion resistance
Cut 20 pieces of the sample with a size of 100mm×100mm, overlap the oil-resistant surface of any two pieces and overlap the oil-resistant surface and the other surface in five groups, and place them flat on the flat glass. In the middle of each group, a felt with a size of 50mm×50mm and a thickness of 5mm is placed, and a 5k weight is placed on the felt, and then placed in an oven. The oven temperature for Class 1A materials is 70℃±1℃, and the oven temperature for Class 1C materials is 40℃±1℃. After 20 hours, remove the weight and felt, and place them in a constant temperature and humidity chamber with a temperature of 23℃±1℃ and a relative humidity of 50%±2%. After cooling, separate the two pieces of each group and check whether the sample has visible peeling and cracking. GB/T12339—2008
Appendix A
(Normative Appendix)
Oil resistance test method
A.1 The oil resistance test method is used to check the oil resistance of various materials in Class 1. A.2 Take 100mL of turpentine, add 5g of anhydrous calcium chloride for drying and 1g of oil-soluble red pigment, cover the container stopper, shake it thoroughly to mix, let it stand for 10 minutes, and filter it with white qualitative filter paper. Take 100g of the above filtrate, add 25g of lithium-based grease to Class 1 A and BC materials, and add 200g of mineral oil with a viscosity of 75~205 to Class 1 D materials, shake it thoroughly to mix until the grease or mineral oil is completely dissolved as a reagent. A.3 Take Class 1 material, cut it into 10 pieces of 100mm×100mm test pieces, fold them diagonally with the oil-resistant surface as the inner side, and place them on a flat glass. With the midpoint of the fold as the center, place a weight with a bottom diameter of 100mm and a mass of 2.5kg. After 30s, remove the weight, open the sample, and fold it in the other diagonal direction. Repeat the above operation and this sample will be used as the test sample. A.4 Place the sample prepared in Chapter A.3 with the oil-resistant side facing up on a round white qualitative filter paper with a diameter of more than 150mm. All corners of the sample fit tightly with the filter paper below. With the intersection of the fold as the center, place a metal ring with an outer diameter of 145mm±2mm, an inner diameter of 9cmrm±2tm, and a mass of 100g~250g.
Put a bottomless cylinder with an inner diameter of 25mm and a height of 25mm on the intersection of the folds of the Class 1 A, B or C material sample. Load 5g of sand particles that pass the standard push sieve of 840μm and fail to pass 590μm: use a dropper to drop 1.5mL of the reagent in Chapter A.2 on the sand particles (Type 1D does not add sand particles, only fill the reagent in Chapter A.2 to the intersection of the folds). After leaving it for 24 hours, use the naked eye to observe whether there are oil stains on the round white qualitative filter paper under the sample: the above operations should be carried out in an environment of 23℃±1℃ and relative humidity of 50%±2%. 8
B.1 Reagents
Appendix B
(Normative Appendix)
Test method for oil resistance at heat seal
GB/T123392008
Add 1g of dioctyl sodium sulfosuccinate and 1g of BC (for Class 1 A materials) or 1g of erythrosine B (for Class 1 C materials) to 98mL of distilled water, shake thoroughly to mix and dissolve. Dilute one portion of the mixture with 4 portions of distilled water as a reagent. B.2 Test specimen
Make 5 bags according to the method in 5.14.
B.3 Operation
Put thin flakes of white qualitative filter paper into the small bag in Chapter B.2 of this article, filling it up without being tight, and heat-seal the bag. Then, immerse the sealed bag in the reagent prepared in step B.1 at 23℃±1℃, with the bag 25mra away from the liquid surface: take it out after 24 hours, open the seal and check with the naked eye whether there is any stain on the white qualitative filter paper. GB/T12339-2008
National Standard of the People's Republic of China
Protective Inner Packaging Materials
GB/T 12339—2008
Published by China Standard Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal code: 100045
Website: spc.net.cn
Tel: 6852394668517548
Printed by Anhuangdao Printing Factory of China Standard Press Distributed by Xinhua Bookstores in various regions
Format: 880×12301/16 Printing sheet 1 Word count: 18,000 words First edition in August 2008 First printing in August 2008*
Book number: 155066·1-32384 Price: RMB 16.00 Any printing or binding errors
Replaced by our publishing center
Copyright reserved. Infringements must be investigated
Report telephone: (010) 685335332 Corrosion resistance
Mainly check whether the inner packaging material will corrode the metal in contact. According to the provisions of GB/T16266, 5.3 Moisture
According to the provisions of GB/T462.
5.4 pH value of water extract
According to the provisions of CB/T1545.2.
5.5 Oil resistance
According to the provisions of Appendix A.
5.6 Moisture permeability
All materials containing paper or cloth base shall be tested according to the provisions of GB/T2679.2, and other materials shall be tested according to the provisions of GB/T1037. 5.7 Tensile strength
All materials containing paper or cloth base shall be tested according to the provisions of GB/T453. Other materials shall be tested according to the provisions of GB/T1040. 5.8 Burst resistance
According to the provisions of GB/T454.
5.9 Tear strength
All materials containing paper or cloth base shall be tested according to the provisions of GB/T455, and other materials shall be tested according to the provisions of GB/T11999: 5.10 Breaking length
According to the provisions of GB/T453.
5.11 Heat aging
Ten pieces of 250m×300mm in the longitudinal and transverse directions shall be cut from the sample, for a total of 20 pieces. The first type A type shall be placed in a blast oven at 70℃±1℃, and the first type C type shall be placed in a blast oven at 57℃±1℃, with the short side hanging downward. Be careful not to contact the bottom of the oven. After 336h (14d), place it in a constant temperature oven at a temperature of 23℃±1℃ and a relative humidity of 50%±2% for 24h, and then check whether there are any abnormal phenomena such as delamination, cracks, bubbling, melting, rupture, etc. visible to the naked eye on the surface of the sample, and measure the longitudinal and transverse dimensions. 5.12 Low temperature flexibility
Cut 10 pieces of 100mm×300mm samples from the longitudinal and transverse directions of the sample, a total of 20 pieces. Place the first type A in a temperature environment of -30℃±5℃, and the first type B in a temperature environment of -5℃±2℃ for 3h: Prepare a round steel bar with a diameter of 6mm fixed at both ends in advance, and cool it to the same temperature as the sample. Take out the temperature-adjusted sample and immediately fold it in half across the round steel bar in the length direction at room temperature, so that the oil-resistant surface of the sample is folded inward. Make the folded sample perpendicular to the axis of the steel bar and hold it on the round steel bar for 3 times. Open the sample and check with the naked eye for delamination. 5.13 Heat sealing strength
Perform according to the provisions of QB/T2358.
5.14 Oil resistance at the sealed part
Ten pieces of the sample with a size of 150mm×200mm are cut, and the oil-resistant surfaces of each two pieces are attached to each other. The 150mm side is heat-sealed and the 200mm sides are heat-sealed. The sealing width is more than 10mm, and 5 bags are made. 80mL of oil solution is injected into each bag. The oil solution is an oil solution in which 1g of red soluble dye is dissolved in every 100nL of low-viscosity anti-rust lubricating oil [the kinematic viscosity at 37.8℃ is (20±2)mm2/s]. The residual air in the bag is squeezed out by hand and the bag is sealed. The bag is sandwiched between two pieces of white paper with a diameter greater than 150mm 6
GB/T12339—2008
and placed in a metal plate or porcelain plate, covered with a glass plate, and a 1kg weight is pressed on the glass plate, and then placed in a drying oven at 70℃±2℃ for? After 24 hours, take out the bag and observe with naked eyes whether there is oil seepage on the white filter paper. 5.15 Water permeability at the seal
Perform according to the provisions of Appendix B.
5.16 Adhesion resistance
Cut 20 pieces of the sample with a size of 100mm×100mm, overlap the oil-resistant surface of any two pieces and overlap the oil-resistant surface and the other surface in five groups, and place them flat on the flat glass. In the middle of each group, a felt with a size of 50mm×50mm and a thickness of 5mm is placed, and a 5k weight is placed on the felt, and then placed in an oven. The oven temperature for Class 1A materials is 70℃±1℃, and the oven temperature for Class 1C materials is 40℃±1℃. After 20 hours, remove the weight and felt, and place them in a constant temperature and humidity chamber with a temperature of 23℃±1℃ and a relative humidity of 50%±2%. After cooling, separate the two pieces of each group and check whether the sample has visible peeling and cracking. GB/T12339—2008
Appendix A
(Normative Appendix)
Oil resistance test method
A.1 The oil resistance test method is used to check the oil resistance of various materials in Class 1. A.2 Take 100mL of turpentine, add 5g of anhydrous calcium chloride for drying and 1g of oil-soluble red pigment, cover the container stopper, shake it thoroughly to mix, let it stand for 10 minutes, and filter it with white qualitative filter paper. Take 100g of the above filtrate, add 25g of lithium-based grease to Class 1 A and BC materials, and add 200g of mineral oil with a viscosity of 75~205 to Class 1 D materials, shake it thoroughly to mix until the grease or mineral oil is completely dissolved as a reagent. A.3 Take Class 1 material, cut it into 10 pieces of 100mm×100mm test pieces, fold them diagonally with the oil-resistant surface as the inner side, and place them on a flat glass. With the midpoint of the fold as the center, place a weight with a bottom diameter of 100mm and a mass of 2.5kg. After 30s, remove the weight, open the sample, and fold it in the other diagonal direction. Repeat the above operation and this sample will be used as the test sample. A.4 Place the sample prepared in Chapter A.3 with the oil-resistant side facing up on a round white qualitative filter paper with a diameter of more than 150mm. All corners of the sample fit tightly with the filter paper below. With the intersection of the fold as the center, place a metal ring with an outer diameter of 145mm±2mm, an inner diameter of 9cmrm±2tm, and a mass of 100g~250g.
Put a bottomless cylinder with an inner diameter of 25mm and a height of 25mm on the intersection of the folds of the Class 1 A, B or C material sample. Load 5g of sand particles that pass the standard push sieve of 840μm and fail to pass 590μm: use a dropper to drop 1.5mL of the reagent in Chapter A.2 on the sand particles (Type 1D does not add sand particles, only fill the reagent in Chapter A.2 to the intersection of the folds). After leaving it for 24 hours, use the naked eye to observe whether there are oil stains on the round white qualitative filter paper under the sample: the above operations should be carried out in an environment of 23℃±1℃ and relative humidity of 50%±2%. 8
B.1 Reagents
Appendix B
(Normative Appendix)
Test method for oil resistance at heat seal
GB/T123392008
Add 1g of dioctyl sodium sulfosuccinate and 1g of BC (for Class 1 A materials) or 1g of erythrosine B (for Class 1 C materials) to 98mL of distilled water, shake thoroughly to mix and dissolve. Dilute one portion of the mixture with 4 portions of distilled water as a reagent. B.2 Test specimen
Make 5 bags according to the method in 5.14.
B.3 Operation
Put thin flakes of white qualitative filter paper into the small bag in Chapter B.2 of this article, filling it up without being tight, and heat-seal the bag. Then, immerse the sealed bag in the reagent prepared in step B.1 at 23℃±1℃, with the bag 25mra away from the liquid surface: take it out after 24 hours, open the seal and check with the naked eye whether there is any stain on the white qualitative filter paper. GB/T12339-2008
National Standard of the People's Republic of China
Protective Inner Packaging Materials
GB/T 12339—2008
Published by China Standard Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal code: 100045
Website: spc.net.cn
Tel: 6852394668517548
Printed by Anhuangdao Printing Factory of China Standard Press Distributed by Xinhua Bookstores in various regions
Format: 880×12301/16 Printing sheet 1 Word count: 18,000 words First edition in August 2008 First printing in August 2008*
Book number: 155066·1-32384 Price: RMB 16.00 Any printing or binding errors
Replaced by our publishing center
Copyright reserved. Infringements must be investigated
Report telephone: (010) 685335338 Burst resistance
According to the provisions of GB/T454.
5.9 Tear strength
All materials containing paper or cloth base shall be tested according to the provisions of GB/T455, and other materials shall be tested according to the provisions of GB/T11999: 5.10 Breaking length
According to the provisions of GB/T453.
5.11 Heat aging
Ten pieces of 250m×300mm in the longitudinal and transverse directions shall be cut, for a total of 20 pieces, and the first type A shall be placed in a blast oven at 70℃±1℃, and the first type C shall be placed in a blast oven at 57℃±1℃, with the short side hanging downward. Be careful not to contact the bottom of the box. After 336h (14d), place it in a constant temperature box with a temperature of 23℃±1℃ and a relative humidity of 50%±2% for 24h. Then check whether there are any abnormal phenomena such as delamination, cracks, bubbling, melting, and rupture visible to the naked eye on the surface of the sample, and measure the longitudinal and transverse dimensions. 5.12 Low temperature flexibility
Cut 10 pieces of the sample with a size of 100mm×300mm from the longitudinal and transverse directions of the sample, for a total of 20 pieces. The first type A is placed in a temperature environment of -30℃±5℃, and the first type B is placed in a temperature environment of -5℃±2℃ for 3h: Prepare a round steel bar with a diameter of 6mm fixed at both ends in advance and cool it to the same temperature as the sample. Take out the temperature-adjusted sample and immediately fold it in half across the round steel bar in the length direction at room temperature, so that the oil-resistant surface of the sample is folded inward. Make the folded sample and the axis of the steel bar perpendicular to each other and hold it on the round steel bar 3 times. Open the sample and check with naked eyes for delamination. 5.13 Heat seal strength
Perform according to the provisions of QB/T2358.
5.14 Oil resistance at the seal
Cut 10 pieces of the sample with a size of 150mm×200mm, and stick the oil-resistant surfaces of each two pieces together. Heat seal the 150mm side and the 200mm sides, and the sealing width is more than 10mm to make 5 bags. Inject 80mL of oil solution into each bag. The oil solution is an oil solution in which 1g of red soluble dye is dissolved in every 100nL of low-viscosity anti-rust lubricating oil [the kinematic viscosity at 37.8℃ is (20±2)mm2/s]. Squeeze out the residual air in the bag by hand and seal it. The bag is sandwiched between two pieces of white filter paper with a diameter greater than 150mm6
GB/T12339—2008
and placed in a metal plate or porcelain plate, covered with a glass plate, and a 1kg weight is pressed on the glass plate, and then placed in a drying oven at 70℃±2℃. After ?h, take out the bag and observe with the naked eye whether there is oil seepage on the white filter paper. 5.15 Water permeability at the sealing point
According to the provisions of Appendix B.
5.16 Adhesion resistance
Cut 20 pieces of the sample with a size of 100mm×100mm, overlap the oil-resistant surface of any two pieces and overlap the oil-resistant surface and the other side in five groups, and place them flat on the flat glass. Put a felt with a size of 50mm×50mm and a thickness of 5mm in the middle of each group, put a 5k weight on the felt, and then place it in the oven. The oven temperature for Class 1A materials is 70℃±1℃, and the oven temperature for Class 1C materials is 40℃±1℃. After 20h, remove the weight and felt, and place in a constant temperature and humidity chamber at a temperature of 23℃±1℃ and a relative humidity of 50%±2%. After cooling, separate the two pieces of each group and check whether the sample has visible peeling and cracking. GB/T12339—2008
Appendix A
(Normative Appendix)
Oil resistance test method
A.1 The oil resistance test method is used to check the oil resistance of various materials in Class 1. A.2 Take 100mL of turpentine, add 5g of anhydrous calcium chloride for drying and 1g of oil-soluble red pigment, cover the container stopper, shake well to mix, let it stand for 10 minutes, and filter it with white qualitative filter paper. Take 100g of the above filtrate, add 25g of lithium-based grease to materials of type 1A and BC, and add 200g of mineral oil with a viscosity of 75~205 to materials of type 1D, and shake thoroughly to mix until the grease or mineral oil is completely dissolved to serve as a reagent. A.3 Take material of type 1, cut into 10 pieces of 100mm×100mm test pieces, fold them diagonally with the oil-resistant surface as the inner side, and place them on a flat glass. Place a weight with a bottom diameter of 100mm and a mass of 2.5kg at the center of the fold. After 30s, remove the weight, open the sample, and fold it in another diagonal direction. Repeat the above operation and this sample is used as the test sample. A.4 Place the sample prepared in Chapter A.3 with the oil-resistant surface facing up on a round white qualitative filter paper with a diameter of more than 150mm. All corners of the sample are tightly fitted with the filter paper below. With the intersection of the fold as the center, place a metal ring with an outer diameter of 145mm ± 2mm, an inner diameter of 9cmrm ± 2tm, and a mass of 100g ~ 250g.
Put a bottomless cylinder with an inner diameter of 25mm and a height of 25mm on the intersection of the fold of the sample of Class 1 A, B or C materials. Load 5g of sand particles that pass the standard push sieve of 840μm and do not pass 590μm: Use a dropper to drop 1.5mL of the reagent in Chapter A.2 on the sand particles (no sand particles are added to Class 1 D, only the reagent in Chapter A.2 is filled to the intersection of the fold). After 24 hours, use the naked eye to observe whether there are oil stains on the round white qualitative filter paper under the sample: The above operations should be carried out in an environment of 23℃ ± 1℃ and relative humidity of 50% ± 2%. 8
B.1 Reagents
Appendix B
(Normative Appendix)
Test method for oil resistance at heat seal
GB/T123392008
Add 1g of dioctyl sodium sulfosuccinate and 1g of BC (for Class 1 A materials) or 1g of erythrosine B (for Class 1 C materials) to 98mL of distilled water, shake thoroughly to mix and dissolve. Dilute one portion of the mixture with 4 portions of distilled water as a reagent. B.2 Test specimen
Make 5 bags according to the method in 5.14.
B.3 Operation
Put thin flakes of white qualitative filter paper into the small bag in Chapter B.2 of this article, filling it up without being tight, and heat-seal the bag. Then, immerse the sealed bag in the reagent prepared in step B.1 at 23℃±1℃, with the bag 25mra away from the liquid surface: take it out after 24 hours, open the seal and check with the naked eye whether there is any stain on the white qualitative filter paper. GB/T12339-2008
National Standard of the People's Republic of China
Protective Inner Packaging Materials
GB/T 12339—2008
Published by China Standard Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal code: 100045
Website: spc.net.cn
Tel: 6852394668517548
Printed by Anhuangdao Printing Factory of China Standard Press Distributed by Xinhua Bookstores in various regions
Format: 880×12301/16 Printing sheet 1 Word count: 18,000 words First edition in August 2008 First printing in August 2008*
Book number: 155066·1-32384 Price: RMB 16.00 Any printing or binding errors
Replaced by our publishing center
Copyright reserved. Infringements must be investigated
Report telephone: (010) 685335338 Burst resistance
According to the provisions of GB/T454.
5.9 Tear strength
All materials containing paper or cloth base shall be tested according to the provisions of GB/T455, and other materials shall be tested according to the provisions of GB/T11999: 5.10 Breaking length
According to the provisions of GB/T453.
5.11 Heat aging
Ten pieces of 250m×300mm in the longitudinal and transverse directions shall be cut, for a total of 20 pieces, and the first type A shall be placed in a blast oven at 70℃±1℃, and the first type C shall be placed in a blast oven at 57℃±1℃, with the short side hanging downward. Be careful not to contact the bottom of the box. After 336h (14d), place it in a constant temperature box with a temperature of 23℃±1℃ and a relative humidity of 50%±2% for 24h. Then check whether there are any abnormal phenomena such as delamination, cracks, bubbling, melting, and rupture visible to the naked eye on the surface of the sample, and measure the longitudinal and transverse dimensions. 5.12 Low temperature flexibility
Cut 10 pieces of the sample with a size of 100mm×300mm from the longitudinal and transverse directions of the sample, for a total of 20 pieces. The first type A is placed in a temperature environment of -30℃±5℃, and the first type B is placed in a temperature environment of -5℃±2℃ for 3h: Prepare a round steel bar with a diameter of 6mm fixed at both ends in advance and cool it to the same temperature as the sample. Take out the temperature-adjusted sample and immediately fold it in half across the round steel bar in the length direction at room temperature, so that the oil-resistant surface of the sample is folded inward. Make the folded sample and the axis of the steel bar perpendicular to each other and hold it on the round steel bar 3 times. Open the sample and check with naked eyes for delamination. 5.13 Heat seal strength
Perform according to the provisions of QB/T2358.
5.14 Oil resistance at the seal
Cut 10 pieces of the sample with a size of 150mm×200mm, and stick the oil-resistant surfaces of each two pieces together. Heat seal the 150mm side and the 200mm sides, and the sealing width is more than 10mm to make 5 bags. Inject 80mL of oil solution into each bag. The oil solution is an oil solution in which 1g of red soluble dye is dissolved in every 100nL of low-viscosity anti-rust lubricating oil [the kinematic viscosity at 37.8℃ is (20±2)mm2/s]. Squeeze out the residual air in the bag by hand and seal it. The bag is sandwiched between two pieces of white filter paper with a diameter greater than 150mm6
GB/T12339—2008
and placed in a metal plate or porcelain plate, covered with a glass plate, and a 1kg weight is pressed on the glass plate, and then placed in a drying oven at 70℃±2℃. After ?h, take out the bag and observe with the naked eye whether there is oil seepage on the white filter paper. 5.15 Water permeability at the sealing point
According to the provisions of Appendix B.
5.16 Adhesion resistance
Cut 20 pieces of the sample with a size of 100mm×100mm, overlap the oil-resistant surface of any two pieces and overlap the oil-resistant surface and the other side in five groups, and place them flat on the flat glass. Put a felt with a size of 50mm×50mm and a thickness of 5mm in the middle of each group, put a 5k weight on the felt, and then place it in the oven. The oven temperature for Class 1A materials is 70℃±1℃, and the oven temperature for Class 1C materials is 40℃±1℃. After 20h, remove the weight and felt, and place in a constant temperature and humidity chamber at a temperature of 23℃±1℃ and a relative humidity of 50%±2%. After cooling, separate the two pieces of each group and check whether the sample has visible peeling and cracking. GB/T12339—2008
Appendix A
(Normative Appendix)
Oil resistance test method
A.1 The oil resistance test method is used to check the oil resistance of various materials in Class 1. A.2 Take 100mL of turpentine, add 5g of anhydrous calcium chloride for drying and 1g of oil-soluble red pigment, cover the container stopper, shake well to mix, let it stand for 10 minutes, and filter it with white qualitative filter paper. Take 100g of the above filtrate, add 25g of lithium-based grease to materials of type 1A and BC, and add 200g of mineral oil with a viscosity of 75~205 to materials of type 1D, and shake thoroughly to mix until the grease or mineral oil is completely dissolved to serve as a reagent. A.3 Take material of type 1, cut into 10 pieces of 100mm×100mm test pieces, fold them diagonally with the oil-resistant surface as the inner side, and place them on a flat glass. Place a weight with a bottom diameter of 100mm and a mass of 2.5kg at the center of the fold. After 30s, remove the weight, open the sample, and fold it in another diagonal direction. Repeat the above operation and this sample is used as the test sample. A.4 Place the sample prepared in Chapter A.3 with the oil-resistant surface facing up on a round white qualitative filter paper with a diameter of more than 150mm. All corners of the sample are tightly fitted with the filter paper below. With the intersection of the fold as the center, place a metal ring with an outer diameter of 145mm ± 2mm, an inner diameter of 9cmrm ± 2tm, and a mass of 100g ~ 250g.
Put a bottomless cylinder with an inner diameter of 25mm and a height of 25mm on the intersection of the fold of the sample of Class 1 A, B or C materials. Load 5g of sand particles that pass the standard push sieve of 840μm and do not pass 590μm: Use a dropper to drop 1.5mL of the reagent in Chapter A.2 on the sand particles (no sand particles are added to Class 1 D, only the reagent in Chapter A.2 is filled to the intersection of the fold). After 24 hours, use the naked eye to observe whether there are oil stains on the round white qualitative filter paper under the sample: The above operations should be carried out in an environment of 23℃ ± 1℃ and relative humidity of 50% ± 2%. 8
B.1 Reagents
Appendix B
(Normative Appendix)
Test method for oil resistance at heat seal
GB/T123392008
Add 1g of dioctyl sodium sulfosuccinate and 1g of BC (for Class 1 A materials) or 1g of erythrosine B (for Class 1 C materials) to 98mL of distilled water, shake thoroughly to mix and dissolve. Dilute one portion of the mixture with 4 portions of distilled water as a reagent. B.2 Test specimen
Make 5 bags according to the method in 5.14.
B.3 Operation
Put thin flakes of white qualitative filter paper into the small bag in Chapter B.2 of this article, filling it up without being tight, and heat-seal the bag. Then, immerse the sealed bag in the reagent prepared in step B.1 at 23℃±1℃, with the bag 25mra away from the liquid surface: take it out after 24 hours, open the seal and check with the naked eye whether there is any stain on the white qualitative filter paper. GB/T12339-2008
National Standard of the People's Republic of China
Protective Inner Packaging Materials
GB/T 12339—2008
Published by China Standard Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal code: 100045
Website: spc.net.cn
Tel: 6852394668517548
Printed by Anhuangdao Printing Factory of China Standard Press Distributed by Xinhua Bookstores in various regions
Format: 880×12301/16 Printing sheet 1 Word count: 18,000 words First edition in August 2008 First printing in August 2008*
Book number: 155066·1-32384 Price: RMB 16.00 Any printing or binding errors
Replaced by our publishing center
Copyright reserved. Infringements must be investigated
Report telephone: (010) 6853353312 Low temperature flexibility
Cut 10 pieces of 100mm×300mm samples from the longitudinal and transverse directions of the sample, a total of 20 pieces. Place the first type A in a 30℃±5℃ environment, and the first type B in a -5℃±2℃ environment for temperature adjustment for 3h: Prepare a round steel bar with a diameter of 6mm fixed at both ends in advance, and cool it to the same temperature as the sample. Take out the temperature-adjusted sample and immediately fold it in half across the round steel bar in the length direction at room temperature, so that the oil-resistant surface of the sample is folded inward. Make the folded sample perpendicular to the axis of the steel bar and hold it on the round steel bar for 3 times. Open the sample and check with the naked eye for delamination. 5.13 Heat sealing strength
Perform according to the provisions of QB/T2358.
5.14 Oil resistance at the sealed part
Ten pieces of the sample with a size of 150mm×200mm are cut, and the oil-resistant surfaces of each two pieces are attached to each other. The 150mm side is heat-sealed and the 200mm sides are heat-sealed. The sealing width is more than 10mm, and 5 bags are made. 80mL of oil solution is injected into each bag. The oil solution is an oil solution in which 1g of red soluble dye is dissolved in every 100nL of low-viscosity anti-rust lubricating oil [the kinematic viscosity at 37.8℃ is (20±2)mm2/s]. The residual air in the bag is squeezed out by hand and the bag is sealed. The bag is sandwiched between two pieces of white paper with a diameter greater than 150mm 6
GB/T12339—2008
and placed in a metal plate or porcelain plate, covered with a glass plate, and a 1kg weight is pressed on the glass plate, and then placed in a drying oven at 70℃±2℃ for? After 24 hours, take out the bag and observe with naked eyes whether there is oil seepage on the white filter paper. 5.15 Water permeability at the seal
Perform according to the provisions of Appendix B.
5.16 Adhesion resistance
Cut 20 pieces of the sample with a size of 100mm×100mm, overlap the oil-resistant surface of any two pieces and overlap the oil-resistant surface and the other surface in five groups, and place them flat on the flat glass. In the middle of each group, a felt with a size of 50mm×50mm and a thickness of 5mm is placed, and a 5k weight is placed on the felt, and then placed in an oven. The oven temperature for Class 1A materials is 70℃±1℃, and the oven temperature for Class 1C materials is 40℃±1℃. After 20 hours, remove the weight and felt, and place them in a constant temperature and humidity chamber with a temperature of 23℃±1℃ and a relative humidity of 50%±2%. After cooling, separate the two pieces of each group and check whether the sample has visible peeling and cracking. GB/T12339—2008
Appendix A
(Normative Appendix)
Oil resistance test method
A.1 The oil resistance test method is used to check the oil resistance of various materials in Class 1. A.2 Take 100mL of turpentine, add 5g of anhydrous calcium chloride for drying and 1g of oil-soluble red pigment, cover the container stopper, shake it thoroughly to mix, let it stand for 10 minutes, and filter it with white qualitative filter paper. Take 100g of the above filtrate, add 25g of lithium-based grease to Class 1 A and BC materials, and add 200g of mineral oil with a viscosity of 75~205 to Class 1 D materials, shake it thoroughly to mix until the grease or mineral oil is completely dissolved as a reagent. A.3 Take Class 1 material, cut it into 10 pieces of 100mm×100mm test pieces, fold them diagonally with the oil-resistant surface as the inner side, and place them on a flat glass. With the midpoint of the fold as the center, place a weight with a bottom diameter of 100mm and a mass of 2.5kg. After 30s, remove the weight, open the sample, and fold it in the other diagonal direction. Repeat the above operation and this sample will be used as the test sample. A.4 Place the sample prepared in Chapter A.3 with the oil-resistant side facing up on a round white qualitative filter paper with a diameter of more than 150mm. All corners of the sample fit tightly with the filter paper below. With the intersection of the fold as the center, place a metal ring with an outer diameter of 145mm±2mm, an inner diameter of 9cmrm±2tm, and a mass of 100g~250g.
Put a bottomless cylinder with an inner diameter of 25mm and a height of 25mm on the intersection of the folds of the Class 1 A, B or C material sample. Load 5g of sand particles that pass the standard push sieve of 840μm and fail to pass 590μm: use a dropper to drop 1.5mL of the reagent in Chapter A.2 on the sand particles (Type 1D does not add sand particles, only fill the reagent in Chapter A.2 to the intersection of the folds). After leaving it for 24 hours, use the naked eye to observe whether there are oil stains on the round white qualitative filter paper under the sample: the above operations should be carried out in an environment of 23℃±1℃ and relative humidity of 50%±2%. 8
B.1 Reagents
Appendix B
(Normative Appendix)
Test method for oil resistance at heat seal
GB/T123392008
Add 1g of dioctyl sodium sulfosuccinate and 1g of BC (for Class 1 A materials) or 1g of erythrosine B (for Class 1 C materials) to 98mL of distilled water, shake thoroughly to mix and dissolve. Dilute one portion of the mixture with 4 portions of distilled water as a reagent. B.2 Test specimen
Make 5 bags according to the method in 5.14.
B.3 Operation
Put thin flakes of white qualitative filter paper into the small bag in Chapter B.2 of this article, filling it up without being tight, and heat-seal the bag. Then, immerse the sealed bag in the reagent prepared in step B.1 at 23℃±1℃, with the bag 25mra away from the liquid surface: take it out after 24 hours, open the seal and check with the naked eye whether there is any stain on the white qualitative filter paper. GB/T12339-2008
National Standard of the People's Republic of China
Protective Inner Packaging Materials
GB/T 12339—2008
Published by China Standard Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal code: 100045
Website: spc.net.cn
Tel: 6852394668517548
Printed by Anhuangdao Printing Factory of China Standard Press Distributed by Xinhua Bookstores in various regions
Format: 880×12301/16 Printing sheet 1 Word count: 18,000 words First edition in August 2008 First printing in August 2008*
Book number: 155066·1-32384 Price: RMB 16.00 Any printing or binding errors
Replaced by our publishing center
Copyright reserved. Infringements must be investigated
Report telephone: (010) 6853353312 Low temperature flexibility
Cut 10 pieces of 100mm×300mm samples from the longitudinal and transverse directions of the sample, a total of 20 pieces. Place the first type A in a 30℃±5℃ environment, and the first type B in a -5℃±2℃ environment for temperature adjustment for 3h: Prepare a round steel bar with a diameter of 6mm fixed at both ends in advance, and cool it to the same temperature as the sample. Take out the temperature-adjusted sample and immediately fold it in half across the round steel bar in the length direction at room temperature, so that the oil-resistant surface of the sample is folded inward. Make the folded sample perpendicular to the axis of the steel bar and hold it on the round steel bar for 3 times. Open the sample and check with the naked eye for delamination. 5.13 Heat sealing strength
Perform according to the provisions of QB/T2358.
5.14 Oil resistance at the sealed part
Ten pieces of the sample with a size of 150mm×200mm are cut, and the oil-resistant surfaces of each two pieces are attached to each other. The 150mm side is heat-sealed and the 200mm sides are heat-sealed. The sealing width is more than 10mm, and 5 bags are made. 80mL of oil solution is injected into each bag. The oil solution is an oil solution in which 1g of red soluble dye is dissolved in every 100nL of low-viscosity anti-rust lubricating oil [the kinematic viscosity at 37.8℃ is (20±2)mm2/s]. The residual air in the bag is squeezed out by hand and the bag is sealed. The bag is sandwiched between two pieces of white paper with a diameter greater than 150mm 6
GB/T12339—2008
and placed in a metal plate or porcelain plate, covered with a glass plate, and a 1kg weight is pressed on the glass plate, and then placed in a drying oven at 70℃±2℃ for? After 24 hours, take out the bag and observe with naked eyes whether there is oil seepage on the white filter paper. 5.15 Water permeability at the seal
Perform according to the provisions of Appendix B.
5.16 Adhesion resistance
Cut 20 pieces of the sample with a size of 100mm×100mm, overlap the oil-resistant surface of any two pieces and overlap the oil-resistant surface and the other surface in five groups, and place them flat on the flat glass. In the middle of each group, a felt with a size of 50mm×50mm and a thickness of 5mm is placed, and a 5k weight is placed on the felt, and then placed in an oven. The oven temperature for Class 1A materials is 70℃±1℃, and the oven temperature for Class 1C materials is 40℃±1℃. After 20 hours, remove the weight and felt, and place them in a constant temperature and humidity chamber with a temperature of 23℃±1℃ and a relative humidity of 50%±2%. After cooling, separate the two pieces of each group and check whether the sample has visible peeling and cracking. GB/T12339—2008
Appendix A
(Normative Appendix)
Oil resistance test method
A.1 The oil resistance test method is used to check the oil resistance of various materials in Class 1. A.2 Take 100mL of turpentine, add 5g of anhydrous calcium chloride for drying and 1g of oil-soluble red pigment, cover the container stopper, shake it thoroughly to mix, let it stand for 10 minutes, and filter it with white qualitative filter paper. Take 100g of the above filtrate, add 25g of lithium-based grease to Class 1 A and BC materials, and add 200g of mineral oil with a viscosity of 75~205 to Class 1 D materials, shake it thoroughly to mix until the grease or mineral oil is completely dissolved as a reagent. A.3 Take Class 1 material, cut it into 10 pieces of 100mm×100mm test pieces, fold them diagonally with the oil-resistant surface as the inner side, and place them on a flat glass. With the midpoint of the fold as the center, place a weight with a bottom diameter of 100mm and a mass of 2.5kg. After 30s, remove the weight, open the sample, and fold it in the other diagonal direction. Repeat the above operation and this sample will be used as the test sample. A.4 Place the sample prepared in Chapter A.3 with the oil-resistant side facing up on a round white qualitative filter paper with a diameter of more than 150mm. All corners of the sample fit tightly with the filter paper below. With the intersection of the fold as the center, place a metal ring with an outer diameter of 145mm±2mm, an inner diameter of 9cmrm±2tm, and a mass of 100g~250g.
Put a bottomless cylinder with an inner diameter of 25mm and a height of 25mm on the intersection of the folds of the Class 1 A, B or C material sample. Load 5g of sand particles that pass the standard push sieve of 840μm and fail to pass 590μm: use a dropper to drop 1.5mL of the reagent in Chapter A.2 on the sand particles (Type 1D does not add sand particles, only fill the reagent in Chapter A.2 to the intersection of the folds). After leaving it for 24 hours, use the naked eye to observe whether there are oil stains on the round white qualitative filter paper under the sample: the above operations should be carried out in an environment of 23℃±1℃ and relative humidity of 50%±2%. 8
B.1 Reagents
Appendix B
(Normative Appendix)
Test method for oil resistance at heat seal
GB/T123392008
Add 1g of dioctyl sodium sulfosuccinate and 1g of BC (for Class 1 A materials) or 1g of erythrosine B (for Class 1 C materials) to 98mL of distilled water, shake thoroughly to mix and dissolve. Dilute one portion of the mixture with 4 portions of distilled water as a reagent. B.2 Test specimen
Make 5 bags according to the method in 5.14.
B.3 Operation
Put thin flakes of white qualitative filter paper into the small bag in Chapter B.2 of this article, filling it up without being tight, and heat-seal the bag. Then, immerse the sealed bag in the reagent prepared in step B.1 at 23℃±1℃, with the bag 25mra away from the liquid surface: take it out after 24 hours, open the seal and check with the naked eye whether there is any stain on the white qualitative filter paper. GB/T12339-2008
National Standard of the People's Republic of China
Protective Inner Packaging Materials
GB/T 12339—2008
Published by China Standard Press
No. 16, Sanlihebei Street, Fuxingmenwai, Beijing
Postal code: 100045
Website: spc.net.cn
Tel: 6852394668517548
Printed by Anhuangdao Printing Factory of China Standard Press Distributed by Xinhua Bookstores in various regions
Format: 880×12301/16 Printing sheet 1 Word count: 18,000 words First edition in August 2008 First printing in August 2008*
Book number: 155066·1-32384 Price: RMB 16.00 Any printing or binding errors
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Report telephone: (010) 685335333 Take Class 1 material, cut into 10 pieces of 100mm×100mm test specimens, fold them diagonally with the oil-resistant surface as the inner side, and place them on a flat glass. Place a weight with a bottom diameter of 100mm and a mass of 2.5kg at the midpoint of the fold. Remove the weight after 30s, open the sample, and fold it again in another diagonal direction. Repeat the above operation and this sample will be used as the test specimen. A.4 Place the samp
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