Some standard content:
ICS55.040
Packaging Industry Standard of the People's Republic of China
BB/T00022008
Replaces BB/T0002—-1994
Biaxial orientation polypropylene pearl film
films1008-02-01issued
2008-07-01implemented
issued by the National Development and Reform Commission
Announcement of the National Development and Reform Commission of the People's Republic of China
No. 11 of 2008wwW.bzxz.Net
The National Development and Reform Commission approved 351 industry standards including "Automobile Fuel Consumption Label" (see the attachment for the standard number, name and starting implementation date), including 4 automobile industry standards, 253 machinery industry standards, 32 light industry standards, 14 building materials industry standards, 10 textile industry standards, 18 chemical industry standards, 4 ferrous gold industry standards, 3 packaging industry standards, 1 logistics industry standard, 1 pharmaceutical equipment industry standard and 11 rare earth industry standards, which are now announced.
The above machinery industry standards are published by Machinery Industry Press, light industry standards are published by China Light Industry Press, building materials industry standards are published by Building Materials Industry Press, textile logistics and rare earth industry standards are published by China Standards Press, ferrous metallurgy industry standards are published by Metallurgical Industry Press, automotive packaging, pharmaceutical equipment and chemical engineering construction industry standards are published by China Planning Press, and chemical products industry standards are published by Chemical Industry Press. Appendix: Numbers, names and starting dates of implementation of three packaging industry standards National Development and Reform Commission of the People's Republic of China February 1, 2008
Appendix:
Member Zero Reform Station
Numbers, names and starting dates of implementation of three packaging industry standards Serial number
Standard number
BB/T0049-2008
BB/T0012-2008
BB/T0002-2008
Standard name
Mineral desiccant for packaging
Polyvinylidene chloride (PVDC) coated film Biaxially oriented polypropylene pearlescent film
Replaced standard number
BB/T0012—1997
BBET0002
Starting date of implementation
2008-07-01
2008-07-01
2008-07-01
Two-way Shenxin Baking Skin Light
Scope·
Normative references
Classification and specifications
Requirements·
Test methods
Inspection rules
Marking, packaging, transportation and storage
BB/T0002-2008
BB/T00022008
Compared with BB/T0002-1994 "Biaxially oriented polypropylene pearlescent film", the main changes of this standard are as follows: The "light transmittance" item is added to the physical and mechanical properties. The "haze" item is deleted from the physical and mechanical properties. The thickness tolerance and density indicators have been modified, and the "first-class product" grade in the original standard has been cancelled. This standard is proposed by the China Packaging Federation. This standard is under the jurisdiction of the National Packaging Standardization Technical Committee. The main drafting unit of this standard is: National Packaging Product Quality Supervision and Inspection Center (Jinan) of Jiangsu Zhongda Group Co., Ltd. The participating drafting units of this standard are: Foshan Plastics Group Co., Ltd., Guangdong Deguan Packaging Materials Co., Ltd., and Guangdong Huaye Packaging Materials Co., Ltd.
The main drafters of this standard are: Zhang Buyun Conglin, Zhong Junjie, Zheng Zhenjiu, Hong Xing, 1 Scope
Biaxially oriented polypropylene pearlescent film
BB/T00022008
This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation of biaxially oriented polypropylene pearlescent film (hereinafter referred to as pearlescent film) transportation and storage.
This standard applies to polypropylene pearlescent film made of polypropylene resin as the main raw material, with a certain amount of special pearlescent masterbatch added, and biaxially stretched by the flat film method.
2 Normative referenced documents
The clauses in the following documents become clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding dated content) or revisions are not applicable to this standard. However, the parties who 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, its latest version applies to this standard. GB/T1037 Test method for water vapor permeability of plastic film and sheet - Cup method GB/T1040.3 Determination of tensile properties of plastics - Part 3: Test conditions for film and sheet (cqVIS0527-3: 1995)
Test method for light transmittance and haze of transparent plastics (eqVASTM D1003:1977) GB/T 2410
GB/T 2828.1 Sampling inspection procedure by attributes Part 1: Sampling plan for batch inspection based on acceptance quality limit (AQL) (eqyS02859-1:1999)
GB/T 5009.60
GB/T 6343
CB/T 6672
CB/T 6673
GB/T 8807
GB 9688
Test method for hygienic standard of polyolefin, polystyrene and polyolefin moldings for food packaging, determination of apparent (bulk) density of foamed plastics and rubber Determination of thickness of plastic film and sheet by mechanical measurement method (idISO 4593:1993) Determination of length and width of plastic film and sheet (idIS04592:1992) Test method for mirror gloss of plastics
Hygienic standard for polypropylene molded products for food packaging CB/T10006
GB/T14216
QB/T2358
3 Classification and specification
3.1 Classification
Determination method for coefficient of friction of plastic film and sheet (idlLS08295:1986) Test method for wetting tension of plastic film and sheet (eq1S08296:1987) Test method for heat sealing strength of plastic film packaging bags Products are divided into heat-sealing pearlescent film (PLa type) and non-heat-sealing pearlescent film (PLb type) according to their performance. Heat-sealing pearlescent film can be divided into single-sided heat-sealing film (PLal) and double-sided heat-sealing film (PLa2). 3.2 Specifications
Width: 200mm~2000mm:
BB/T0002-2008
Thickness: 20μm~50m
Special specifications shall be agreed upon by both parties.
4 Requirements
4.1 Dimensional deviation
4.1.1 Film width deviation shall comply with the requirements of Table 1. Table 1 Width deviation
Width, mm
Superior products
200-2000
Thickness limit deviation, average thickness deviation should meet the requirements of Table 2 Deviation, mm
Table 2 Thickness limit deviation
Nominal thickness.am
Superior products
Limit shrinkage, %
Qualified products
Qualified products
Average thickness deviation, %
Superior products
Qualified products
Joints should be firmly connected and have obvious markings. The number of joints allowed for each roll of film and the length of each section should meet the requirements of Table 3, Table 3 Number of joints and length of each section
Allowable number of joints
Superior products
4.2 Appearance
The appearance should meet the requirements of Table 4.
Qualified products
Table 4 Appearance requirements
Superior products
End surface winding unevenness
Scratches, impurities
Wrinkles, ribs
Film roll paper core
≤2.0mm, no burrs
Not allowed
Not obvious
Dents or notches are not allowed
Not allowed
None Bright spots, bubbles, black spots, oil stains, etc. are clearly visible. Each section length, m
Superior products, qualified products
≥500
Qualified products
≤3.0mm, no burrs
Slight, but does not affect the use
Slight, but does not affect the use
No obvious dents or gaps
Slight, but does not affect the use
4.3 Physical and mechanical properties
The physical and mechanical properties shall meet the requirements of Table 5
Tensile strength, MPa
Elongation at break, %
Heat shrinkage, %
Average density difference, %
Hygiene properties
Physical and mechanical properties
Friction coefficient (static, dynamic)
Heat sealing strength, N/15mml
Surface wetting tension.mN/m
Light transmittance, %
Glossiness, %
Density./cm
Nominal density 0.70~ 0.85
Nominal density is less than 0.70
Moisture permeability,/(m2-24h)
Pearlescent film for food packaging Hygienic performance Application Comply with the provisions of GB9688 5
Test method
5.1 Sampling method
Heat seal type
BB/T0002-2008
Non-heat seal type
≥110
≤160
Remove the three layers on the surface of the sample film roll, cut along the transverse direction of the film roll to take a sufficient number of samples for appearance, specification size and physical performance tests.
5.2 Standard environment for sample state adjustment and test The sample state is adjusted in a standard environment with a temperature of 23℃±2℃ and a relative humidity of 50%±10% for not less than 4h, and the test is carried out under this condition.
5.3 Determination of specification dimensions and deviations
5.3.1 Width measurement shall be carried out in accordance with GB/T6673. 5.3.2 Thickness measurement shall be carried out in accordance with GB/T6672. Single-layer measurement shall be carried out using a flat measuring head, and the resolution value of the measuring instrument shall be less than or equal to 0.2μm. The maximum deviation value shall be taken as the thickness limit deviation. 3
BB/T0002-2008
5.3.3 The average thickness is the arithmetic mean of the thickness of each measured point. The average thickness deviation is the percentage of the difference between the average thickness and the nominal thickness to the nominal thickness.
5.4 Appearance inspection
Visual inspection under natural light or fluorescent light, the unevenness of the winding of the end surface of the film roll is measured with a measuring tool with an accuracy of 0.5mm. The outlier detection is carried out by placing a single sheet of film flat on the table and observing with the naked eye.
5.5 The determination of tensile strength and elongation at break shall be carried out in accordance with the provisions of GB/T1040.3. The specimen is a strip with a length of 150mm and a width of 15mm±0.1mm. The distance between the clamps is 100mm and the tensile speed is 250mm/min±10mm/min. 5.6 Determination of thermal shrinkage
5.6.1 Test instrument:
Blast-type constant temperature box:
b) Vernier caliper with a minimum scale value of 0.02mm: C stainless steel plate;
d stopwatch.
5.6.2 Specimens: 5 pieces of 120mm×120mm specimens are uniformly cut in the width direction of the film roll. Mark the specimen 10mm away from the edge in the middle of the longitudinal and transverse directions, and accurately measure the length between the marks. 5.6.3 Place the specimen flat on a stainless steel plate in a blast-type constant temperature supply box at 120℃±2C. The stainless steel plate is located in the middle of the constant temperature box. No air is blown during the test. After heating for 2 minutes, take it out and cool it to ambient temperature. Measure the longitudinal and transverse marking lengths. Calculate the longitudinal and transverse heat shrinkage rates according to formula (1) and take the arithmetic mean of 5 samples. LL
THeat shrinkage rate, %:
L—length before heating, mm;
L—length after heating, mm
5.7 Determination of friction coefficient
According to the provisions of GB/T10006
5.8 Determination of heat sealing strength
According to the provisions of 0B/T2358. The heat sealing conditions are 130G~140℃, the time is 1s, the pressure is 0.18MPa, and the speed is 100mm/min±20mm/ming
5.9 Determination of wetting tension
According to the provisions of GB/T14216.
5.10 Determination of light transmittance
Perform according to the provisions of GB/T2410.
5.11 Determination of gloss
Perform according to the provisions of GB/T8807, with an incident angle of 45°5.12 Determination of density and calculation of average density deviation4
BB/T00022008
Perform according to the provisions of GB/T6343. Take no less than 3 groups of samples, each with 5 layers and a size of 300mm×300mm, measure the density, and calculate the average density. The average density deviation is the percentage of the difference between the average density and the nominal density to the nominal density. 5.13 Determination of moisture permeability
Perform according to the provisions of GB/T1037. Temperature 38℃±0.6℃, relative humidity 90%±2%. 5.14 Determination of hygienic properties
Perform according to the provisions of GB/T5009.60
Inspection rules
6.1 Batch
Products of the same thickness produced with the same raw materials and the same process conditions are considered as a batch, and each batch shall not exceed 3006.2 Sampling
Appearance and dimensional deviation inspections shall be carried out using the normal inspection secondary sampling plan in GB/T2828.1, using the general inspection level II, the acceptance quality limit AOL is 6.5, and sampling inspections shall be carried out according to the requirements of Table 6. Physical and mechanical properties and hygienic properties inspections Cut a sufficient number of films from any sample drawn. Table 6 Sampling and judgment plan for appearance inspection
91-150
151-280
281-500
501-1200
12013200
320110000
Sample size
Cumulative sample
Number of qualified judgments
Number of unqualified judgments
BB/T00022008
6.3 Factory inspection
Factory inspection is 4.14.2 and items 1-10 in Table 5. 6.4 Type inspection
Type inspection items are all the requirements of Chapter 4. Type inspection shall be carried out in any of the following cases: Pre-production and identification of new products or old products transferred to other factories: by
After formal production, if there are major changes in structure, materials and processes, which may affect product performance: During normal production, inspection shall be carried out once a year: d
When the product is stopped for a long time and production is resumed: When the factory inspection results are significantly different from the last type inspection: e
When the national quality supervision agency proposes to conduct further inspections; 6.5 Judgment rules
6.5.1 If any one of the product's appearance dimension deviations is unqualified, the roll is unqualified: The unqualified judgment shall be carried out according to the provisions of Table 6.6.5.2 If there are unqualified items in the physical and mechanical properties test results, the original batch shall be doubled and the unqualified items shall be re-tested. If all the re-test results are qualified, the physical and mechanical properties are qualified: If the re-test results are still unqualified, the physical and mechanical properties are unqualified. 6.5.3 If one of the hygienic properties is unqualified, the batch of products shall be judged to be unqualified. 7 Marking, packaging, transportation and storage
7.1 Marking
Should comply with the provisions of GB/T191. There should be a certificate of conformity and the name and address of the manufacturer, the implementation standard number and trademark, indicating the product name, specification, length, quality, treatment surface, heat sealing surface, batch number, production date, grade, etc. 7.2 Packaging
Each roll of film is protected by pads at both ends, wrapped with a film, and tied tightly. Special packaging shall be agreed upon by both the supplier and the buyer. 7.3 Transportation
Handle with care during transportation. Prevent mechanical collision and exposure to sunlight and rain. 7.4 Storage
7.4.1 The film should be stored in a clean, dry and ventilated warehouse, properly stacked, away from toxic and harmful pollution sources, more than 2m away from heat sources, and not exposed to direct sunlight.
7.4.2 The product shall be stored for no more than half a year from the date of production under the prescribed packaging, storage and transportation conditions. Products that exceed the storage period may still be used after passing the inspection.2 Standard environment for sample state adjustment and testing The sample state is adjusted in a standard environment with a temperature of 23℃±2℃ and a relative humidity of 50%±10% for a period of not less than 4h, and the test is carried out under this condition.
5.3 Determination of specifications, dimensions and deviations
5.3.1 The width shall be measured in accordance with the provisions of GB/T6673. 5.3.2 The thickness shall be measured in accordance with the provisions of GB/T6672. A single-layer measurement with a flat measuring head is used, and the resolution value of the measuring instrument is less than or equal to 0.2μm. The maximum deviation value is taken as the thickness limit deviation. 3
BB/T0002-2008
5.3.3 The average thickness is the arithmetic mean of the thickness of each measured point. The average thickness deviation is the percentage of the difference between the average thickness and the nominal thickness to the nominal thickness.
5.4 Appearance inspection
Visual inspection under natural light or fluorescent light, the unevenness of the film roll end winding is measured with a measuring tool with an accuracy of 0.5mm. The outlier detection is to place a single film flat on the table and observe it with the naked eye.
5.5 The determination of tensile strength and elongation at break shall be carried out in accordance with the provisions of GB/T1040.3. The specimen is a strip with a length of 150mm and a width of 15mm±0.1mm. The distance between the clamps is 100mm, and the stretching speed is 250mm/min±10mm/min. 5.6 Determination of thermal shrinkage
5.6.1 Test instrument:
Blast thermostatic box:
b) Vernier caliper with a minimum scale value of 0.02mm: C stainless steel plate;
d stopwatch.
5.6.2 Samples: Cut 5 120mm×120mm samples uniformly in the width direction of the film roll. Mark the sample 10mm from the edge in the middle of the longitudinal and transverse directions, and accurately measure the length between the marks. 5.6.3 Place the sample flat on a stainless steel plate in a blast constant temperature supply box at 120℃±2C. The stainless steel plate is located in the middle of the constant temperature box. No blast is performed during the test. After heating for 2 minutes, take it out and cool it to ambient temperature. Measure the longitudinal and transverse mark lengths, calculate the longitudinal and transverse heat shrinkage rates respectively according to formula (1), and take the arithmetic average of the 5 samples. LL
THeat shrinkage, %:
L—length before heating, mm;
L—length after heating, mm
5.7 Determination of friction coefficient
According to the provisions of GB/T10006
5.8 Determination of heat sealing strength
According to the provisions of 0B/T2358. Heat sealing conditions are 130G~140℃, time is 1s, pressure is 0.18MPa, speed is 100mm/min±20mm/ming
5.9 Determination of wetting tension
According to the provisions of GB/T14216.
5.10 Determination of light transmittance
According to the provisions of GB/T2410.
5.11 Determination of gloss
Perform according to the provisions of GB/T8807, with an incident angle of 45°5.12 Determination of density and calculation of average density deviation4
BB/T00022008
Perform according to the provisions of GB/T6343. Take no less than 3 groups of samples, each with 5 layers and a size of 300mm×300mm, measure the density, and calculate the average density. The average density deviation is the percentage of the difference between the average density and the nominal density to the nominal density. 5.13 Determination of moisture permeability
Perform according to the provisions of GB/T1037. Temperature 38℃±0.6℃, relative humidity 90%±2%. 5.14 Determination of hygienic properties
Perform according to the provisions of GB/T5009.60
Inspection rules
6.1 Batch
Products of the same thickness produced with the same raw materials and the same process conditions are considered as a batch, and each batch shall not exceed 3006.2 Sampling
Appearance and dimensional deviation inspections shall be carried out using the normal inspection secondary sampling plan in GB/T2828.1, using the general inspection level II, the acceptance quality limit AOL is 6.5, and sampling inspections shall be carried out according to the requirements of Table 6. Physical and mechanical properties and hygienic properties inspections Cut a sufficient number of films from any sample drawn. Table 6 Sampling and judgment plan for appearance inspection
91-150
151-280
281-500
501-1200
12013200
320110000
Sample size
Cumulative sample
Number of qualified judgments
Number of unqualified judgments
BB/T00022008
6.3 Factory inspection
Factory inspection is 4.14.2 and items 1-10 in Table 5. 6.4 Type inspection
Type inspection items are all the requirements of Chapter 4. Type inspection shall be carried out in any of the following cases: Pre-production and identification of new products or old products transferred to other factories: by
After formal production, if there are major changes in structure, materials and processes, which may affect product performance: During normal production, inspection shall be carried out once a year: d
When the product is stopped for a long time and production is resumed: When the factory inspection results are significantly different from the last type inspection: e
When the national quality supervision agency proposes to conduct further inspections; 6.5 Judgment rules
6.5.1 If any one of the product's appearance dimension deviations is unqualified, the roll is unqualified: The unqualified judgment shall be carried out according to the provisions of Table 6.6.5.2 If there are unqualified items in the physical and mechanical properties test results, the original batch shall be doubled and the unqualified items shall be re-tested. If all the re-test results are qualified, the physical and mechanical properties are qualified: If the re-test results are still unqualified, the physical and mechanical properties are unqualified. 6.5.3 If one of the hygienic properties is unqualified, the batch of products shall be judged to be unqualified. 7 Marking, packaging, transportation and storage
7.1 Marking
Should comply with the provisions of GB/T191. There should be a certificate of conformity and the name and address of the manufacturer, the implementation standard number and trademark, indicating the product name, specification, length, quality, treatment surface, heat sealing surface, batch number, production date, grade, etc. 7.2 Packaging
Each roll of film is protected by pads at both ends, wrapped with a film, and tied tightly. Special packaging shall be agreed upon by both the supplier and the buyer. 7.3 Transportation
Handle with care during transportation. Prevent mechanical collision and exposure to sunlight and rain. 7.4 Storage
7.4.1 The film should be stored in a clean, dry and ventilated warehouse, properly stacked, away from toxic and harmful pollution sources, more than 2m away from heat sources, and not exposed to direct sunlight.
7.4.2 The product shall be stored for no more than half a year from the date of production under the prescribed packaging, storage and transportation conditions. Products that exceed the storage period may still be used after passing the inspection.2 Standard environment for sample state adjustment and testing The sample state is adjusted in a standard environment with a temperature of 23℃±2℃ and a relative humidity of 50%±10% for a period of not less than 4h, and the test is carried out under this condition.
5.3 Determination of specifications, dimensions and deviations
5.3.1 The width shall be measured in accordance with the provisions of GB/T6673. 5.3.2 The thickness shall be measured in accordance with the provisions of GB/T6672. A single-layer measurement with a flat measuring head is used, and the resolution value of the measuring instrument is less than or equal to 0.2μm. The maximum deviation value is taken as the thickness limit deviation. 3
BB/T0002-2008
5.3.3 The average thickness is the arithmetic mean of the thickness of each measured point. The average thickness deviation is the percentage of the difference between the average thickness and the nominal thickness to the nominal thickness.
5.4 Appearance inspection
Visual inspection under natural light or fluorescent light, the unevenness of the film roll end winding is measured with a measuring tool with an accuracy of 0.5mm. The outlier detection is to place a single film flat on the table and observe it with the naked eye.
5.5 The determination of tensile strength and elongation at break shall be carried out in accordance with the provisions of GB/T1040.3. The specimen is a strip with a length of 150mm and a width of 15mm±0.1mm. The distance between the clamps is 100mm, and the stretching speed is 250mm/min±10mm/min. 5.6 Determination of thermal shrinkage
5.6.1 Test instrument:
Blast thermostatic box:
b) Vernier caliper with a minimum scale value of 0.02mm: C stainless steel plate;
d stopwatch.
5.6.2 Samples: Cut 5 120mm×120mm samples uniformly in the width direction of the film roll. Mark the sample 10mm from the edge in the middle of the longitudinal and transverse directions, and accurately measure the length between the marks. 5.6.3 Place the sample flat on a stainless steel plate in a blast constant temperature supply box at 120℃±2C. The stainless steel plate is located in the middle of the constant temperature box. No blast is performed during the test. After heating for 2 minutes, take it out and cool it to ambient temperature. Measure the longitudinal and transverse mark lengths, calculate the longitudinal and transverse heat shrinkage rates respectively according to formula (1), and take the arithmetic average of the 5 samples. LL
THeat shrinkage, %:
L—length before heating, mm;
L—length after heating, mm
5.7 Determination of friction coefficient
According to the provisions of GB/T10006
5.8 Determination of heat sealing strength
According to the provisions of 0B/T2358. Heat sealing conditions are 130G~140℃, time is 1s, pressure is 0.18MPa, speed is 100mm/min±20mm/ming
5.9 Determination of wetting tension
According to the provisions of GB/T14216.
5.10 Determination of light transmittance
According to the provisions of GB/T2410.
5.11 Determination of gloss
Perform according to the provisions of GB/T8807, with an incident angle of 45°5.12 Determination of density and calculation of average density deviation4
BB/T00022008
Perform according to the provisions of GB/T6343. Take no less than 3 groups of samples, each with 5 layers and a size of 300mm×300mm, measure the density, and calculate the average density. The average density deviation is the percentage of the difference between the average density and the nominal density to the nominal density. 5.13 Determination of moisture permeability
Perform according to the provisions of GB/T1037. Temperature 38℃±0.6℃, relative humidity 90%±2%. 5.14 Determination of hygienic properties
Perform according to the provisions of GB/T5009.60
Inspection rules
6.1 Batch
Products of the same thickness produced with the same raw materials and the same process conditions are considered as a batch, and each batch shall not exceed 3006.2 Sampling
Appearance and dimensional deviation inspections shall be carried out using the normal inspection secondary sampling plan in GB/T2828.1, using the general inspection level II, the acceptance quality limit AOL is 6.5, and sampling inspections shall be carried out according to the requirements of Table 6. Physical and mechanical properties and hygienic properties inspections Cut a sufficient number of films from any sample drawn. Table 6 Sampling and judgment plan for appearance inspection
91-150
151-280
281-500
501-1200
12013200
320110000
Sample size
Cumulative sample
Number of qualified judgments
Number of unqualified judgments
BB/T00022008
6.3 Factory inspection
Factory inspection is 4.14.2 and items 1-10 in Table 5. 6.4 Type inspection
Type inspection items are all the requirements of Chapter 4. Type inspection shall be carried out in any of the following cases: Pre-production and identification of new products or old products transferred to other factories: by
After formal production, if there are major changes in structure, materials and processes, which may affect product performance: During normal production, inspection shall be carried out once a year: d
When the product is stopped for a long time and production is resumed: When the factory inspection results are significantly different from the last type inspection: e
When the national quality supervision agency proposes to conduct further inspections; 6.5 Judgment rules
6.5.1 If any one of the product's appearance dimension deviations is unqualified, the roll is unqualified: The unqualified judgment shall be carried out according to the provisions of Table 6.6.5.2 If there are unqualified items in the physical and mechanical properties test results, the original batch shall be doubled and the unqualified items shall be re-tested. If all the re-test results are qualified, the physical and mechanical properties are qualified: If the re-test results are still unqualified, the physical and mechanical properties are unqualified. 6.5.3 If one of the hygienic properties is unqualified, the batch of products shall be judged to be unqualified. 7 Marking, packaging, transportation and storage
7.1 Marking
Should comply with the provisions of GB/T191. There should be a certificate of conformity and the name and address of the manufacturer, the implementation standard number and trademark, indicating the product name, specification, length, quality, treatment surface, heat sealing surface, batch number, production date, grade, etc. 7.2 Packaging
Each roll of film is protected by pads at both ends, wrapped with a film, and tied tightly. Special packaging shall be agreed upon by both the supplier and the buyer. 7.3 Transportation
Handle with care during transportation. Prevent mechanical collision and exposure to sunlight and rain. 7.4 Storage
7.4.1 The film should be stored in a clean, dry and ventilated warehouse, properly stacked, away from toxic and harmful pollution sources, more than 2m away from heat sources, and not exposed to direct sunlight.
7.4.2 The product shall be stored for no more than half a year from the date of production under the prescribed packaging, storage and transportation conditions. Products that exceed the storage period may still be used after passing the inspection.7 Determination of friction coefficient
Perform according to GB/T10006
5.8 Determination of heat seal strength
Perform according to 0B/T2358. Heat seal conditions are 130G~140℃, time is 1s, pressure is 0.18MPa, speed is 100mm/min±20mm/ming
5.9 Determination of wetting tension
Perform according to GB/T14216.
5.10 Determination of light transmittance
Perform according to GB/T2410.
5.11 Determination of gloss
Perform according to the provisions of GB/T8807, with an incident angle of 45°5.12 Determination of density and calculation of average density deviation4
BB/T00022008
Perform according to the provisions of GB/T6343. Take no less than 3 groups of samples, each with 5 layers and a size of 300mm×300mm, measure the density, and calculate the average density. The average density deviation is the percentage of the difference between the average density and the nominal density to the nominal density. 5.13 Determination of moisture permeability
Perform according to the provisions of GB/T1037. Temperature 38℃±0.6℃, relative humidity 90%±2%. 5.14 Determination of hygienic properties
Perform according to the provisions of GB/T5009.60
Inspection rules
6.1 Batch
Products of the same thickness produced with the same raw materials and the same process conditions are considered as a batch, and each batch shall not exceed 3006.2 Sampling
Appearance and dimensional deviation inspections shall be carried out using the normal inspection secondary sampling plan in GB/T2828.1, using the general inspection level II, the acceptance quality limit AOL is 6.5, and sampling inspections shall be carried out according to the requirements of Table 6. Physical and mechanical properties and hygienic properties inspections Cut a sufficient number of films from any sample drawn. Table 6 Sampling and judgment plan for appearance inspection
91-150
151-280
281-500
501-1200
12013200
320110000
Sample size
Cumulative sample
Number of qualified judgments
Number of unqualified judgments
BB/T00022008
6.3 Factory inspection
Factory inspection is 4.14.2 and items 1-10 in Table 5. 6.4 Type inspection
Type inspection items are all the requirements of Chapter 4. Type inspection shall be carried out in any of the following cases: Pre-production and identification of new products or old products transferred to other factories: by
After formal production, if there are major changes in structure, materials and processes, which may affect product performance: During normal production, inspection shall be carried out once a year: d
When the product is stopped for a long time and production is resumed: When the factory inspection results are significantly different from the last type inspection: e
When the national quality supervision agency proposes to conduct further inspections; 6.5 Judgment rules
6.5.1 If any one of the product's appearance dimension deviations is unqualified, the roll is unqualified: The unqualified judgment shall be carried out according to the provisions of Table 6.6.5.2 If there are unqualified items in the physical and mechanical properties test results, the original batch shall be doubled and the unqualified items shall be re-tested. If all the re-test results are qualified, the physical and mechanical properties are qualified: If the re-test results are still unqualified, the physical and mechanical properties are unqualified. 6.5.3 If one of the hygienic properties is unqualified, the batch of products shall be judged to be unqualified. 7 Marking, packaging, transportation and storage
7.1 Marking
Should comply with the provisions of GB/T191. There should be a certificate of conformity and the name and address of the manufacturer, the implementation standard number and trademark, indicating the product name, specification, length, quality, treatment surface, heat sealing surface, batch number, production date, grade, etc. 7.2 Packaging
Each roll of film is protected by pads at both ends, wrapped with a film, and tied tightly. Special packaging shall be agreed upon by both the supplier and the buyer. 7.3 Transportation
Handle with care during transportation. Prevent mechanical collision and exposure to sunlight and rain. 7.4 Storage
7.4.1 The film should be stored in a clean, dry and ventilated warehouse, properly stacked, away from toxic and harmful pollution sources, more than 2m away from heat sources, and not exposed to direct sunlight.
7.4.2 The product shall be stored for no more than half a year from the date of production under the prescribed packaging, storage and transportation conditions. Products that exceed the storage period may still be used after passing the inspection.7 Determination of friction coefficient
Perform according to GB/T10006
5.8 Determination of heat seal strength
Perform according to 0B/T2358. Heat seal conditions are 130G~140℃, time is 1s, pressure is 0.18MPa, speed is 100mm/min±20mm/ming
5.9 Determination of wetting tension
Perform according to GB/T14216.
5.10 Determination of light transmittance
Perform according to GB/T2410.
5.11 Determination of gloss
Perform according to the provisions of GB/T8807, with an incident angle of 45°5.12 Determination of density and calculation of average density deviation4
BB/T00022008
Perform according to the provisions of GB/T6343. Take no less than 3 groups of samples, each with 5 layers and a size of 300mm×300mm, measure the density, and calculate the average density. The average density deviation is the percentage of the difference between the average density and the nominal density to the nominal density. 5.13 Determination of moisture permeability
Perform according to the provisions of GB/T1037. Temperature 38℃±0.6℃, relative humidity 90%±2%. 5.14 Determination of hygienic properties
Perform according to the provisions of GB/T5009.60
Inspection rules
6.1 Batch
Products of the same thickness produced with the same raw materials and the same process conditions are considered as a batch, and each batch shall not exceed 3006.2 Sampling
Appearance and dimensional deviation inspections shall be carried out using the normal inspection secondary sampling plan in GB/T2828.1, using the general inspection level II, the acceptance quality limit AOL is 6.5, and sampling inspections shall be carried out according to the requirements of Table 6. Physical and mechanical properties and hygienic properties inspections Cut a sufficient number of films from any sample drawn. Table 6 Sampling and judgment plan for appearance inspection
91-150
151-280
281-500
501-1200
12013200
320110000
Sample size
Cumulative sample
Number of qualified judgments
Number of unqualified judgments
BB/T00022008
6.3 Factory inspection
Factory inspection is 4.14.2 and items 1-10 in Table 5. 6.4 Type inspection
Type inspection items are all the requirements of Chapter 4. Type inspection shall be carried out in any of the following cases: Pre-production and identification of new products or old products transferred to other factories: by
After formal production, if there are major changes in structure, materials and processes, which may affect product performance: During normal production, inspection shall be carried out once a year: d
When the product is stopped for a long time and production is resumed: When the factory inspection results are significantly different from the last type inspection: e
When the national quality supervision agency proposes to conduct further inspections; 6.5 Judgment rules
6.5.1 If any one of the product's appearance dimension deviations is unqualified, the roll is unqualified: The unqualified judgment shall be carried out according to the provisions of Table 6.6.5.2 If there are unqualified items in the physical and mechanical properties test results, the original batch shall be doubled and the unqualified items shall be re-tested. If all the re-test results are qualified, the physical and mechanical properties are qualified: If the re-test results are still unqualified, the physical and mechanical properties are unqualified. 6.5.3 If one of the hygienic properties is unqualified, the batch of products shall be judged to be unqualified. 7 Marking, packaging, transportation and storage
7.1 Marking
Should comply with the provisions of GB/T191. There should be a certificate of conformity and the name and address of the manufacturer, the implementation standard number and trademark, indicating the product name, specification, length, quality, treatment surface, heat sealing surface, batch number, production date, grade, etc. 7.2 Packaging
Each roll of film is protected by pads at both ends, wrapped with a film, and tied tightly. Special packaging shall be agreed upon by both the supplier and the buyer. 7.3 Transportation
Handle with care during transportation. Prevent mechanical collision and exposure to sunlight and rain. 7.4 Storage
7.4.1 The film should be stored in a clean, dry and ventilated warehouse, properly stacked, away from toxic and harmful pollution sources, more than 2m away from heat sources, and not exposed to direct sunlight.
7.4.2 The product shall be stored for no more than half a year from the date of production under the prescribed packaging, storage and transportation conditions. Products that exceed the storage period may still be used after passing the inspection.
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