Some standard content:
ICS 55.040
Packaging Industry Standard of the People's Republic of China
BB/T 0049—2008
Mineral desiccantfor packaging
packaging2008-02-18 issued
2008-07-01 implemented
National Development and Reform Commission issued
National Development and Reform Commission of the People's Republic of China Public Notice No. 11 of 2008
National Development and Reform Commission approved 351 industry standards including "Automobile Fuel Consumption Label" (see the attachment for 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, [logistics industry standards, 1 pharmaceutical equipment industry standard, 11 rare earth industry standards, and now publish them.
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, automobile, 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 3 Numbers, names and starting dates of implementation of packaging industry standards National Development and Reform Commission of the People's Republic of China February 1, 2008
Appendix:
Numbers, names and starting dates of implementation of 3 packaging industry standards Standard number
BB/T 00492008
BR/T 0012-
—2008
BB/T 0002-
Standard name
Mineral desiccant for packaging
Vinylidene chloride (PVDC) coated film
Biaxially oriented polypropylene pearlescent film
Replaced standard number
BB/T0012—1997
BB/T 0002—1994
Start date of implementation
2008-07-01
2008-07-01
2008-07-01
Foreword·
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements
6 Test methods:
7 Marking, packaging, storage and transportation
References
BB/T 0049-2008
BB/T 0049--2008
This standard is proposed and managed by the China Packaging Federation. The drafting units of this standard are: the Logistics Science Research Institute of the General Logistics Department of the Chinese People's Liberation Army, the Xinyang Nuclear Industry Hengda Industrial Company Desiccant Factory, and the Beijing Entry-Exit Inspection and Quarantine Association. The main drafters of this standard are: Guo Baohua, Wang Chunhui, Yao Rui, Zhang Zhigang, Xu Siqiao, Wang Zhili, and Liu Zhenhua. This standard is published for the first time.
1 Scope
Mineral desiccant for packaging
BB/T 0049--2008
This standard specifies the requirements, test methods and marking, packaging, transportation and storage of mineral desiccants for packaging (hereinafter referred to as "desiccants").
This standard is applicable to the production and inspection of desiccants using silicate minerals as raw materials. 2 Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. For dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest versions are applicable to this standard. GB/T191 Pictorial markings for packaging, storage and transportation
GB/T4122 Packaging terms
GB/T6388 Transport packaging delivery and receipt marks
3 Terms and definitions
The following terms and definitions established in CB/T4122 apply to this standard. 3.1
Unit
The smallest packaging unit that can be used independently and determined based on the adsorption capacity of the desiccant. 3.2
Unit quality
The mass of a unit of desiccant. The unit mass should not exceed 50.00g3.3
Unit adsorption capacityabilityofunitadsorptianThe actual mass of water vapor adsorbed by a unit mass of desiccant under an air temperature of 25%±2°C. 4 Classification
Desiccant is divided into two types according to the dust content: I Type—trace dust;
Business type-
5 Requirements
—Dust-free.
5.1 Unit adsorption capacity
BB/T 0049-2008
Generally speaking, the unit adsorption capacity should be: a): 3.00g (when the relative humidity is 20%); b) 6.00g (when the relative humidity is 40%). 5.2 Unit adsorption rate
The amount of water vapor adsorbed by a bag of desiccant with a specification of no more than 16 units in 7 hours should be: when the relative humidity is 40%, the minimum adsorption value is 0.25g; when the relative humidity is 80%, the minimum adsorption value is 0.70g. 5.3 The number of desiccant units per bag
The number of desiccant units contained in the desiccant bag should be clearly marked, and the actual number of desiccant units per bag should be It should be no less than 95% of the number of units indicated on the bag mark.
5.4 Adsorption capacity and speed after activation
The adsorption capacity after activation should maintain 90% of the original unit adsorption capacity, and the adsorption speed should not be less than 80% of the original unit adsorption speed.
5.5 Physical and chemical indicators
Physical and chemical indicators are shown in Table 1.
Table 1 Physical and chemical indicators
Project name
T Drying weight loss
5.6 Corrosion
Test method
When the bagged desiccant and the lower desiccant themselves come into contact with steel, brass, magnesium alloy and aluminum alloy, they should not cause corrosion. 5.7 Dust
The amount of dust generated by the J-type desiccant should meet the requirements of Table 2. Table 21 Dust volume generated by type II desiccant Requirements for loading Specifications Units Test number At least 6 bags Dust weight not exceeding At least 8 bags Dust tray not exceeding Dust volume in this range No more than 2 bags 60 - 200 60 ~ 200 60 ~ 200 5.7.2 Type II desiccant, regardless of bag size, should generate no more than 0.5 mg of dust. 5.8 Hygiene index The number of bags exceeding this dust volume should not exceed 1 The total number of bacteria, coliform group, mold and other hygienic indexes and heavy metals of desiccant used for food and medicine should comply with relevant national standards.
6 Test method
6.1 Determination of unit adsorption capacity
6.1.1 Test steps:
BB/T 00492008
The test device is shown in Figure 1. Take a desiccant of suitable size and place a sulfuric acid solution of quantitative concentration at the bottom of the device so as to obtain the required relative humidity at 25°C±2°C according to Table 3. Table 3 Relative humidity at 25°C
Density of sulfuric acid solution, g/mE
Percentage concentration of sulfuric acid, %
1-Desiccant; 2-Sample; 3-Porcelain plate with holes; 4-Sulfuric acid solution Figure 1 Schematic diagram of desiccant adsorption capacity test device 25°C Sample relative humidity, %
Prepare sulfuric acid aqueous solutions of different concentrations according to Table 3 to maintain a relative humidity of 20%, 40% and 80% in the closed container. Weigh 6g~10g of the desiccant sample in a constant-weight weighing bottle, accurate to 0.001. Be careful to keep the material exposed to the air as short as possible. Place the weighing bottle on a perforated porcelain plate (as shown in Figure 1) F and maintain a temperature of 25℃±2℃. Take out the plate from the desiccator regularly and weigh it. This process is repeated until about 1h, and the difference between two consecutive weighings does not exceed 5mg. 6.1.2 Calculation of test results,
At the specified relative humidity, the desiccant adsorption capacity is calculated using formula (1). The test results are expressed as arithmetic mean, accurate to 0.001g.
Unit adsorption capacity =
Where:
U—unit mass, B;
G weight gain of sample, B;
Original mass of sample, B
6.2 Determination of unit adsorption rate
6.2.1 Test steps:
Take a 5\. ~101. capacity bottle with an air inlet at the top and an air outlet near the bottom, and place a certain amount of 3
BB/T 00492008
sulfuric acid solution at the bottom of the vessel so as to obtain the required relative humidity at 25℃±2℃ according to Table 3. The test container should be large enough to allow air to flow freely over all surfaces of the bag containing the desiccant, and the container should not be in contact with any part of the bag. Allow air to flow from the top inlet of the test container to the bottom outlet. Weigh the bag containing the desiccant, and then immediately hang the bag in the bottle with a tie or elastic clip, allowing air to flow through the test container at a rate of 4L/min±0.5]/min. Take out the bag and weigh it after 7 hours. 6.2.2 Calculation of test results:
The unit adsorption rate is expressed by the amount of water vapor adsorbed per unit of desiccant in 7 hours, accurate to 0.001, calculated by (2), the amount of water vapor adsorbed per unit of desiccant in 7 hours =:
G-weight gain of the sample, g;
U——unit content marked on the bag.
6.3 Determination of adsorption capacity and rate after activation G
+...+++. ((2)
Hang two bags of desiccant in a closed container with a water-sensitive container under the sample. Place it at 25℃±2℃ for at least 16h. Take it out and hang it in a ventilated oven to maintain the activation conditions, that is, the activation temperature should not be lower than 118℃ and the activation time should be less than 24h. Repeat the above saturation and activation process and put it in a desiccator to cool. Use the bag of desiccant to measure only the unit adsorption capacity at a relative humidity of 40% according to the provisions of 6.1 and report the results; use another bag of desiccant according to 6.2 Determine the unit adsorption rate at a relative humidity of 40% and report the result. 6.4 Determination of dry explosion weight loss
8.4.1 Test steps:
Use a flat weighing bottle to weigh 2g~3g of sample (accurate to 0.001g), place it in a hot air circulation oven controlled at [20%, ±5 for 30 minutes, and then place it in a desiccator under F for 30 minutes and weigh it. 6.4.2 Calculation of test results:
Dry explosion weight loss is calculated by formula (3), and the test results are expressed as the arithmetic mean, accurate to 0.001g. Dry explosion weight loss
W——mass before drying,;||tt| |W,-dry mass, g
6.5 Determination of pH value
×100%
Weigh 10.0g±0.1g sample, put it in a 300mL beaker, add 200rmL steamed stuffing water, cover the surface with IEL, heat at 80℃±3%: for 30min, cool to room temperature, take the supernatant and use an acidity meter (division value is 0.1) to determine the pH value of the solution. The obtained pH value should not exceed the specified value in Table 1.
6.6 Determination of corrosiveness
Crush 20g of desiccant, keep the part that passes through the No. 40 sieve and does not pass through the No. 80 sieve, and put it into Place in a dryer at 25℃ and 60% relative humidity for at least 24h. Prepare metal test pieces of 50mm×25mm×3mm and 300mm×100mm×6mm, made of low carbon steel, No. 62 brass, MB2 magnesium alloy and LY-12 aluminum alloy. All of them should be polished and polished to a surface with R of 0.100μm~0.200μm. Two test pieces of each metal are cleaned in the following order: 4
a) Washing gasoline, soak twice with warm water;
b) Soak in 95% ethanol;
) Rinse quickly with anhydrous ethanol,
BB/T 00492008
During and after cleaning, only tweezers are allowed to hold the surface of the metal test piece, or metal wire is allowed to pass through the pre-drilled holes on the edges and corners of the test piece for operation. Do not wipe, but immediately blow dry with cold air after rinsing with anhydrous ethanol. Cover half of each small test piece with unpacked desiccant, and cover half of each large test piece with bagged desiccant. Put the metal test piece in a desiccator with a relative humidity of 2%. Put the desiccator in a constant temperature box at 38℃±1℃, take out the test piece after 72 hours, carefully brush it with a camel hair brush, and visually compare the corrosion of the covered and uncovered surfaces.
6.7 Determination of dust
6.7.1 Test device:
Use a container of about 10L, the container The device is equipped with a removable cover. The inner metal surface of the tank should be cleaned, all internal gaps should be welded tightly, and smooth and even. The vibration device consists of a workbench, which can perform cyclic vibration displacement in the vertical plane. This vibration is carried out at 300r/min±5r/min by an eccentric wheel with an eccentricity of 12.7mm. 6.7.2 Test procedure:
Place the sample flat in a clean container with the printed mark facing up in a visible position. If the bag is too large to be placed flat in the device, the bottom of the bag can be placed flat along the bottom seam of the container , one part against a relative vertical plane. Cover the container tightly and fix the container firmly on the vibration table. Vibrate for 30 minutes. At the end of the vibration, carefully open the vibrator and brush all the dust on the inner surface of the cover into the vibrator with a camel hair brush. Brush all the dust collected in the container into a bottle with a lid that has been dried to its weight, and weigh it carefully and quickly, and record all the dust values.
Marking, packaging, storage and transportation
7.1 Marking
7.1.1 The number of desiccant units contained should be clearly marked on the desiccant packaging bag. 7.1 .2 The packaging box should be marked with: product name, manufacturer name and address, trademark, production standard, specification model, quantity, quality, production date (or batch number) and validity period.
7.1.3 The outer packaging delivery and receipt marks should comply with the relevant provisions of GB/T6388, and the outer packaging storage and transportation graphic marks should comply with the relevant provisions of GB/T191, "use", "moisture-proof" mark 7.2 Packaging
7.2.1 The inner packaging bag of the desiccant should be made of a barrier composite material with air permeability and a certain strength, and the bag should be made by heat method. The sealing and bonding must be tight and reliable.
7.2.2 The outer packaging shall be made of corrugated boxes, paper barrels or multi-layer woven bags, and sealed with plastic film. 7.2.3 Instructions for use and product certificates shall be placed in each outer packaging: 7.2.4 The unit quantity of desiccant contained in the packaging bag shall be combined with the amount used at one time. 7.3 Storage and transportation
7.3.1 The product shall be stored in a clean warehouse that is dry and free of chemical pollutants and shall not be exposed to moisture. It is not allowed to be stored in the same warehouse with volatile substances for a long time.
7.3.2 During the transportation of the product, 1. Improper labeling should be avoided, and the outer packaging should be prevented from being damaged. Avoid contact with acidic and alkaline substances and avoid rain. 5
BB/T0049-2008
References
11GB/T5009.74-2003 Test for the limits of heavy metals in food additives[2] GB 7100—2003 Hygienic standard for biscuits[3] GB 9687—1988
Hygienic standard for polyethylene molded products for food packaging［4] GJB2714—1996 General specification for active desiccant in static hygroscopic bags for packaging6(2)
Hang two bags of desiccant in a closed container with a water-sensitive container under the sample. Place it at 25℃±2℃ for at least 16h. Take it out and hang it in a ventilated oven to maintain the activation conditions, that is, the activation temperature should not be lower than 118℃ and the activation time should be less than 24h. Repeat the above saturation and activation process and put it in a desiccator to cool. Use the bag of desiccant to measure the unit adsorption capacity at a relative humidity of 40% according to the provisions of 6.1 and report the results; use another bag of desiccant to measure the unit adsorption rate at a relative humidity of 40% according to the provisions of 6.2 and report the results. .4 Determination of dry explosion weight loss
8.4.1 Test steps:
Use a flat weighing bottle to weigh 2g~3g of sample (accurate to 0.001g), place it in a hot air circulation oven controlled at [20%, ±5 for 30 minutes, and then place it in a dryer under F for 30 minutes before weighing. 6.4.2 Calculation of test results:
Dry explosion weight loss is calculated by formula (3), and the test results are expressed as arithmetic mean, accurate to 0.001g. Dry explosion weight loss
W——mass before drying,;
W,-dry mass, g
6.5 Determination of pH value
×100%
Weigh 10.0g±0.1g of sample, put it in a 300mL beaker, add 200mL of steamed water, cover with a cover, heat at 80℃±3%: for 30min, cool to room temperature, take the supernatant and use an acidity meter (division value is 0.1) to determine the pH value of the solution. The obtained pH value should not exceed the specified value in Table 1.
6.6 Determination of corrosiveness
Crush 20g of desiccant, keep the part that passes through the No. 40 sieve and does not pass through the No. 80 sieve, put it in a desiccator, and heat it at 25℃. Place at least 24h under 60% humidity = Prepare 50mm×25mm×3mml and 300mm×100mm×6mm metal test pieces, the materials are low carbon steel, 62# brass, MB2 magnesium alloy and LY-12 aluminum alloy respectively. All of them are polished and polished to a surface with R of 0.100μm~0.200μm. Two test pieces of each metal are cleaned in the following order: 4
a) Washing gasoline, soak twice with warm water;
b) 95% ethanol soaking;
) Anhydrous ethanol, rinse quickly,
BB/T 00492008
During and after cleaning, only tweezers are allowed to hold the metal test piece surface, or metal wire is allowed to pass through the pre-drilled holes on the edges and corners of the test piece for operation. Do not wipe, but immediately blow dry with cold air after rinsing with anhydrous ethanol. Cover half of each small test piece with unpacked desiccant, and cover half of each large test piece with bagged desiccant. Put the metal test piece in a desiccator with a relative humidity of 2%. Put the desiccator in a constant temperature box at 38℃±1℃, take out the test piece after 72 hours, carefully brush it with a camel hair brush, and visually compare the corrosion of the covered and uncovered surfaces.
6.7 Determination of dust
6.7.1 Test device:
Use a container of about 10L, the container The device is equipped with a removable cover. The inner metal surface of the tank should be cleaned, all internal gaps should be welded tightly, and smooth and even. The vibration device consists of a workbench, which can perform cyclic vibration displacement in the vertical plane. This vibration is carried out at 300r/min±5r/min by an eccentric wheel with an eccentricity of 12.7mm. 6.7.2 Test procedure:
Place the sample flat in a clean container with the printed mark facing up in a visible position. If the bag is too large to be placed flat in the device, the bottom of the bag can be placed flat along the bottom seam of the container , one part against a relative vertical plane. Cover the container tightly and fix the container firmly on the vibration table. Vibrate for 30 minutes. At the end of the vibration, carefully open the vibrator and brush all the dust on the inner surface of the cover into the vibrator with a camel hair brush. Brush all the dust collected in the container into a bottle with a lid that has been dried to its weight, and weigh it carefully and quickly, and record all the dust values.
Marking, packaging, storage and transportation
7.1 Marking
7.1.1 The number of desiccant units contained should be clearly marked on the desiccant packaging bag. 7.1 .2 The packaging box should be marked with: product name, manufacturer name and address, trademark, production standard, specification model, quantity, quality, production date (or batch number) and validity period.
7.1.3 The outer packaging delivery and receipt marks should comply with the relevant provisions of GB/T6388, and the outer packaging storage and transportation graphic marks should comply with the relevant provisions of GB/T191, "use", "moisture-proof" mark 7.2 Packaging
7.2.1 The inner packaging bag of the desiccant should be made of a barrier composite material with air permeability and a certain strength, and the bag should be made by heat method. The sealing and bonding must be tight and reliable.
7.2.2 The outer packaging shall be made of corrugated boxes, paper barrels or multi-layer woven bags, and sealed with plastic film. 7.2.3 Instructions for use and product certificates shall be placed in each outer packaging: 7.2.4 The unit quantity of desiccant contained in the packaging bag shall be combined with the amount used at one time. 7.3 Storage and transportation
7.3.1 The product shall be stored in a clean warehouse that is dry and free of chemical pollutants and shall not be exposed to moisture. It is not allowed to be stored in the same warehouse with volatile substances for a long time.
7.3.2 During the transportation of the product, 1. Improper labeling should be avoided, and the outer packaging should be prevented from being damaged. Avoid contact with acidic and alkaline substances and avoid rain. 5
BB/T0049-2008
References
11GB/T5009.74-2003 Test for the limits of heavy metals in food additives[2] GB 7100—2003 Hygienic standard for biscuits[3] GB 9687—1988
Hygienic standard for polyethylene molded products for food packaging［4] GJB2714—1996 General specification for active desiccant in static hygroscopic bags for packaging6(2)
Hang two bags of desiccant in a closed container with a water-sensitive container under the sample. Place it at 25℃±2℃ for at least 16h. Take it out and hang it in a ventilated oven to maintain the activation conditions, that is, the activation temperature should not be lower than 118℃ and the activation time should be less than 24h. Repeat the above saturation and activation process and put it in a desiccator to cool. Use the bag of desiccant to measure the unit adsorption capacity at a relative humidity of 40% according to the provisions of 6.1 and report the results; use another bag of desiccant to measure the unit adsorption rate at a relative humidity of 40% according to the provisions of 6.2 and report the results. .4 Determination of dry explosion weight loss
8.4.1 Test steps:
Use a flat weighing bottle to weigh 2g~3g of sample (accurate to 0.001g), place it in a hot air circulation oven controlled at [20%, ±5 for 30 minutes, and then place it in a dryer under F for 30 minutes before weighing. 6.4.2 Calculation of test results:
Dry explosion weight loss is calculated by formula (3), and the test results are expressed as arithmetic mean, accurate to 0.001g. Dry explosion weight loss
W——mass before drying,;
W,-dry mass, g
6.5 Determination of pH value
×100%bzxz.net
Weigh 10.0g±0.1g of sample, put it in a 300mL beaker, add 200mL of steamed water, cover with a cover, heat at 80℃±3%: for 30min, cool to room temperature, take the supernatant and use an acidity meter (division value is 0.1) to determine the pH value of the solution. The obtained pH value should not exceed the specified value in Table 1.
6.6 Determination of corrosiveness
Crush 20g of desiccant, keep the part that passes through the No. 40 sieve and does not pass through the No. 80 sieve, put it in a desiccator, and heat it at 25℃. Place at least 24h under 60% humidity = Prepare 50mm×25mm×3mml and 300mm×100mm×6mm metal test pieces, the materials are low carbon steel, 62# brass, MB2 magnesium alloy and LY-12 aluminum alloy respectively. All of them are polished and polished to a surface with R of 0.100μm~0.200μm. Two test pieces of each metal are cleaned in the following order: 4
a) Washing gasoline, soak twice with warm water;
b) 95% ethanol soaking;
) Anhydrous ethanol, rinse quickly,
BB/T 00492008
During and after cleaning, only tweezers are allowed to hold the metal test piece surface, or metal wire is allowed to pass through the pre-drilled holes on the edges and corners of the test piece for operation. Do not wipe, but immediately blow dry with cold air after rinsing with anhydrous ethanol. Cover half of each small test piece with unpacked desiccant, and cover half of each large test piece with bagged desiccant. Put the metal test piece in a desiccator with a relative humidity of 2%. Put the desiccator in a constant temperature box at 38℃±1℃, take out the test piece after 72 hours, carefully brush it with a camel hair brush, and visually compare the corrosion of the covered and uncovered surfaces.
6.7 Determination of dust
6.7.1 Test device:
Use a container of about 10L, the container The device is equipped with a removable cover. The inner metal surface of the tank should be cleaned, all internal gaps should be welded tightly, and smooth and even. The vibration device consists of a workbench, which can perform cyclic vibration displacement in the vertical plane. This vibration is carried out at 300r/min±5r/min by an eccentric wheel with an eccentricity of 12.7mm. 6.7.2 Test procedure:
Place the sample flat in a clean container with the printed mark facing up in a visible position. If the bag is too large to be placed flat in the device, the bottom of the bag can be placed flat along the bottom seam of the container , one part against a relative vertical plane. Cover the container tightly and fix the container firmly on the vibration table. Vibrate for 30 minutes. At the end of the vibration, carefully open the vibrator and brush all the dust on the inner surface of the cover into the vibrator with a camel hair brush. Brush all the dust collected in the container into a bottle with a lid that has been dried to its weight, and weigh it carefully and quickly, and record all the dust values.
Marking, packaging, storage and transportation
7.1 Marking
7.1.1 The number of desiccant units contained should be clearly marked on the desiccant packaging bag. 7.1 .2 The packaging box should be marked with: product name, manufacturer name and address, trademark, production standard, specification model, quantity, quality, production date (or batch number) and validity period.
7.1.3 The outer packaging delivery and receipt marks should comply with the relevant provisions of GB/T6388, and the outer packaging storage and transportation graphic marks should comply with the relevant provisions of GB/T191, "use", "moisture-proof" mark 7.2 Packaging
7.2.1 The inner packaging bag of the desiccant should be made of a barrier composite material with air permeability and a certain strength, and the bag should be made by heat method. The sealing and bonding must be tight and reliable.
7.2.2 The outer packaging shall be made of corrugated boxes, paper barrels or multi-layer woven bags, and sealed with plastic film. 7.2.3 Instructions for use and product certificates shall be placed in each outer packaging: 7.2.4 The unit quantity of desiccant contained in the packaging bag shall be combined with the amount used at one time. 7.3 Storage and transportation
7.3.1 The product shall be stored in a clean warehouse that is dry and free of chemical pollutants and shall not be exposed to moisture. It is not allowed to be stored in the same warehouse with volatile substances for a long time.
7.3.2 During the transportation of the product, 1. Improper labeling should be avoided, and the outer packaging should be prevented from being damaged. Avoid contact with acidic and alkaline substances and avoid rain. 5
BB/T0049-2008
References
11GB/T5009.74-2003 Test for the limits of heavy metals in food additives[2] GB 7100—2003 Hygienic standard for biscuits[3] GB 9687—1988
Hygienic standard for polyethylene molded products for food packaging［4] GJB2714—1996 General specification for active desiccant in static hygroscopic bags for packaging61 Test apparatus:
Use a container tank of about 10L with a removable cover. The inner metal surface of the tank should be cleaned, all internal gaps should be welded tightly and smooth. The vibration device consists of a workbench that can perform cyclic vibration displacement in a vertical plane. This vibration is carried out by an eccentric wheel with an eccentricity of 12.7mm at 300r/min±5r/min. 6.7.2 Test procedures:
Place the sample flat in a clean container with the printed logo facing up and in a visible position. If the bag is too large to be placed flat in the container, the bottom of the bag can be placed flat along the bottom seam of the container, with the top resting on a relative vertical plane. Cover the container tightly and fix the container firmly on the vibration table. Vibrate for 30 minutes. At the end of the vibration, carefully open the vibrator and brush all dust on the inner surface of the cover into the vibrator with a camel hair brush. Brush all the dust collected in the container into a bottle with a lid that has been dried to the desired weight, weigh it carefully and quickly, and record all the dust values.
Marking, packaging, storage and transportation
7.1 Marking
7.1.1 The number of desiccant units contained should be clearly marked on the desiccant packaging bag. 7.1.2 The packaging box should be marked with: product name, manufacturer name and address, trademark, production standard, specification model, quantity, quality, production date (or batch number) and expiration date.
7.1.3 The outer packaging delivery and receipt marks shall comply with the relevant provisions of GB/T6388, and the outer packaging storage and transportation graphic marks shall comply with the relevant provisions of GB/T191, "use", "moisture-proof" mark 7.2 Packaging
7.2.1 The inner packaging bag of the desiccant shall be made of a barrier composite material with air permeability and a certain strength, and the bag shall be made by heat method. The sealing 11 bonding must be tight and reliable.
7.2.2 The outer packaging shall be made of corrugated paper boxes, paper barrels or multi-layer woven bags, and sealed with plastic film 7.2.3 Each outer packaging shall contain the instruction manual and product certificate: 7.2.4 The packaging bag contains The unit quantity of desiccant should be combined with the amount used at one time. 7.3 Storage and transportation
7.3.1 The product should be stored in a clean warehouse that is dry and free of chemical pollutants and should not be exposed to moisture. It is not allowed to be stored in the same warehouse with volatile substances for a long time.
7.3.2 During the transportation of the product, 1. improper labeling should be avoided, and the outer packaging should be prevented from being damaged. Avoid contact with acidic and alkaline substances and avoid rain. 5
BB/T0049-2008
References
11GB/T5009.74-2003 Test for the limit of heavy metals in food additives [2] GB 7100—2003 Hygienic standard for biscuits [3] GB 9687—1988
Hygienic standard for polyethylene molded products for food packaging [4] GJB2714—1996 General specification for active desiccant in static hygroscopic bags for packaging 61 Test apparatus:
Use a container tank of about 10L with a removable cover. The inner metal surface of the tank should be cleaned, all internal gaps should be welded tightly and smooth. The vibration device consists of a workbench that can perform cyclic vibration displacement in a vertical plane. This vibration is carried out by an eccentric wheel with an eccentricity of 12.7mm at 300r/min±5r/min. 6.7.2 Test procedures:
Place the sample flat in a clean container with the printed logo facing up and in a visible position. If the bag is too large to be placed flat in the container, the bottom of the bag can be placed flat along the bottom seam of the container, with the top resting on a relative vertical plane. Cover the container tightly and fix the container firmly on the vibration table. Vibrate for 30 minutes. At the end of the vibration, carefully open the vibrator and brush all dust on the inner surface of the cover into the vibrator with a camel hair brush. Brush all the dust collected in the container into a bottle with a lid that has been dried to the desired weight, weigh it carefully and quickly, and record all the dust values.
Marking, packaging, storage and transportation
7.1 Marking
7.1.1 The number of desiccant units contained should be clearly marked on the desiccant packaging bag. 7.1.2 The packaging box should be marked with: product name, manufacturer name and address, trademark, production standard, specification model, quantity, quality, production date (or batch number) and expiration date.
7.1.3 The outer packaging delivery and receipt marks shall comply with the relevant provisions of GB/T6388, and the outer packaging storage and transportation graphic marks shall comply with the relevant provisions of GB/T191, "use", "moisture-proof" mark 7.2 Packaging
7.2.1 The inner packaging bag of the desiccant shall be made of a barrier composite material with air permeability and a certain strength, and the bag shall be made by heat method. The sealing 11 bonding must be tight and reliable.
7.2.2 The outer packaging shall be made of corrugated paper boxes, paper barrels or multi-layer woven bags, and sealed with plastic film 7.2.3 Each outer packaging shall contain the instruction manual and product certificate: 7.2.4 The packaging bag contains The unit quantity of desiccant should be combined with the amount used at one time. 7.3 Storage and transportation
7.3.1 The product should be stored in a clean warehouse that is dry and free of chemical pollutants and should not be exposed to moisture. It is not allowed to be stored in the same warehouse with volatile substances for a long time.
7.3.2 During the transportation of the product, 1. improper labeling should be avoided, and the outer packaging should be prevented from being damaged. Avoid contact with acidic and alkaline substances and avoid rain. 5
BB/T0049-2008
References
11GB/T5009.74-2003 Test for the limit of heavy metals in food additives [2] GB 7100—2003 Hygienic standard for biscuits [3] GB 9687—1988
Hygienic standard for polyethylene molded products for food packaging [4] GJB2714—1996 General specification for active desiccant in static hygroscopic bags for packaging 6
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