QB/T 3531-1999 Composite flexible packaging materials for liquid food
Some standard content:
Light Industry Standard of the People's Republic of China
Composite Flexible Packaging Materials for Liquid Food
Subject Content and Scope of Application
This standard specifies the technical specifications for composite flexible packaging materials for liquid food. QB/T 3531--1999
Replaces ZBY 39002--1989
This standard applies to materials made of base paper, high-pressure low-density polyethylene, aluminum foil, etc., extruded and composited, and specially used for aseptic filling machines of Swedish Tetra Pak to package liquid food.
Referenced Standards
GB/T2828 Batch Inspection Count Sampling Procedure and Sampling Table (Applicable to Inspection of Continuous Batch) GBn84 Hygienic Standard for Polyethylene Finished Products for Food Packaging GBn88 Hygienic Standard for Polyethylene Resin for Food Packaging 3 Product Classification
3.1 Products are divided into three grades: A, B, and C.
3.2 Product Model
3.2.1TBA-250: Tetra Brick Package 250mL3.2.2TSA-250: Tetra Standard Package 250mL3.2.3 Product Symbol Explanation
TB--TETRA BRICK
Tetra Brick Package
TS—TETRASTANDARD Tetra Standard Package A-ACEPITIC Aseptic, refers to liquid food packaged with this material without refrigeration. 250-250mL refers to the packaging capacity of the packaging box. 3.3 The product is in the form of a roll, the maximum roll diameter is 620mm, the roll width is 214mm for TBA-250 and 229mm for TSA-250.
4 Technical Requirements
4.1 The three major raw materials required for liquid food composite flexible packaging materials should be strictly controlled, please refer to Appendix A, Appendix B and Appendix C. 4.2 The technical indicators of liquid food composite flexible packaging materials must comply with the provisions of Table 1. Table 1
Indicator name
Overprint accuracy
Adhesion between plastic film and aluminum foil
Adhesion between plastic film and paper
Quantitative deviation of plastic film coating
Deviation of packaging box width
Registration deviation between indentation line and printed pattern
Deviation of slitting position
Approved by the State Bureau of Light Industry on April 21, 1999
Implemented on March 1, 1999
QB/T3531—1999
4.3 Hygiene requirements: This product is required to be non-toxic and harmless, and the hygiene requirements of the inner layer of polyethylene must comply with the provisions of GBn88 and GBn84. 4.4 Appearance
4.4.1 The printed pattern is clear and complete, without obvious deformation, incompleteness and misprinting. 4.4.2 The indentation line is flat and there is no cracking. 4.4.3 The product is clean, and the end of the roll is neat and has no burrs. 4.4.4 The product surface is not allowed to have holes, cracks, bubbles, aluminum foil and plastic film defects and other appearance paper defects. 4.5 Joint requirements
4.5.1 The number of joints per roll of product shall not exceed 3, or be implemented according to the supply contract. 4.5.2 The distance between the two joints of each roll of product shall not be less than 25m. 4.5.3 The distance between the joint and the head and tail of each roll of product shall not be less than 25m. 4.5.4 The surface of the joint of each roll of product shall be affixed with red tape, and the position of the joint shall be indicated by an arrow on the end of the roll. 5 Test method
5.1 Overprint deviation
5.1.1 Light source: D65 standard light source with a color temperature of 5500K-6500K. 5.1.2 Tools: Magnifying glass with a scale of 0.2mm accuracy. 5.1.3 Test steps
Under the light source specified in 5.1.1, test the overprint deviation between any two colors of the sample, measure three points each, and take the average value as the overprint deviation, accurate to -1 decimal places.
5.2 Adhesion between plastic film and aluminum foil
5.2.1 Test instrument: Adhesion measuring instrument. 5.2.2 Test conditions: Roller transfer speed 10cm/min, adhesion measurement range 9.8N. 5.2.3 Sample treatment
If the plastic film is sarin resin, no sample treatment will be performed. If it is high-pressure low-density polyethylene, the following treatment will be performed. 5.2.3.1 Cut three samples of 25mm width and 300mm length from the product longitudinally. 5.2.3.2 Soak the sample in water at (75±5)℃ for 20s, and then cool it in cold water for 5s. 5.2.4 Test steps
5.2.4.1 Cut off a little bit of one end of the sample. Separate the plastic film from the aluminum foil, fix the cut end of the sample on the clamping device and send the separated plastic film to the curling roller of the instrument for compaction. 5.2.4.2 Start the instrument for testing, read the data after it stabilizes, and express the result as the average value of three samples, accurate to two decimal places.
5.3 Adhesion between plastic film and paper
Cut three samples of 25mm width and 300mm length from the product, and separate the plastic film from the paper along the new cut. Slowly separate the film longitudinally from this loosened cut, and the width of the separated plastic film should be the same as the width of the narrow strip. Then rotate the narrow strip 180° and separate it in the same way in this direction, and express it as the percentage of the area occupied by the plastic film sticking to the paper hair, and express the result as the average value of three samples, accurate to integers.
5.4 Quantitative deviation of plastic film coating
5.4.1 Test equipment: balance with an accuracy of 0.001g, 100cm2 round knife, 1:1 mixture of toluene and ethanol, constant temperature water bath. 5.4.2 Test conditions: Use a constant temperature water bath to heat the mixture of toluene and ethanol to (60±5)℃. 5.4.3 Test steps
5.4.3.1 Use a round knife to cut three samples with an area of 100cm2 on the sample. 5.4.3.2 Soak the sample in the mixture of toluene and ethanol for 10 minutes. Or first separate the inner plastic film and then put the rest into the mixture of toluene and ethanol.
QB/T 3531
1—1999
5.4.3.3 Take out the sample, separate the layers of plastic film, without paper wool and aluminum foil, weigh them separately on the balance, multiply the reading by 100 to get the coating quantity of the plastic film, the difference from the specified value is the coating quantity deviation of the plastic film, express the result with the average value of three samples, accurate to one decimal place.
5.5 Registration deviation between indentation line and printed pattern and deviation of slitting position and width of packaging box 5.5.1 Measuring tools: tape measure with an accuracy of 1mm and magnifying glass with a scale of 0.2mm. 5.5.2 Test steps
Take three product samples, measure their lengths at the parts with specified dimensions, the difference from the specified dimensions is the deviation of each, express the result with the average value of three samples, accurate to one decimal place. 6 Inspection rules
6.1 The quantity delivered at one time is a batch, but each batch cannot exceed 440 rolls. 6.2 The unit of acceptance inspection for composite flexible packaging materials for liquid food is roll. 6.3 The acceptance inspection sampling inspection plan shall be carried out in accordance with the provisions of GB/T2828. The group inspection level, sampling inspection plan and qualified quality level (AQL) of acceptance test items shall be in accordance with the provisions of Table 2. 6.4
Sampling plan
Batch (roll)
91～500
Inspection level S-4
Normal secondary sampling
Class B non-conforming products
Sample size
Class C non-conforming products
Non-conforming classification
Class B non-conforming
Number of broken indentation lines
Appearance paper disease
Plastic film and aluminum foil adhesion
Plastic film and paper adhesion
Joint Head requirements
Class C non-conformity
Indentation line and printed pattern
Pattern registration deviation
Slitting position deviation
Plastic film coating quantity
Box width deviation
6.5 The manufacturer shall ensure that the liquid food composite flexible packaging materials produced meet the requirements of this standard. If the user has any objection to the batch of products, he shall notify the manufacturer for joint re-inspection within three months after arrival. If it does not meet the requirements of this standard, it shall be judged as a batch non-conformity and the manufacturer shall be responsible for handling it. 7 Marking, packaging, transportation, storage
7.1 Each roll of product is affixed with a label with the Tetra Pak company trademark, manufacturer name and address, user name, product model, number of boxes, roll number and order number.
7.2 Each roll of product is wrapped with shrink film. 7.3 Each beat is stacked with 20 rolls of products, and after being neatly stacked, they are packaged with shrink film. 7.4 The product should be properly stored to prevent rain, snow, and ground moisture. It is not allowed to be mixed with dirt, oil, acid, alkali, etc. to avoid contamination. It is strictly forbidden to squeeze with large objects.
7.5 The product should be transported using a canopy and clean transportation tool. 7.6 It is strictly forbidden to collide during transportation, and it is not allowed to drop the package from a high place or roll it on the ground. 7.7 If the product deteriorates or its quality declines due to storage and transportation not complying with the provisions of this standard, the relevant parties shall be responsible. 606
A1 Technical indicators
Indicator name
Tensile strength
Elongation
Roughness
Internal bonding
Edge wet water 23℃
Surface strength
QB/T 3531-1999
Appendix A
Technical requirements for base paper of composite flexible packaging materials for liquid food (reference)
mL/min
mL/min
Denison value
Specified value
175.0±15.
270±20
≥100
≤2200
≥145
Test method
According to GB/T 451.2 Tested
Tested according to GB/T 451.3
Tested according to GB/T2679
Tested according to GB/T453
Tested according to GB/T 453
Tested according to GB/T 2679.4
Tested according to GB/T8940.1
Tested according to GB/T462
Take 5 samples of 25.4mm×177.8mm and test them on Scot B The clamping pressure is 3.5kg/cm2. The result is read from the scale plate and multiplied by 2.1. Take 5 samples of 25mm×75mm, stick the two sides of the sample tightly with waterproof tape, weigh it, put it in 1% lactic acid solution and soak it for 1h, take it out and weigh it, and finally calculate the result according to the following formula. Weight after immersion minus weight before immersion (mg) Wet water on the edge = circumference of the sample (m) × thickness of the sample (m) Spread No. 12 wax on the alcohol lamp and burn it, immediately put it gently on the sample, cool it for 15 minutes, and then pull it up vertically. If there is paper hair sticking, it is unqualified. The paper surface should be flat, and there should be no folds, cracks, holes, hard blocks and other appearance paper defects that affect the use. 607
B1 Technical indicators
Indicator name
Melt index
Melt index
19℃/2.15g
216℃/10g
Extract
Health requirements
QB/T3531-1999
Appendix B
Technical requirements for low-density polyethylene for composite flexible packaging materials for liquid food (reference)
g/10min
g/10min
Specified value
1.07±0.08
Health requirements must comply with the provisions of GBn88 and GBn84. Appendix C
Test method
Determine according to HG 2-1171
Determine according to HG 2-1171
Ratio = MFI216/MF1190
Take (2±0.2)g of the polyethylene extrusion strip with a melt index of 216℃/10g and put it into the extractor. Add 200mL of trifluoromethane solvent and extract for 1h. Take out the polyethylene strip and put it into an oven at 85℃ to dry for 5h, then weigh it and calculate the result according to the following formula:
2(% )=weight before extraction=weight after sugar intake×10weight before extraction
Take 100g of mulberry ethylene and put it in an oven at (105±2)℃ for 1h, weigh it on a balance, and then calculate the result according to the following formula:
Water content (%)=weight before delivery Class II weight after delivery×10weight before baking
Technical requirements for aluminum foil of composite flexible packaging materials for liquid food (reference)
C1 Technical indicators
Indicator name
Specified value
18.0±1.5
Test method
On the aluminum foil sample, sandwich a layer of aluminum foil between two pieces of 350mm×350mm paper, cut three samples with a 100cm2 circular knife, take out the aluminum foil respectively and weigh them on a balance, multiply the result by 100, take the average value of the three samples
Calculate according to the following formula:
Thickness = Basis weight (g/m2),
2.7 (g/ cm3)×104
Number of pinholes
C2 Appearance
Pieces/m2
QB/T3531—1999
Continued Table C
Specified value
≤700
Test method
Put the aluminum foil sample on the light box, count the number of pinholes per 100cm2, multiply the result by 100, and take the average value of three samples. The surface of the aluminum foil should be clean and bright, without holes, cracks, defects, adhesion between layers, oxidation, and oil stains. Additional remarks:
This standard was proposed by the Paper Industry Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Paper Standardization Center. This standard was drafted by the Beijing Pulp and Paper Experimental Plant. The main drafter of this standard is Wang Guoqi.
This standard is equivalent to the standard of Swedish Tetra Pak. (Technology transfer contract number for Tetra Pak packaging material manufacturing: CSHM/4057A).2) Put the polyethylene strip into the extractor, add 200mL trifluoromethane solvent and extract for 1h, take out the polyethylene strip and put it in an oven at 85℃ to dry for 5h, then weigh it, and calculate the result according to the following formula:
2(%) = weight before extraction = weight after sugar extraction × 10 weight before extraction
Take 100g of mulberry ethylene and put it in an oven at (105±2)℃ for 1h, weigh it on the balance, and then calculate the result according to the following formula:
Moisture (%) = weight before delivery weight after class II × 10 weight before baking
Technical requirements for aluminum foil of composite flexible packaging materials for liquid food (reference)
C1 Technical indicators
Indicator name
Specified value
18.0±1.5
Test method
On the aluminum foil sample, sandwich a layer of aluminum foil between two pieces of 350mm×350mm paper, cut three samples with a 100cm2 circular knife, take out the aluminum foil respectively and weigh them on a balance, multiply the result by 100, take the average value of the three samples
Calculate according to the following formula:
Thickness = Basis weight (g/m2),
2.7 (g/ cm3)×104
Number of pinholes
C2 Appearance
Pieces/m2
QB/T3531—1999
Continued Table C
Specified value
≤700
Test method
Put the aluminum foil sample on the light box, count the number of pinholes per 100cm2, multiply the result by 100, and take the average value of three samples. The surface of the aluminum foil should be clean and bright, without holes, cracks, defects, adhesion between layers, oxidation, and oil stains. Additional remarks:
This standard was proposed by the Paper Industry Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Paper Standardization Center. This standard was drafted by the Beijing Pulp and Paper Experimental Plant. The main drafter of this standard is Wang Guoqi.
This standard is equivalent to the standard of Swedish Tetra Pak. (Technology transfer contract number for Tetra Pak packaging material manufacturing: CSHM/4057A).2) Put the polyethylene strip into the extractor, add 200mL trifluoromethane solvent and extract for 1h, take out the polyethylene strip and put it in an oven at 85℃ to dry for 5h, then weigh it, and calculate the result according to the following formula:
2(%) = weight before extraction = weight after sugar extraction × 10 weight before extraction
Take 100g of mulberry ethylene and put it in an oven at (105±2)℃ for 1h, weigh it on the balance, and then calculate the result according to the following formula:
Moisture (%) = weight before delivery weight after class II × 10 weight before baking
Technical requirements for aluminum foil of composite flexible packaging materials for liquid food (reference)
C1 Technical indicators
Indicator name
Specified value
18.0±1.5
Test method
On the aluminum foil sample, sandwich a layer of aluminum foil between two pieces of 350mm×350mm paper, cut three samples with a 100cm2 circular knife, take out the aluminum foil respectively and weigh them on a balance, multiply the result by 100, take the average value of the three sampleswwW.bzxz.Net
Calculate according to the following formula:
Thickness = Basis weight (g/m2),
2.7 (g/ cm3)×104
Number of pinholes
C2 Appearance
Pieces/m2
QB/T3531—1999
Continued Table C
Specified value
≤700
Test method
Put the aluminum foil sample on the light box, count the number of pinholes per 100cm2, multiply the result by 100, and take the average value of three samples. The surface of the aluminum foil should be clean and bright, without holes, cracks, defects, adhesion between layers, oxidation, and oil stains. Additional remarks:
This standard was proposed by the Paper Industry Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Paper Standardization Center. This standard was drafted by the Beijing Pulp and Paper Experimental Plant. The main drafter of this standard is Wang Guoqi.
This standard is equivalent to the standard of Swedish Tetra Pak. (Technology transfer contract number for Tetra Pak packaging material manufacturing: CSHM/4057A).
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