This standard specifies the classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of paper-based composite materials for liquid food fresh-keeping packaging. This standard applies to composite materials with base paper as the matrix and plastic compounded for liquid food fresh-keeping packaging. This standard also applies to composite materials with base paper as the matrix and plastic, aluminum foil or other barrier materials compounded for hot filling of liquid food. GB/T 18706-2008 Paper-based composite materials for liquid food fresh-keeping packaging GB/T18706-2008 Standard download decompression password: www.bzxz.net
This standard specifies the classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of paper-based composite materials for liquid food fresh-keeping packaging. This standard applies to composite materials with base paper as the matrix and plastic compounded for liquid food fresh-keeping packaging. This standard also applies to composite materials for hot filling of liquid foods, which are made of base paper and plastic, aluminum foil or other barrier materials.

The clauses in the following documents constitute the clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, all parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions are applicable to this standard.
GB/T191 Pictorial marking for packaging, storage and transportation (GB/T191-2008, ISO780:1997, MOD)
GB/T1038 Test method for air permeability of plastic film (GB/T1038-2000, neq ISO2556:1997)
GB/T1040.3 Determination of tensile properties of plastics Part 3: Test conditions for film and sheeting (GB/T1040.3-2006, ISO527-3:1995, IDT)
GB/T2679.3 Determination of stiffness of paper and paperboard (GB/T2679.3-1996, neq ISO2493:1992)
GB/T2828.1-2003 Sampling inspection procedures for measurement - Part 1: Batch inspection plan based on acceptance quality limit (AQL)
(GB/T2828.1-2003, ISO2859-1:1999, IDT)
GB/T4789.2-2003 Microbiological examination of food hygiene - Determination of total colony count
GB/T4789.3-2003 Microbiological examination of food hygiene - Determination of coliform group
GB/T4789.15-2003 Microbiological examination of food hygiene - Count of molds and yeasts
GB/T5009.60 Methods of analysis of hygienic standards for polyethylene, polystyrene and polypropylene moldings for food packaging
GB/T8808 Peel test method for soft composite plastic materials
GB9685 Hygienic standard for the use of additives for food containers and packaging materials
GB9687 Hygienic standard for polyethylene molded products for food packaging
GB/T10004-1998 Retort-resistant composite films and bags (ｅｑｖＪＩＳＺ１７０７：１９９５)
GB11680 Hygienic standard for base paper for composite packaging
QB/T2358 Test method for heat seal strength of plastic film packaging bags

ICS 55.040
National Standard of the People's Republic of China
GB/T18706—2008
Replaces GB18705—2002
Paper based laminated material for fresh-kecping packaging of liquid food2008-06-25Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of the People's Republic of China
Implemented on 2008-12-01
This standard replaces B.8706-2002 Paper based laminated material for fresh-kecping packaging of liquid food (virtual item color)". Compared with CB18705-2002, this standard has the following major changes: the inner plastic film limit is revised, and the outer plastic film limit is eliminated; the requirements for materials are increased;
GB/T18706--2008
- "Tensile strength" is changed to "breaking force", and the physical performance indicators such as "breaking force", "sealing weakness" and "stiffness" are revised; "oxygen permeability" is divided into two categories: "aluminum" and "other barrier materials"; the requirement for "bonding degree of composite layer plastic film and paper" is cancelled; - - - "material step index" requirement is cancelled; - - - "raw index of polyethylene material" and "maximum amount of adhesive residue" are added; - - - "cross-strength test method" is revised; - - - "breaking force test" test conditions are clearly specified; - - "inner "Sanitary inspection of plastic film" and "Sanitary inspection of solvent residue"; modified the inspection rules; added Appendix A: Appendix A of this standard is a normative appendix. This standard is proposed by the China Packaging Federation. This standard is drafted by the National Packaging Internationalization Technical Committee. The main drafting units of this standard are: Lufeng Packaging (1 Sea) Co., Ltd., Yudao People's Printing Co., Ltd., China Packaging Federation. Participating drafting units of this standard: Gulin Paper (Shangyou) Co., Ltd., Shanghai Tianlongju Packaging Materials Co., Ltd., Tetra Pak China Co., Ltd., Shandong Xinka Technology Packaging Co., Ltd., Sichuan Weizhi International New Materials Co., Ltd. The main drafters of this standard are: Shan Shuliang, Shi Li, Su Zhijie, Cao Ken, Shi Yuanbo, Wu Jianguo, Li Xiaoyang, Hun Gonghai, Xia Weizhi, Xu Chunmin , Li Jianzhen,
The previous versions of the standard replaced by the Ice Standard are: GB18706-2C02.
1 Scope
Paper-based composite materials for liquid food fresh-keeping packaging GE/T18706—2008
This standard specifies the classification, requirements, test methods, inspection rules, marking, packaging, transportation and labeling of paper-based composite materials for liquid food fresh-keeping packaging.
This standard applies to composite materials with base paper as the matrix and compounded with plastics for liquid food fresh-keeping packaging. This standard also applies to composite materials with base paper as the matrix and compounded with plastics, aluminum foil or other isolation materials for hot filling of liquid foods.
2 Normative references
Clause in the following documents The clauses of this standard are constituted by reference in this standard. For all referenced documents with a date, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions are applicable to this standard. G3/T191 Pictorial marking for packaging storage and transportation (GB/T191-2008, IS0780: 1957, M0D) GB/T1038 Test method for air permeability of plastic films (GB/T1038--2000, 1eISO2556:1997) GB/T040.3 Determination of tensile properties of plastics Part 3: Test conditions for thin molds and sheets (G3/11040.3-2006, IS0 527-3: 1995, IDT)
GB/T2679.3 Determination of stiffness of paper and paperboard (GB/T2679.3-1996, eqYISO2493: 1992) CB/T2828.1-2003 Sampling inspection procedure Part 1: Batch inspection plan based on acceptance quality limit (AQL) (GB/T 2828.1: 2003, 1ISO 2859-1 :1999, JIDT) GB/T4789.2-2003 Microbiological examination of food hygiene Determination of total colony count GB/T4789.3-2003 Microbiological examination of food L cattle Determination of human intestinal flora G3/T4789.15-2003 Microbiological examination of food hygiene Bacteria and yeast count GB/T5009.60 Analysis method of industrial standard for ethylene, polystyrene and polystyrene moldings for food packaging CB/T8808 Peel test method for soft composite plastic materials GB9685 Hygienic standard for the use of additives for food containers and packaging materials GIB9687 Hygienic standard for polyethylene molded products for food packaging GB/T[0004-1998 Retort-resistant composite film and bag (cqVJJS7.:707:1995) C-B1_680 Hygienic standard for base paper for composite packaging QB/T2358 Test method for thermal strength of plastic film packaging bags 3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
Liquid food
Liquid food that can flow in a pipeline, including food with particles and shapes in the liquid: 3.2
Fresh packaging Tresh Keeping packaging is to pack and seal sterilized liquid food in a sterilized or unsterilized container, and keep the liquid food fresh and hygienic by low temperature refrigeration method.
GB/T 18706—2008
Jongitudinal sealing
Sealing method in which the outer surface of the material structure contacts the inner surface of the material. 3.4
Sealing strip
Strip of plastic material covering the cross section of the base paper on the inner surface of the overlapping part 4 Classification
According to the material structure, it is divided into two categories: with barrier layer and without barrier layer. Among them, those with barrier layer can be divided into two categories: aluminum foil and other barrier materials.
5 Materials
Composite materials The sanitary index of the original paperboard shall comply with the provisions of GB11680. The sanitary index of other materials shall comply with the relevant national standards. 6 Requirements
Appearance quality
No pollution, no
Printing deletion pattern
Inner and outer surfaces
6.1.4 Bed marks are flat
6.2 Dimensional deviation
Clear, no obvious deformation and color difference, no defect and misprinting. No wrinkles, no holes, no cracks, no bubbles. No rupture:
The dimensional deviation of the material shall comply with the provisions of Table 1.
Table 1 Dimensional deviation of materials
Allowable deviation/mm
6.2.2 The small deviation of the printing position shall comply with the provisions of Table 2. Table 2 Dimensional deviation of printing position
Relative position of indentation line and printed pattern
Relative position of each cut edge and printed pattern
6.2.3 Overprint accuracy
The overprint accuracy of printed pattern is +(1.8mm
6.3 Inner plastic film weight
The inner plastic film weight should not be less than 18 g/m
6.4 Physical and mechanical properties
The mechanical properties of physical spots shall comply with the provisions of Table 3.
Allowable deviation/mm
Tear off/(N/15 mm)
Sealing strength/(N/5 Iw:u)
Inner plastic film puncture strength/(N/15mm) oxygen permeability °/rm/(m2·24h
Yan degree/mV·m
. Applicable to materials with limited circulation thickness.
6.5 Hygiene index
Table 3 Physical and mechanical properties
Container capacity ≤250J.
250ml capacity% capacity 500ml.
Container capacity ≥500mL
Overlap ≥30
Aluminum foil 1.0
Other barrier materials ≥15.0
Container capacity ≤250ml
250mL container capacity ≤500mL
Container Capacity>500ml
6.5.1 The hygienic index of the inner layer polyurethane material shall comply with the provisions of GB9687. The hygienic index of the additives used in the material shall comply with the provisions of GB9685. 6.5.2
6.5.3 The hygienic index of the residual solvent shall comply with the provisions of Table 4. The hygienic index of the residual solvent shall comply with the provisions of Table 4. The microbiological index of the surface of the material in contact with food shall comply with the provisions of Table 5. 6.5.4
Microbiological indicators of the surface of materials in contact with food
Total colony count/(individuals/sm)
Escherichia coli
Pathogens (referring to pathogenic bacteria and pathogenic bacteria)
Test method
7.1 Appearance quality
The materials shall be inspected by the dynamometer method under natural light. 7.2 Dimensional deviation
7.2.1 The small deviation of the size shall be measured by a vernier caliper with an accuracy of not less than 0.1 H1. Request
GB/T 18706—2008
Longitudinal 180
Horizontal 90
Longitudinal ≥200
Horizontal ≥100
Longitudinal 220
Horizontal 120
Longitudinal ≥8.0
Longitudinal ≥12.0
Horizontal 6.0
Vertical 18.0
Number of degrees ≥.0
Unit is grams per square meter
Not allowed
Not allowed to be detected
Not allowed to be detected
7.2.2 The deviation of the overprint viscosity and the slitting position between the indentation line and the printed pattern shall be measured with a 10x graduated microscope and the difference shall be calculated. 3
GB/T18706—2008
7. 3 Quantitative value of inner plastic film
Quantitative value of inner plastic film shall be tested in accordance with the provisions of Appendix A. 7.4 Physical and mechanical properties
7.4.1 Breaking force
Breaking force shall be tested in accordance with the provisions of GB/T1040.3, using type II specimens, with a test width of 15mm, a test speed of 100mm/min±10mr/min, and a clamping distance of [otmt]. When the indentation spacing is less than 100mm, take a flat plate material for testing. 7.4.2 Sealing strength
Sealing strength shall be tested in accordance with the provisions of QB/T2358. The heat sealing conditions of the material shall be provided by the manufacturer according to the material characteristics. When conducting the overlap strength test, it is allowed to seal the middle sealing strip that meets the use conditions at the same time. The test speed is 100mm/min. 7.4.3 Peeling strength of inner plastic film
The peeling strength of inner plastic film shall be tested in accordance with GB/T88C8. 7.4.4 Oxygen permeability
Oxygen permeability shall be tested in accordance with GB/T1038. 7.4.5 Spot
Stiffness shall be tested in accordance with GB/T2679.3. 7.5 Hygienic indicators
7.5.1 Hygienic indicators of inner plastic film
Hygienic indicators of inner plastic film shall be tested in accordance with GB/T5009.60. The material can be folded into a cubic container with the top and the bottom. Only the inner surface in direct contact with food shall be tested.
7.5.2 Solvent residue
Solvent residue shall be tested in accordance with 5.7 of GB/T100C11998. 7.5.3 Microbiological inspection of the surface of material in contact with food 7.5.3.1 Cut the sample along the seam in a sterile room and cut it into the smallest rectangular shape. Measure the volume and make sure it is 0.1. trm and take 109 mL of sterile water, wipe the surface to be tested repeatedly with sterile cotton soaked in sterile water, put the cotton ball back into the sterile water, wipe it, and then test the total colony count, coliform group, pathogenic bacteria and mold according to GB/T4789.2, GB/T4789.3 and GB/4789.15. 7.5.3.2 Calculate the total colony count per square meter based on the sample area. 7.5.3.3 Take 3 parallel samples and calculate the average of the total colony count, accurate to 1 decimal place. 8 Inspection rules
8.1 Batch
One variety, one specification, and a continuous production of no more than 2 million packages is a batch. 8.2 Inspection classification
Product inspection is divided into factory inspection and type inspection. 8.2.1 Factory inspection
The factory inspection items are 6.1 and 5. 2.8.2.2 Type inspection
Type inspection items are all items in Chapter 6. Type inspection should be carried out in any of the following circumstances: a) when the raw material variety, product structure, or production process changes; b) when production is resumed after more than 6 months of suspension; c) when continuous production is completed for 1 year; d) when production is resumed for the first time.
8.3 Sampling
8.3.1 Appearance quality and dimensional deviation shall be carried out in accordance with GB/T2828.1, using a routine inspection secondary sampling plan, special inspection level S-4, and an improved quality limit (AQL) of 2.5, see Table 6. 6
Appearance quality and dimensional deviation sampling plan
35 901--500 000
500 0c1
First,
Sample quantity
Test sample
GB/T18706—2008
Acceptance quality limit (AQL)
Acceptance number Ac
Rejection Re
8.3.2 The quantitative, physical and chemical properties of the inner plastic film are determined in batches. According to the test requirements, sufficient samples for testing are selected for inspection.
8.4 Determination
8.4.1 Determination of sample unit
Each box is a sample unit; one piece is a sample unit. If all the samples are qualified, the sample unit is qualified. 8.4.2 Determination of qualified items
8.4.2.1 Appearance quality deviation is determined according to Table 6. 8.4.2.2 If there are any unqualified items in the quantitative and physical performance inspection of the inner plastic film, double samples should be taken from the original batch of products for re-inspection of the unqualified items. If all the re-inspection results are qualified, the quantitative and physical mechanical properties of the inner plastic film of the batch of products are qualified; if the re-inspection is still unqualified, the batch of products is unqualified.
8.4.2.3 If any of the hygiene indicators are unqualified, the batch of products is unqualified. 8.4.3 Determination of qualified batches
If the products are qualified according to 8.4.2.1, 8.4.2.2 and 8.4.2.3, the batch of products is qualified. 9 Marking, packaging, transportation and storage
9.1 Marking
The marking should comply with the provisions of GB/T191. The outer packaging of the product should be marked with a qualified mark, indicating the product name, specification, quantity, batch number, manufacturer, production date, etc.
9.2 Packaging
The product is packed in cartons, which should be complete, sealed and undamaged. Other packaging methods can be determined by both the supply and demand parties. 9.3 Transportation
The product should be handled with care during transportation to prevent it from being hit by the machine or contacting sharp objects, and to prevent it from being exposed to rain and contaminated. 9.4 Storage
The product should be stored in a clean, dry and ventilated warehouse, away from heat sources and pollution sources. It is strictly forbidden to mix it with toxic and harmful substances. The storage period of the product shall not exceed 1 year from the date of production
GB/T18706—2008
A.1 Inspection Instrument
Appendix A
(Normative Appendix)
Quantitative inspection method for the inner plastic film
A balance with an accuracy of 0.001, a mixture of toluene and alcohol in a ratio of 1:1 (volume ratio), and a constant-irrigation water bath. Test conditions
The temperature of the mixed solution is kept at 6±5 in a constant temperature water bath. A.3
Testing steps
A.3, 1 Cut three samples with an area of ​​50 cm2 or 100 cm2 from the sample with a painting knife. A, 3.? Soak the sample in a mixture of adhesive and ethanol for 10 min, gently separate the inner plastic film, and then place it for 120 min. Weigh the three samples separately on a balance and convert them into grams per square meter (the quantitative value of the inner plastic film). Express the result as the average A.3.3 value of the three samples, with one decimal place. GR/T18706-2008 National Standard of the People's Republic of China Paper-based composite materials for fresh-keeping packaging of liquid food GB/T 18705 20C8 Published by China Standards Press No. 16, Sanguo Hebei Street, Fuxingmenwai, Beijing Postal Code: 10964 Website: spc.nct. en
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