GB/T 18706-2025 Paper based laminated material for fresh-keeping packaging of liquid food
1 Scope
This document specifies the appearance quality, dimensional limit deviation, inner plastic film quantification, physical and mechanical properties, and residual solvent content requirements for paper based laminated material for fresh-keeping packaging of liquid food, describes the corresponding test methods, specifies inspection rules, marking, packaging, transport and storage, and provides product classification.
This document is applicable to the production and inspection of laminated materials for the fresh-keeping packaging of liquid food, which are made by combining raw paper with plastic (with or without an aluminum foil layer).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 1038.1-2022 Plastics - Film and sheeting - Determination of gas-transmission rate - Part 1: Differential-pressure methods
GB/T 1038.2-2022 Plastics - Film and sheeting - Determination of gas-transmission rate - Part 2: Equal-pressure methods
GB/T 1040.3 Plastics - Determination of tensile properties - Part 3: Test conditions for films and sheets
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 2918 Plastics - Standard atmospheres for conditioning and testing
GB/T 8808 Test method for peel force of flexible laminated plastics
GB/T 22364-2018 Paper and board - Determination of bending resistance
GB 31604.60 National food safety standard - Food contact materials and articles - Determination of residual solvent content
QB/T 2358 Test methods for heat-sealing strength of plastic film packaging bags
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
liquid food
food that is in a liquid state as a whole under normal conditions
Note: Granular and pasty foods are included.
3.2
fresh-keeping packaging
packaging maintaining the freshness and hygiene of the liquid food that has been sterilized and filled into sterilized or unsterilized containers
3.3
sealing strip
strip-shaped material that serves a sealing function on the inner surface of the longitudinal sealing part
4 Classification
4.1 It is classified into roll form and prefabricated box form according to the supply status.
4.2 It is classified into those with an aluminum foil layer and those without an aluminum foil layer according to the material structure.
5 Technical requirements
5.1 Appearance quality
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Technical requirements
6 Test methods
7 Inspection rules
8 Marking, packaging, transport and storage
Annex A (Normative) Test methods for quantification of inner plastic film
