GB/T 18706-2025Paper based laminated material for fresh-keeping packaging of liquid food (English PDF)

1 Scope

GB/T 18706-2025 is the Chinese national standard on paper based laminated material for fresh-keeping packaging of liquid food, in the field of packaging and distribution of goods. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 30 June 2025 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 1 January 2026. Classification: ICS 55.040, CCS A82. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This document specifies the requirements for appearance quality, dimensional limit deviations, basis weight of inner plastic film, physical and mechanical properties, and solvent residue of paper-based laminated materials for fresh-keeping packaging of liquid food. It describes the corresponding test methods, specifies inspection rules, marking, packaging, transportation, and storage, and provides product classification. This document applies to the production and inspection of laminated materials for fresh- keeping packaging of liquid food, made from paper as the base material and laminated 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 Graphical symbols marking for handling and storage of packages

GB/T 1038.1-2022 Plastics - Film and sheeting - Determination of gas-transmission rate - Part

3 Terms and definitions

For the purpose of this document, the following terms and definitions apply.

3.1 liquid food Food that is in a liquid state under normal conditions. NOTE. It includes foods with granules and pastes.

3.2 fresh-keeping packaging Packaging that holds sterilized liquid food in sterilized or unsterilized containers to maintain the freshness and hygiene of the liquid food.

3.3 sealing strip A strip of material that provides a seal on the inner surface of the longitudinal sealing section.

4 Classification

4.1 According to supply status, it is classified into roll form and preformed box form.

4.2 According to material structure, it is classified into those with aluminum foil layer and those without aluminum foil layer.

6 Test methods

6.1 Standard atmosphere for specimen conditioning and testing Unless otherwise specified, tests for physical and mechanical properties shall be performed in accordance with GB/T 2918, with conditioning at a temperature of 23 °C ± 2 °C and a relative humidity of 50 % ± 10 % for at least 4 h, and the tests shall be performed in this atmosphere.

6.2 Appearance quality Visual inspection under natural light.