T/TJWL 001-2018 Food cold chain plastic cold storage bag

Scope

Scope: This standard specifies the terms and definitions, product coding, technical requirements, test methods, inspection rules, packaging, marking, storage, transportation, and product lifespan of plastic cold storage bags used in the food cold chain. This standard applies to plastic cold storage bags composed of phase-change agents and plastic composite films in the food cold chain. Main technical content: 5.1 Raw materials 5.1.1 Phase-change agents: Phase-change agents shall comply with the requirements of T/TJWL 004. 5.1.2 Plastic composite films for packaging: The plastic composite films used for packaging shall be composed of PE and nylon materials that meet the requirements for food packaging safety, with their physical and chemical properties conforming to the provisions of GB/T 28117, and their safety performance meeting the requirements of GB 4806.7. The dimensions of the multilayer co-extruded films shall be determined according to the relevant application scenarios. 5.1.3 Appearance: The outer surface of the plastic cold storage bags used in the food cold chain shall be clean and tidy, without damage or dirt, without leakage, and with a clear liquid inside. The sealing shall be tight, and the dimensions shall meet the requirements. The outer packaging shall be marked clearly and legibly. If the client has special marking requirements, they shall be implemented according to the client's requirements. 5.2 Mechanical and physical properties 5.2.1 Water vapor permeability: The water vapor permeability of the plastic composite films shall be ≤15g/(.24h), meeting the requirements of GB/T 1037. 5.2.2 Tensile strength and elongation at break 5.2.2.1 Tensile strength in the longitudinal direction: ≥18N, meeting the requirements of GB/T 1040.3. 5.2.2.2 Tensile strength in the transverse direction: ≥15N, meeting the requirements of GB/T 1040.3. 5.2.3 Pressure resistance: After the sample undergoes a pressure test with a weight of 61.2kg (600N), it shall not rup

Development Information

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