GB/T 18454-2019Laminated bags for aseptic packaging of liquid food (English PDF)

Aseptic packaging

The package which packs the sterilized food in a sterile environment or seals it in a sterilized container to maintain a long shelf life at room temperature without preservatives, meanwhile maximizes the original nutrients and flavors in food.

3.3 Laminated bags for aseptic packaging of liquid food

A laminated bag which is made of a multi-layer film structure and is equipped with a sealing member such as a filling port, for filling the sterilized liquid food.

Note: The laminated bag is for inner packaging and is used together with containers such as paper box, cartons, drums or wooden boxes.

3.4 Sterilization

A confirmed process that leaves the product free of viable microorganisms.

Note 1: During the sterilization process, the nature of microbial inactivation is exponential. The survival of microorganisms on a single product can be expressed by probability. Although this probability can be reduced to very low, it is impossible to fall to zero.

Note 2: Rewrite the definition 3.39 of GB 18280.1-2015.

3.5 Bioburden

The total number of viable microorganisms on a product and/or sterile barrier system and/or therein. [GB 18280.2-2015, definition 3.2.2]

3.6 Sterility assurance level; SAL

The probability of a single living microorganism present on the product unit after sterilization.

Note: SAL represents a magnitude, typically 10^-6 or 10^-3. Although 10^-6 is smaller than 10^-3, it provides a margin greater than 10^-3. [GB 18280.2-2015, definition 3.2.11]

6.4 Physical and mechanical performance

6.4.1 Oxygen permeability

The outer film of aluminum foil bag is tested from the outside to the inside according to the provisions of GB/T 19789. The polyamide bag and polyethylene outer film are tested from the outside to the inside according to the provisions of GB/T 1038. The outer film of the aluminum-plated polyester bag is tested according to GB/T 19789 or GB/T 1038. During arbitration, it shall be carried out in accordance with the provisions of GB/T 19789.

6.4.2 Water vapor permeability

It is tested from the outside to the inside according to GB/T 26253 or GB/T 1037.

The testing temperature is (38 ± 0.5) °C, the relative humidity is (90 ± 2)%. During arbitration, it shall be tested according to GB/T 26253.

6.4.3 Light transmittance

It is tested in accordance with the provisions of GB/T 2410.

6.4.4 Tensile strength and nominal strain of fracture

It is tested according to the provisions of GB/T 1040.1 and GB/T 1040.3. It uses the stripe specimen which has a length of 150 mm, a width of 15 mm, a gauge of (100 ± 1) mm. The tensile speed (no load) of the specimen is (200 ± 20) mm/min.

6.4.5 Peel force

It is tested according to the provisions of the A method of GB/T 8808-1988. The specimen is considered to be qualified when it cannot be peeled off.

6.4.6 Hot seal strength of bag body

It is tested in accordance with QB/T 2358. […]

6.7 Food safety performance

The food safety performance of the outer film, inner lining, filling mouth and seals shall be inspected according to the methods specified in GB 4806.6, GB 4806.7, GB 4806.11, GB 9683, GB 9685 and related standards.

6.8 Sterilization requirements

6.8.1 Radiation sterilization dose

Check the irradiation certificate provided by the irradiation sterilization manufacturer, to determine that the absorbed dose of the product meets the required dosage range. The contents of the irradiation certificate include at least the irradiation sterilization batch number, product name, product batch number, product quantity, required dose range, product's absorbed dose.

6.8.2 Marking of irradiation sterilization state

Visually check the marking of irradiation state.

6.8.3 Microbiological test methods

The sampling method is carried out in accordance with the provisions of GB/T 18706. The inspection shall be carried out in accordance with the provisions of GB 4789.2, GB 4789.3, GB 4789.4, GB 4789.5, GB 4789.10, GB 4789.11, GB 4789.15.

7.1 Group-batch

The products of same variety, the same specification and the same delivery form a batch. The quantity of each batch of products shall not exceed 100000.

7.2 Type of inspection

7.2.1 Exit-factory inspection

7.2.1.1 The items and quantity of samples of the exit-factory inspection are as shown in Table 7. […]