Hygienic standard for polyethylene terephthalate molded products for food packaging bag materials

Hygienic standard for polyethylene terephthalate molded products for food packaging bag materials 1Subject content and scope of applicationThis standard specifies the hygienic requirements and inspection methods for polyethylene terephthalate molded products.This standard is applicable to the use of polyethylene terephthalate resin for food packaging as raw material, which is produced by injection, drawing and blowing methods.The finished containers and films can be used for beverages, food seasonings, edible oils and fats, and as composite food packaging bags.composite material. 2Reference Standard GB 5009.60Analytical method for hygienic standard of polyethylene, polystyrene and polypropylene molded articles for food packaging GB 13120Method for determination of antimony in polyacid resins and their molded articles for food containers and packaging materials 3Sensory IndexThe appearance should be smooth and transparent, without bubbles, whitish, impurities, stains.The soaking liquid should be colorless, tasteless and odorless. 4Physical and chemical indicatorsPhysical and chemical indicators should meet the requirements of the following table:━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━Project ┃index━━━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━━━━━━Evaporation residue, mg/L┃ 4% acetic acid,60°C, 0.5h ≤┃ 30water,60°C, 0.5h ≤┃ 30 65% ethanol, room temperature, 1h ≤┃30n-hexane, room temperature, 1h ≤┃ 30Potassium permanganate consumption, mg/L┃water,60°C, 0.5h ≤┃ 10heavy metal(byPbcount), mg/L┃ 4% acetic acid,60°C, 0.5h ≤┃ 1.0antimony(bySbcount), mg/L┃ 4% acetic acid,60°C, 0.5h ≤┃ 0.05Decolorization test┃Ethanol┃feminineCold meal oil or colorless grease┃feminineImmersion liquid ┃ Negative━━━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━━━━━━━ 5Testing method 5.1Sampling methodby product quantity1‰Take samples for inspection, and the sample size for small batch production is not less than10pieces, specify the product separatelyName, lot number, sampling date. Half of them are used for inspection, and the other half are kept for two months for arbitration analysis.5.2Immersion conditions 5.2.14% Acetic acid:60±2℃, keep warm0.5h. 5.2.2water:60±2℃, keep warm0.5h. 5.2.3 65% Ethanol: normal temperature(20±5°C),soak1h. 5.2.4n-hexane: normal temperature(20±5°C),soak1h.The above soaking solution is added per square centimeter of contact area.2mL. You can also add soaking liquid to the container until2/3~4/5volume,MinuteThe analysis result is converted to per square centimeter2mLImmersion meter. 5.3Evaporation residueaccording toGB 5009.60Evaporation residue operation. 5.4Potassium permanganate consumptionaccording toGB 5009.60Medium potassium permanganate consumption operation. 5.5heavy metalaccording toGB 5009.60Medium heavy metal operation. 5.6antimonyaccording toGB 13120Analysis of antimony in operation. 5.7Decolorization testaccording toGB 5009.60Medium decolorization test operation.━━━━━━━━━Additional information:This standard is proposed by the Department of Health Supervision of the Ministry of Health.This standard is drafted by Shanghai, Guangxi, and Beijing Food Hygiene Supervision and Inspection Institutes.This standard is interpretable by the Food Hygiene Supervision and Inspection Institute of the Ministry of Health, the technical focal point entrusted by the Ministry of Health.━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━Ministry of Health of the People’s Republic of China 1991-06-07approve1992-03-01implement