Plastic containers, also known as hollow blow molded containers, are processed using a hollow molding method. There are open plastic buckets, cans, and closed plastic buckets, cans. Open plastic buckets, cans are mainly used to hold solid chemicals, food, drugs, etc; Closed plastic barrels and cans are mainly used to hold liquid substances. It has the characteristics of light weight, non fragility, corrosion resistance, and recyclability. Its maximum capacity is 450L, and the maximum weight of loaded goods is 400kg Quality requirements: For plastic containers used as transportation packaging for export commodities, they shall be inspected in accordance with SN/T0271-93 "Inspection Regulations for Plastic Containers for Export Commodity Transportation Packaging", and shall be executed in accordance with GB/T13508-92 "Polyethylene Blown Plastic Barrels". (1) Appearance: The wall thickness ratio of the symmetrical part of the barrel body should not be greater than 2:1, without sand holes or poor plasticization. The outer wall and mouth should be flat and smooth, with no more than 2 bubbles with a diameter of no more than 2mm. The length of black spots and impurities should not exceed 4mm. The barrel opening parts should overlap tightly and have good interchangeability. (2) Performance test: Open plastic containers must undergo vertical impact drop test, stacking test, and sealing test. Closed plastic containers must undergo vertical impact drop test, stacking test, airtightness test, and hydraulic test. Plastic containers with installed handles and integral handles also need to undergo suspension tests. ① Vertical impact drop test: The sample is tested at -18 ℃. Drop height: If water is used as a substitute and the density of the intended product is not greater than 1.2, it is 0.8m; The drop height of the intended product with a density greater than 1.2 is 0.67m × Density. Please refer to SN/T0271 "Inspection Regulations for Plastic Containers for Export Commodity Transportation Packaging" for the dropped part. ② Stacking test: The test temperature is 40 ℃, and the stacking time is 7 days. Test items: 1. Basic performance: size, melting point, volume, tensile strength, elongation at break, water absorption, transmittance, water vapor transmittance, oxygen transmittance, dart impact, puncture strength, impact strength, compression performance, drop test, stacking test, etc; 2. Combustion performance: oxygen index, horizontal combustion, vertical combustion, etc; 3. Thermal performance: thermal stability, oven experiment, longitudinal shrinkage, glass transition temperature, etc; 4. Electrical performance: surface resistivity, volume resistivity, electrostatic shielding performance, anti-static performance, etc; 5. Aging performance: hot air aging, UV aging, surface pollution resistance, service life, etc; 6. Environmental protection: Resistance to mold, ROHs, formaldehyde, heavy metals, hygiene, etc. Author: Knowledge of Baijian and testing https://www.bilibili.com/read/cv18200562/ Source: Bilibili