Many people who go to the street to buy vegetables, have bought bottled canned pickled food or other food, most of these bottles are similar, the bottle cap is also, let's talk about the difference between 16l sealed round pail wholesale.

PP plastic bottle caps have good heat resistance, can be sterilized at temperatures above 100 ° C, and are not deformed at 150 ° C under the condition of no external force. The embrittlement temperature is -35℃, and the embrittlement of the PP plastic bottle cap will occur below -35℃.

PE plastic bottle caps are better at low temperature, the heat resistance is not high, the brittle temperature can generally reach below -50℃, and the minimum can reach -140℃.

Therefore, hot drink bottles use PP caps. The dimensional stability of PP cover is good. PE is cheaper than PP, so it is necessary to use other than PP, generally use PE.

PP plastic bottle caps refer to polypropylene, which is a thermoplastic resin produced by polymerization of propylene. According to the position of methyl group, it can be divided into isotactic polypropylene, atactic polypropylene and syntactic polypropylene.

PE plastic bottle cap refers to polyethylene is a thermoplastic resin produced by polymerization of ethylene. Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature resistance, good chemical stability, resistance to most acid and alkali erosion. Insoluble in general solvents at room temperature, low water absorption, good electrical insulation.

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