Характеристики различных материалов пластиковой сумки контейнера?

сумка-контейнер

Использование FIBC в нашей жизни очень распространено. We use plastic мешки-контейнеры according to the production of different materials
Это можно разделить на два вида. Один - материал PE, Другой - материал PP. To know these two materials have good low-temperature resistance and good chemical stability.
After that made of plastic containers, which of these two materials better performance?

The сумка-контейнер made of PE is easy to aging and requires careful maintenance; PP is a semi-crystalline material; it is harder than PE and has a higher melting point. When the homopolymer type of PP temperature is higher than 0℃, the plastic сумка-контейнер is very brittle. Thus, many commercial PP material is a random copolymer having 1-4% ethylene or higher ethylene content ratio.Copolymer.PP type polymer type has low heat distortion temperature, low transparency, low gloss, and low rigidity, but has a stronger impact strength. With the increase of ethylene content, the strength of PP increases. Bulk bags made of PP material are more expensive.