Lub hauv paus tseem ceeb ntawm kev ntsuas khob xws li polyethylene (PE) thiab polypropylene (PP). Ob cov ntaub ntawv muaj tshuaj lom neeg zoo heev thiab hnav tsis kam thiab siv dav hauv cov zaub mov ntim thiab ntim thau thawv. Polyethylene xabiling khob yog lub teeb pwm loj thiab pheej yig, haum rau kev ntsuas kev ntsuas dav dav; Polypropylene xabiling khob yog tiv taus kub siab thiab haum rau ib puag ncig kub xws li micringave ncu, tab sis yog kim dua.
Tsis tas li ntawd, kuaj cov khob ntsuas cua yog tseem ua los ntawm cov iav thiab polytetrafluoroethylene (pfa). Iav Xab khob muaj siab transparency thiab ntshiab cov nplai, cuam tshuam los ntawm cov muaj zog acids thiab alkalis thiab siab thiab qis kub; PFA ntsuas khob muaj cov tshuaj lom neeg muaj zog dua, tuaj yeem tiv taus cov muaj zog acids thiab alkalis thiab siab thiab qis rau kev sim ib puag ncig kev sim.
