Cov khoom siv rau tshuab moulding qib hollow yas ntim khoom yog qhov siab-siab high-ntom polyethylene, tseem hu ua HDPE, uas tsis yog-tus ncej huab cua thermoplastic resin nrog crystallinity siab. Cov tsos ntawm tus thawj HDPE yog milky dawb, thiab daim ntu yog translucent rau qee yam. PE muaj kev tiv taus zoo rau cov tshuaj lom neeg feem ntau hauv tsev thiab kev lag luam. Qee hom tshuaj muaj peev xwm ua rau muaj tshuaj lom neeg hauv lub cev, xws li corrosive oxidizers (concentrated nitric acid), cov roj ntsha uas muaj ntxhiab hydrocarbons (xylene) thiab halogenated hydrocarbons (carbon tetrachloride). Cov kua polymer tsis-hygroscopic thiab muaj dej tsis zoo vapor tsis kam thiab tuaj yeem siv rau cov hom phiaj ntim. HDPE muaj cov khoom hluav taws xob zoo, tshwj xeeb tshaj yog lub zog dielectric lub zog ntawm qhov rwb thaiv tsev, ua rau nws haum rau cov xov hlau thiab kab txuas. Nruab nrab mus rau qib siab molecular hnyav muaj qhov cuam tshuam zoo tshaj, txawm tias nyob hauv chav tsev kub thiab txawm tias qhov kub qis ntawm -40F. Cov yam ntxwv tshwj xeeb ntawm ntau qib ntawm HDPE yog qhov sib xyaw kom haum ntawm plaub qhov sib txawv: ntom, molecular phaus, molecular phaus faib thiab ntxiv rau.
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