Zomwe zimadziwika pamsika kuti "pepala la Dupont" ndi mtundu wa polyethylene yolemera kwambiri yotchedwa Tyvek, yomwe mu Chitchaina imatchedwa Twiken.

Tyvek adapangidwa m'ma 1950 ndipo adayamba kupanga malonda mzaka za 1960. Tyvek ndikugwiritsa ntchito ukadaulo wa flash, ndi polima atasungunuka motentha ndikupanga ulusi wopitilira ndikuwakankhira mu polyethylene yayikulu, ukadaulo wapadera wa Tyvek umaphatikizira mapepala Kanema, nsalu ndi nsalu, yopanda madzi, yopumira, yopepuka, yolimba, yosagwedezeka, yolimba, yowunikira kwambiri, ikufalikira, kukana kwa UV, kapangidwe kake ndi kupangika kwake ndipadera, kuteteza zachilengedwe kumatha kukonzedwanso, ndipo kumagwirizana kwambiri ndi mitundu yonse yaukadaulo ndi digito makina osindikizira, oyenera mitundu yosiyanasiyana yaukadaulo.

Tyvek imagwiritsidwa ntchito kwambiri, monga madzi osapumira komanso zinthu zopumira pakhoma lakunja ndi padenga, zotsekemera zopangira zida zamankhwala, komanso zovala zoteteza m'makampani m'munda wazodzitchinjiriza. M'zaka zaposachedwa, Tyvek imadziwikanso pamapangidwe aboma osiyanasiyana komanso zopanga zinthu , monga zinthu zapanyumba zamafashoni, mafashoni, zaluso, zikhalidwe ndi zopanga, zoteteza chilengedwe ndi mapangidwe opanga, ndi zina. Tyvek ndi yoyera yoyera ndipo ili ndi magawo awiri osiyana: cholimba monga pepala ndi zofewa monga nsalu.