Matupi aPE payipizoyikapo nthawi zambiri zimakhala chifukwa cha mphamvu yosakwanira pa chinthucho, kudzaza zinthu kosakwanira, komanso kapangidwe kazinthu kosakwanira.Madontho nthawi zambiri amawonekera pagawo lokhuthala lomwe limafanana ndi khoma lopyapyala.Mabowo a mpweya amayamba chifukwa cha pulasitiki yosakwanira m'bowo la nkhungu, pulasitiki ya mphete yakunja imazizira ndi kulimba, ndipo pulasitiki yamkati imachepa kuti ipange vacuum.Zambiri zimayamba chifukwa cha zinthu za hygroscopic zomwe sizimawumitsidwa bwino, komanso ma monomers otsalira ndi zinthu zina zomwe zili muzinthuzo.
Kuweruza chifukwa cha pores, m`pofunika kokha kuona ngati thovu za PE zida za chitoliro kuonekera nthawi yomweyo nkhungu kutsegulidwa kapena pambuyo kuzirala.Ngati zimachitika nthawi yomweyo pamene nkhungu imatsegulidwa, nthawi zambiri imakhala vuto lakuthupi, ngati lichitika mutatha kuzizira, ndilo vuto la nkhungu kapena jekeseni.

(1) Vuto la zinthu:

①Zinthu zouma ②Onjezani mafuta ③Chepetsani zinthu zosakhazikika

(2) Mikhalidwe yopangira jekeseni

① kuchuluka kwa jakisoni kosakwanira;②Wonjezerani mphamvu ya jekeseni;③Onjezani nthawi ya jakisoni;④Onjezani nthawi yonse yokakamiza;⑤Onjezani liwiro la jekeseni;⑥Onjezani kuzungulira kwa jakisoni;⑦Kuzungulira kwa jakisoni sikwabwinobwino chifukwa cha opareshoni.

(3) Vuto la kutentha

①Zinthu zotentha kwambiri zimayambitsa kuchepa kwambiri;②Zinthu zozizira kwambiri zimayambitsa kudzaza kosakwanira ndi kupanikizana;③Kutentha kwambiri kwa nkhungu kumapangitsa kuti zinthu zomwe zili pakhoma la nkhungu zisamalimbane msanga;④Kutentha kwambiri kwa nkhungu kumayambitsa kusakwanira kwa nkhungu;⑤Nkhungu ili ndi malo otentha amderalo ⑥Sinthani dongosolo lozizirira.

(4) Vuto la nkhungu;

①Wonjezerani chipata;②Onjezani wothamanga;③Wonjezerani njira yayikulu;④Wonjezerani bowo la nozzle;⑤Kupititsa patsogolo utsi wa nkhungu;⑥Sankhani kuchuluka kwa kudzaza nkhungu;⑦ Pewani kusokonezeka kwa kudzaza kwa nkhungu;⑧Kukonzekera kwa chakudya pachipata Mu gawo lochindikala lazogulitsa;⑨Ngati n'kotheka, chepetsani kusiyana kwa makulidwe a khoma la zopangira chitoliro cha PE;⑩Kuzungulira kwa jakisoni chifukwa cha nkhungu ndikwachilendo.

(5) Mavuto a zida:

① Wonjezerani mphamvu ya pulasitiki ya makina osindikizira;②Pangani jekeseni wamba;

(6) Vuto la kuzizira:

①TheZida za PEamazizidwa motalika kwambiri mu nkhungu kuti asachepetse kuchokera kunja kupita mkati ndikufupikitsa nthawi yozizira ya nkhungu;②Zipaipi za PE zimakhazikika m'madzi otentha.