Polythene ndi imodzi mwa mapulasitiki otchuka kwambiri padziko lonse lapansi. Ndi polima yosinthika yoyenera kugwiritsidwa ntchito m'njira zosiyanasiyana, kuyambira mafilimu oteteza chinyezi olemera kuti agwiritsidwe ntchito pakupanga zinthu zatsopano mpaka matumba ndi mafilimu opepuka komanso osinthasintha.

Mitundu iwiri ikuluikulu ya PE imagwiritsidwa ntchito mu gawo la filimu ndi ma phukusi osinthasintha - LDPE (low density), yomwe nthawi zambiri imagwiritsidwa ntchito pa ma pallet ndi mafilimu olemera monga matumba ndi matumba okhalitsa, ma tunnel a polyethylene, mafilimu oteteza, matumba azakudya, ndi zina zotero.HDPE (kuchuluka kwambiri)Pa ma tote ambiri opyapyala, matumba atsopano a zipatso, ndi mabotolo ndi zipewa zina.

Pali mitundu ina ya mitundu iwiri ikuluikulu iyi. Zogulitsa zonse zimakhala ndi mphamvu zabwino zotchingira nthunzi kapena chinyezi ndipo sizimakhudzidwa ndi mankhwala.

Mwa kusintha mapangidwe ndi mafotokozedwe a polyethylene, opanga/okonza amatha kusintha mphamvu ndi kukana kung'ambika; kumveka bwino ndi kumva; kusinthasintha, mawonekedwe, ndi kuthekera kopaka/kupopera/kusindikiza. PE ikhoza kubwezeretsedwanso, ndipo matumba ambiri a zinyalala, mafilimu a zaulimi, ndi zinthu zomwe zimakhala nthawi yayitali monga mabenchi a paki, maboladi, ndi mabokosi a zinyalala amagwiritsa ntchito polyethylene yobwezeretsedwanso. Chifukwa cha kuchuluka kwake kwa kalori,Zopereka za PEkubwezeretsa mphamvu bwino kwambiri kudzera mu kuyatsa koyera.

Mukufuna kugula HDPE?

ntchito
Migolo ya mankhwala, mitsuko ya pulasitiki, mabotolo agalasi, zoseweretsa, ziwiya za pikiniki, ziwiya zapakhomo ndi kukhitchini, zotetezera mawaya, matumba a tote, zipangizo zopakira chakudya.

khalidwe
Yosinthasintha, yowala/yopanda sera, yolimba nyengo, yolimba kutentha kochepa (mpaka -60'C), yosavuta kuikonza ndi njira zambiri, yotsika mtengo, yolimba ndi mankhwala.

makhalidwe enieni
Mphamvu yokoka 0.20 – 0.40 N/mm²
Mphamvu yogwira ntchito popanda kusweka Kj/m²
Kuchuluka kwa Kutentha kwa 100 - 220 x 10-6
Kutentha kwakukulu kogwiritsa ntchito mosalekeza 65 oC
Kuchulukana 0.944 – 0.965 g/cm3

kukana mankhwala
Sungunulani asidi****
Maziko osungunuka ****
Mafuta ** Osinthika
Ma hydrocarbons a Aliphatic *
Mafuta onunkhira *
Ma hydrocarbon okhala ndi halogenated *
Mowa****

Wotsutsa * Wosauka ** Wapakati *** Wabwino **** Wabwino Kwambiri

Maphunziro a milandu omwe alipo pano

Ziwiya za m'munda zopangidwa ndi polyethylene yolemera kwambiri. Mtengo wotsika, kulimba kwambiri komanso kusavuta kupanga zinthu zophwanyika zimapangitsa kuti zinthuzi zikhale zosankha zachilengedwe za mipando ya m'munda.

Botolo la pulasitiki la HDPE
Mabotolo apulasitiki okhala ndi kuchuluka kwakukulu kwa polyethylene (HDPE) ndi njira yotchuka yopangira mkaka ndi madzi atsopano. Mwachitsanzo, ku UK, mabotolo okwana 4 biliyoni odyetsera a HDPE amapangidwa ndikugulidwa chaka chilichonse.

HDPE imapereka maubwino ambiri kwa opanga, ogulitsa ndi ogula.

Ubwino wa mabotolo a HDPE
Amabwezerezedwanso: Mabotolo a HDPE amatha kubwezerezedwanso 100%, kotero zinthuzo zitha kugwiritsidwanso ntchito

Zosatha: HDPE imapereka mwayi wophatikizanso zinthu zobwezerezedwanso mu unyolo woperekera

Kupepuka Kosavuta: Mabotolo a HDPE Amapereka Mwayi Wofunika Kwambiri Wopepuka

Yosinthika kwambiri: botolo lokhalo la pulasitiki lomwe lingagwiritsidwe ntchito ngati gawo limodzi la mkaka wophikidwa, kapena ngati botolo la UHT kapena botolo lopangidwa ndi chotchinga cha mkaka chopanda tizilombo toyambitsa matenda

Kugwiritsa ntchito mosavuta: Mtundu wokhawo wa phukusi womwe umalola zogwirira zophatikizika ndi mabowo othira kuti zigwire bwino ndikutsanulira

Otetezeka: Mtundu wokhawo wa phukusi womwe ungakhale ndi chisindikizo chakunja chomwe chikuwoneka kuti chatsekedwa kapena chisindikizo cha kutentha cholowetsedwa kuti chiteteze kutuluka kwa madzi, kusunga zinthu zatsopano, komanso kusonyeza umboni wa kusinthidwa kwa madzi.

Zamalonda: Mabotolo a HDPE amapereka mwayi wotsatsa malonda, monga kusindikiza mwachindunji pa chinthucho, kusindikiza mwachindunji pa chikwama kapena chizindikiro, komanso kuthekera kosintha mawonekedwe ake kuti awonekere bwino pashelufu.

Zatsopano: Kutha kupititsa patsogolo malire ndikupeza zinthu zatsopano pogwiritsa ntchito zida zopangira zinthu zowononga.

mfundo zokhudza chilengedwe
Mabotolo a ana a HDPE ndi amodzi mwa ma phukusi obwezerezedwanso kwambiri ku UK, ndipo deta yochokera ku Recoup ikuwonetsa kuti pafupifupi 79% ya mabotolo a ana a HDPE amabwezerezedwanso.
Pa avareji,Mabotolo a HDPEku UK tsopano ndi opepuka ndi 15% kuposa momwe analili zaka zitatu zapitazo

Komabe, mapangidwe atsopano monga botolo la Infini lomwe lapambana mphoto likutanthauza kuti tsopano n'zotheka kuchepetsa kulemera kwa mabotolo wamba ndi 25% (kutengera kukula kwake).

Pa avareji, mabotolo a HDPE ku UK ali ndi zinthu zobwezerezedwanso mpaka 15%.

Komabe, kupita patsogolo kwa ukadaulo ndi mapangidwe atsopano a zinthu kukutanthauza kuti zinthu zatsopano zatheka. Mwachitsanzo, mu 2013, Nampak adawonjezera 30 peresenti ya HDPE yobwezeretsedwanso m'mabotolo ake a mkaka a Infini, dziko loyamba padziko lonse lapansi—zaka ziwiri patsogolo pa cholinga cha makampani.