EVA vs ETPU -Nsapato Midsole Zida

Ntchito ya Nsapato Midsole

Nsapato zamasewera wamba zimagawidwa m'magawo atatu: chapamwamba, midsole, ndi outsole. Midsole imathandizira kukhazikika komanso kubwezeretsanso, imatenga zomwe zimachitika panthawi yochita masewera olimbitsa thupi, imapereka chitetezo, komanso kumveka bwino kwa phazi. Tikhoza kunena kuti midsole ndi moyo wa nsapato zothamanga zamasewera, ndipo teknoloji yakuthupi ndi thovu ya midsole ndi zizindikiro zomwe zimasiyanitsa teknoloji yaikulu ya malonda akuluakulu.

Kodi pali kusiyana kotani pakati EVA ndi ETPU, zida ziwiri zomwe zimagwiritsidwa ntchito popanga nsapato za midsoles?

EVA: Msana wa Zida za Nsapato

Dzina la mankhwala a EVA ndi Ethylene Vinyl Acetate Copolymer, yomwe imapangidwa ndi ethylene ndi vinyl acetate. Nthawi zambiri, zomwe zili mu vinyl acetate (VA) zili pakati pa 5% ndi 40%. Poyerekeza ndi polyethylene (PE), EVA imayambitsa vinyl acetate monomer mu unyolo wa mamolekyulu, omwe amachepetsa crystallinity yayikulu ndikuwongolera kulimba, kukana kukhudzidwa, kugwirizana kwa zodzaza, ndi ntchito yosindikiza kutentha. Choncho, chimagwiritsidwa ntchito thovu zipangizo nsapato, mafilimu zinchito wowonjezera kutentha, zisamere nkhungu ma CD, zomatira otentha kusungunula, mawaya ndi zingwe, ndi zidole. Makamaka makampani opanga nsapato, EVA amagwiritsidwa ntchito pazitsulo ndi zipangizo zamkati za nsapato zapakatikati mpaka zotsika kwambiri, nsapato zoyendayenda, slippers, ndi nsapato.

EVA Magwiridwe ndi Mtengo

Potengera ukadaulo, EVA nthawi zambiri amakhala ndi thovu mu nkhungu m'makampani opanga nsapato. EVA ma granules amaikidwa mu nkhungu ndiyeno amatenthedwa ndi kutentha kwambiri komanso kuthamanga kwambiri kuti apange thovu. Kuchita thovu EVA akhoza kupanga chopepuka chopepuka, ndi EVA utomoni wokhala ndi elasticity umapatsa chokhacho ntchito yoyenera yopumira, kupanga EVA zida za nsapato zokhala ndi thovu zoyenera nsapato wamba komanso nsapato zothamanga. The rebound elasticity wa thovu EVA zitha kuchulukitsidwa mpaka 50-55%, kapena kupitilira apo. 

EVA Zosakaniza zopangidwa ndi thovu zimagwiritsidwa ntchito kwambiri ngati zida zokhazokha komanso zamkati za nsapato zapakatikati mpaka zapamwamba zapaulendo, nsapato zoyenda, ma slippers, ndi nsapato. Chifukwa mtengo mwayi wa EVA zida zokhala ndi thovu, ikhalabe chisankho chachikulu cha nsapato zamasewera ambiri kwa nthawi yayitali mtsogolo.

ETPU: Zida Zansapato za Revolutionary Foamed

Ubwino Wofunikira wa TPU

TPU, yochepa thermoplastic polyurethane elastomer, ndi gawo la copolymer lopangidwa ndi diisocyanate, chain extender, ndi polyol. Gawo lofewa lomwe limapangidwa ndi polyol likuwonetsa kusinthasintha komanso kulimba, pomwe diisocyanate imagwira ntchito ngati gawo lolimba, kupereka kuuma kwazinthu komanso kulimba. Pambuyo pa gawo lolimba likuwonekera ngati malo olumikizirana, TPU amawonetsa elasticity yapamwamba. Chifukwa chake, TPU ali ndi ubwino waukulu monga kulimba kwamphamvu kwambiri, kutalika kwakukulu pa nthawi yopuma, ndi kutsika kwa nthawi yaitali kutsika kwa nthawi yayitali.

ETPU Kuchita Kwabwino Kwambiri

Pankhani ya kupanga, thovu lakuthupi limagwiritsidwa ntchito pakatikati pa ETPU, amene ndi wochezeka zachilengedwe ndi recyclable popanda fungo lililonse poyerekeza ndi thovu mankhwala a EVA. Pambuyo pakuwumba, imakhala ndi mawonekedwe ngati ma popcorn omwe amatha kulimba mtima komanso kuchira bwino, komanso kukana kuvala komanso kuchita bwino kwambiri kuposa kale. EVA zipangizo. The thovu TPUkapena ETPU, ili ndi mtengo wobwereranso mpaka 60%, wokwera kwambiri kuposa wa EVA. Izi zikutanthauza kuti nsapato ikagunda pansi ndikubwereranso, yokhayo imabwereranso ndi mphamvu yaikulu, kuchepetsa kutopa kwa minofu ndi kuchepetsa kugwedezeka kwa minofu, kukulolani kuti muthamangire kutali ndi mphamvu zonse.

ETPU Price

Komabe, ETPU ndi okwera mtengo kuposa EVA, zomwe zalepheretsa opanga ena, ndipo pali zovuta zina pakupanga zatsopano. Koma izi ndi zopinga zosakhalitsa. Opanga ambiri ayesa kubweretsa ETPU zipangizo zosiyanasiyana kunsi kwa mtsinje ntchito. Mwachitsanzo, ntchito bwino malonda ndi ETPU nyimbo ya pulasitiki. M'zaka zaposachedwa, ntchito zambiri zamalonda zawonekera m'munda wathu wamasomphenya, monga ETPU mipando ya njinga, zotetezera masewera, ETPU mphasa zokwawa za ana, padding chisoti cha njinga, zopalasa mipando yagalimoto, ndi zina zotero.

Cacikulu, ETPU ndi okwera mtengo kuposa EVA ndipo ndizovuta kupatukana ndi Adidas label effect. Komabe, ETPU ndizabwino kuposa EVA ponena za kuthekera kwa rebound, kuchira kosinthika, kukana kuvala, komanso kuchitapo kanthu kotsutsa. Chofunika kwambiri, ETPU zimagwirizana ndi chikhalidwe cha chitetezo cha chilengedwe chobiriwira. Choncho, posankha zipangizo za midsoles yabwino ya nsapato, zinthu monga maonekedwe, zofewa, ndi chitonthozo cha nsapato ziyenera kuganiziridwanso, ndipo mtengo wapamwamba wa nsapato umamveka.

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