EVA vs ETPU – Takalma Tsakanin Materials

Aiki na Shoe Midsole

An raba takalman wasanni na yau da kullum zuwa sassa uku: babba, tsakiya, da waje. Tsakanin tsakiya yana ba da kwanciyar hankali da sake dawowa, yana ɗaukar tasirin da aka haifar yayin motsa jiki, yana ba da kariya, da kuma jin dadi da ƙafar ƙafa. Ana iya cewa tsaka-tsaki shine ruhun wasanni masu guje-guje da takalma, kuma kayan aiki da fasaha na kumfa na tsaka-tsakin su ne alamun da ke bambanta fasahar fasaha na manyan kayayyaki.

Mene ne bambanci tsakanin EVA da kuma ETPU, kayan biyu da ake amfani da su don tsaka-tsakin takalma?

EVA: Kashin bayan Kayan Takalmi

Sunan sunadarai na EVA Ethylene Vinyl Acetate Copolymer, wanda aka haɗa shi da ethylene da vinyl acetate. Gabaɗaya, abun ciki na vinyl acetate (VA) yana tsakanin 5% da 40%. Idan aka kwatanta da polyethylene (PE), EVA yana gabatar da monomer na vinyl acetate a cikin sarkar kwayoyin halitta, wanda ke rage girman crystallinity kuma yana inganta ƙarfi, juriya mai tasiri, dacewa mai filler, da aikin rufewar zafi. Sabili da haka, ana amfani dashi sosai a cikin kayan takalma mai kumfa, fina-finai na greenhouse masu aiki, kayan kwalliyar marufi, adhesives mai zafi, wayoyi da igiyoyi, da kayan wasan yara. Musamman a masana'antar takalma, EVA an yi amfani da shi zuwa ƙafar ƙafa da kayan ciki na tsaka-tsaki-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsalle-tsa-tsa-tsa-karshen takalma tafiya.

EVA Ayyuka da Farashin

Dangane da fasaha, EVA gabaɗaya ana yin kumfa a cikin sinadarai a cikin masana'antar takalmi. EVA Ana sanya granules a cikin mold sa'an nan kuma an fuskanci babban zafin jiki da kuma matsa lamba ga kumfa. Kumfa EVA na iya sa tafin tafi da haske, da kuma EVA guduro tare da wani elasticity yana ba tafin tafin kafa aikin kwantar da hankali, yin EVA kayan takalma masu kumfa masu dacewa da mafi yawan takalma na yau da kullum da takalman gudu. The rebound elasticity na kumfa EVA Ana iya ƙara yawan zuwa 50-55%, ko ma mafi girma. 

EVA samfuran kumfa da aka haɗe ana amfani da su azaman tafin kafa da kayan ciki don tsakiyar-zuwa-ƙarshen-ƙarshen takalman yawon shakatawa, takalman tafiya, silifa, da sandals. Saboda fa'idar farashin EVA kayan kumfa, zai kasance babban zaɓi na kayan aiki don takalman wasanni na wasanni na dogon lokaci a nan gaba.

ETPU: Kayan Takalmi Mai Kumfa na Juyin Juya Hali

Muhimman Fa'idodin TPU

TPU, gajeru don polyurethane mai zafi da zafi elastomer, wani yanki ne na copolymer wanda ya ƙunshi diisocyanate, sarkar sarkar, da polyol. Sashi mai laushi da ke kunshe da polyol yana nuna sassauci da taurin kai, yayin da diisocyanate yana aiki a matsayin sashi mai wuyar gaske, yana ba da taurin kayan da rigidity. Bayan daɗaɗɗen yanki ya yi crystalliizes azaman wurin haɗin giciye na zahiri, TPU yana nuna babban elasticity. Don haka, TPU yana da fa'idodi masu mahimmanci kamar ƙarfin ƙarfi mai ƙarfi, babban elongation a hutu, da ƙarancin naƙasa na dindindin na dogon lokaci.

ETPU Mafi Kyawawan Ayyuka

Dangane da tsarin masana'antu, ana amfani da kumfa ta jiki don tsaka-tsakin ETPU, wanda ya dace da muhalli kuma ana iya sake yin amfani da shi ba tare da wani wari ba idan aka kwatanta da kumfa na sinadaran EVA. Bayan gyare-gyaren, yana gabatar da tsari mai kama da popcorn tare da kyakkyawan juriya da farfadowa da nakasawa, da kuma juriya da aikin hana zamewa da kyau fiye da na gargajiya. EVA kayan aiki. Mai kumfa TPU, ko ETPU, yana da darajar sake dawowa har zuwa 60%, wanda ya fi na EVA. Wannan yana nufin cewa lokacin da takalmin ya faɗo ƙasa kuma ya koma baya, tafin kafa ya sake komawa da karfi mai girma, yadda ya kamata ya rage gajiyar tsoka da rage yawan rawar jiki, yana ba ku damar yin nisa tare da cikakken iko.

ETPU price

Duk da haka, ETPU yafi tsada fiye da EVA, wanda ya hana wasu masana'antun, kuma akwai wasu matsaloli a aiwatar da ƙirƙira. Amma waɗannan cikas ne na ɗan lokaci. Yawancin masana'antun sun yi ƙoƙarin kawowa ETPU kayan zuwa faffadan aikace-aikace na ƙasa. Misali, aikace-aikacen kasuwanci mai nasara shine ETPU filastik hanya. A cikin 'yan shekarun nan, ƙarin aikace-aikacen kasuwanci sun bayyana a fagen hangen nesa, kamar ETPU kujerun keke, fakitin kariya na wasanni, ETPU tabarmar rarrafe na yara, kwalliyar hular keke, kujerun mota, da dai sauransu.

overall, ETPU yafi tsada fiye da EVA kuma yana da wuya a rabu da tasirin alamar Adidas. Duk da haka, ETPU yafi kyau fiye da EVA dangane da iya sake dawowa, dawo da nakasu, juriya, da aikin hana zamewa. Mafi mahimmanci, ETPU ya dace da yanayin kare muhallin kore. Sabili da haka, lokacin zabar kayan don tsaka-tsakin takalma masu kyau, abubuwa irin su bayyanar, laushi, da ta'aziyya na takalma dole ne a yi la'akari da su, kuma farashin takalma yana da fahimta.

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