Te Whakawhiti Tika i roto i te Tukatuka Tupeka

I roto i te umanga tupeka, ehara ngā whitiki kawe i te mea he wāhanga whakahaere rauemi anake—he mea nui hoki mō te pono o te hua, te whakahaere kounga, me te tutuki i ngā ture. Mai i te tukatuka rau matomato ki te tukatuka tuatahi me te hanga hikareti kua oti, he tino teitei ngā tono mō ngā pūnaha kawe: te ātete ki te puehu, ngā āhuatanga ārai-pūmau, te pumau matū, me te piripono ki ngā paerewa haumaru kai me te pyrolysis.

Mō ngā kaihanga tipu, ngā kaiwhakahaere hokohoko, me ngā kaiwhakauru taputapu e arotake ana i ngā otinga kawe, he mea nui te pātai: He aha te mea e hanga ana i tētahiwhitiki kawe PEte kōwhiringa pai mō ngā mahi a te umanga tupeka, ā, he aha ngā mea me rapu e ngā kaihoko?

A Whitiki kawe PE (polyethylene)he otinga whitiki māmā i hangaia ki te angaanga papanga polyester me te paparanga paninga polyethylene. He tino pai te ātete ki te kakahu, te pumau matū, ngā āhuatanga ārai-pūmau, me te tutuki i ngā paerewa haumaru kai a te FDA—he mea tino pai mō ngā whakaritenga uaua o te umanga tupeka.

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He aha te PE mō te Tupeka? Te Mārama ki te Painga Rauemi

Te Hanganga o ngā Rauemi

He pūhui kirihou wera te PE (polyethylene) e mōhiotia ana mō tōna hanganga ngota ngota ngāwari me te whānui o te whakamahinga. I roto i te hanganga whitiki kawe, ka honoa te PE ki tētahi paparanga whakakaha papanga polyester hei whakarato i te ngāwari me te kaha kume.

Ngā Āhuatanga Rauemi Matua

Te Whakaritenga Pyrolysis

Ko tētahi āhuatanga motuhake o ngā whitiki kawe tupeka ko tōna kaha ki te whakaoti i te whakamātautau pyrolysis—he tātaritanga mura e kore ai e tukuna he matū hauota, he matū halogen rānei. Kāore i rite ki te PVC kirihou, ka mura ngā polyolefins pērā i te PE hei hanga i te hauhā waro me te mamaoa wai, kāore he hua taha kino. He whakaritenga whakahau tēnei mō ngā taputapu ahumahi tupeka.

Ngā Momo Whitiki Kawe PE mō ngā Whakamahinga Tupeka

1. Whitiki PE Mata Maeneene

Ko te whirihoranga paerewa mō te kawe tupeka. Mā te mata maeneene, kāore e piri, ka māmā te tuku i ngā rauemi tupeka, me te whakaiti i te piri o te hua. Matotoru noa: 0.9mm–2.5mm.

Ngā Whakamahinga: Te whakahaere rau matomato, ngā raina tukatuka tuatahi, te kawe whānui.

2. Whitiki Kawe PE Porowhita

He tauira porowhita te āhua o te mata, ka whakanui ake tēnei hoahoa i te waku me te kaha kawe, ka ārai i te paheke i te wā e kawe ana. He mea hanga mai i te rauemi HDPE, he tino whai hua ēnei whitiki mō te whakahaere i te puehu tupeka me ngā rahi hua rerekē.

Ngā Mahi: Te whakarōpū, te whakamaroke, te tapahi, me ngā wāhanga tākai.

3. Whitiki PE Whakawhiti Kōtaha

He hoahoa kōtaha whakarara mō ngā mahi e hiahia ana kia mau tonu, kia whakahaeretia hoki te hua. Matotoru noa: 5.0mm.

Ngā Whakamahinga: Te kawe whakarara, te hiki i te hua.

4. Whitiki PE Tauira Raro

He tauira te mata o raro hei whakapai ake i te kukume i ngā roera taraiwa. Matotoru noa: 5.0mm.

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Ngā Whakatakotoranga Hangarau mā te Taupānga

Ngā Tawhā Matua mō te Kōwhiringa

1. Kōwhiringa Matotoru

• 0.9mm – 1.2mm: Ngā tono māmā, te kawe papatahi
• 2.0mm – 3.0mm: Taumaha mahi-waenga, taumahatanga taurite
• 4.0mm – 5.0mm: He taumaha te mahi, he āhua rite, he nui ngā whakaritenga pumau

2. Te Wātea o te Whānui

Ko te whānui paerewa kei waenga i te 300mm ki te 1000mm, ā, e wātea ana ngā whānui ritenga tae atu ki te 3000mm, i runga i te kaihanga.

3. Ngā Kōtaha Mata

4. Ngā Whakaritenga Ārai-Patū

Ko te nuinga o ngā whitiki PE kounga tupeka he miro kawe hiko kei roto i te paparanga o raro hei whakakore i te utu pūmau. He mea nui tēnei hei ārai i te kohikohinga puehu me te whakarite i te haumaru o te kaiwhakahaere i roto i ngā taiao e ngawari ana te puehu.

Hangarau Ārai-Mīti

Ko tētahi āwangawanga motuhake mō te tukatuka tupeka ko te poke o ngā mite, ka taea te whakararu i te kounga o te hua me ngā paerewa hauora. Ko ngā tikanga hanga matatau e whakauru ana i ngā kaihoko ārai-mite (pēnei i ngā matū isothiazolinone) ki roto i te rauemi PE, i te maimoatanga papanga rānei. Ka aukati ēnei kaihoko i te whakaputa uri o ngā mite, me te pupuri tonu i te tutuki katoa ki ngā ture FDA me te EU REACH. He mea nui tēnei hei whakaaro mā ngā kaihoko e tohu ana i te whitiki kounga tupeka.