PE breathable membrane ndi mtundu watsopano wa zinthu zopanda madzi polima. Kuchokera pakupanga, zofunikira zaumisiri ndizokwera kwambiri kuposa zida zonse zopanda madzi. Nthawi yomweyo, kuchokera pamawonekedwe abwino, nembanemba yopumira imakhalanso ndi magwiridwe antchito kuti zida zina zopanda madzi zilibe mawonekedwe.

Kanema wopumira wa PE ndi chinthu chatsopano chomwe chikukula mwachangu padziko lapansi. Amatchedwa filimu yopuma mpweya. Amagwiritsidwa ntchito kwambiri m'madera osiyanasiyana chifukwa cha makhalidwe ake opuma komanso osasunthika.

1. Mapangidwe a PE breathable membrane
Chigawo chachikulu cha PE breathable nembanemba ndi polyethylene, amene ndi polima zinthu zopangidwa polyethylene. Popanga polyethylene, pang'ono 4-carbon kapena 8-carbon a-olefin amawonjezeredwa ngati comonomer. Komabe, chifukwa kuchuluka kwa a-olefin komwe kumagwiritsidwa ntchito kumakhala kochepa, zambiri za polyethylene zimasungidwabe.

pe breathable film kupanga line

Polyethene ndi waxy woyera translucent zinthu, kusinthasintha ndi zovuta, ndipo akhoza kugawidwa mu low-kachulukidwe polyethylene (LDPE) ndi mkulu kachulukidwe polyethylene (HDPE).

LDPE imapangidwa kuchokera ku ethylene pansi pa kuthamanga kwambiri (98-250mpa), ndi kachulukidwe pafupifupi 0.91-0.92g/m3. HDPE imapangidwa kuchokera ku ethylene polymerized pansi pa 1.0mpa pressure, yokhala ndi kachulukidwe wapamwamba, kulikonse 0.94-0.96g/ m3.

Polyethene ndi yopanda poizoni ndipo ili ndi mphamvu zabwino kwambiri za dielectric. Kutentha kwake kwa kusintha kwa galasi ndi pafupifupi -125 ℃. Polyethene imakhala ndi kukhazikika kwamphamvu kwamankhwala, imatha kukana asidi ndi alkali kutentha kwa firiji, koma ndiyosavuta kuyimitsa ndi kuwala ndi kutentha, komanso imathanso kuwonongeka ndi kuwala kwa ultraviolet. Polyethene ilinso ndi makina abwino kwambiri. Gawo la crystalline limapatsa polyethylene mphamvu zapamwamba, ndipo gawo losakhala la crystalline limapereka kusinthasintha kwabwino.

2. Zinthu za PE breathable membrane
Poyerekeza ndi nembanemba wosapumira, nembanemba zopumira za PE zili ndi izi:
1. Imatha kulowa mkati mwa gasi koma osati madzi kotero kuti ingagwiritsidwe ntchito ngati zinthu zopanda madzi ndi kukana chinyezi;
2. Ikhoza kupititsa patsogolo kayendedwe ka mpweya m'malo omwe amagwiritsa ntchito, zomwe zimapindulitsa pa kupuma kwa khungu;
3. Chifukwa cha mawonekedwe ake opangira zinthu, nembanemba yopumira ya PE ndi yatsopano, yosawononga chilengedwe ndipo siyiipitsa chilengedwe.

3. Njira yotuluka filimu yopumira ya PE
Kuchokera pamalingaliro aukadaulo waukadaulo, pali njira ziwiri zazikulu zopangira ma membrane opumira: njira yopangira filimu yathyathyathya ndipo ina ndiyo njira yowombera filimu, yomwe njira yoponyera imagwiritsidwa ntchito kwambiri.
Njira yayikulu yoyendetsera njira yoponya ndi motere:
PE raw material + porogen-kusakaniza ndi metering-extrusion granulation-extrusion casting-stretching and setting-cooling-trimming-coiling.
Popanga filimu yopumira ya PET, njira yotambasula ya PE Breathable Film Production Line imakhudza kwambiri magwiridwe antchito a kanema.
Panthawi yotambasula, pamene mphamvu yomangirira pakati pa porogen caco3 particles ndi PE polima yozungulira imakhala yochepa kuposa mphamvu ya PE polima chifukwa cha kutambasula, polima idzalekanitsa m'mphepete mwa caco3, zomwe zimapangitsa tinthu ting'onoting'ono. Ma cavities sangalole kuti mamolekyu amadzimadzi adutse, koma mamolekyu a mpweya okha, kotero kuti filimu yotambasulidwayo imakhala ndi ntchito yopanda madzi komanso yopuma.
Kukula kwa patsekeke kumatha kusinthidwa kutengera momwe zinthu zimachitikira monga kukula, mawonekedwe, njira yotambasula, ndi chiŵerengero chotambasula cha particles caco3.
Pamene kutentha kotambasula kuli pamtengo wapatali, pamene chiŵerengero chotambasula chikuwonjezeka, filimu yopuma mpweya wa PE imawonjezeka, ndipo mpweya wa mpweya ukuwonjezeka, pamene ntchito yotambasula imakula kwambiri; monga makulidwe akuwonjezeka, mpweya permeability amachepetsa.

4. Mavuto ndi zotsutsana zomwe zimachitika kawirikawiri popanga filimu yopuma mpweya wa PE.

1 Chophatikizacho sichili cholimba
Mphamvu yophatikizika ya filimu yopumira ya PE ndiyotsika kwambiri kapena zero, zomwe sizingakwaniritse zosowa za makasitomala nkomwe, zomwe zimapangitsa kuti zinthu ziwonongeke. Chifukwa chazomwe zimapangidwira kupanga mafilimu opumira a PE, kutsika pang'ono kwapamtunda, zinthu zoterera kwambiri, komanso kuipitsidwa kwapamtunda kungayambitse zophatikiza zofooka.
Kuthamanga kwapansi pamtunda
Nthawi zonse, kugwedezeka kwa filimu yopuma mpweya wa PE kuti ikhale yowuma kuyenera kukhala pamwamba pa 38 dyn/cm isanayambe kugwiritsidwa ntchito.
Mchitidwewu watsimikizira kuti ngati kukwera kwamphamvu kwa membrane ya PE yopumira ndi yotsika kuposa 38dyn / cm, kungayambitse chodabwitsa champhamvu chochepa. Pansi pa 36dyn / cm, mphamvu yophatikizidwa idzakhala yotsika kwambiri kapena zero.
Nthawi yomweyo, mphamvu zophatikizika zimalumikizananso ndi makulidwe a filimu yopumira ya PE. Ngati ili ndi ma microns ochepera 30, imatha kupangidwa mwanjira ya 36-38dyn/cm. Pamene makulidwe ndi ma microns 30-50, ndipo kukwera kwapamwamba ndi 37dyn / cm, kapangidwe kake kamaganiziridwa. Monga OPP / PE, zotsatira zophatikizana zimatha kukwaniritsa zofunikira. Koma makulidwe ake ndi akulu kuposa ma microns 50, satha kugwiritsidwa ntchito ngati makulidwe ake ndi ochepera 38dyn/cm.
Nawa ma seti angapo a data kuti afotokozere:
Kuchuluka kwamphamvu kwa membrane yopumira ya PE ndikwambiri ikangopangidwa, koma m'kupita kwanthawi, kuchuluka kwamphamvu kwapamtunda kumachepa pang'onopang'ono. Nthawi zambiri, nembanemba yopumira ya PE imatha kusungidwa kwa miyezi 3-6, koma imatha kusungidwa kwa miyezi 3-6 m'chilimwe. Nthawi yosungirako mu nyengo yachinyontho ndi yabwino kuti isapitirire miyezi iwiri.
Mchitidwewu watsimikizira kuti filimu yopuma mpweya wa PE imakhala yogwirizana kwambiri ndi makulidwe ake komanso malo ozungulira. Kukwera kwa chilengedwe kutentha ndi chinyezi, mofulumira kugwedezeka kwapamwamba kumachepa, ndipo filimuyo ikamakula, imachepa mofulumira.
Chifukwa chake, kuyika kwamakanema opumira a PE nthawi zambiri kusapitirire miyezi itatu, makamaka m'nyengo yamvula. Chisamaliro chowonjezereka chiyenera kuperekedwa kwa mpweya wabwino ndi mpweya wosungirako ngati nthawi yosungiramo ndi yaitali kwambiri pazifukwa zina, pamene mukugwiritsanso ntchito, kuwonjezera pa kuyendera mpukutu-ndi-roll, m'pofunika kuganizira mozama ngati mupitirize kugwiritsa ntchito mankhwala ophatikizika malinga ndi cholinga cha mankhwala osakaniza, kuti asatayike.

Mphamvu zowonjezera
Pamene filimu yopuma mpweya wa PE ipangidwa kukhala kanema, zowonjezera zina, monga antistatic agents, slip agents, ndi antistatic agents, nthawi zambiri zimafunika kuwonjezeredwa malinga ndi ntchito yake.
Zowonjezera izi sizimakhazikika pambuyo pakupanga filimu kapena kuphatikizika, makamaka ma slip agents, omwe nthawi zambiri amagwiritsa ntchito erucamide kapena oleamide.
Pali zifukwa ziwiri zochepetsera mphamvu zophatikizika chifukwa cha ma slip agents:
① Kanema wopumira wa PE atayikidwa kwakanthawi kochepa, woterera amasamukira kumtunda wa filimu yopumira ya PE kuti apange wosanjikiza wandiweyani. Chosanjikiza ichi chimalepheretsa kulumikizana kwa zomatira ndi mawonekedwe a filimu yopumira ya PE, zomwe zimapangitsa kuti chomangiracho chilephere kuyanjana ndi filimu yopumira ya PE. PE mamolekyu kukhudzana, koyambirira kophatikizana kumamatira kumakhala kosazama, pamene nthawi yochiritsa ikuwonjezeka, mphamvu yophatikizana simasintha kwambiri, ndipo mphamvu yophatikizana nthawi zonse imakhala yochepa kapena ziro.
Filimu yopumira kwambiri ya PE iyenera kugwiritsidwa ntchito pazofunikira zapadera, ndipo sayenera kusiyidwa kwa nthawi yayitali nthawi zonse. Ngati PE breathable nembanemba ntchito kwa nthawi yaitali pazifukwa zina, ndi bwino kuika PE breathable nembanemba pa kutentha kwa 60-70 ℃ kwa maola oposa 8 pamaso pawiri. Panthawiyi, wothandizira slip adzalephera pang'ono, choncho pitaninso panthawiyi. Laminating alibe vuto la mphamvu zochepa zophatikizika, koma PE breathable nembanemba alibenso mkulu kutsetsereka katundu.
②Kumangirira koyambirira kophatikizana ndikovomerezeka, koma pamene nthawi yochiritsira ikuwonjezeka, mphamvu yophatikizana imakhala yochepa komanso yochepa, ndipo chinthu choyera cha powdery chikuwonekera pakati pa zigawo ziwiri.
Izi ndichifukwa choti zida zapamwamba za PE zimagwiritsidwa ntchito popanga filimu yopumira ya PE. Chifukwa cha kuchuluka kwa filimuyi, kusuntha kwa mamolekyu ozembera mufilimuyi kumakulirakulira pakuchiritsa kutentha kwambiri (40-50 ℃). Mamolekyu ambiri otere amasamukira ku mbali zonse za filimuyo. Pamene nthawi ikuwonjezeka, kuchuluka kwa kusamukira kumtunda kumawonjezeka pang'onopang'ono. Kusamuka kwake kumawononga njira yolumikizirana pakati pa zomatira ndi ma molekyulu a PE ndipo ipanga. Mphamvu yomangira yofooka imawonongeka. Kutalikirana kwa nthawi, mphamvu yowononga imakhala yamphamvu komanso yotsika mphamvu yamagulu.
Pankhaniyi, kuwonjezera kutentha machiritso nthawi zambiri anatengera imathandizira mtanda-kugwirizana liwiro la zomatira kuti liwiro anachita kuposa kusamuka liwiro wa wothandizila kuzembera kubweza kwambiri kuzembera wothandizira mu PE breathable filimu. Zotsatira zoyipa.

Kuwonongeka kwapamtunda
Ma membrane opumira a PE nthawi zambiri samaipitsidwa panthawi yopanga, koma imodzi mwazosavuta kuyiwala: kuyipitsa kwamadzimadzi a dyne.
Ambiri opanga ma membrane a PE amagwiritsa ntchito ma dyne odzikonzekera okha kuti ayese kugwedezeka kwa membrane. Madzi a dyne nthawi zambiri amakhala osakaniza a ethylene glycol monoethyl ether, madzi opanda mtundu komanso owoneka bwino. Ngati idayipitsidwa mwangozi ndi chowongolera chowongolera chifukwa chakuthamanga kwake pang'onopang'ono, filimuyo idzawonongeka ikadutsa pawongoleredwa. Njira yothetsera dyne imalowa pamwamba pa PE breathable membrane ndipo imaphatikizidwa mwamphamvu ndi ma molekyulu a PE. Simalumikizana ndi mamolekyu a binder pambuyo pophatikizana, zomwe zimapangitsa kuti pakhale mphamvu yamagulu a ziro. Mkhalidwewu ndi wovuta kuti tipeze poyang'anira chisanadze.

2 imaphatikiza mfundo yoyera.
Chodabwitsa ichi ndi cholunjika kuti chichitike pa PE milky white film; zambiri, ndi yamkaka woyera filimu anawonjezera ndi kuchuluka kwa woyera masterbatch: anaikira titaniyamu woipa. Chifukwa cha khalidwe losiyana la mtundu masterbatch, tinthu kukula ndi kuuma kwa munali titaniyamu woipa woipa ndi osiyana, chifukwa zosiyanasiyana khalidwe la yamkaka woyera filimu opangidwa pambuyo compounding ndi osiyana pamwamba kuwala. Ngati pamwamba pa filimu yoyera yamkaka imakhala yovuta ndipo ili ndi maenje kuchokera kumbali, zambiri zomwe zimaphatikizidwa ndi filimu yotereyi zimakhala ndi mawanga oyera. Njira zothetsera vutoli ndi izi: Chimodzi ndikuwonjezera kuchuluka kwa zomatira. Chachiwiri ndikusindikizanso wosanjikiza wa inki yoyera. Ziribe kanthu kuti ndi njira iti yomwe ingatengedwe, mtengowo udzawonjezeka, kotero filimu ya PE iyenera kuyang'aniridwa mosamala musanagwiritse ntchito.

3 Pambuyo pophatikizana, mankhwala omalizidwawo amakhala astringent
Chodabwitsa ichi chachitika mwa opanga ambiri. Makina oyika okha azinthu zophatikizika samayenda bwino, kapena chikwama chopangidwa ndizovuta kutsegula.
Kuphatikizika kowuma nthawi zambiri kumagwiritsa ntchito zomatira zamagulu awiri, zomwe ziyenera kuchiritsa pa kutentha kwakukulu mukaphatikizana kuti zikwaniritse mphamvu zapamwamba kwambiri. The slip agent mu PE breathable film idzasintha chifukwa cha kusintha kwa kutentha kwa machiritso. Pa kutentha kwina, wothandizira amatha kusintha kusintha kwa mankhwala ndikutaya mphamvu yake. Kukwera kwanyengo kumapangitsa kusiyana kwakukulu. Kutayika kwakukulu, chomalizacho chimakhala chopweteka ndipo sichingagwiritsidwe ntchito.

Chifukwa chake, kutentha kwa chipinda chochiritsa kuyenera kuyendetsedwa mosamalitsa pafupifupi 40 ℃ ndipo sikungawonjezeke mosasamala. Komanso, malinga ndi ntchito zosiyanasiyana za mankhwala, sankhani zosakaniza zina kuti mupewe astringency ya mankhwala chifukwa cha kusankha kosayenera kwa utomoni.

4 Chisindikizo cha kutentha kosakwanira
Pambuyo polowa pulosesa yomaliza imalowa m'manja mwa kasitomala, nthawi zina kutentha kwa kutentha kwa m'deralo kumakhala kwakukulu kwambiri, kusindikiza kutentha sikuli koyenera, ndi zina zotero, zomwe sizingapulumutsidwe pazovuta kwambiri. Zifukwa zazotsatirazi ndikuphatikizira kuwonongeka kwa corona, kuchuluka kwa zinthu zomwe zimagwiritsidwa ntchito poterera, komanso kuwonjezera zinthu zobwezerezedwanso.

Kuwonongeka kwa Corona
Pamene filimu yopuma mpweya wa PE ikudutsa pamagetsi othamanga kwambiri panthawi yopanga, ikhoza kuyambitsa kuwonongeka pang'ono kwa filimuyo chifukwa cha zifukwa zosiyanasiyana. Chodabwitsa ichi nthawi zambiri chimakhala chotalikirapo, ndipo malowo amakhala okhazikika. Mtengo wazovuta zapamtunda nthawi zambiri umakhala wokwera kwambiri. Chifukwa chivundikiro chotenthetsera chimapanga chinthu chokhala ndi magulu a polar ngati pamwamba, chinthuchi sichikhala ndi kutsekedwa kwa kutentha. Chifukwa chake, idzagwiritsidwa ntchito popanga matumba kapena pakuyika zokha. Kutsekedwa pang'ono kwa kutentha kwachitika. Nembanemba yopumira ya PE imawonjezera chinthu choyezetsa chapawiri pamwamba pazovuta mukamalowa mufakitale kuti mukawonere kuti mupewe izi.

Zambiri zogulira
Chifukwa cha kuchuluka kwa slip agent mu gawo losindikiza kutentha kwa filimu yopumira mpweya wa PE, zipangitsa kuti kuchuluka kwake kugwere pamwamba pa filimu yopumira ya PE kuti ipange wosanjikiza, womwe umalepheretsa kusindikiza kutentha kwa filimu yopumira ya PE.
Izi zitha kuchitika ngati membrane yopuma ya PE yomwe yatha ntchito ikagwiritsidwa ntchito. Chifukwa chake, ndikofunikira kusankha magiredi oyenera a utomoni malinga ndi zomwe makasitomala amafuna ndikuyesera kusagwiritsa ntchito mafilimu akufa pazinthu zotsika kwambiri. Izi zikachitika, tikulimbikitsidwa kugwiritsa ntchito zosungunulira kupukuta chivundikiro chotentha mobwerezabwereza, ndipo zotsatira zake zidzasintha.

Kuonjezera mochulukira kwa zinthu zobwezerezedwanso
Kupulumutsa ndalama, zinthu zina zobwezerezedwanso nthawi zambiri zimawonjezedwa popanga ma membrane a PE. Zida zobwezerezedwanso nthawi zambiri zimasinthidwanso pakatentha kwambiri osachepera kawiri. Pali kuchuluka kwa zonyansa. Nembanembayo ikapangidwanso, ntchito yake yotsekera kutentha imakhala yabwino kwambiri. Kuchepa, kutentha-kusindikiza kutentha nthawi zambiri kumawonjezeka ndi 5-10 ℃. Zoyeserera zikuwonetsa kuti kuchuluka kwa zinthu zotsekera zotsekera kutentha ndi 30%, kutentha kwa filimu yopumira ya PE kumawonjezeka ndi 3-5 ℃. Pamene kuchuluka kwa kuwonjezera ndi 50%, kutentha-kusindikiza kutentha Kwezani kutentha kwa 6-10 ℃ ndipo nthawi zambiri kumafuna kuti wopanga mafilimu asawonjezere zipangizo zobwezerezedwanso muzitsulo zosindikizira kutentha momwe angathere.

5. Ntchito zosiyanasiyana za PE breathable membrane
Chifukwa cha mawonekedwe ake ofewa komanso omasuka komanso owoneka bwino, nembanemba yopumira ya PE imakhala ndi mphamvu zokhazikika komanso zamatali.

Magawo odziwika bwino ndi awa:
● Zofunikira tsiku ndi tsiku: malaya amvula, chivundikiro cha suti, chigoba cha maso, nsalu ya tebulo, kapu yamadzi, nsalu yotchinga, thumba lamadzi, nsalu ya tebulo, ndi zina zotero;
● Zopangira zaukhondo: matewera a mapepala, zopukutira zaukhondo, mikanjo yachipatala-opaleshoni, phukusi lapadera la mankhwala ndi zakudya, ndi zina zotero;
● Zopakira katundu: makompyuta, zipangizo zoziziritsira mpweya, zovundikira zosagwira fumbi, zovundikira galimoto, zopaka zofewa zodzikongoletsera, zikwama zogulira zinthu, zikwama zamphatso, zikwatu zamafayilo, ndi zina zotero;
● Kupaka m’fasho: zikwama zodzikongoletsera, zolembera zapamwamba, malovu a m’mapewa, zovala, zikwama zophera nsomba, zikwama, ndi zikwama, ndi zina zotero.