Filimu yoyika pulasitikindi chimodzi mwa zinthu zazikulu zosinthika ma CD. Pali mitundu yambiri ya filimu yopangira pulasitiki yokhala ndi mawonekedwe osiyanasiyana, ndipo ntchito zawo zimasiyana malinga ndi mawonekedwe a filimu yolongedza.
Filimu yolongedza imakhala ndi kulimba kwabwino, kukana chinyezi, ndi ntchito yosindikiza kutentha, ndipo imagwiritsidwa ntchito kwambiri: Kanema wapaketi wa PVDC ndi woyenera kunyamula chakudya ndipo amatha kukhala mwatsopano kwa nthawi yayitali; Ndipo filimu yosungunuka ya PVA yosungunuka m'madzi ingagwiritsidwe ntchito popanda kutsegula ndikuyika mwachindunji m'madzi; Kanema wazolongedza wa PC ndi wopanda fungo, wopanda poizoni, wowonekera komanso wonyezimira wofanana ndi pepala lagalasi, ndipo amatha kutenthedwa ndi kutsekedwa ndi kutentha kwambiri komanso kupanikizika.
M'zaka zaposachedwa, kufunikira kwapadziko lonse kwa filimu yolongedza pulasitiki kwawonetsa kukwera kosalekeza, makamaka pamene mafomu oyikapo akupitilira kuchoka pamapaketi olimba kupita kuzinthu zofewa. Ichinso ndiye chinthu chachikulu chomwe chikuyendetsa kukula kwa kufunikira kwa zida zamakanema. Ndiye, kodi mukudziwa mitundu ndi ntchito za filimu yolongedza mapulasitiki? Nkhaniyi ifotokoza makamaka za katundu ndi ntchito za mafilimu angapo apulasitiki apulasitiki
1. Polyethylene ma CD filimu
Kanema wolongedza wa PE ndi filimu yonyamula mapulasitiki yomwe imagwiritsidwa ntchito kwambiri, yomwe imawerengera 40% yazomwe zimawononga filimu yonyamula pulasitiki. Ngakhale kuti filimu yopangira ma PE siili yabwino pakuwoneka, mphamvu, ndi zina zotero, imakhala ndi kulimba kwabwino, kukana chinyezi, ndi ntchito yosindikiza kutentha, ndipo imakhala yosavuta kukonza ndi kupanga pamtengo wotsika, choncho imagwiritsidwa ntchito kwambiri.
a. Otsika osalimba polyethylene ma CD filimu.
LDPE ma CD filimu amapangidwa makamaka ndi extrusion kuwomba akamaumba ndi T-nkhungu njira. Ndi kanema wolongedza wosinthika komanso wowoneka bwino wopanda poizoni komanso wopanda fungo, wokhala ndi makulidwe apakati pa 0.02-0.1mm. Imakhala ndi madzi abwino, osasunthika, chinyezi, kukana chilala, komanso kukhazikika kwamankhwala. Kuchulukirachulukira kwazomwe zimasunga chinyezi komanso kuyika zakudya zachisanu zomwe zimagwiritsidwa ntchito ngati chakudya, mankhwala, zofunikira zatsiku ndi tsiku, ndi zinthu zachitsulo. Koma pazinthu zomwe zimakhala ndi chinyezi chambiri komanso zofunikira zolimbana ndi chinyezi, makanema onyamula bwino osamva chinyezi ndi makanema ophatikizika amayenera kugwiritsidwa ntchito pakuyika. Kanema wolongedza wa LDPE ali ndi mpweya wokwanira, osasunga fungo labwino, komanso kukana mafuta, zomwe zimapangitsa kuti zikhale zosayenera kulongedza zakudya zokhala ndi okosijeni, zokometsera komanso zamafuta. Koma kupuma kwake kumapangitsa kuti ikhale yoyenera kulongedza mwatsopano zinthu zatsopano monga zipatso ndi ndiwo zamasamba. Kanema woyikapo wa LDPE ali ndi zomatira zabwino zotentha komanso kutentha kwapang'onopang'ono, motero amagwiritsidwa ntchito ngati chosanjikiza chomata komanso chosanjikiza chosindikizira kutentha pamakanema ophatikizika. Komabe, chifukwa cha kutentha kwake kosasunthika, sichingagwiritsidwe ntchito ngati chosindikizira kutentha kwa matumba ophikira.
b. Mkulu kachulukidwe polyethylene ma CD filimu. Kanema wapackage wa HDPE ndi filimu yolimba yowoneka bwino yowoneka ngati yoyera yamkaka komanso kunyezimira kosawoneka bwino. Kanema wolongedza wa HDPE ali ndi mphamvu zolimbikira bwino, kukana chinyezi, kukana kutentha, kukana mafuta, komanso kukhazikika kwamankhwala kuposa filimu yonyamula ya LDPE. Itha kukhalanso yosindikizidwa kutentha, koma kuwonekera kwake sikwabwino ngati LDPE. HDPE ikhoza kupangidwa kukhala filimu yopyapyala yokhala ndi makulidwe a 0.01mm. Maonekedwe ake ndi ofanana kwambiri ndi pepala lopyapyala la silika, ndipo limakhala lomasuka kukhudza, lomwe limadziwikanso kuti pepala ngati filimu. Lili ndi mphamvu zabwino, zolimba, ndi zomasuka. Kupititsa patsogolo pepala ngati kumva ndi kuchepetsa mtengo, kashiamu wopepuka wa calcium carbonate ukhoza kuwonjezeredwa. Kanema wamapepala a HDPE amagwiritsidwa ntchito makamaka popanga zikwama zosiyanasiyana zogulira, zikwama za zinyalala, matumba onyamula zipatso, ndi matumba osiyanasiyana onyamula zakudya. Chifukwa chopanda mpweya wabwino komanso kusowa kwa fungo lonunkhira, nthawi yosungiramo zakudya zopakidwa sikhala yayitali. Komanso, HDPE ma CD filimu angagwiritsidwe ntchito ngati kutentha kusindikiza wosanjikiza kwa matumba kuphika chifukwa chabwino kutentha kukana.
c. Liniya otsika osalimba polyethylene ma CD filimu.
Kanema wapang'onopang'ono wa LLDPE ndi filimu yopangira ma polyethylene yomwe yangopangidwa kumene. Poyerekeza ndi filimu yolongedza ya LDPE, filimu yolongedza ya LLDPE imakhala yolimba kwambiri komanso imakhudza mphamvu, kung'ambika, komanso kukana kubowola. Ndi mphamvu yofanana ndi filimu yonyamula LDPE, makulidwe a filimu yopangira LLDPE amatha kuchepetsedwa kukhala 20-25% ya filimu yopangira LDPE, potero amachepetsa kwambiri ndalama. Ngakhale atagwiritsidwa ntchito ngati thumba lonyamula katundu, makulidwe ake amangofunika kukhala 0.1mm kuti akwaniritse zofunikira, zomwe zitha kulowa m'malo mwa polyethylene yotsika mtengo ya polima. Chifukwa chake, LLDPE ndiyoyenera kulongedza zofunikira zatsiku ndi tsiku, kuyika zakudya zachisanu, komanso imagwiritsidwanso ntchito kwambiri ngati matumba onyamula katundu olemera ndi matumba a zinyalala.
2. Polypropylene ma CD filimu
PP ma CD filimu amagawidwa mu filimu osatambasula ma CD ndi biaxially anatambasula ma CD filimu. Mitundu iwiri ya filimu yolongedza imakhala ndi kusiyana kwakukulu pakuchita, kotero iyenera kuonedwa ngati mitundu iwiri yosiyana ya filimu yonyamula.
1) Kanema wosatambasula wa polypropylene.
Kanema wosatambasulidwa wa ma polypropylene amaphatikizanso filimu yolongedza ya polypropylene (IPP) yopangidwa ndi njira yowumbidwa ndi extrusion blowing ndi filimu yotulutsa polypropylene (CPP) yopangidwa ndi njira ya T-mold. Kuwonekera komanso kulimba kwa filimu yolongedza PP ndizosauka; Ndipo imakhala yowonekera kwambiri komanso kulimba kwabwino. Kanema wolongedza wa CPP amakhala wowonekera bwino komanso wonyezimira, ndipo mawonekedwe ake ndi ofanana ndi a pepala lagalasi. Poyerekeza ndi filimu yopangira ma PE, filimu yosatambasulidwa ya polypropylene imakhala yowonekera bwino, yonyezimira, kukana chinyezi, kukana kutentha, komanso kukana mafuta; Mphamvu zamakina apamwamba, kukana bwino kwa misozi, kukana kuphulika, ndi kukana kuvala; Ndipo ilibe poizoni komanso yopanda fungo. Chifukwa chake, amagwiritsidwa ntchito kwambiri kunyamula zakudya, mankhwala, nsalu ndi zinthu zina. Koma ilibe kukana chilala ndipo imakhala yolimba pa 0-10 ℃, kotero singagwiritsidwe ntchito kuyika zakudya zachisanu. Kanema wosatambasulidwa wa polypropylene amakhala ndi kukana kutentha kwambiri komanso ntchito yabwino yosindikiza kutentha, motero amagwiritsidwa ntchito ngati chosindikizira cha kutentha kwa matumba ophikira.
2) Biaxially oriented polypropylene packaging film (BOPP).
Poyerekeza ndi filimu yosatambasulidwa ya polypropylene, filimu yonyamula ya BOPP imakhala ndi izi: ① Kuwoneka bwino komanso kunyezimira, kufananiza ndi pepala lagalasi; ② Mphamvu zamakina zimawonjezeka, koma kutalika kumachepa; ③ Kupititsa patsogolo kukana kuzizira komanso kulibe brittleness ngakhale kugwiritsidwa ntchito pa -30 ~ -50 ℃; ④ The chinyezi permeability ndi mpweya permeability amachepetsedwa ndi theka, ndipo organic nthunzi permeability amatsitsidwanso pa magawo osiyanasiyana; ⑤ Kanema umodzi sungathe kusindikizidwa mwachindunji kutentha, koma ntchito yake yosindikiza kutentha imatha kupitilizidwa ndi zomatira ndi mafilimu ena apulasitiki.
Kanema wolongedza wa BOPP ndi mtundu watsopano wa kanema wolongedza wopangidwa kuti alowe m'malo mwa pepala lagalasi. Ili ndi mawonekedwe amphamvu yamakina apamwamba, kulimba kwabwino, kuwonekera bwino komanso glossiness. Mtengo wake ndi pafupifupi 20% wotsika kuposa wa pepala lagalasi. Chifukwa chake yasintha kapena pang'ono m'malo mwa mapepala agalasi m'mapaketi azakudya, mankhwala, ndudu, nsalu, ndi zinthu zina. Koma kusungunuka kwake ndikokwera kwambiri ndipo sikungagwiritsidwe ntchito popaka maswiti. Kanema wolongedza wa BOPP amagwiritsidwa ntchito kwambiri ngati zinthu zoyambira zamakanema ophatikizika. Makanema ophatikizika amapaka opangidwa kuchokera ku zojambulazo za aluminiyamu ndi makanema ena oyika mapulasitiki amatha kukwaniritsa zofunikira zamapaketi azinthu zosiyanasiyana ndipo akhala akugwiritsidwa ntchito kwambiri.
3. Filimu yodzaza ndi polyvinyl chloride
PVC ma CD filimu amagawidwa mu filimu zofewa ma CD ndi zovuta ma CD filimu. The elongation, kukana misozi, ndi kuzizira kukana kwa zofewa PVC ma CD filimu zabwino; Zosavuta kusindikiza ndi kusindikiza kutentha; Ikhoza kupangidwa kukhala filimu yowonetsera yowonekera. Chifukwa cha fungo la mapulasitiki ndi kusamuka kwa mapulasitiki, filimu yofewa ya PVC nthawi zambiri siyenera kuyika chakudya. Koma filimu yofewa ya PVC yopangidwa ndi njira yamkati ya plasticization ingagwiritsidwe ntchito kunyamula chakudya. Nthawi zambiri, filimu yosinthira ya PVC imagwiritsidwa ntchito kwambiri pazinthu zamafakitale komanso osapanga chakudya.
Filimu yonyamula ya PVC yolimba, yomwe imadziwika kuti pepala lagalasi la PVC. Kuwonekera kwakukulu, kuuma, kulimba kwabwino, ndi kupotoza kokhazikika; Imakhala ndi mpweya wabwino, imasunga kununkhira, komanso kukana chinyezi; Kusindikiza kwabwino kwambiri, kumatha kupanga filimu yopanda poizoni. Amagwiritsidwa ntchito kwambiri pakuyika zopindika zamaswiti, kulongedza kwa nsalu ndi zovala, komanso filimu yoyika kunja kwa ndudu ndi mabokosi oyika chakudya. Komabe, PVC yolimba imakhala yosakanizika kuzizira ndipo imakhala yosasunthika pakatentha pang'ono, ndikupangitsa kuti ikhale yosayenera ngati chosungiramo chakudya chachisanu.
4. Polystyrene ma CD filimu
Kanema wapackage wa PS ali ndi kuwonekera kwambiri komanso kunyezimira, mawonekedwe okongola, komanso kusindikiza bwino; Mayamwidwe otsika amadzi komanso kuthekera kwakukulu kwa mpweya ndi nthunzi wamadzi. Kanema wosatambasulidwa wa polystyrene ndi wovuta komanso wosasunthika, wokhala ndi kufalikira pang'ono, kulimba kwamphamvu, komanso kukana kwamphamvu, motero sagwiritsidwa ntchito ngati cholembera chosinthika. Zida zazikulu zoyikamo zomwe zimagwiritsidwa ntchito ndi filimu yonyamula ya biaxially oriented polystyrene (BOPS) ndi filimu yotengera kutentha.
Kanema wapackage wa BOPS wopangidwa ndi biaxial stretching wasintha kwambiri mawonekedwe ake akuthupi komanso amakina, makamaka kutalika, kulimba, komanso kulimba, ndikusungabe kuwonekera kwake koyambirira komanso kunyezimira. Kupuma kwabwino kwa filimu yolongedza ya BOPS kumapangitsa kukhala koyenera kwambiri kulongedza zakudya zatsopano monga zipatso, masamba, nyama ndi nsomba, komanso maluwa.
5. Polyvinylidene kloride ma CD filimu
Kanema wolongedza wa PVDC ndi filimu yosinthira, yowonekera, komanso yotchinga kwambiri. Imakhala ndi kukana chinyezi, kuthina kwa mpweya, komanso kusunga fungo; Ndipo imalimbana kwambiri ndi asidi amphamvu, alkalis amphamvu, mankhwala, ndi mafuta; Kanema wosasunthika wa PVDC amatha kusindikizidwa kutentha, komwe kuli koyenera kwambiri kulongedza chakudya ndikusunga kukoma kwa chakudya kosasinthika kwa nthawi yayitali.
Ngakhale filimu yolongedza ya PVDC ili ndi mphamvu zamakina abwino, kuuma kwake kumakhala kocheperako, kumakhala kofewa kwambiri komanso kumakonda kumamatira, komanso kugwira ntchito kwake kumakhala koyipa. Kuphatikiza apo, PVDC ili ndi crystallinity yolimba, ndipo filimu yake yoyikamo imakhala yosavuta kuphulika kapena ma microcracks, kuphatikiza ndi mtengo wake wapamwamba. Chifukwa chake pakadali pano, filimu yolongedza ya PVDC sagwiritsidwa ntchito kwambiri ngati filimu imodzi ndipo imagwiritsidwa ntchito kwambiri popanga filimu yophatikizika.
6. Ethylene vinilu acetate copolymer ma CD filimu
Kachitidwe ka filimu yonyamula EVA ikugwirizana ndi zomwe zili mu vinyl acetate (VA). Kukwera kwa VA, kumapangitsa kuti filimuyo ikhale yabwinoko, kukana kupsinjika, kutentha pang'ono, komanso kutentha kwa filimu yosindikizira. Zolemba za VA zikafika 15% ~ 20%, machitidwe a filimu yonyamula amakhala pafupi ndi filimu yofewa ya PVC. Kutsika kwa VA zomwe zili m'munsizi, filimuyo imakhala yochepa kwambiri, ndipo machitidwe ake ali pafupi ndi filimu ya LDPE. Zomwe zili mu VA mufilimu yonyamula EVA ndi 10% ~ 20%.
Kanema wapackage wa EVA ali ndi kusindikiza kwabwino kwa kutentha kwapang'onopang'ono komanso kuphatikiza kusindikiza, kupangitsa kuti ikhale filimu yabwino kwambiri yosindikizira komanso yomwe imagwiritsidwa ntchito ngati chosindikizira cha kutentha kwamakanema ophatikizika. Kutentha kwa filimu yonyamula EVA ndikosavuta, ndi kutentha kwa 60 ℃. Kupanda mpweya wake ndi koipa, ndipo sachedwa kumamatira ndi kununkhiza. Chifukwa chake filimu yonyamula yamtundu umodzi wa EVA nthawi zambiri sagwiritsidwa ntchito mwachindunji pakuyika chakudya.
7. Filimu yonyamula mowa ya polyvinyl
Kanema wapackage wa PVA amagawidwa kukhala filimu yosagwira madzi komanso filimu yosungunuka ndi madzi. Kanema wosamva madzi amapangidwa kuchokera ku PVA yokhala ndi digiri ya polymerization yopitilira 1000 ndi saponification wathunthu. Kanema wosungunula m'madzi amapangidwa kuchokera ku PVA yokhala ndi saponified pang'ono ndi digiri yotsika ya polymerization. Kanema wamkulu wazolongedza yemwe amagwiritsidwa ntchito ndi filimu yosagwira madzi ya PVA.
Kanema wapackage wa PVA ali ndi kuwonekera bwino komanso kunyezimira, sikophweka kudziunjikira magetsi osasunthika, sikophweka kutsatsa fumbi, komanso kusindikiza bwino. Imakhala ndi kulimba kwa mpweya komanso kununkhira kowuma, komanso kukana mafuta bwino; Ali ndi mphamvu zamakina abwino, kulimba, komanso kukana kupsinjika kwamphamvu; Ikhoza kusindikizidwa kutentha; Kanema wapackage wa PVA ali ndi kuthekera kwakukulu kwa chinyezi, kuyamwa mwamphamvu, komanso kukula kosakhazikika. Chifukwa chake, zokutira za polyvinylidene chloride, zomwe zimadziwikanso kuti K, zimagwiritsidwa ntchito nthawi zambiri. Kanemayo wokutira wa PVA uyu amatha kusunga mpweya wabwino kwambiri, kusunga fungo labwino, komanso kukana chinyezi ngakhale pansi pa chinyezi chambiri, ndikupangitsa kuti ikhale yoyenera kunyamula chakudya. Kanema wama CD wa PVA nthawi zambiri amagwiritsidwa ntchito ngati chotchinga chotchinga filimu yophatikizika, yomwe imagwiritsidwa ntchito kwambiri pakuyika zakudya zachangu, nyama, zonona ndi zakudya zina. Filimu imodzi ya PVA imagwiritsidwanso ntchito kwambiri kulongedza nsalu ndi zovala.
Kanema wosungunula wamadzi a PVA atha kugwiritsidwa ntchito kuyeza kuyika kwa mankhwala monga mankhwala ophera tizilombo, zotsukira, zowulira, utoto, mankhwala ophera tizilombo, ndi zikwama zochapira zovala za odwala. Ikhoza kuikidwa mwachindunji m'madzi popanda kutsegula.
8. Nayiloni ma CD filimu
Kanema wolongedza nayiloni makamaka amaphatikiza mitundu iwiri: filimu yotambasula ya biaxially ndi filimu yosatambasula, yomwe filimu yonyamula nylon yotambasulidwa ya biaxially (BOPA) imagwiritsidwa ntchito kwambiri. Kanema wosatambasulidwa wa nayiloni ali ndi kutalika kwapadera ndipo amagwiritsidwa ntchito makamaka pakuyika vacuum yakuya.
Kanema wapackage wa nayiloni ndi filimu yonyamula mwamphamvu kwambiri yomwe ilibe poizoni, yopanda fungo, yowoneka bwino, yonyezimira, yosakonda kudziunjikira magetsi osasunthika, ndipo imakhala ndi ntchito yabwino yosindikiza. Ili ndi mphamvu zamakina apamwamba, kuwirikiza katatu kulimba kwa filimu yonyamula ma PE, komanso kukana kwamphamvu kwambiri komanso kukana kutulutsa. Kanema wonyamula nayiloni ali ndi kukana kutentha kwabwino, kukana thukuta, komanso kukana mafuta, koma ndikovuta kusindikiza. Kanema woyikapo nayiloni amakhala ndi mpweya wabwino pamalo owuma, koma amakhala ndi chinyezi chambiri komanso kuyamwa kwamadzi mwamphamvu. M'malo okhala ndi chinyezi chambiri, kukhazikika kwa dimensional kumakhala kocheperako ndipo kutsekeka kwa mpweya kumachepa kwambiri. Chifukwa chake, zokutira za polyvinylidene chloride (KNY) kapena zophatikizika ndi filimu yonyamula ya PE nthawi zambiri zimagwiritsidwa ntchito kuwongolera kukana kwamadzi, kukana chinyezi, komanso kusindikiza kutentha. Kanemayu wophatikizika wa NY/PE uyu amagwiritsidwa ntchito kwambiri popanga zakudya. Kupaka kwa nayiloni kumagwiritsidwa ntchito kwambiri popanga mafilimu ophatikizika komanso ngati gawo laling'ono lamakanema akulongedza aluminiyamu.
Kanema woyika za nayiloni ndi filimu yake yophatikizira yophatikizika amagwiritsidwa ntchito makamaka pakuyika zakudya zamafuta ambiri, chakudya wamba, chakudya chozizira, komanso chakudya chambiri. Kanema wosatambasulidwa wa nayiloni, chifukwa cha kuchuluka kwake, atha kugwiritsidwa ntchito posungirako nyama yokongoletsedwa, nyama yambiri yamafupa ndi zakudya zina.
9. Ethylene vinilu mowa copolymerfilimu yonyamula
Kanema wolongedza wa EVAL ndi mtundu watsopano wafilimu yotchinga kwambiri yopangidwa mzaka zaposachedwa. Ili ndi kuwonekera bwino, chotchinga mpweya, kusunga kununkhira, komanso kukana mafuta. Koma hygroscopicity yake ndi yolimba, yomwe imachepetsa zotchinga zake pambuyo poyamwa chinyezi.
Kanema wamapaketi a EVAL nthawi zambiri amapangidwa kukhala filimu yophatikizira pamodzi ndi zinthu zosagwirizana ndi chinyezi, zomwe zimagwiritsidwa ntchito kulongedza zinthu zanyama monga soseji, ham, ndi chakudya chofulumira. Filimu imodzi ya EVAL itha kugwiritsidwanso ntchito kuyika zinthu zopangidwa ndi ulusi ndi zinthu zaubweya.
10. Filimu yonyamula poliyesitala imapangidwa ndi filimu yopangira biaxially oriented polyester (BOPET).
Kanema wamapaketi a PET ndi mtundu wa filimu yolongedza ndikuchita bwino. Ili ndi mawonekedwe abwino komanso owala; Imakhala ndi mpweya wabwino komanso kusunga fungo; Kukana chinyezi chochepa, ndi kuchepa kwa chinyezi permeability pa kutentha otsika. Makina opangira filimu ya PET ndiabwino kwambiri, ndipo kulimba kwake ndi kulimba kwake ndizabwino kwambiri pakati pa mapulasitiki onse a thermoplastic. Mphamvu zake zolimba komanso mphamvu zake ndizokwera kwambiri kuposa filimu yonyamula; Ndipo ili ndi kukhazikika bwino komanso kukula kokhazikika, koyenera kukonzedwa kwachiwiri monga kusindikiza ndi zikwama zamapepala. Kanema wamapaketi a PET alinso ndi kutentha kwambiri komanso kukana kuzizira, komanso kukana kwamafuta ndi mafuta. Koma si kugonjetsedwa ndi alkali wamphamvu; Zosavuta kunyamula magetsi osasunthika, palibe njira yoyenera yolimbana ndi ma static, kotero chidwi chiyenera kuperekedwa pakulongedza zinthu za ufa.
Kusindikiza kutentha kwa filimu yolongedza PET ndizovuta kwambiri komanso zokwera mtengo, kotero sikumagwiritsidwa ntchito kawirikawiri ngati filimu imodzi. Ambiri aiwo ndi opangidwa ndi PE kapena PP ma CD filimu yokhala ndi zinthu zabwino zosindikizira kutentha kapena zokutira ndi polyvinylidene chloride. Kanema wophatikizika uyu wozikidwa pa filimu yoyika pa PET ndi chinthu chabwino kwambiri popanga zida zamakina ndipo amagwiritsidwa ntchito kwambiri pakupakira zakudya monga kutentha, kuphika, ndi kuzizira.
11. Filimu yonyamula polycarbonate
Kanema wazolongedza wa PC ndi wopanda fungo komanso wopanda poizoni, wowoneka bwino komanso wonyezimira wofanana ndi pepala lagalasi, ndipo mphamvu yake imafanana ndi filimu yolongedza ya PET ndi filimu yonyamula ya BONY, makamaka kukana kwake. Kanema wazolongedza wa PC amakhala ndi fungo labwino kwambiri, kulimba kwa mpweya wabwino komanso kukana chinyezi, komanso kukana kwa UV. ali ndi kukana mafuta bwino; Imakhalanso ndi kutentha kwabwino komanso kuzizira. Ikhoza kutenthedwa ndi chosawilitsidwa pansi pa kutentha kwakukulu ndi kuthamanga kwakukulu; Kukana kutentha pang'ono ndi kukana kuzizira kuli bwino kuposa filimu yonyamula PET. Koma ntchito yake yosindikiza kutentha ndi yoipa.
Kanema wazolongedza wa PC ndi chinthu choyenera kunyamula chakudya, chomwe chitha kugwiritsidwa ntchito pakuyika zakudya zotentha, zowuma, komanso zokometsera. Pakali pano, chifukwa cha mtengo wake wokwera, amagwiritsidwa ntchito makamaka pakuyika mapiritsi amankhwala ndi ma CD osabala.
12. Kanema wa acetate cellulose
Kanema wolongedza wa CA ndi wowonekera, wonyezimira, komanso wosalala. Ndi yolimba, yosasunthika kukula kwake, sikophweka kudziunjikira magetsi, ndipo imakhala ndi ma processability abwino; Yosavuta kulumikizana ndipo ili ndi kusindikiza kwabwino. Ndipo ili ndi kukana madzi, kukana kupindika, komanso kulimba. The mpweya permeability ndi chinyezi permeability wa CA ma CD filimu ndi wokwera kwambiri, amene angagwiritsidwe ntchito "kupuma" phukusi la masamba, zipatso, ndi zinthu zina.
Kanema wolongedza wa CA amagwiritsidwa ntchito ngati gawo lakunja la filimu yophatikizika chifukwa cha mawonekedwe ake abwino komanso kusindikiza kosavuta. Filimu yake yophatikizika yophatikizika imagwiritsidwa ntchito kwambiri pakulongedza mankhwala, chakudya, zodzoladzola ndi zinthu zina.
13. Ionic yomangidwa polimama CD filimu mpukutu
Kuwonekera komanso kunyezimira kwa filimu yoyikapo polima ya ion ndi yabwino kuposa ya filimu ya PE, ndipo ilibe poizoni. Ili ndi kulimba kwa mpweya wabwino, kufewa, kulimba, kukana kuphulika, komanso kukana mafuta. Oyenera kulongedza zinthu zaang'ono ndikuyika kutentha kwa chakudya. Ntchito yake yosindikiza kutentha kwapang'onopang'ono ndi yabwino, kutentha kwa kutentha kwa kutentha kumakhala kwakukulu, ndipo ntchito yosindikiza kutentha imakhala yabwino ngakhale ndi inclusions, kotero imagwiritsidwa ntchito ngati chosindikizira cha kutentha kwa mafilimu ophatikizika. Kuphatikiza apo, ma polima omangika a ion amakhala ndi matenthedwe abwino ndipo amatha kulumikizidwa ndi mapulasitiki ena kuti apange makanema apakanema.
Nthawi yotumiza: Feb-11-2025