Mafilimu osiyanasiyana amagwiritsidwa ntchito pa moyo wa tsiku ndi tsiku. Kodi mafilimuwa amapangidwa ndi zipangizo zotani? Kodi aliyense ali ndi mawonekedwe otani? Zotsatirazi ndizofotokozera mwatsatanetsatane mafilimu apulasitiki omwe amagwiritsidwa ntchito kwambiri pamoyo watsiku ndi tsiku:
Filimu ya pulasitiki ndi filimu yopangidwa ndi polyvinyl chloride, polyethylene, polypropylene, polystyrene ndi ma resins ena, omwe amagwiritsidwa ntchito popanga, kumanga, komanso ngati zokutira, etc.
Pulasitiki filimu akhoza kugawidwa mu
- Kanema wamafakitale: filimu yowombedwa, filimu ya kalendala, filimu yotambasulidwa, filimu yoponyedwa, ndi zina zotero;
- filimu yokhetsa ulimi, filimu ya mulch, ndi zina zotero;
-Makanema onyamula (kuphatikiza makanema ophatikizika opangira mankhwala, makanema ophatikizika opangira chakudya, etc.).
Ubwino ndi kuipa kwa filimu yapulasitiki:
Mawonekedwe a mafilimu akuluakulu apulasitiki:
Biaxially Oriented Polypropylene Film (BOPP)
Polypropylene ndi thermoplastic resin yopangidwa ndi polymerization ya propylene. Zida za Copolymer PP zimakhala ndi kutentha kwapang'onopang'ono kwa kutentha (100 ° C), kutsika pang'ono, kuwala kochepa, ndi kukhazikika kochepa, koma zimakhala ndi mphamvu zowonjezera, ndipo mphamvu ya PP imawonjezeka ndi kuwonjezeka kwa ethylene. Kutentha kwa Vicat kufewetsa kwa PP ndi 150 ° C. Chifukwa cha kuchuluka kwa crystallinity, nkhaniyi ili ndi kuuma kwapamwamba kwambiri komanso kukana kukana. PP ilibe zovuta zosokoneza chilengedwe.
Biaxially oriented polypropylene film (BOPP) ndi zinthu zosinthira zowoneka bwino zomwe zidapangidwa m'ma 1960s. Zimagwiritsa ntchito chingwe chapadera chopangira kusakaniza zopangira za polypropylene ndi zowonjezera zowonjezera, kusungunula ndikuzikanda kukhala mapepala, kenako kuzitambasula kukhala mafilimu. Amagwiritsidwa ntchito kwambiri popaka chakudya, maswiti, ndudu, tiyi, madzi, mkaka, nsalu, ndi zina zotero, ndipo ali ndi mbiri ya "Packaging Queen". Kuphatikiza apo, itha kugwiritsidwanso ntchito pokonzekera zinthu zogwiritsidwa ntchito kwambiri zamtengo wapatali monga ma nembanemba amagetsi ndi ma membrane a microporous, kotero kuti chiyembekezo chakukula kwa mafilimu a BOPP ndi otakata kwambiri.
Kanema wa BOPP samangokhala ndi zabwino zotsika kachulukidwe, kukana bwino kwa dzimbiri komanso kukana kwabwino kwa kutentha kwa PP utomoni, komanso imakhala ndi zinthu zabwino zowoneka bwino, mphamvu zamakina apamwamba komanso magwero olemera azinthu zopangira. Kanema wa BOPP amatha kuphatikizidwa ndi zida zina zokhala ndi zinthu zapadera kuti apititse patsogolo kapena kukonza magwiridwe antchito. Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo filimu ya PE, filimu ya polypropylene (CPP), polyvinylidene chloride (PVDC), filimu ya aluminiyamu, ndi zina zotero.
Filimu Yotsika Kachulukidwe ka Polyethylene (LDPE)
Filimu ya polyethylene, yomwe ndi PE, ili ndi mawonekedwe a kukana chinyezi komanso kutsika kwa chinyezi.
Low-density polyethylene (LPDE) ndi utomoni wopangidwa ndi ethylene radical polymerization pansi pa kuthamanga kwambiri, motero amatchedwanso "high-pressure polyethylene". LPDE ndi molekyulu ya nthambi yokhala ndi nthambi zautali wosiyana pa tcheni chachikulu, chokhala ndi nthambi pafupifupi 15 mpaka 30 za ethyl, butyl kapena zazitali pa maatomu 1000 a kaboni mu tcheni chachikulu. Chifukwa unyolo wa maselo ali ndi unyolo wautali komanso wamfupi wa nthambi, mankhwalawa ali ndi kachulukidwe kochepa, kufewa, kukana kutentha, kukana bwino, kukhazikika kwamankhwala abwino, komanso kukana acid (kupatula ma oxidizing amphamvu), Alkali, dzimbiri lamchere, lili ndi zabwino. magetsi kutchinjiriza katundu. Translucent ndi glossy, ali kwambiri bata mankhwala, kutentha sealability, madzi kukana ndi chinyezi kukana, kuzizira kukana, ndipo akhoza yowiritsa. Choyipa chake chachikulu ndikulepheretsa kwake mpweya wabwino.
Nthawi zambiri amagwiritsidwa ntchito ngati filimu yamkati yosanjikiza yazinthu zophatikizika zosinthika, komanso ndiyomwe imagwiritsidwa ntchito kwambiri komanso filimu yopangira mapulasitiki pakali pano, yomwe imawerengera zopitilira 40% zamakanema opangira mapulasitiki. Pali mitundu yambiri yamafilimu onyamula polyethylene, ndipo machitidwe awo amasiyananso. Masewero a filimu ya single-wosanjikiza ndi amodzi, ndipo kasewero ka filimu yophatikizika ndi kothandizana. Ndizinthu zazikulu zopangira chakudya. Kachiwiri, filimu ya polyethylene imagwiritsidwanso ntchito m'munda wa zomangamanga, monga geomembrane. Imagwira ntchito ngati yopanda madzi mu engineering ya Civil engineering ndipo imakhala yotsika kwambiri. Filimu yaulimi imagwiritsidwa ntchito paulimi, yomwe imatha kugawidwa mu filimu yokhetsedwa, filimu ya mulch, filimu yowawa yophimba, filimu yosungiramo zobiriwira ndi zina zotero.
Filimu ya polyester (PET)
Filimu ya polyester (PET), yomwe imadziwika kuti polyethylene terephthalate, ndi pulasitiki yaukadaulo wa thermoplastic. Ndi filimu zakuthupi zopangidwa ndi mapepala wandiweyani ndi extrusion ndiyeno biaxially anatambasula. Filimu ya polyester imadziwika ndi zinthu zabwino kwambiri zamakina, kulimba kwambiri, kuuma komanso kulimba, kukana kuphulika, kukana kukangana, kutentha kwambiri komanso kutsika kwa kutentha, kukana kwamankhwala, kukana kwamafuta, kulimba kwa mpweya ndi kusungirako fungo. Chimodzi mwazinthu zokhazikika zamakanema ophatikizika, koma kukana kwa corona sikwabwino.
Mtengo wa filimu ya poliyesitala ndi wokwera kwambiri, ndipo makulidwe ake nthawi zambiri ndi 0.12 mm. Nthawi zambiri amagwiritsidwa ntchito ngati zinthu zakunja zopakira zakudya zopakira, ndipo zimasindikizidwa bwino. Kuphatikiza apo, filimu ya poliyesitala imagwiritsidwa ntchito ngati zosindikizira ndi kuyika zinthu monga filimu yoteteza chilengedwe, filimu ya PET, ndi filimu yoyera yamkaka, ndipo imagwiritsidwa ntchito kwambiri m'mafakitale monga mapulasitiki olimbitsa magalasi, zida zomangira, kusindikiza, zamankhwala ndi thanzi.
Filimu yapulasitiki ya nayiloni (ONY)
Dzina la mankhwala la nayiloni ndi polyamide (PA). Pakali pano, pali mitundu yambiri ya nayiloni yomwe imapangidwa m'mafakitale, ndipo mitundu yayikulu yomwe imagwiritsidwa ntchito popanga mafilimu ndi nayiloni 6, nayiloni 12, nayiloni 66, ndi zina zotero. mphamvu yamanjenje, komanso kukana kutentha kwabwino, kukana kuzizira, kukana kwamafuta ndi kukana kosungunulira kwa organic. Wabwino kuvala kukana ndi puncture kukana, ndi zofewa, kwambiri mpweya chotchinga katundu, koma osauka chotchinga katundu kwa nthunzi madzi, mayamwidwe mkulu chinyezi ndi permeability chinyezi, osauka kutentha salability, oyenera ma CD zinthu zolimba, monga greasy Kugonana chakudya, nyama nyama, yokazinga. chakudya, zakudya zodzaza ndi vacuum, zakudya zotentha, etc.
Kanema wa Cast Polypropylene (CPP)
Mosiyana ndi filimu ya biaxially oriented polypropylene film (BOPP), filimu ya polypropylene (CPP) ndi filimu yosatambasulidwa, yosalunjika, yopangidwa ndi kusungunula ndi kuzimitsa. Imadziwika ndi liwiro lopanga mwachangu, kutulutsa kwakukulu, kuwonekera bwino kwa kanema, gloss, makulidwe ofanana, komanso kuwongolera bwino kwazinthu zosiyanasiyana. Chifukwa ndi filimu yowonongeka, ntchito zotsatila monga kusindikiza ndi kuphatikizira ndizosavuta kwambiri. CPP imagwiritsidwa ntchito kwambiri pakupakira nsalu, maluwa, chakudya, ndi zofunikira zatsiku ndi tsiku.
Filimu yapulasitiki yokhala ndi aluminium
Filimu ya aluminiyamu imakhala ndi mawonekedwe a filimu yapulasitiki komanso mawonekedwe achitsulo. Ntchito ya aluminiyamu plating pamwamba pa filimuyo ndi kuteteza kuwala ndi kuteteza ultraviolet kuwala, amene osati kutalikitsa alumali moyo wa nkhani, komanso bwino kuwala kwa filimuyo. Chifukwa chake, filimu yopangidwa ndi aluminiyamu imagwiritsidwa ntchito kwambiri pakuyika zophatikizika, zomwe zimagwiritsidwa ntchito kwambiri popaka zakudya zowuma komanso zodzitukumula monga mabisiketi, komanso zopangira zakunja zamankhwala ndi zodzoladzola zina.
Nthawi yotumiza: Jul-19-2023
