Chikwama cholongedza cha pulasitiki ndi mtundu wa chikwama choyikapo chomwe chimagwiritsa ntchito pulasitiki ngati zopangira ndipo chimagwiritsidwa ntchito popanga zinthu zosiyanasiyana m'moyo. Amagwiritsidwa ntchito kwambiri m'moyo watsiku ndi tsiku komanso kupanga mafakitale, koma kusavuta panthawiyi kumabweretsa kuvulaza kwanthawi yayitali. Matumba apulasitiki omwe amagwiritsidwa ntchito kwambiri nthawi zambiri amapangidwa ndi filimu ya polyethylene, yomwe ilibe poizoni, kotero imatha kugwiritsidwa ntchito kukhala ndi chakudya. Palinso filimu yopangidwa ndi polyvinyl chloride, yomwe ilibe poizoni, koma zowonjezera zomwe zimawonjezeredwa malinga ndi kugwiritsa ntchito filimuyo nthawi zambiri zimakhala zovulaza ndipo zimakhala ndi poizoni. Choncho, mafilimu otere ndi matumba apulasitiki opangidwa ndi mafilimu sali oyenera kukhala ndi chakudya.
Matumba opaka pulasitiki amatha kugawidwaOPP, CPP, PP, Pe, PVA, EVA, matumba gulu, matumba co-extrusion, ndi zina.
| CPP | Zopanda poizoni, zowonjezereka, zowonekera bwino kuposa PE, kuuma koipitsitsa pang'ono. Mapangidwe ake ndi ofewa, ndi kuwonekera kwa PP ndi kufewa kwa PE. |
| PP | Kuuma kwake ndikotsika kwa OPP, ndipo kumatha kutambasulidwa (kutambasula kwanjira ziwiri) kenako kukokera mu katatu, chisindikizo chapansi kapena chisindikizo chakumbali. |
| PE | Pali formalin, yomwe imawonekera pang'ono |
| PVA | Kapangidwe kofewa, kuwonekera bwino, ndi mtundu watsopano wazinthu zoteteza chilengedwe, zimasungunuka m'madzi, zopangira zimatumizidwa kuchokera ku Japan, mtengo wake ndi wokwera mtengo, ndipo umagwiritsidwa ntchito kwambiri kunja. |
| OPP | Kuwonekera bwino, kuuma kolimba |
| Chikwama chophatikiza | Mphamvu zosindikizira zamphamvu, zosindikizidwa, inki sizidzagwa |
| Co-extruded thumba | Kuwonekera bwino, mawonekedwe ofewa, osindikizidwa |
Matumba opaka pulasitiki amatha kugawidwa kukhala: zikwama zapulasitiki zoluka ndi matumba amafilimu apulasitiki malinga ndi kapangidwe kazinthu ndi ntchito zosiyanasiyana.
thumba loluka
Matumba opangidwa ndi pulasitiki amapangidwa ndi matumba a polypropylene ndi matumba a polyethylene malinga ndi zida zazikulu;
Malinga ndi njira yosokera, imagawidwa mu thumba la pansi la msoko ndi thumba la pansi la msoko.
Choyikapo chomwe chimagwiritsidwa ntchito kwambiri mu feteleza, mankhwala ndi zinthu zina. Njira yake yayikulu yopangira ndikugwiritsa ntchito zida za pulasitiki kutulutsa filimu, kudula, ndi kutambasula mosadukiza mu ulusi wathyathyathya, ndikupeza zinthu kudzera muzoluka ndi ulusi, zomwe zimatchedwa matumba oluka.
Mawonekedwe: kulemera kwakukulu, mphamvu zambiri, kukana kwa dzimbiri, etc. Pambuyo powonjezera filimu ya pulasitiki, ikhoza kukhala chinyezi-umboni ndi chinyezi-umboni; katundu mphamvu matumba kuwala ndi pansi 2.5kg, katundu mphamvu matumba sing'anga ndi 25-50kg, ndi katundu mphamvu matumba olemera ndi 50-100kg.
thumba la filimu
Zopangira za thumba la filimu ya pulasitiki ndi polyethylene. Matumba apulasitiki abweretsadi kufewetsa m'miyoyo yathu, koma kumasuka pa nthawi ino kwabweretsa kuvulaza kwanthawi yayitali.
Zodziwika ndi zopangira: matumba apulasitiki apamwamba a polyethylene, matumba apulasitiki a polyethylene otsika, matumba apulasitiki a polypropylene, matumba apulasitiki a polyvinyl chloride, etc.
Gulu mwa mawonekedwe: thumba la vest, thumba lolunjika. Matumba osindikizidwa, matumba apulasitiki, matumba ooneka ngati apadera, etc.
Mawonekedwe: matumba opepuka okhala ndi katundu wopitilira 1kg; matumba apakati ndi katundu wa 1-10kg; matumba olemera ndi katundu wa 10-30kg; matumba a chidebe ndi katundu woposa 1000kg.
Matumba a pulasitiki a chakudya amagwiritsidwa ntchito m'miyoyo ya anthu, koma muyenera kusamala mukamagwiritsa ntchito. Matumba ena oyikamo apulasitiki ndi apoizoni ndipo sangagwiritsidwe ntchito kusunga chakudya mwachindunji.
1. Kuyang'ana ndi maso
Matumba apulasitiki opanda poizoni ndi oyera, owonekera kapena owonekera pang'ono, ndipo amakhala ndi mawonekedwe ofanana; matumba apulasitiki a poizoni ndi amitundu kapena oyera, koma osawonekera bwino komanso osasunthika, ndipo pulasitiki pamwamba pake ndi yotambasulidwa mosiyanasiyana ndipo imakhala ndi tinthu tating'ono.
2. Mvetserani ndi makutu anu
Chikwama cha pulasitiki chikagwedezeka mwamphamvu ndi dzanja, phokoso lomveka bwino limasonyeza kuti ndi thumba lapulasitiki lopanda poizoni; ndipo phokoso laling'ono ndi lopanda phokoso ndi thumba lapulasitiki lapoizoni.
3. Kukhudza pamanja
Gwirani pamwamba pa thumba la pulasitiki ndi dzanja lanu, ndi losalala kwambiri komanso lopanda poizoni; zomata, zoziziritsa kukhosi, kumva phula ndi poizoni.
4. Kununkhiza ndi mphuno
Matumba apulasitiki opanda poizoni alibe fungo; omwe ali ndi fungo lopweteka kapena kukoma kosazolowereka ndi poizoni.
5. Njira yoyesera yomiza
Ikani thumba la pulasitiki m'madzi, likanikizire pansi pamadzi ndi dzanja lanu, dikirani kwakanthawi, thumba la pulasitiki lopanda poizoni lomwe lidawonekera ndi thumba la pulasitiki lopanda poizoni, ndi lomwe limamira. M'munsimu muli chikwama chapulasitiki chapoizoni.
6. Njira yoyaka moto
Matumba apulasitiki opanda poizoni amatha kuyaka, nsonga ya lawilo ndi yachikasu, ndipo nsonga ya lawi lamotoyo ndi yakuda. , pansi ndi wobiriwira, kufewetsa kumatha kutsukidwa, ndipo mumamva fungo lopweteka
Nthawi yotumiza: Feb-12-2022