M'mafakitale amakono opangira zinthu komanso zonyamula katundu, filimu yotambasula yakhala chinthu chofunikira kwambiri poteteza katundu chifukwa cha kutambasula kwake, kukana kuphulika komanso kukana chinyezi. Komabe, pali mitundu yambiri yazinthu zotambasulira filimu pamsika, komanso momwe mungasankhire zinthu zoyenera zakhala chidwi kwambiri kwamakampani. Nkhaniyi iwunika zinthu zofunika kwambiri pakusankha zida zamakanema otambasulira kuchokera kuzinthu zakuthupi, mawonekedwe ogwiritsira ntchito komanso zofunikira zoteteza chilengedwe.
Polyethylene (PE) zakuthupi: kusankha kwakukulu
Polyethylene (PE) ndiye filimu yodziwika kwambiri pamsika, yomwe imagawidwa mu low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) ndi high-density polyethylene (HDPE). Mwa iwo, LLDPE yakhala chisankho chomwe chimakondedwa ndi makampani ambiri chifukwa champhamvu zake zolimba komanso kulimba mtima. Ndizoyenera kulongedza katundu wolemera, monga zomangira, zinthu zachitsulo, ndi zina zotero, ndipo zimatha kuteteza kumasula ndi kusweka panthawi yoyendetsa.
LDPE ndiyoyenera kulongedza zinthu zopepuka, monga chakudya, zofunika zatsiku ndi tsiku, ndi zina zambiri, zofewa bwino, koma zolimba zocheperako. Zinthu za HDPE zili ndi kuuma kwakukulu ndipo ndizoyenera kuyika zinthu zomwe zimafuna kukhazikika, koma zimakhala ndi kusinthasintha kosasinthika, komwe kungakhudze kulimba kwa phukusi.
PVC zakuthupi: kugwiritsa ntchito muzochitika zinazake
Filimu yokulunga ya Polyvinyl chloride (PVC) idagwiritsidwapo ntchito kwambiri chifukwa chotsika mtengo, koma magwiridwe ake achilengedwe ndi otsika, komanso kutambasuka kwake komanso kukana kubowola sikuli bwino ngati zinthu za PE. M'zaka zaposachedwa, ndi kulimbikitsidwa kwa malamulo oteteza chilengedwe, kugwiritsa ntchito zipangizo za PVC kwachepa pang'onopang'ono, koma m'mafakitale ena apadera, monga makina opangira zida zamagetsi, palinso kufunikira kwa msika.
Chitetezo cha chilengedwe ndi kubwezeretsedwanso: zomwe zidzachitike m'tsogolo
Ndikusintha kwa chidziwitso cha chilengedwe padziko lonse lapansi, zida zamakanema zowonongeka komanso zobwezerezedwanso zakhala gawo lalikulu pamsika. Kafufuzidwe ndi kakulidwe ka bio- zochokera ku PE ndi mapulasitiki owonongeka (monga PLA) amapereka njira zatsopano zopakira zosunga zachilengedwe. Zinthu zamtunduwu zimatha kuwola m'malo achilengedwe, kuchepetsa kuipitsidwa kwa chilengedwe, kukwaniritsa miyezo yapadziko lonse lapansi yazachilengedwe, ndipo ndizoyenera kwambiri kugulitsa{3}}mabizinesi omwe akufuna kutumiza kunja.
Mapeto
Kusankhidwa kwazinthu zomangira filimu kumafunika kuganizira mozama za zonyamula katundu, mikhalidwe yonyamula katundu ndi zofunikira zoteteza chilengedwe. Zinthu za PE zikadali zomwe zikukula pamsika chifukwa chakuchita bwino kwambiri, komanso kukwera kwa zinthu zoteteza zachilengedwe kumapereka njira yatsopano yopangira makampani. Mabizinesi akuyenera kusankha filimu yokulungidwa yoyenera malinga ndi zomwe akufuna kuti athe kulongedza bwino ndikuchepetsa{2}}mitengo yanthawi yayitali.
