E mepụtara ihe nkiri stretch, nke a makwaara dị ka ihe nkiri stretch na ihe nkiri heat shrink, na China na mbụ site na iji PVC dị ka ihe ndabere na DOA dị ka ihe na-eme ka plastik na mmetụta nke onwe ya nke ihe nkiri stretch PVC. N'ihi nsogbu gburugburu ebe obibi, ọnụ ahịa dị elu (ma e jiri ya tụnyere PE, obere mpaghara nkwakọ ngwaahịa kwa otu) na enweghị ike ịgbatị, a kwụsịrị ihe nkiri PE mgbe mmepụta obodo malitere na 1994-1995. Ihe eji eme ya bụ LLDPE, gụnyere C4, C6, C8 na metallocene PE (MPE).
Atụmatụ
A na-emepụta ya site na iji resin LLDPE na ihe mgbakwunye pụrụ iche nke tackifier nke e si mba ọzọ nweta, ọ nwekwara ike imepụta ihe nkiri na-agbagharị agbagharị dị iche iche maka aka, igwe ụdị iguzogide, igwe ụdị tupu agbatị, mgbochi UV, mgbochi static na mgbochi nchara. O nwere uru ndị a:
1. Site na iji ngwa co-extrusion nke nwere oyi akwa abụọ, ihe nkiri a na-agbanye agbagharị nwere ike ime ka njirimara nke polima ọ bụla dịkwuo elu, nghọta ya, ike nrụgide ya, na iguzogide oghere, na-eru ọnọdụ kacha mma n'ebe agbaze.
2. O nwere ezigbo ihe ndị na-eme ka ọ sie ike, ọ na-eme ka ọ doo anya nke ọma, ọ na-adịkwa otu ọkpụrụkpụ.
3. O nwere ogologo ogologo, ezigbo ike iguzogide anya mmiri, ezigbo ike ndọda kwụ ọtọ, yana ezigbo ụkwụ na-arapara onwe ya.
4. Ọ bụ ihe a na-emegharị emegharị nke na-anaghị emebi gburugburu ebe obibi, ọ naghị atọ ụtọ, ọ naghị egbu egbu, a pụkwara iji ya mee nri a kwadebere ozugbo.
5. nwere ike imepụta ngwaahịa nrapado otu akụkụ, belata mkpọtụ a na-enye n'oge usoro ịgbagharị na ịgbatị, belata uzuzu na ájá n'oge njem na nchekwa.
Ngwa
1. Nkwakọ ngwaahịa emechiri emechi
Ụdị nkwakọ ngwaahịa a yiri nkwakọ ngwaahịa ihe nkiri a na-ebelata, ebe a na-ekpuchi ihe nkiri ahụ gburugburu pallet iji kechie ya niile, wee jiri ihe mkpuchi ọkụ abụọ mechie ihe nkiri ahụ na nsọtụ abụọ ọnụ. Nke a bụ ụdị ihe nkiri a na-emechi emechi mbụ e ji mee ihe ma duga n'ịmepụta ọtụtụ ụdị nkwakọ ngwaahịa ndị ọzọ.
2. Nkwakọ ngwaahịa obosara zuru oke
Ụdị nkwakọ ngwaahịa a chọrọ ka ihe nkiri ahụ buru ibu nke na ọ ga-ekpuchi pallet ahụ, nke nwere ọdịdị nkịtị, ya mere ọ dabara adaba maka ojiji ya na ọkpụrụkpụ ihe nkiri nke 17 ruo 35μm.
3.Nkwakọ ngwaahịa aka
Ụdị nkwakọ ngwaahịa a bụ ụdị nkwakọ ngwaahịa ihe nkiri mkpuchi kachasị mfe, nke a na-etinye na shelf ma ọ bụ site n'iji aka, site na ntụgharị pallet ma ọ bụ ihe nkiri gburugburu pallet. A na-ejikarị ya eme ihe n'ịkwakọghachi pallet ndị a kpuchiri ekpuchi mgbe ha gbajiri, yana nkwakọ ngwaahịa pallet nkịtị. Ụdị nkwakọ ngwaahịa a na-adị nwayọ, ọkpụrụkpụ fim kwesịrị ekwesị dịkwa site na 15 ruo 20 μm.
