He aha ʻo PP Films?

NĀ WAIWAI

ʻO ka Polypropylene a i ʻole PP kahi thermoplastic haʻahaʻa ke kumukūʻai o ke ʻano moakāka kiʻekiʻe, ka ʻōlinolino kiʻekiʻe a me ka ikaika tensile maikaʻi. Loaʻa iā ia kahi kiko heheʻe kiʻekiʻe ma mua o ka PE, kahi e kūpono ai no nā noi e pono ai ka sterilization ma nā mahana kiʻekiʻe. Loaʻa iā ia ka noe liʻiliʻi a me ka ʻōlinolino kiʻekiʻe. Ma keʻano laulā, ʻaʻole maikaʻi nā waiwai sila wela o PP e like me ko LDPE. Loaʻa iā LDPE ka ikaika haehae ʻoi aku ka maikaʻi a me ke kūpaʻa hopena haʻahaʻa.

Hiki ke hoʻoheheʻe ʻia ka PP ʻo ia ka mea e hoʻomaikaʻi ai i nā waiwai pale kinoea no nā noi koi kahi e nui ai ke ola lōʻihi o ka papa o ka huahana.Nā kiʻiʻoniʻoni PPkūpono loa no nā ʻano hana like ʻole o nā ʻoihana, nā mea kūʻai aku, a me nā noi kaʻa.

Hiki ke hana hou ʻia ka PP a hiki ke hana hou ʻia i loko o nā huahana ʻē aʻe no nā ʻano hana like ʻole. Eia nō naʻe, ʻaʻole e like me ka pepa a me nā huahana cellulose ʻē aʻe, ʻaʻole hiki ke palaho ka PP. Ma ka ʻaoʻao maikaʻi, ʻaʻole hana ka ʻōpala PP i nā huahana ʻawahia a ʻino paha.

ʻO nā ʻano ʻelua koʻikoʻi loa, ʻo ia ka polypropylene unoriented cast (CPP) a me ka polypropylene biaxially oriented (BOPP). Loaʻa i nā ʻano ʻelua ka ʻōlinolino kiʻekiʻe, nā optics kūikawā, ka hana sila wela maikaʻi a maikaʻi loa paha, ʻoi aku ka maikaʻi o ke kūpaʻa wela ma mua o ka PE, a me nā waiwai pale makū maikaʻi.

Nā Kiʻiʻoniʻoni Polypropylene i Hoʻolei ʻia (CPP)

ʻO ka Polypropylene i hoʻolei ʻole ʻia (CPP) ma ke ʻano laulā he liʻiliʻi ka nui o nā noi ma mua o ka polypropylene i hoʻonohonoho ʻia ma ke ʻano biaxially (BOPP). Eia nō naʻe, ke piʻi mau nei ka CPP ma ke ʻano he koho maikaʻi loa i nā ʻōpala maʻalahi kuʻuna a me nā noi ʻole. Hiki ke hoʻopilikino ʻia nā waiwai kiʻiʻoniʻoni e hoʻokō i nā koi kikoʻī o ka ʻōpala, ka hana, a me ka hana ʻana. Ma keʻano laulā, ʻoi aku ka kiʻekiʻe o ke kūpaʻa ʻana o ka CPP i ka haehae a me ka hopena, ʻoi aku ka maikaʻi o ka hana anuanu a me nā waiwai sila wela ma mua o ka BOPP.

Nā Kiʻiʻoniʻoni Polypropylene i Hoʻonohonoho ʻia ma ke ʻAno Biaxial (BOPP)

ʻO ka polypropylene i hoʻonohonoho ʻia ma ke ʻano biaxially a i ʻole BOPP1 ka ʻili polypropylene koʻikoʻi loa. He koho maikaʻi loa ia no ka cellophane, ka pepa waxed, a me ka pepa alumini. Hoʻonui ka hoʻonohonoho ʻana i ka ikaika tensile a me ka paʻakikī, hoʻohaʻahaʻa i ka elongation (paʻakikī ke kīkoʻo), a hoʻomaikaʻi i nā waiwai optical, a hoʻomaikaʻi iki i nā waiwai pale mahu. Ma keʻano laulā, ʻoi aku ka ikaika tensile o BOPP, ʻoi aku ka modulus (stiffness) kiʻekiʻe, haʻahaʻa ka elongation, ʻoi aku ka maikaʻi o ka pale kinoea, a haʻahaʻa ka haze ma mua o CPP.

NĀ PALAPALA NOI

Hoʻohana ʻia ka ʻili PP no nā hana hoʻopili maʻamau e like me ka cigarette, candy, snack a me nā ʻōwili meaʻai. Hiki ke hoʻohana ʻia no ka shrink wrap, tape liners, diapers a me ka sterile wrap i hoʻohana ʻia i nā hana lapaʻau. No ka mea, he awelika wale nō nā waiwai pale kinoea o PP, ua uhi pinepine ʻia me nā polymers ʻē aʻe e like me PVDC a i ʻole acrylic e hoʻomaikaʻi nui ana i kona mau waiwai pale kinoea.

Ma muli o ke ʻala haʻahaʻa, ke kūpaʻa kemika kiʻekiʻe a me ka inertness, kūpono nā ʻano PP he nui no nā noi hoʻopili ma lalo o nā lula FDA.