He aha ka PET

Ma loko o ka honua o nā lula he ʻokoʻa nā mea synthetic. ʻO PET kekahi o lākou (Poly Ethylene Terephthalate). No ia i ka hui o polyesters a kahi ʻano o nā mea ea i hana ʻia mai ka ʻailaila. ʻAʻole maopopo ka poʻe he nui he aha ia PET. Ua ʻike ʻia e nā ʻepekema Pelekane ʻo Whinfield lāua ʻo Dickson, i ka makahiki 1941, nā mea nāna ia i palapala he polymer no ka hana ʻana i nā olonā. He mea maikaʻi loa i kēia lā.

No laila, e hoʻolaʻa mākou i kēia ʻatikala e haʻi iā ʻoe i ka PET, he aha kona ʻano a he aha ia.

He aha ka PET

Loaʻa i kēia mea nā ʻano aʻe, i lilo ia i mea pono a maikaʻi no ke kūkulu ʻana.

• Hana ʻia e ka puhi ʻana, ka hoʻokomo ʻana, ka extrusion. Kūpono no ka hana ʻana i nā hue, nā ʻōmole, nā kiʻi ʻoniʻoni, nā foil, nā pā a me nā ʻāpana.
• Transparency and gloss me ka hoʻonui ʻana i ka hopena.
• Maikaʻi loa mechanical pono.
• Pale ʻaukā.
• ʻO Bio-orientable-crystallizable.
• Sterilizable e gamma a me ethylene oxide.
• Kālā / hana.
• Hoʻonohonoho helu # 1 i ka hana hou.
• Māmā

Nā mea maikaʻi ʻole a me nā mea maikaʻi

E like me nā mea āpau, aia kekahi mau maikaʻi ʻole ma luna o PET. ʻO ka hoʻomaloʻo kekahi o kāna mau mea maikaʻi ʻole. Pono e hoʻomaloʻo i ka polyester āpau i mea e hōʻalo ai i ka nalo ʻana o nā waiwai. ʻO ka mānoanoa o ka polymer i ke komo ʻana i ke kaʻina he 0.005% ka nui loa. ʻO ke kumukūʻai o nā lakohana kekahi mea maikaʻi ʻole, e like me ka mahana. Hoʻolālā ʻia nā pono hana hoʻoheheʻe biologically oriented i kahi uku maikaʻi e pili ana i ka hana nui. I ka puhi ʻana a me ka extrusion, hiki ke hoʻohana ʻia nā lako pono PVC, i ʻoi aku ka nui o ka maʻalahi e hana i nā nui a me nā ʻano.

Ke piʻi ka mahana i nā kekelē 70, ʻaʻole hiki i ka polyester ke mālama i ka hana maikaʻi. Ua hoʻomaikaʻi ʻia i ka hoʻololi ʻana i nā pono hana e ʻae ai i ka hoʻopiha wela. ʻO ka crystalline (opaque) maikaʻi maikaʻi ke kūpale ʻana o ka PET, a hiki i ka 230 ° C. ʻAʻole i paipai ʻia no ka hoʻohana mau ʻana i waho.

I kēia manawa e kālailai mākou i nā mea e pono ai: loaʻa iā mākou nā waiwai kūikawā, loaʻa kūpono a me ka hana hou ʻana. Ma waena o kāna mau waiwai maikaʻi loaʻa iā mākou ka akāka, gloss, transparency, nā mea pale i nā kinoea a me nā mea ʻala, ka mana hopena, thermoformability, maʻalahi e paʻi me ka ʻīnika, e ʻae ai i ka kuke ʻana i ka microwave.

Ua emi iki ke kumukūʻai o PET ma mua o nā polymers ʻē aʻe e like me PVC-PP-LDPE-GPPS i nā makahiki he 5 i hala. I kēia lā, hana ʻia ʻo PET ma ʻAkau ʻĀkau a me ʻAmelika Hema, ʻEulopa, ʻAsia, a me ʻApelika Hema. Hiki ke hoʻopili hou ʻia ʻo PET e hana i kahi mea i kapa ʻia ʻo RPET. Minamina, ma muli o ke ana wela i ke kaʻina hana, ʻaʻole hiki ke hoʻohana ʻia ka RPET e hana i ka pīpī i ka ʻoihana meaʻai.

He aha nā mea e hoʻohana ai iā PET

Aia nā mea like ʻole i hana ʻia mai polyethylene terephthalate a i ʻole PET. Eia kekahi mau mea a me nā pono i hana ʻia me kēia thermoplastic recyclable:

• Nā ipu ea a me nā ʻōmole hiki ke hoʻohana hou ʻia. Hoʻohana ākea nā thermoplastics i ka hana ʻana i nā ipu a mea inu paha, e like me nā mea inu momona a me nā ʻōmole wai. Ma muli o ka paʻakikī a paʻakikī, ua lilo ia i mea hana i kēlā me kēia lā i ka ʻoihana ʻenehana. ʻOiai pili ia i ka mea hiki ke hoʻohana hou ʻia ia mea, ke ana e kōkua ia i ka hana ʻana i nā ʻōmole palekiko ʻē aʻe a me nā ipu i ana.
• Nā lole like ʻole. PET He ʻano pālolo ia i hoʻohana ʻia i ka ʻoihana lole e hana i nā lole ʻokoʻa. I ka ʻoiaʻiʻo, he pani pani maikaʻi loa ia no ka lilina a i ʻole ka pulupulu.
• Kiʻi ʻoniʻoni a kiʻi paʻi kiʻi paha. Hoʻohana ʻia kēia polymer ea e hana i nā kiʻi paʻi kiʻi like ʻole. ʻOiai, he mea maikaʻi loa no ka hoʻokumu ʻana i ka pepa paʻi X-ray maʻamau.
• Hana ʻia ka mīkini. I kēia lā, hoʻohana ʻia ka polyethylene terephthalate e hana i nā mīkini kūʻai like ʻole a me nā mīkini arcade.
• Nā papahana kukui. Hoʻohana ʻia ia e hana i nā kukui o nā hoʻolālā like ʻole. I ka ʻoiaʻiʻo, ua hōʻoia ʻo PET kekahi o nā mea nani loa i ka hoʻolālā kukui, i waho a i ʻole i loko.
• Nā mea hoʻolaha ʻē aʻe. ʻO kahi laʻana, nā pelaha a i ʻole nā ​​hōʻailona no ke kamaʻilio ʻike ʻana. Pēlā nō, hoʻohana pinepine ʻia ia ma ke ʻano he mea kūpono no ka hana ʻana i nā hōʻike i nā hale kūʻai a me nā hōʻike pāʻoihana like ʻole a hanana paha.
• Hoʻolālā i ka transparency a me ka maʻalahi: Ma muli o kēia mau ʻano ʻelua, hiki i nā mea kūʻai ke ʻike i loko o ka mea a lākou e kūʻai ai a loaʻa i nā mea hana i nā hanana hōʻike he nui.

ʻO nā ipu PET paʻa

Aia kekahi mau kumu nui e noʻonoʻo ʻia ai ka hūlū PET ʻoi aku ka lōʻihi o ka nohona. Eia nā kumu:

Kaʻai haʻahaʻa o ka ikehu a me nā kumuwaiwai no kāna hana ʻana

I loko o nā makahiki, ua hoʻemi ka hoʻomohala ʻana o ka ʻenehana i nā kumuwaiwai e koi ʻia ai e hana i ka hoʻopili PET a pū kekahi ua hoʻemi ʻia ka hoʻohana ʻana i ka ikehu i ke kaʻina hana. Hoʻohui, kona portability ʻo ia hoʻi e hoʻemi ʻia ke kumukūʻai a me ka hopena o ke kaiapuni i ka wā o ka lawe ʻana, no ka mea, ʻoi aku ka liʻiliʻi o ka overhead.

Ua hōʻike ʻia kekahi mau noiʻi, hoʻohālikelike ʻia i nā kumuwaiwai ʻē aʻe, hoʻoliʻiliʻi ka pīpī PET i ka wāwae kapona ma o ka hana ʻana i nā ʻōpala liʻiliʻi a emi iho ka ikaika o ka hana ʻana i nā pono hana.

ʻOi hou ka hana hou

Manaʻo nui ʻia hiki ke hana hou ʻia nā ipu PET i kekahi mau manawa, ʻo ka ʻoiaʻiʻo he kumuwaiwai ia e hiki ke hana hou ʻole ʻia inā hoʻokō ʻia kahi hana hoʻopōʻaiapuni kūpono, kaukaʻi ʻia i ke kumu e hoʻohana ai.

Ma kēia manawa, ʻO PET ka palika i hana hou ʻia i ka honuaI ka ʻoiaʻiʻo, i Sepania, 44% o ka ʻūpā ma ka mākeke e hoʻohana ʻia no ka hoʻohana lua. Pono e hoʻonui i kahi pākēneka i 55% i ka 2025 e kūlia i ka hoʻolālā hoʻokele waiwai i ʻae ʻia e ka European Commission.

Ma waho aʻe o ka hoʻohana hou ʻia ʻana ma ke ʻano he meaʻai, hoʻohana ʻia ka PET recycled i nā ʻoihana lole, kaʻa a me nā lako hana. Loaʻa iā ia ka palekana o ka hoʻohana ʻana i nā ipu PET i loko o ka meaʻai a me nā mea inu. Ua hōʻoia ka ʻĀina Palekana Mea ʻEulopa he mea palekana ia, a hoʻohana ʻia no ke kūʻai aku ʻana a me ka hoʻohana ʻana i nā mea maka e pili ana i ka PET i hana hou ʻia i loaʻa i ka wai a me nā mea inu ʻoluʻolu ma Sepania e Royal Decree 517/2013 ʻae ʻia e pono ka ipu hope loa ma kahi o 50% PET wahine puʻupaʻa.

No laila, hiki iā mākou ke hoʻoholo he palekana a kūpaʻa nā ipu PET no ke kaiapuni, ʻaʻole wale no ka nui o ka hiki ke hoʻohana hou ʻana, akā no ka maikaʻi o ka ikehu i ka hana hana. Lana koʻu manaʻo me kēia ʻike hiki iā ʻoe ke aʻo hou aʻe e pili ana i ka PET a me kona ʻano.