Palekana
Hoʻohana nui ʻia ka PET -meaʻai i ka ʻeke meaʻai a me ka mea inu a ʻike nui ʻia no kona palekana a paʻa. ʻAʻole ia e hoʻokuʻu i nā mea ʻino a hoʻokō i nā kūlana palekana meaʻai honua, e hiki ai i nā mea kūʻai ke hoʻomaha i ka wā e hoʻohana ai. Eia naʻe, hoʻokahi mea e pono ai ka nānā kūikawā: Hiki i ka PET ke hoʻokuʻu i kekahi mau mea ʻino, e like me DEHP+, ma lalo o nā kūlana wela kiʻekiʻe. No laila, i ka hoʻohana ʻana i nā ipu PET, e mālama pono e pale i nā wela kiʻekiʻe e pale ai i ka hoʻokuʻu ʻana i nā mea ʻino.
Aia ka -papa meaʻai PP ma nā wahi a pau o ko mākou ola i kēlā me kēia lā, e like me nā pahu mālama - hou ma nā hale kūʻai kūʻai kūʻai nui a me nā pahu ʻaina awakea microwave, a ua hana ʻia ka nui o ia mau mea me ka PP. No ke aha i kaulana ai? ʻO ka mea mua, ʻaʻole-ʻona kēia mea, ʻono a ʻala ʻole, no laila palekana loa ke hoʻohana. Ma waho aʻe, loaʻa iā ia ka pale wela maikaʻi loa a hiki ke hoʻokomo ʻia i loko o ka microwave e hoʻomehana ai i ka meaʻai me ka pilikia ʻole. ʻAʻole ia e hoʻopōʻino i ka wā e wela ai e like me kekahi mau plastic a hoʻokuʻu paha i nā mea ʻino. I kēia manawa, maikaʻi nō hoʻi kona kūpaʻa kemika. Ma lalo o ka hoʻohana maʻamau, ʻaʻole maʻalahi ka hana ʻana me nā mea ʻē aʻe.
ʻO ka mea nui aku, ʻaʻole pono ka mea PP i ka hoʻohui ʻana i nā mea ʻino i ka wā o ke kaʻina hana. Ma lalo o nā kūlana wela kiʻekiʻe, ʻaʻole ia e hoʻoheheʻe i ka bisphenol A*, he mea hoʻopōʻino i ke kino o ke kanaka. ʻO ia ka mea ʻoi aku ka palekana o ka papaʻaina a i ʻole ka ʻeke i hana ʻia me ka mea PP a kūpono hoʻi no ka mālama ʻana i ka meaʻai. No laila, i ke koho ʻana i ka ʻeke meaʻai a i ʻole ka papa ʻaina, hiki ke hāʻawi ʻia nā mea PP i ka mea nui. Ma hope o nā mea a pau, hele mua ka palekana.
ʻAlohilohi
ʻO ka meaʻai-māmā PET mea he māliko kiʻekiʻe loa, e ʻae iā ʻoe e ʻike i ka meaʻai i loko me ka maka, a hōʻike maopopo ʻia ke ʻano a me ka maikaʻi. No laila, kūpono loa ia no ka hoʻohana ʻana i ka ʻeke e pono ai e hōʻike i ka meaʻai, e like me nā ʻōmole inu a mākou e inu pinepine ai, a me nā kini meaʻai no nā kuki a me nā lole. Hana ʻia ka hapa nui o kēia mau pūʻolo me PET. No ke aha e hoʻohana ai? No ka mea makemake ka poʻe kālepa e hōʻike i ka ʻaoʻao maikaʻi loa o kā lākou huahana i nā mea kūʻai aku a hoʻowalewale iā lākou e kūʻai. Eia kekahi, ʻaʻole ʻike wale kēia ʻano o ka paʻi ʻana i ka hou a me ka maʻemaʻe, akā pale pū kekahi i ka meaʻai i kekahi ʻano, e pale ana i ka pulu a me ka deforming, e hōʻoia ana i ka loaʻa ʻana o ka meaʻai i nā lima o nā mea kūʻai aku i loko a maikaʻi.
He haʻahaʻa haʻahaʻa ka ʻike maka o ka -papa meaʻai, he translucent maʻamau. ʻOiai he haʻahaʻa haʻahaʻa kāna transmittance, he ākea ka nui o nā noi. E lawe i ka pahu yogurt no ka laʻana. ʻO ka mea translucent PP e hiki ai i nā kānaka ke ʻike maopopo i ke ʻano mānoanoa o ka yogurt, ʻoiai e waiho ana i kahi manaʻo pohihihi no ka huahana. Aia kekahi mau pā i ʻike pinepine ʻia ma nā hale kūʻai. He laʻana maʻamau nā pā ʻiʻo hou. ʻO nā pāpaʻi i hana ʻia me ka mea PP, ʻaʻole naʻe-kūʻokoʻa a maʻemaʻe hoʻi ko lākou ʻano translucent. ʻO ka hoʻohana ʻana i nā mea PP e hana i nā pahu meaʻai a me nā pā ʻaʻole hiki ke hoʻokō wale i nā pono akā e hōʻoiaʻiʻo pū i ka palekana o ka meaʻai.
Kūleʻa wela
He hi'ohi'ona nui ka pale 'ana i ka wela o ka PET -mea'ai. ʻOiai ʻaʻole hiki ke pale i nā wela kiʻekiʻe. Ke piʻi ka mahana i 70-80 degere, e hoʻopōʻino ka ʻili o ka pahu PET a nalowale kona ʻano kumu. No laila, ʻaʻole kūpono ka PET -meaʻai no ka hoʻohana ʻana i nā kūlana i makemake ʻia ai ka hoʻomaʻemaʻe ʻana a i ʻole ka wela wela. No ka laʻana, i ke kaʻina hana meaʻai, he mea ʻole ia i kekahi mau loulou e koi ana i ka paʻi kiʻekiʻe-mehana a me ka sterilization. Inā hoʻohana ʻia ka ʻeke PET e hoʻopaʻa i ka wai wela, e maʻalahi ka hoʻololi ʻana, e hopena i ka pōʻino a i ʻole hiki ke hoʻohana ʻia. No laila, i ke koho ʻana i nā mea hoʻopihapiha, he mea nui e noʻonoʻo pono i nā koi wela o ka hoʻoili ʻana i ka meaʻai e pale aku i nā pilikia i hoʻokumu ʻia e ka nele o ka pale wela.
Loaʻa i ka ʻai-papa PP ka wela maikaʻi loa, e ʻae i ka mahana ma waena o 110 degere a me 120 degere. ʻO ia wale nō ka plastic i hiki ke hoʻomaʻamaʻa pololei ʻia i loko o ka microwave, he mea kūpono loa. Inā makemake ka meaʻai i ka -hoʻomaʻamaʻa wela a i ʻole ka hoʻomehana ʻana ma mua o ka hoʻopaʻa ʻana, ʻoi aku ka maikaʻi o ka pāpaʻi PP. ʻO ka nui o nā pahu mālama meaʻai a mākou e hoʻohana pinepine ai no ka ʻai ʻana, a me kēlā mau pahu wela -a-ʻai i kūʻai ʻia ma nā hale kūʻai kūʻai, ua hana ʻia me ka PP. ʻO ka hoʻohana ʻana iā ia e paʻa i ka meaʻai a me ka wela i loko o ka microwave he mea maʻalahi a palekana. ʻAʻohe pono e hopohopo e hoʻoheheʻe a hoʻokuʻu paha i nā mea ʻino. He mea maʻalahi kēia i ke ola o kēlā me kēia lā.
Ke kūʻē kemika
Hiki ke hoʻomanawanui i ka ʻakika a me ka alkalina ka PET kiʻekiʻe meaʻai a hiki ke hoʻokō i nā kaiapuni ʻakika a alkaline i ka meaʻai i kēlā me kēia lā. Akā inā ʻike ʻoe i nā mea hoʻoheheʻe ikaika a i ʻole nā mea hoʻoheheʻe organik, ʻaʻole ia e hana. No ka laʻana, hiki i nā mea oxidizer ikaika e like me ka bleach a me ka disinfectant, a me nā mea like me ka peni thinner, hiki ke hoʻopōʻino i ka PET ma hope o ka hoʻopili ʻana, e hoʻoheheʻe ʻia, deformed, a pohō paha. No laila, i ka wā e hoʻopaʻa ai i ka meaʻai, ʻoi aku ka maikaʻi o ka mālama ʻana mai kēia mau mea i mea e hōʻoia ai i ka pono o ka ʻeke a me ka palekana o ka meaʻai.
Hāʻawi ka -papa meaʻai PP i ka paʻa kemika maikaʻi loa a ʻaʻole hiki ke hoʻololi i ka hapa nui o nā kemika, koe naʻe nā mea hoʻonanea ikaika. He mea kaulana kēia mea i nā meaʻai a me nā ʻoihana ʻoihana. No ka laʻana, kūpono nā pahu meaʻai a me nā pahu ʻaina microwave no ka mālama ʻana i ka meaʻai, me ka mālama ʻana i ka pale ʻana mai ka hoʻouka kaua. Aia kekahi mau ʻāpana kemika ʻenehana i hiki ke hana ʻia me ka mea PP inā ʻaʻole ikaika loa ka acidity a i ʻole alkalinity. Loaʻa iā ia ka hoʻohana ʻana i ka hoʻopili ʻana o nā mea hoʻonaninani a me nā huahana hoʻomaʻemaʻe, e pale ana i nā ʻāpana kemika i loko mai ka pane ʻana me ka mea hoʻopihapiha a me ka hōʻoia ʻana i ka maikaʻi o ka huahana. I ka pōkole, ʻoiai ʻaʻole ia e hālāwai me nā oxidants ikaika, hiki i ka mea PP ke paʻa paʻa a he koho maikaʻi ia no ka hoʻopili ʻana e kūʻē i ka erosion kemika.
Hana hana
Paʻakikī loa ka hana ʻana i ka PET -meaʻai. Pono e hoʻomaloʻo ʻia ma mua o ka hoʻoheheʻe ʻia ʻana. Inā ʻaʻole maloʻo loa, hiki ke maʻalahi nā hemahema i ka wā o ka hana ʻana, e like me nā ʻōpala a i ʻole nā mea haumia ma ka ʻili o ka huahana. Eia kekahi, paʻakikī loa ka PET i ka hana ʻana, a ʻoi aku ka paʻakikī o nā mea hana a me nā koi i ka wā o ka hana. Ke alakaʻi pololei nei kēia i kāna kumukūʻai hana ʻoi aku ka kiʻekiʻe ma mua o kekahi mau mea plastic. No laila, ʻoi aku ka maʻamau o nā huahana PET. ʻOiai naʻe, hoʻohana nui ʻia ia i ka hoʻopili ʻana e like me nā hue inu a me nā pahu mālama meaʻai, ʻoi loa ma muli o kāna hana maikaʻi, kiʻekiʻe kiʻekiʻe, hiki ke hōʻike i ka meaʻai, a me ka palekana.
He maikaʻi loa ka hana hoʻoponopono ʻana i ka meaʻai- PP a hiki ke hoʻololi maʻalahi i nā ʻenehana hana paʻakikī like ʻole, e like me ka hoʻoheheʻe ʻia ʻana, extrusion, a me ka hoʻoheheʻe ʻana, hiki iā ia ke hoʻopau maikaʻi loa. I ka wā o ke kaʻina hana, ʻaʻole koi ʻo PP i nā mea hana like ʻole a me nā koina kaʻina e like me kekahi mau plastics ʻē aʻe, a ʻoi aku ka maʻalahi o ka hoʻoheheʻe ʻana, e hopena i ke kumu kūʻai haʻahaʻa haʻahaʻa. ʻO ka hopena, mahalo nui ʻia ka ʻai-ka PP ma ka ʻoihana paʻi. No ka laʻana, hana ʻia ka nui o kā mākou pahu meaʻai i kēlā me kēia lā a me nā kīʻaha yogurt i hana ʻia me ka PP. Me ke kumu kūʻai haʻahaʻa, ka maikaʻi maikaʻi a me ka hiki ke hoʻokō i ka koi o ka mākeke, ʻaʻole ia he mea kupanaha he wahi kona i ka māla meaʻai.
Nā Kūlana kūpono
ʻOi aku ka maikaʻi o ka PET -meaʻai no ka ʻeke e hōʻike i ke ʻano o ka meaʻai akā ʻaʻole pono ke kū i nā wela kiʻekiʻe. Loaʻa iā ia ka māliko a hiki ke hōʻike maopopo i ke ʻano a me ka maikaʻi o ka meaʻai. He kūpono loa ia no ka hoʻopili ʻana e like me nā ʻōmole inu a me nā kini meaʻai māmā e koi ana i nā mea kūʻai aku e ʻike pololei i nā mea i loko. Akā naʻe, ʻaʻole maikaʻi kāna hana ma nā wela kiʻekiʻe, a ʻano maʻamau kona ʻili ma 70-80 degere, no laila ʻaʻole kūpono ia no ka hoʻopili ʻana i nā mea inu wela a me nā meaʻai wela. Inā makemake ʻia ka sterilization kiʻekiʻe a me ka hoʻomehana ʻana, ʻaʻole kūpono ʻo PET.
ʻO ka papa meaʻai PP he mea pono loa, kūpono loa no ka hoʻopili ʻana e pono ai ke pale aku i ka hoʻouka kemika a no nā meaʻai hau. No ka laʻana, ʻo ka nui o kā mākou pahu meaʻai maʻamau, nā pā, a me nā ipu hoʻomehana microwave i hana ʻia me PP. He kūpaʻa kemika maikaʻi loa ka PP a ʻaʻole ia e pane me ka hapa nui o nā kemika koe wale nō nā oxidants ikaika, e palekana loa ia no ka hoʻopili ʻana i ka meaʻai. Kūleʻa ʻo PP i nā haʻahaʻa haʻahaʻa, no laila hiki ke hoʻokomo ʻia nā meaʻai maloʻo i loko me ka ʻole o ka palupalu a i ʻole nā mea ʻē aʻe. Inā makemake ʻoe e wela, hiki ke hoʻokomo pololei ʻia ka ipu PP i loko o ka microwave, kahi kūpono a wikiwiki hoʻi. I ka pōkole, ʻo ka PP he "mea holoʻokoʻa" ʻoiaʻiʻo ma ke kahua o ka ʻeke meaʻai a kūpono loa i kēia mau hiʻohiʻona.
Palekana kaiapuni
ʻOiai he maikaʻi ka hana kaiapuni o ka ʻai-māmā, hiki ke hoʻohui ʻia kekahi mau mea hoʻohui e like me nā catalysts a me nā antioxidants i ka wā o ka hana. Hiki i kēia mau mea hoʻohui ke neʻe a kahe i waho i ka wā -hoʻohana lōʻihi, no laila e pili ana i ka palekana o ka meaʻai. No ka laʻana, ʻo nā mea hoʻoheheʻe i hoʻohana ʻia i ka hopena polycondensation o PET (e like me ka antimony trioxide +) a me nā -huahana i hana ʻia e ka hopena (e like me ka acetaldehyde) he mea ʻawaʻawa a loaʻa nā pilikia o ka neʻe ʻana. No laila, i ke koho ʻana i ka PET ma ke ʻano he meaʻai meaʻai meaʻai, ʻo ka nui o nā mea hoʻohui i hoʻohana ʻia a me kā lākou mau palena neʻe e pono e hoʻopaʻa paʻa ʻia e hōʻoia i ka hoʻokō ʻana i nā kūlana palekana meaʻai.
Hāʻawi ka ʻai-papa PP i ka hana kaiapuni maikaʻi loa, ʻaʻole hoʻokuʻu i nā kinoea ʻino i ka wā e hoʻohana ʻia ai, a liʻiliʻi ka hopena i ke olakino kanaka. He mea paʻa palekana palekana a kūpono loa ia no ka ʻeke meaʻai. No ka laʻana, hana ʻia ka nui o kā mākou pahu meaʻai maʻamau a me nā pahu ʻaina awakea microwave i hana ʻia me PP. Ke hoʻohana ʻoe ia mea no ka mālama ʻana i ka meaʻai, inā ʻoe e hoʻoinu ai a hoʻomehana paha, ʻaʻole pono ʻoe e hopohopo no ka hoʻokuʻu ʻana i nā mea ʻino. Eia kekahi, maʻalahi ka mālama ʻana i nā mea PP ma hope o ka hoʻolei ʻia ʻana a ʻaʻole ia e hoʻokau i ka ukana kaumaha ma ke kaiapuni e like me nā plastics. No laila, hoʻohana nui ʻia ʻo PP i ka ʻeke meaʻai a me nā mea e pono ai i kēlā me kēia lā, a ʻoluʻolu nā mea a pau me ia.
Ka hopena
Inā makemake ʻoe e hōʻike i ke ʻano a me ka maikaʻi o ka meaʻai a pono ʻoe e kū i nā kūlana wela kiʻekiʻe, ʻaʻole kūpono paha ka meaʻai -mea meaʻai PET no ka mea he maʻalahi ka hoʻololi ʻana o ka PET i nā wela kiʻekiʻe. Manaʻo ʻia e koho i nā mea ʻē aʻe i kūpono i nā mahana kiʻekiʻe. Eia naʻe, he kiʻekiʻe ka ʻike o ka PET a maikaʻi loa no ka hōʻike.
Inā pono ʻoe e pale aku i ka hoʻoheheʻe ʻana a me ka hoʻopaʻa ʻana i ka meaʻai maloʻo i ka manawa like, he koho maikaʻi ka meaʻai-papa PP. He kūpaʻa kemika maikaʻi ʻo PP a kū i nā wela haʻahaʻa. Hiki ke hoʻohana ʻia no ka hoʻomehana microwave, kahi kūpono loa.
Loaʻa i ka -meaʻai ka PET a me ka PP ko lākou mau hiʻohiʻona ponoʻī: He kiʻekiʻe ka māliko ʻana o ka PET akā ua kaupalena ka pale wela; He maikaʻi ka pale wela o ka PP a me ke kūpaʻa kemika, akā ʻaʻole maikaʻi ka ʻike, no laila i ke koho ʻana, pono ʻoe e hoʻoholo e pili ana i nā hiʻohiʻona noi kikoʻī a me nā pono, i hiki iā ʻoe ke koho i nā mea kūpono loa.
