ʻO ka hoʻomohalaʻana i nā pale pale pepa

ʻO ka Valt Valve ka mea nui i hoʻohana nuiʻia, he pono nā mea pono o ka corrosio, nā mea palekana, nā mea palekana a me nāʻoihana kaiāulu. ʻO kēia ka mea e pili ana i ka mōʻaukala hoʻomohalaʻana i nā huapalapala o nā huapalapala.

I nā makahiki 1950, me ka hoʻomohala wikiwikiʻana o kaʻoihana kemika, ke koi no nā vale i hoʻonuiʻia. I kēia manawa, ua hoʻohana nuiʻia nā huahana plastic i ke kahuaʻoihana, no laila ua hoʻomaka kekahi mau meaʻenehana e noi pehea e noi ai i nā mea waiwai i ka hanaʻana i nā mea pālani. ʻO nā Velu maʻamau ka mea i hana nuiʻia e hoʻohana ana i nā hoʻopili peliaʻole (PVC) he mea maikaʻiʻole a kūpono wale nō ka hanaʻana no ke aniani haʻahaʻa a me kaʻano hana haʻahaʻa.

I nā makahiki 1960, me ka hoʻomohala mauʻana i kaʻenehana plastics, polyprostlonene Loaʻa kēia mau mea i nā waiwai mechaninsinies a me ka paleʻana o ka corrosion, a hiki ke hoʻololi i kahi o nā wahi hana o nā hana hana.

I nā makahiki 1970, me ka Maluhia o kaʻenehana Valve Valve Valve Hoʻoponopono i nā koi e koi ai i ka hana hana.

I ka hoʻomakaʻana o ka kenekulia 21 I kēia manawa, ua hoʻohanaʻia kekahi mau lako pepa hou i ka pystelse, e like me ka pointHeatHeane (PekopaʻAmelika Hui PūʻIa. Loaʻa kēia mau mea i nā mea waiwai maikaʻi loa a me ka paleʻana o ka paleʻana, a hiki ke hoʻokō i nā koi e koi aku ana i ka hana hana.

I ka pōkole, me ka hoʻomohalaʻana o kaʻoihana kemika a me ka hoʻomau mauʻana o nā mea waiwai o ka plastics. noi, e lilo ana i mea nui a me nā mea waiwai nui a me nā mea waiwaiʻole no ka mea kanu, petrochemical a me nāʻoihana palekana palekana a me nāʻoihana.