ʻO ke kūlana ʻenehana i kēia manawa a me ka manaʻo mākeke o nā kini meaʻai me ka uhi maʻalahi

ʻO ka meaʻai hiki ke ʻai, palekana, ʻoluʻolu, ʻo ia ka meaʻai kūpono loa.Akā, ʻoiai ua paʻa piha nā kini i nā makahiki i hala iho nei, ua koho ʻia nā kini aniani mai nā ʻōmole kūleʻa o ke ʻano ʻo Suzhou, e hoʻolaha ana i ka ʻōlelo "ʻono ke kini a paʻakikī ka waha e wehe".ʻO ia ka nīnau nui.ʻAʻole maʻalahi nā mea kūʻai aku e ʻai, me ka hopena koʻikoʻi i ka hoʻomohala ʻana i ka ʻoihana canned.I kēia manawa ka hoʻolaha ikaika ʻana o ka ʻoihana hiki, nā kini tinplate me kahi poʻi maʻalahi e wehe, nā kini aniani me ka uhi ʻole.ʻOi aku ma mua o ʻumi makahiki i hala aku nei, nui ka poʻe i koho e hoʻohana i nā poʻi maʻalahi, ʻo ia hoʻi nā kini o ka porridge waiwai ʻewalu.ʻO ka lalo o ke kino o ke kini i ʻumeke ʻia.Ua hana ʻia nā poʻi maʻalahi me ka alumini alumini a ua hoʻopili ʻia me kahi puna plastik liʻiliʻi.Maikaʻi loa ka meaʻai a ʻoluʻolu loa ka poʻe kūʻai aku, i kēia manawa, ʻo ka nui o ke kūʻai ʻana o ka pudding laiki i kēlā me kēia makahiki ma kahi o 300,000 tons.

Eia naʻe, ʻaʻole hiki ke hoʻohālike ʻia nā ʻano meaʻai hiki ke kohoipu meaʻai plastik me ka poʻi wehe maʻalahi.I nā makahiki i hala iho nei, ua hana kahi hale hana meaʻai canned ma Guangdong i nā kini wai tōmato.Ua hana ʻia nā kini me ka hao a me ke alumini alumini me nā poʻi maʻalahi e huki, a ʻo nā mea i loko he 0.5% sodium chloride (NaCl) .Ua helu ʻia ka maʻiʻo chlorine he 303 mg/kg, ma hope o kekahi mau mahina o ka mālama ʻana, ua koi ʻia ka hana e hoʻōki ma muli o ka hoʻokuʻu ʻana o nā pahu i ka rivet a me ka laina o nā poʻi maʻalahi.

Hoʻohana ʻia ka tinplate ma lalo o ke kino hiki.Inā hana ʻia ke poʻi o ke kini me ke alumini alumini, ua hana ʻia kahi micro-battery ma hope o ka ʻai ʻia ʻana o ka meaʻai, a loaʻa kahi hopena bimetallic.ʻO ka alumini ka anode a ʻo ka tin ka cathode.Ke ʻoi aku ka nui o ka ʻāpana cathode ma mua o ka ʻāpana anode, ʻo ka ʻāpana anode o ka hoʻouka ʻana i ka lua hohonu, a hiki i ka perforation.I kekahi mau makahiki i hala aku nei, ua hana ʻia ka ipu inu niu kaulana ma Taiwan me ka alumini alumini me ka uhi maʻalahi a me ka tinplate ma lalo o ke kini.ʻO ka nui o nā ion chloride i loko o nā mea i hiki i ka 440 ~ 1492 mg / kg, Ph = 4.4 ~ 4.6, ka nui o ka malic acid.I ka wā mua o Canning, hoʻopiha nā ʻāpana corrosive (malic acid, chloride ion) i ke kiʻi uhi a hoʻokō i ka hopena electrochemical.I kēia manawa, ʻo ke kiʻi ʻoniʻoni he cathode, ua hōʻino ʻia ke kiʻi ʻoniʻoni e ka kiʻiʻoniʻoni i hōʻike ʻia i ka tin, ka hao no ka anode, a hiki i ka wahi kūpono o ka tin, ka hao i ʻike ʻia, a me ka alumini maʻalahi e huki i ka uhi ma muli o ka pōʻino o ke kaula alumini. hui pū e hana i micro-battery, no ka pane bimetallic.I kēia manawa, alumini no ka anodic hoʻouka corrosion dissolution, i hui pū me ke alo o ka chloride ion i loko o ka maʻiʻo, paipai corrosion pane e hoʻokēʻai i ka hoʻomohala ʻana o ka alumini hao maʻalahi-huki pāpale rivet, laina perforation.

Ua hōʻike ʻia aia kekahi mau meaʻai waikawa kiʻekiʻe i loko o nā ion chloride ma mua o 100mg/kg, me ka ʻiʻo canned, ka moa a me nā mea kanu wai (ma muli o ka lawe ʻana i ka paʻakai a i ʻole ka sodium chloride), hoʻohana ʻia ka tinplate no ka lalo o ke kino hiki. ʻAʻole kūpono ke alumini alumini no ka uhi o ka pahu, pono e hoʻohana maʻalahi i ka tinplate e huki i ke poʻi, e pale aku i ka hopena o ka bimetallic electrochemical reaction a me ka perforation.