Ibikoresho byo mu ijosi

Urwibutso rushyushye
Warm memory foam yakozwe mu myaka ya za 1960 na Healthman, ishami rya NASA. Igaragaza imiterere ifunguye - kandi ifite imiterere yumutwaro wogukoresha ubushyuhe bwumuriro, bigatuma iba igitutu cyumuriro - cyorohereza ibikoresho. Healthman yakoresheje ibi bikoresho kuri shitingi. Yashizweho kugirango igabanye imihangayiko ku byogajuru no kurinda urutirigongo, cyane cyane mugihe cyo kwisubiraho no kuva mu kirere, iyo guhangayikishwa n’ibyogajuru ari byinshi kandi biteje akaga. Ibi bikoresho byavumbuwe kugirango birinde umutekano w’indege. Mu ntangiriro ya za 90, isosiyete yo muri Suwede Fagerdala yongeye kuyitunganya kugira ngo ikoreshwe mu gisivili (ubuvuzi), mu ikubitiro yemerwa cyane mu buvuzi bwihutirwa no gukurikirana. Nyuma yahise imenyekana mubihugu byateye imbere, cyane cyane ubuzima - ibihugu bifite ubwenge nku Buyapani.

Ubwinshi
Iterambere rya U - rifite umusego, rikozwe muri PVC, ritanga inkunga yoroshye y umusego U - wongeyeho inyungu zo gutwara no kubika byoroshye. Ni amahitamo azwi cyane yingendo, gutwara, ibiro, hamwe n’ibyumba by’ishuri. Ariko, kubera ko PVC isanzwe ikaze, plasitike yongerwaho mugihe cyo kubyara kugirango yoroshe. Ibikoresho bisanzwe bya PVC, bizwi kandi nka phthalates, birashobora kuba birimo 20% kugeza 60%. Ingaruka mbi za phalite ni: mu bantu no ku nyamaswa, phalite ikora nka estrogene, ikongera ibyago byo kurwara kanseri y'ibere ku bagore no kwangiza gahunda y’imyororokere y’abana b’abahungu, kandi ingaruka z’ubuzima zikaba zigaragara cyane ku bana. Byongeye kandi, gukoresha ibifatika mugihe uhuza ubushyo hejuru ya PVC byongera uburozi bwibicuruzwa.

Kabiri - Imiterere

Bitewe na - imiterere yo gukaraba ya PVC, yuzuye U - umusego ugaragaza ibibazo byogusukura. Mubisanzwe bajugunywe nyuma yumubare runaka wimikoreshereze, bigabanya ubuzima bwabo. Byongeye kandi, umubare munini wibikoresho bya PVC byajugunywe bigira uruhare mu kwangiza ibidukikije. Kubwibyo, kabiri - imiterere yuburyo - imbere yimbere + igifuniko cyo hanze - yagaragaye ku isoko. U - umuvuzi wa magnetiki yubuvuzi U - umusego ni iriba - urugero ruzwi. Ikoresha umurongo wimbere wimbere wakozwe mubidukikije byangiza ibidukikije kandi bifite ubuzima bwiza, nta ngaruka zubuzima bujyanye na PVC isanzwe. Muri icyo gihe, kubera ko igifuniko cyacyo cyo hanze gikozwe muri velheti yoroshye, yoroshye kandi yorohewe, kandi imyenda yambaye isa cyane na memoire yibuka.