Kodi mumadziwa bwanji za mbiri ya thovu ya PVC

Pamene maonekedwe a thovu a PVC adayambitsidwa m'ma 1970, adatchedwa "matabwa amtsogolo," ndipo mankhwala awo ndi polyvinyl chloride. Chifukwa cha kufala kwa zinthu zolimba za PVC zotsika thovu, zimatha kulowa m'malo mwa zinthu zonse zopangidwa ndi matabwa.

M'zaka zaposachedwa, ukadaulo wa opanga chithovu cha PVC wapitanso patsogolo mwachangu, kulola kuti zinthu zolimba za thovu za PVC zikhale zopanga mafakitale m'magawo azinthu zamamangidwe ndi zokongoletsera, komanso kapangidwe kazinthu zapanyumba.

Powonjezera chodzaza chosiyana pazinthu za thovu la PVC, mawonekedwe osiyanasiyana amaperekedwa kuzinthu zolimba za thovu la PVC. Zimawonjezera kuchuluka kwa kugwiritsidwa ntchito kwa mankhwalawa m'malo ena ogwiritsira ntchito zida zosiyanasiyana zomangira ndi zokongoletsera zokongoletsera. Nthawi yomweyo zinthu zolimba za thovu za PVC zimakhala ndi zinthu zabwino zokongoletsa pamwamba.

Chinyezi, odana ndi dzimbiri, lawi retardant, sanali poizoni, ndi fungo PVC thovu mbiri zipangizo Mtundu uwu wa mankhwala akhoza bwino kusintha malo okhala, ndi PVC thovu ndondomeko tsopano makamaka ntchito olimba PVC thovu ndi kutumphuka thovu bolodi, komanso zina PVC thovu zinthu kukongoletsa mbiri, kupanga sikelo ya luso mankhwala. Kugwiritsiridwa ntchito kwa kafukufuku kukuchulukirachulukira pankhani yomanga, kulongedza katundu, mipando, ndi madera ena.

Pamwamba pa bolodi la thovu la PVC limatha kupopera, zomwe zingapewe kusintha kwamtundu wamtundu ndipo zimakhala ndi mwayi wotsutsana ndi kuuma kwapamwamba. Ndiye pali njira yathu wamba processing kupanga, mu phala pamwamba pa mbale galasi, processing ambiri adzakhala makamaka basi kwa m'mphepete kusindikiza makina, ndi basi m'mphepete kusindikiza makina zingakhudzire odzigudubuza dongosolo mtundu komanso crawler mtundu wachiwiri, koma ngati si ntchito chithovu dzenje pamene tikulimbikitsidwa kugwiritsa ntchito ndi pamwamba phala zinthu ali ndi mtundu wofanana, kupewa pepala phala pa chitukuko cha shrinkage zoonekeratu mtundu.