Dab tsi yog qhov zoo ntawm Ntoo-Yas Pem Teb

Pem Teb yog ib qho tshiab ntawm cov khoom hnav zoo nkauj khoom siv uas nrov heev hauv lub ntiaj teb niaj hnub no. Nws tseem hu ua "khoom hnyav pem teb". Nws yog ib yam khoom nrov nyob hauv Europe, Amelikas, Thaib, Nyiv thiab Kauslim Teb. Nws tau nrov nyob txawv teb chaws. Nws tau nkag mus rau Suav lag luam txij thaum 1980s. Nws tau pom dav dav hauv cov nroog loj thiab nruab nrab hauv Suav teb. Nws yog dav siv nyob rau ntau qhov chaw, xws li tsev neeg, tsev kho mob, tsev kawm ntawv, chaw ua haujlwm, tsev tsim, chaw pej xeem, supermarket, lag luam, chaw ua si thiab lwm yam. "PVC pem teb" hais txog hauv pem teb los ntawm polyvinyl chloride. Tshwj xeeb, polyvinyl chloride (PVC) thiab nws cov tshuaj copolymer siv los ua cov ntaub ntawv tseem ceeb, nrog fillers, plasticizers, stabilizers, colorants thiab lwm yam ntaub ntawv kev pab. Lawv ua rau cov ntaub ntawv tas mus li los ntawm cov txheej txheem los yog los ntawm kev siv nyiaj, kev rho tawm lossis txheej txheem extrusion.

1. Muaj peb hom qauv: (1) ntau hom kab hom, homogeneous permeable hom thiab semi-homogeneous hom. Cov txheej txheem PVC txheej ntau txheej txheem yog tias nws muaj ntau txheej txheej, uas feem ntau yog ua los ntawm 4-5 txheej ntawm laminated qauv. Nws feem ntau muaj kev tiv thaiv kab mob (nrog rau kev kho UV), luam yeeb yaj duab txheej, iav fiber ntau txheej, kua nplaum kab txheej, txheej kab sab nraud thiab lwm yam. Lub npe hu ua homogeneous ntawm-tus-ntxhais PVC pem hauv paus yog tias nws yog nce thiab nqis homogeneous ntawm-lub siab, uas yog, los ntawm lub ntsej muag mus rau hauv qab, txij saum mus rau hauv qab, yog tib xim.