Madzi apamwamba kwambiri osakhudzidwa ndi polyester sturge ya fiberglass
"Polyester" ndi kalasi ya ma polymer ma polights okhala ndi magwiritsidwe omwe amadziwika ndi ma rentin monga ma resin kapena phenoxy amatunga. Pakudya ichi cha polymer chimapangidwa ndi momwe ma polycondentation acid ndi mowa wambiri, ndipo pomwe polyester iyi imakhala ndi mgwirizano womwe unali wosagawika, ndipo polyester iyi idasungunuka mu molymer (nthawi zambiri styrene).
Kusungunuka kwa polyester kumeneku kumasungunuka mu molymer (nthawi zambiri kumakhala kokhazikika kwa polymer
Zovala zosavomerezeka polyester zitha kufotokozedwa ngati zowoneka ngati zotupa za dibasic acid ndi mowa woledzera womwe umakhala ndi polymer polymer (nthawi zambiri amakhala ndi styrene). Ma polyester osakhudzidwa polter, omwe amapanga 75 peresenti ya ma resins omwe timagwiritsa ntchito tsiku lililonse.