Kayayyakin polypropylene da aka ƙarfafa ta fiberglass kayan filastik ne da aka gyara. Polypropylene da aka ƙarfafa ta fiberglass gabaɗaya ginshiƙi ne na barbashi mai tsawon mm 12 ko 25 mm da diamita kusan mm 3. A cikin waɗannan barbashi, fiberglass ɗin yana da tsayi iri ɗaya da barbashi, abun ciki na fiber ɗin gilashi na iya bambanta daga 20% zuwa 70% kuma launin barbashi za a iya daidaita shi da buƙatun abokin ciniki. Ana amfani da barbashi gabaɗaya a cikin tsarin allura da ƙera don samar da sassan tsari ko rabin gini don aikace-aikace a cikin motoci, gini, kayan aikin gida, kayan aikin wutar lantarki da ƙari mai yawa.
Aikace-aikace a masana'antar kera motoci: Firam ɗin gaba, kayan ƙofofin jiki, kwarangwal na dashboard, fanka da firam ɗin sanyaya, tiren batir, da sauransu, a matsayin madadin kayan ƙarfe ko kayan ƙarfe masu ƙarfi.
