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Wakiilka samaynta filimku waa qaybta ugu muhiimsan ee fayraska galaaska, guud ahaan xisaabinta 2% ilaa 15% ee jajabka ballaaran ee caanaha caanaha, doorkeedu waa in lagu xiro fiber galaaska xirmooyinka, soo saarista ilaalinta fiilooyinka, si xirmooyinka fiber-ka ay u leeyihiin darajo wanaagsan oo qallafsan, agglomeration, si ay u buuxiyaan shuruudaha soo socda ee habka fiber-ka. Walxaha samaynta filimada sida caadiga ah loo isticmaalo qaabaynta faleebada galaaska ah waa polymers, oo ay ku jiraan resins epoxy, polyurethane, polyester, resins phenolic, kala firdhiyo polypropylene la beddelay, ama emulsions. Waxqabadka wakiilada filim samaynta waxay inta badan ku xiran tahay qaabka molecular iyo miisaanka kelli ee polymerka. Wixii isku mid ah wakiilka filim-samaynta, qallafsanaantafiber galaaswaxaa lagu xakameyn karaa culeyska molecular ee wakiilka filim-sameynta, iyo wakiilka filim-sameynta leh miisaanka kelliga sare wuxuu yeelan doonaa qallafsanaan sare oo fiber galaas ah, kaas oo ku habboon daaweynta dusha sare eexoojinta thermoplastic la jarjaray alaabada fiber galaas, halka wakiilka filim-samaynta leh miisaanka molecular hoose uu ku habboon yahay soo saarista dunta loo isticmaalo dabaylaha iyo jiidista qaabaynta. Polymers resin Epoxy ka kooban aliphatic hydroxyl, ether, iyo kooxaha epoxy, iyo waxaa jira soo jiidashada kiimikada xoog badan oo u dhexeeya kooxaha polar ee epoxy film-samaynta wakiilada, sidaas darteed waxay leeyihiin adhesion wanaagsan iyo saamaynta xidhitaan on fiilooyinka galaaska;

Intaa waxaa dheer, kooxda epoxy ee wakiilka filimka-samaynta epoxy waxay ka falcelin kartaa kooxda hydroxyl terminal, kooxda karboksyl ee terminal, kooxda amino terminal, iyo kooxaha kale ee firfircoon ee balaastikada injineernimada sida PBT, PET, PA, PC, iwm, si loo hagaajiyo xoogga isku xidhka dhexda ee u dhexeeya fiber galaas iyo xabagta. Walaxaha samaynta filimka polyesterka waxaa ku jira kooxo badan oo ester ah, bonds kiimiko ah oo aan la daboolin, iyo kooxaha hydrophilic ee silsiladda ugu weyn, waxqabadkooduna wuxuu ku xiran yahay nooca acid iyo khamriga loo isticmaalo isku dhafka polyesterka iyo saamiga. Marka xuubka salka uu yahay xabagta polyester-ka aan saturated ahayn, isku-xidhka labanlaaban ee aan buuxin ee ku jira wakiilka filim-samaynta polyester-ka ayaa polymerize kara oo ka gudbi kara isku-xidhka labanlaabka ah ee xargaha salka si ay u sameeyaan curaarta kiimikada xooggan ama isku-duubnaanta jirka, taas oo hagaajinaysa xoogga isku-xidhka wajiga. Walxaha samaynta filimaanta Polyester-ka waxay badanaa leeyihiin sifooyin qoynta iyo dhexgalka wanaagsan sidaas darteedna waxaa loo isticmaalaa sida wakiilada qoynta ee pultrusion, dabaysha, buufinta, chevron, iyo alaabada kale. Polyurethane film-samaynta silsilad molecular ee wakiilka ka kooban yahay soo noqnoqda qaab-dhismeedka carbamate, jiritaanka kooxahan polar ka dhigaysa polyurethane in fiber galaas ay leeyihiin xidhid aad u wanaagsan, qaybaha jilicsan ee molecular iyo adag ee isku dhafka ah ee barti sare iyo caabbinta abrasion, isla mar ahaantaana, polyurethane ee kooxda isocyanate waxaa lagu dhexgelin karaa iyada oo la falgaliyay wakiilka amino matrix ah. isku xidhka, hagaajinta waxqabadkawalxaha isku dhafanalaabta.