GBSI-tape yefilimu ye-polyester, ebizwa nangokuthi i-Mylar tape, isebenzisa ifilimu yePolyester njengesixhaso senkampani yenethiwekhi esinamatheliswa yi-acrylic ebucayi.Sinemibala eminingi esingayikhetha njengecacile, eluhlaza, ebomvu, ephinki, eluhlaza okwesibhakabhaka, ephuzi, emnyama, njll. Inonamathela okuqinile, ukumelana nogesi ophezulu kanye nokumelana nomlilo okuvame ukusetshenziswa ekuhlanganisweni kwentambo/kwezintambo, ibhandeshi lebhethri, ukuvikela amandla okushintsha. , njll.