... luster & colorfastness PBT has extension capacities that surpass those of comparable yarns by one third. This highly elastic, friction textured ... through UV raysl Light-fastness similar to that of a polyester Uses of PBT –yarnsl Sportswear: track suits, jogging clothes, swimwear, ... for PA or PP but to change the consumers perception of polyester in general, to regain market share partially last ...