40 mole of terephthalic acid and a diol component as main components as a dicarboxylic acid component other than terephthalic acid described above there may be mentioned aliphatic dicarboxylic acids having 12 to 20 carbon atoms including azelaic acid sebacic acid adipic acid and dodecanedicarboxylic acid aromatic dicarboxylic acids including isophthalic acid orthophthalic acid naphthalenedicarboxylic acid diphenyl 4 4 39 dicarboxylic acid and diphenylethane 4 4 39 dicarboxylic acid or alicyclic dicarboxylic acids represented by cyclohexanedicarboxylic acid or a mixture thereof as the above diol component there may be mentioned aliphatic glycols having 2 to 20 carbon atoms such as ethylene glycol propylene glycol 1 4 butanediol neopentyl glycol 1 5 pentanediol 1 6 hexanediol decamethylene glycol and cyclohexanedimethanol and long chain glycols having a molecular weight of 400 to 6 000 such as polyethylene glycol poly 1 3 propylene glycol and polytetramethylene glycol or a mixture thereof representative examples of the polyalkylene terephthalate resin comprising the above dicarboxylic acid component and diol component may include polyethylene terephthalate polypropylene terephthalate polybutylene terephthalate polyhexamethylene terephthalate and polycyclohexanedimethylene terephthalate in these polyalkylene terephthalate resins an intrinsic viscosity measured at 30 u00b0 c in a solvent mixture comprising phenol and tetrachloroethane with a weight ratio of 1 1 is preferably 0 3 to 1 5 more preferably 0 4 to 1 2 if the intrinsic viscosity is less than 0 3 physical properties expected as.