Nixon & Vanderhye
Method of manufacturing polybutylene terephthalate resin films
 A polybutylene terephthalate resin film is produced by forming a film of a polybutylene terephthalate resin having an inherent viscosity of more than 1.0 by the inflation molding technique and under the condition of extrusion resin temperatures within a range defined by the following relation: PA0 melting point (.degree.C.)<extrusion resin PA0 temperature (.degree.C.)<melting point-26+53.times.inherent viscosity (.degree.C.). 
Polyplastics Co., Ltd.
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Takehiko Shigekazu Kotaro Shigeru
Shimada Tanimoto Taniguchi Nedzu