POLYETHYLENE TEREPHTHALATE RESIN COMPOSITION, BOTTLE MADE FROM POLYETHYLENE TEREPHTHALATE RESIN, AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a PET resin composition which can obtain a preform so that a bore diameter after whitening crystallization becomes within such an acceptable range as to be treated as substantially the same bore diameter by injection molding using a single die irrespective of a difference between grades of a virgin PET resin, and to provide a method a bottle made from a PET resin formed from the PET resin composition and a method for producing the same.;SOLUTION: A PET resin composition contains 95 mass% or less of a virgin PET resin having a crystallization peak temperature at the time of rise of the temperature of 150°C or higher, and 5 mass% of a mechanical recycle PET resin having a crystallization peak temperature at the time of rise of the temperature of 135-140°C, where the crystallization peak temperature at the time of rise of the temperature is 135-145°C.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT