LAMINATED PREFORM FOR BLOW MOULDED CONTAINER; THREE LAYERS IN FINISH REGION AND FIVE IN BODY

摘要

This relates to the formation of a preform for a container which is formed primarily of PET and like saturated polyesters which are to be utilized in the packaging of a hot fill liquid and like product, particularly a container wherein a metal closure is to be utilized. The preform is of a laminated construction with the body of the preform being of a five layer construction and the neck finish portion being primarily of a three layer construction including outer layers of PET or like saturated polyester and a core formed of a high Tg polymer. The same high Tg polymer would be in the form of thin layers in the body of the preform between inner and outer layers and a core.