CO-INJECTION METHOD, PREFORM, AND CONTAINER

摘要

A method of forming a multi-layer, co-injection molded article is disclosed. In an embodiment inner, middle, and outer layers of a polymer material are co-injected, and the velocity of the co-injection of the inner, middle, and outer layers are controlled. In embodiments of the method, the velocity of the co-injecting is less than about 0.390 inch/second. With embodiments, the articles may be formed from polyethylene terephthalate (PET). Articles, such as preforms, that are formed from a co-injection process, in which velocity is controlled, are also disclosed.

主权项

1. A method for forming a co-injection molded article, the method comprising:
co-injecting at least an inner layer and an outer layer of a polymer material; and controlling the velocity of the co-injecting of the inner layer and the outer layer, wherein the velocity of the co-injecting is less than about 0.390 inch/second.