Patent ID: 6280679
Filing Date: 2001-08-28
Classification: B29B,B29C,B29D,B29K,B32B,B65D,Y10T

Abstract:
A method of making a multilayer plastic container comprising a first layer of PET, a layer of EVOH adjacent said first layer of PET and a second layer of PET adjacent said layer of EVOH, said method comprising the steps of:a) providing a multilayer preform having a top portion, a neck portion extending from the top portion, a body portion extending from the neck portion opposite the top portion, and a bottom portion closing the body portion, wherein at least the body portion of the preform has a first layer of PET, a layer of EVOH adjacent said first layer of PET and a second layer of PET adjacent said layer of EVOH, wherein an average thickness of the layer of EVOH in the body portion of the preform is greater near the neck portion of the preform than near the bottom portion and the layer of EVOH extends substantially parallel to the body portion; andb) blow molding the preform to form the container.