Multilayer plastic container and method of making the same
AssigneePechiney Emballage Flexible Europe
InventorsA. B. M. Bazlur Rashid, Kevin James Curie, Patrick Carl Bushman, Michael Lewis Wampler
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Abstract
The multilayer plastic container comprises a neck portion, a body portion, adjacent the neck portion, forming a cylindrical wall, and a bottom portion adjacent the body portion and opposite the neck portion. The cylindrical wall comprises a first layer of PET, a layer of EVOH adjacent the first layer of PET and a second layer of PET adjacent the layer of EVOH the EVOH has an average thickness which is greater near the neck portion of the container than near the bottom portion of the container.
Claims24
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;
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- b) blow molding the preform to form the container.
A method of making a multilayer plastic container comprising a neck portion, a body portion extending from the neck portion, and a bottom portion extending from the body portion opposite the neck portion, wherein at least the body portion comprises an inner layer, an outer layer and an intermediate layer between the inner layer and the outer layer, wherein an average thickness of the intermediate layer in the body portion is greater near the neck portion than near the bottom portion and the intermediate layer extends substantially parallel to the body portion, said method comprising the steps of:
- a) providing a multilayer preform having a neck portion, a body portion extending from the neck portion, and a bottom portion extending from the body portion opposite the neck portion, wherein at least the body portion of the preform comprises an inner layer, an outer layer and an intermediate layer between the inner layer and the outer layer, and
- b) blow molding the preform to form the container.
A method of making a multilayer plastic container comprising a neck portion, a body portion extending from the neck portion, and a bottom portion extending from the body portion opposite the neck portion, wherein at least the body portion comprises an inner layer of PET, an outer layer of PET and an intermediate layer of EVOH between the inner layer and the outer layer, wherein an average thickness of the intermediate layer in the body portion is greater near the neck portion than near the bottom portion and the intermediate layer extends substantially parallel to the body portion, said method comprising the steps of:
- a) providing a multilayer preform having a neck portion, a body portion extending from the neck portion and a bottom portion extending from the body portion opposite the neck portion, wherein at least the body portion of the preform comprises an inner layer of PET, an outer layer of PET and an intermediate layer of EVOH between the inner layer and the outer layer;
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- b) blow molding the preform to form the container.
Dependencies are inferred from the claim text.