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US 7,588,808 B2Granted
Mono and multi-layer articles and injection molding methods of making the same
AssigneeAdvanced Plastics Technologies Luxembourg S.A.
InventorsGerald A. Hutchinson, Robert A. Lee, Said K. Farha
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Abstract
In preferred embodiments methods and apparatuses can produce articles that have formable material. The articles may be mono and multilayer. The articles can be formed by various methods.
Claims20
A preform comprising:
- a neck portion;
- and
- a body portion having a wall portion and an end cap, the body portion comprising a first layer and a second layer, the second layer comprising a partially expanded expandable material, wherein the second layer is the outermost layer of the preform
- wherein the expandable material comprises microspheres that enlarge during heat treatment.
1 more element
A preform comprising:
- a threaded neck portion;
- and
- a body portion including a wall portion and an end cap, the body portion comprising at least an innermost layer and an outermost layer, wherein the outermost layer comprises a partially expanded expandable material adapted to further expand when activated
- wherein the expandable material comprises microspheres and a carrier material.
1 more element
Dependencies are inferred from the claim text.