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US 6,602,568 B2Granted
Co-layer preform having an infrared energy absorbing material added to the inner layer to effect preferential heating
AssigneePlastic Technologies, Inc.
InventorFrank E. Semersky
Life of this patent
Estimating the term…
Abstract
A co-layer stretch blow molding preform comprises an outer plastic preform and an inner plastic preform, wherein the inner plastic preform includes an infrared energy absorbing material which is absent from the outer plastic preform.
Claims7
A co-layer stretch blow molding preform, comprising:
- an outer plastic preform;
- and
- an inner plastic preform, said inner plastic preform including an infrared energy absorbing material which is substantially absent from the outer plastic preform.
A co-layer stretch blow molding preform, comprising:
- an outer PET preform;
- and
- an inner PEN preform, said inner PEN preform including an infrared energy absorbing colorant which is substantially absent from the outer PET preform.
Dependencies are inferred from the claim text.