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US 5,976,450 AGranted
Preform for polyester bottle
OwnerHubertus Mreijeninventor
Life of this patent
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Abstract
The invention relates to a preform for a polyester bottle, having applied to its surface a coating of a material that lowers the coefficient of friction of the polyester and to a method of producing a preform for a polyester bottle, provided with a coating of a material that lowers the coefficient of friction of the polyester used, comprising producing a preform by means of extrusion or injection moulding, followed by applying said coating to the preform.
Claims5
A method of forming a bottle, said method comprising the steps of:
- producing a polyester preform for a bottle;
- applying a protective coating of a material that lowers the coefficient of friction of the polyester on the outer surface of the preform to prevent the production of surface damage to the preform caused by mutual contact with other preforms;
- allowing the coating to dry;
- transporting the dried, coated preform in mutual contact with other preforms to blow mold apparatus, and
- blowing the preform in the blow mold apparatus to form the bottle.
2 more elements
Dependencies are inferred from the claim text.