The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2026
Filed:
Sep. 17, 2021
Husky Injection Molding Systems Ltd., Bolton, CA;
Damish Jaidka, Brampton, CA;
Husky Injection Molding Systems Ltd., Bolton, CA;
Abstract
In one aspect, a method of coinjection molding a multilayer article using a coinjection nozzle having inner outlet, an outer outlet, and an intermediate outlet between the inner and outer outlets is provided. A stream of surface layer material is injected into a mold cavity from the intermediate outlet. With the injection ongoing, two streams of internal layer material are injected from the inner and outer outlets of the coinjection nozzle respectively. The two streams sandwich the stream of surface layer material and flow behind a melt front of the surface layer material. The sandwiched stream of surface layer material continues to supply the melt front with surface layer material at least until the melt front nears a distal end of the mold cavity. The resultant article is substantially or entirely encapsulated by a skin of the surface layer material and contains a high proportion of internal layer material.