Loading patent…
AssigneeKortec, Inc.
InventorPaul M. Swenson
Estimating the term…
Disclosed herein are methods and systems for the preparation of a co-injection molded multilayer plastic article. Some methods include co-extruding a combined polymeric stream having an interior core stream encased by an inner stream and an outer stream. One or more pulses in a thickness of the interior core stream create portions of an edge of the outer flow stream flowing along different streamlines. A first portion of an outer edge of the interior core stream flows beyond a second portion of the outer edge thereby forming one or more cohesion members that physically interlock the interior layer with the inner layer, with the outer layer or with both. Some embodiments reduce or eliminate a need for addition of an adhesive in the composite stream to prevent delamination of layers of the resulting multilayer plastic article. In some embodiments, cohesion members may be employed to produce a desired cosmetic effect in a resulting article.
A method of co-extruding a plurality of polymeric plastic material streams to produce a resulting molded plastic article, the method comprising the steps of:
A co-injection molded multi-layer plastic article comprising:
A system for forming a multi-layer molded plastic article having a cohesion member, the system comprising:
Dependencies are inferred from the claim text.