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US 11,951,661 B2Granted
Process and article produced by injection molding
AssigneeInternational Automotive Components Group NA, Inc.
InventorsFriedrich Rudolf Kralits, Sandor Palvoelgyi, David Mark Pascoe, Susan M. Kozora, Benedetto Reginella
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Abstract
The present disclosure relates to a process and article produced by injection molding. More particularly, a process and article produced by injection molding, that provides a part with one or more locations of a reduced density where such part competes in mechanical property characteristics with parts, such as vehicular components, otherwise produced from metallic materials.
Claims12
A method of forming an injection molded part comprising:
- providing an injection mold comprising a first mold half and a second mold half that provides a molding cavity between the first mold half and the second mold half, wherein the molding cavity includes one or more locations having an initial spacing;
- injecting a polymer composition into the molding cavity, the polymer composition comprising:
- (a) a first polymer having a melt strength of greater than or equal to 20.0 cn and a melt extensibility of greater than or equal to 100 mm/sec;
- (b) a second thermoplastic polymer having a melt flow index of greater than or equal to 10.0 g/10.0 minutes;
- (c) reinforcing fiber;
- (d) a foaming agent;
- increasing said molding cavity initial spacing at said one or more locations;
- and
- forming the injection molded part in the molding cavity from the polymer composition wherein the injection molded part includes a cellular structure.
6 more elements
Dependencies are inferred from the claim text.