Method of fabricating a foamed, injection molded component with improved ductility and toughness
US9555564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2013 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Jul 6, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/772
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of fabricating a foamed, injection-molded component is provided. The method includes the step of plasticizing pellets including a first polymeric material and a second polymeric material within an injection barrel to form an injection material. The first polymeric material defines a first phase of the injection material and the second polymeric material defines a second phase of the injection material. The first and second phases of the injection material are immiscible. The injection material is injected into a mold to fabricate the foamed injection-molded component having microscale, microcellular voids. Upon tensile loading, submicron, secondary phase cavities are formed in the injection-molded component, resulting in improved ductility and toughness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.