Method of formulating low gravity sponge rubber for automotive weatherstrips
US9663641B2 · kind B2 · utility
0Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2011 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Aug 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249991
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to automotive weatherstrip material. More specifically, the invention utilizes thermo-expandable microspheres in the sponge bulb member of the weatherstrip to produce a microcellular structure which provides a lower weight weatherstrip material with improved surface appearance and comparable stiffness to known materials for use in the automotive industry, and exhibiting a blown specific gravity of less than about 0.60 g/cc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.