Automobile weather strip
US5766703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1995 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Dec 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automobile weather strip having a main body made of a sulfur-vulcanizable ethylene propylene rubber (EPDM) type compound and having a portion designed to be in contact with a sealer when the weather strip is mounted to an automobile. A sealer underlying layer is included that will be in contact with the sealer with that layer comprised of a bondability improving EPDM type compound and coextruded together with the main body. The bondability improving EPDM type compound is based on a blended polymer having a blending ratio: ______________________________________ EPDM type polymer 60-96 wt % NBR type polymer 2-30 wt % hydrogenated SBR type polymer 2-30 wt %. ______________________________________ A practical bondability can be ensured between the weather strip and the sealer with no pretreatment, such as by buff fabrication, to a portion of the weather strip to be abutted to or in contact with the sealer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.