Structural hot melt material and methods
US6887914B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2002 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Sep 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249999
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a material, method, and application for reinforcement of structural members, especially joints such as a hem flange joint of an automobile. The method and material of the present invention comprises of combining, in parts by weight: less than about twenty percent (<20%) ethylene copolymer, less than about forty percent (<40%) epoxy, less than about thirty percent (<45%) epoxy-based resin, less than about two percent (<2%) blowing agent and from about one percent (1%) to about five percent (5%) curing agent (and optionally add any of the following components: less than about two percent (<2%) curing agent accelerator, from about twenty-five percent (25%) to fifty-five percent (55%) filler, and less than about one percent (<1%) of coloring agent). The application of the present invention comprises of: (1) providing a structural member having two substrates forming a space to be joined; (2) placing the material of the present invention in proximity of the space to be joined; (3) exposing the material to a heat source causing it to flow, fill, and cure in the defined area or space to be joined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.