Accelerated low toxicity method of making a composite door
US8845847B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2013 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Apr 2, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2003/7023
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A low pressure, low toxicity method of making a composite door, and a door formed from the method involving the steps forming a door frame; installing a foam block within the door frame; applying a thin coating of 1 millimeter to 4 millimeters of an water activated adhesive made of isocyanate and an alkylating agent edge to edge on a front and back side of the door frame and foam block and then within a few seconds or minutes of applying the adhesive, misting the adhesive; then placing the door frame and foam block with adhesive on a back skin then overlaying a front skin on an opposite side forming a door assemblage; and applying low pressure and low heat to the door assemblage to form the composite door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.