Method and apparatus for seaming wide panels of EPDM membrane to form a composite EPDM roofing membrane
US6615892B2 · kind B2 · utility
14Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1998 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Nov 20, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1727
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for continuously seaming cured EPDM membrane to form a composite sheet of predetermined width and indefinite length. The method includes the steps of providing at least two rolls of cured EPDM membrane having longitudinal marginal edges and feeding the cured EPDM membrane from the at least two rolls in a first direction. The longitudinal marginal edges of the cured EPDM membranes are positioned in an overlapping relationship as the cured EPDM membranes are fed in the first direction and then the overlapping longitudinal marginal edges are continuously seamed to form a composite sheet of indefinite length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.