Reformed crosslinked polyethylene articles
US6361842B1 · kind B1 · utility
21Cited by
106References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1999 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Dec 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/139
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing reformed crosslinked polymer articles provides reformed crosslinked articles free of visible and objectionable folds, seams and interfaces on reformed surfaces thereof. In a preferred embodiment, a product is produced by a method including the steps of extruding a silane-grafted polyethylene tube, heating an end of the tube, reforming the end of the tube to produce a radially enlarged sealing surface thereon, cooling the reformed tube, and curing the reformed tube to produce an increase in the degree of crosslinking of the polyethylene material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.