Method of making a mechanical fastener and apparatus including a roller with protrusions
US9475205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2012 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Jul 13, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1062
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of making a mechanical fastener. The method includes providing a slit web having mechanical fastening elements and spreading the slit web in the cross-machine direction by directing the slit web over at least a first roller having first multiple protrusions around its peripheral surface. The slit web includes a plurality of interrupted slits that are interrupted by intact bridging regions of the web that divide the interrupted slits into a series of spaced slit portions aligned in the machine direction. The first multiple protrusions are positioned such that adjacent protrusions push through consecutive slit portions of a first of the interrupted slits to form a spread mechanical fastening web. An apparatus including the first roller and at least a subsequent roller is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.