Method and installation for advancing a needled fiber plate
US6568050B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2002 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | May 22, 2022 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H18/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A fiber structure for needling is driven so as to impart a speed of advance thereto past a needling head carrying a plurality of needles that are driven with reciprocating motion during which they penetrate into the fiber structure and are extracted therefrom. The instantaneous speed of advance of the fiber structure decreases in response to the resistance to advance caused by the needles penetrating and subsequently increases on the needles being withdrawn. The force exerted on the needles by the advance of the structure is thus limited, without completely interrupting advance throughout the time that needles are present within the structure. The fiber structure can be caused to advance by means of a transmission presenting mechanical slack suitable for absorbing the decrease in the speed of advance caused directly by the resistance to advance that is exerted by the needles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.