Method for forming a semifinished nonwoven product and a semifinished nonwoven product
US5476703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1993 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Mar 1, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24132
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A lap is produced in a spreading lapping machine (2) by successively folding a fiber web from a card (1), whereafter the lap is drawn in a drawing machine (4). The drawing machine (4) is provided with rotatable devices having peripheral fittings with spikes that are driven into the core of the lap. The degree of drawing is adjusted in such a way that most fibers in the drawn product are arranged in two directions which are substantially symmetrical relative to the lengthwise direction of said drawn product, and lie at an angle of 30.degree.-60.degree. C. relative thereto. The method is particularly useful for improving the mechanical properties of lapped products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.