Patent · US Expired

Method and apparatus for producing textured napped surfaces

US4623572A · kind A · utility

7Cited by

5References

6Claims

0Family size

Assignee

Flachglas Aktiengesellschaft · DE

Inventors

Hans U. Irrlitz · Lenggries, DE
Werner Kick · Idar-Oberstein, DE
Hans Sommer · Coburg, DE

Key dates

Filing date	Nov 13, 1984
Grant date	Nov 18, 1986
Priority date	—
Expiry date	Nov 13, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/23943
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method and apparatus for the production of napped surfaces that are textured lightly and irregularly. The surface of a substrate is coated with an adhesive and then covered with short textile fibers to form a layer of nap. After the adhesive hardens, the nap layer is subjected to mechanical deformation by permitting a plurality of balls made of a resilient material to bounce on the layer. The apparatus includes a panel of backing material support for the substrate, such as a panel of material which is to be treated and which already has a nap layer on its surface. Below the support is disposed a vibrator mechanism which causes the support together with the panel of material disposed thereon to vibrate. Above the support and the panel of material disposed thereon, there is a treatment chamber having lateral partitions and an impact ceiling. Within the treatment chamber there is a plurality of balls made of a resilient material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.