Patent · US Expired

Multi-colored floor covering and method of manufacturing it

US5049431A · kind A · utility

4Cited by

5References

8Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Klaus Heckel · Weinheim, DE
Gerhard Graab · Mannheim, DE
Hans-Michael Kuhl · Hirschberg, DE

Key dates

Filing date	Dec 22, 1986
Grant date	Sep 17, 1991
Priority date	—
Expiry date	Dec 22, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24331
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method of manufacturing a floor covering presses a bottom layer of a polymeric material into apertures in a top layer having a higher pressure-flow viscosity than the bottom layer. The pressure also joins the layers into the floor covering and forms a continuous pressure-vulcanization skin on the top thereof for more uniform soiling and wear characteristics. Selecting the size and arrangement of the apertures in the top layer produces a corresponding pattern of the bottom-layer material in the top of the joined layers which is independent of any surface configuration also imparted in the pressing.

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