Patent · US Expired

Process for dyeing and printing sheets

US4190417A · kind A · utility

4Cited by

11References

14Claims

0Family size

Assignees

Mobay Chemical Corporation · US
BAYER HEALTHCARE LLC · DE

Inventors

Helmuth H. Prochaska · Hackettstown, US
Gert Baumann · Pittsburgh, US
Peter Rasche · Aachen, DE
Heinz Muller · Krefeld, DE
Alberto Gonzales-Dorner · Leverkusen, DE

Key dates

Filing date	Oct 31, 1977
Grant date	Feb 26, 1980
Priority date	—
Expiry date	Oct 31, 1997

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06P5/003
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The present invention is concerned with a process for dry printing or dyeing of sheets. A foam structure is printed or dyed and placed in contact with the sheet to be treated. The composite is subjected to sufficient heat and pressure to destroy the foam structure without significantly damaging the sheet. The result is the sheet surface now appears to carry the printing or dyeing. Among the suitable carrier foams are polyurethane foams. The process finds particular utility in coloring difficult to dye substrates such as cotton, fiber glass or asbestos fabrics with water insoluble dyes.

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