Patent · US Expired

Method for bonding fibrous web materials

US4300968A · kind A · utility

10Cited by

3References

19Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Walter Fottinger · Weinheim, DE
Bohuslav Tecl · Weinheim, DE
Erich Fahrbach · Weinheim, DE

Key dates

Filing date	Dec 18, 1979
Grant date	Nov 17, 1981
Priority date	—
Expiry date	Dec 18, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/2746
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method for bonding an unbonded fibrous web of natural and/or synthetic fibers by means of a binder which is cured by exposure to UV light, wherein the fibrous web is first compressed, smoothed, and heated, then one or both surfaces of the web is printed with a pattern of a prepolymer binder having a viscosity of from about 500 to 5000 centipoise and the prepolymer binder is cured by exposing the printed fibrous web to ultraviolet light.

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