Patent · US Expired

Method for producing a fibrous material

US7514025B2 · kind B2 · utility

18Cited by

3References

18Claims

0Family size

Assignee

CVP Clean Value Plastics GmbH · DE

Inventors

Michael Hofmann · Hamburg, DE
Andreas Holm · Tegernsee, DE
Dirk Venschott · Hamburg, DE

Key dates

Filing date	Jul 7, 2004
Grant date	Apr 7, 2009
Priority date	—
Expiry date	Sep 7, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/62
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Method for producing a fibrous material for the manufacturing of preformed parts, in which a binder is added to the fibrous material and it is pressed into a preformed part upon application of heat, characterised in that a portion of particles of plastics and/or fibers from plastics is admixed to a particle or fiber mass of a first group of particles or fibers, the particle size of said particles from plastics and/or fibers from plastics approximately corresponding to the particle size of the particles or fibers of the first group, wherein the particles from plastics and/or fibers from plastics are obtained by crushing and/or defibrating agglomerates of pure or mixed plastics in a disc refiner, and that if necessary water is fed into the disc refiner during the crushing process.

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