Patent · US Active

Apparatus on a flat card or roller card having a cylinder and at least one doffer

US8132297B2 · kind B2 · utility

0Cited by

2References

15Claims

0Family size

Assignee

Truetzschler GmbH & Co. KG · DE

Inventors

Achim Breuer · Aachen, DE
Christoph Farber · Korschenbroich, DE
Jurgen Marz · Düsseldorf, DE

Key dates

Filing date	May 15, 2009
Grant date	Mar 13, 2012
Priority date	—
Expiry date	Dec 19, 2029

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01G15/18
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

In an apparatus on a carding machine having a cylinder and at least one doffer, in which the cylinder and the doffer each have an all-steel clothing having saw teeth, the clothing on the cylinder and the clothing on the doffer each have a point density per square inch (ppsi). For achieving increased production rate with the same quality or improved quality with the same production rate, the clothing on the doffer has a point density of at least 400 ppsi, and the ratio between the point density of the clothing of the cylinder and the point density of the clothing of the doffer influences the proportion of the fiber mass that is transferred from the cylinder to the doffer per revolution of the cylinder in the sense of a higher production rate or higher quality of the card.

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