Patent · US Active

Method and device for the dry forming of a fiber web

US8793840B2 · kind B2 · utility

0Cited by

3References

17Claims

0Family size

Assignee

Oerlikon Textile GmbH & Co. KG · DE

Inventors

Olaf Schwarz · Lübeck, DE
Ingo Mahlmann · Itzehoe, DE
Rune Sogaard Jensen · Horsens, DK

Key dates

Filing date	Feb 25, 2013
Grant date	Aug 5, 2014
Priority date	—
Expiry date	Feb 25, 2033

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD04H1/74
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method and a device for the dry forming of a fiber web, in which a multiplicity of fibers or fiber mixtures are fed to a forming head by means of an air flow is described. The forming head produces a fiber stream which is introduced into a clearance of a forming zone between the forming head and a laydown belt. To obtain as uniform a construction of the fiber layer as possible during the laying down of the fibers, the fibers of the fiber stream run through the clearance within the forming zone with free sections of different lengths. To this end, the forming head and the laydown belt are held in a non-parallel arrangement, with the result that the clearance is formed by different spacings between the laydown belt and the forming outlet of the forming head.

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