A METHOD AND A DEVICE FOR DRYING OR HEAT TREATMENT OF A WEB-FORMED MATERIAL

Title:

A METHOD AND A DEVICE FOR DRYING OR HEAT TREATMENT OF A WEB-FORMED MATERIAL

Document Type and Number:

WIPO Patent Application WO2004057254

Kind Code:

A3

Abstract:

When drying a web-formed material (1), preferably glass fibre, the web-formed material is passed, in contact with a gas-permeable dryer screen (3), through a drying plant (21). One or more fans (27) blow hot process air against, and through, the web-formed material (1) in order to dry it. A chamber (27a), surrounding the fan or the fans (27), has a limiting surface that is essentially parallel to the surface of the web-formed material. This limiting surface has an opening (29a) that extends essentially across the whole width of the web-formed material (1). A distributing member (20), in the form of an arcuate perforated, sheet-formed element (90), placed outside the chamber (27a), covers the opening (29a) completely. With the distributing member (20) a first flow of process air is divided into a large number of jets, distributed over essentially the whole of the angular area that faces the web-formed material (1). Thereafter, the jets are allowed to mix with one another again to form a second flow of process air, which is passed through a flat perforated, sheet-formed element (2a) that is positioned close to and extends over essentially the whole of the web-formed material (1), and then against and through the web-formed material (1) lying on the gas-permeable dryer screen (3).

More Like This:

JP2000033338	WATER REPELLENT COATING FILM AND ITS PRODUCTION
WO/2002/042235	EPOXY URETHANE STRING BINDER
WO/1994/026676	GLASS FIBER BINDING COMPOSITIONS, PROCESS OF MAKING GLASS FIBER BINDING COMPOSITIONS AND PROCESS OF BINDING GLASS FIBERS

Inventors:

RYDELL INGEMAR (SE)
RINGQVIST AAKE (SE)
SALO HEIKKI (SE)

Application Number:

PCT/EP2003/014316

Publication Date:

August 05, 2004

Filing Date:

December 16, 2003

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ANDRITZ FIBER DRYING AKTIEBOLA (SE)
RYDELL INGEMAR (SE)
RINGQVIST AAKE (SE)
SALO HEIKKI (SE)

International Classes:

C03C25/00; C03C25/64; F26B13/02; F26B13/10; F26B21/00; (IPC1-7): F26B13/02; C03C25/64

Domestic Patent References:

WO1982003450A1

1982-10-14

Foreign References:

US3849904A	1974-11-26
US4253247A	1981-03-03
EP0354116A2	1990-02-07

Other References: