Press felt and method of manufacturing it

Details Press felt and method of manufacturing it Press felt and method of manufacturing it

D - Textiles, Paper

21

F

D21F 7/08 (2006.01) D06H 5/00 (2006.01)

Patent

CA 2119784

2119784 9211411 PCTABS00014 A press felt is devised for use in a papermaking machine, and a method is provided for manufacturing such a press felt. The press felt comprises a base fabric which is made of fabric of yarn material and is endless in the machine direction of the press felt, and one or more layers of fibre material arranged on the base fabric. The base fabric of the press felt comprises at least one layer composed of a spirally-wound strip (20) made of fabric of yarn material and having a width (w) which is smaller than the width (B) of the final base fabric. Longitudinal threads (22) of the spirally-wound fabric strip of yarn material (20) make an angle .alpha. with the machine direction of the press felt. The fabric strip of yarn material (20) may advantageously be flat-woven.

La présente invention a pour objet un feutre de presse destiné à être utilisé dans une machine à papier ainsi que la méthode de fabrication du dit feutre de presse. Le feutre de presse comprend une toile de base faite de fils et circulant sans fin dans le sens de rotation du feutre de presse et une ou plusieurs couches de matériau de fibres disposé sur la toile de base. La toile de base du feutre de presse comprend au moins une couche composée d'une bande (20) en spirale faite de toile en fils et ayant une largeur (w) inférieure à la largeur (B) de la toile de base finale. Les fils longitudinaux (22) de la bande de toile en fils en spirale (20) font un angle alpha par rapport au sens machine du feutre de presse. La bande de toile en fils peut être avantageusement tissée à plat.

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