Method of making press felt, and press felt

Details Method of making press felt, and press felt Method of making press felt, and press felt

D - Textiles, Paper

21

F

D21F 7/10 (2006.01) D21F 7/08 (2006.01)

Patent

CA 2429669

A method of making a press felt is provided. A base fabric having a web-side surface and a base component is formed. The base component is weaved of warp yarns and weft yarns which forms seam loops at a first and a second transverse jointing edges that are a seam area. The surface component extends at the first jointing edge longer than the base component to form a seam flap over the seam area. The base component extends the length of the seam flap longer than the surface component at the second jointing area. A batt fibre layer is needled on the web-side surface of the base fabric. The jointing edges of the base fabric are arranged edge on edge to assemble the press felt into a closed-loop piece. A seam yarn is inserted into a seam loop channel of intermeshed seam loops interconnecting the jointing edges.

L'invention concerne un procédé de fabrication d'un feutre de presse, un feutre de presse et un tissu de base. Le tissu de base (2) comprend un composant de surface (4) prévu sur la surface faisant face à la bande de papier à sécher, et un composant de base (5) situé au-dessous du composant de surface. Les bords de jointoiement transversaux du composant de base (5) sont dotés de boucles de soudure (9) permettant la liaison du composant de base, de sorte qu'une boucle fermée soit formée. Au niveau du premier bord de jointoiement du tissu de base, le composant de surface (4) s'étend sur une distance prédéterminée supérieure au composant de base (5) et forme un volet de soudure (13) protégeant la zone de soudure (14) du composant de base. Au niveau du deuxième bord de soudure, le composant de base (5) s'étend sur la longueur du volet de couture (13) sur une longueur supérieure à celle du composant de surface (4).

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