Imprinting press section felt for paper pulp, method of...

D - Textiles – Paper – 21 – F

Patent

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D21F 7/08 (2006.01)

Patent

CA 2220653

A wet felt for the press section of a paper pulp producing machine is formed with an array of machine direction extending heavy marking yarns on the face surface of the felt for the purpose of forming ridges and valleys in one or more of the surfaces of the sheet of pulp material before the sheet is delivered to an air dryer, for enhancing the drying rate and increasing the wet strength of the pulp sheet. A process is disclosed by which pulp sheets are formed with a grooved surface bypressing in the press section with a felt having machine direction cords formed in the felt to make such impressions, and the product so made in the process.

Feutre humide pour la section des presses d'une machine à pâte à papier. Il est constitué d'un réseau de fils de marquage très épais s'étendant en sens machine sur la face du feutre, afin de former des rainures dans une ou plusieurs des surfaces de la feuille de pâte avant son acheminement à un séchoir, afin d'accélérer la vitesse de séchage et d'augmenter la résistance humide de la feuille de pâte. On fournit une description d'un procédé selon lequel des feuilles de pâte sont formées au moyen d'une surface rainurée par pression dans la section des presses avec un feutre présentant des côtes en sens machine, afin d'obtenir les impressions voulues. On décrit également le produit obtenu par ce procédé.

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