Method and system for manufacturing a dry-formed fibrous web

Details Method and system for manufacturing a dry-formed fibrous web Method and system for manufacturing a dry-formed fibrous web

D - Textiles, Paper

21

H

D21H 23/02 (2006.01) D04H 1/60 (2006.01) D21F 9/00 (2006.01) D21H 21/56 (2006.01)

Patent

CA 2180534

For the manufacturing of dry-formed webs of cellulose fibres there are two different ways of binding the fibres, viz. an application of glue to the web surfaces and, respectively, an admixing into the fibre charge of heat actuated binding fibres that are actuated by passing the web through a heating zone. The latter method is the better in practice, of course, in particular for liquid absorbing products, but the problem exists that the finished material is dusting with short, unbonded fibres. According to the invention it has been realized that it is possible to widely avoid this problem by auxiliary use of the first method, modified to the effect that both surfaces of the web are concurrently subjected to a supply of a very small amount of glue in foamed condition, e.g. with only 1 gram per square meter, whereby the surfaces remain permeable, but also sealing against extrusion of short fibres from inside the web.

Dans la production de bandes de cellulose formées à sec, il existe deux manières différentes de lier les fibres: encoller les surfaces de la bande, et ajouter à la charge fibreuse des fibres liantes thermoactivées qui sont activées par passage dans une zone chauffante. En théorie, cette dernière manière de procéder est la meilleure, bien entendu notamment pour des produits qui absorbent les liquides, mais en pratique, elle présente l'inconvénient que le matériau fini est poudré par des fibres courtes, non liées. Selon l'invention, cet inconvénient peut être pallié par la mise en oeuvre du premier procédé modifié de manière à ce que les deux surfaces de la bande soient simultanément soumises à l'apport d'un volume infime de colle sous forme de mousse, c'est-à-dire à raison d'1 gramme par mètre carré. Les surfaces restent ainsi perméables, mais sont cependant rendues étanches afin d'éviter que des fibres courtes ne sortent de l'intérieur de la bande.

Affiliated with

Also associated with

Rating

Method and system for manufacturing a dry-formed fibrous web does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for manufacturing a dry-formed fibrous web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for manufacturing a dry-formed fibrous web will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1994372