Transfer belt

Details Transfer belt Transfer belt

D - Textiles, Paper

21

F

D21F 1/10 (2006.01) D21F 3/02 (2006.01) D21F 3/04 (2006.01)

Patent

CA 2087212

A transfer belt for eliminating an open draw between a press in a papermachine and a transfer point has a supporting base with a particle-filled polymer coating. The coating, which constitutes the paper side of the transfer belt, carries the paper sheet from a press nip in a closed draw to a transfer point without sheet flutter or drop-off. At the transfer point, the paper sheet is readily released to another sheet-conveying papermachine-clothing product. The transfer belt may carry the sheet through more than one press nip. The transfer belt surface has a pressure-responsive recoverable degree of roughness, which is made relatively smooth by compression in the press nip, allowing the thin, almost continuous water film to form between the transfer belt and the paper sheet. When leaving the press nip, the paper sheet is held to the transfer belt by the thin, almost continuous water film. Following exit from the press nip, the transfer belt surface recovers its uncompressed roughness, breaking up the water film, so that, by the time the paper sheet reaches the transfer point, it is readily released by the transfer belt to the next sheet-conveying papermachine-clothing product, which might be a felt, a belt, or a fabric.

Cette invention concerne une toile de transfert servant à éliminer le tirage entre une presse de machine à papier et un point de transfert et caractérisée par un revêtement polymère garni de particules. Le revêtement qui se trouve du côté papier de la toile, entraîne la feuille de la ligne de pinçage d'une presse jusqu'à un point de transfert sans flottement ou chute de la feuille. Au point de transfert, la feuille se dépose sans problème sur une autre courroie de transport de la machine à papier. La toile de transfert peut desservir plus d'une presse. La surface active de la toile présente une rugosité momentanément lissable au passage de la ligne de contact des rouleaux de presse. Le tronçon lissé permet la formation d'une mince pellicule d'eau quasi continue entre la toile et la feuille. Immédiatement en aval de la ligne de pinçage, la feuille est maintenue collée à la toile par la mince pellicule d'eau quasi continue. Mais au fur et à mesure que la toile s'éloigne de cette ligne, sa surface reprend son aspect rugueux et la pellicule d'eau se désagrège de sorte que, rendue au point de transfert, la feuille feuille se dépose sans problème sur une autre courroie de transport qui peut être un feutre, une toile ou un tissu.

Affiliated with

Also associated with

Rating

Transfer belt does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transfer belt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transfer belt will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1562224