PRESS FELT FOR A PAPERMAKING MACHINE

摘要

A press felt includes a base structure providing dimensional stability in a machine and a cross machine direction of the felt, a batt fiber structure including batt fiber layers attached to the base structure which provide a paper contacting side and a machine contacting side of the felt. The base structure includes a first and second side. Polymeric beads or strands made from a polymeric material are arranged on at least one of the two sides of the base structure. The polymeric beads or strands arranged on the at least one side have a longitudinal expansion in the machine direction of the felt and are arranged side-by-side when viewed in the cross machine direction of the felt to generate space between adjacent beads or strands. At least one of the batt fiber layers is arranged to cover both the at least one side and the polymeric beads or strands thereon.

主权项

1. A press felt for the use in a press section of a material web producing or processing machine, in particular a paper, board or tissue machine, the press felt comprising:
a base structure providing the dimensional stability at least in a machine direction and a cross machine direction of said felt, said base structure including a first side and a second side; a batt fiber structure comprising a plurality of batt fiber layers attached to said base structure which provide a paper contacting side and a machine contacting side of said felt, said paper contacting side facing said first side of said base structure and said machine contacting side facing said second side of said base structure; a plurality of polymeric one of beads and strands made from a compressive resilient polymeric material arranged on at least one of said first side and said second side of said base structure, said plurality of polymeric one of beads and strands arranged on said at least one side have a longitudinal expansion at least partially in the machine direction of said press felt, are arranged side-by-side when viewed in the cross machine direction of said felt to generate space between adjacent polymeric one of beads and strands and have been formed on said at least one side of said base structure by applying said polymeric material in one of a viscous state and a paste-like state onto said at least one side of said base structure and subsequently causing hardening of said polymeric material, wherein at least one of said batt fiber layers is arranged on said at least one side of said base structure with said plurality of polymeric one of beads and strands to cover both said at least one side and said plurality of polymeric one of beads and strands applied thereon.