TITLE: A FLAT STRUCTURE PERMEABLE TO LIQUID, AND A METHOD FOR MANUFACTURING
SUCH A STRUCTURE.
European Patent Application EP0250421 A1

ABSTRACT:
Abstract not available for EP0250421
Abstract of corresponding document: WO8605219
A flat structure permeable to liquid, especially to a press felt for
use in a papermaking machine, the structure being made up for a body
(1) made of a castable polymer, the body having holes (2) formed during
the casting process and possibly cavities (6), the diameter of the
holes increasing substantially progressively from one surface to the
other in such a way that the web-side surface is microporous and the
other surface has pores substantially more open. The invention also
relates to a method for the manufacture of such a structure.

INVENTORS:
Sorsa, Seppo

APPLICATION NUMBER: EP19860901874
PUBLICATION DATE: 01/07/1988
FILING DATE: 02/28/1986

ASSIGNEE: NOKIA OY AB (FI)
INTERNATIONAL CLASSES: D21F7/08; D21F1/00; D21F1/10; D21F7/08; D21F1/00; D21F1/10; (IPC1-7):
D21F1/10; D21F7/08
EUROPEAN CLASSES: D21F1/00E4

OTHER REFERENCES:
See references of WO 8605219A1