Title:
FELT FOR MAKING PAPER AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3187942
Kind Code:
B2
Abstract:
PURPOSE: To provide the felt holding good water permeability without causing a depilation phenomenon, enhanced in surface smoothness by the formation of the dense surface, and used for the production of paper, and to provide the method for producing the same.
CONSTITUTION: The felt for the production of paper comprises a base layer 1 and a surface layer 2 formed on at least one surface of the base layer, and the base layer 1 and the surface layer 2 are incorporated by needling. The surface layer 2 contains dividing fine fibers divided by the needling and non- dividing fibers, and before divided into the divided fibers the dividing fibers are compounded with the non-dividing fibers in a ratio of 40-90wt.% based on the total amount of the dividing fibers and the non-dividing fibers. The base layer 1 comprises a base cloth 11 and ordinary pad fiber layers 12, 13 placed on the upper and lower surfaces. Each of the dividing fibers has a circular cross section and a fineness of 4-20 deniers. The cross-sectional shape of a material composing of the dividing fiber is an eight petal type, and the cross- sectional shape of the other material is a fan type divided into eight fans. The thickness of the surface layer is 0.35-1.2mm, and the air permeability is 10-30cm3/ sec/cm2.
Inventors:
Takeshi Furukawa
Application Number:
JP15594892A
Publication Date:
July 16, 2001
Filing Date:
May 23, 1992
Export Citation:
Assignee:
Nippon Felt Co., Ltd.
International Classes:
D01F8/04; D04H1/46; D04H1/492; D21F7/08; (IPC1-7): D21F7/08; D04H1/46
Domestic Patent References:
| JP3269147A | ||||
| JP60502012A |
Attorney, Agent or Firm:
Kiyomichi Kojima