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Patent Searching and Data


Title:
FORMER FOR FORMING PAPER WEB
Document Type and Number:
Japanese Patent JPS6433296
Kind Code:
A
Abstract:

PURPOSE: To provide a former for forming a paper web, having a good forming property and a good drainage capacity by setting the sum of wrapping angles, a distance between forming rolls, and the length of a free web between the forming rolls in specific ranges, respectively.

CONSTITUTION: The sum of a wrapping angle α and a wrapping angle β is set to be larger than 165 degree, and a distance between a forming roll 5 and a forming roll 7 is set to be smaller than about one tenth of the diameter of the forming roll 7. The length of a free web between the forming roll 5 and the forming roll 7 is set to 0.1-0.6 m. The former thus obtained is especially suitable for producing a thick multi-layered paper wherein the formation of the respective layers is important.


Inventors:
ERITSUKU ARUBERUTO NIIKOTSUPU
Application Number:
JP17687788A
Publication Date:
February 03, 1989
Filing Date:
July 15, 1988
Export Citation:
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Assignee:
VALMET PAPER MACHINERY INC
International Classes:
D21F11/04; D21F9/00; D21F9/02; (IPC1-7): D21F9/02; D21F11/04
Attorney, Agent or Firm:
Minoru Nakamura (4 outside)