Title:
METHOD FOR PRODUCING MULTI-PLY PAPER AND MULTI-PLY PAPER
Document Type and Number:
Japanese Patent JP2006037288
Kind Code:
A
Abstract:
To provide a method for producing a multi-ply paper by laminating a plurality of wet paper layers and giving a multi-ply paper having sufficiently improved interlaminar strength with a small amount of chemicals.
A paper strengthening agent is sprayed from a sprayer 7 to the laminating part of wet paper sheets 6a and 6b. The interlaminar strength is sufficiently improved especially by using an acrylamide-acrylic acid copolymer as the paper strengthening agent and spraying only a small amount of the agent at a rate of 0.02-0.06 g/m2, more preferably 0.025-0.05 g/m2 in terms of solid weight.
Inventors:
AOKI SHIGEKI
KUROTANI NAOSHI
MATSUMURA KENICHI
KUROTANI NAOSHI
MATSUMURA KENICHI
Application Number:
JP2004220451A
Publication Date:
February 09, 2006
Filing Date:
July 28, 2004
Export Citation:
Assignee:
DAIO SEISHI KK
International Classes:
D21H19/20; D21H21/18; D21H27/00
Attorney, Agent or Firm:
Masaru Ishihara