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Title:
WATER-DISAGGREGATIVE PAPER WITH MULTILAYER STRUCTURE AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JPH04370300
Kind Code:
A
Abstract:

PURPOSE: To obtain the title paper with high mechanical strength after chemical impregnation, excellent in water disaggregation and productivity, useful as e.g. cleansing tissues, by putting two kinds of paper stock each containing specified amount of a paper strengthening agent to multilayer papermaking process so that said two kinds of paper stock make up the respective outermost layers followed by drying.

CONSTITUTION: (A) The first paper stock 10 containing 10-60wt.%, on a dry basis, of a paper strengthening agent, i.e., carboxymethylated pulp salt, water-soluble PVA, water-soluble PVA fibers or a mixture thereof, and (B) the second paper stock 10' containing ≤5wt.%, on a dry basis, of such agent, are put to multilayer papermaking process so that the above two kinds of paper stock 10, 10' make up the respective outermost layers 14,15 of a wet paper 16, and the outermost layer 14 consisting of the second paper stock 10' is dried as the contact surface for a contact-type dryer 17, thus obtaining the objective water-disaggregative paper 1. It is preferable that said carboxymethylated pulp salt be a sodium salt or mixed salt containing the same with the substitution degree of 0.2-0.6.


Inventors:
Takeuchi, Naoto
Okada, Kazuya
Application Number:
JP1991000167602
Publication Date:
December 22, 1992
Filing Date:
June 12, 1991
Export Citation:
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Assignee:
UNI CHARM CORP
International Classes:
A47L13/17; D21H11/20; D21H13/16; D21H17/25; D21H17/36; D21H21/18; D21H27/00; D21H27/30; (IPC1-7): A47L13/17; D21H17/25; D21H17/36; D21H27/00; D21H27/30