CA2020566A1 - Absorbent paper comprising polymer-modified fibrous pulps and wet-laying process for the production thereof - Google Patents

Absorbent paper comprising polymer-modified fibrous pulps and wet-laying process for the production thereof

Info

Publication number
CA2020566A1
CA2020566A1 CA2020566A CA2020566A CA2020566A1 CA 2020566 A1 CA2020566 A1 CA 2020566A1 CA 2020566 A CA2020566 A CA 2020566A CA 2020566 A CA2020566 A CA 2020566A CA 2020566 A1 CA2020566 A1 CA 2020566A1
Authority
CA
Canada
Prior art keywords
wet
pulps
polymer
modified fibrous
laying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2020566A
Other languages
French (fr)
Other versions
CA2020566C (en
Inventor
Larry Neil Mackey
Seyed Ebrahim Seyed-Rezai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Paper Science and Technology Inc
Original Assignee
Procter and Gamble Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of CA2020566A1 publication Critical patent/CA2020566A1/en
Application granted granted Critical
Publication of CA2020566C publication Critical patent/CA2020566C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/20—Chemically or biochemically modified fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/14—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of cellulose fibres only
    • D21H5/141—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of cellulose fibres only of fibrous cellulose derivatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/28—Polysaccharides or their derivatives

Abstract

Processes are described for making highly absorbent tissues and towels by wet-laying pulps comprising particular polycarboxylate polymer-modified fibrous pulps such as mildly hydrolyzed methyl acrylate-grafted softwood kraft pulps; these pulps have distinct protonated and alkali-metal-cation-exchanged states. The wet-laying processes are adapted to exploit the very different behavior of the polymer-modified fibrous pulps in function of the two states. The preferred wet-laying processes described herein are continuous processes embodying one or more on-line chemical treatment steps which chemically switch state of the polymer-modified fibrous pulp component in a wet web on the papermaking machine to improve the processing thereof by averting or minimizing tendencies to mechanically or thermally degrade.
CA002020566A 1989-07-11 1990-07-06 Absorbent paper comprising polymer-modified fibrous pulps and wet-laying process for the production thereof Expired - Lifetime CA2020566C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/378,154 US4986882A (en) 1989-07-11 1989-07-11 Absorbent paper comprising polymer-modified fibrous pulps and wet-laying process for the production thereof
US378,154 1989-07-11

Publications (2)

Publication Number Publication Date
CA2020566A1 true CA2020566A1 (en) 1991-01-12
CA2020566C CA2020566C (en) 1996-01-09

Family

ID=23491954

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002020566A Expired - Lifetime CA2020566C (en) 1989-07-11 1990-07-06 Absorbent paper comprising polymer-modified fibrous pulps and wet-laying process for the production thereof

Country Status (12)

Country Link
US (1) US4986882A (en)
EP (1) EP0408128B1 (en)
JP (1) JP2874973B2 (en)
KR (1) KR0180014B1 (en)
AT (1) ATE128500T1 (en)
AU (1) AU624009B2 (en)
CA (1) CA2020566C (en)
DE (1) DE69022646T2 (en)
DK (1) DK0408128T3 (en)
ES (1) ES2077014T3 (en)
GR (1) GR3017910T3 (en)
MX (1) MX164424B (en)

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Also Published As

Publication number Publication date
AU624009B2 (en) 1992-05-28
DE69022646D1 (en) 1995-11-02
ES2077014T3 (en) 1995-11-16
KR910003219A (en) 1991-02-27
DE69022646T2 (en) 1996-04-18
GR3017910T3 (en) 1996-01-31
EP0408128A3 (en) 1993-07-07
MX164424B (en) 1992-08-12
DK0408128T3 (en) 1995-12-18
EP0408128B1 (en) 1995-09-27
KR0180014B1 (en) 1999-05-15
JP2874973B2 (en) 1999-03-24
EP0408128A2 (en) 1991-01-16
AU5881790A (en) 1991-01-17
JPH03130494A (en) 1991-06-04
US4986882A (en) 1991-01-22
ATE128500T1 (en) 1995-10-15
CA2020566C (en) 1996-01-09

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