IE41039L - Absorbent structure - Google Patents

Absorbent structure

Info

Publication number
IE41039L
IE41039L IE750988A IE98875A IE41039L IE 41039 L IE41039 L IE 41039L IE 750988 A IE750988 A IE 750988A IE 98875 A IE98875 A IE 98875A IE 41039 L IE41039 L IE 41039L
Authority
IE
Ireland
Prior art keywords
pulp
hydrophilic
web
fibres
wood pulp
Prior art date
Application number
IE750988A
Other versions
IE41039B1 (en
Original Assignee
Procter & Gamble
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 & Gamble filed Critical Procter & Gamble
Publication of IE41039L publication Critical patent/IE41039L/en
Publication of IE41039B1 publication Critical patent/IE41039B1/en

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
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/26—Special paper or cardboard manufactured by dry method; Apparatus or processes for forming webs by dry method from mainly short-fibre or particle material, e.g. paper pulp
    • 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
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Epidemiology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)

Abstract

1500053 Hydrophillic wood pulp baths PROCTER & GAMBLE CO 2 May 1975 [7 March 1975] 18526/75 Heading D1R An absorbent air-laid structure comprises bleached hydrophilic defibrated wood pulp fibres having an average fibre length of at least 2 mm and an average fibre diameter of 0.02 to 0.06 mm, the structure having a density of 0.04 to 0.18 g/c.c. Preferably the fibres are 2 to 55 mm long. Soft woods (gymnosperms) e.g. spruce are steamed to plasticise the lignin and ground. The pulp is treated with dilute sulphuric acid to destroy micro-organisms and with diethylene triamine pentaacetic acid to remove metal ions and washed with de-ionised water. The pulp is rendered hydrophilic by bleaching with a hot aqueous hydrogen peroxide or sodium peroxide in the presence of sodium silicate and magnesium sulphate, or by bleaching with a hydrosulphite and its hydrophilic character further increased by slurrying with acetone/ methanol to extract hydrophobic lipids. The hydrophilic pulp is comminuted and air laid and the web compressed in a hydraulic die or by rolling. The density of the web is measured under load of 5 g/cm<SP>2</SP>. The web may include delignified wood pulp, rayon, cotton, cellulose acetate, wool and asbestos fibres. [GB1500053A]
IE988/75A 1974-05-03 1975-05-02 Improvements relating to absorbent fibrous structures IE41039B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46658074A 1974-05-03 1974-05-03
US55636175A 1975-03-07 1975-03-07

Publications (2)

Publication Number Publication Date
IE41039L true IE41039L (en) 1975-11-03
IE41039B1 IE41039B1 (en) 1979-10-10

Family

ID=27041710

Family Applications (1)

Application Number Title Priority Date Filing Date
IE988/75A IE41039B1 (en) 1974-05-03 1975-05-02 Improvements relating to absorbent fibrous structures

Country Status (8)

Country Link
JP (1) JPS50160566A (en)
AU (1) AU8072275A (en)
CA (1) CA1030798A (en)
ES (1) ES437384A1 (en)
GB (1) GB1500053A (en)
IE (1) IE41039B1 (en)
IT (1) IT1037822B (en)
SE (1) SE7505064L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655758A (en) * 1982-12-16 1987-04-07 Johnson & Johnson Products, Inc. Microbial polysaccharide articles and methods of production
ZA92308B (en) 1991-09-11 1992-10-28 Kimberly Clark Co Thin absorbent article having rapid uptake of liquid
ES2229811T3 (en) 1998-12-10 2005-04-16 Kimberly-Clark Worldwide, Inc. ABSORBENT BODY THAT INCLUDES A CALANDRATED COMPOSITE MATERIAL, OF LOW THICKNESS, PNEUMATICALLY APPLIED AND PROCESS FOR THE MANUFACTURE OF SUCH MATERIAL.
US6368609B1 (en) 1999-04-12 2002-04-09 Kimberly-Clark Worldwide, Inc. Absorbent structure including a thin, calendered airlaid composite and a process for making the composite
US7544635B2 (en) * 2001-07-17 2009-06-09 Zhi-Wei Liang Process for changing hydrophilic/hydrophobic characteristics
ITTO20120006A1 (en) * 2012-01-09 2013-07-10 Hypucem S R L PROCESS TO DESTRUCTURE A CELLULOSE PASTE, PRODUCT OBTAINED AND USE OF THE PRODUCT

Also Published As

Publication number Publication date
JPS50160566A (en) 1975-12-25
CA1030798A (en) 1978-05-09
SE7505064L (en) 1975-11-04
GB1500053A (en) 1978-02-08
IT1037822B (en) 1979-11-20
IE41039B1 (en) 1979-10-10
AU8072275A (en) 1976-11-04
ES437384A1 (en) 1977-04-16

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