IE41039L - Absorbent structure - Google Patents
Absorbent structureInfo
- 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
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]
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)
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 |
-
1975
- 1975-04-30 SE SE7505064A patent/SE7505064L/en unknown
- 1975-05-01 AU AU80722/75A patent/AU8072275A/en not_active Expired
- 1975-05-02 IT IT22971/75A patent/IT1037822B/en active
- 1975-05-02 GB GB18526/75A patent/GB1500053A/en not_active Expired
- 1975-05-02 IE IE988/75A patent/IE41039B1/en unknown
- 1975-05-02 CA CA226,084A patent/CA1030798A/en not_active Expired
- 1975-05-02 ES ES437384A patent/ES437384A1/en not_active Expired
- 1975-05-06 JP JP50054110A patent/JPS50160566A/ja active Pending
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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