CA2145198A1 - Crosslinked cellulose products and method for their preparation - Google Patents
Crosslinked cellulose products and method for their preparationInfo
- Publication number
- CA2145198A1 CA2145198A1 CA002145198A CA2145198A CA2145198A1 CA 2145198 A1 CA2145198 A1 CA 2145198A1 CA 002145198 A CA002145198 A CA 002145198A CA 2145198 A CA2145198 A CA 2145198A CA 2145198 A1 CA2145198 A1 CA 2145198A1
- Authority
- CA
- Canada
- Prior art keywords
- crosslinking
- sheeted
- crosslinked
- wet
- products
- 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
Links
- 229920002678 cellulose Polymers 0.000 title abstract 2
- 239000001913 cellulose Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000000835 fiber Substances 0.000 abstract 5
- 238000004132 cross linking Methods 0.000 abstract 4
- 239000000376 reactant Substances 0.000 abstract 3
- 239000004902 Softening Agent Substances 0.000 abstract 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/09—Sulfur-containing compounds
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/10—Phosphorus-containing compounds
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
- D21H17/15—Polycarboxylic acids, e.g. maleic acid
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/22—Agents rendering paper porous, absorbent or bulky
- D21H21/24—Surfactants
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
- D21H23/06—Controlling the addition
- D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
- D21H23/06—Controlling the addition
- D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
- D21H23/18—Addition at a location where shear forces are avoided before sheet-forming, e.g. after pulp beating or refining
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/24—Addition to the formed paper during paper manufacture
- D21H23/26—Addition to the formed paper during paper manufacture by selecting point of addition or moisture content of the paper
- D21H23/28—Addition before the dryer section, e.g. at the wet end or press section
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530007—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium being made from pulp
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530437—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a part with elevated absorption means
- A61F2013/530452—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a part with elevated absorption means having chemically-stiffened fibres
- A61F2013/530474—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a part with elevated absorption means having chemically-stiffened fibres being cross-linked
Abstract
The invention is a method of making a wet formed, sheeted, readily reslurriable sheeted crosslinked cellulose and the products made by the method. Crosslinked wood pulp fibers tend to be quite brittle. If crosslinked while in sheeted form, the sheets cannot be readily defibred, either in a wet or dry state, without serious fiber degradation. The sheet products of the present invention can be easily redispersed or repulped in water without significant fiber breakage. The present products are made by including within the sheet, while still in wet form, a debonding or softening agent which is preferably added before the latent crosslinking reactant. Most preferably the debonder is added prior to the headbox of a paper machine and the crosslinking reactant is applied near theend of the forming wire or at the press section.
The treated sheet is dried conventionally. Crosslinking may occur entirely during drying or during a period of additional heating, usually at a temperature in excess of 100 °C for a short period of time.
Conventional debonding agents and crosslinking reactants are suitable.
The softening agent apparently reduces or prevents adhesive bonding between adjacent fibers caused by polymer formation external to the fibers under reaction conditions.
The treated sheet is dried conventionally. Crosslinking may occur entirely during drying or during a period of additional heating, usually at a temperature in excess of 100 °C for a short period of time.
Conventional debonding agents and crosslinking reactants are suitable.
The softening agent apparently reduces or prevents adhesive bonding between adjacent fibers caused by polymer formation external to the fibers under reaction conditions.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/395,208 US5225047A (en) | 1987-01-20 | 1989-08-17 | Crosslinked cellulose products and method for their preparation |
US07/820,323 US5437418A (en) | 1987-01-20 | 1992-01-13 | Apparatus for crosslinking individualized cellulose fibers |
US07/820,333 US5366591A (en) | 1987-01-20 | 1992-01-13 | Method and apparatus for crosslinking individualized cellulose fibers |
CA002145198A CA2145198C (en) | 1987-01-20 | 1993-06-25 | Crosslinked cellulose products and method for their preparation |
ES93916799T ES2140464T3 (en) | 1987-01-20 | 1993-06-25 | PRODUCTS OF RETICULATED CELLULOSE AND METHOD FOR ITS PREPARATION. |
AU46532/93A AU4653293A (en) | 1987-01-20 | 1993-06-25 | Crosslinked cellulose products and method for their preparation |
DE69327327T DE69327327T2 (en) | 1987-01-20 | 1993-06-25 | NETWORKED CELLULAR PRODUCTS AND METHOD FOR THEIR PRODUCTION |
PCT/US1993/006124 WO1995000705A1 (en) | 1987-01-20 | 1993-06-25 | Crosslinked cellulose products and method for their preparation |
EP93916799A EP0656969B1 (en) | 1987-01-20 | 1993-06-25 | Crosslinked cellulose products and method for their preparation |
US08/087,186 US5399240A (en) | 1987-01-20 | 1993-07-02 | Crosslinked cellulose products and method for their preparation |
US08/235,723 US5556976A (en) | 1987-01-20 | 1994-04-29 | Reactive cyclic N-sulfatoimides and cellulose crosslinked with the imides |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US472987A | 1987-01-20 | 1987-01-20 | |
US07/395,208 US5225047A (en) | 1987-01-20 | 1989-08-17 | Crosslinked cellulose products and method for their preparation |
CA002145198A CA2145198C (en) | 1987-01-20 | 1993-06-25 | Crosslinked cellulose products and method for their preparation |
PCT/US1993/006124 WO1995000705A1 (en) | 1987-01-20 | 1993-06-25 | Crosslinked cellulose products and method for their preparation |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2145198A1 true CA2145198A1 (en) | 1995-01-05 |
CA2145198C CA2145198C (en) | 2004-04-27 |
Family
ID=27427221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002145198A Expired - Lifetime CA2145198C (en) | 1987-01-20 | 1993-06-25 | Crosslinked cellulose products and method for their preparation |
Country Status (7)
Country | Link |
---|---|
US (2) | US5225047A (en) |
EP (1) | EP0656969B1 (en) |
AU (1) | AU4653293A (en) |
CA (1) | CA2145198C (en) |
DE (1) | DE69327327T2 (en) |
ES (1) | ES2140464T3 (en) |
WO (1) | WO1995000705A1 (en) |
Families Citing this family (107)
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---|---|---|---|---|
US5225047A (en) * | 1987-01-20 | 1993-07-06 | Weyerhaeuser Company | Crosslinked cellulose products and method for their preparation |
US5230959A (en) | 1989-03-20 | 1993-07-27 | Weyerhaeuser Company | Coated fiber product with adhered super absorbent particles |
SE469843B (en) * | 1992-02-14 | 1993-09-27 | Stora Kopparbergs Bergslags Ab | Fluff pulp and method when preparing fluff pulp |
US5547541A (en) * | 1992-08-17 | 1996-08-20 | Weyerhaeuser Company | Method for densifying fibers using a densifying agent |
US6340411B1 (en) | 1992-08-17 | 2002-01-22 | Weyerhaeuser Company | Fibrous product containing densifying agent |
US5589256A (en) * | 1992-08-17 | 1996-12-31 | Weyerhaeuser Company | Particle binders that enhance fiber densification |
US6391453B1 (en) * | 1992-08-17 | 2002-05-21 | Weyernaeuser Company | Binder treated particles |
US5300192A (en) * | 1992-08-17 | 1994-04-05 | Weyerhaeuser Company | Wet laid fiber sheet manufacturing with reactivatable binders for binding particles to fibers |
US5998032A (en) * | 1992-08-17 | 1999-12-07 | Weyerhaeuser Company | Method and compositions for enhancing blood absorbence by superabsorbent materials |
US5308896A (en) * | 1992-08-17 | 1994-05-03 | Weyerhaeuser Company | Particle binders for high bulk fibers |
US5543215A (en) * | 1992-08-17 | 1996-08-06 | Weyerhaeuser Company | Polymeric binders for binding particles to fibers |
JP3539957B2 (en) * | 1992-08-17 | 2004-07-07 | ウェヤーハウザー・カンパニー | Particle binder |
US5352480A (en) * | 1992-08-17 | 1994-10-04 | Weyerhaeuser Company | Method for binding particles to fibers using reactivatable binders |
US5807364A (en) * | 1992-08-17 | 1998-09-15 | Weyerhaeuser Company | Binder treated fibrous webs and products |
US5538783A (en) * | 1992-08-17 | 1996-07-23 | Hansen; Michael R. | Non-polymeric organic binders for binding particles to fibers |
US5350423A (en) * | 1992-09-23 | 1994-09-27 | Burlington Industries Inc. | Fabric finishing procedure |
WO1995025201A1 (en) * | 1994-03-15 | 1995-09-21 | Sequa Chemicals, Inc. | Paper opacifier |
EP0750484B1 (en) * | 1994-03-18 | 1998-12-30 | The Procter & Gamble Company | Fluid acquisition and distribution member for absorbent core |
KR100391244B1 (en) * | 1994-03-18 | 2003-12-01 | 더 프록터 앤드 갬블 캄파니 | Process for producing individualized polycarboxylic acid crosslinked cellulose fibers |
US6184271B1 (en) | 1994-03-25 | 2001-02-06 | Weyerhaeuser Company | Absorbent composite containing polymaleic acid crosslinked cellulosic fibers |
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EP0752028B1 (en) * | 1994-03-25 | 2004-05-12 | Weyerhaeuser Company | Cellulosic products using high-bulk cellulosic fibers |
US5998511A (en) * | 1994-03-25 | 1999-12-07 | Weyerhaeuser Company | Polymeric polycarboxylic acid crosslinked cellulosic fibers |
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US5730839A (en) * | 1995-07-21 | 1998-03-24 | Kimberly-Clark Worldwide, Inc. | Method of creping tissue webs containing a softener using a closed creping pocket |
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- 1989-08-17 US US07/395,208 patent/US5225047A/en not_active Expired - Lifetime
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1993
- 1993-06-25 AU AU46532/93A patent/AU4653293A/en not_active Abandoned
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- 1993-06-25 ES ES93916799T patent/ES2140464T3/en not_active Expired - Lifetime
- 1993-07-02 US US08/087,186 patent/US5399240A/en not_active Expired - Lifetime
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ES2140464T3 (en) | 2000-03-01 |
US5399240A (en) | 1995-03-21 |
EP0656969B1 (en) | 1999-12-15 |
CA2145198C (en) | 2004-04-27 |
WO1995000705A1 (en) | 1995-01-05 |
DE69327327T2 (en) | 2000-05-11 |
EP0656969A1 (en) | 1995-06-14 |
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