US3395708A - Method for improving a fluffed fibrous wood pulp batt for use in sanitary products and the products thereof - Google Patents

Method for improving a fluffed fibrous wood pulp batt for use in sanitary products and the products thereof Download PDF

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Publication number
US3395708A
US3395708A US59300466A US3395708A US 3395708 A US3395708 A US 3395708A US 59300466 A US59300466 A US 59300466A US 3395708 A US3395708 A US 3395708A
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Prior art keywords
wood pulp
batt
products
fibrous wood
improving
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English (en)
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Laurence R B Hervey
Donald K George
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Riegel Textile Corp
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Riegel Textile Corp
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Filing date
Publication date
Priority to NL135226D priority Critical patent/NL135226C/xx
Application filed by Riegel Textile Corp filed Critical Riegel Textile Corp
Priority to US59300466 priority patent/US3395708A/en
Priority to GB497567A priority patent/GB1180801A/en
Priority to AT99267A priority patent/AT288601B/de
Priority to CH168467A priority patent/CH453060A/de
Priority to DK66867A priority patent/DK127258C/da
Priority to ES336599A priority patent/ES336599A1/es
Priority to DE1561756A priority patent/DE1561756C2/de
Priority to FR94527A priority patent/FR1510789A/fr
Priority to NL6702327A priority patent/NL6702327A/xx
Priority to BE694400D priority patent/BE694400A/xx
Priority to LU53062D priority patent/LU53062A1/xx
Priority to SE778267A priority patent/SE318187B/xx
Application granted granted Critical
Publication of US3395708A publication Critical patent/US3395708A/en
Priority to DE19691932012 priority patent/DE1932012A1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • A61F13/505—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with separable parts, e.g. combination of disposable and reusable parts
    • 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
    • A61F13/534—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 an inhomogeneous composition through the thickness of the pad
    • A61F13/53409—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 an inhomogeneous composition through the thickness of the pad having a folded core
    • A61F13/53427—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 an inhomogeneous composition through the thickness of the pad having a folded core having an e-folded cross-section
    • 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
    • A61L15/20—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing organic materials
    • 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
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/48—Surfactants
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic 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
    • D21H17/07—Nitrogen-containing compounds
    • 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
    • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
    • A61F13/15211—Properties of the article, e.g. stiffness or absorbency soluble or disintegratable in liquid
    • 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
    • A61F13/534—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 an inhomogeneous composition through the thickness of the pad
    • 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
    • A61F13/534—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 an inhomogeneous composition through the thickness of the pad
    • A61F13/53409—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 an inhomogeneous composition through the thickness of the pad having a folded core
    • 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
    • A61F13/45—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 shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F2013/49068—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline
    • A61F2013/49076—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline as "I"-shaped
    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
    • 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
    • A61F2013/530131—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 in fibre but being not 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
    • A61F13/56—Supporting or fastening means
    • A61F2013/5694—Other non adhesive means than hook and loop-type fastener or belts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249962—Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]
    • Y10T428/249964—Fibers of defined composition
    • Y10T428/249965—Cellulosic

Definitions

  • ABSTRACT OF THE DISCLOSURE A method for improving a fluffed fibrous wood pulp batt and the resulting product thereof comp-rising impregnating a wet slurry of wood pulp with a cationic debonding agent, forming the wet slurry into a wet pressed wood pulp sheet, drying, mechanically fiberizing the sheet and air-laying the fibers to form a fluffed fibrous wood pulp batt.
  • This method and improved product provides a uffed fibrous wood pulp batt which is substantially completely fiberized to eliminate undesirable residual sheet particles and minimize fiber breakage and dust to provide longer, stronger andmore uniform fibers for producing greater loft, moisture absorption and strength in the batt to adapt the same for use in sanitary products or the like.
  • This invention relates to a novel method for improving a flufied fibrous wood pulp batt wherein the iiuffed fibrous wood pulp is substantially completely fiberized to eliminate undesi-ra-ble residual untiberized sheet particles and minimize ber breakage and dust so as to provide longer, stronger and more uniform fibers for producing greater loft, moisture absorption and strength in the batt. Additionally, the invention relates to the utilization of the improved fiuffed fibrous wood pulp batt in the construction of diapers, sanitary napkins, bandages, nursing pads, etc., which are collectively designated hereinafter as sanitary products.
  • fluffed fibrous wood pulp batts for use in sanitary products or the like have been formed by mechanically fiberizing a dried wet pressed wood pulp sheet with a hammermill or other suitable mechanical means and forming the resulting fibers into a coherent web or batt with an air-laying device. Due to the difiiculty of mechanically fiberizing the pulp sheet, these prior fiberizing operations were dusty and necessarily utilized a large energy requirement. The resulting fiberized liuffed wood pulp batt had the undesirable characteristics of not being fully fiberized resulting in nonuniformity of fiber lengths, fiber breakage, residual sheet particles, etc. which reduced loft, moisture labsorption and strength in the batt. Batts formed by these conventional methods often had a rough granular texture and did not provide maximum comfort to the wearer when used in sanitary products worn against the body to absorb body liuids.
  • the novel method of the present invention overcomes the above problems and, therefore, rprovides an improved fluffed wood pulp batt and resulting improved sanitary products utilizing the improved flutfed wood pulp batt.
  • FIGURE 1 is a reduced perspective view of a sanitary napkin utilizing the improved fiuffed fibrous wood pulp batt of this invention
  • FIGURE 2 is a full scale cross-sectional view of the sanitary napkin of FIGURE 1 taken substantially along the line 2 2 of FIGURE 1;
  • FIGURE 3 is a reduced perspective view of a diaper 3,395,708 Patented Aug. 6, 1968 ice pad utilizing the improved fluffed fibrous wood pulp batt of this invention and illustrated as being held in a holder for application to a baby; and
  • FIGURE 4 is a full scale cross-sectional view of the diaper pad of FIGURE 3 taken substantiallyalong the line 4 4 of FIGURE 3.
  • a fiuffed fibrous wood pulp batt adapted for use in sanitary products or the like, may be improved by being substantially completely liberized so as to eliminate undesirable residual sheet particles and minimize fiber breakage and dust providing longer, stronger and more uniform fibers for producing g-reater loft, softness, moisture absorption and strength in the batt.
  • the improvement is accomplished by impregnating a wet slurry of wood pulp with a cationic debonding agent, forming the wet slurry into a wet pressed wood pulp sheet, and mechanically fiberizing the dried sheet to form a substantially completely fiberized fluffed fibrous wood pulp batt.
  • wet pressed wood pulp sheets are formed by the utilization of a pulping operation which reduces wood into pulp and forms a wet slurry of wood pulp. From the pulping process, the wet slurry of Wood pulp is led to a conventional paper machine or other suitable apparatus and formed into a sheet which is then wet pressed and dried.
  • the above Operations are conventional and well known to those with ordinary skill in the art and, therefore, further details herein are deemed unnecessary.
  • the cationic debonding agent it has been found most advantageous to add the cationic debonding agent to the wet slu-rry of wood pulp following the pulping operation, preferably in a stock chest or other suitable storage means prior to the papermaking process. It has been found preferable to allow the cationic debonding agent to remain in the wet slurry of unfiberized wood pulp for at least approximately ten minutes before forming the wet pressed wood pulp sheet on the paper machine.
  • the cationic debondin-g agent due to the positive charge thereof, is attracted to the wood pulp and substantially absorbed onto it and weakens the inherent bonding characteristics of the wood pulp during t-he formation of the wet pressed Wood pulp sheet on the paper machine.
  • this action will allow the wood pulp sheet to be more easily mechanically fiberized for forming a substantially completely fiberized, iiuffed, wood pulp batt resulting in the ab-ove-described improved qualities of the fiberized, fluffed, woord pulp batt.
  • Suitable cationic debonding agents for accomplishing the above-described purposes of the present invention fall within ⁇ the class of long chain cationic surfactants, preferably with at least twelve carbon atoms in at least one alkyl chain, and illustrative, but non-limiting, specific examples of same are fatty dialkyl amine quaternary salts, mono fatty alkyl tertiary amine salts, primary amine salts, and unsaturated fatty alkyl amine salts.
  • the amount of debonding agent to be added to the wet slurry of wood pulp may vary substantially, but in actual practice it has been found that amounts of about 0.1% to 5.0%, based on the weight of dry wood pulp, may be used. Amounts less than 0.1% provide very little irnprovement in the fiberization process. A typical treatment which has been found to give very good results is 1.5% of di hydrogenated tallow dimethyl ammonium chloride or 1.0% of di-soya dimethyl ammonium chloride.
  • the improved fiuffe'd fibrous wood pulp batt is particularly adaptable for use in the manufacture of sanitary products, above described, or for other similar products which require an interior pad of dispersible fibrous absorbent material adapted to absorb the body liuids of the wearer.
  • An interior pad formed from the improved fiuffed 3 fibrous wood pulp batt of this invention is particularly desirable for use with a fiushable paper' wiiappe'r or cover material of the type disclosed is copending application Ser. No. 572,929, now U.S. Patent No. 3,370,590, issued Feb. 27, 1968, assigned to the same assignee as the present invention, for producing ⁇ a completely iiushable sanitary product.
  • a sanitary napkin may be formed which comprises a wrapper or cover layer for completely enclosing a layered, folded or otherwise formed pad 12 utilizing the improved ufied fibrous wood pulp batt 14 of the present invention.
  • the wrapper or cover material 10 ⁇ ⁇ may be woven gauze or other conventional materials or it may be formed of the fiushable paper described in the above-mentioned copending application.
  • This wrapper or cover material will be manufactured in the usual configuration and secured around the interior pad 12 to form attachment tabs on either side of the interior pad for attachment to the normal belt or holding means when utilized by the wearer.
  • the interior pad 12 is formed from a cut fiuffed fibrous Wood pulp batt 14 having a cut layer of creped cellulose wadding 16 superimposed thereon.
  • the batt 14 and the creped cellulose wadding layer 16 are then folded with multiple reverse folds extending in the longitudinal direction of the pad to form a multi-layer interior pad 12, as shown in FIGURE 2.
  • the interior pad 12 may also include a conventional moisture barrier 18 formed of any suitable liquid impervious material.
  • a diaper pad may be formed which comprises a wrapper or cover layer 20 for completely enclosing a layered, folded or otherwise formed interior pad 22 utilizing the improved liuffed fibrous wood pulp batt 24 formed according to this invention.
  • the wrapper or cover material 20 may be woven gauze or other conventional materials or it may be formed of the fiushable paper described in the above-mentioned copending application. This wrapper or cover material is formed in a generally rectangular configuration and is secured around the generally rectangular interior pad 22 for use as a diaper pad to be inserted within a holder 26 for placing in position on the body of the wearer.
  • the interior t. 14- pad 22 utilizes two cut layers of fiuffed fibrous wood pulp 24 superimposed 'on'V eachother andhaving layers of creped cellulose wadding 28 superimposed therebetween and on each of the outside surfaces thereof.
  • Method for improving a fluffed fibrous wood pulp batt adapted for use in sanitary products or the like wherein the fluffed fibrous wood p ulp is substantially completely fiberized to ,eliminate undesirable residual sheet particles and minimize fiber. breakage and dust so as to provide longer, stronger and more uniform fibers for producing greater loft, moisture absorption and strength in said batt said method comprising impregnating a wet slurry of wood pulp with a cationic debonding agent, forming said wet slurry into a wet pressed wood pulp sheet, drying, mechanically fiberizing said sheet and airlaying said fibers to form a fiuffyed wood pulp batt.
  • cationic -debonding agent is a long chain cationic surfactant with at least 12 carbon atoms in at least one alkylchain.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical & Material Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
US59300466 1966-11-09 1966-11-09 Method for improving a fluffed fibrous wood pulp batt for use in sanitary products and the products thereof Expired - Lifetime US3395708A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
NL135226D NL135226C (xx) 1966-11-09
US59300466 US3395708A (en) 1966-11-09 1966-11-09 Method for improving a fluffed fibrous wood pulp batt for use in sanitary products and the products thereof
GB497567A GB1180801A (en) 1966-11-09 1967-02-01 Improvements in or relating to Fluffed Fibrous Wood Pulp Batts for use in Sanitary products
AT99267A AT288601B (de) 1966-11-09 1967-02-02 Verfahren zur Herstellung eines flaumigen, faserigen Holzstoffvlieses
CH168467A CH453060A (de) 1966-11-09 1967-02-06 Verfahren zur Herstellung eines flaumigen faserigen Zellstoffmaterials und Verwendung dieses Materials zur Herstellung von sanitären Produkten
DK66867A DK127258C (da) 1966-11-09 1967-02-07 Fremgangsmaade til fremstilling af en pude af bloed,fibroes traepapirmasse,isaer til brug i sanitaere produkter
ES336599A ES336599A1 (es) 1966-11-09 1967-02-08 Metodo para producir un velomullido de pulpa de madera fi- brosa.
DE1561756A DE1561756C2 (de) 1966-11-09 1967-02-09 Verfahren zum Herstellen von Zellulosematerial und unter Verwendung dieses Zellulosematerials hergestellte Hygienewaren
FR94527A FR1510789A (fr) 1966-11-09 1967-02-10 Procédé pour améliorer une nappe pelucheuse de pâte de bois fibreuse pour utilisation dans des articles hygiéniques et les produits ainsi obtenus
NL6702327A NL6702327A (xx) 1966-11-09 1967-02-16
BE694400D BE694400A (xx) 1966-11-09 1967-02-21
LU53062D LU53062A1 (xx) 1966-11-09 1967-02-23
SE778267A SE318187B (xx) 1966-11-09 1967-06-02
DE19691932012 DE1932012A1 (de) 1966-11-09 1969-06-24 Zellulosefasermaterial und Verfahren zur Herstellung desselben

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US59300466 US3395708A (en) 1966-11-09 1966-11-09 Method for improving a fluffed fibrous wood pulp batt for use in sanitary products and the products thereof

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US3395708A true US3395708A (en) 1968-08-06

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AT (1) AT288601B (xx)
BE (1) BE694400A (xx)
CH (1) CH453060A (xx)
DE (1) DE1561756C2 (xx)
DK (1) DK127258C (xx)
ES (1) ES336599A1 (xx)
FR (1) FR1510789A (xx)
GB (1) GB1180801A (xx)
LU (1) LU53062A1 (xx)
NL (2) NL6702327A (xx)
SE (1) SE318187B (xx)

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US3636952A (en) * 1970-04-24 1972-01-25 Riegel Textile Corp Disposable combination flushable diaper and protective cover
US3653382A (en) * 1969-12-22 1972-04-04 Procter & Gamble Expandable airfelt pad
US3654929A (en) * 1966-11-15 1972-04-11 Svenska Cellulosa Ab Body-fluid absorption article
US3665923A (en) * 1970-02-05 1972-05-30 Kimberly Clark Co Flushable sanitary napkin
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US3809089A (en) * 1971-05-26 1974-05-07 B Hedstrom Diaper
US3865112A (en) * 1974-03-05 1975-02-11 Kimberly Clark Co Small size sanitary napkins with improved absorption capability
US3930933A (en) * 1970-11-25 1976-01-06 Riegel Textile Corporation Debonded cellulose fiber pulp sheet and method for producing same
US3932209A (en) * 1969-02-24 1976-01-13 Personal Products Company Low hemicellulose, dry crosslinked cellulosic absorbent materials
US3968798A (en) * 1975-07-03 1976-07-13 Parke, Davis & Company Incontinent pad
US3995640A (en) * 1976-01-05 1976-12-07 Colgate-Palmolive Company Diaper with elastic means
US4057061A (en) * 1974-12-18 1977-11-08 Kabushiki Kaisha Angel Sanitary napkin
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US4208459A (en) * 1970-04-13 1980-06-17 Becker Henry E Bonded, differentially creped, fibrous webs and method and apparatus for making same
US4327729A (en) * 1977-06-27 1982-05-04 The Procter & Gamble Company Low-density disposable absorbent bandage having low stretch, wet strength center ply to provide improved pad integrity in use
WO1982003324A1 (en) * 1981-03-31 1982-10-14 Mitchell James G Absorbent pads,incontinence care products and methods of production
US4448638A (en) * 1980-08-29 1984-05-15 James River-Dixie/Northern, Inc. Paper webs having high bulk and absorbency and process and apparatus for producing the same
US4568341A (en) * 1982-03-10 1986-02-04 James G. Mitchell Absorbent pads, incontinence care products and methods of production
US4917762A (en) * 1984-10-01 1990-04-17 Dalki R Peter Process for manufacturing a liquid absorbing pad
US5019068A (en) * 1990-02-05 1991-05-28 Diana Dolls Fashions, Inc. Washable diaper with absorbent liner
US5324391A (en) * 1990-10-31 1994-06-28 Weyerhaeuser Company Method for crosslinking cellulose fibers
US5399240A (en) * 1987-01-20 1995-03-21 Weyerhaeuser Company Crosslinked cellulose products and method for their preparation
US5415737A (en) * 1994-09-20 1995-05-16 The Procter & Gamble Company Paper products containing a biodegradable vegetable oil based chemical softening composition
US5437418A (en) * 1987-01-20 1995-08-01 Weyerhaeuser Company Apparatus for crosslinking individualized cellulose fibers
US5501768A (en) * 1992-04-17 1996-03-26 Kimberly-Clark Corporation Method of treating papermaking fibers for making tissue
US5510000A (en) * 1994-09-20 1996-04-23 The Procter & Gamble Company Paper products containing a vegetable oil based chemical softening composition
US5556976A (en) * 1987-01-20 1996-09-17 Jewell; Richard A. Reactive cyclic N-sulfatoimides and cellulose crosslinked with the imides
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
US5749863A (en) * 1994-03-18 1998-05-12 The Procter & Gamble Company Fluid acquisition and distribution member for absorbent core
US5830201A (en) * 1994-01-14 1998-11-03 Frederick W. George Flushable diaper and method
US5840787A (en) * 1994-03-25 1998-11-24 Weyerhaeuser Company Cellulosic products using high-bulk cellulosic fibers
US5873979A (en) * 1994-03-18 1999-02-23 The Procter & Gamble Company Preparing individualized polycarboxylic acid crosslinked cellulosic fibers
US5906894A (en) * 1994-03-25 1999-05-25 Weyerhaeuser Company Multi-ply cellulosic products using high-bulk cellulosic fibers
US5998511A (en) * 1994-03-25 1999-12-07 Weyerhaeuser Company Polymeric polycarboxylic acid crosslinked cellulosic fibers
US6184271B1 (en) 1994-03-25 2001-02-06 Weyerhaeuser Company Absorbent composite containing polymaleic acid crosslinked cellulosic fibers
US6264791B1 (en) * 1999-10-25 2001-07-24 Kimberly-Clark Worldwide, Inc. Flash curing of fibrous webs treated with polymeric reactive compounds
US6306251B1 (en) 1994-03-25 2001-10-23 Weyerhaeuser Company Multi-ply cellulosic products using high-bulk cellulosic fibers
US6322665B1 (en) * 1999-10-25 2001-11-27 Kimberly-Clark Corporation Reactive compounds to fibrous webs
US6376011B1 (en) 1999-04-16 2002-04-23 Kimberly-Clark Worldwide, Inc. Process for preparing superabsorbent-containing composites
US6387495B1 (en) 1999-04-16 2002-05-14 Kimberly-Clark Worldwide, Inc. Superabsorbent-containing composites
US6409883B1 (en) 1999-04-16 2002-06-25 Kimberly-Clark Worldwide, Inc. Methods of making fiber bundles and fibrous structures
US20020088582A1 (en) * 2000-02-28 2002-07-11 Burns Barbara Jean Method for adding an adsorbable chemical additive to pulp during the pulp processing and products made by said method
US20020162243A1 (en) * 2001-03-07 2002-11-07 Runge Troy Michael Method for applying chemical additives to pulp during the pulp processing and products made by said method
US6503233B1 (en) 1998-10-02 2003-01-07 Kimberly-Clark Worldwide, Inc. Absorbent article having good body fit under dynamic conditions
US6562192B1 (en) 1998-10-02 2003-05-13 Kimberly-Clark Worldwide, Inc. Absorbent articles with absorbent free-flowing particles and methods for producing the same
US20030131962A1 (en) * 2001-12-18 2003-07-17 Kimberly-Clark Worldwide, Inc. Fibrous materials treated with a polyvinylamine polymer
US20030159786A1 (en) * 2001-03-07 2003-08-28 Runge Troy Michael Method for using water insoluble chemical additives with pulp and products made by said method
US6667424B1 (en) 1998-10-02 2003-12-23 Kimberly-Clark Worldwide, Inc. Absorbent articles with nits and free-flowing particles
US20040062907A1 (en) * 2002-10-01 2004-04-01 Kimberly-Clark Worldwide, Inc. Tissue with semi-synthetic cationic polymer
WO2006060221A2 (en) * 2004-12-02 2006-06-08 Rayonier Trs Holdings Inc. Plasticizing formulation for fluff pulp and plasticized fluff pulp products made therefrom
US20070199165A1 (en) * 2001-12-18 2007-08-30 Tong Sun Polyvinylamine Treatments to Improve Dyeing of Cellulosic Materials
US7429689B2 (en) 1998-10-02 2008-09-30 Kimberly-Clark Worldwide, Inc. Absorbent article with center fill performance
EP2206523A1 (en) 2009-01-13 2010-07-14 Rohm and Haas Company Treated cellulosic fibers and absorbent articles made from them
US20110030908A1 (en) * 2009-08-05 2011-02-10 International Paper Company Composition Containing A Cationic Trivalent Metal And Debonder And Methods Of Making And Using The Same To Enhance Fluff Pulp Quality
US20110034891A1 (en) * 2009-08-05 2011-02-10 International Paper Company Dry Fluff Pulp Sheet Additive
US20110108227A1 (en) * 2009-08-05 2011-05-12 International Paper Company Process For Applying Composition Containing A Cationic Trivalent Metal And Debonder And Fluff Pulp Sheet Made From Same
US20120048493A1 (en) * 2010-07-22 2012-03-01 International Paper Company Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same
US8465624B2 (en) 2010-07-20 2013-06-18 International Paper Company Composition containing a multivalent cationic metal and amine-containing anti-static agent and methods of making and using
US8851020B2 (en) 2011-08-10 2014-10-07 Cat Roberts, LLC Environmentally-friendly, form-fitting canine garment for urine marking, incontinence and heat-induced female menstruation
US8871059B2 (en) * 2012-02-16 2014-10-28 International Paper Company Methods and apparatus for forming fluff pulp sheets
US20170128281A1 (en) * 2014-09-30 2017-05-11 Unicharm Corporation Disposable diaper
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US3654929A (en) * 1966-11-15 1972-04-11 Svenska Cellulosa Ab Body-fluid absorption article
US3617439A (en) * 1969-01-02 1971-11-02 Buckeye Cellulose Corp Process for improving comminution pulp sheets and resulting air-laid absorbent products
US3932209A (en) * 1969-02-24 1976-01-13 Personal Products Company Low hemicellulose, dry crosslinked cellulosic absorbent materials
US3653382A (en) * 1969-12-22 1972-04-04 Procter & Gamble Expandable airfelt pad
US3665923A (en) * 1970-02-05 1972-05-30 Kimberly Clark Co Flushable sanitary napkin
US4158594A (en) * 1970-04-13 1979-06-19 Scott Paper Company Bonded, differentially creped, fibrous webs and method and apparatus for making same
US4208459A (en) * 1970-04-13 1980-06-17 Becker Henry E Bonded, differentially creped, fibrous webs and method and apparatus for making same
US3636952A (en) * 1970-04-24 1972-01-25 Riegel Textile Corp Disposable combination flushable diaper and protective cover
US3930933A (en) * 1970-11-25 1976-01-06 Riegel Textile Corporation Debonded cellulose fiber pulp sheet and method for producing same
US3809089A (en) * 1971-05-26 1974-05-07 B Hedstrom Diaper
DE2256239A1 (de) * 1971-11-19 1973-05-24 Mo Och Domsjoe Ab Quaternaere oberflaechenaktive verbindungen, verfahren zu ihrer herstellung und ihre verwendung bei der herstellung von papier
US3865112A (en) * 1974-03-05 1975-02-11 Kimberly Clark Co Small size sanitary napkins with improved absorption capability
US4057061A (en) * 1974-12-18 1977-11-08 Kabushiki Kaisha Angel Sanitary napkin
US3968798A (en) * 1975-07-03 1976-07-13 Parke, Davis & Company Incontinent pad
US3995640A (en) * 1976-01-05 1976-12-07 Colgate-Palmolive Company Diaper with elastic means
US4327729A (en) * 1977-06-27 1982-05-04 The Procter & Gamble Company Low-density disposable absorbent bandage having low stretch, wet strength center ply to provide improved pad integrity in use
US4448638A (en) * 1980-08-29 1984-05-15 James River-Dixie/Northern, Inc. Paper webs having high bulk and absorbency and process and apparatus for producing the same
WO1982003324A1 (en) * 1981-03-31 1982-10-14 Mitchell James G Absorbent pads,incontinence care products and methods of production
US4568341A (en) * 1982-03-10 1986-02-04 James G. Mitchell Absorbent pads, incontinence care products and methods of production
US4917762A (en) * 1984-10-01 1990-04-17 Dalki R Peter Process for manufacturing a liquid absorbing pad
US5437418A (en) * 1987-01-20 1995-08-01 Weyerhaeuser Company Apparatus for crosslinking individualized cellulose fibers
US5399240A (en) * 1987-01-20 1995-03-21 Weyerhaeuser Company Crosslinked cellulose products and method for their preparation
US6436231B1 (en) 1987-01-20 2002-08-20 Weyerhaeuser Method and apparatus for crosslinking individualized cellulose fibers
US5556976A (en) * 1987-01-20 1996-09-17 Jewell; Richard A. Reactive cyclic N-sulfatoimides and cellulose crosslinked with the imides
US5019068A (en) * 1990-02-05 1991-05-28 Diana Dolls Fashions, Inc. Washable diaper with absorbent liner
US5324391A (en) * 1990-10-31 1994-06-28 Weyerhaeuser Company Method for crosslinking cellulose fibers
US5501768A (en) * 1992-04-17 1996-03-26 Kimberly-Clark Corporation Method of treating papermaking fibers for making tissue
US5830201A (en) * 1994-01-14 1998-11-03 Frederick W. George Flushable diaper and method
US5873979A (en) * 1994-03-18 1999-02-23 The Procter & Gamble Company Preparing individualized polycarboxylic acid crosslinked cellulosic fibers
US5749863A (en) * 1994-03-18 1998-05-12 The Procter & Gamble Company Fluid acquisition and distribution member for absorbent core
US20030205342A1 (en) * 1994-03-25 2003-11-06 Weyerhaeuser Company Multi-ply cellulosic products using high-bulk cellulosic fibers
US5906894A (en) * 1994-03-25 1999-05-25 Weyerhaeuser Company Multi-ply cellulosic products using high-bulk cellulosic fibers
US5998511A (en) * 1994-03-25 1999-12-07 Weyerhaeuser Company Polymeric polycarboxylic acid crosslinked cellulosic fibers
US6184271B1 (en) 1994-03-25 2001-02-06 Weyerhaeuser Company Absorbent composite containing polymaleic acid crosslinked cellulosic fibers
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US5510000A (en) * 1994-09-20 1996-04-23 The Procter & Gamble Company Paper products containing a vegetable oil based chemical softening composition
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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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US6562192B1 (en) 1998-10-02 2003-05-13 Kimberly-Clark Worldwide, Inc. Absorbent articles with absorbent free-flowing particles and methods for producing the same
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US6387495B1 (en) 1999-04-16 2002-05-14 Kimberly-Clark Worldwide, Inc. Superabsorbent-containing composites
US6322665B1 (en) * 1999-10-25 2001-11-27 Kimberly-Clark Corporation Reactive compounds to fibrous webs
US6264791B1 (en) * 1999-10-25 2001-07-24 Kimberly-Clark Worldwide, Inc. Flash curing of fibrous webs treated with polymeric reactive compounds
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US20030159786A1 (en) * 2001-03-07 2003-08-28 Runge Troy Michael Method for using water insoluble chemical additives with pulp and products made by said method
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US20040256066A1 (en) * 2001-12-18 2004-12-23 Jeff Lindsay Fibrous materials treated with a polyvinylamine polymer
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US8851020B2 (en) 2011-08-10 2014-10-07 Cat Roberts, LLC Environmentally-friendly, form-fitting canine garment for urine marking, incontinence and heat-induced female menstruation
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US11096836B2 (en) 2015-03-31 2021-08-24 Kimberly-Clark Wordwide, Inc. Absorbent article with waist containment member and method of manufacturing thereof
US10709618B2 (en) 2015-03-31 2020-07-14 Kimberly-Clark Worldwide, Inc. Absorbent article with compressible waist containment member and method of manufacturing thereof
US11612522B2 (en) 2015-03-31 2023-03-28 Kimberly-Clark Worldwide, Inc. Absorbent article with selectively positioned waist containment member
US10159610B2 (en) 2015-06-29 2018-12-25 Kimberly-Clark Worldwide, Inc. Absorbent article with partially enclosed waist containment member and method of manufacturing thereof
US11839532B2 (en) 2015-06-29 2023-12-12 Kimberly-Clark Worldwide, Inc. Absorbent article with partially enclosed waist containment member and method of manufacturing thereof
US10010458B2 (en) 2015-08-31 2018-07-03 Kimberly-Clark Worldwide, Inc. Elastic composite and absorbent article including the same
US11554055B2 (en) 2015-08-31 2023-01-17 Kimberly-Clark Worldwide, Inc. Absorbent article with absorbent body providing improved access to containment pocket of waist containment member
US10470943B2 (en) * 2015-09-29 2019-11-12 Kimberly-Clark Worldwide, Inc. Absorbent article with selectively positioned waist containment member having an improved waist seal
US20170239104A1 (en) * 2015-09-29 2017-08-24 Kimberly-Clark Woldwide, Inc. Absorbent article with selectively positioned waist containment member having an improved waist seal
US11992394B2 (en) 2015-09-29 2024-05-28 Kimberly-Clark Worldwide, Inc. Absorbent article with selectively positioned waist containment member having an improved waist seal

Also Published As

Publication number Publication date
ES336599A1 (es) 1968-04-01
LU53062A1 (xx) 1967-08-23
DE1561756B1 (de) 1970-10-29
DK127258B (da) 1973-10-08
BE694400A (xx) 1967-08-21
NL6702327A (xx) 1968-05-10
GB1180801A (en) 1970-02-11
AT288601B (de) 1971-03-10
SE318187B (xx) 1969-12-01
DK127258C (da) 1979-07-02
DE1561756C2 (de) 1975-11-27
NL135226C (xx) 1900-01-01
CH453060A (de) 1968-05-31
FR1510789A (fr) 1968-01-19

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