WO2008001328A2 - Structure fibreuse non tissée comprenant une fibre multifilament - Google Patents

Structure fibreuse non tissée comprenant une fibre multifilament Download PDF

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Publication number
WO2008001328A2
WO2008001328A2 PCT/IB2007/052532 IB2007052532W WO2008001328A2 WO 2008001328 A2 WO2008001328 A2 WO 2008001328A2 IB 2007052532 W IB2007052532 W IB 2007052532W WO 2008001328 A2 WO2008001328 A2 WO 2008001328A2
Authority
WO
WIPO (PCT)
Prior art keywords
fibrous structure
fiber
multifilament
fibers
multifilament fiber
Prior art date
Application number
PCT/IB2007/052532
Other languages
English (en)
Other versions
WO2008001328A3 (fr
Inventor
Kenneth Douglas Vinson
Iii Arnold William Trueman
Original Assignee
The Procter & Gamble Company
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 The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to CA 2656186 priority Critical patent/CA2656186A1/fr
Priority to EP20070789836 priority patent/EP2032753A2/fr
Priority to MX2008016292A priority patent/MX2008016292A/es
Publication of WO2008001328A2 publication Critical patent/WO2008001328A2/fr
Publication of WO2008001328A3 publication Critical patent/WO2008001328A3/fr

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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
    • D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D21H15/06—Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments
    • 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
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender
    • 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
    • D21H27/002—Tissue paper; Absorbent paper
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
    • Y10T442/619—Including other strand or fiber material in the same layer not specified as having microdimensions

Definitions

  • the present invention relates to nonwoven fibrous structures, more particularly to nonwoven fibrous structures comprising multifilament fibers, methods for making such fibrous structures and sanitary tissue products employing such fibrous structures.
  • nonwoven fibrous structures Unlike woven fibrous structure, such as textiles, nonwoven fibrous structures have not employed multifilament fibers.
  • Nonwoven fibrous structures have conventionally been made of monofilament fibers. Wood pulp fibers, staple synthetic fibers, continuous polymeric fibers all have been used in their monofilament form to produce fibrous structures. No multifilament fibers have been used in the past in nonwoven fibrous structures. Accordingly, there is a need for nonwoven fibrous structures comprising multifilament fibers, methods for making such fibrous structures and sanitary tissue products comprising such fibrous structures.
  • the present invention fulfills the needs described above by providing a fibrous structure comprising a multifilament fiber, a method for making such a fibrous structure and a sanitary tissue product comprising such a fibrous structure.
  • a nonwoven fibrous structure comprising a multifilament fiber is provided.
  • a nonwoven fibrous structure comprising a fiber and/or a multifilament fiber wherein the fiber and/or the multifilament fiber is associated with an ingredient (other than the fiber or multifilament itself) and/or characteristic present in the fibrous structure, is provided.
  • a method for making a nonwoven fibrous structure comprising the steps of incorporating a fiber and/or multifilament fiber into a fibrous structure wherein the fiber and/or multifilament fiber is associated with an ingredient and/or characteristic of the fibrous structure such that a consumer is able to determine by looking at the fiber and/or the multifilament fiber that the fibrous structure and/or sanitary tissue product comprising such fibrous structure contains a certain ingredient and/or exhibits a certain characteristic.
  • a method for making a nonwoven fibrous structure comprising a multifilament fiber comprising a multifilament fiber, wherein the method comprises forming a nonwoven fibrous structure from a fibrous slurry and/or fibrous composition comprising a multifilament fiber, is provided.
  • a fibrous slurry as used herein means a mixture of multifilaments and/or monofilaments. Such mixtures of multifilaments and/or monofilaments may be used in wet laid process or an air laid process
  • a single- or multi-ply sanitary tissue product comprising a nonwoven fibrous structure according to the present invention.
  • the present invention provides nonwoven fibrous structures comprising a multifilament fiber, methods for making such a fibrous structure, and sanitary tissue products comprising such a fibrous structure.
  • Fig. 1 is a schematic representation of a multifilament fiber in accordance with the present invention
  • Fig. 2 is a schematic representation of a fibrous structure in accordance with the present invention.
  • Multifilament fiber as used herein means a fiber that comprises two or more monofilaments that are substantially unbonded, but physically associated with one another to form a unitary structure.
  • suitable multifilament fibers may be derived from yarns (continuous strands of twisted monofilaments) or from tow (an untwisted bundle of continuous filaments) most preferably by cutting such yarns or tow into papermaking length. The dispersion energy from the papermaking operation is insufficient to separate the multifilament fibers.
  • Groups of fibers with substantial bonding among the filaments including but not limited to such as nits, shives, and flakes, are not multifilament fibers but rather are termed herein "bonded-multifilament fibers”.
  • the multifilament fiber may exhibit a length of at least about 1 mm.
  • the multifilament fiber may exhibit any shape, for example it may be substantially cylindrical in shape.
  • the multifilament fiber may exhibit an average effective diameter that is at least
  • the multifilament fiber exhibits a length of less than about 12.70 cm (5 inches) and/or less than about 10.16 cm (4 inches) and/or less than about 7.62 cm (3 inches) and/or less than about 5.08 cm (2 inches) and/or less than about 2.54 cm (1 inch).
  • the multifilament fiber of the present invention exhibits an average effective diameter of at least about 30 microns and/or at least about 100 microns and/or at least about 500 microns.
  • the multifilament fibers of the present invention may comprise natural fibers, non-naturally occurring fibers, such as spun cellulose fibers and/or spun starch fibers, and/or other synthetic fibers, such as polymeric fibers including but not limited to nylon fibers, polyester fibers, polyolefin fibers and combinations thereof.
  • At least one type of multifilament fiber of the present invention is different in color than the other types of multifilament fibers and the monofilament fibers comprising the fibrous structure of the present invention.
  • the color difference is sufficient to render the multifilament fiber visually discernible.
  • a multifilament fiber 10 which is in the form of a cut yarn, comprises two or more monofilaments 12.
  • the multifilament fiber 10 is in the form of sheaves characterized by frayed ends 14, which are present on at least one end 16 of the multifilament fiber 10.
  • a multifilament fiber may be a bonded multifilament fiber and/or a non-bonded multifilament fiber.
  • Bonded multifilament fiber is an assembly of monofilaments that are physically attached to one another directly or indirectly (such as via a bonding agent), to form a bonded multifilament fiber.
  • bonded multifilament fibers include flakes, nit and shives.
  • Non-bonded multifilament fiber is an assembly of monofilaments that are in contact with one another at at least one point along their lengths but are not physically attached to one another.
  • Nonlimiting examples of non-bonded multifilament fibers include yarn (monofilaments twisted about one another along their lengths) and tow (monofilaments not twisted about one another along their lengths).
  • the multifilament fibers of the present invention are used in the fibrous structures of the present invention in the form of cut yarn and/or cut tow that exhibit suitable lengths for inclusion in the fibrous structures of the present invention.
  • "Monofilament Fiber” as used herein means an elongate particulate having an apparent length greatly exceeding its apparent width, i.e. a length to diameter ratio of at least about 10. More specifically, as used herein, "fiber” refers to papermaking fibers.
  • the present invention contemplates the use of a variety of papermaking fibers, such as, for example, natural fibers or synthetic fibers, or any other suitable fibers, and any combination thereof.
  • Papermaking fibers useful in the present invention include cellulosic fibers commonly known as wood pulp fibers.
  • Applicable wood pulps include chemical pulps, such as Kraft, sulfite, and sulfate pulps, as well as mechanical pulps including, for example, groundwood, thermomechanical pulp and chemically modified thermomechanical pulp. Chemical pulps, however, may be preferred since they impart a superior tactile sense of softness to tissue sheets made therefrom. Pulps derived from both deciduous trees (hereinafter, also referred to as "hardwood”) and coniferous trees (hereinafter, also referred to as "softwood”) may be utilized. The hardwood and softwood fibers can be blended, or alternatively, can be deposited in layers to provide a stratified web.
  • hardwood deciduous trees
  • softwood coniferous trees
  • 3,994,771 are incorporated herein by reference for the purpose of disclosing layering of hardwood and softwood fibers.
  • fibers derived from recycled paper which may contain any or all of the above categories as well as other non-fibrous materials such as fillers and adhesives used to facilitate the original papermaking.
  • cellulosic fibers such as cotton linters, rayon, and bagasse can be used in this invention.
  • Synthetic fibers and/or non- naturally occurring fibers such as polymeric fibers, can also be used.
  • Elastomeric polymers, polypropylene, polyethylene, polyester, polyolefin, and nylon, can be used.
  • the polymeric fibers can be produced by spunbond processes, meltblown processes, and other suitable methods known in the art.
  • An embryonic fibrous web can be typically prepared from an aqueous dispersion of papermaking fibers, though dispersions in liquids other than water can be used.
  • the fibers are dispersed in the carrier liquid to have a consistency of from about 0.1 to about 0.3 percent. It is believed that the present invention can also be applicable to moist forming operations where the fibers are dispersed in a carrier liquid to have a consistency of less than about 50% and/or less than about 10%.
  • "Fibrous structure” as used herein means a structure that comprises one or more multifilament fibers.
  • a fibrous structure according to the present invention means an orderly arrangement of multifilament fibers alone or in combination with monofilament fibers within a structure in order to perform a function.
  • Nonlimiting examples of fibrous structures of the present invention include composite materials (including reinforced plastics and reinforced cement), paper, fabrics (including woven, knitted, and non- woven), and absorbent pads (for example for diapers or feminine hygiene products).
  • a bag of loose fibers is not a fibrous structure in accordance with the present invention.
  • Nonwoven or “Nonwoven fibrous structure” as used herein means a web that is produced by a process other than knitting or some other woven process.
  • a nonwoven fibrous structure is a web that comprises a plurality of fiber and/or monofilaments and/or multi-filaments that is produced by a process other than knitting or some other woven process.
  • Nonlimiting examples of processes for making nonwoven fibrous structures include known wet-laid papermaking processes and air-laid papermaking processes. Such processes typically include steps of preparing a fiber composition in the form of a suspension in a medium, either wet, more specifically aqueous medium, or dry, more specifically gaseous, i.e. with air as medium.
  • the aqueous medium used for wet-laid processes is oftentimes referred to as a fiber slurry.
  • the fibrous suspension is then used to deposit a plurality of fibers onto a forming wire or belt such that an embryonic fibrous structure is formed, after which drying and/or bonding the fibers together results in a fibrous structure. Further processing the fibrous structure may be carried out such that a finished fibrous structure is formed.
  • the finished fibrous structure is the fibrous structure that is wound on the reel at the end of papermaking, and may subsequently be converted into a finished product, e.g. a sanitary tissue product.
  • the fibrous structures of the present invention may be homogeneous or may be layered. If layered, the fibrous structures may comprise at least two and/or at least three and/or at least four and/or at least five layers.
  • “Sanitary tissue product” as used herein means a soft, low density (i.e. ⁇ about 0.15 g/cm3) web useful as a wiping implement for post-urinary and post-bowel movement cleaning (toilet tissue), for otorhinolaryngological discharges (facial tissue), and multifunctional absorbent and cleaning uses (absorbent towels).
  • the sanitary tissue product may be convolutedly wound upon itself about a core or without a core to form a roll of sanitary tissue product.
  • the sanitary tissue product of the present invention comprises a fibrous structure according to the present invention.
  • Basis Weight as used herein is the weight per unit area of a sample reported in lbs/3000 ft 2 or g/m 2 .
  • Basis weight is measured by preparing one or more samples of a certain area (m 2 ) and weighing the sample(s) of a fibrous structure according to the present invention and/or a paper product comprising such fibrous structure on a top loading balance with a minimum resolution of 0.01 g. The balance is protected from air drafts and other disturbances using a draft shield. Weights are recorded when the readings on the balance become constant.
  • the average weight (g) is calculated and the average area of the samples (m ).
  • the basis weight (g/m ) is calculated by dividing the average weight (g) by the average area of the samples (m 2 ).
  • Machine Direction or "MD" as used herein means the direction parallel to the flow of the fibrous structure through the papermaking machine and/or product manufacturing equipment.
  • Cross Machine Direction or “CD” as used herein means the direction perpendicular to the machine direction in the same plane of the fibrous structure and/or paper product comprising the fibrous structure.
  • Ply or Plies as used herein means an individual fibrous structure optionally to be disposed in a substantially contiguous, face-to-face relationship with other plies, forming a multiple ply fibrous structure. It is also contemplated that a single fibrous structure can effectively form two "plies” or multiple "plies", for example, by being folded on itself.
  • the fibrous structures of the present invention comprise one or more fibers and/or one or more multifilament fibers.
  • the fibrous structure may comprise at least about 0.1 % by weight, on a dry fibrous structure basis of a multifilament fiber.
  • the fibrous structure may comprise at least about 0.1% and/or at least about 0.2% and/or at least about 0.4 % and/or at least about 1% to about 25 % and/or to about 10 % and/or to about 5 % and/or to about 2.5 % by weight, on a dry fibrous structure basis of a multifilament fiber.
  • the fibrous structures of the present invention may comprise one or more monofilament fibers.
  • the fibrous structures of the present invention may comprise any suitable ingredients known in the art.
  • suitable ingredients include permanent and/or temporary wet strength resins, dry strength resins, softening agents, wetting agents, lint resisting agents, absorbency-enhancing agents, immobilizing agents, especially in combination with emollient lotion compositions, antiviral agents including organic acids, antibacterial agents, polyol polyesters, antimigration agents, polyhydroxy plasticizers, opacifying agents and mixtures thereof.
  • Such ingredients when present in the fibrous structure of the present invention, may be present at any level based on the dry weight of the fibrous structure.
  • such ingredients when present, may be present at a level of from about 0.001 to about 50% and/or from about 0.001 to about 20% and/or from about 0.01 to about 5% and/or from about 0.03 to about 3% and/or from about 0.1 to about 1.0% by weight, on a dry fibrous structure basis.
  • the fibrous structures of the present invention may be of any type, including but not limited to, conventionally felt-pressed fibrous structures; pattern densified fibrous structures; and high-bulk, uncompacted fibrous structures.
  • the fibrous structures may be creped or uncreped and/or through-dried or conventionally dried.
  • the sanitary tissue products made therefrom may be of a single-ply or multi-ply construction.
  • the fibrous structures of the present invention and/or sanitary tissue products comprising such fibrous structures may have a basis weight of between about 10 g/m 2 to about 120 g/m 2 and/or from about 14 g/m 2 to about 80 g/m 2 and/or from about 20 g/m 2 to about 60 g/m 2 .
  • the fibrous structures of the present invention and/or sanitary tissue products comprising such fibrous structures may have a total dry tensile strength of greater than about 59 g/cm (150 g/in) and/or from about 78 g/cm (200 g/in) to about 394 g/cm (1000 g/in) and/or from about 98 g/cm (250 g/in) to about 335 g/cm (850 g/in).
  • a fibrous structure 20 comprises a multifilament fiber 10 comprised of two or more monofilaments 12.
  • the fibrous structure 20 also comprises one or more monofilaments 12 which are not associated with other monofilaments 12 to form a multifilament 10.
  • a multifilament fiber 10 can be used within a fibrous structure 20 to convey to a consumer of the fibrous structure 20 and/or sanitary tissue product comprising such fibrous structure 20 that the fibrous structure 20 exhibits a certain property or characteristic.
  • the multifilament fiber 10 may function as a visual cue to inform a consumer that the fibrous structure contains or does not contain a particular ingredient (other than the fact that a multifilament fiber is present) and/or that the fibrous structure exhibits a certain property/characteristic such as softness.
  • a fibrous structure may comprise a fiber that provides a visual cue that is associated with the presence of a certain ingredient (other than the fact that a certain fiber is present) and/or characteristic (i.e., certain property) is provided.
  • the fiber may be noticeable to a consumer of the fibrous structure by being colored, of a different size, of a different shape, of a different length, different texture from other fibers within the fibrous structure.
  • the fibrous structure of the present invention is a nonwoven fibrous structure.
  • a fibrous structure comprising a multifilament fiber may be made by any suitable method known in the art.
  • a method for making a fibrous structure comprising a multifilament fiber comprises the step of forming a fibrous slurry and/or fibrous composition comprising a multifilament fiber and depositing the fibrous slurry and/or fibrous composition onto a forming belt such that a fibrous structure is formed.
  • Nonlimiting Examples Example 1 Example 1
  • This Example illustrates a process for making a multi-ply sanitary tissue product (i.e., a bathroom tissue) according to the present invention using a through-air dried process.
  • An aqueous slurry of Northern Softwood Kraft (NSK) of about 3% consistency is made up using a conventional pulper and is passed through a stock pipe toward the headbox of the Fourdrinier.
  • a dispersion of Parez 750C (available from Kemira Corporation of Kennesaw, GA) wet strength resin about 1% in concentration is mixed with this stock in an amount sufficient to deliver a total of about 3 Ib of resin per ton of finished paper product. Distribution of the Parez 750C is aided by an in-line mixer. This wet strength resin treated stock is diluted at the inlet of a first fan-pump with recycled white water to a consistency of about 0.2%.
  • An aqueous slurry of acacia fibers (from Riau Andalan - Indonesia) of about 3% by weight is made up using a conventional repulper. After the acacia fibers are added to the pulper, green cotton thread (spun cotton of 2 ply of 120 X 120 denier) cut to a length of VA" is added to the pulper in an amount to equal to about 1% of the final sheet weight. The pulping intensity is controlled to fibrillate the multifilament threads at the ends, but leaving the majority of the filament shaft intact. The frayed ends will add to the attractiveness of the finished product as well as improve the anchoring of the multifilaments in the structure. The acacia & cotton thread slurry passes to the second fan pump where it is diluted with white water to a consistency of about 0.2%.
  • the slurries of NSK and acacia/thread are directed into a multi-channeled headbox suitably equipped with layering leaves to maintain the streams as separate layers until discharged onto a traveling Fourdrinier wire.
  • a three-chambered headbox is used.
  • the acacia/thread slurry containing 70% of the dry weight of the ultimate paper is directed to the chambers leading to the two outer layers while the NSK slurry comprising 30% of the dry weight of the ultimate paper is directed to the chamber leading to the center layer.
  • the NSK and acacia/thread slurries are combined at the discharge of the headbox into a composite slurry.
  • the composite slurry is discharged onto the traveling Fourdrinier wire and is dewatered assisted by a deflector and vacuum boxes.
  • the embryonic wet web is transferred from the Fourdrinier wire, at a fiber consistency of about 17% by weight at the point of transfer, to a patterned drying fabric.
  • the drying fabric is designed to yield a pattern-densified tissue with discontinuous low-density deflected areas arranged within a continuous network of high density (knuckle) areas.
  • This drying fabric is formed by casting an impervious resin surface onto a fiber mesh supporting fabric.
  • the supporting fabric is a 48 x 52 filament, dual layer mesh.
  • the thickness of the resin cast is about 12 mil above the supporting fabric.
  • the knuckle area is about 40% and the open cells remain at a frequency of about 400 per square inch.
  • the open cells are generally elliptical in shape with the longer direction disposed in the machine direction and having an aspect ratio of 0.866.
  • the semi-dry web is then adhered to the surface of a Yankee dryer with a sprayed creping adhesive comprising a 0.250% aqueous solution of polyvinyl alcohol.
  • the creping adhesive is delivered to the Yankee surface at a rate of 0.1% adhesive solids based on the dry weight of the web.
  • the fiber consistency is increased to about 98% before the is dry creped from the
  • the doctor blade has a bevel angle of about 20° and is positioned with respect to the Yankee dryer to provide an impact angle of about 76°.
  • the Yankee dryer is operated at a temperature of about 35O 0 F (177 0 C) and a speed of about 800 fpm (feet per minute) (about 244 meters per minute).
  • the paper is wound in a roll using a surface driven reel drum having a surface speed of about 680 fpm (about 207 meters per minute), thus resulting in a crepe of about 15%.
  • the web is calendered across all its width with a steel to rubber calendar roll to achieve the caliper desired in the product.
  • Resulting fibrous structure has a basis weight of about 20 g/m2; a 1-ply total dry tensile between 250 and about 300 g/in, a 1-ply initial total wet tensile between about 30 and about 35 g/in and a 1-ply caliper of about 0.018 inches.
  • Resulting fibrous structure is then plied together with a like sheet to form a two-ply, creped, pattern densified fibrous structure so that the Yankee-contacting surface, which is the flatter surface, of each ply faces inward while the non- Yankee contacting surface face outward.
  • the plies are minimally tacked together using about Vi" wide stripe of hot melt adhesive to prevent the plies from easily separating.
  • the resulting two-ply fibrous structure has a) a total basis weight of about 40 g/m2 and a caliper of about 0.028 inches.
  • the cotton threads provide an attractive and prominent visual signal to consumers that a certain ingredient (not merely that a cotton thread is present) and/or a certain property is present in the fibrous structure.
  • Example 1 is repeated except that the chopped cotton thread is replaced with denim pulp.
  • the denim pulp is made from recovered scraps from the manufacture of clothing articles such as jeans using denim fabric. It is processed by an entirely mechanical process using a refiner until the fibers are chopped to satisfactory papermaking lengths. Some of the denim filaments retain their multifilament character.
  • the denim pulp is added to the pulper with the acacia fibers. Otherwise the practice of
  • Example 1 is repeated.
  • the denim pulp multifilaments provide an attractive and prominent visual signal to consumers that a certain ingredient (not merely that a denim pulp multifilament is present) and/or a certain property is present in the fibrous structure.
  • Example 1 is repeated except that the chopped cotton thread is replaced with green dyed polyester tow.
  • the tow is 200 ends of 2 dpf polyester chopped to. Some of the tow bundles their multifilament character.
  • the denim pulp is added to the pulper with the acacia fibers and the time and intensity of the pulping is moderated so that most of the tow bundles retain a multifilament character.
  • the ends of the chopped tow segments tend to feather outward creating a sheave appearance. This adds to their appearance in the finished product as well as helping to anchor the tow in the fibrous structure.
  • Example 1 Otherwise the practice of Example 1 is repeated.
  • the polyester tow multifilaments provide an attractive and prominent visual signal to consumers that a certain ingredient

Abstract

La présente invention concerne des structures fibreuses comprenant une fibre et/ou une fibre multifilament, des produits tissu sanitaire utilisant ces structures fibreuses et des procédés de fabrication de ces structures fibreuses.
PCT/IB2007/052532 2006-06-29 2007-06-29 Structure fibreuse non tissée comprenant une fibre multifilament WO2008001328A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA 2656186 CA2656186A1 (fr) 2006-06-29 2007-06-29 Structure fibreuse non tissee comprenant une fibre multifilament
EP20070789836 EP2032753A2 (fr) 2006-06-29 2007-06-29 Structure fibreuse non tissée comprenant une fibre multifilament
MX2008016292A MX2008016292A (es) 2006-06-29 2007-06-29 Estructura fibrosa no tejida que comprende una fibra de multifilamentos.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81732106P 2006-06-29 2006-06-29
US60/817,321 2006-06-29

Publications (2)

Publication Number Publication Date
WO2008001328A2 true WO2008001328A2 (fr) 2008-01-03
WO2008001328A3 WO2008001328A3 (fr) 2008-03-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/052532 WO2008001328A2 (fr) 2006-06-29 2007-06-29 Structure fibreuse non tissée comprenant une fibre multifilament

Country Status (5)

Country Link
US (1) US20080003913A1 (fr)
EP (1) EP2032753A2 (fr)
CA (1) CA2656186A1 (fr)
MX (1) MX2008016292A (fr)
WO (1) WO2008001328A2 (fr)

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USD834838S1 (en) 2017-04-07 2018-12-04 Kimberly-Clark Worldwide, Inc. Non-woven material
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US20190254669A1 (en) * 2018-02-21 2019-08-22 Ethicon Llc Knitted tissue scaffolds
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US11678883B2 (en) 2020-11-25 2023-06-20 Cilag Gmbh International Compressible knitted adjuncts with varying interconnections
US11648007B2 (en) 2020-11-25 2023-05-16 Cilag Gmbh International Compressible knitted adjuncts with varying fiber features
US11690617B2 (en) 2020-11-25 2023-07-04 Cilag Gmbh International Compressible knitted adjuncts with finished edges
US11446027B2 (en) 2020-11-25 2022-09-20 Cilag Gmbh International Compressible knitted adjuncts with surface features

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EP2032753A2 (fr) 2009-03-11
MX2008016292A (es) 2009-01-15
CA2656186A1 (fr) 2008-01-03
WO2008001328A3 (fr) 2008-03-20
US20080003913A1 (en) 2008-01-03

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