EP0396920A1 - Fabrication d'une nappe de fibres composite ayant des propriétés d'absorption - Google Patents

Fabrication d'une nappe de fibres composite ayant des propriétés d'absorption Download PDF

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Publication number
EP0396920A1
EP0396920A1 EP90106820A EP90106820A EP0396920A1 EP 0396920 A1 EP0396920 A1 EP 0396920A1 EP 90106820 A EP90106820 A EP 90106820A EP 90106820 A EP90106820 A EP 90106820A EP 0396920 A1 EP0396920 A1 EP 0396920A1
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EP
European Patent Office
Prior art keywords
brush
liquid carrier
fibrous web
bristles
flicking
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.)
Withdrawn
Application number
EP90106820A
Other languages
German (de)
English (en)
Inventor
Michael J. Iskra
Thomas W. Piantek
Larry H. White
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weyerhaeuser Co
Original Assignee
Weyerhaeuser Co
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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Publication of EP0396920A1 publication Critical patent/EP0396920A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • D04H1/58—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/655—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents

Definitions

  • This invention pertains to an improved method of dispersing droplets of a polymerizable, cross-linkable material, in a liquid carrier, within a fibrous web.
  • the improved method which effects dispersion of the droplets through the use of a brush roller, may be advantageously employed as a part of a method of manufacturing a composite web.
  • the material as polymerized and cross-linked, has absorbent or superabsorbent properties, so that the material is capable of absorbing liquid human excreta, such as urine, menses, or wound excreta
  • the composite web may be advantageously employed in or as an absorbent article, such as a disposable diaper, tampon, sanitary napkin, wound dressing, or similar product requiring such properties.
  • absorbent articles can be advantageously made with absorbing layers and wicking layers.
  • the absorbing layers can be advantageously made from polyester fibers, within which particles of a superabsorbent material are dispersed.
  • the wicking layers can be advantageously made from cellulosic fibers, such as wood pulp, and can include or take the form of a densified, paper-like layer, such as is disclosed in Burgeni U.S. Patent No. 3,017,304, on one side or each side. See, also, Mesek et al. U.S. Patent No. 3,612,055 and Repke U.S. Patent No. 3,938,522.
  • the superabsorbent material can be advantageously formed from a polymerizable, cross-linkable material, e.g., a water-soluble monomer exemplified by sodium, potassium, or ammonium acrylate, which is coated, in a liquid carrier, e.g., in an aqueous solution, onto a fibrous web, and which is polymerized and cross-linked in situ, so as to form a hydrophyllic polymer having superabsorbent properties.
  • a polymerizable, cross-linkable material e.g., a water-soluble monomer exemplified by sodium, potassium, or ammonium acrylate
  • a liquid carrier e.g., in an aqueous solution
  • Conventional coating techniques involve flooding the fibrous web with the material, in the liquid carrier, while the fibrous web is supported on a screen, so as to saturate the fibrous web, and exposing the saturated web to a partial vacuum, which removes excess amounts of the material, in the liquid carrier.
  • a partial vacuum which removes excess amounts of the material, in the liquid carrier.
  • the material tends to retain whatever morphology, i.e., size and shape, the material has as retained, in the liquid carrier, within the fibrous web before the material is polymerized and cross-linked.
  • the material tends to occur as fragments of continuous film after the material has been polymerized and cross-linked.
  • Smaller, nearly spherical particles have preferred morphologies, since such particles have higher surface-to-volume ratios, as compared to fragments of continuous film, and since such particles may have lower internal stresses when swollen with absorbed liquids, as compared to such fragments.
  • Small diameter particles, with optimal spatial distribution, give minimal interference with adjacent, swollen particles.
  • the spheres of swollen gel also create a capillary infrastructure which is effective in immobilizing additional free liquid.
  • Smaller, nearly spherical particles are also preferred because such particles are less prone to cause gel blocking when swollen with a liquid being absorbed, e.g., urine being absorbed in a diaper.
  • Gel blocking occurs if particles of a superabsorbent material tending to form a gel when swelling with absorbed liquid are too densely distributed within an absorbent article, so that the swelling particles tend to form a gel layer, which blocks additional liquid from penetrating.
  • This invention provides an improved method of dispersing droplets of a polymerizable, cross-linkable material, in a liquid carrier, within a fibrous web, in which the material is to be polymerized and cross-linked in situ.
  • the method contemplates use of a brush and roller combination, which is operated so that its brush bristles flick such material, in the liquid carrier, on and penetratingly into the fibrous web.
  • the improved method may be advantageously employed as a part of a method of manufacturing a composite web, which comprises the fibrous web and dispersed inclusions of the material, as polymerized and cross-linked.
  • the composite web may be further processed, e.g., compressed and cut down to a useful size, and employed as or in an absorbent article useful in a disposable diaper, tampon, sanitary napkin, wound dressing, or similar or dissimilar product requiring such properties.
  • the improved method tends to produce from the material, as polymerized and cross-linked, smaller inclusions, which tend to be more nearly spherical, as compared with fragments of continuous film produced by conventional coating techniques discussed above. If the polymerized, cross-linked material has absorbent or superabsorbent properties, such smaller inclusions have more preferable morphologies for absorbency or superabsorbency, as compared to such fragments. Moreover, the improved method tends to provide more uniform coverage and eliminates plugging and clogging, as compared to spraying techniques employing nozzles.
  • droplets of the material, in the liquid carrier are dispersed within the fibrous web by moving the fibrous web through a zone wherein droplets of the material, in the liquid carrier, are flicked onto the fibrous web as the fibrous web is moved through the zone, which may be conveniently called a droplet-flicking zone.
  • Droplets flicked onto the fibrous web tend to become dispersed within the fibrous web, as dispersed inclusions, which tend to be nearly spherical, as retained by the fibrous web. Such inclusions tend to be more nearly spherical, as compared to fragments of continuous film resulting from conventional coating techniques.
  • droplets of the material, in the liquid carrier are flicked onto the fibrous web as the fibrous web is moved through the droplet-flicking zone, by means of a rotating element picking up the material, in the liquid carrier, and flicking droplets of the material, in the liquid carrier, onto the fibrous web as the element rotates.
  • the rotating element is a brush with bristles picking up the material, in the liquid carrier, and flicking droplets of the material, in the liquid carrier, as the brush rotates.
  • the bristles pick up the material, in the liquid carrier, from a rotating roller wiped by the bristles as the brush and the roller rotate.
  • the brush and the roller may rotate, in opposite rotational senses (i.e., counter-rotate), about parallel axes.
  • the bristles Being resilient, the bristles are deflected, or deformed, from their normal orientation as they wipe the associated roller and receive the polymerizable, cross-linkable material, in the liquid carrier. As the bristles leave the roller, they return to their normal orientation, whereby their resiliency and centrifugal forces combine to cause the liquid on the bristles to be energetically flicked, i.e., flung or projected, onto the moving fibrous web.
  • droplets of the material, in the liquid carrier may be so flicked onto opposite sides of the fibrous web as the fibrous web is moved through the droplet-flicking zones, by rotating elements picking up the material, in the liquid carrier, and flicking droplets of the material, in the liquid carrier, onto opposite sides of the fibrous web as the elements rotate. At least one of the rotating elements may be then adapted to flick droplets onto a respective side of the fibrous web as the fibrous web is moved through the droplet-receiving zone.
  • Each of the rotating elements may be a brush, which may have bristles wiping a rotating roller, as described above.
  • the nominal diameter of the droplets i.e., the largest cross-sectional dimension of such a droplet, regardless of its shape
  • flicked by its bristles can be readily controlled within useful ranges, e.g., nominal diameters ranging from less than 0.1 mm to greater than 1 mm.
  • the resulting inclusions which tend to be nearly spherical, tend to have nearly uniform diameters. It is possible, therefore, to disperse droplets tending to have smaller nominal diameters and droplets tending to have larger nominal diameters respectively onto the fibrous web, either onto a given side or onto opposite sides, in two successive passes of the fibrous web through the droplet-flicking zone. It is possible, moreover, to disperse droplets tending to have smaller nominal diameters and droplets tending to have larger nominal diameters respectively onto opposite sides of the fibrous web in a single pass of the fibrous web through the droplet-flicking zone.
  • the manufacturing method further involves polymerizing and cross-linking the material in situ, so as to form the composite web.
  • the composite web may be advantageously employed with superior results, possibly in a compressed and cut-down form, in or as an absorbent article useful in a tampon, sanitary napkin, wound dressing, or similar or dissimilar product requiring absorbent properties.
  • the composite web can be also provided with a wicking layer or wicking layers, as discussed above, one or more densified, paper-like layers, as discussed above, or both.
  • each reference to a polymerizable, cross-linkable material, in a liquid carrier is intended to refer to any suitable monomer, oligomer, or polymer of low molecular weight, as exemplified by but not limited to a sodium, potassium, or ammonium salt of acrylic or methacrylic acid, together with a sufficient quantity of any catalyst or initiator needed to catalyze or initiate polymerizing and cross-linking of the monomer, oligomer, or polymer of low molecular weight, in a solution or suspension in a liquid carrier, as exemplified by not limited to water.
  • each reference to a polymer is intended to refer to a heteropolymer or a polymer of a usual structure.
  • each reference to a material having absorbent properties is intended to refer to a material capable of absorbing liquid human excreta, such as urine, menses, or wound excreta.
  • each reference to a material having superabsorbent properties is intended to refer to a material capable of absorbing many times its own weight of such human excreta.
  • a fibrous web W is being moved upwardly through a lower zone Z 1, wherein droplets D of a polymerizable, cross-linkable material M are being flicked onto opposite sides of the fibrous web W , and through an upper zone Z 2, wherein the material is being polymerized and cross-linked in situ.
  • the lower zone Z 1 may be conveniently called a droplet-flicking zone.
  • the upper zone Z 2 may be conveniently called a polymerizing and cross-linking zone. Any suitable means (not shown) may be used to move the fibrous web W upwardly through the successive zones.
  • the fibrous web W may be moved downwardly, or in any other direction, so long as the fibrous web W is moved through such droplet-flicking zone before the fibrous web W is moved through such a polymerizing and cross-linking zone.
  • the fibrous web W may comprise (a) 80% by weight of a fiber blend being a blend of (1) 75% by weight of poly(ethylene terephthalate) fiber (5.5 denier x 1.5 inches/6,11 ⁇ 10 ⁇ 7 Kg/m x 38.1 mm) and (2) 25% of a first composite fiber (4.1 denier x 1.5 inches/4.55 ⁇ 10 ⁇ 7 Kg/m x 38.1 mm) having a solid core of poly(ethylene terephthalate) and a sheath of a poly(ethylene terephthalate) copolymer, as available commercially under the trade designation DuPont D-280W from E.I.
  • a second composite fiber (3.0 denier x 2 inches/3.33 ⁇ 10 ⁇ 7 Kg/m x 50.8 mm) having a solid core of poly(ethylene terephthalate) and a sheath of a copolymer of poly(ethylene terephthalate) and polyethylene, as available commercially under the trade designation Enka Bico from BASF Corporation, Parsippany, New Jersey, as carded into a nonwoven web having a basis weight of about (1.25 oz/yd2/42.382 g/m2) and thermally bonded by subjecting the nonwoven web to air heated to about (350° F/176,67°C) as the nonwoven web is pulled through a forced air oven while the nonwoven web is supported on a screen (not shown) in a known manner.
  • This invention is not limited to the type of fibrous web given as an example.
  • an aqueous solution of 60% concentration of 65% neutralized (on a weight basis) potassium acrylate, as neutralized with potassium hydroxide may constitute the polymerizable, cross-linkable material, in the liquid carrier, i.e., in water.
  • a majority, e.g., approximately 80%, of the liquid carrier, i.e., water is evolved.
  • This invention is not limited to the polymerizable, cross-linkable material given as an example, or to the liquid carrier given as an example.
  • droplets D of the material M in the liquid carrier are flicked onto a given side of the fibrous web W , i.e., its left side as shown, by a rotating brush 2, which is at least as wide as the fibrous web W , and which has bristles 4 picking up the material M , in the liquid carrier, and flicking droplets D of the material M in the liquid carrier onto the given or left side of the fibrous web W as the brush 2 rotates.
  • the brush 2 is rotated in a counterclockwise sense, as shown, by any suitable means (not shown) so as to rotate about a horizontal axis parallel to the fibrous web W moving through the droplet-flicking zone Z 1.
  • droplets D of the material M , in the liquid carrier are flicked onto the other side of the fibrous web W , i.e., its right side as shown, by a rotating brush 6, which is at least as wide as the fibrous web W , and which has bristles 8 picking up the material M , in the liquid carrier, and flicking droplets D of the material M , in the liquid carrier, onto the other or right side of the fibrous web W as the brush 6 rotates.
  • the brush 6 is rotated in a clockwise sense, as shown, by any suitable means (not shown) so as to rotate about a horizontal axis parallel to the fibrous web W moving through the droplet-flicking zone Z 1.
  • the horizontal axes of the brushes 2, 6, respectively are at similar elevations, as shown, but may be at different elevations.
  • the bristles 4 of the brush 2 pick up the material M , in the liquid carrier, by wiping a rotating roller 10 as the brush 2 and the roller 10 rotate.
  • the roller 10 picks up the material M , in the liquid carrier, from a pan 12 containing a supply of the material M , in the liquid carrier, as the roller 10 rotates.
  • the roller 10 is rotated in a clockwise sense, as shown, by any suitable means (not shown) so as to rotate about a horizontal axis parallel to and disposed vertically beneath the horizontal axis of the brush 2.
  • the bristles 8 of the brush 6 pick up the material M , in the liquid carrier, by wiping a rotating roller 14 as the brush 6 and the roller 14 rotate.
  • the roller 14 picks up the material M , in the liquid carrier, from a pan 16 containing a supply of the material M , in the liquid carrier, as the roller 14 rotates.
  • the roller 14 is rotated in a counterclockwise sense, as shown, by any suitable means (not shown) so as to rotate about a horizontal axis parallel to and disposed vertically beneath the horizontal axis of the brush 6.
  • the horizontal axes of the rollers 10, 14, respectively are at similar elevations.
  • the aforesaid means rotating the brush 2 may be also used to rotate the roller 10 via wiping action of the bristles 4 of the brush 2 against the roller 10.
  • the aforesaid means rotating the brush 6 may be also used to rotate the roller 14 via wiping action of the bristles 8 of the brush 6 against the roller 14.
  • Any suitable, level-controlled or other means may be also provided for replenishing the supplies of the material M , in the liquid carrier, in the pans 12, 16, respectively.
  • Droplets D flicked by the bristles of the brushes 2, 6, onto opposite sides of the fibrous web W tend to be nearly spherical, to penetrate the fibrous web W from opposite sides, and to be well dispersed within and among the fibers of the fibrous web W , as dispersed inclusions, which tend to be nearly spherical. Such inclusions tend to be more nearly spherical when compared to fragments of continuous film, as produced by conventional coating techniques noted above.
  • the rotational speeds of the brushes 2, 6, are at least 200 rpm.
  • the rotational speeds of the rollers 10, 14, are from about 50 rpm to about 200 rpm depending on throughput, preferably about 125 rpm.
  • Each brush can have a bristle diameter (thickness) from about (0.004 inch/0.1016 mm) to about (0.025 inch/0.635 mm), a bristle diameter (thickness) of about (0.012 inch/0.3048 mm) being preferred, and a bristle length from about (0.5 inch/12.7 mm) about (3 inches/76.2 mm), a bristle length of about (1.875 inches/47.625 mm) being preferred.
  • each brush can have a rotational speed from about 200 rpm to about 2000 rpm, a rotational speed of about 900 rpm being preferred.
  • the polymerizable, cross-linkable material, in the liquid carrier has a water-like viscosity, i.e., a viscosity from about one centipoise to about 10 centipoise.
  • the material M in the polymerizing and cross-linking zone Z 2, is polymerized and cross-linked in situ, whereby the liquid carrier is evolved, so as to form a composite web W ′, which comprises the fibrous web W and dispersed inclusions of the polymerized, cross-linked material.
  • Any suitable means (not shown) for electron beam irradiation is preferred as a means for polymerizing and cross-linking the material M ; an example is an Energy SciencesTM (Model) CB300 accelerator, as available from Energy Sciences, Inc.
  • the fibrous web W retaining the material M , in the liquid carrier, in dispersed inclusions may be initially exposed to 2 MRAD of such radiation on each side of the fibrous web W , and finally exposed to a curing dose of 8 MRAD on each side of the fibrous web W .
  • Any other suitable technique for electron beam irradiation may be instead used.
  • the polymerizable, cross-linkable material, in the liquid carrier is an aqueous solution of 60% concentration of 65% neutralized (on a weight basis) potassium acrylate, as neutralized with potassium hydroxide, as in the example given above, such inclusions in the composite web W ′ are inclusions of a potassium polyacrylate, from which a substantial part of the liquid carrier, i.e., water, has evolved.
  • the composite web W ′ may be further processed in known ways, e.g., compressed and cut-down to a useful size, whereupon the composite web W , as further processed, may be advantageously employed in or as an absorbent article useful in a disposable diaper, tampon, sanitary napkin, wound dressing, or similar of dissimilar product requiring absorbent properties.
  • the composite web W ′ may be also provided with one or more densified, paper-like layers (not shown) in a manner disclosed in the Burgeni, Mesek et al., and Repke patents noted above.
  • the fibrous web comprised 80% by weight of the first composite fiber noted above, and 20% by weight of the second composite fiber noted above, as carded into a nonwoven web having a basis weight of about (1.25 oz/yd2/42.382 g/m2) and thermally bonded by subjecting the nonwoven web to air heated to about (350°F/76.67°C) as the nonwoven web was pulled through a forced-air oven while the nonwoven web was supported on a screen.
  • the polymerizable, cross-linkable material in a liquid carrier, was an aqueous solution of 60% concentration of 65% neutralized (on a weight basis) potassium acrylate, as neutralized with potassium hydroxide.
  • the aqueous solution was flooded onto the fibrous web while the fibrous web was supported on a screen, which served as a carrier, until the fibrous web was saturated.
  • the saturated web, while supported on the screen serving as a carrier, was passed over a slot so as to be there exposed to a partial vacuum, which removed excess amounts of liquid until there was about a 7 to 1 ratio between the volume of liquid retained by the fibrous web and the weight of the fibrous web.
  • the fibrous web was moved through a zone wherein droplets of the aqueous solution were flicked onto opposite sides of the fibrous web, as the fibrous web was moved through the zone, by the improved method described above.
  • Two rotating brushes were used, one at each side of the fibrous web.
  • Each brush had a diameter of about (10.5 inches/266.7 mm) at the tips of its bristles, which were made of nylon, as noted above, each having an exposed length of about (1.875 inches/47.625 mm) and a diameter of about (0.012 inch/0.3048 mm).
  • Each brush was rotated, in the rotational senses described above, so that its bristles picked up the aqueous solution from a rotating roller wiped by the bristles.
  • Each roller had a diameter of about (6.5 inches/165.1 mm) and a rotational speed of about 80 rpm.
  • Each brush was above its associated roller. There was interference of about (0.2 inch/5.08 mm) between each brush and its associated roller.
  • Each brush was rotated at a rotational speed of about 600 rpm.
  • the fibrous web W was moved upwardly at a linear speed of about (60 fpm/15.24 m/min).
  • the fibrous web retaining the aqueous solution was subjected to electron beam irradiation with an initial exposure of (2 MRAD/500 ⁇ 10 ⁇ 5) on each side of the fibrous web, and with a curing dose of (8 MRAD/125 ⁇ 10 ⁇ 5) on each side of the fibrous web.
  • Demand absorbency of each comparative sample and free swell absorbency of each comparative sample were determined, in each instance with a test liquid, which was an aqueous solution of 1% sodium chloride.
  • Demand absorbency of each comparative sample was determined under a sample pressure of (0.5 psig/3.447 ⁇ 103 Pag) and a 15 cm negative head of the test liquid for thirty minutes, after which the absorbed volume was measured.
  • Free swell absorbency of each comparative sample was determined by allowing such comparative sample to swell to its absorbent capacity for two hours, after which the swollen sample was drained through filter paper until no more liquid drained from the swollen sample, whereupon absorbed volume was measured.
  • Each comparative sample was ground into a powder, which passed through a 20 mesh (U.S. mesh) screen.
  • examples 1 and 2 are believed to indicate that, if physical differences tend to be largely nullified as by grinding, a polymer having a given composition and resulting from the improved method used in each example has a molecular structure providing better absorbency, as compared to a polymer having the same composition but resulting from the conventional technique used in each example.
  • the improved method is believed to be also superior to known spraying techniques employing nozzles, particularly nozzles spraying in circular or oval patterns.
  • nozzles used in such techniques tend to provide non-uniform coverage, whereas the improved method can be readily controlled so as to provide more uniform coverage.
  • nozzles used in such spraying techniques tend to plug or clog intermittently, whereas the improved method does not require any element capable of plugging or clotting.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
EP90106820A 1989-04-10 1990-04-10 Fabrication d'une nappe de fibres composite ayant des propriétés d'absorption Withdrawn EP0396920A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33576489A 1989-04-10 1989-04-10
US335764 1989-04-10

Publications (1)

Publication Number Publication Date
EP0396920A1 true EP0396920A1 (fr) 1990-11-14

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EP90106820A Withdrawn EP0396920A1 (fr) 1989-04-10 1990-04-10 Fabrication d'une nappe de fibres composite ayant des propriétés d'absorption

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EP (1) EP0396920A1 (fr)
JP (1) JPH0382875A (fr)
CA (1) CA2012652A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594983A1 (fr) * 1992-10-29 1994-05-04 Kimberly-Clark Corporation Procédé d'application de revêtement à haute concentration et à prise de fluide faible à des matériaux, tel les non-tissés, utilisant un applicateur par pulvérisation à la brosse
WO1998035084A1 (fr) * 1997-02-10 1998-08-13 Achille Duflot Procede et installation de fixation de particules sur les fibres superficielles d'une nappe de fibres, nappe de fibres obtenue et article comportant une telle nappe
WO2003025054A1 (fr) * 2001-09-17 2003-03-27 Stockhausen Inc. Matiere cellulosique a pouvoir d'absorption ameliore
EP1548179A1 (fr) † 2002-09-04 2005-06-29 Daio Paper Corporation Procede de production d'un composite absorbant l'eau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE487058T1 (de) 2004-04-02 2010-11-15 Yamaha Motor Co Ltd Kraftstoffzuführvorrichtung und diese umfassendes fahrzeug

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200357A1 (de) * 1971-01-08 1972-07-20 Prett Konrad Dr Ing Einrichtung zum kontinuierlichen Auftrag von Fluessigkeiten auf Warenbahnen
GB1539049A (en) * 1975-05-20 1979-01-24 Johnson & Johnson Bonded non-woven fabrics and methods for manufacturing the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200357A1 (de) * 1971-01-08 1972-07-20 Prett Konrad Dr Ing Einrichtung zum kontinuierlichen Auftrag von Fluessigkeiten auf Warenbahnen
GB1539049A (en) * 1975-05-20 1979-01-24 Johnson & Johnson Bonded non-woven fabrics and methods for manufacturing the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594983A1 (fr) * 1992-10-29 1994-05-04 Kimberly-Clark Corporation Procédé d'application de revêtement à haute concentration et à prise de fluide faible à des matériaux, tel les non-tissés, utilisant un applicateur par pulvérisation à la brosse
WO1998035084A1 (fr) * 1997-02-10 1998-08-13 Achille Duflot Procede et installation de fixation de particules sur les fibres superficielles d'une nappe de fibres, nappe de fibres obtenue et article comportant une telle nappe
FR2759388A1 (fr) * 1997-02-10 1998-08-14 Achille Duflot Procede et installation de fixation de particules sur les fibres superficielles d'une nappe de fibres, nappe de fibres obtenue et article comportant une telle nappe
WO2003025054A1 (fr) * 2001-09-17 2003-03-27 Stockhausen Inc. Matiere cellulosique a pouvoir d'absorption ameliore
US6906131B2 (en) 2001-09-17 2005-06-14 Stockhausen Gmbh & Co. Kg Cellulose material with improved absorbency
EP1548179A1 (fr) † 2002-09-04 2005-06-29 Daio Paper Corporation Procede de production d'un composite absorbant l'eau
EP1548179B2 (fr) † 2002-09-04 2013-04-17 Daio Paper Corporation Procede de production d'un composite absorbant l'eau

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Publication number Publication date
CA2012652A1 (fr) 1990-10-10
JPH0382875A (ja) 1991-04-08

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