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Apparatus for producing strong and highly opaque random fibrous webs

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US3806289A
US3806289A US24137372A US3806289A US 3806289 A US3806289 A US 3806289A US 24137372 A US24137372 A US 24137372A US 3806289 A US3806289 A US 3806289A
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fibers
air
polymer
apparatus
means
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E Schwarz
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Kimberly-Clark Corp
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    • DTEXTILES; PAPER
    • D01NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/08Melt spinning methods
    • D01D5/098Melt spinning methods with simultaneous stretching
    • D01D5/0985Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/54Non-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 welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56Non-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 welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres

Abstract

Apparatus for producing a randomly mixed fibrous web of high strength and opacity. A thermoplastic polymer is extruded through a die having slots of varying length and cross-sectional area. Air at about the polymer melt temperature is impinged angularly on the fibers and allowed to expand thus cooling the fibers and breaking them up into varying dimensions as they are deposited on a carrier. In a preferred embodiment a controlled Coanda effect is applied so as to provide an overall wavy pattern of randomly mixed fibers.

Description

United States Patent [191 Schwarz APPARATUS FOR PRODUCING STRONG AND HIGHLY OPAQUE RANDOM FIBROUS WEBS [75] V Inventor: Eckhard C. A. Schwarz, Neenah,

Wis.

[73] Assignee: Kimberly-Clark Corp., Neenah,

Wis.

[22] Filed: Apr-5, 1972 [211 Appl.No.:241,373

[52] US. Cl 425/72, 264/115, 425/461 [51] Int. Cl B29f 3/08 [58] Field of Search 425/72, 83, 461; 264/115,

[ 56] References Cited 1 UNITED STATES PATENTS 12/1953 12/1962 10/1970 Stalego 264/121 X White et al. 264/121 X FOREIGN PATENTS OR APPLICATIONS 3/1969 Great Britain 264/210 R Pukacz 264/121 x [4 1 Apr.23, 1974 61,192 5/1948 Netherlands 425/72 437,193 11/1967 Switzerland 264/115 Primary ExaminerR. Spencer Annear Attorney, Agent, or FirmDaniel J. I-lanlon, Jr.; William D. Herrick; Raymond J. Miller 57 ABSTRACT Apparatus for producing a randomly mixed fibrous web of high strength and opacity. A thermoplastic polymer is extruded through a die having slots of varying length and cross-sectional area. Air at about the polymer melt temperature is impinged angularly on the fibers and allowed to expand thus cooling the fibers and breaking them up into varying dimensionsas they are deposited on a carrier. In a preferred embodiment a controlled Coanda effect is applied so as to' provide an overall wavy pattern of randomly mixed fibers. v

7 Claims, 8 Drawing Figirres LINEAR v POLYMER H EAT TO EXTRUDABLE MELT EXTRUDE THROUGH SLOTTED DIE WITH VARYING SLOTS IMPINGE FIBERS wITH AIR HIGH VELOCITY PULSED HEATED GAS COANDA EXPAND GAS COOL FIBERS COLLECT FIBRIDS AND Fl LAM ENTS FIG. I

PATENTEU APR 23 m4 SHEET 2 [1P4 FIG. 3

FIG.

FIG. 5

APPARATUS FOR PRODUCING STRONG AND HIGHLY OPAQUE RANDOM .FIBROUS WEBS BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates generally to nonwoven fibrous webs. More particularly, the invention relates-to extrusion apparatus that produce webs characterized by high Strength and opacity.

2. Description of the Prior Art It is known to form fibrous webs by drawing fibers from an extruder and depositing them on a moving carrier such as a rotating screen or moving wire. It is further known to perform the drawing step by impinging a current of air against the fibers. U. S. Pat. No. 3,509,009 to I-Iartmann, for example, discusses such methods and apparatus for carrying them out including extruder dies formed by grooves in wedges which are placed together so that the grooves are juxtaposed. As

the polymer is extruded, the mass is blown into fine fibers through the use of aircurrents and forms a web on a moving carrier. This patent teaches, however, that it is preferred to draw continuous filaments by entraining them in a gas stream directed into the filament path and depositing them on a foraminous support.

It is also known and disclosed in U. S. Pat. No. 3,488,819 to Jackson, for example, that the Coanda effect of a divergent nozzle may be utilized to oscillate an airjet causing an entrained yarn to be deposited on a carrier in continuous crosswise movement. In addition, the prior art contains teachings of the use of dies for extrusion having various shapes and configurations of spinneret holes; such are disclosed, for example, in U. S. Pat. Nos. 3,249,669 and 3,528,129.

SUMMARY OF THE INVENTION The present invention has as a primary object to provide improvements in apparatus for-producing nonwoven fibrous webs of exceptional strength and' opacity for a given weight. Other objects and advantages will be apparent upon reference to the drawings and to the detailed description below. r

In accordance with the invention the improved webs are formed by heating a thermoplastic polymer to produce an extrudable melt, extruding the melt through a slotted film die having slots of correspondingly varying length and cross section, drawing the melt into fibers by impinging a gas at the melt temperature at an angle to the extruding polymer, cooling the gas and fibers by al lowing the gas to expand thereby causing the fibers to break up in varying lengths, and collecting the broken fibers into a web. In a preferred embodiment the apparatus includes means for providing a Coanda effect and angular deposition in an interlocking crosswise wave pattern.

BRIEFDESCRIPTION OF THE DRAWINGS showing means for provid- FIG. 8 schematically illustrates aformed web portion.

DETAILED DESCRIPTION OF THE INVENTION The apparatus of the invention will now be described in detail with particular reference to the preferred embodiments illustrated in the drawings.

Turning to FIG. 1, the process involves first the selection of a suitable thermoplastic polymer. Many such polymers capable of extrusion in fiber form are avail-' able, and the particular one to be utilized is a matter of choice based usually on considerations such as cost, melt temperature, fiber properties, and extrusion properties, as well as desired web characteristics. Examples of polymers contemplated for use in the invention include the following: polyolefins, nylons, polyesters, and

polyacetals. However, it will be recognized that other I slots with correspondingly varying slot length and cross sectional area dimensions. The phrase correspondingly varying" is used to indicate that the length and cross section area dimensions must vary in the same mannerl 'lhat is, the larger the slot length, the larger will be its cross sectional area. In general, 'each slot is preferably of uniform dimensions which are different from those of adjacent slots..The fibers emerging from the die are impinged by high velocity air at about, the melt temperature directed at an angle of from about 10 to 45 to the fiber orientation direction. The gas is thereafter allowed to expand rapidly causing cooling and fracturing of many of the fibers into a mixture of fibrids, short fibers and filaments of widely varying di mensions. In, the terms of this invention the words frbrids, short fibers and filaments are defined as follows: filaments aresubstantially continous strands generally of l to 20 denier, short fibers are discontinuous strands Vi inch to 3 inches inlength andgenerally of V: to 3 denier, and fibrids are short strands of less than V4 inch in length and generally less than A denier. This mixture is collected on a moving carrier such as a screen or the like and forms a strong, opaque web which may be removed and wound into rolls with apparatus conventionally used for such purposes. By

opaque" it is meant that the web has high opacity for As indicated by the flow diagram, FIG. I, an alternative embodiment includes the step of using a Coanda arrangement to direct the fibers. across the receiving carrier. Pulsed air may be used to cause the fibers to deposit in wavy patterns across the carrier surface. This manner of deposition increases the interlocking nature of the random pattern of the fiber-filament-fibrid mixture thus augmenting strength and opacity.

Turning nowto FIGS. 2 to 5, the invention willbe described in terms of the embodiment illustrated therein.

where particularly suitable for use with polyolefins, e.g., polypropylene, and results in a web having the previously I mentioned advantages of strength, opacity, and gross uniformity of formation. Of course, the particular dimensionsselected involve largely a matter of choice depending upon the desired fiber characteristics in the web and will, in some cases, differ widely from the example recited. In particular, the specific slot crosssection shape need not be as shown since it is recognized that the filaments, fibers, and fibrids will tend to become round in cross-section as cooling takes place.

It is only critical that the slots 20 exhibit significant variation in both length and cross-sectional area across the lip 16 of die 10. The ratio of length to cross section is preferably selected for each polymer to result in generally equal shear stresses for each slot. Thus, the conditions are such that in all cases,

Pa=sCL P die pressure, psi;

C slot cross sectional circumference, in.

s shear stress, lbs./in.

a slot cross section, in.

L slot length, in. thus, s/P constant= a/CL for each slot. While the circumference of the slots depends on the cross sectional sharia. sheath s me. h p is. s fer a." slots, it

will vary in proportion to V5. Hence, it is preferred that the individual slot lengths be proportioned'according to V5 to maintain a constant value of 'a/CL. By keeping the shear stress generally equal in all slots, flow through each one'is assured. The particular slot cross section shape depends upon the desired properties and end use. It may be round, rectangular, or triangular, for example. A dog-bone shape may be used to produce an effect of high luster.

. The number of teeth 18 per inch of width will simi-' larly be dependent upon desired fiber properties such as denier as well as web properties such as basis weight. However, it is contemplated that the typical ranges for these dimensions for producing a web with paper-like strength and opacity will be as follows: length of groove (L,L) 0.008 to 0.5 inch; cross sectional area of groove 0.0001 in. to 0.0025 in., preferably 0.0002 in. to

0.0015 in.; and number of grooves from about 5 to 100 within chamber 22.As shown in cross-section the housing. includesdual air manifolds 24 which direct air flow frpm a source "at elevated temperature (not shown) down the beveled edges of die 10 to lip 16 and out through nozzle 26. In accordance with the invention in a preferred embodiment, nozzle 26 includes an outlet 28 having a nearly symmetrical Coanda configuration which has been exaggerated in the drawing for illustrative purposes. By avoiding complete symmetry it is possible to produce higher stability on one side of nozzle 26 to which the fibers will naturally be drawn as they are formed; in the illustrated case the preferred side will be side 30 which has a slightly smaller, by about 1 to 10 per cent, for example, radius of curvature when compared to the radius of side 36. Channel 32 is pro vided in side 30 and connected to a source (not shown) of pulsed air. Such sources are well known and, in

longer fibers. The upper limit of 2 1,600 yards per minute has been selected as representing sonic velocity. It is recognized; however, that with special orifice designs, higher rates are obtainable; when available, these higher air rates may also be utilized with the present invention.

w The samba the fibers warlidaamriany tend to take due to the slight dissymetryof the Coanda configuration is illustrated by arrow A of FIG. 6,. As the air expands, rapid cooling of the polymer filaments 34 takes place causing them to separate into the various lengths forfilaments, short fibers, and fibrids. Air under pressure of about 0.1 to l psig, for example, is pulsed through channel 32 and, when air is flowing in the channel, causes displacement of the fiber flow towards side 36. Channel 32 is preferably positioned so that the excited pulsed air moves generally at a tangent to the outlet-curve of side 36 on nozzle 26, thus tending to urge the fibers in that direction as well, as indicated by arrow B. When air is not flowing in channel 32, the fibers will tend to resume the original flow direction A. The result, indicated by arrow C, is a generally sine wave deposition path in the direction of travel of carrier 38 with afrequency that depends upon the pulsing frequency. This frequency maybe, for example, in the range of 2 to 600 cycles per second. In a critically designed system, for example, an oscillating diaphragm of an earphone placed in channel 32 could beused to replace the air pulses and induce vibrations and fiber deposition at'a desired frequency.

deposited by nozzle 26. As shown, it is preferred thatdie 10 be disposed'angularly with respect to the lateral direction of movement of surface 38. The angle, a, se lected is not critical and preferably may vary, for exarnq In operation, the polymer is extruded through die 10 pie, between 30 and 60. It has been found that this angular deposition in combination with the controlled Coanda effect results in wavy motion of the fibers in the direction of movement of surface 38. The fibers are caught in this interlocking pattern as a random mixture of oriented filaments, short fibers and fibrids. The rapid cooling caused by the nozzle expansion prevents deorientation of the fiber molecules and shrinking of the fiber ends which has previously resulted in balling and lumping producing poor formation characteristics.

FIG. 8 schematically illustrates the web 40 formed on surface 38 which may be subsequently treated by methods and for purposes that are well known. For example calendaring may be used, and the resulting sheet will display increased stength and density due to the fibrids intermixedbetween the fibers.,These fibrids also increase the total inner surface area thus providing in- Y I forcing material for tapes. Other uses for specific combinations will be apparent to those skilled in this art.

In summary, the invention comprises an improved apparatus for use in a methodfor producing strong, opaque fibrous webs including the steps of extruding a polymer through a die having slotsof corresponding varying dimensions and impinging the fibers at an angle with heated, high velocity air. The fibers are cooled by rapid air expansion and collected on a carrier to form a web. A controlled Coanda may-be used and the fibers deposited at an angle with respect to the carrier in preferred arangements. The apparatus of the invention includes a die having a lip with slots of correspondingly varying dimensions as well as means for applying a con trolled Coanda effect and angular deposition in the preferred embodiments.

, I claim: i

LApparatus for producing a high strength opaque web of random filaments, fibers. and fibrids; from I a thermoplastic polymer comprising, in combination,

a. means for providing the polymer in extrudable form; b. an extruder adapted to receive said polymer and having a slotted die with slots of correspondingly varying length and cross sectional area dimensions selected to result in generally equal shear stresses for each slot;

c. means for providing high velocity air at about the extrusion temperature of said. polymer;

d. conduits for said air causing impingement with-the extruding polymer as it emerges from the extruder, said impingement being from opposing sides at an angle of from about l0 to 45 to the fiber'direction and tending to draw and orient said emerging fibers; j

e. adiverging nozzle configuration for rapidly expanding and cooling said air and-extruding polymers; and

f. means for collecting said extruding polymer as it is formed into filaments and fibrids.

2. Apparatus of claim 1 wherein said extruder and die are disposed angularly with respect to the collecting means. i

3. Apparatus of claim 1 further including means for providing a Coanda effect wherein said diverging nozzle has a nearly symmetrical Coanda configuration and pulsing means are provided to disturb the Coanda cf feet with the result that said extruding polymer is deposited on said collecting means in aninterlocking wave pattern. 7

4..Apparatus of claim 1 wherein said die slots vary regularly in length .inthe range of from about 0.008

inch to 0.500 inch andin cross sectional area in the range of from 0.0001 in. to about 0.0025in. with from five to slots per inch providing generally equal shear stresses ineach slot.- n

5. The apparatus of claim 3 wherein said pulsing means is a conduit for pulsed air at a pressure slightly 7. The apparatus of claim 5' wherein said pulsing means includes an oscillating diaphragm.

' a: is =0: s g

Claims (7)

1. Apparatus for producing a high strength opaque web of random filaments, fibers and fibrids, from a thermoplastic polymer comprising, in combination, a. means for providing the polymer in extrudable form; b. an extruder adapted to receive said polymer and having a slotted die with slots of correspondingly varying length and cross sectional area dimensions selected to result in generally equal shear stresses for each slot; c. means for providing high velocity air at about the extrusion temperature of said polymer; d. conduits for said air causing impingement with the extruding polymer as it emerges from the extruder, said impingement being from opposing sides at an angle of from about 10* to 45* to the fiber direction and tending to draw and orient said emerging fibers; e. a diverging nozzle configuration for rapidly expanding and cooling said air and extruding polymers; and f. means for collecting said extruding polymer as it is formed into filaments and fibrids.
2. Apparatus of claim 1 wherein said extruder and die are disposed angularly with respect to the collecting means.
3. Apparatus of claim 1 further including means for providing a Coanda effect wherein said diverging nozzle has a nearly symmetrical Coanda configuration and pulsing means are provided to disturb the Coanda effect with the result that said extruding polymer is deposited on said collecting means in an interlocking wave pattern.
4. Apparatus of claim 1 wherein said die slots vary regularly in length in the range of from about 0.008 inch to 0.500 inch and in cross sectional area in the range of from 0.0001 in.2 to about 0.0025 in.2 with from five to 100 slots per inch providing generally equal shear stresses in each slot.
5. The apparatus of claim 3 wherein said pulsing means is a conduit for pulsed air at a pressure slightly higher than said heated air.
6. The apparatus of claim 5 wherein said conduit provides air pulsed at a frequency of from 2 to about 600 cycles per second which is directed at an angle tangent to the outlet curve side of said diverging nozzle.
7. The apparatus of claim 5 wherein said pulsing means includes an oscillating diaphragm.
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Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928641A (en) * 1974-10-29 1975-12-23 Ralston Purina Co Method of collecting protein filaments
US3932081A (en) * 1972-12-22 1976-01-13 Tamag/Basel Ag Extruder nozzle for shaping a pulp to form smokable strands or fibers
US3981650A (en) * 1975-01-16 1976-09-21 Beloit Corporation Melt blowing intermixed filaments of two different polymers
US4001357A (en) * 1972-08-02 1977-01-04 Alfred Walz Process for the manufacture of fibers from fusible materials
US4013816A (en) * 1975-11-20 1977-03-22 Draper Products, Inc. Stretchable spun-bonded polyolefin web
US4489462A (en) * 1983-03-17 1984-12-25 E. I. Du Pont De Nemours And Company Air flow control apparatus for a fiber air-lay machine
US4720252A (en) * 1986-09-09 1988-01-19 Kimberly-Clark Corporation Slotted melt-blown die head
US4731215A (en) * 1982-06-07 1988-03-15 Biax Fiberfilm Corporation Process for forming non-woven webs from highly oriented melt blown fibers
EP0322136A2 (en) * 1987-12-21 1989-06-28 Minnesota Mining And Manufacturing Company Oriented melt-blown fibers, processes for making such fibers, and webs made from such fibers
US5037409A (en) * 1990-07-12 1991-08-06 Kimberly-Clark Corporation Absorbent article having a hydrophilic flow-modulating layer
US5075068A (en) * 1990-10-11 1991-12-24 Exxon Chemical Patents Inc. Method and apparatus for treating meltblown filaments
US5098636A (en) * 1989-08-18 1992-03-24 Reifenhauser Gmbh & Co. Maschinenfabrik Method of producing plastic fibers or filaments, preferably in conjunction with the formation of nonwoven fabric
US5114631A (en) * 1990-04-12 1992-05-19 Bayer Aktiengesellschaft Process for the production from thermoplastic polymers of superfine fibre nonwoven fabrics
WO1992010599A1 (en) * 1990-12-15 1992-06-25 Peter Roger Nyssen Method and device for manufacturing ultrafine fibres from thermoplastics
US5192606A (en) * 1991-09-11 1993-03-09 Kimberly-Clark Corporation Absorbent article having a liner which exhibits improved softness and dryness, and provides for rapid uptake of liquid
US5273565A (en) * 1992-10-14 1993-12-28 Exxon Chemical Patents Inc. Meltblown fabric
US5354378A (en) * 1992-07-08 1994-10-11 Nordson Corporation Slot nozzle apparatus for applying coatings to bottles
US5364382A (en) * 1989-05-08 1994-11-15 Kimberly-Clark Corporation Absorbent structure having improved fluid surge management and product incorporating same
US5366793A (en) * 1992-04-07 1994-11-22 Kimberly Clark Co Anisotropic nonwoven fibrous web
US5409733A (en) * 1992-07-08 1995-04-25 Nordson Corporation Apparatus and methods for applying conformal coatings to electronic circuit boards
US5418009A (en) * 1992-07-08 1995-05-23 Nordson Corporation Apparatus and methods for intermittently applying discrete adhesive coatings
US5421921A (en) * 1992-07-08 1995-06-06 Nordson Corporation Segmented slot die for air spray of fibers
US5423935A (en) * 1992-07-08 1995-06-13 Nordson Corporation Methods for applying discrete coatings
US5429840A (en) * 1992-07-08 1995-07-04 Nordson Corporation Apparatus and methods for applying discrete foam coatings
US5509915A (en) * 1991-09-11 1996-04-23 Kimberly-Clark Corporation Thin absorbent article having rapid uptake of liquid
WO1997049854A1 (en) * 1996-06-27 1997-12-31 Kimberly-Clark Worldwide, Inc. Nonwoven fabrics having improved uniformity
DE19638994A1 (en) * 1996-09-23 1998-03-26 Buehler Ag Device for homogenising, mixing and / or granulating of chemicals
US5853635A (en) * 1997-06-18 1998-12-29 Kimberly-Clark Worldwide, Inc. Method of making heteroconstituent and layered nonwoven materials
US5913329A (en) * 1995-12-15 1999-06-22 Kimberly-Clark Worldwide, Inc. High temperature, high speed rotary valve
US5997272A (en) * 1996-03-27 1999-12-07 Xerox Corporation Extruder die insert plate system
EP0984083A2 (en) * 1998-08-31 2000-03-08 Illinois Tool Works Inc. Omega spray pattern and method therefor
US6183670B1 (en) 1997-09-23 2001-02-06 Leonard Torobin Method and apparatus for producing high efficiency fibrous media incorporating discontinuous sub-micron diameter fibers, and web media formed thereby
US6244845B1 (en) * 1999-05-04 2001-06-12 The University Of Tennessee Research Corporation Serrated slit melt blown die nosepiece
US6315806B1 (en) 1997-09-23 2001-11-13 Leonard Torobin Method and apparatus for producing high efficiency fibrous media incorporating discontinuous sub-micron diameter fibers, and web media formed thereby
WO2002008502A1 (en) * 2000-07-20 2002-01-31 Rtica, Inc. Melt blowing apparatus with parallel flow filament attenuating slot
US6387471B1 (en) 1999-03-31 2002-05-14 Kimberly-Clark Worldwide, Inc. Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US20020104608A1 (en) * 2000-05-15 2002-08-08 Welch Howard M. Method and apparatus for producing laminated articles
US20020158362A1 (en) * 2001-02-27 2002-10-31 Nippon Petrochemicals , Co., Ltd. Method of and apparatus for manufacturing a web having filaments aligned in a transverse direction
US6547915B2 (en) 1999-04-15 2003-04-15 Kimberly-Clark Worldwide, Inc. Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US20030109842A1 (en) * 2001-12-12 2003-06-12 Louis Raymond Gerard St. Separated targeted elastic zone for improved process and product function
US20030114824A1 (en) * 2001-12-19 2003-06-19 Odorzynski Thomas W. Three dimensional profiling of an elastic hot melt pressure sensitive adhesive to provide areas of differential tension
US20030124331A1 (en) * 2001-12-28 2003-07-03 Charles Morell Elastic strand bonded laminate
US6660218B2 (en) 2001-07-31 2003-12-09 E.I. Du Pont De Nemours And Company Filament draw jet apparatus and process
US20040006324A1 (en) * 2002-07-02 2004-01-08 Peiguang Zhou Garment including an elastomeric composite laminate
US20040005835A1 (en) * 2002-07-02 2004-01-08 Peiguang Zhou Elastic strand laminate
US6680021B1 (en) 1996-07-16 2004-01-20 Illinois Toolworks Inc. Meltblowing method and system
US20040019343A1 (en) * 2000-05-15 2004-01-29 Olson Christopher Peter Garment having an apparent elastic band
US6730344B1 (en) * 1998-01-21 2004-05-04 Cadbury Schweppes Plc Method and apparatus of coating articles
US20040102123A1 (en) * 2002-11-21 2004-05-27 Bowen Uyles Woodrow High strength uniformity nonwoven laminate and process therefor
US20040102122A1 (en) * 2002-11-21 2004-05-27 Boney Lee Cullen Uniform nonwoven material and laminate and process therefor
WO2004101869A1 (en) * 2003-05-16 2004-11-25 Corovin Gmbh Method and apparatus for producing spunbonded fabrics of filaments
US6833179B2 (en) 2000-05-15 2004-12-21 Kimberly-Clark Worldwide, Inc. Targeted elastic laminate having zones of different basis weights
US20040266300A1 (en) * 2003-06-30 2004-12-30 Isele Olaf Erik Alexander Articles containing nanofibers produced from a low energy process
WO2005005704A2 (en) * 2003-06-30 2005-01-20 The Procter & Gamble Company Particulates in nanofiber webs
WO2005004767A2 (en) * 2003-06-30 2005-01-20 The Procter & Gamble Company Hygiene articles containing nanofibers
US6890167B1 (en) 1996-10-08 2005-05-10 Illinois Tool Works Inc. Meltblowing apparatus
US20050136781A1 (en) * 2003-12-22 2005-06-23 Lassig John J. Apparatus and method for nonwoven fibrous web
US20050142339A1 (en) * 2003-12-30 2005-06-30 Price Cindy L. Reinforced elastic laminate
US20060014460A1 (en) * 2004-04-19 2006-01-19 Alexander Isele Olaf E Articles containing nanofibers for use as barriers
US7316840B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. Strand-reinforced composite material
US7316842B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. High-viscosity elastomeric adhesive composition
US20080122143A1 (en) * 2006-11-28 2008-05-29 Herman Peter K Apparatus, system, and method for maximizing ultrafine meltblown fiber attenuation
US20080145530A1 (en) * 2006-12-13 2008-06-19 Nordson Corporation Multi-plate nozzle and method for dispensing random pattern of adhesive filaments
US7601657B2 (en) 2003-12-31 2009-10-13 Kimberly-Clark Worldwide, Inc. Single sided stretch bonded laminates, and methods of making same
US20110244066A1 (en) * 2008-11-13 2011-10-06 Oerlikon Textile Gmbh & Co. Kg Apparatus for producing a spunbonded fabric
US8074902B2 (en) 2008-04-14 2011-12-13 Nordson Corporation Nozzle and method for dispensing random pattern of adhesive filaments
US8395016B2 (en) 2003-06-30 2013-03-12 The Procter & Gamble Company Articles containing nanofibers produced from low melt flow rate polymers
US9663883B2 (en) 2004-04-19 2017-05-30 The Procter & Gamble Company Methods of producing fibers, nonwovens and articles containing nanofibers from broad molecular weight distribution polymers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662576A (en) * 1951-05-23 1953-12-15 Pukacz Chaim Bernard Machine for the continuous manufacture of a stuffing material
US3070420A (en) * 1961-07-28 1962-12-25 George D White Method of making spherical actinide carbide
GB1144863A (en) * 1967-01-12 1969-03-12 Hermann Berstorff Maschb Ansta Method of producing webs of material of uniform longitudinal thickness
US3532479A (en) * 1969-07-15 1970-10-06 Owens Corning Fiberglass Corp Apparatus for producing glass fibers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2662576A (en) * 1951-05-23 1953-12-15 Pukacz Chaim Bernard Machine for the continuous manufacture of a stuffing material
US3070420A (en) * 1961-07-28 1962-12-25 George D White Method of making spherical actinide carbide
GB1144863A (en) * 1967-01-12 1969-03-12 Hermann Berstorff Maschb Ansta Method of producing webs of material of uniform longitudinal thickness
US3532479A (en) * 1969-07-15 1970-10-06 Owens Corning Fiberglass Corp Apparatus for producing glass fibers

Cited By (114)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001357A (en) * 1972-08-02 1977-01-04 Alfred Walz Process for the manufacture of fibers from fusible materials
US3932081A (en) * 1972-12-22 1976-01-13 Tamag/Basel Ag Extruder nozzle for shaping a pulp to form smokable strands or fibers
US3928641A (en) * 1974-10-29 1975-12-23 Ralston Purina Co Method of collecting protein filaments
US3981650A (en) * 1975-01-16 1976-09-21 Beloit Corporation Melt blowing intermixed filaments of two different polymers
US4013816A (en) * 1975-11-20 1977-03-22 Draper Products, Inc. Stretchable spun-bonded polyolefin web
US4731215A (en) * 1982-06-07 1988-03-15 Biax Fiberfilm Corporation Process for forming non-woven webs from highly oriented melt blown fibers
US4489462A (en) * 1983-03-17 1984-12-25 E. I. Du Pont De Nemours And Company Air flow control apparatus for a fiber air-lay machine
US4720252A (en) * 1986-09-09 1988-01-19 Kimberly-Clark Corporation Slotted melt-blown die head
EP0322136A2 (en) * 1987-12-21 1989-06-28 Minnesota Mining And Manufacturing Company Oriented melt-blown fibers, processes for making such fibers, and webs made from such fibers
EP0322136A3 (en) * 1987-12-21 1990-05-02 Minnesota Mining And Manufacturing Company Oriented melt-blown fibers, processes for making such fibers, and webs made from such fibers
US5429629A (en) * 1989-05-08 1995-07-04 Kimberly-Clark Corporation Absorbent structure having improved fluid surge management and product incorporating same
US5364382A (en) * 1989-05-08 1994-11-15 Kimberly-Clark Corporation Absorbent structure having improved fluid surge management and product incorporating same
US5098636A (en) * 1989-08-18 1992-03-24 Reifenhauser Gmbh & Co. Maschinenfabrik Method of producing plastic fibers or filaments, preferably in conjunction with the formation of nonwoven fabric
US5114631A (en) * 1990-04-12 1992-05-19 Bayer Aktiengesellschaft Process for the production from thermoplastic polymers of superfine fibre nonwoven fabrics
US5037409A (en) * 1990-07-12 1991-08-06 Kimberly-Clark Corporation Absorbent article having a hydrophilic flow-modulating layer
WO1992007122A1 (en) * 1990-10-11 1992-04-30 Exxon Chemical Patents Inc. Method and apparatus for treating meltblown filaments
US5075068A (en) * 1990-10-11 1991-12-24 Exxon Chemical Patents Inc. Method and apparatus for treating meltblown filaments
US5260003A (en) * 1990-12-15 1993-11-09 Nyssen Peter R Method and device for manufacturing ultrafine fibres from thermoplastic polymers
WO1992010599A1 (en) * 1990-12-15 1992-06-25 Peter Roger Nyssen Method and device for manufacturing ultrafine fibres from thermoplastics
US5509915A (en) * 1991-09-11 1996-04-23 Kimberly-Clark Corporation Thin absorbent article having rapid uptake of liquid
US5192606A (en) * 1991-09-11 1993-03-09 Kimberly-Clark Corporation Absorbent article having a liner which exhibits improved softness and dryness, and provides for rapid uptake of liquid
US5366793A (en) * 1992-04-07 1994-11-22 Kimberly Clark Co Anisotropic nonwoven fibrous web
US5683036A (en) * 1992-07-08 1997-11-04 Nordson Corporation Apparatus for applying discrete coatings
US5418009A (en) * 1992-07-08 1995-05-23 Nordson Corporation Apparatus and methods for intermittently applying discrete adhesive coatings
US5421921A (en) * 1992-07-08 1995-06-06 Nordson Corporation Segmented slot die for air spray of fibers
US5423935A (en) * 1992-07-08 1995-06-13 Nordson Corporation Methods for applying discrete coatings
US5409733A (en) * 1992-07-08 1995-04-25 Nordson Corporation Apparatus and methods for applying conformal coatings to electronic circuit boards
US5354378A (en) * 1992-07-08 1994-10-11 Nordson Corporation Slot nozzle apparatus for applying coatings to bottles
US5685911A (en) * 1992-07-08 1997-11-11 Nordson Corporation Apparatus for intermittently applying discrete adhesive coatings
US5524828A (en) * 1992-07-08 1996-06-11 Nordson Corporation Apparatus for applying discrete foam coatings
US5533675A (en) * 1992-07-08 1996-07-09 Nordson Corporation Apparatus for applying discrete coatings
US5429840A (en) * 1992-07-08 1995-07-04 Nordson Corporation Apparatus and methods for applying discrete foam coatings
US5273565A (en) * 1992-10-14 1993-12-28 Exxon Chemical Patents Inc. Meltblown fabric
US5913329A (en) * 1995-12-15 1999-06-22 Kimberly-Clark Worldwide, Inc. High temperature, high speed rotary valve
US5997272A (en) * 1996-03-27 1999-12-07 Xerox Corporation Extruder die insert plate system
US5935612A (en) * 1996-06-27 1999-08-10 Kimberly-Clark Worldwide, Inc. Pneumatic chamber having grooved walls for producing uniform nonwoven fabrics
WO1997049854A1 (en) * 1996-06-27 1997-12-31 Kimberly-Clark Worldwide, Inc. Nonwoven fabrics having improved uniformity
US6680021B1 (en) 1996-07-16 2004-01-20 Illinois Toolworks Inc. Meltblowing method and system
DE19638994A1 (en) * 1996-09-23 1998-03-26 Buehler Ag Device for homogenising, mixing and / or granulating of chemicals
DE19638994B4 (en) * 1996-09-23 2009-02-26 Bühler AG Device for homogenising, mixing and / or granulating of chemicals
US6890167B1 (en) 1996-10-08 2005-05-10 Illinois Tool Works Inc. Meltblowing apparatus
US5853635A (en) * 1997-06-18 1998-12-29 Kimberly-Clark Worldwide, Inc. Method of making heteroconstituent and layered nonwoven materials
US6315806B1 (en) 1997-09-23 2001-11-13 Leonard Torobin Method and apparatus for producing high efficiency fibrous media incorporating discontinuous sub-micron diameter fibers, and web media formed thereby
US6183670B1 (en) 1997-09-23 2001-02-06 Leonard Torobin Method and apparatus for producing high efficiency fibrous media incorporating discontinuous sub-micron diameter fibers, and web media formed thereby
US7055456B2 (en) * 1998-01-21 2006-06-06 Cadbury Schweppes Plc Method and apparatus of coating articles
US20050095329A1 (en) * 1998-01-21 2005-05-05 Cadbury Schwepps Plc Method and apparatus of coating articles
US20040163586A1 (en) * 1998-01-21 2004-08-26 Cadbury Schweppes Plc Method and apparatus of coating articles
US6730344B1 (en) * 1998-01-21 2004-05-04 Cadbury Schweppes Plc Method and apparatus of coating articles
US7669546B2 (en) 1998-01-21 2010-03-02 Cadbury Schweppes Limited Method and apparatus of coating articles
US6461430B1 (en) 1998-08-31 2002-10-08 Illinois Tool Works Inc. Omega spray pattern and method therefor
US6200635B1 (en) 1998-08-31 2001-03-13 Illinois Tool Works Inc. Omega spray pattern and method therefor
EP0984083A3 (en) * 1998-08-31 2000-04-19 Illinois Tool Works Inc. Omega spray pattern and method therefor
US6197406B1 (en) 1998-08-31 2001-03-06 Illinois Tool Works Inc. Omega spray pattern
EP0984083A2 (en) * 1998-08-31 2000-03-08 Illinois Tool Works Inc. Omega spray pattern and method therefor
US6387471B1 (en) 1999-03-31 2002-05-14 Kimberly-Clark Worldwide, Inc. Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US6547915B2 (en) 1999-04-15 2003-04-15 Kimberly-Clark Worldwide, Inc. Creep resistant composite elastic material with improved aesthetics, dimensional stability and inherent latency and method of producing same
US6244845B1 (en) * 1999-05-04 2001-06-12 The University Of Tennessee Research Corporation Serrated slit melt blown die nosepiece
US6969441B2 (en) 2000-05-15 2005-11-29 Kimberly-Clark Worldwide, Inc. Method and apparatus for producing laminated articles
US6833179B2 (en) 2000-05-15 2004-12-21 Kimberly-Clark Worldwide, Inc. Targeted elastic laminate having zones of different basis weights
US20020104608A1 (en) * 2000-05-15 2002-08-08 Welch Howard M. Method and apparatus for producing laminated articles
US8182457B2 (en) 2000-05-15 2012-05-22 Kimberly-Clark Worldwide, Inc. Garment having an apparent elastic band
US20040019343A1 (en) * 2000-05-15 2004-01-29 Olson Christopher Peter Garment having an apparent elastic band
WO2002008502A1 (en) * 2000-07-20 2002-01-31 Rtica, Inc. Melt blowing apparatus with parallel flow filament attenuating slot
US6984350B2 (en) * 2001-02-27 2006-01-10 Nippon Petrochemicals Co., Ltd. Method of and apparatus for manufacturing a web having filaments aligned in a transverse direction
US20020158362A1 (en) * 2001-02-27 2002-10-31 Nippon Petrochemicals , Co., Ltd. Method of and apparatus for manufacturing a web having filaments aligned in a transverse direction
US6660218B2 (en) 2001-07-31 2003-12-09 E.I. Du Pont De Nemours And Company Filament draw jet apparatus and process
US20030109842A1 (en) * 2001-12-12 2003-06-12 Louis Raymond Gerard St. Separated targeted elastic zone for improved process and product function
US20030114824A1 (en) * 2001-12-19 2003-06-19 Odorzynski Thomas W. Three dimensional profiling of an elastic hot melt pressure sensitive adhesive to provide areas of differential tension
US6939334B2 (en) 2001-12-19 2005-09-06 Kimberly-Clark Worldwide, Inc. Three dimensional profiling of an elastic hot melt pressure sensitive adhesive to provide areas of differential tension
US6902796B2 (en) 2001-12-28 2005-06-07 Kimberly-Clark Worldwide, Inc. Elastic strand bonded laminate
US20030124331A1 (en) * 2001-12-28 2003-07-03 Charles Morell Elastic strand bonded laminate
US7015155B2 (en) 2002-07-02 2006-03-21 Kimberly-Clark Worldwide, Inc. Elastomeric adhesive
US7316842B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. High-viscosity elastomeric adhesive composition
US6978486B2 (en) 2002-07-02 2005-12-27 Kimberly-Clark Worldwide, Inc. Garment including an elastomeric composite laminate
US7923505B2 (en) 2002-07-02 2011-04-12 Kimberly-Clark Worldwide, Inc. High-viscosity elastomeric adhesive composition
US6967178B2 (en) 2002-07-02 2005-11-22 Kimberly-Clark Worldwide, Inc. Elastic strand laminate
US20040005834A1 (en) * 2002-07-02 2004-01-08 Peiguang Zhou Elastomeric adhesive
US20040006324A1 (en) * 2002-07-02 2004-01-08 Peiguang Zhou Garment including an elastomeric composite laminate
US7316840B2 (en) 2002-07-02 2008-01-08 Kimberly-Clark Worldwide, Inc. Strand-reinforced composite material
US20040005835A1 (en) * 2002-07-02 2004-01-08 Peiguang Zhou Elastic strand laminate
US6989125B2 (en) 2002-11-21 2006-01-24 Kimberly-Clark Worldwide, Inc. Process of making a nonwoven web
US20040102123A1 (en) * 2002-11-21 2004-05-27 Bowen Uyles Woodrow High strength uniformity nonwoven laminate and process therefor
US20040102122A1 (en) * 2002-11-21 2004-05-27 Boney Lee Cullen Uniform nonwoven material and laminate and process therefor
WO2004101869A1 (en) * 2003-05-16 2004-11-25 Corovin Gmbh Method and apparatus for producing spunbonded fabrics of filaments
US20070090555A1 (en) * 2003-05-16 2007-04-26 Henning Roettger Method and apparatus for producing spunbonded fabrics of filaments
WO2005004767A2 (en) * 2003-06-30 2005-01-20 The Procter & Gamble Company Hygiene articles containing nanofibers
WO2005005704A3 (en) * 2003-06-30 2005-04-14 Procter & Gamble Particulates in nanofiber webs
WO2005004768A2 (en) * 2003-06-30 2005-01-20 The Procter & Gamble Company Articles containing nanofibers produced from a low energy process
US8835709B2 (en) 2003-06-30 2014-09-16 The Procter & Gamble Company Articles containing nanofibers produced from low melt flow rate polymers
US9138359B2 (en) 2003-06-30 2015-09-22 The Procter & Gamble Company Hygiene articles containing nanofibers
WO2005004767A3 (en) * 2003-06-30 2005-04-14 Procter & Gamble Hygiene articles containing nanofibers
WO2005005704A2 (en) * 2003-06-30 2005-01-20 The Procter & Gamble Company Particulates in nanofiber webs
US8487156B2 (en) 2003-06-30 2013-07-16 The Procter & Gamble Company Hygiene articles containing nanofibers
US8395016B2 (en) 2003-06-30 2013-03-12 The Procter & Gamble Company Articles containing nanofibers produced from low melt flow rate polymers
US20040266300A1 (en) * 2003-06-30 2004-12-30 Isele Olaf Erik Alexander Articles containing nanofibers produced from a low energy process
WO2005004768A3 (en) * 2003-06-30 2005-04-14 Procter & Gamble Articles containing nanofibers produced from a low energy process
CN100564643C (en) 2003-06-30 2009-12-02 宝洁公司 Articles containing nanofibers produced from a low energy process
CN100575586C (en) 2003-06-30 2009-12-30 宝洁公司 Particulates in nanofiber webs
CN1813089B (en) 2003-06-30 2011-05-11 宝洁公司 Hygiene articles containing nanofibers
US7168932B2 (en) 2003-12-22 2007-01-30 Kimberly-Clark Worldwide, Inc. Apparatus for nonwoven fibrous web
US20050136781A1 (en) * 2003-12-22 2005-06-23 Lassig John J. Apparatus and method for nonwoven fibrous web
US20050142339A1 (en) * 2003-12-30 2005-06-30 Price Cindy L. Reinforced elastic laminate
US8043984B2 (en) 2003-12-31 2011-10-25 Kimberly-Clark Worldwide, Inc. Single sided stretch bonded laminates, and methods of making same
US7601657B2 (en) 2003-12-31 2009-10-13 Kimberly-Clark Worldwide, Inc. Single sided stretch bonded laminates, and methods of making same
US9464369B2 (en) 2004-04-19 2016-10-11 The Procter & Gamble Company Articles containing nanofibers for use as barriers
US9663883B2 (en) 2004-04-19 2017-05-30 The Procter & Gamble Company Methods of producing fibers, nonwovens and articles containing nanofibers from broad molecular weight distribution polymers
US20060014460A1 (en) * 2004-04-19 2006-01-19 Alexander Isele Olaf E Articles containing nanofibers for use as barriers
US20080122143A1 (en) * 2006-11-28 2008-05-29 Herman Peter K Apparatus, system, and method for maximizing ultrafine meltblown fiber attenuation
US7798434B2 (en) 2006-12-13 2010-09-21 Nordson Corporation Multi-plate nozzle and method for dispensing random pattern of adhesive filaments
US20080145530A1 (en) * 2006-12-13 2008-06-19 Nordson Corporation Multi-plate nozzle and method for dispensing random pattern of adhesive filaments
US8074902B2 (en) 2008-04-14 2011-12-13 Nordson Corporation Nozzle and method for dispensing random pattern of adhesive filaments
US8435600B2 (en) 2008-04-14 2013-05-07 Nordson Corporation Method for dispensing random pattern of adhesive filaments
US20110244066A1 (en) * 2008-11-13 2011-10-06 Oerlikon Textile Gmbh & Co. Kg Apparatus for producing a spunbonded fabric
US8496459B2 (en) * 2008-11-13 2013-07-30 Oerlikon Textile Gmbh & Co. Kg Apparatus for producing a spunbonded fabric

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