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Publication numberUS3268954 A
Publication typeGrant
Publication dateAug 30, 1966
Filing dateDec 9, 1963
Priority dateDec 9, 1963
Publication numberUS 3268954 A, US 3268954A, US-A-3268954, US3268954 A, US3268954A
InventorsCurt G Joa
Original AssigneeCurt G Joa
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method for disintegrating wood pulp board into its component fibers and reassembling the fibers as a soft bat
US 3268954 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Aug. 30, 1966 c. G. JoA 3,268,954

METHOD FOR DISINTEGRATING WOOD PULP BOARD INTO ITS" COMPONENT FIBERS AND REASSEMBLING THE FIBERS AS A SOFT BAT 2 Sheets-Sheet l Filed Dec. 9, 1963 INVENTOR der 6. dan

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HTTDP/VEYS Aug. 30, 1966 C. G. .10A 3,268,954

METHOD FOR DISINTEORATINO woon PULP BOARD INT0 1Ts- COMPONENT FIBERS AND REASSEMBLINO THE FIBERS As A SOFT BAT Filed Deo. 9, 1963 2 Sheets-sheet 2.

ZZ Z4 INVENTOR der dan A r rare/v V5 E54 MMT United States Patent METHOD FR DISINTEGRATING WOOD PULP BOARD INTO ITS CMPDNENT FIBERS AND REASSEMELING THE FEBERS AS A SOFT BAT Curt G. Ion, cean Ridge, Fla..

(Box 1121, Boynton Beach, Fla.)

Filed Dec. 9, 1963, Ser. No. 329,120 2 Ciaims. (Cl. 19--156.3)

This invention relates to a method for disintegrating wood pulp board into its component fibers and reassembling the fibers as a soft bat.

It has become conventional practice to ship Wood pulp in .the form of webs which have been compacted under calendering presure. The degree of hardness varies, so that the webs are not alike in density. In all such products, however, there is `a tendency for the fibers to be pulverized in the picking apparatus. I seek to retain the fizers at full length.

The invention contemplates passing the pulp web over a cylindrically rounded breaker plate, preferably in multiple plies, and picking the fiber from the sheeting by the action of pins projecting radially from `a picker drum which is rotated tangentially with respect to the rounded nose of the breaker plate to lbend the plies of pulp over the nose of the plate engaging the faces of the successive plies and movin-g toward the ends thereof to discharge the fibers therefrom with a minimum of breakage.

The pins have either staggered or random pattern on the drum so that there will be no grooving action on the pulp web. Their clearance from the Ibreaker bar is very slight. In addition, a series of small air jets are provided along the nose of the breaker bar to tend to support the pulp web and to urge it toward the pins, giving much the same effect as if the b-ar and pins had zero clearance. This `arrangement minimizes aking and also tends to assure that the individual fibers will be separated from the web with minimum breakage.

In furtherance of these objectives, a segmental backing cylinder is provided in the path of the material moving with the picking drum pins from the breaker bar. Each segment has pins projecting toward the drum in offset patterns with as little clearance as is practicable.

If buildup occurs on the pins -of the cylinder segments, the pins of the drum strip the accumulated material from the pins of the cylinder. The movement of the drum sets .up `a substantial vortex movement of air which `aids in carrying pulp fibers through a tangential outlet from the chamber in which the drum operates. The outlet passage leads to a screen belt spanning `a vacuum box and on which the liber is accumulated as a bat of substantially constant thickness.

By bending a plurality `of plies (three, in practice) over the rounded breaker plate, I get superior picking action because the difference in hardness of Vthe several plies enables over-hardness of one ply to offset over-softness of another, and vice versa with the result tha-t uniformity of operation is achieved and the upper plies receive yielding support from the lower plies. This seems to facilitate the separation of fiber from all Iof them, even including the lowermost.

In the drawings:

FIG. 1 is a diagrammatic view partially in side elevation and partially in transverse section through apparatus for the practice of the invention.

FIG. 2 is an enlarged detail view of a porti-on of the apparatus shown in FIG. l.

FIG, 3 is a fragmentary View partially in elevation and partially in section showing the breaker pl-ate and portions of the cylinder as they appear with the drum removed.

FIG. 4 is a fragmentary view in inverted plan from 3,253,954 Patented August 3G, i966 ICC the portion of the breaker plate to which air pressure is admitted.

FIG. 5 is an enlarged detail View in section diagrammatically showing how the individual pins -of the drum pene- 4trate the successive plies folded over the breaker plate.

The relatively hard calendered pulp web 10, preferably in multiple plies (three being shown by way of example) is delivered by paired feed rolls I2 .and I4 over `a breaker bar 16 to which the web is held securely by a clamping bar 18.

The breaker bar 16 extends transversely of the direction of web movement, which is from left to right as viewed in FIGS. 1, 2 and 5. The nose portion 2.0` of the breaker har is cylindrically rounded and is in very close proximity to the path of picking pins 22 which project from a picking drum 24 rotated at high speed by motor 25 to move the pins tangentially with respect to the rounded surface Ztl and in counterclockwise direction as viewed in FIGS. 1 and 2. The pins are offset in staggered pattern on the picke-r drum and are spaced at about a quarter of an inch from each other, on the average. Their points are within a few thousandths of an inch from the surface 2@ at the point of tangency. By way of example, and not by way of limitation, a clearance of 0.002-0.005 inch is desirable to obtain optimum picking lof the fiber.

I achieve even less clearance, in effect, by providing the bar 16 with a series of air vents directed toward the drum 24. Conveniently, this can be done by using a plate at 2.6 which has grooves 28 opening toward the drum and registering with a manifold channel 3@ which receives air from a pressure line 32. As best shown in FIG. 5, there is a tendency for the jets of air issuing from the grooves 28 to force toward the drum 24 the leading ends of the pulp web or webs 10. rIo the extent that these we-b ends are deflected toward the drum, the pins 22 of the picking drum extend completely through the plies thus, in effect, reducing the clearance to zero.

Coacting with the pins 22 of drum 24 `are stationary pins 34 preferably also offset in staggered pattern and mounted in cylinder segments 36 and 38. The average spacing of the lpins from each other may be approximately one-eighth inch, .as on the drum, and the clearance between the pins of the cylinder segments and those of `the drum may be approximately 0.010 inch or as close as is mechanically praticable.

The rotation of the drum 24 creates a substantial vortical movement of air Within the housing 4t] and the air thus set in motion tends to carry the pulp liber `through the tangential discharge opening 42 toward a screen belt 44 which is operated over a lower pulley 46 and an upper pulley 48. Behind the portion of the belt enclosed by the belt housing 50 is a vacuum chamber 52 having a suction outlet 54. The arrangement is such that a bat 6i) builds up on the belt 44 as best shown in FIG. 1. The fioating leveling rotors 53 rotate downwardly in opposition to the upward movement of bat on belt 44 and tend to level off ythe bat 60. Any displaced pulp falls toward the bottom of chamber 40 and is entrained in the air stream moving toward the vacuum box, being thereby re-engaged with belt 44. So far as the building up of the bat is concerned, it is somewhat comparable to that disclosed in Patent 3,086,253, issued April 23, 1963.

In the operation of the device, it is preferred that a plurality of separately fabricatedv webs or plies of pulp board are laminated or superimposed and fed concurrently into the apparatus. It is important that the successive pins 22 of the picker drum 24 engage the outer or originally upper surfaces of 4the ply or plies of pulp 10 as these are bent over the rounded nose 20 of the breaker plate 16. Thus, the picking action of the pins is always exerted parallel to the face of the plate toward the free end thereof instead of at right angles to the web. It is found that this contributes materially toward the preservation 4of maximum ber length. In addition, it is found that full length unbroken fibers are more readily obtained when a plurality of plies are fed concurrently over the nose of the breaker plate, than is the case if a single 'ply is fed thereover. Pneumatically urging the free ends of these plies toward the path of the picker drum pins is also a factor.

To minimize the aigglomeration of fibers by electro4 static action the air supplied through the pressure line 32 is preferably humidified heavily with Water or other liquid capable of reducing the electrostatic charge on the bers.

I claim:

1. A method of removing fibers from compacted wood pulp boards which individually have different degrees of hardness and density and reassembling the bers as a s-oft bat and comprising the steps of superimposing in laminated face relation a plurality of such boards so that the aggregate hardness and density of successive sets of such laminated boa-rds tends to be more uniform than successive individual boards, feeding the laminated boards toward a picking drum provided With pins, ro rating the drum and Ibending the laminated boards concurrently into substantial tangency with the movement of the pins so that a lower board yieldingly supports an upper board `and supports said boards in positions such that said pins progressively enter top surface portions of `the successive superimposed boards and move toward the ends of such boards to pick fibers therefrom, delivering such fibers to a bat forming screen and forming a soft bat from said bers on said screen.

2. A method according to claim 1 which further includes the step of pneumatically urging the free end portions Iof said superimposed boards into the path of said pins.

References Cited by the Examiner UNITED STATES PATENTS 8,371 9/1851 Sargent et al. 19-83 852,474 5/1907 Tyden 19-1455 1,216,790 2/1917 Faunce 19-80 2,086,592 7/1937 Williams 19-156.3 X 2,331,943 10/1943 Von Osten 19-83 X 3,086,253 4/1963 Joa 19-156 X FOREIGN PATENTS 14,317 1893 Great B-ritain.

5 MERVIN STEIN, Primary Examiner.

DONALD W. PARKER, Examiner.

D. NEWTON, Assistant Examiner.

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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3423796 *Jul 10, 1967Jan 28, 1969Mo Och Domsjoe AbDefibrator
US3475791 *May 8, 1967Nov 4, 1969Johnson & JohnsonMethod for separating,conveying and collecting woodpulp fibers as a uniform layer and apparatus for carrying out the same
US3494001 *Mar 6, 1967Feb 10, 1970Kimberly Clark CoApparatus and method for making sanitary napkins
US3538551 *May 15, 1968Nov 10, 1970Joa Curt GDisc type fiberizer
US3863296 *Jun 22, 1973Feb 4, 1975Procter & GambleProcess for preparing airfelt
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US4064599 *Jun 13, 1975Dec 27, 1977Scott Paper CompanyFiberizing method and apparatus employing differential feed system
US4089086 *Dec 1, 1975May 16, 1978E. I. Du Pont De Nemours And CompanyAir lay-down process for producing uniform lightweight webs from textile fibers
US4118832 *Sep 13, 1976Oct 10, 1978Scott Paper CompanyMethod for minimizing the accumulation of static charges on fibers resulting from fiberization of pulp lap sheets
US4701294 *Jan 13, 1986Oct 20, 1987Kimberly-Clark CorporationEductor airforming apparatus
US4904439 *Jul 18, 1988Feb 27, 1990Johnson & JohnsonMethod of making a non-woven fiber web using a multi-headed ductless webber
US5007137 *Jan 4, 1990Apr 16, 1991Hergeth Hollingsworth GmbhCarding apparatus
US6748671Oct 30, 2001Jun 15, 2004Weyerhaeuser CompanyProcess to produce dried singulated cellulose pulp fibers
US6769199Jun 28, 2002Aug 3, 2004Weyerhaeuser CompanyProcess for producing dried singulated cellulose pulp fibers using a jet drier and injected steam and the product resulting therefrom
US6782637Jan 16, 2002Aug 31, 2004Weyerhaeuser CompanySystem for making dried singulated crosslinked cellulose pulp fibers
US6862819Jun 28, 2002Mar 8, 2005Weyerhaeuser CompanySystem for producing dried singulated cellulose pulp fibers using a jet drier and injected steam
US6865822May 7, 2002Mar 15, 2005Weyerhaeuser CompanyDrying system for producing dried singulated cellulose pulp fibers
US6910285Dec 17, 2003Jun 28, 2005Weyerhaeuser CompanyProcess to produce dried singulated cellulose pulp fibers
US7018508Jan 16, 2002Mar 28, 2006Weyerhaeuser CompanyProcess for producing dried singulated crosslinked cellulose pulp fibers
US7290353Jun 2, 2004Nov 6, 2007Weyerhaeuser CompanySystem for making dried singulated crosslinked cellulose pulp fibers
US7303708Apr 8, 2005Dec 4, 2007Curt G. Joa, Inc.Super absorbent distribution system design for homogeneous distribution throughout an absorbent core
US7334347Aug 20, 2004Feb 26, 2008Weyerhaeuser CompanyProcess for producing dried, singulated fibers using steam and heated air
US7374627Apr 7, 2005May 20, 2008Curt G. Joa, Inc.Method of producing an ultrasonically bonded lap seam
US7398870Oct 5, 2005Jul 15, 2008Curt G. Joa, IncArticle transfer and placement apparatus
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US7708849Jan 4, 2006May 4, 2010Curt G. Joa, Inc.Apparatus and method for cutting elastic strands between layers of carrier webs
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US8182624Mar 11, 2009May 22, 2012Curt G. Joa, Inc.Registered stretch laminate and methods for forming a registered stretch laminate
US8293056Aug 24, 2010Oct 23, 2012Curt G. Joa, Inc.Trim removal system
US8398793Jul 20, 2007Mar 19, 2013Curt G. Joa, Inc.Apparatus and method for minimizing waste and improving quality and production in web processing operations
US8417374Apr 26, 2010Apr 9, 2013Curt G. Joa, Inc.Method and apparatus for changing speed or direction of an article
US8460495Dec 27, 2010Jun 11, 2013Curt G. Joa, Inc.Method for producing absorbent article with stretch film side panel and application of intermittent discrete components of an absorbent article
US8557077Mar 21, 2011Oct 15, 2013Curt G. Joa, Inc.Method of producing a pants-type diaper
US8656817Mar 7, 2012Feb 25, 2014Curt G. JoaMulti-profile die cutting assembly
US8663411Jun 6, 2011Mar 4, 2014Curt G. Joa, Inc.Apparatus and method for forming a pant-type diaper with refastenable side seams
US8673098Oct 25, 2010Mar 18, 2014Curt G. Joa, Inc.Method and apparatus for stretching segmented stretchable film and application of the segmented film to a moving web
US8794115Jul 7, 2011Aug 5, 2014Curt G. Joa, Inc.Single transfer insert placement method and apparatus
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Classifications
U.S. Classification264/518, 19/306, 264/116
International ClassificationB27N3/10, D21D1/32, D04H1/02, D21B1/06, D01G23/00, D01G9/06, D01G7/04
Cooperative ClassificationD21H11/14, B27N3/10, D21H5/2614
European ClassificationD21H11/14, B27N3/10, D21H5/26B2