US3525160A - Process and arrangement for drainage of wet leather and similar fibrous material - Google Patents

Process and arrangement for drainage of wet leather and similar fibrous material Download PDF

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Publication number
US3525160A
US3525160A US728372A US3525160DA US3525160A US 3525160 A US3525160 A US 3525160A US 728372 A US728372 A US 728372A US 3525160D A US3525160D A US 3525160DA US 3525160 A US3525160 A US 3525160A
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Prior art keywords
moisture
leather
conveyor
bands
band
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US728372A
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English (en)
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Jiri Dokoupil
Jiri Zubik
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    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/26—Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B2700/00—Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
    • C14B2700/07—Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards; Fastening devices; Drying of leather

Definitions

  • PROCESS AND ARRANGEMENT FOR DRAINAGE OF WET LEATHER AND SIMILAR FIBROUS MATERIAL Filed May 10, 1968 United States Patent Office PROCESS AND ARRANGEMENT FOR DRAINAGE OF WET LEATHER AND SIMILAR FIBROUS MATERIAL Jifi Dokoupil, 38 Opavska, and Jiii Zubik, 16 Hlavni namesti, both of Krnov, Czechoslovakia Filed May 10, 1968, Ser. No. 728,372 Claims priority, application Czechoslovakia, May 12, 1967, 3,437/ 67 Int. Cl. F26b 3/00 US. Cl.
  • Water from wet hides and similar fibrous material is in the cause of leather treatment generally removed by introducing the hides between two rollers, rotating in the opposite direction, which theoretically are with the hide in contact along a line and which squeeze the moisture out of the hide by pressure.
  • they In order to improve the efiiciency of said rollers, they have been provided with a felt lining, which sucked on the surplus moisture.
  • a roller provided with knives has been generally provided in front of the couple of rollers to straighteen the hide and to prevent bent parts of the hide enter between both rollers. In operation such devices are rather inefiicient, as they operate discontinuously and cannot form a part of a continuous production line.
  • the removal of water from such a continuously moving conveyor band at or near the place where pressure is applied is easy as long as the moisture contained in the conveyor band is retained there predominantly by surface tension and not by capillary action.
  • This moisture can be in such a case removed by the application of suction, by passage of an air stream through the conveyor band or by mechanical action preferably by vibration.
  • the conveyor band has to be made of material showing resiliency at least in a direction perpendicular to the surface of the conveyor band in order to be able of adjustment to leather of different thickness and to return to its original shape after release of applied pressure, it must be furthermore pervious to air to such a degree, to enable the moisture contained therein to be removed by suction, by passage of an air stream or by mechanical action.
  • the conveyor band must form channels where moisture is retained by surface tension, and from which it can be easily removed. Material, which corresponds to these conditions, is for example fabric woven from artificial material, for instance polyamide traded under the name of Lycra.
  • FIG. 1 represents in elevation an embodiment in which steady pressure is applied on the conveyor band by means of skids with a subsequent sucking of the moisture from the conveyor bands.
  • FIG. 2 shows in top view and cross section a part of a conveyor band composed of fibres indicating the retaining of moisture therein;
  • FIG. 3 which is a continuation of FIG. 1 shows the application of pressure means performing a reciprocating movement and removal of water either by passage of an air stream or by transmitting to the convey-or band reciprocating movements.
  • FIG. 4 shows finally in elevation an arrangement in which the leather with the conveyor bands is bent around an edge.
  • the leather 1 is introduced between two conveyor bands 2, 3, of an elastic and gas pervious fabric made of synthetic fibres, which fabric is resilient at least in a direction perpendicular to the band surface. It could be also made of rubber with a sufficient number of interstices capable of accepting and retaining moisture in these interstices by surface tension. Generally any material should be suitable which shows the above described resiliency perpendicularly to the band surface and the resistance to passage of air in a direction perpendicular to the band surface below 1000 mm. of water column per square decimeter of surface.
  • the conveyor bands are guided by guiding, driving and 3 tensioning rollers 15. Not far from the entrance of the leather 1 between the conveyor bands 2, 3 are pressure means which can be rollers for instance.
  • skids 13 are shown, on which pressure is applied either permanently as indicated by arrows 5 or intermittently as indicated by arrows 12 in FIG. 3, where the skids 13 also have an undulating surface.
  • the water is removed from the conveyor bands in FIG. 1 by a suction nozzle 8.
  • FIG. 2 shows an example of a fabric indicating how drops of water 6 are retained in the interstices between adjacent fibres 4, which form the fabric of the conveyor bands. It is obvious that the moisture is here retained by surface tension of the water.
  • FIG. 4 shows another embodiment of the invention in which the leather 1 together with both conveyor bands 2, 3 is guided over the edge of a bar 14 forming a bend, where the major part of moisture from the leather 1 is transferred to the conveyor bands 2, 3 and is subsequently sucked off by the suction nozzle 8.
  • the pressure means 13 are represented by reciprocating elements provided with a number of extensions, which transmit pressure to the leather way of the conveyor bands 2, 3 whereby said pressure, elements are contained in housings, where underpressure is maintained, so that moisture transferred to the conveyor bands 2, 3 is immediately sucked off from said bands.
  • the use of reciprocating pressure elements has the advantage of enabling an easy forward movement of the conveyor bands.
  • the use of reciprocating pressure elements enables also a better equalizing of possible bends or wrinkles of the leather.
  • the above described treatment of leather can be of course repeated if required.
  • the arrangement according to this invention enables thus a continuous and efficient draining of leather and may form a part of a continuous production line.
  • a method for continuously draining liquid treated leather or similar fibrous materials comprising the steps of conveying said leather between a pair of opposed pervious conveyor bands capable of retaining moisture, applying intermittent pressure to said moving bands, to transfer the moisture from said leather to said bands and thereafter removing the moisture accumulated within said bands.
  • Apparatus for the drainage of liquid treated leather comprising a pair of opposed air pervious absorbent conveyor belts adapted to receive and convey said leather therebetween and retain moisture thereon by surface tension, means for applying pressure to at least one of said belts during movement thereof to transfer moisture from said belts and means for removing said transferred moisture from said belts.
  • the apparatus according to claim 4 including means for intermittently and repetitively applying pressure to said bands.
  • the apparatus according to claim 5 including a housing surrounding said pressure application means and a source of suction to provide a vacuum within said housing during the application of said means.
  • the apparatus according to claim 6 including a skid located in contact with the outer surface of said band and means for reciprocating said skid in a direction perpendicular to the movement of said band.
  • the apparatus according to claim 4 including jet suction means for sucking said moisture from the surface thereof.
  • the apparatus according to claim 4 including a series of rollers for moving said bands, said rollers being arranged so as to bend said conveyor bands to remove the moisture therefrom.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
US728372A 1967-05-12 1968-05-10 Process and arrangement for drainage of wet leather and similar fibrous material Expired - Lifetime US3525160A (en)

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CS343767 1967-05-12

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US3525160A true US3525160A (en) 1970-08-25

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US (1) US3525160A (es)
DE (1) DE1760381B2 (es)
ES (1) ES353871A1 (es)
FR (1) FR1587881A (es)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973329A (en) * 1973-11-07 1976-08-10 Hoechst Aktiengesellschaft Process and device for drying synthetic fibrous material
US4112586A (en) * 1975-12-30 1978-09-12 Oy. Tampella Ab Method of drying a cardboard or a paper web and drying device for applying this method
US4189849A (en) * 1977-10-11 1980-02-26 Staalkat B.V. Method and apparatus for drying a roller conveyor loaded with articles, such as eggs, and apparatus for washing, drying and candling eggs loaded on a roller conveyor
US4719707A (en) * 1985-06-19 1988-01-19 Jagenberg Aktiengesellschaft Conveying apparatus for a flat article, particularly a cardboard blank, paper sheets or signatures or the like
US5079853A (en) * 1989-10-19 1992-01-14 Fuji Photo Film Co., Ltd. Photosensitive material drying apparatus
US5291666A (en) * 1993-04-23 1994-03-08 International Paper Company Apparatus for drying roll material
US5566472A (en) * 1993-02-01 1996-10-22 Valmet-Tampella Oy Seal for use at band edges in a drying space of a drying apparatus
US20100224574A1 (en) * 2009-03-09 2010-09-09 Youngs Ross O Method and apparatus for separating particles from a liquid

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL182701C (nl) * 1975-06-10 1988-05-02 Bhs Bayerische Berg Inrichting voor het verminderen van de restvochtigheid van een materiaallaag.
DE2757257C3 (de) * 1977-12-22 1981-11-12 Louis Schweizer Gmbh & Co Kg Lederfabrik, 7157 Murrhardt Abwelkpresse für Leder, Pelze u.dgl.
SE432615B (sv) * 1981-10-12 1984-04-09 Geweniger Karl Otto Sett och maskinenhet for behandling av arbetsstycken bestaende av hudar, skinn, lederstycken eller dylikt
FI68656C (fi) * 1984-01-25 1985-10-10 Leena Viljanmaa Foerfarande och anordning foer spaenning av hudar

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207278A (en) * 1937-09-22 1940-07-09 Joseph A Albrecht Machine for removing surface moisture from lump material
US3283415A (en) * 1964-04-14 1966-11-08 Auxilius P Schnyder Paper drying apparatus
US3347740A (en) * 1963-10-14 1967-10-17 Rice Barton Corp Method and apparatus for purging travelling felts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207278A (en) * 1937-09-22 1940-07-09 Joseph A Albrecht Machine for removing surface moisture from lump material
US3347740A (en) * 1963-10-14 1967-10-17 Rice Barton Corp Method and apparatus for purging travelling felts
US3283415A (en) * 1964-04-14 1966-11-08 Auxilius P Schnyder Paper drying apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973329A (en) * 1973-11-07 1976-08-10 Hoechst Aktiengesellschaft Process and device for drying synthetic fibrous material
US4112586A (en) * 1975-12-30 1978-09-12 Oy. Tampella Ab Method of drying a cardboard or a paper web and drying device for applying this method
US4189849A (en) * 1977-10-11 1980-02-26 Staalkat B.V. Method and apparatus for drying a roller conveyor loaded with articles, such as eggs, and apparatus for washing, drying and candling eggs loaded on a roller conveyor
US4719707A (en) * 1985-06-19 1988-01-19 Jagenberg Aktiengesellschaft Conveying apparatus for a flat article, particularly a cardboard blank, paper sheets or signatures or the like
US5079853A (en) * 1989-10-19 1992-01-14 Fuji Photo Film Co., Ltd. Photosensitive material drying apparatus
US5566472A (en) * 1993-02-01 1996-10-22 Valmet-Tampella Oy Seal for use at band edges in a drying space of a drying apparatus
US5291666A (en) * 1993-04-23 1994-03-08 International Paper Company Apparatus for drying roll material
US20100224574A1 (en) * 2009-03-09 2010-09-09 Youngs Ross O Method and apparatus for separating particles from a liquid
US8092691B2 (en) 2009-03-09 2012-01-10 Univenture, Inc. Method and apparatus for separating particles from a liquid
US8286801B2 (en) 2009-03-09 2012-10-16 Univenture, Inc. Method and apparatus for separating particles from a liquid

Also Published As

Publication number Publication date
FR1587881A (es) 1970-04-03
ES353871A1 (es) 1970-02-01
DE1760381C3 (es) 1975-03-06
DE1760381B2 (de) 1974-07-11
DE1760381A1 (de) 1972-08-10

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