US3910077A - Device for wet-processing leather or hides - Google Patents

Device for wet-processing leather or hides Download PDF

Info

Publication number
US3910077A
US3910077A US406653A US40665373A US3910077A US 3910077 A US3910077 A US 3910077A US 406653 A US406653 A US 406653A US 40665373 A US40665373 A US 40665373A US 3910077 A US3910077 A US 3910077A
Authority
US
United States
Prior art keywords
rollers
series
roller
disposed
pinch
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.)
Expired - Lifetime
Application number
US406653A
Other languages
English (en)
Inventor
Hans Kessler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3910077A publication Critical patent/US3910077A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather
    • 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
    • C14B1/30—Pressing or rolling leather
    • 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
    • C14B2700/12—Pressing or rolling leather

Definitions

  • ABSTRACT A device for wet-processing leather and hides in which the materials to be treated are soaked in a treatment liquid and passed between pinch rollers that are loaded into contact with one another.
  • the device has a plurality of pairs of pinch rollers arranged virtually in contact with one another and formed by two roller series which receive the material directly therebetween for treatment.
  • rollers of one series are fixedly positioned by bearings while means are provided for driving the last mentioned series of rollers while the other series are loaded into contact with these rollers and in such a manner that the load may be individually adjusted.
  • the rollers are disposed in a horizontal plane and positioned within a bath containing the treatment liquid.
  • the rollers are disposed in a vertical one above the other arrangement and nozzles are positioned adjacent each pair of rollers to spray the material with the treatment liquid.
  • the present invention relates to a device for wetprocessing leather and hides.
  • liquids or solutions required in these treatments are in each case matched in terms of chemical composition and concentration to the result which is to be achieved and to the material being handled.
  • This method compared with the aforesaid known methods, possesses the advantage that on introduction of the leather or hide into the bath, multiple impregnation with the treatment liquid takes place.
  • the liquid On passage through the first pair of pinch rollers, the liquid is squeezed out of the material and when the rollers release it, the material expands and soaks up liquid again.
  • the liquid is squeezed out again so that the sponge-like effect of squeezing out and soaking in is repeated in accordance with the number of successive pairs of pinch rollers provided.
  • This repeated sponge effect is advantageous insofar as a thorough, satisfactory treatment is carried out, without impairing the material, whilst shortening the treatment time.
  • a device for carrying out this known process consists of an elongated bath which receives the treatment liquid, in which upper and lower, driven screen-like conveyor belts are arranged.
  • the top run of the bottom conveyor belt and the bottom run of the top conveyor belt are passed between the pairs of pinch rollers which are arranged at an interval one after the other.
  • These rollers likewise, have to be equipped with a drive mechanism.
  • the hide or leather which is to be treated is introduced at the entry end of the bath between the two conveyor belts and drawn by them through the liquid bath.
  • each pair of pinch rollers located in the liquid bath squeezes out the liquid absorbed by the material so that on its way to the next pair of pinch rollers, the material can be fully soaked with the liquid again.
  • the object of the invention is to design this known device so that it can be employed universally for all materials which occur and all the requisite kinds of processing in an equally satisfactory manner in every case, and so that it is distinguished by simplicity of construction, simplicity of assembly and reliability of operation.
  • the inventive device is of a short length which requires only a small installation space.
  • the treatment may be carried out in a liquid bath or the treatment liquid may be applied to the material in dosage form by means of nozzles located between the rollers.
  • this object is achieved in that the individual pairs of pinch rollers are arranged so that they virtually touch one another and form two straight series of rollers receiving the material for treatment directly between them.
  • the rollers in one series are fixed in position in their bearings and are provided with a drive mechanism, while the rollers in the other series are loaded into contact with the rollers of the first series with the pressure of each roller being individually adjustable. Because the pairs of pinch rollers are arranged virtually in contact with one another, the device has an optimally short installed length and therefore an optimally short treatment path so that even sensitive material can be treated at a uniform transfer speed.
  • the provision of transfer belts is no longer necessary because the pairs of pinch rollers are arranged closely adjacent one another so that the material leaving one pair is fed on to the next.
  • the transfer speed can also be modified as a function of the particular material being treated.
  • the invention is characterised in that the series of rollers are disposed horizontally in the bath which receives the treatment liquid, the bottom series of rollers being positionally fixed in their bearings, and equipped with a drive mechanism. In between the rollers of the bottom series, support rollers of smaller diameter are arranged. In this embodiment, the rollers of the bottom series are equipped with a drive mechanism.
  • the support rollers of smaller diameter are arranged between the individual rollers of the bottom series. The support rollers are arranged at a short interval from the central plane of the pairs of pinch rollers to ensure that the material is reliably transferred from one roller to the next of the bottom series.
  • the invention is characterised, in a modified embodiment, in that the series of rollers are disposed vertically. In between the rollers of each series, nozzles are directed into the exit nip of each roller pair and serve to apply the treatment liquid to the material being treated. in this embodiment, the liquid bath is dispensed with, and this constitutes an advantage insofar as the treatment liquid need not be provided in surplus quantity. Instead, the treatment liquid is sprayed by the nozzle directly and in precisely metered quantities onto the material at the exit side of the nip of each individual pinch roller pair. Thus, the material compressed by the pinch rollers can soak up the sprayed-on treatment liquid directly on relaxing after leaving the nip. The ensuing pair of pinch rollers can force any fraction of the treatment liquid which has not entered the material into the material at the entry side of the nip, and immediately thereafter fresh treatment liquid can be sprayed on at the exit side of the nip.
  • a further advantage of the present invention resides in the fact that, in succession, different concentrations of one and the same treatment liquid can be applied to the material. Also, during transit of the material through the device, different chemicals can be applied in succession to the material being treated in the manner frequently required in tanning so that the modified embodiment of the device is particularly suitable for this application.
  • a further advantage of the present invention resides in the fact that different pinch pressures can be produced by different adjustments of the load elements acting upon the non-driven series of rollers. It is therefore possible to select different lengths of treatment bath by arranging that not all the nozzles are supplied with the treatment liquid. Instead only a number of nozzles are supplied corresponding to the particular desired treatment path length.
  • This embodiment is also advantageous to the extent that whilst maintaining the inherent possibilities of variation which it offers, it makes it possible, without employing a surplus amount of treatment liquid, to apply a precisely metered treatment liquid spray consisting of one or of different liquids to accord with the particular phases of operation. It is also possible to simultaneously spray both sides of the material being treated or to apply the treatment liquid only to one or the other side, the nozzles associated with that side of the material which is not to be sprayed being maintained closed. It i is also possible to treat both sides of the material in dicenter.
  • the invention is furthermore characterised in that the support rollers are exchangeably mounted and equipped with beads or grooves, spikes or brushes extending spirally outwards from the center.
  • the exchangeable support rollers with their beads or grooves extending spirally outwards from the center to either end, serve to tension the material as it transfers from one pair of pinch rollers to the next, and thus keep it smooth.
  • the support rollers are equipped with comb-like spikes or brushes which also extend spirally outward to either side from the center.
  • the same effect is achieved by means of the exchangeable rollers of the non-driven series.
  • the device in accordance with the invention thanks to the facility for adjustment of different treatment bath lengths to different treatment times, i.e. different transfer speeds, and to different pinch pressures, can be adapted to any material requiring processing and used with optimum effect for each individual treatment 0peration. If, for example, a hide is to be washed, then rect succession by this spray application. In this case,
  • the first device being used to spray one side of considering the embodiment with horizontal roller series, it is introduced with the hair side towards the support rollers.
  • the projections provided on the support rollers and on the rollers of the exchangeable series i.e. projections such as spikes, combs or brushes, penetrate into the hair and reinforce the cleansing of the hair side which is produced by the successive pinching operations, thus ensuring proper cleaning.
  • a tanned fur is to be degreased, then it is introduced into the particular device in a reversed attitude, so that substantially the leather side of the hide is brought into contact with the treatment liquid by the support rollers or the rollers ofthe non-driven series, so that proper degreasing is ensured.
  • other treatment operations using another treatment liquid, can be carried out.
  • leather can be degreased, tanned, dyed, etcetera.
  • FIG. 1 illustrates a side elevational view of a device having horizontally disposed roller series
  • FIG. 2 illustrates a modified embodiment of the invention with vertically disposed roller series
  • FlG.-3 is an enlarged fragmentary view of the device illustrated in FlG. 2.
  • FIG. 1 wherein a plurality of pinch roller pairs 3, 4-, 5, 6, 7 are shown as being arranged horizontally and closely adjacent one another and within a bath 1.
  • Each pinch roller pair 3 to 7 comprises a bottom roller 14 and a top roller 15.
  • the bottom rollers 14 of the pinch roller pairs are equipped with a drive mechanism which has not been shown, while each top roller 15 of the pinch roller pairs is loaded, by a variable force produced by a spring 6, into contact with its associated roller 14.
  • the bath 1 is filled to a level 7 with a treatment liquid so that the pairs of pinch rollers 3, 4, 5, 6 dip into the liquid, while the last pair 7 of pinch rollers, has a portion of its bottom roller 14 located above the liquid bath, in order to squeeze out the liquid from the treated material.
  • the material for treatment is supplied to the bath 1 from the left (as viewed in FlG. 1), over a guide plate 9 and enters between the first pair 3 of pinch rollers. Between the individual pinch roller pairs, support rollers 8 of smaller diameter are arranged and are likewise driven through a suitable transmission such as the drive mechanism which drives the rollers 14.
  • FIG. 2 illustrates a modified embodiment in which the pinch roller pairs 3, 4, 5, 6 are located vertically one below the other.
  • the left-hand roller series 14 is positionally fixed in its bearings, and provided with a suitable drive mechanism which has not been shown, while the rollers of the right-hand series are individually held into contact with the rollers 14, by the load produced by springs 6.
  • the material 14' being treated is supplied to the top pinch roller pair 3 over the guide plate 12 and after leaving the bottom pinch roller pair 6 is taken by a conveyor 11 for further processing.
  • spray nozzles 13 are arranged which spray the treatment liquid into the exit nips of the individual roller pairs 3, 4 and 5.
  • the treatment liquid is sprayed onto the material 14 atthe point of exit from the rollers 14 and 115, and in fact onto both sides of the material.
  • the material 14 is relaxing immediately after leaving the nip of the roller pairs 3, 4 and 5 so that the liquid sprayed on by the nozzles 13 is soaked up.
  • This spraying operation is repeated with each pinch roller pair with the exception of the bottom-most one 6.
  • the spray nozzle 13 can simultaneously spray both sides of the material 14' being treated. However, it is equally possible to spray only one or the other of the sides, by arranging that the noz zles l3 directed onto the side which is not to be sprayed, are kept closed. If both sides of the material are to be successively sprayed, two devices in accordance with the FlG.
  • the second device possibly being arranged directly below the first device so that the material 14 is guided through the two devices in one direction.
  • the second device can also be arranged beside the first, in which case the pairs of pinch rollers of the second device will conveniently be operated in the opposite direction'of rotation, and the spray nozzles 13 arranged above the pinch roller pairs so that the material leaving the first device, passes through the second device in the opposite direction.
  • a device for wet-processing leather and hides in which the materials to be treated are soaked in a treatment liquid and passed between pairs of pinch rollers loaded into contact with one another, said device comprising a plurality of individual pairs of pinch rollers arranged virtually in contact with one another and formed by two roller series which receive said material being treated directly thereinbetween; the rollers of one series being positionally fixed in bearings, said rollers of said one series being disposed in a side by side relationship such that said rollers almost touch each other in said side by side relationship, said rollers of said one series being rotatable about axes which are disposed in substantially the same plane;
  • roller series means for driving said one series of rollers, the other series of rollers being loaded into contact with the rollers of said first series of rollers, said other series of rollers being disposed in a side by side relationship such that said other series of rollers almost touch each other, said other series of rollers being rotatable about axes which are disposed in substantially the same plane, the load of each individual roller being separately adjustable; said roller series being arranged vertically with the roller axes of the roller series being parallel to a single vertical plane and with the axes of each pair of rollers being disposed in the same horizontal plane;
  • pairs of rollers having a downward feeding pinch
  • nozzles disposed between the rollers of each series and directed into the exit gaps of each roller pair for applying said treatment liquid to the material being treated.
  • rollers of the non-driven series are exchangeably mounted and selectively provided with a smooth surface, coverings of different hardnesses and absorptivities.
  • rollers of the non-driven series are exchangeably mounted and selectively provided with a smooth surface, linings of different hardnesses and absorptivities.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
US406653A 1973-05-25 1973-10-15 Device for wet-processing leather or hides Expired - Lifetime US3910077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2327445A DE2327445A1 (de) 1973-05-25 1973-05-25 Vorrichtung zur nassbehandlung von leder oder fellen

Publications (1)

Publication Number Publication Date
US3910077A true US3910077A (en) 1975-10-07

Family

ID=5882514

Family Applications (1)

Application Number Title Priority Date Filing Date
US406653A Expired - Lifetime US3910077A (en) 1973-05-25 1973-10-15 Device for wet-processing leather or hides

Country Status (8)

Country Link
US (1) US3910077A (cs)
BE (1) BE805831A (cs)
CH (1) CH579631A5 (cs)
DE (1) DE2327445A1 (cs)
FR (1) FR2230728B3 (cs)
GB (1) GB1432852A (cs)
IT (1) IT996239B (cs)
NL (1) NL7312974A (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267714A (en) * 1977-09-15 1981-05-19 S.P.A. Luigi Rizzi & C. Hydraulic device for producing a to-and-fro movement
US20230019709A1 (en) * 2019-12-20 2023-01-19 Rotacoat S.R.L. Roller leather finishing machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538703A1 (de) * 1975-08-30 1977-03-03 Dokoupil Jiri Vorrichtung zur entwaesserung von leder
GB2084203B (en) * 1980-09-22 1984-04-11 Moffitt Co Roy M Skin washer
DE3930965A1 (de) * 1989-09-15 1991-03-28 Dynavac Gmbh Einrichtung zur dampfbehandlung von leder und dergl.
IT1243161B (it) * 1990-11-09 1994-05-24 Cartigliano Off Spa Macchina tamponatrice a rulli per l'impregnazione superficiale di pelli e prodotti similari

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US50998A (en) * 1865-11-21 Improvement in tanning
US1193927A (en) * 1916-08-08 Leather
US1731564A (en) * 1923-06-18 1929-10-15 Leather Makers Process Company Leather-washing machine
US2117491A (en) * 1937-01-09 1938-05-17 Hampton Company Method of dampening fabrics
US3457740A (en) * 1967-12-19 1969-07-29 Gerber & Co Gmbh Continuous washing machine
US3606772A (en) * 1968-12-11 1971-09-21 Sando Iron Works Co Apparatus for treating cloth

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US50998A (en) * 1865-11-21 Improvement in tanning
US1193927A (en) * 1916-08-08 Leather
US1731564A (en) * 1923-06-18 1929-10-15 Leather Makers Process Company Leather-washing machine
US2117491A (en) * 1937-01-09 1938-05-17 Hampton Company Method of dampening fabrics
US3457740A (en) * 1967-12-19 1969-07-29 Gerber & Co Gmbh Continuous washing machine
US3606772A (en) * 1968-12-11 1971-09-21 Sando Iron Works Co Apparatus for treating cloth

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267714A (en) * 1977-09-15 1981-05-19 S.P.A. Luigi Rizzi & C. Hydraulic device for producing a to-and-fro movement
US20230019709A1 (en) * 2019-12-20 2023-01-19 Rotacoat S.R.L. Roller leather finishing machine
US11925955B2 (en) * 2019-12-20 2024-03-12 Rotacoat S.R.L. Roller leather finishing machine

Also Published As

Publication number Publication date
DE2327445A1 (de) 1974-12-12
NL7312974A (cs) 1974-11-27
FR2230728A1 (cs) 1974-12-20
CH579631A5 (cs) 1976-09-15
FR2230728B3 (cs) 1976-08-27
GB1432852A (en) 1976-04-22
IT996239B (it) 1975-12-10
BE805831A (fr) 1974-02-01

Similar Documents

Publication Publication Date Title
US3961108A (en) Method for treating surfaces of wood panels
US3910077A (en) Device for wet-processing leather or hides
GB945421A (en) Improvements relating to the dyeing and similar liquid treatment of textiles and similar materials
US3314256A (en) Dyeing and similar liquid treatment of textile materials
DE1785141A1 (de) Verfahren zum Strangfaerben oder -waschen sowie Trocknen von Warenbahnen
US4763370A (en) Apparatus and method for dyeing sheet articles
US3762190A (en) Apparatus for treating hide and leather pieces in tanneries
US3902338A (en) Device for wet-processing leather and hides
US2964825A (en) Textile treating apparatus
WO1989012698A1 (en) Treatment of skins and hides
US2342266A (en) Open-width washer
US3875769A (en) Automatic steeping apparatus for fabric
US4280345A (en) Apparatus for cleansing cattle hides
US3039429A (en) Swabbing device for treating leather
US4875942A (en) Method of cleaning residual dye material from rollers of a textile fabric drying oven
US4263008A (en) Method and apparatus for continuously carrying out weight reduction and mercerization of cloth material
GB959200A (en) Improvements relating to the laundering of textile articles
US3457740A (en) Continuous washing machine
SU150569A1 (ru) Машина дл непрерывной обработки кожи, например, аппретурой
GB1076234A (en) Improvements in or relating to method and apparatus for dyeing individual textile strands
US693561A (en) Leather-coloring machine.
US4202664A (en) Method for cleansing cattle hides and apparatus for realizing same
GB770670A (en) A method of and means for felting, shrinking and if desired otherwise treating felt and other fabric materials
US3412584A (en) Pelt painting device
GB1387972A (en) Textile treatment apparatus