EP0501565A1 - Verfahren zum Pressen, Entfeuchten und Konditionieren von durchtränkten Häuten sowie im Durchlaufverfahren arbeitende Maschine zur Durchführung dieses Verfahrens - Google Patents

Verfahren zum Pressen, Entfeuchten und Konditionieren von durchtränkten Häuten sowie im Durchlaufverfahren arbeitende Maschine zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP0501565A1
EP0501565A1 EP92200463A EP92200463A EP0501565A1 EP 0501565 A1 EP0501565 A1 EP 0501565A1 EP 92200463 A EP92200463 A EP 92200463A EP 92200463 A EP92200463 A EP 92200463A EP 0501565 A1 EP0501565 A1 EP 0501565A1
Authority
EP
European Patent Office
Prior art keywords
drum
machine
skin
felt
carpet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92200463A
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English (en)
French (fr)
Inventor
Giampietro Verza
Luigi Boschetti
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.)
Fbp Planning Srl
Original Assignee
Fbp Planning Srl
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 Fbp Planning Srl filed Critical Fbp Planning Srl
Publication of EP0501565A1 publication Critical patent/EP0501565A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
    • 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
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/58—Drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts

Definitions

  • the subject of the present invention is a process by which soggy skins which come out of barrels or of continuously operating machines suitable for tanning or dyeing, are dehumidified until the humidity is brought to an acceptable level suitable for allowing their passage subsequent to subsequent treatments.
  • tanned hides To be able to be subjected to subsequent treatments, tanned hides must be brought, using pressing operations, to a relative humidity of around 40 to 50% by weight, while dyed hides, to be susceptible to undergo subsequent treatments, must be brought to a homogeneous relative humidity, of the order of 15 to 20%, and this by means of pressing, dehumidification and conditioning operations.
  • the dehumidification operation is carried out in different ways.
  • one of the most commonly used processes consists in gripping the skins after pressing them, in spreading them manually using appropriate spatulas on heated panels, possibly under vacuum, until bringing said skins skins at a moisture level relative to the order of 25 to 30%, and to hang them on an aerial chain or inside hot air ovens, until obtaining the final relative humidity which allows, as far as one has realized homogeneity over the entire surface of the skin, moving on to subsequent treatments.
  • the skins should be rehumidified using appropriate tanks provided with water jets, these skins being thus left in a stacked state, until '' to obtain sufficient homogeneity.
  • the method according to the invention replaces this current series of operations with a single operation which makes it possible to drastically reduce the space occupied, the time, the manpower and the energy used, being further noted. that operators no longer come in contact with moisture, steam or heat.
  • the invention also relates to the machine for implementing the above-mentioned method, which machine will be described below according to various possible embodiments, all of which fall within the field of patent.
  • the drying machine comprises a first cold pressing operation with felt carpets and then with a canvas or equivalent carpet, which advances at a determined speed, at the same time as a flexible flexible steel carpet or an equivalent steel drum, itself heated and moving at the same speed as the carpet in you in order to transfer the skins which are introduced between the two carpets or between the carpet and the drum in order to bring them at the end of the drying operation until the subsequent treatment, the absorption of humidity being ensured by means of a series of felts or using a unique felt rug.
  • the series of felt mats or the equivalent equivalent felt ensures the compression among the rollers of the skins which advance between the two parallel mats or between the transfer mat and the cylinder, which promotes the transfer of the vapor and operates the progressive dehumidification of the skin.
  • an endless conveyor belt 1 preferably made of a synthetic material and set in motion by a motor 2 (fig. 2), by means of which the skin which is spread manually by the direction of the arrow 3 is pr the enlarged sequence automatically introduced between the pressing rollers 4, 5 and 6, 7 which constitute a device similar to that normally called a press.
  • the lower drums 5 and 7 can be rolled up cloth carpets of the multi-spiral type referenced 8 and 9 or among equivalent carpets, which are stretched and undergo a deflection on the drums 10 and 11.
  • the skin is supported on a canvas mat 12 which, as a result of its particular embodiment in the form of a net capable of bringing no damage or trace to the skin, even if it is pressed, present the characteristic of allowing the liquid medium, vapor or air to pass easily according to the different phases in which it is involved.
  • This mat is driven by the drum 13 itself rotated by the motor 14 (Fig. 2), so as to then pass over a drum 15 mounted mad which also acts as a guide and finally to reach the return drum 16 by passing over the carpet 8 which moves on the drum 5, so as to take the skin which comes from the carpet 1 until bringing it to the exit of the machine.
  • This skin therefore passes over the drum 17 above the steel belt 18 to the return drum 19 to return to the drive roller 13 at which the skin exits in the direction indicated by the arrow 20.
  • the pressing operation is carried out using a series of opposite drums.
  • the upper drums 4 may be covered with rubber in order to prevent any wrinkling or possible deformation of the skin, and they are rotated by the synthetic mat 22 which derives its movement from the drum 23 itself rotated by motor 24 (fig. 2).
  • this carpet in you or felt carpet lets pass instantly the liquid from the skin under the pressing effect and it is represented continuously in the optimal state to receive the next skin .
  • the skin will continue to move towards the dehumidification phase where there is a steel mat 18 mounted on drums 17 and 25, one of which receives its movement motor 27.
  • This carpet is heated using special heat sources, for example by infrared rays 28.
  • the drums 17 and 25 and a series of drums 21 exert a back pressure on a series of rubberized drums 29 which, in association with the return drums 30, drive the felt carpets 31.
  • the skin forced to pass between the steel mat 18 and the mat in you on the 12th being compressed between the different pressure and backpressure drums, will be subjected by the effect of heat to the thermal jump necessary to transform moisture into vapor present in said skin; which humidity, thus compressed, will increase considerably in volume and will be forced to migrate outside the skin, passing through the fabric 12 stretched upwards to be finally absorbed by the felts 31.
  • the skin still held between the canvas carpet 12 and the steel carpet 18, these two being supported by the drum 17, passes into the upper part of the machine for the conditioning phase.
  • a series of drums 35 ensures the inversion of the skin on itself until it penetrates between the cloth carpet 12 in the return phase and the carpet in the form of a net or thread 37 which advances madly, the latter having the function of accompanying the skin until it leaves its machine.
  • the skin is conditioned by the introduction of hot and dry air from the closed circuit installation 38 (fig. 3), which is equipped with a heat pump and a condenser of the type usual.
  • the air is suitably distributed using a series of ducts 39.
  • the machine In its part intended for dehumidification and conditioning, the machine is protected by athermic panels 40, in order to minimize the dispersion of the heat used.
  • the conditioning of the felt is obtained by introduction of hot air coming from radiant elements and being distributed on the felt by a series of guide panels 47.
  • the cloth carpet 48 which starts from the drum 49, arrives at the driving drum 44 and then pass through the drum 50 to the drum 51, these last two drums acting as a reference and one of them also ensuring the guiding of the belts with a view to their return to the drum 49, or else can return after having deposited the skin on drum 42.
  • the skin will come out at the level of the drum 44 and in the event of adhesion to the steel mat 52, provision is made for the intervention of a detachment device 53 of a type known per se.
  • the remaining part of the machine can be produced as in the previous example which has been illustrated in FIG. 1, 2 and 3.
  • the pressing and dehumidification operation can therefore be supplemented by that of packaging, by making the upper part of the steel mat as illustrated in FIG. 1 to 4.
  • the cloth carpet 57 which arrives from the drum 58 passing over the drum 59 is wound up on the roller 54 to then pass over the idler rollers 60 and 61, one of these acting as a guide for the carpet, by completing in this way the path of the latter which is represented on the drum 58.
  • the belt 57 is driven by the cylinder 58 and by counter rollers opposite pressure 62 and 63.
  • a felt mat 65 passing over the drum 66, is wound on the cylinder 64, while the motorized pressure drums 67 advance the pea, providing on the same the necessary pressure.
  • the felt carpet 65 is conditioned continuously by means of the admission of hot air coming from radiant elements 70, as also visible in FIG. 6.
  • the mat 72 set in motion by the motor 73, will take the skin which comes out in the direction indicated by the arrow 74 in order to bring it to subsequent treatments.
  • the process can therefore be considered similar to that which has been previously described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
EP92200463A 1991-02-25 1992-02-17 Verfahren zum Pressen, Entfeuchten und Konditionieren von durchtränkten Häuten sowie im Durchlaufverfahren arbeitende Maschine zur Durchführung dieses Verfahrens Withdrawn EP0501565A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI910032A IT1247075B (it) 1991-02-25 1991-02-25 Procedimento per spremere deumidificare e condizionare pelli bagnate e macchina in continuo per ottenere tale procedimento
ITVI910032 1991-02-25

Publications (1)

Publication Number Publication Date
EP0501565A1 true EP0501565A1 (de) 1992-09-02

Family

ID=11424545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92200463A Withdrawn EP0501565A1 (de) 1991-02-25 1992-02-17 Verfahren zum Pressen, Entfeuchten und Konditionieren von durchtränkten Häuten sowie im Durchlaufverfahren arbeitende Maschine zur Durchführung dieses Verfahrens

Country Status (2)

Country Link
EP (1) EP0501565A1 (de)
IT (1) IT1247075B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108715908A (zh) * 2018-06-14 2018-10-30 安徽申泉化工有限公司 一种皮革烘干机
CN108981351A (zh) * 2018-06-29 2018-12-11 绍兴中纺联检验技术服务有限公司 纺织物干燥装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1275070A (fr) * 1960-10-07 1961-11-03 Aulson Tanning Machinery Compa Procédé et appareil pour le séchage et l'assouplissement du cuir
FR1425914A (fr) * 1964-10-27 1966-01-24 Dispositif apte à faire avancer, étendre, chauffer, presser d'une façon continue,des objets d'épaisseur limitée et de considérable extension superficielle, particulièrement des peaux en cours de traitement
GB1221165A (en) * 1969-02-20 1971-02-03 Turner Ag Maschf Method and apparatus for the continuous demoisturising of leather and like fibrous materials
FR2461907A1 (fr) * 1979-07-16 1981-02-06 Remonato Giancarlo Sechoir continu a etages multiples, particulierement pour peaux tannees
EP0303168A1 (de) * 1987-08-12 1989-02-15 Turner Maschinenbau GmbH Durchlauf-Abwelkpresse
DE3942101A1 (de) * 1988-12-23 1990-06-28 Tampella Oy Ab Anordnung zum trocknen einer faserbahn

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1275070A (fr) * 1960-10-07 1961-11-03 Aulson Tanning Machinery Compa Procédé et appareil pour le séchage et l'assouplissement du cuir
FR1425914A (fr) * 1964-10-27 1966-01-24 Dispositif apte à faire avancer, étendre, chauffer, presser d'une façon continue,des objets d'épaisseur limitée et de considérable extension superficielle, particulièrement des peaux en cours de traitement
GB1221165A (en) * 1969-02-20 1971-02-03 Turner Ag Maschf Method and apparatus for the continuous demoisturising of leather and like fibrous materials
FR2461907A1 (fr) * 1979-07-16 1981-02-06 Remonato Giancarlo Sechoir continu a etages multiples, particulierement pour peaux tannees
EP0303168A1 (de) * 1987-08-12 1989-02-15 Turner Maschinenbau GmbH Durchlauf-Abwelkpresse
DE3942101A1 (de) * 1988-12-23 1990-06-28 Tampella Oy Ab Anordnung zum trocknen einer faserbahn

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CFP CHAUD FROID PLOMBERIE. vol. 42, no. 493, Juin 1988, PARIS FR pages 71 - 78; M. COHAS: 'Le séchage' *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108715908A (zh) * 2018-06-14 2018-10-30 安徽申泉化工有限公司 一种皮革烘干机
CN108981351A (zh) * 2018-06-29 2018-12-11 绍兴中纺联检验技术服务有限公司 纺织物干燥装置

Also Published As

Publication number Publication date
ITVI910032A1 (it) 1992-08-25
ITVI910032A0 (it) 1991-02-25
IT1247075B (it) 1994-12-12

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