WO1990005196A1 - Vorrichtung zum trocknen von leder oder dergleichen - Google Patents
Vorrichtung zum trocknen von leder oder dergleichen Download PDFInfo
- Publication number
- WO1990005196A1 WO1990005196A1 PCT/DE1989/000703 DE8900703W WO9005196A1 WO 1990005196 A1 WO1990005196 A1 WO 1990005196A1 DE 8900703 W DE8900703 W DE 8900703W WO 9005196 A1 WO9005196 A1 WO 9005196A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- leather
- carrier plate
- plate
- intermediate floor
- Prior art date
Links
Classifications
-
- 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
Definitions
- the invention relates to a device for drying leather or the like with a support plate for the leather and a lid which can be placed essentially airtight on the support plate under cover of the leather and which is provided with an elastic intermediate floor pressing the leather onto the support plate .
- Such a device is known for example from DE-AS 12 05 913.
- the known device known as a vacuum dryer, is based on the principle generally used for such vacuum dryers, largely evacuating the space closed by the cover and enclosing the leather to be dried, in order in this way to reduce the evaporation temperature of the water contained in the room ⁇ add.
- the carrier plate is heated so that its heat is transferred to the leather spread on it.
- the invention is based on the object of intensifying the drying of the leather without the need for a particularly high vacuum. According to the invention, this is done in that the intermediate floor is enclosed in an airtight manner from the edge of the cover and at least one first air outlet opens into the space enclosed by the intermediate floor and the support plate, in that the intermediate floor is formed by an air guide plate which is permeable to air both in its longitudinal extent and perpendicular to it is, which is provided on the side facing away from the leather with a separating layer made of air-impermeable material with individual air holes distributed over the air guide plate such that they lie essentially in the area of the leather placed on the carrier plate, and that the cover on its side above the Separating layer is provided with at least a second air passage, a vacuum unit being connected either to the first * or to the second air passage.
- the device according to the invention works with a constantly flowing air stream which, guided by the air guide plate, sweeps over the leather. So it is in contrast
- REPLACEMENT LEAF for the static application of a vacuum in the known vacuum dryers by a dynamic process.
- the water is transported out of the leather in a constant stream, the air flowing in through the air passage in question, which normally has a sufficiently low atmospheric humidity as the ambient air, may constantly absorb the moisture still emitted by the leather.
- the configuration of the device according to the invention which generates an air stream that constantly sweeps across the leather, advantageously allows this air stream to be divided into individually directed or individually strong individual streams, in order in this way to make certain areas of the leather to be dried particularly useful to give intensive dehumidification.
- interchangeable plates can be used as separating layers, each with an air hole pattern which is adapted to the moisture distribution in the leather to be dried.
- the appropriate plate serving as a separating layer can be used, which, with the pattern of its air holes, ensures that, for example, a concentration of particularly large air passages in the middle of the middle area of the leather to be dried is given a particularly intensive drying. Accordingly, it is of course also possible, for example by a pattern of air holes in which a particularly large number of air holes are provided in the outer region of the plate in question, to dry leather in its outer region particularly intensively.
- the partial air flow emerging from each chamber can be influenced individually, which also enables the drying of the leather to be intensified in certain areas.
- interchangeable plates serving as a separating layer and the chamber formation can be provided both individually and in combination in order to achieve the desired individualization of the drying.
- the direction of the air flow can originate both from the bottom of the cover and from the carrier plate.
- a favorable constructive design for the first air passage is obtained if this air passage is set in such a way that it passes through the carrier plate laterally next to the area of the leather to be applied. Regardless of the opening and closing of the cover for inserting or removing the leather, the air passage always remains on a stationary component of the device and therefore does not have to take into account any movement within the device.
- the support plate can be heated or cooled, for which purpose it is to be provided with components for heating and cooling.
- radiators in the cover above the intermediate floor it is possible to mount radiators in the cover above the intermediate floor to heat the leather to be dried. In this way it is thus possible to heat the leather both from the side of the carrier plate and from its other side and, if necessary, to intensify the drying process in this way.
- the carrier plate is made of electrically non-conductive material or an intermediate plate made of electrically non-conductive material is placed on the carrier plate in the area of the leather to be applied. Electrically non-conductive material is also used for the materials forming the intermediate floor. The use of this material This is why it is necessary to bring the leather away from the electrically conductive backing plate in which it heats up best due to the electric field strength then prevailing there.
- one radiator is expediently provided for one or more chambers. Drying is then further intensified by the radiator in the area of the relevant partial air flow.
- the drying can be further strengthened, on the other hand the drying can be increased in the region of those chambers which guide the heated air.
- the energy required for air heating can be diverted from the radiators, with the additional advantage that cooling air required for the radiators is used to supply the chambers with heated air.
- a control is expediently provided on the valves which are provided on the air passages serving the air inlet. and / or the emitters are connected, the control unit controlling the amount of air supplied, the temperature and the air and the output of the emitters, in particular also the times of switching on and off.
- a microprocessor-controlled control system is particularly suitable for this purpose, which, by appropriate programming, allows the device to be quickly adapted to the type of leather to be dried.
- FIG. 1 shows a schematic diagram of the device in section, namely in the open state, with the connection of a vacuum unit via the carrier plate,
- FIG. 2 shows the same device in the closed state, a variant being additionally shown, namely the connection of the vacuum unit to the lid of the device.
- the device shown in FIG. 1 essentially consists of the carrier plate 1 and the cover 2 which can be lowered onto the carrier plate 1.
- the carrier plate In order to seal the cover 2 with respect to the carrier plate 1 in the closed position (see FIG. 2), the carrier plate has 1 at its edges a circumferential sealing strip 15. In the closed state, the flange 16 emerging from the cover 2 presses on this sealing strip 15.
- the carrier plate 1 forms, together with the wall 17, a housing which is divided by the webs 18 into different channels 29 which, depending on the desired processing conditions, of a heating liquid or a cooling medium. In this way, the carrier plate 1 is given a desired temperature.
- the intermediate floor 19 is provided, which consists of the air guide plate 5 and the separating layer 6.
- the air guide plate 5 is formed by an air-permeable material.
- a suitable material for this is nonwoven.
- Another suitable fiber material can also be used. With a corresponding thickness, for example 30 mm, the nonwoven allows a pronounced air flow in the longitudinal direction of the air guide plate 5, of course also in the direction perpendicular to it.
- Layer consists of air-impermeable material, for example a plastic plate, which is provided with air holes 9 at various points.
- the net 11 is stretched below the air guide plate 5.
- the chambers 8 are formed in the cover 2 above the separating layer 6, namely through walls 20 which extend from the bottom 21 of the cover 2 to the separating layer 6.
- the intermediate floor 19 adjoins the edge 22 of the cover 2 in an airtight manner, so that airtightly sealed chambers 8 result which are only connected to the outside air via the second air passages 7.
- the cover 2 is lowered onto the carrier plate 1, whereby by pressing the flange 16 against the sealing strip 15 an airtight seal of the space enclosed by the cover 2 and the carrier plate 1 is brought about.
- the vacuum unit 24 is connected to the first air passages 4 and sucks air out of the space enclosed by the intermediate floor 19 and the carrier plate 1 to a desired vacuum.
- a residual air humidity contained in the space enclosed by the air baffle plate 19 and the carrier plate 1 is sucked off by the vacuum aggregated 24 with the air flow described above, whereby dry external air flows in through the second air passages 7 for constant further drying of the air Leather piece 23 is taken care of.
- the drying process can now be directed individually to certain zones of the leather piece 23, namely through the formation of the chambers 8 with the associated air holes 9 in the separating layer 6 and due to individual control of the air supply to the individual Air passages 7 assigned to chambers 8.
- Each of the air passages 7 is preceded by a valve 10 which can optionally be opened or closed more or less. In this way it is possible to individually adjust the strength of the partial air flows determined by the chambers 8 and to dry certain areas of the leather piece 23 particularly intensively in this way.
- the separating layer 6 is designed to be exchangeable so that, depending on the given moisture distributions in the leather to be dried, different separating layers 6 with a correspondingly adapted hole pattern of the holes 9 can be placed.
- This pattern of the holes 9 contains, for example, a special concentration of holes in the central area of the leather piece 23 or in the outer area thereof in order to make the drying in the relevant concentration area more intensive than in the other areas.
- the device shown in FIG. 1 further contains the microwave generators 12 with associated antennas 25, which together form microwave transmitters which, with their microwave radiation, heat the leather piece 23 from the inside due to dielectric losses occurring in the leather.
- the intermediate floor 19 consists entirely of dielectric material, for which plastic film and plastic fibers are particularly suitable. If the microwave generators 12 are used, the intermediate plate 3 already mentioned above is also required, which is also made of dielectric material. Because of its thickness, it gives the leather piece 23 a favorable position in the electrical field, due to which the microwave radiation can have a full effect on the leather piece 23.
- the carrier plate 1 itself is of course made of dielectric material, e.g. Glass, can be built up, so that in this case the support of an intermediate plate 3 is unnecessary.
- the microwave generators 12 can be individually regulated in terms of their power, so that the individual drying of individual areas of the leather piece 23 can be influenced favorably.
- the controller 13 is also drawn, which acts on the valves 10 and the microwave generators 12 via control lines 26 and 27.
- the control 13 is connected to the sensor 14, which transmits a signal to the control 13 in accordance with the measured air humidity, which is evaluated by the latter in terms of the duration of the drying process.
- the control can be equipped in a known manner with a microprocessor which is programmed according to the type of leather to be dried and which controls the course of the drying process, in particular with regard to the amount of air, the temperature of the air, the power of the radiators and the point in time the switching on and off of these organs.
- the vacuum unit 24 is connected via the first air passages 4 to the space enclosed by the intermediate floor 19 and the carrier plate 1, so that an air flow from the second air passages 7 to the first Air outlets 4 results.
- FIG. 2 which shows the device according to FIG. 1 in the closed position, also shows a variant compared to the embodiment according to FIG. 1, which consists in the fact that the vacuum unit 28 is connected to the second air passages 7.
- An air flow leading via the valves 30 and the first air passages 4 to the second air passages 7 is thus generated here, in which the air flow in the air guide plate 5 is directed in the same way as in the case of the air flow according to FIG The two cases shown is due to the pressure drop ensured in the space between the intermediate floor 19 and the carrier plate 1 that there is a low residual air humidity in the area of the leather piece 23.
- the remaining moisture is then carried away by the air flowing along the surface of the leather piece 23, which in this case essentially extends the longitudinal direction of the air guide plate 5 and is discharged through the air holes 9 as shown in FIG. 2.
- the net 11 arranged below the air guide plate 5 can be dispensed with, since the air guide plate 5 is pressed against the separating layer 6 in this operating case.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE89DE8900703T DE3991276D2 (en) | 1989-11-08 | 1989-11-08 | Vorrichtung zum trocknen von leder oder dergleichen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883838370 DE3838370C2 (de) | 1988-11-11 | 1988-11-11 | Vorrichtung zum Trocknen von Leder oder dergleichen |
DEP3838370.5 | 1988-11-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990005196A1 true WO1990005196A1 (de) | 1990-05-17 |
Family
ID=6367024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1989/000703 WO1990005196A1 (de) | 1988-11-11 | 1989-11-08 | Vorrichtung zum trocknen von leder oder dergleichen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0396697A1 (de) |
AU (1) | AU4493889A (de) |
DE (1) | DE3838370C2 (de) |
WO (1) | WO1990005196A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVI20120338A1 (it) * | 2012-12-19 | 2014-06-20 | Cartigliano Off Spa | Metodo ed apparato per l'essicatura di pelli durante il processo di rifinizione |
CN106755619A (zh) * | 2017-03-16 | 2017-05-31 | 林安益 | 一种皮革染色加工用皮胚充分挤水设备 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004033662B3 (de) * | 2004-07-12 | 2006-02-23 | Henning Warnek | Verfahren zur Herstellung von Formkörpern aus Leder |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH403648A (de) * | 1962-02-09 | 1965-11-30 | Cartigliano Off Spa | Vakuum-Trockenvorrichtung für Leder |
CH423080A (fr) * | 1963-02-26 | 1966-10-31 | Vide Soc Gen Du | Appareil de séchage pour un objet en forme de feuille plate |
DE1233976B (de) * | 1960-03-30 | 1967-02-09 | Paolo Bocciardo | Vorrichtung zum Trocknen einzelner gegerbter Tierhaeute |
EP0036183A2 (de) * | 1980-03-15 | 1981-09-23 | Jiri Dipl. Ing. Dokoupil | Verfahren und Vorrichtung zur Flächenvergrösserung und -trocknung von Lederstücken, Fellen und ähnlichen Materialien |
WO1986007389A1 (en) * | 1985-06-12 | 1986-12-18 | Jiri Dokoupil | Method and device for conditioning leathers, hides, furs and the like |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1296736B (de) * | 1962-02-09 | 1969-06-04 | Cartigliano Off Spa | Vakuumtrockenvorrichtung fuer Leder od. dgl. |
DE1205913B (de) * | 1963-05-29 | 1965-11-25 | Trockentechnik G M B H | Heizplatten-Vakuumtrockner fuer Flachgut |
CH638564A5 (fr) * | 1980-03-27 | 1983-09-30 | Patpan Inc | Procede et appareil de sechage des peaux humides. |
-
1988
- 1988-11-11 DE DE19883838370 patent/DE3838370C2/de not_active Expired - Fee Related
-
1989
- 1989-11-08 EP EP19890912221 patent/EP0396697A1/de not_active Withdrawn
- 1989-11-08 WO PCT/DE1989/000703 patent/WO1990005196A1/de not_active Application Discontinuation
- 1989-11-08 AU AU44938/89A patent/AU4493889A/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1233976B (de) * | 1960-03-30 | 1967-02-09 | Paolo Bocciardo | Vorrichtung zum Trocknen einzelner gegerbter Tierhaeute |
CH403648A (de) * | 1962-02-09 | 1965-11-30 | Cartigliano Off Spa | Vakuum-Trockenvorrichtung für Leder |
CH423080A (fr) * | 1963-02-26 | 1966-10-31 | Vide Soc Gen Du | Appareil de séchage pour un objet en forme de feuille plate |
EP0036183A2 (de) * | 1980-03-15 | 1981-09-23 | Jiri Dipl. Ing. Dokoupil | Verfahren und Vorrichtung zur Flächenvergrösserung und -trocknung von Lederstücken, Fellen und ähnlichen Materialien |
WO1986007389A1 (en) * | 1985-06-12 | 1986-12-18 | Jiri Dokoupil | Method and device for conditioning leathers, hides, furs and the like |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVI20120338A1 (it) * | 2012-12-19 | 2014-06-20 | Cartigliano Off Spa | Metodo ed apparato per l'essicatura di pelli durante il processo di rifinizione |
WO2014096910A1 (en) * | 2012-12-19 | 2014-06-26 | Officine Di Cartigliano S.P.A. | Method and apparatus for drying hides during the finishing process |
KR20150096512A (ko) * | 2012-12-19 | 2015-08-24 | 오피시네 디 카르티글리아노 에스피에이 | 마감 공정 동안 하이드를 건조시키기 위한 방법 및 장치 |
KR101940852B1 (ko) * | 2012-12-19 | 2019-01-21 | 오피시네 디 카르티글리아노 에스피에이 | 마감 공정 동안 하이드를 건조시키기 위한 방법 및 장치 |
CN106755619A (zh) * | 2017-03-16 | 2017-05-31 | 林安益 | 一种皮革染色加工用皮胚充分挤水设备 |
Also Published As
Publication number | Publication date |
---|---|
DE3838370A1 (de) | 1991-06-20 |
EP0396697A1 (de) | 1990-11-14 |
DE3838370C2 (de) | 1993-10-07 |
AU4493889A (en) | 1990-05-28 |
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