Leather manufactures – Machines – Fluid-treating apparatus
Patent
1995-01-13
1997-08-05
Neas, Michael A.
Leather manufactures
Machines
Fluid-treating apparatus
69 21, 68202, 68204, C14C 100
Patent
active
056531303
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The application of fluids to a leather surface is one of the most important operations for the finishing of leather in leather production.
The most common procedures are the spraying of fluid using an air pressure pistol (compressed air jet), the pouring of a thin layer and more recently the so-called pressure procedure using a perforated roll.
All three procedures have advantages and disadvantages.
The spraying procedure using air pressure delivered from rotating nozzles yields the finest layers but it causes a high amount of pollution and results in the highest amount of fluid losses (for example color).
The pouring procedure, which utilizes fluid layers, will cause less pollution, but it can only be applied with special fluids and requires larger application amounts. The pieces of leather must run through at a relatively high speed, which will cause great difficulties when dealing with the synchronization of the drying facility.
The pressure procedure, which uses perforated rolls, will minimize the consumption of fluids (color) and is practicable for a variety of different kinds of fluid and application amounts. Disadvantages of this procedure include the fact that different, relatively expensive application rolls have to be used for the various application amounts. Further, the exchange of rolls is time consuming. The integration of machines with pressure rolls into the drying lane will also cause problems. The running through of leather that is not perfectly smooth will be a problem due to the fact that the leather will crease easily and thus is not possible without a spreading device.
SUMMARY OF THE INVENTION
The device and procedure of the present invention eliminates almost all disadvantages of the above mentioned procedures. The new procedure will work as follows. A piece of leather lying on a bearing support will be moved in parallel with a moving belt having an open-porous structure similar to meshes, whereby the pores or meshes are filled with fluid and the fluid will be transmitted onto the leather surface by pressure. The induction of fluid into exactly defined pores or meshes of the belt into the zone of pressure yields an exactly defined amount of fluid. The application amount of the fluid will be defined or controlled by the relative speed of the leather surface and the meshed or porous-structured belt.
BRIEF DESCRIPTION OF THE DRAWINGS
The transmittal of fluid from the meshes or pores of the belt onto the leather surface by pressure can be realized in various ways, which can be seen in the figures wherein:
FIG. 1 is a general, diagrammatic view of the apparatus of the present invention.
FIGS. 2(a) and 2(b) are diagrammatic views of a pressure roller embodiment of the present invention.
FIG. 3 is a diagrammatic view of an oscillating pressure tool embodiment of the present invention.
FIG. 4 is a diagrammatic view of a roller with bristles or lamellas embodiment of the present invention.
FIG. 5 is a diagrammatic view of a linear air flow embodiment of the present invention.
FIG. 6(a) provides a more complete diagrammatic view of a system with linear air flow and 6(b) shows the resultant treatment from the system of 6(a).
In the Figures, the numbers will refer to:
DETAILED DESCRIPTION
The procedure of the present invention is principally described with reference to FIG. 1. The leather 3 is moved on a movable bearing support 1 in direction 2. The mesh-like 6 or open-porous-structured 7 belt will be lead parallel to the leather surface 10 along course 4. The belt 5 will contain fluid 8 in the meshes 6 or in the pores 7. In the zone of pressure 9 the fluid 8 will be transmitted onto the leather surface 10.
The pressure movement 9 in the zone of pressure can be effected either by a pressure roll 12 (FIG. 2a and 2b) or by an oscillation 13 of a tool 14 (FIG. 3) or by a rotating bristle 15 or by a lamella roll 16 (FIG. 4). A very effective alternative to this procedure is the pressure output by a linear air flow 18 (FIG. 5).
Based on this procedure, various fa
REFERENCES:
patent: 2868614 (1959-01-01), Ushakoff
patent: 3574278 (1971-04-01), Paterson
patent: 4050269 (1977-09-01), Mayer
patent: 4442560 (1984-04-01), van Wersch et al.
patent: 4535611 (1985-08-01), Masuda
patent: 4548611 (1985-10-01), Paterson et al.
patent: 5000017 (1991-03-01), Petersen
patent: 5235829 (1993-08-01), Belluzzi
patent: 5255539 (1993-10-01), Zimmer
Dokoupil Jiri
Dokoupilova Magda
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