EP2154255A1 - Machine for roller finishing natural skins, leather and the like, functioning with the so-called "synchro" method - Google Patents
Machine for roller finishing natural skins, leather and the like, functioning with the so-called "synchro" method Download PDFInfo
- Publication number
- EP2154255A1 EP2154255A1 EP09162652A EP09162652A EP2154255A1 EP 2154255 A1 EP2154255 A1 EP 2154255A1 EP 09162652 A EP09162652 A EP 09162652A EP 09162652 A EP09162652 A EP 09162652A EP 2154255 A1 EP2154255 A1 EP 2154255A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machine
- roller
- cylinder
- leather
- skins
- 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.)
- Granted
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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
- C14B1/44—Mechanical treatment of leather surfaces
- C14B1/56—Ornamenting, producing designs, embossing
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Fiber Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Soil Working Implements (AREA)
Abstract
Description
- The present finding concerns the manufacture of a machine for roller finishing natural skins, leather and the like, functioning with the so-called "synchro" method; the finding also concerns the use of a gravure cylinder, of the per se known type, to be used in the aforementioned machine.
- As it is known, for carrying out the finishing operation in the field of tanning, roller spreading machines are particularly used, commonly called "coating machines", in which the skin is conveyed by a lower roller or belt and where a opposing upper spreading roller, made up of a steel gravure cylinder, pressing down on the surface of the skin, countered by the underlying cylinder or belt, deposits a film of liquid product, previously distributed on the surface of the aforementioned upper roller, through a doctor blade, onto the aforementioned surface.
- A perfect outcome of the finishing operation of the skins, apart from depending on a regular and constant pulling of the product in the spreading area, i.e., the area comprised between the upper roller and the underlying lower roller or conveyer belt, mainly depends on the spreading or "coating" action, i.e., the depositing action of liquid product on the entire surface of the material to be treated.
- Such processing is problematic, because the skins often have an irregular thickness and the surface is never perfectly flat, but has depressions and concavities and all of this prevents a total and uniform contact between the surface of the spreading roller and the surface of the material to be treated.
- In practice, the chemical product, held inside the incisions, commonly called "pits" and formed on the surface of the spreading cylinder, is released either only at the surface areas of the skin, leaving out the cavities and the nicks of the skin itself, when a covering process is carried out or only on the incisions, depressions, cavities and scratches when a filling operation is carried out. Similarly, it is not possible to uniformly distribute small quantities of finishing product on the surface of printed skins (fake flower, dollar sign, crocodile), where the product deposits on the surface and not on the nicks ("millepunti" effect), for which reason it is necessary to use another finishing technology, that of spraying the chemical product on the skin through airbrush.
- The purpose of the present finding is to make a machine for roller finishing skins, leather and the like, in which the gravure cylinder for spreading, which rotates in synchrony, or rather with a direction in agreement with the advancing of the skin, positioned above the lower roller or conveyer belt, uniformly deposits the chemical product on the entire surface of the skin, on both the ridges and depressions, and on the cavities and nicks.
- Such a purpose is obtained by using an upper spreading roller, consisting of a metal cylinder, the surface of which is covered by a highly deformable elastic material, such as an elastomer or natural or synthetic rubbers, which enters into contact with the entire surface of the skin, adapting to its entire profile, or rather with the flat part, with the possible protrusions and also with the depressions, the incisions, the nicks and concavities.
- The finding shall be better understood through the description of one of its possible embodiments, given just for non-limiting purposes, with the help of the attached drawing tables, in which:
-
fig. 1 (table I) represents a schematic perspective view of the finishing machine according to the finding; -
fig. 2 (table II) represents a front view of the spreading roller or gravure cylinder according to the finding; -
fig. 3 represents a side view of the gravure cylinder, sectioned according to the line III-III offig.2 ; -
fig. 4 represents a detailed view of the gravure cylinder/skin contact area. - As can be seen in the figures, the upper roller or gravure cylinder of the finishing machine, wholly indicated with the
reference numeral 1 and which operates "synchro" or "direct" mode, comprises ametal drum 2 covered, on its outer part, by a layer of highly deformable elastic material 3, the incised surface 4 of which conveys the liquid covering product, such as dye or fixatives "C", from the doctor blade "R", up to the depositing on the surface "S2" of the skin "P", supported and pulled by anunderlying belt 5 or roller 6. - As can be seen in the detailed view of
fig. 4 , by using the highly deformable elastic material 3, the surface "S1" of the gravure cylinder deforms and exactly covers the profile of the surface "S2" of the skin "P", or rather complete contact between the two aforementioned surfaces is obtained, in both the protruding areas "H", and the concavity areas "K", all to obtain a regular and homogeneous deposit of chemical product. It is also possible to foresee that the outer surface of the cylinder be only partially incised. Moreover, it is possible to foresee that the outer surface of the gravure cylinder prints a drawing.
Claims (12)
- MACHINE FOR ROLLER FINISHING NATURAL SKINS, LEATHER AND THE LIKE, also called "coating machine" or "spreading machine", in which the skins (P) are conveyed by a lower roller (6) or by a belt (5) and where an upper spreading roller, made up of a gravure cylinder (1), pressing down on the surface (S2) of the skin, countered by the underlying cylinder or belt, deposits a film of liquid product (C), previously distributed on the surface (S1) of the aforementioned upper roller through a doctor blade (R), onto the aforementioned surface,
said machine being characterized in that the upper spreading roller or gravure cylinder (1), which operates in "synchro" mode, i.e., with the aforementioned spreading roller rotating in a direction in agreement with the advancing of the skin, comprises a metal cylindrical drum (2), covered, on the outer part, by a layer of elastic material (3) with high elasticity and deformability, the surface (4) of which is incised. - MACHINE FOR ROLLER FINISHING NATURAL SKINS, LEATHER AND THE LIKE, according to claim 1, characterized in that the highly deformable outer layer (3) of the gravure cylinder (1) has a Shore A hardness equal to or less than 40.
- MACHINE FOR ROLLER FINISHING NATURAL SKINS, LEATHER AND THE LIKE, according to claim 1, characterized in that the outer layer (3) of the gravure cylinder (2) is made with an elastomer.
- MACHINE FOR ROLLER FINISHING NATURAL SKINS, LEATHER AND THE LIKE, according to claim 1, characterized in that the outer layer (3) of the gravure cylinder (2) is made from natural rubber.
- MACHINE FOR THE FINISHING OF NATURAL SKINS, LEATHER AND THE LIKE, according to claim 1, characterized in that the outer layer (3) of the gravure cylinder (2) is made from synthetic rubber.
- MACHINE, ACCORDING TO CLAIM 1, characterized in that the outer surface of the cylinder is only partially incised.
- MACHINE, ACCORDING TO CLAIM 6, characterized in that the outer surface of the cylinder prints a drawing.
- USE OF A GRAVURE CYLINDER, made up of a metal cylindrical drum (2), covered, on its outer part, by a layer of material (3) with high elasticity and deformability, on which the incised portion (4) is located, in a machine for roller finishing natural skins, leather and the like, which operates in "synchro" conditions, according to one or more of claims 1 to 5.
- USE, according to claim 8, characterized in that it foresees that the outer layer of highly elastic and deformable material (3), present on the outer part of the metal cylindrical drum (2), is made from a material with Shore A hardness equal to or less than 40.
- USE, according to claim 9, characterized in that it foresees that the outer layer (3) of the cylinder is made with an elastomer.
- USE, according to claim 9, characterized in that it foresees that the outer layer (3) of the cylinder (1) is made from natural rubber.
- USE, according to claim 9, characterized in that it foresees that the outer layer (3) of the cylinder (1) is made from synthetic rubber.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVI2008A000187A IT1390925B1 (en) | 2008-08-05 | 2008-08-05 | ROLLER FINISHING MACHINE FOR NATURAL, LEATHER AND THE LIKE, WORKING WITH THE "SINCRO" COSIDDETTO METHOD. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2154255A1 true EP2154255A1 (en) | 2010-02-17 |
EP2154255B1 EP2154255B1 (en) | 2010-12-22 |
Family
ID=41404364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09162652A Active EP2154255B1 (en) | 2008-08-05 | 2009-06-15 | Machine for roller finishing natural skins, leather and the like, functioning with the so-called "synchro" method |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2154255B1 (en) |
AT (1) | ATE492654T1 (en) |
DE (1) | DE602009000461D1 (en) |
ES (1) | ES2358237T3 (en) |
IT (1) | IT1390925B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3103887A1 (en) * | 2015-06-11 | 2016-12-14 | GE.MA.TA. S.p.A. | Machine for continuous dyeing of leather items |
EP3150728A1 (en) * | 2015-10-02 | 2017-04-05 | GE.MA.TA. S.p.A. | Machine for roller finishing natural hides and leather |
ITUA20161537A1 (en) * | 2016-03-10 | 2017-09-10 | Ge Ma Ta Spa | LINE TO FINISH LEADS THAT CONTINUE AND AUTOMATICALLY LEAD TO THE ENTIRE FINISHING CYCLE |
IT201700037050A1 (en) * | 2017-04-04 | 2018-10-04 | Ge Ma Ta Spa | APPARATUS FOR THE CONTINUOUS DEPOSITION OF TWO DIFFERENT CHEMICAL SUBSTANCES ON A SKIN AND A CONTINUOUS DEPOSITION METHOD |
IT201800007456A1 (en) * | 2018-07-24 | 2020-01-24 | MACHINE FOR THE FINISHING OF FLEXIBLE LAMINARY SURFACES FOR COVERING OBJECTS |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3623444A1 (en) * | 1985-07-17 | 1987-01-22 | Schmidt Alexander Gmbh | Continuous-flow pressing and ironing machine for leather |
DE202006003489U1 (en) * | 2005-05-27 | 2006-05-04 | Schaefer, Philipp | Leather embossing apparatus using an applied plastics dispersion has a preheater arranged in the conveyor zone before the embossing gap |
-
2008
- 2008-08-05 IT ITVI2008A000187A patent/IT1390925B1/en active
-
2009
- 2009-06-15 AT AT09162652T patent/ATE492654T1/en active
- 2009-06-15 ES ES09162652T patent/ES2358237T3/en active Active
- 2009-06-15 EP EP09162652A patent/EP2154255B1/en active Active
- 2009-06-15 DE DE602009000461T patent/DE602009000461D1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3623444A1 (en) * | 1985-07-17 | 1987-01-22 | Schmidt Alexander Gmbh | Continuous-flow pressing and ironing machine for leather |
DE202006003489U1 (en) * | 2005-05-27 | 2006-05-04 | Schaefer, Philipp | Leather embossing apparatus using an applied plastics dispersion has a preheater arranged in the conveyor zone before the embossing gap |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3103887A1 (en) * | 2015-06-11 | 2016-12-14 | GE.MA.TA. S.p.A. | Machine for continuous dyeing of leather items |
EP3150728A1 (en) * | 2015-10-02 | 2017-04-05 | GE.MA.TA. S.p.A. | Machine for roller finishing natural hides and leather |
ITUA20161537A1 (en) * | 2016-03-10 | 2017-09-10 | Ge Ma Ta Spa | LINE TO FINISH LEADS THAT CONTINUE AND AUTOMATICALLY LEAD TO THE ENTIRE FINISHING CYCLE |
IT201700037050A1 (en) * | 2017-04-04 | 2018-10-04 | Ge Ma Ta Spa | APPARATUS FOR THE CONTINUOUS DEPOSITION OF TWO DIFFERENT CHEMICAL SUBSTANCES ON A SKIN AND A CONTINUOUS DEPOSITION METHOD |
IT201800007456A1 (en) * | 2018-07-24 | 2020-01-24 | MACHINE FOR THE FINISHING OF FLEXIBLE LAMINARY SURFACES FOR COVERING OBJECTS | |
EP3599289A3 (en) * | 2018-07-24 | 2020-03-04 | DMS International Societa' a Responsabilita' Limitata Semplificata | Machine for finishing flexible laminar surfaces used as coating of objects |
Also Published As
Publication number | Publication date |
---|---|
ES2358237T3 (en) | 2011-05-06 |
EP2154255B1 (en) | 2010-12-22 |
ATE492654T1 (en) | 2011-01-15 |
ITVI20080187A1 (en) | 2010-02-06 |
DE602009000461D1 (en) | 2011-02-03 |
IT1390925B1 (en) | 2011-10-19 |
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