EP0194978A2 - Process for decorating leather with fleece and other by means of dyes transferred from a support - Google Patents
Process for decorating leather with fleece and other by means of dyes transferred from a support Download PDFInfo
- Publication number
- EP0194978A2 EP0194978A2 EP86830061A EP86830061A EP0194978A2 EP 0194978 A2 EP0194978 A2 EP 0194978A2 EP 86830061 A EP86830061 A EP 86830061A EP 86830061 A EP86830061 A EP 86830061A EP 0194978 A2 EP0194978 A2 EP 0194978A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- leather
- fleece
- support
- dyes
- sublimation
- 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- Withdrawn
Links
- 239000010985 leather Substances 0.000 title claims abstract description 38
- 239000000975 dye Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000000859 sublimation Methods 0.000 claims abstract description 12
- 230000008022 sublimation Effects 0.000 claims abstract description 12
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 239000000976 ink Substances 0.000 claims description 3
- 238000005034 decoration Methods 0.000 claims description 2
- 238000004040 coloring Methods 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 description 5
- 239000003086 colorant Substances 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/32—Material containing basic nitrogen containing amide groups leather skins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/003—Transfer printing
- D06P5/004—Transfer printing using subliming dyes
Definitions
- a first object of the invention is a process for decorating hides or leather, especially leather with fleece, substantially including: to put the leather front to be decorated into contact with s support-mostly a paper support -carrying dyes which are sublimable through heat treatment; to subject the complex or the whole of the leather and the support with dye to pressure and heating for the sublimation of the dye and its transfer onto the leather.
- the complex of the leather and the support with sublimable dyes is subjected to relatively limited pressure and to heating for a relatively prolonged time.
- the dyes being employed are sublimable cationic inks having low molecular weight
- the process is carried out with heating at temperatures in the range of 170-180°C and over periods of time in the range of 30-35 seconds.
- a further object of the invention is a hide or a leather decorated by dyes transferred thereto by sublimation.
- Still another object of the invention is to provide an apparatus for the decoration of leather and, especially, of leather with fleece, -comprising a press having a mobile plane with heating means, a thermostat and a timer, for carrying out the above process.
- the products obtained by the above process and apparatus are, more specifically, tanned fur-hides or fur-leather -especially chrome tanned -and/or tanned and dyed and even subjected to further flatting, shaving,- stretching and levelling treatments, which products are printed either on the hide or on the fur side, or on both sides by heat-printing with pattern and dyes transfer from paper or other preprinted support, through sublimation.
- Products derived from the above leather are particularly valuable both for the colours and patterns sharpness and for the touch which is in no way disturbed by dyeing.
- Hides or leather to be printed through this process may be hides of any fur-bearing animals, which has been subjected to tanning or tanning and dyeing and to possible further finishing and preparation treatments like napping - (that is "nappatura") or other.
- the tanning is, advantageously, a chrome tanning or equivalent
- the printing is carried out through a sublimation transfer heat-printing process that consists in the dyes and patterns transfer from a matrix -made up of a paper support or other material on which the desired dyes and patterns have been previously predisposed -to the above described hide or leather.
- the transfer from the support to the leather takes place through the dye sublimation, that is, owing to the penetration, under gaseous form, of the dye and pattern into the hide fibres, or into the fur, deeply down in the thickness of the fleece mass.
- the leather and/or fur retain, though dyed, their own characteristics.
- the dyes are cationic inks with low molecular weight and being apt to sublime after a heat treatment and to penetrate into and be fixed on the hide and fur fibres.
- the transfer is provided by a heat printing transfer press which carries out the coupling in presence of high heat and pressure and for a prolonged period of time.
- This kind of printing has already been used for some types of fabrics, mostly polyester fabrics, but with criteria and means which are different from those that have been devised for its use in decorating hides or leather according to the invention.
- the hides are previously shaved and stretched on the hair side, then splinted and their grease removed; they are oil-tanned (to make them even at the hide side) and pressed to avoid settings of the leather under printing which would result in printing defects.
- the process according to the invention requires temperatures of 170-180°C, relatively lower pressures than those needed for fabrics, and a treatment time of the order of 30-35 seconds, in comparison with the 210-220°C and 25 seconds required for fabrics.
- the present invention gives rise to significant advantages in respect to other types of printing.
- the leather Since the printing is obtained through dye sublimation in the heat-printing process, the leather retains its characteristics as it would be if it were dyed by immersion oxidation, the latter being used, however, only for background colours. Besides, the printing according to the invention -still leaving unchanged the leather characteristics - permits the achievement of a very fine drawin and colour sharpness, as well as a dyeing eveness that cannot be obtained by any other process. These results cannot be reached by the known types of printing.
- a pigment printing is currently applied on the hide side, which printing consists in the application -by means of a clich6 -of dyes prepared in a self-polymerizing solution, which reticulate while anchoring themselves on the printed surface like a painting; therefore, these paintings completely modify the surface covered by the printing thus leading to a product different from the original one, necessarily less soft and subject to some -even if slight -abrasion due to the normal use of a clothing or furniture article made with hides, or leather, printed as above described.
- a traditional printing on the fur side is usually performed through a cliche-printing, drying of dyes and fixing by ironing. This process allows to carry out only very rough patterns and poorly uniform colours if compared with the printing on the fur side by heat-printing and sublimation according to the invention that allows the achieving of a pattern fineness and hue graduation particularly refined.
Abstract
Process for decorating hides or leather, especially leather with fleece, according to which: the leather front to be decorated is put into contact with a support -mostly a paper support -carrying dyes which are sublimable through heat 'treatment; the complex or the whole of the leather and the support with dye is subjected to pressure and heating for the sublimation of the dye and its transfer onto the leather.
Description
- A first object of the invention is a process for decorating hides or leather, especially leather with fleece, substantially including: to put the leather front to be decorated into contact with s support-mostly a paper support -carrying dyes which are sublimable through heat treatment; to subject the complex or the whole of the leather and the support with dye to pressure and heating for the sublimation of the dye and its transfer onto the leather.
- In the process in question, the complex of the leather and the support with sublimable dyes is subjected to relatively limited pressure and to heating for a relatively prolonged time. The dyes being employed are sublimable cationic inks having low molecular weight The process is carried out with heating at temperatures in the range of 170-180°C and over periods of time in the range of 30-35 seconds.
- A further object of the invention is a hide or a leather decorated by dyes transferred thereto by sublimation. In particular, it is an object of the invention to provide a leather with fleece in which the fleece is decorated by dyes transferred thereto by sublimation. It is also possible to decorate, in the same way, the surface of the hide or leather opposite to the fleece side.
- Still another object of the invention is to provide an apparatus for the decoration of leather and, especially, of leather with fleece, -comprising a press having a mobile plane with heating means, a thermostat and a timer, for carrying out the above process.
- - The products obtained by the above process and apparatus are, more specifically, tanned fur-hides or fur-leather -especially chrome tanned -and/or tanned and dyed and even subjected to further flatting, shaving,- stretching and levelling treatments, which products are printed either on the hide or on the fur side, or on both sides by heat-printing with pattern and dyes transfer from paper or other preprinted support, through sublimation.
- Products derived from the above leather are particularly valuable both for the colours and patterns sharpness and for the touch which is in no way disturbed by dyeing.
- Hides or leather to be printed through this process may be hides of any fur-bearing animals, which has been subjected to tanning or tanning and dyeing and to possible further finishing and preparation treatments like napping - (that is "nappatura") or other. The tanning is, advantageously, a chrome tanning or equivalent
- The printing is carried out through a sublimation transfer heat-printing process that consists in the dyes and patterns transfer from a matrix -made up of a paper support or other material on which the desired dyes and patterns have been previously predisposed -to the above described hide or leather. The transfer from the support to the leather takes place through the dye sublimation, that is, owing to the penetration, under gaseous form, of the dye and pattern into the hide fibres, or into the fur, deeply down in the thickness of the fleece mass. The leather and/or fur retain, though dyed, their own characteristics.
- The dyes are cationic inks with low molecular weight and being apt to sublime after a heat treatment and to penetrate into and be fixed on the hide and fur fibres.
- The transfer is provided by a heat printing transfer press which carries out the coupling in presence of high heat and pressure and for a prolonged period of time. This kind of printing has already been used for some types of fabrics, mostly polyester fabrics, but with criteria and means which are different from those that have been devised for its use in decorating hides or leather according to the invention. To perform the printing on hides or feather, the hides are previously shaved and stretched on the hair side, then splinted and their grease removed; they are oil-tanned (to make them even at the hide side) and pressed to avoid settings of the leather under printing which would result in printing defects. The process according to the invention requires temperatures of 170-180°C, relatively lower pressures than those needed for fabrics, and a treatment time of the order of 30-35 seconds, in comparison with the 210-220°C and 25 seconds required for fabrics.
- In addition, while in the case of fabrics there are usually used heat-printing machines with continuous working calender cylinder, in the process in question, instead, presses having a mobile plane are used.
- The present invention gives rise to significant advantages in respect to other types of printing.
- Since the printing is obtained through dye sublimation in the heat-printing process, the leather retains its characteristics as it would be if it were dyed by immersion oxidation, the latter being used, however, only for background colours. Besides, the printing according to the invention -still leaving unchanged the leather characteristics - permits the achievement of a very fine drawin and colour sharpness, as well as a dyeing eveness that cannot be obtained by any other process. These results cannot be reached by the known types of printing. In fact, a pigment printing is currently applied on the hide side, which printing consists in the application -by means of a clich6 -of dyes prepared in a self-polymerizing solution, which reticulate while anchoring themselves on the printed surface like a painting; therefore, these paintings completely modify the surface covered by the printing thus leading to a product different from the original one, necessarily less soft and subject to some -even if slight -abrasion due to the normal use of a clothing or furniture article made with hides, or leather, printed as above described. A traditional printing on the fur side is usually performed through a cliche-printing, drying of dyes and fixing by ironing. This process allows to carry out only very rough patterns and poorly uniform colours if compared with the printing on the fur side by heat-printing and sublimation according to the invention that allows the achieving of a pattern fineness and hue graduation particularly refined.
- It is understood that what has been here before described is an exemplification given only as a practical demonstration of the invention as the invention may vary in the forms and dispositions,without, nevertheless, departing from the scope of the idea on which the same invention is based.
Claims (8)
1. A process for decorating hides or leather, especially leather with fleece, characterized in that the leather front to be decorated is put into contact with a support -mostly a paper support -carrying dyes which are sublimable through heat treatment; that the complex or the whole of the leather and the support with dye is subjected to pressure and heating for the sublimation of the dye and its transfer onto the leather, after its flattening, shaving, stretching and other.
2. Process according to the preceding claim, characterized in that the whole of the leather and the support with sublimable dyes is subjected to relatively low pressure, and to heating over a relatively long period of time.
3. Process according to the preceding claims, characterized in that as colouring matter cationic sublimable inks are used having a low molecular weight.
4. Process according to the preceding claims, characterized in that the heating is carried out at temperatures in the range of 170-180°C and over time periods in the range of 30-35 seconds.
5. Process as described and illustrated for the specified purposes.
6. Hide or leather decorated by dyes transferred through sublimation.
7. Leather with fleece, in which the fleece is decorated by dyes transferred through sublimation.
8. An apparatus to carry out the decoration of hides or leather, especially leather with fur or fleece, comprising a press having a mobile plane with heating means, a thermostat and a timer for carrying out the process of claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT936185 | 1985-03-15 | ||
| IT09361/85A IT1201252B (en) | 1985-03-15 | 1985-03-15 | PROCEDURE FOR THE DECORATION OF LEATHER WITH FUR AND OTHER, WITH DYES TRANSFERRED FROM SUPPORT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0194978A2 true EP0194978A2 (en) | 1986-09-17 |
| EP0194978A3 EP0194978A3 (en) | 1988-06-15 |
Family
ID=11128986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86830061A Withdrawn EP0194978A3 (en) | 1985-03-15 | 1986-03-14 | Process for decorating leather with fleece and other by means of dyes transferred from a support |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0194978A3 (en) |
| JP (1) | JPS61215786A (en) |
| ES (1) | ES8704567A1 (en) |
| IT (1) | IT1201252B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251209A (en) * | 1990-12-01 | 1992-07-01 | Brainstorm Ltd | Transfer by heating of sublimation ink from a carrier |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006328285A (en) * | 2005-05-30 | 2006-12-07 | Is Paint Co Ltd | Sublimation transfer print-coated leather product and method for producing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2123073A1 (en) * | 1970-11-13 | 1972-09-08 | Henry Jacques | Transfer printed leather - by hot pressing tanned leather against a support printed with sublimable dyes |
| GB1295634A (en) * | 1968-11-26 | 1972-11-08 | ||
| JPS5244201A (en) * | 1975-10-01 | 1977-04-07 | Dainippon Printing Co Ltd | Process for coloring natural leather by transferring |
-
1985
- 1985-03-15 IT IT09361/85A patent/IT1201252B/en active
-
1986
- 1986-03-10 ES ES552836A patent/ES8704567A1/en not_active Expired
- 1986-03-14 JP JP61055171A patent/JPS61215786A/en active Pending
- 1986-03-14 EP EP86830061A patent/EP0194978A3/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1295634A (en) * | 1968-11-26 | 1972-11-08 | ||
| FR2123073A1 (en) * | 1970-11-13 | 1972-09-08 | Henry Jacques | Transfer printed leather - by hot pressing tanned leather against a support printed with sublimable dyes |
| JPS5244201A (en) * | 1975-10-01 | 1977-04-07 | Dainippon Printing Co Ltd | Process for coloring natural leather by transferring |
Non-Patent Citations (3)
| Title |
|---|
| CHEMICAL ABSTRACTS, vol. 87, no. 12, 19th September 1977, page 80, abstract no. 86352x, Columbus, Ohio, US; & JP-A-77 44 201 (DAINIPPON PRINTING CO., LTD.) 07-04-1977 * |
| INTERNATIONALES TEXTIL-BULLETIN, WELTAUSGABE F[RBEREI, DRUCKEREI, AUSR]STUNG, no. 2, 1973, pages 103,104,111,112,117,118,123,124,129,130,135,136; H. SCHMIDT: "Der Thermo-Transferdruck mit Dispersionsfarbstoffen" * |
| TEXTILVEREDLUNG, vol. 12, no. 5, 1977, pages 224-228, Basel, CH; H.J. STEIN: "Maschinelle Voraussetzungen f}r den Transferdruck" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251209A (en) * | 1990-12-01 | 1992-07-01 | Brainstorm Ltd | Transfer by heating of sublimation ink from a carrier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61215786A (en) | 1986-09-25 |
| ES552836A0 (en) | 1987-04-16 |
| IT8509361A0 (en) | 1985-03-15 |
| ES8704567A1 (en) | 1987-04-16 |
| EP0194978A3 (en) | 1988-06-15 |
| IT1201252B (en) | 1989-01-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 18D | Application deemed to be withdrawn |
Effective date: 19881216 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LOMBARDI, GINO |