EP0955182B1 - Thermotransferband - Google Patents
Thermotransferband Download PDFInfo
- Publication number
- EP0955182B1 EP0955182B1 EP99108563A EP99108563A EP0955182B1 EP 0955182 B1 EP0955182 B1 EP 0955182B1 EP 99108563 A EP99108563 A EP 99108563A EP 99108563 A EP99108563 A EP 99108563A EP 0955182 B1 EP0955182 B1 EP 0955182B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thermal transfer
- transfer ribbon
- wax
- amorphous polymer
- carrier
- 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.)
- Expired - Lifetime
Links
- -1 polyethylene Polymers 0.000 claims description 30
- 239000004698 Polyethylene Substances 0.000 claims description 23
- 229920000573 polyethylene Polymers 0.000 claims description 23
- 229920006125 amorphous polymer Polymers 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 229920001225 polyester resin Polymers 0.000 claims description 8
- 239000004645 polyester resin Substances 0.000 claims description 8
- 239000003086 colorant Substances 0.000 claims description 7
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 238000007373 indentation Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- 239000007767 bonding agent Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 239000001993 wax Substances 0.000 description 29
- 239000011230 binding agent Substances 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 230000009477 glass transition Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003678 scratch resistant effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 235000013871 bee wax Nutrition 0.000 description 2
- 239000012166 beeswax Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 239000012050 conventional carrier Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000000025 natural resin Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- DSEKYWAQQVUQTP-XEWMWGOFSA-N (2r,4r,4as,6as,6as,6br,8ar,12ar,14as,14bs)-2-hydroxy-4,4a,6a,6b,8a,11,11,14a-octamethyl-2,4,5,6,6a,7,8,9,10,12,12a,13,14,14b-tetradecahydro-1h-picen-3-one Chemical compound C([C@H]1[C@]2(C)CC[C@@]34C)C(C)(C)CC[C@]1(C)CC[C@]2(C)[C@H]4CC[C@@]1(C)[C@H]3C[C@@H](O)C(=O)[C@@H]1C DSEKYWAQQVUQTP-XEWMWGOFSA-N 0.000 description 1
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 1
- 239000004169 Hydrogenated Poly-1-Decene Substances 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 239000004204 candelilla wax Substances 0.000 description 1
- 235000013868 candelilla wax Nutrition 0.000 description 1
- 229940073532 candelilla wax Drugs 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000019383 crystalline wax Nutrition 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- IUJAMGNYPWYUPM-UHFFFAOYSA-N hentriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC IUJAMGNYPWYUPM-UHFFFAOYSA-N 0.000 description 1
- 239000012182 japan wax Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000012186 ozocerite Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000007763 reverse roll coating Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/392—Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents
- B41M5/395—Macromolecular additives, e.g. binders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/392—Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents
Definitions
- the invention relates to a thermal transfer ribbon with a support, with one on one Side of the carrier trained thermal transfer ink and optionally with other Layers, the thermal transfer color in addition to a colorant an amorphous Contains polymer and a wax.
- a thermal transfer ribbon of the type described above goes from DE 36 13 846 out.
- the thermal transfer ink of this known thermal transfer ribbon contains a amorphous polymer which has a weight average molecular weight Mw of no more than 10,000, a number average molecular weight Mn of less than 5,000 and one Glass transition temperature of 50 to 80 ° C has.
- the amorphous polymer does at least 50% by weight of the thermal transfer ink, based on its solids content, out.
- This thermal transfer ribbon is intended to provide clear color reproduction when printing enable and in terms of resolution, sensitivity, Transfer and fixation properties should be satisfactory.
- EP-B-0 380 920 recommends for Achieving scratch-resistant prints that in the thermal transfer ink during printing non-melting, colorant-containing polymer spheres are included, which in a the heat treatment downstream of the printing process are fusible.
- the after symbols immediately obtained during the printing process do not initially show the desirable scratch resistance. This is achieved by adding further symbols Heat is supplied. This creates a new structure of the printed Symbol.
- This proposal is disadvantageous in that it follows the actual one Printing process requires a second heat treatment step.
- Thermal transfer ribbon with a conventional carrier, with one on one side of the carrier trained layer of a thermal transfer ink and a separating layer between Carrier and layer of thermal transfer ink before.
- the interface is wax-bound and contains waxes with a melting point of about 70 to 110 ° C and one polymeric wax plasticizer with a glass transition temperature Tg of -30 to + 70 ° C.
- the Thermal transfer ink layer further contains at least about 20% by weight Natural resin, modified natural resin and / or synthetic resin.
- the transferred one Thermal transfer ink when printing on paper labels in particular has good adhesion as well as good abrasion and scratch resistance, and when printing quickly and is delivered precisely with the underlying separation or release layer.
- the disadvantage is the fact that with a certain effort described separation layer is to be formed, which is at least one three-tier system.
- the present invention the object of the above Develop thermal transfer ribbon so that no separation layer is required, and nevertheless that in connection with the description of the subject of DE 196 12 393 A1 achieved advantages can be achieved.
- the thermal transfer ink as Binder is a polar polyethylene wax and an amorphous polymer that is a Weight average molecular weight Mw greater than about 10,000 and a number average of Has molecular weight Mn of less than about 6,000.
- the thermal transfer color of the thermal transfer ribbon contains an amorphous polymer as an essential binder component, in particular of at least about 50% by weight, based on the dry matter content of the Thermal transfer ink. If one speaks of an "amorphous" polymer, then so this is supposed to mean that its structural characteristics appearing below radiographic aspects can be described as amorphous. As a result, Under the term “amorphous polymer”, such oligomers and / or Polymers fall that contain certain partially crystalline components, for example up to about 30% by weight, especially up to about 10% by weight. Contrary to the trend-setting According to DE 36 13 846 C2, the invention uses an amorphous polymer which has a weight average molecular weight Mw greater than about 10,000. This is surprising.
- weight average molecular weight Mw is more than is about 10,000, probably explained by the fact that an additional and mandatory polar polyethylene wax must be present. If the Mw value of Below 10,000, which would be in accordance with DE 36 13 846 C2, then there is the disadvantageous effect that the adhesion of the thermal transfer ink to Carrier film is too high and there is no homogeneous color transfer during printing is guaranteed.
- the amorphous polymer is a weight average Molar mass Mw from 10,000 to about 15,000 and a number average molar mass Mn less than about 5,000, especially about 2,000 to 3,000.
- polar Polyethylene wax and amorphous polymer can be specified to 1 part by weight polar polyethylene wax about 3 to 5 parts by weight, in particular about 4 parts by weight, no amorphous polymer.
- the amorphous polymer content is less than about 50% by weight, then this can lead to the desirable transparency of the thermal transfer ink and thus the color reproducibility is impaired. So in general it is preferred if the amorphous polymer content is more than about 50% by weight, in particular more than about 70 wt .-%, but the maximum is about 80 wt .-% could be specified to still have a sufficient amount of polar polyethylene wax.
- Binding agents are present in small amounts in the thermal transfer ink, so in Thermal transfer ribbons usually used waxes, for example Paraffin wax, caranauba wax, montan wax, beeswax, japan wax, Candelilla wax as well as materials used as plastic binders, such as polyolefins with an average molecular weight of about 1,000 to 10,000, for example low molecular weight polyethylene, polypropylene or polybutylene and the same.
- plastic binders such as polyolefins with an average molecular weight of about 1,000 to 10,000, for example low molecular weight polyethylene, polypropylene or polybutylene and the same.
- plastic binders such as polyolefins with an average molecular weight of about 1,000 to 10,000, for example low molecular weight polyethylene, polypropylene or polybutylene and the same.
- plastic binders such as polyolefins with an average molecular weight of about 1,000 to 10,000, for example low molecular weight polyethylene, polyprop
- amorphous polymers examples include homo- and copolymers, styrene or their derivatives or substituted compounds thereof (e.g. styrene; Vinyl, toluene), acrylic acid esters, for example methyl acrylate, ethylene acrylate and butyl acrylate copolymers, especially polyester resins, by polycondensation saturated dibasic acid are available (for example phthalic acid, Phthalic anhydride), polycarbonates, polyamides, epoxy resins, polyurethanes, silicone resins, Phenolic resins, terpene resins, petroleum resins, hydrogenated petroleum resins, alkyd resins and Cellulose derivatives.
- styrene Vinyl, toluene
- acrylic acid esters for example methyl acrylate, ethylene acrylate and butyl acrylate copolymers
- polyester resins by polycondensation saturated dibasic acid are available (for example phthalic acid, Phthalic anhydride)
- An amorphous polyester resin with an MFI value (105 ° C / 2.16 kg) is preferred from about 1.3 to 2.3, especially from about 1.5 to 2.0 g / min and a glass transition temperature Tg of about 45 to 65 ° C, especially about 52 to 56 ° C, used.
- An amorphous polyester resin that meets these framework conditions and in particular is advantageously used is a polyester resin based on bisphenol A, such as the commercial product Setafix P 120 (distributed by Akzo Noble Resins B.V., Netherlands), which is characterized by the following characteristics: MFI value (105 ° C / 2.16 kg) of about 1.5 to 2.0 g / min, glass transition temperature Tg of 52 up to 56 ° C and acid number from 14 to 24 mg KOH / g, Mn value about 2,500 and Mw value about 12,000.
- a polyester resin of the trade name is also suitable Atlac T 500 (sold by ICI Specialty Chemicals, Great Britain).
- polar polyethylene wax is obtained either by oxidation of polyethylene wax or by oxidative degradation of plastic-like polyethylene. This creates a range of polar, emulsifiable polyethylene waxes.
- Hoechst waxes PED and the type designations 521 and 522 are particularly suitable. These belong to the series of more flexible emulsifiable polyethylene waxes, the melting point of which allows emulsification in an open vessel.
- a preferred dropping point of about 100 to 110 ° C, in particular about 102 to 108 ° C and very particularly preferably of about 102 to 106 ° C, measured according to DIN 51 801, is the preferred framework for the polar polyethylene waxes polar polyethylene wax, the following sizes are given: ball indentation hardness according to the test method DGF-M III-90 (57) of approx. 1 to 3 ⁇ 10 7 Pa (100 to 300 bar), a flow hardness of approx. 1 to 3 ⁇ 10 -7 Pa (100 up to 300 bar) and a viscosity, measured according to DIN 51 550 at a temperature of about 120 ° C, of about 50 to 700 mPas, in particular from about 100 to 500 mPas.
- the coloring of the thermal transfer color can be done by any Colorants are made. It can be pigments, especially soot, but also to solvent and / or binder-soluble colorants, such as the commercial product Basoprint, organic color pigments and various acco colorants (Cerces and Sudan dyes) act. Soot is considered in the context of the present invention particularly suitable.
- the thermal transfer ink preferably contains the colorant, in particular color pigment, in an amount of about 20 to 40 wt .-%.
- the thermal transfer color shows preferably a viscosity of about 500 to 3,000 mPas, measured with a Brookfield rotational viscometer at 140 ° C. In particular, the range of 600 to 1,500 mPas aimed for.
- the thickness of the thermal transfer ink or the ink layer is not critical. A thickness of approximately 1 to 5 g / m 2 application, in particular approximately 1 to 3 g / m 2 application, is preferred on the carrier.
- the type of carrier is also not critical here. It is preferably a film made of polyethylene terephthalate (PET) or a capacitor paper.
- PET polyethylene terephthalate
- the selection parameters are the highest possible tensile elongation values and thermal stability with small film thicknesses, for example in the range of approximately 1 to 6 ⁇ m.
- the PET films are available up to about 2.5 ⁇ m, capacitor paper up to about 6 ⁇ m.
- This back coating material preferably consists of paraffin, silicone, natural waxes, in particular carnauba wax, beeswax, ozocerite and paraffin wax or synthetic waxes, in particular acid waxes, ester waxes, partially saponified ester waxes and polyethylene waxes, glycols or polyglycols and / or surfactants.
- the range of 1.4 to 2.0 g / m 2 , in particular approximately 1.6 to 1.8 g / m 2 is very particularly preferred for the strength of the thermal transfer ink.
- the above-mentioned backside coating is optionally applied on the back in a thickness of about 0.01 to 1 g / m 2 , in particular about 0.05 to 0.10 g / m 2 .
- These layers can be formed in a variety of ways using customary application methods. This can be done, for example, by spraying or printing on a solution or dispersion, be it with water or an organic solvent, by application from the melt, which is particularly true for the thermal transfer layer, or by application by means of a doctor blade in the form of an aqueous suspension with finely divided therein material to be applied. Coating methods such as reverse roll and / or gravure coating have proven to be particularly advantageous for applying the thermal transfer layer.
- the particular advantages associated with the invention can be as follows represent:
- the invention surprisingly requires compared to DE 196 12 393 A1 no additional separating layer and comes with a total of two layers from, advantageously a back coating for the reasons mentioned is provided. It will not only be scratch-resistant but also achieved solvent-resistant prints on plastic labels, especially in Connection with so-called barcode labels.
- amorphous Polymers with an Mw of more than 10,000.
- the polar polyethylene wax used according to the invention has a functional effect Working together in such a way that the essential properties of a such a tape must not be impaired, but that in printing transferred thermal transfer ink a good one, especially on plastic labels Adhesion and good abrasion and scratch resistance shows and quickly and precisely is transmitted.
- plastic labels such as. made of polyethylene, polypropylene, vinyl chloride, for coated PET films and glossy papers. In doing so, these favorable results are in the upper energy level of the thermal transfer printer.
- the polyethylene waxes are used apparently to convey a good release function and thus make the Adhesion to the printed film. They mediate because of their good gliding behavior the particularly favorable scratch resistance of the printouts.
- a material of the following recipe is applied to a conventional carrier made of polyethylene terephthalate with a thickness of about 4.5 ⁇ m to form a thermal transfer color layer: Parts by weight Polyester resin based on a bisphenol A (trade name: Setafix P 120, sold by Akzo Nobel Resins BV) 60 Polar polyethylene wax (trade name: PED 521, sold by Hoechst AG) 7.5 Polar polyethylene (trade name: P 522, sold by Hoechst AG) 7.5 Hoechst AG) soot 25 total 100
- the properties of the above binder components are as follows: PED 521 Dropping point: 105 ° C (DIN 51 801), acid number: 17 mg KOH / g (DIN 53 402), saponification number: 35 mg KOH / g (DIN 53 401), density: 0.95 g / cm 3 at 20 ° C (DIN 53 479), ball pressure hardness: 1 to 3 ⁇ 10 7 Pa (100-300 bar) (DGF-M III-90 (57)), flow hardness: 1 to 3 ⁇ 10 7 Pa (100-300 bar) and viscosity 100-500 mPas at 120 ° C (DIN 51 550).
- PED 522 Dropping point: 103 ° C (DIN 51 801), acid number: 25 mg KOH / g (DIN 53 402), saponification number: 55 mg KOH / g (DIN 53 401), density: 0.96 g / cm 3 at 20 ° C (DIN 53 479), ball pressure hardness: 1 to 3 ⁇ 10 7 Pa (100-300 bar) (DGF-M III-90 (57)), flow hardness: 1 to 3 ⁇ 10 7 Pa (100-300 bar) and viscosity 100-500 mPas at 120 ° C (DIN 51 550).
- the above material is reversed in a solvent dispersion about 20% (toluene / isopropanol: 80:20) in a dry strength of about 1.5 ⁇ m applied.
- the solvent is evaporated off by passing it over hot air at a temperature of around 100 ° C.
- the material obtained proved when printing in the high energy level of a thermal transfer printer as scratch and solvent resistant.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Description
| Gew.-Teile | |
| Polyesterharz auf der Basis eines Bisphenols A (Handelsbezeichnung: Setafix P 120, vertrieben von der Firma Akzo Nobel Resins B.V.) | 60 |
| Polares Polyethylenwachs (Handelsbezeichnung: PED 521, vertrieben von der Firma Hoechst AG) | 7,5 |
| Polares Polyethylen (Handelsbezeichnung: P 522, vertrieben von der Firma Hoechst AG) | 7,5 |
| Hoechst AG) | |
| Ruß | 25 |
| Summe | 100 |
| PED 521 | Tropfpunkt: 105°C (DIN 51 801), Säurezahl: 17 mg KOH/g (DIN 53 402), Verseifungszahl: 35 mg KOH/g (DIN 53 401), Dichte: 0,95 g/cm3 bei 20°C (DIN 53 479), Kugeldruckhärte: 1 bis 3·107 Pa (100-300 bar) (DGF-M III-90 (57)), Fließhärte: 1 bis 3·107 Pa (100-300 bar) und Viskosität 100-500 mPas bei 120°C (DIN 51 550). |
| PED 522 | Tropfpunkt: 103°C (DIN 51 801), Säurezahl: 25 mg KOH/g (DIN 53 402), Verseifungszahl: 55 mg KOH/g (DIN 53 401), Dichte: 0,96 g/cm3 bei 20°C (DIN 53 479), Kugeldruckhärte: 1 bis 3·107 Pa (100-300 bar) (DGF-M III-90 (57)), Fließhärte: 1 bis 3·107 Pa (100-300 bar) und Viskosität 100-500 mPas bei 120°C (DIN 51 550). |
Claims (11)
- Thermotransferband mit einem Träger, mit einer auf einer Seite des Trägers ausgebildeten Thermotransferfarbe und mit gegebenenfalls weiteren Schichten, wobei die Thermotransferfarbe neben einem Farbmittel ein amorphes Polymer und ein Wachs enthält, dadurch gekennzeichnet, daß die Thermotransferfarbe als Bindemittel ein polares Polyethylenwachs und ein amorphes Polymer, das ein Gewichtsmittel der Molmasse Mw von mehr als etwa 10.000 und ein Zahlenmittel der Molmasse Mn von weniger als etwa 6.000 aufweist, enthält.
- Thermotransferband nach Anspruch 1, dadurch gekennzeichnet, daß das amorphe Polymer ein Gewichtsmittel der Molmasse Mw von 10.000 bis etwa 15.000 und ein Zahlenmittel der Molmasse Mn von weniger als etwa 5.000, insbesondere etwa 2.000 bis 3.000, aufweist.
- Thermotransferband nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auf 1 Gew.-Teil polares Polyethylenwachs etwa 3 bis 5 Gew.-Teile, insbesondere etwa 4 Gew.Teile, amorphes Polymer entfallen.
- Thermotransferband nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das amorphe Polymer ein amorphes Polyesterharz, insbesondere auf der Basis eines Bisphenols A, darstellt.
- Thermotransferband nach Anspruch 3, dadurch gekennzeichnet, daß das polare Polyethylenwachs einen Tropfpunkt von etwa 100 bis 110°C, insbesondere etwa 102 bis 108°C, aufweist.
- Thermotransferband nach Anspruch 5, dadurch gekennzeichnet, daß der Tropfpunkt etwa 102 bis 106°C beträgt.
- Thermotransferband nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das polare Polyethylenwachs eine Kugeldruckhärte nach der Prüfmethode DGF-M III-90 (57) von etwa 1 bis 3·107 Pa (100 bis 300 bar) eine Fließhärte von etwa 1 bis 3·107 Pa (100 bis 300 bar) und eine Viskosität, gemessen nach DIN 51 550 bei einer Temperatur von etwa 120°C, von etwa 50 bis 700 mPas, insbesondere von etwa 100 bis 500 mPas, aufweist.
- Thermotransferband nach mindestens einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß das amorphe Polyesterharz einen MFI-Wert (105°C/2,16 kg) von etwa 1,3 bis 2,3, insbesondere von etwa 1,5 bis 2,0 g/ 10 min und eine Glasumwandlungstemperatur Tg von etwa 45 bis 65°C, insbesondere etwa 52 bis 56°C, aufweist.
- Thermotransferband nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Thermotransferfarbe eine Stärke von etwa 1 bis 5 g/m2, insbesondere etwa 1 bis 3 g/m2, aufweist.
- Thermotransferband nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Träger aus Polyethylenterephthalat besteht.
- Thermotransferband nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß auf der Rückseite des Trägers eine Schicht aus einem Wachs oder einem wachsartigen Material in einer Stärke von etwa 0,01 bis 1 g/m2, insbesondere von etwa 0,05 bis 0,10 g/m2, ausgebildet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19820778A DE19820778C2 (de) | 1998-05-08 | 1998-05-08 | Thermotransferband |
| DE19820778 | 1998-05-08 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0955182A2 EP0955182A2 (de) | 1999-11-10 |
| EP0955182A3 EP0955182A3 (de) | 2000-09-06 |
| EP0955182B1 true EP0955182B1 (de) | 2003-08-27 |
Family
ID=7867207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99108563A Expired - Lifetime EP0955182B1 (de) | 1998-05-08 | 1999-05-05 | Thermotransferband |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6461721B1 (de) |
| EP (1) | EP0955182B1 (de) |
| CA (1) | CA2271434A1 (de) |
| DE (2) | DE19820778C2 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10152849A1 (de) * | 2001-10-29 | 2003-05-28 | Emtec Magnetics Gmbh | Beschichtung eines Thermotransfer- und/oder Thermosublimationsproduktes, Verfahren zu dessen Herstellung sowie dessen Verwendung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3941596A (en) * | 1962-10-24 | 1976-03-02 | E. I. Du Pont De Nemours And Company | Thermographic processes using polymer layer capable of existing in metastable state |
| DE3328990C2 (de) * | 1983-08-11 | 1985-12-12 | Pelikan Ag, 3000 Hannover | Thermofarbband sowie Verfahren zu dessen Herstellung |
| GB2176903B (en) * | 1985-04-24 | 1989-08-02 | Fuji Xerox Co Ltd | Image recording material for heat sensitive hot-melt transfer recording. |
| GB2178553B (en) * | 1985-07-29 | 1990-01-04 | Canon Kk | Thermal transfer material |
| US4762734A (en) * | 1986-11-24 | 1988-08-09 | Xerox Corporation | Processes for thermal transfer ink donor films |
| EP0351794A3 (de) * | 1988-07-19 | 1991-03-13 | Nitto Denko Corporation | Wärmefixierbarer Farbstoff, Musterschicht mit diesem Farbstoff und Verfahren zur Herstellung von Mustern |
-
1998
- 1998-05-08 DE DE19820778A patent/DE19820778C2/de not_active Expired - Fee Related
-
1999
- 1999-05-05 DE DE59906727T patent/DE59906727D1/de not_active Expired - Lifetime
- 1999-05-05 EP EP99108563A patent/EP0955182B1/de not_active Expired - Lifetime
- 1999-05-06 US US09/306,366 patent/US6461721B1/en not_active Expired - Fee Related
- 1999-05-07 CA CA002271434A patent/CA2271434A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0955182A2 (de) | 1999-11-10 |
| DE59906727D1 (de) | 2003-10-02 |
| US6461721B1 (en) | 2002-10-08 |
| DE19820778C2 (de) | 2003-02-20 |
| DE19820778A1 (de) | 1999-11-11 |
| CA2271434A1 (en) | 1999-11-08 |
| EP0955182A3 (de) | 2000-09-06 |
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