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Variable color thermoprinting membrane and making method thereof

A manufacturing method and bronzing film technology, which are applied in the directions of copying/marking methods, chemical instruments and methods, printing, etc., can solve the problems of complex manufacturing process, expensive spacer layer process and high cost, and achieve enhanced visual recognition effect and efficient processing method. , the effect of fewer production processes

Active Publication Date: 2014-07-16
SUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the total number of film layers of the color-changing ink is large, the cost is high, and there are many procedures for peeling and breaking
[0005] On this basis, CN102463758A proposes holographic anti-counterfeiting hot stamping film, by printing an ink layer on the information recording layer (the ink is made of visible color ink, photorefractive ink, fluorescent ink, luminous ink, thermochromic ink, infrared ink Composed of one or more mixtures of aromatic inks), although the anti-counterfeiting effect is enhanced and the appearance design is more diverse, the use of inks cannot be avoided
Patent CN100526092C proposes an optically variable element composed of thin film sequences, which has at least one spacer layer to produce color shift through interference. Since the spacer layer is made of inorganic medium material, the thickness of the spacer layer is made by printing roller or multiple roller coating method. However, it is very difficult to coat spacer layers with different thicknesses (about 100nm) by this coating method, and requires high process technology costs; in order to improve the anti-counterfeiting security of the optical variable element, by Provide a transparent layer and emboss diffractive structures on the transparent layer to produce additional diffractive effects
Therefore, the process of coating spacer layers with different thicknesses described in the patent CN100526092C is expensive, and the coating process is not easy to produce pixelated images; meanwhile, diffractive optical anti-counterfeiting is realized by embossing diffractive structures on an additional transparent layer
Therefore, in view of the shortcomings of the existing color-changing hot stamping film that the production process is complicated and multiple color-changing regions cannot be formed on the same hot stamping film, the present invention provides a new solution for the color-changing hot stamping film

Method used

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  • Variable color thermoprinting membrane and making method thereof
  • Variable color thermoprinting membrane and making method thereof
  • Variable color thermoprinting membrane and making method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment one: the hot stamping film of multiple discoloration areas is arranged on the same substrate

[0047] The color-changing hot stamping film described in this embodiment is as follows: figure 1 As shown, it includes a base film 10 , a release layer 11 , a semi-transparent and semi-reflective metal layer 12 , an information medium layer 13 , a full-inversion metal layer 14 and a hot melt adhesive 15 . Wherein the information medium layer 13 is a plastically variable organic medium coating, and its two opposite surfaces are respectively covered by the semi-transparent and semi-reflective metal layer 12 and the full-inversion metal layer 14, and the surface intersecting with the full-inversion metal layer 14 is set There are various steps with different heights (four kinds of steps 131, 132, 133, 134 are shown in the figure), and the surface intersecting with the transflective metal layer 12 is a plane. The semi-transparent and semi-reflective metal layer 12, the...

Embodiment 2

[0051] The color-changing hot stamping film described in this embodiment is as attached Figure 5 As shown, it includes a base film 20 , a release layer 21 , an information medium layer 23 , a semi-transparent and semi-reflective metal layer 22 , a full-reflective metal layer 24 and a hot melt adhesive 25 . Compared with Embodiment 1, in this embodiment, the steps of the information medium layer 23 are formed on the surface close to the base film 20 , that is, these steps are covered by the transflective metal layer 22 . However, due to the influence of the production sequence between the various layers of films, it is necessary to first form a layer of information medium layer 23 on the release film 21, then press out the step structure, and then cover the semi-transparent and semi-reflective metal layer 22 on the step, so In this embodiment, the information medium layer 23 remains between the semi-transparent and semi-reflective metal layer 22 and the release layer 21 . Oth...

Embodiment 3

[0053] The color-changing hot stamping film described in this embodiment is as attached Image 6 As shown, it includes a base film 30 , a release layer 31 , an information medium layer 33 , a semi-transparent and semi-reflective metal layer 32 , a full-reflective metal layer 34 and a hot melt adhesive 35 . In this embodiment, the steps of the information medium layer 23 are made inside and covered by the transflective metal layer 32 at the same time. During production, it is only necessary to set the height of the information medium layer 23 coated for the first time to be greater than the maximum height of the indenter on the basis of the second embodiment, and other manufacturing processes and steps are the same as those of the second embodiment. Let me repeat.

[0054] A situation that is easily expanded by this embodiment is that the full-inversion metal layer 34 can be covered on the step. At this time, the order of making is: first nano-coating the release layer 31, and...

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Abstract

The invention relates to a variable color thermoprinting membrane and a making method thereof. The variable color thermoprinting membrane includes a base membrane, a release layer, a transflective metal layer, an information medium layer, a total reflecting metal layer and a hot melt adhesive layer, the information medium layer is a yieldable organic medium coating, steps with different heights are arranged on the at least one surface of the information medium layer or in the information medium layer, and the height of each of the steps corresponds to the Fabri-Perot cavity of a color. The above Fabri-Perot cavities enable a plurality of variable color zones, variable color figures and characters to be formed on a same hot stamping membrane, can realize the change of the color effect with the viewing angle under different polarization, and the color of the novel thermoprinting membrane changes. The thermoprinting membrane is made in a roll-to-roll manner, a heat evaporation coating partially substitutes a vacuum sputter coating, the organic medium coating is made in an efficient nano-coating manner, and steps and a micro-nano structure are obtained through an impression means, and the method is simple and efficient, and is suitable for wide format production.

Description

technical field [0001] The invention relates to a novel color-changing hot stamping film and a manufacturing method thereof, in particular to a hot stamping film having both discoloration and polarization anti-counterfeiting properties. Background technique [0002] The hot stamping film can use heat and pressure to transfer the pattern or text to the surface of the hot stamping material, forming a gorgeous pattern on the surface of the product. Ordinary hot-stamping foil is mainly composed of five parts: base film, release layer (peeling layer), color layer, reflective layer (plating layer) and hot-melt adhesive layer. The base film generally adopts a biaxially stretched polyester film with a thickness of 12μm-25μm. The main function is to support the coatings attached to it, which is convenient for continuous hot stamping during processing; It has good peeling performance, and after hot stamping, the color material, aluminum and glue layer can be quickly separated from th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/382B32B15/04B32B33/00B32B7/12
Inventor 叶燕陈林森朱昊苏楼益民周云刘艳花申溯魏国军
Owner SUZHOU UNIV
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