CN217373998U - Colorful color-changing film and colorful hot stamping film - Google Patents

Abstract

A colorful color-changing film and a colorful hot stamping film. The utility model discloses a colorful color-changing film, be in including base membrane layer, setting organic chromatograph, the setting of base membrane layer one side surface are in organic chromatograph keeps away from the color-changing layer of base membrane layer one side surface. The utility model also discloses a colorful thermoprint membrane, be in including base film layer, setting organic chromatograph, the setting on base film layer one side surface are in organic chromatograph keeps away from the discoloration layer on base film layer one side surface, organic chromatograph with be equipped with the micro-nano structure on the discoloration layer. The utility model discloses a colorful color-changing membrane is through setting up the organic chromatograph between discoloring layer and basic rete, because the organic chromatograph texture is softer, can act as a substrate when the hot pressing for colorful color-changing membrane is whole can to accomplish the hot pressing, and has improved the impression degree of depth, has guaranteed colored purity.

Description

Colorful color-changing film and colorful hot stamping film

Technical Field

The utility model relates to a color-changing membrane technical field especially relates to a colorful color-changing membrane and colorful thermoprint membrane.

Background

The hot stamping film transfers the pattern texture to the surface of the material in a heating and pressurizing mode, and is widely applied to the fields of packaging, anti-counterfeiting and the like. In recent years, with the rapid development of optical technology, the plate making precision is greatly improved, and the preparation of a micro-nano structure is realized at present, so that the texture of a hot stamping film printed by the hot stamping film is finer, the patterns are more diversified, the decorative aesthetic feeling is further improved, and the effects of naked eye 3D, colorful color change and the like can be presented.

The color-changing film is used as an anti-counterfeiting technology, and is rapidly developed along with the progress of science and technology, and the film can show different colors along with the change of visual angles, namely, the color is changed from gold to green or from green to blue, and the like. The existing preparation technology of the color-changing film mainly comprises a sputtering medium or coating color-changing ink, wherein the sputtering medium is to coat an organic layer on a base film and sputter a plurality of dielectric layers, and the color-changing effect is achieved through the difference of refractive indexes. The color-changing effect can be achieved by coating the color-changing ink, and the color-changing effect is achieved through the difference of refractive indexes among molecules by utilizing the principle of molecular self-assembly.

However, the temperature resistance of the color-changing ink is insufficient, so that the conventional color-changing film can achieve the color-changing effect, but the structure cannot be embossed, namely, the texture and the patterning cannot be realized. The process for sputtering the dielectric layer has high material rigidity and is not easy to deform, even if the micro-nano structure is included, the micro-nano structure layer is generally prepared in the film, the size of the imprinted structure is limited, and the color after imprinting is impure, so that the application of the color-changing film in the fields of anti-counterfeiting and decoration is greatly limited.

The foregoing description is provided for general background information and is not admitted to be prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a colorful color-changing membrane that impression degree of depth is big.

The utility model provides a colorful color-changing film, be in including base membrane layer, setting organic chromatograph, the setting of base membrane layer side surface are in organic chromatograph keeps away from the color-changing layer of base membrane layer side surface.

Further, the organic color layer has a thickness of 0.1 to 10 μm.

Further, the color-changing layer is a color-changing ink layer.

Further, the color changing layer comprises a first film layer, an organic layer and a second film layer, wherein the first film layer is arranged on the surface of one side of the organic color layer, which is far away from the base film layer, of the organic color layer, the organic layer is arranged on the surface of one side of the organic color layer, and the second film layer is arranged on the surface of one side of the organic layer, which is far away from the first film layer.

Further, the color changing layer further comprises a second organic layer and a third film layer, wherein the second organic layer is arranged on the surface of one side, far away from the organic layer, of the second film layer, and the third film layer is arranged on the surface of one side, far away from the second film layer, of the second organic layer.

Further, the organic color layer is made of colored resin, the organic layer is made of resin, and the first film layer and the second film layer are transparent films or semi-transparent reflective films.

Further, the thicknesses of the first film layer and the second film layer are smaller than the thicknesses of the organic layer and the organic color layer.

Further, the transparent film layer is made of one of titanium dioxide and zinc sulfide; the semi-transparent semi-reflective film layer is made of one of metal chromium, metal nickel or metal aluminum.

The utility model also provides a colorful thermoprint membrane, be in including base film layer, setting organic chromatograph, the setting on base film layer one side surface are in organic chromatograph keeps away from the discoloration layer, the setting on base film layer one side surface are in the discoloration layer is kept away from the hot melt adhesive layer on base film layer one side surface, organic chromatograph with be equipped with the micro-nano structure on the discoloration layer.

Further, the thickness of the micro-nano structure is smaller than or equal to the sum of the thicknesses of the organic color layer and the color changing layer.

The utility model provides a colorful color-changing membrane is through setting up the organic chromatograph between discoloring layer and basic rete, because the organic chromatograph texture is softer, can act as a substrate when the hot pressing for colorful color-changing membrane is whole can to accomplish the hot pressing, and has improved the impression degree of depth, has guaranteed colored purity. The utility model provides a colorful thermoprint membrane can make up more special pattern effect through the design of receiving the nanostructure, gives colorful color-changing membrane manifold texture structure, and application scope is wide, has expanded color-changing membrane in the application of anti-fake and decoration field.

Drawings

Fig. 1 is a schematic structural view of a color changing film according to a first embodiment of the present invention;

FIG. 2 is a schematic structural view of a first embodiment of the multi-color hot stamping film of the present invention;

FIG. 3 is a schematic view of a second embodiment of the color-changing film of the present invention;

FIG. 4 is a schematic structural view of a second embodiment of the multi-color hot stamping film of the present invention;

fig. 5 is a schematic structural view of a color changing film according to a third embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

First embodiment

Referring to fig. 1 to 2, a first embodiment of the present invention provides a colorful color-changing film, which includes a base film layer 1, a release layer 2 disposed on a side surface of the base film layer 1, an organic color layer 3 disposed on a side surface of the release layer 2 away from the base film layer 1, a color-changing layer 4 disposed on a side surface of the release layer 2 away from the organic color layer 3, and a hot-melt adhesive layer 5 disposed on a side surface of the color-changing layer 4 away from the organic color layer 3. Referring to fig. 1, the thickness ratios of the layers in fig. 1 are not described according to actual ratios because the thickness dimensions of the layers are different greatly.

The base film layer 1 is one of polyester, polyethylene, polyvinyl chloride and polypropylene, and has a thickness of 5-200 μm.

The thickness of the release layer 2 is 1 μm, and the release layer is cured by thermal curing or UV radiation. The release layer 2 is used for facilitating the stripping of the base film layer 1 after hot stamping. Therefore, the release layer 2 after peeling the base film layer 1 can be positioned at the outermost layer of the whole colorful color-changing film, and has the function of protecting the organic color layer 3; of course, the release layer 2 may be peeled off together when the base film layer 1 is peeled off, if necessary.

The organic color layer 3 is made of resin and has a thickness of 0.1-10 μm, and pigment is added during the preparation process to make the organic color layer 3 colored. The organic color layer 3 is provided with at least 1 color region, and when the number of the color regions is 1, the color regions are full monochrome, such as black, deep purple, deep blue, and the like. When the number of the color areas is multiple, the different color areas are adjacent or spaced, so that the different color areas are correspondingly matched with the needed patterns of the product.

The thickness of the hot melt adhesive layer 5 is 1-4 μm, and the hot melt adhesive layer is used for being combined with a hot stamped object so as to enable the colorful color-changing film to become a colorful hot stamping film.

The color changing layer 4 comprises a first film layer 41 arranged on one side of the organic color layer 3 far away from the release layer 2, an organic layer 42 arranged on one side of the first film layer 41 far away from the organic color layer 3, and a second film layer 43 arranged on one side of the organic layer 42 far away from the first film layer 41.

The structure formed by the organic color layer 3, the first film layer 41, the organic layer 42 and the second film layer 43 forms a slab waveguide resonance structure on the basis of the slab waveguide resonance principle, and the resonance frequency can move when the observation angle is changed, so that the multicolor color-changing film has a color-changing effect, and the expression of colors is realized. Namely, standing wave resonance occurs when the incident wavelength changes at different observation angles, so that the color is changed, and the effect that the color changes along with the change of the observation angle is achieved.

The first film 41 and the second film 43 are transparent films or semi-transparent and semi-reflective films, the transparent films are made of one of titanium dioxide or zinc sulfide, a vacuum sputtering process is adopted, the semi-transparent and semi-reflective films are made of one of chromium, nickel or aluminum, the vacuum sputtering process is also adopted, and the thicknesses of the transparent films and the semi-transparent and semi-reflective films are both 10-100 nm. When the first film 41 and the second film 42 are both transparent films, the multicolor color-changing film finally presents a semitransparent visual effect. When at least one of the first film 41 and the second film 42 is a semi-transparent and semi-reflective film, the colorful color-changing film finally presents an opaque visual effect.

The organic layer 42 is located between the first film 41 and the second film 43, and is made of resin with a thickness of 0.1-20 μm. The organic layer 42 and the organic color layer 3 both contain a solvent, and the solvent is one of ethyl acetate, butyl acetate and n-propyl acetate. The organic color layer 3 and the organic layer 42 are both manufactured by adopting a nano coating process.

The organic color layer 3, the first film layer 41, the organic layer 42 and the second film layer 43 can be made of different materials or/and have different thicknesses to realize different color expressions. As the thickness increases, the longer the wavelength at which resonance is formed, and as the observation angle (incident angle) changes, the color that appears changes.

Referring to fig. 2, the present embodiment further provides a multicolor hot stamping film, which is prepared by the above multicolor color-changing film through a hot stamping process, wherein a plurality of grooves are formed on the organic color layer 3 and the color-changing layer 4 after the hot stamping, and the grooves jointly form a micro-nano structure 6. The thickness of the micro-nano structure 6 is less than or equal to the sum of the thicknesses of the organic color layer 3 and the color changing layer 4. The cross section of the groove forming the micro-nano structure 6 can be one of an arc shape, a triangle shape, a square shape, a rectangle shape, a trapezoid shape or an irregular shape, or a combination of more than two arbitrary shapes.

Because the thicknesses of the first film layer 41 and the second film layer 43 are both smaller than the thicknesses of the organic layer 42 and the organic color layer 3, and the organic color layer 3 is made of soft resin material, the whole colorful color-changing film can be hot-pressed. Except the base film layer 1, all the other film layers are subjected to compression deformation, so that the imprinting depth is improved, and the color purity is ensured.

In this embodiment, the organic color layer 3 has a thickness of 3 μm, and the first film layer 41 is a metal chromium film layer in the semi-transparent semi-emissive film layer and has a thickness of 50 nm. The organic layer 42 has a thickness of 2 μm, and the second film layer 43 is an aluminum-plated layer having a thickness of 100 nm. When the angle between the color changing film and the color changing film is 0 degree, the color changing film is light green. When the angle between the colorful color-changing film and the colorful color-changing film is 80 degrees, the colorful color-changing film is golden yellow.

The micro-nano structure 6 in this embodiment is an array square structure with the same depth, in this embodiment, the side length of each groove forming the micro-nano structure 6 is 2 μm, and the array depth is 4 μm, as shown in fig. 2. The colorful hot stamping film in the embodiment has a good optical effect and a good color changing effect through the design of the micro-nano structure, and the visual and attractive effect of the hot stamping film is greatly improved. Can combine more special pattern effects, endow the colorful color-changing film with various texture structures, has wide application range, and expands the application of the color-changing film in the fields of anti-counterfeiting and decoration.

Second embodiment

Referring to fig. 3, the color change film of the present embodiment is different from the first embodiment in that the color change layer 4' further includes a second organic layer 44' and a third layer 45', the second organic layer 44' is disposed on a side of the second layer 43' away from the organic layer 42', and the third layer 45' is disposed on a side of the second organic layer 44' away from the second layer 43 '. The second organic layer 44 'can be prepared in a manner similar to that of the organic layer 42', and the third film 45 'can be prepared in a manner similar to that of the first film 41'.

The present embodiment also includes a base film layer 1', a release layer 2' disposed on a surface of one side of the base film layer 1', an organic color layer 3' disposed on a surface of one side of the release layer 2' far from the base film layer 1', and a hot melt adhesive layer 5' disposed on a surface of one side of the color changing layer 4' far from the organic color layer 3 '.

In this embodiment, the first film layer 41' is a zinc sulfide layer in the transparent film layer, the second film layer 43' is a magnesium fluoride layer in the transparent film layer, and the third film layer 45' is also a zinc sulfide layer. The organic color layer 3' is made of resin and has a thickness of 2 μm, and the organic layer 42' and the second organic layer 44' are made of resin and have a thickness of 1 μm. The thickness of the first film layer 41 'is 80nm, the thickness of the second film layer 43' is 50nm, and the thickness of the third film layer 45 is 30 nm. When the angle between the color changing film and the color changing film is 0 degree, the color changing film is light purple. When the angle between the colorful color-changing film and the colorful color-changing film is 45 degrees, the colorful color-changing film is dark blue. When the angle between the colorful color-changing film and the colorful color-changing film is 80 degrees, the colorful color-changing film is light yellow.

The difference between the multicolor hot stamping film provided by the embodiment and the first embodiment is that the grooves forming the micro-nano structure 6' have different cross-sectional shapes and sizes, and can be combined into a special pattern effect as required, as shown in fig. 4.

After the array is stamped, the color-changing film still has a good color-changing effect, and the visual attractiveness of the color-changing film is greatly improved.

Third embodiment

Referring to fig. 5, the difference between the present embodiment and the foregoing embodiments is that the first film 41 "is a zinc sulfide layer in the transparent film, and the second film 43" is a magnesium fluoride layer in the transparent film. The organic color layer 3 "is made of resin and has a thickness of 3 μm, and the organic layer 42" is made of resin and has a thickness of 2 μm. The first film 41 "has a thickness of 50nm, and the second film 43" has a thickness of 100 nm. When the angle between the color changing film and the color changing film is 0 degree, the color changing film is light green. When the angle between the colorful color-changing film and the colorful color-changing film is 80 degrees, the colorful color-changing film is golden yellow.

The embodiment includes base membrane layer 1 "equally, sets up from type layer 2" of base membrane layer 1 "one side surface, sets up and keeps away from organic chromatograph 3" on base membrane layer 1 "one side surface and set up and keep away from organic chromatograph 3" one side surface's hot melt adhesive layer 5 at discoloration layer 4 "from type layer 2".

The difference between the multicolor hot stamping film provided by the embodiment and the first embodiment is that when the micro-nano structure is prepared, a 3D transmission structure is hot-stamped by a printing plate subjected to micro-nano etching by a photoetching machine. This embodiment has 3D transmission visual effect when keeping original color change effect after impression 3D transmission structure.

Fourth embodiment

The present embodiment provides a difference between the multicolor discoloration film and the above embodiments in that the discoloration layer is a discoloration ink layer.

Fifth embodiment

The difference between the colorful hot stamping film provided by the embodiment and the embodiment is that when the micro-nano structure is prepared, a laser structure is hot-stamped by a stamping plate subjected to micro-nano etching by a photoetching machine. This embodiment is after the radium-shine structure of impression, when keeping original discoloration effect, has radium-shine visual effect.

In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will be understood that when an element such as a layer, region or substrate is referred to as being "formed on," "disposed on" or "located on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly formed on" or "directly disposed on" another element, there are no intervening elements present.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the sake of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.

As used herein, the ordinal adjectives "first", "second", etc., used to describe an element are merely to distinguish between similar elements and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

As used herein, the meaning of "a plurality" or "a plurality" is two or more unless otherwise specified.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The colorful color-changing film is characterized by comprising a base film layer, an organic color layer arranged on the surface of one side of the base film layer, and a color-changing layer arranged on the surface of one side, far away from the base film layer, of the organic color layer.

2. A multicolor discoloration film according to claim 1, wherein said organic color layer has a thickness of 0.1 to 10 μm.

3. A multicolor color shifting film according to claim 1, wherein said color shifting layer is a color shifting ink layer.

4. A multicolor discoloration film according to claim 1, wherein said discoloration layer comprises a first film layer provided on a side surface of said organic color layer remote from said base film layer, an organic layer provided on a side surface of said first film layer remote from said organic color layer, and a second film layer provided on a side surface of said organic layer remote from said first film layer.

5. A multicolor shading film according to claim 4, wherein said shading layer further comprises a second organic layer disposed on a surface of said second film layer remote from said organic layer and a third film layer disposed on a surface of said second organic layer remote from said second film layer.

6. A multicolor discoloration film according to claim 4, wherein said organic color layer is made of a colored resin, said organic layer is made of a resin, and said first film layer and said second film layer are transparent films or semi-transparent reflective films.

7. A multicolor shading film according to claim 6, wherein the thickness of each of said first and second film layers is smaller than the thickness of said organic layer or said organic color layer.

8. A multicolor discoloration film according to claim 6, wherein said transparent film is made of one of titanium dioxide and zinc sulfide; the semi-transparent semi-reflective film layer is made of one of metal chromium, metal nickel or metal aluminum.

9. The utility model provides a colorful thermoprint membrane, its characterized in that is in including base film layer, setting organic chromatograph, the setting of base film layer one side surface are in organic chromatograph keeps away from the discoloration layer, the setting of base film layer one side surface are in the discoloration layer is kept away from the hot melt adhesive layer of base film layer one side surface, organic chromatograph with be equipped with the micro-nano structure on the discoloration layer.

10. The multicolor hot stamping film according to claim 9, wherein the thickness of the micro-nano structure is less than or equal to the sum of the thicknesses of the organic color layer and the color-changing layer.

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