CN216610682U

CN216610682U - Transparent medium color-changing hot stamping film

Info

Publication number: CN216610682U
Application number: CN202122798268.2U
Authority: CN
Inventors: 刘海龙; 林桂礼; 李小军; 徐磊松; 张瑞标
Original assignee: Shenzhen Kun Hong Technology Co ltd
Current assignee: Shenzhen Kun Hong Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-05-27
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a transparent medium color-changing hot stamping film which comprises an inorganic polymer film layer, a release layer, a wear-resistant layer, an imaging layer, a transparent medium layer, a protective layer and a UV (ultraviolet) glue layer which are sequentially stacked, wherein one surface of the imaging layer is provided with a holographic image micro-nano structure. The transparent medium color-changing hot stamping film adopting the technical scheme of the utility model has the advantages of high hot stamping speed, cost saving, capability of presenting colorful and gorgeous patterns or decorative patterns under illumination, and visual novelty and impact force.

Description

Transparent medium color-changing hot stamping film

Technical Field

The utility model relates to the technical field of cold stamping films, in particular to a color-changing hot stamping film with a transparent medium.

Background

The hot stamping film is widely applied to the field of packaging, and compared with the traditional printing technology, the hot stamping film is gorgeous in color, dynamic and has certain anti-counterfeiting strength. The back of the hot stamping film is provided with a back glue layer which is bonded with the object, and after the back glue layer is bonded and fixed with the object, the PET inorganic polymer film layer on the front surface of the hot stamping film is peeled off, so that the imaging layer provided with the anti-counterfeiting pattern can be exposed. The existing hot stamping film is generally provided with a metal reflecting layer to provide a bright effect, and although the existing hot stamping film can have good color display, the color is single, different colors can not be changed, and the problem that the pattern display effect of a forming layer is not obvious exists.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a transparent medium color-changing hot stamping film which can change different colors under light and has visual novelty and impact force.

In order to achieve the purpose, the transparent medium color-changing hot stamping film provided by the utility model comprises an inorganic polymer film layer, a release layer, a wear-resistant layer, an imaging layer, a transparent medium layer, a protective layer and a UV (ultraviolet) adhesive layer which are sequentially stacked, wherein one surface of the imaging layer is provided with a holographic image micro-nano structure.

Preferably, the transparent medium layer is a photochromic material.

Preferably, the transparent dielectric layer material is zinc sulfide.

Preferably, the material of the wear-resistant layer is acrylic varnish or organic silicon varnish.

Preferably, the material of the protective layer is thermoplastic resin or crosslinking system resin.

Preferably, the surface of the wear-resistant layer facing away from the imaging layer is provided with a nanoparticle layer or a polymer resin layer.

Preferably, the imaging layer is made of resin material cured by ultraviolet irradiation or molded.

The transparent medium color-changing hot stamping film provided by the technical scheme of the utility model is suitable for a cold stamping process and can completely replace the traditional hot stamping process. The transparent medium color-changing hot stamping film is molded on the imaging layer to form the holographic pattern layer, so that the holographic pattern layer can be transferred at normal temperature, heating is not required, the processing cost is low, a metal hot stamping plate is not required to be manufactured, a precoated photosensitive plate (PS plate) is adopted, the plate making period is short, and the cost is low. The metal reflecting layer is arranged as the transparent medium layer, so that the shielding of the imaging layer can be weakened, colorful and gorgeous patterns can be presented under illumination, and the life and the environment of people are beautified.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of a color-changing hot stamping film for transparent media according to the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the color-changing hot stamping film for transparent media of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Transparent medium color-changing hot stamping film	5	Transparent dielectric layer
1	Inorganic polymer film layer	6	Protective layer
				2	Release layer	7	UV adhesive layer
3	Wear resistant layer	8	Two-dimensional code label
				4	Imaging layer

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a transparent medium color-changing hot stamping film. Referring to fig. 1 to 2, in the embodiment of the present invention, the transparent medium color-changing hot stamping film 10 includes an inorganic polymer film layer 1, a release layer 2, an abrasion-resistant layer 3, an imaging layer 4, a transparent medium layer 5, a protective layer 6, and a UV glue layer 7, which are sequentially stacked, and one surface of the imaging layer 4 has a holographic image micro-nano structure.

The inorganic polymer film layer 1 generally adopts a polyethylene terephthalate (PET) inorganic polymer film layer 1, the PET film takes polyethylene terephthalate as a raw material, and has good mechanical property, impact strength 3-5 times that of other films and good folding resistance. The film material is prepared by adopting an extrusion method to prepare a thick sheet and then performing biaxial stretching, and has good transparency and air tightness. The release layer 2 is formed by a release agent, and is used for preventing the formed inorganic polymer film layer 1 and the imaging layer 4 from being adhered to each other, and the release layer 2 can be a film, a paste or a wax according to different states of the release agent. The imaging layer 4 is the most main coating of the hot stamping film and determines the main performances of the hot stamping film, such as color, brightness, edge cutting performance, flexibility, high temperature resistance, wear resistance and the like. Set up wearing layer 3 between imaging layer 4 and release layer 2, can realize avoiding imaging layer 4 to be scraped flower or wearing and tearing to fade, and then guarantee that imaging layer 4's pattern is complete and the definition is high to promote the display effect of thermoprint membrane to imaging layer 4. Because the holographic image micro-nano structure is arranged on one surface of the imaging layer 4, the transparent medium layer 5 is tightly attached to the holographic image micro-nano structure, and the holographic image micro-nano structure can be rubbed on the transparent medium layer 5. And, set up structure protective layer 6 between transparent dielectric layer 5 and UV glue film 7 to protect holographic image micro-nano structure, can realize the solidification to imaging layer 4 micro-nano structure like this, the holographic image of protection thermoprint membrane is not destroyed by high temperature. The transparent dielectric layer 5 may be zinc sulfide.

The transparent medium color-changing hot stamping film 10 provided by the technical scheme of the utility model is suitable for a cold stamping process and can completely replace the traditional hot stamping process. The transparent medium color-changing hot stamping film 10 is molded on the imaging layer 4 to form an holographic pattern layer, so that the transfer can be carried out at normal temperature, heating is not required, the processing cost is low, a metal hot stamping plate is not required to be manufactured, a precoated photosensitive plate (PS plate) is adopted, the plate making period is short, and the cost is low. The metal reflecting layer is arranged as the transparent medium layer 5, so that the shielding of the imaging layer 4 can be weakened, the color effect cannot be weakened, colorful and gorgeous patterns or figures can be presented under illumination, and the life and the environment of people are beautified.

Specifically, zinc sulfide is used as the transparent dielectric film, and the zinc sulfide film forms constructive interference due to reflected light occurring at the upper and lower surfaces, thereby enhancing the reflected light, and thus not reducing the coloring effect. In addition, a fluorescent layer can be additionally arranged between the imaging layer 4 and the transparent medium layer 5, the fluorescent layer is excited by weak light to generate strong light with certain frequency, light is reflected by the surface of the transparent medium layer 5, and finally, the gold stamping effect with more colors and gloss can be realized under the weak light, and the product is more gorgeous. As a semiconductor material, zinc sulfide is referred to. The molecular formula is ZnS, the molecular weight is 97.45, the melting point is 1020 ℃ (15MPa), white crystal has a lattice constant of 0.547nm, hexagonal crystal form and density of 4.08g/cm 3. The forbidden band width is 3.6eV, which is the widest of II-VI compound semiconductor materials. Powdered zinc sulfide is the most important electroluminescent material, photoluminescent material.

Further, in other embodiments, the transparent medium layer 5 is made of other photochromic materials. By reference, photochromic material is meant a material that changes color when activated by a light source. The first successful commercial application began in the 60's of the 20 th century, where two materials scientists, amistod and Stooky, in the Corning studio of the united states, first discovered reversible photochromic properties of silver halide (AgX) containing glasses. The photochromic material can be classified into 1 organic photochromic compound, 2 inorganic photochromic compound according to the classification. Therefore, the hot stamping film can change different colors by utilizing the characteristic that the photochromic compound can change colors repeatedly when being irradiated by light with different intensities and wavelengths. The colorful and gorgeous patterns and designs can be presented under the illumination, and the life and the environment of people are beautified.

Optionally, the material of the wear-resistant layer 3 is acrylic varnish or silicone varnish.

The main components of the acrylic varnish are acrylic resin, extender pigment auxiliary agent, organic solvent and the like, and the acrylic varnish can be dried at normal temperature and has good weather resistance, light resistance, heat resistance, mildew resistance and adhesive force. In addition, the acrylic varnish layer not only has good wear resistance, but also has good temperature resistance and weather resistance, so that the wear-resistant layer 3 is arranged between the imaging layer 4 and the release layer 2, after the inorganic polymer thin film layer 1 and the release layer 2 are torn off, the wear-resistant layer 3 is adhered and fixed on the layer surface of the imaging layer 4 facing the release layer 2, and the wear-resistant layer 3 made of acrylic varnish plays a role in dual protection of temperature resistance and wear resistance on the imaging layer 4. The main component of the organic silicon varnish is organic silicon, the wear-resistant layer 3 can also be made of organic silicon varnish material to realize the protection of the imaging layer 4, the wear-resistant layer 3 is adhered and fixed on the layer surface of the imaging layer 4 by an air spraying process or a light curing process, and as the initial states of the acrylic varnish and the organic silicon varnish are both liquid, in order to uniformly coat the liquid wear-resistant layer 3 between the imaging layer 4 and the release layer 2, the common practice is to coat the corrosion-resistant layer by the air spraying process. The specific working principle of the air spraying process is as follows: the air flow of the compressed air flows through a nozzle hole of the spray gun to form negative pressure, the acrylic varnish or organic silicon varnish is sucked from a suction pipe by the negative pressure and is sprayed out through the nozzle to form paint mist, and the paint mist is sprayed onto the surface of the imaging layer 4 to form the uniform wear-resistant layer 3.

Optionally, the wear resistant layer 3 has a thickness in the range of 0.5 μm to 8 μm; the thickness of the wear resistant layer 3 is here suitably chosen, for example by using a thickness of the wear resistant layer 3 of 0.5 μm, or 3 μm, or 6 μm, or 8 μm. If the thickness of the wear-resistant layer 3 is less than 0.5 μm, the wear-resistant effect is not obvious, or the wear-resistant effect is gradually eliminated along with the prolonging of the service time; if the thickness of the wear-resistant layer 3 is greater than 8 μm, the display effect of the cold-ironing wear-resistant film is affected, and the cost is increased, which causes resource waste.

Optionally, the material of the protective layer 6 is a thermoplastic resin or a cross-linked resin.

The protective layer 6 is generally a resin layer, and a thermoplastic resin or a resin of a cross-linking system is used, wherein the thermoplastic resin can be chemically reacted only under extreme conditions, and has good chemical structure stability. The cross-linked system resin is a net-shaped or body-shaped polymer formed by the covalent bond connection among linear or branched polymer chains, and has good mechanical strength, elasticity, dimensional stability, solvent resistance and the like. It will be appreciated that since the thermoplastic resin and the cross-linked system may have good temperature resistance and structural stability, and the glass transition temperature is high, it may be used as the structural protective layer 6.

Optionally, the surface of the wear-resistant layer 3 facing away from the imaging layer 4 is provided with a nanoparticle layer or a polymer resin layer. The setting of nano particle layer or polymer layer can further improve the wear resistance of cold perm membrane. The nano-particles can be selected from nano-metal particles, have higher hardness, and can greatly improve the wear resistance of the surface of the cold wave film, thereby effectively preventing the imaging layer 4 from being scratched. Of course, the nano-particles can also be non-metal nano-particles such as nano-titanium oxide, nano-calcium oxide, etc., so as to greatly improve the wear resistance of the surface of the cold-wave film.

Optionally, the thermoplastic resin is one of cellulose nitrate, cellulose acetate butyrate, polycarbonate, polyacrylamide, polyvinyl carbazole, styrene-maleic anhydride copolymer, and acrylic resin.

Alternatively, the imaging layer 4 is made of a resin material cured by ultraviolet irradiation or molded.

In order to enhance the fixing strength between the imaging layer 4 and the transparent medium layer 5, the imaging layer 4 is made of resin material by Ultraviolet (UV) curing or molding. The UV curing means an ultraviolet light curing process, and the embossing means fixing the image forming layer 4 by heating and pressing. The imaging layer 4 can be bonded and fixed on the transparent medium layer 5 by the ultraviolet light curing process, and the gap between the imaging layer 4 and the transparent medium layer 5 can be further reduced by the mould pressing process, so that the fixing strength of the imaging layer 4 is improved.

Further, a two-dimensional code label 8 is arranged between the imaging layer 4 and the transparent medium layer 5. Here the two-dimensional code label 8 is used for making an anti-counterfeit label or for displaying relevant content and information to people. Two-dimensional code label 8 is located between imaging layer 4 and the transparent medium layer 5, can avoid two-dimensional code label 8 directly to expose like this on the one hand, has avoided two-dimensional code label 8 to be scraped colored risk effectively, and on the other hand also is convenient for people to watch the information of two-dimensional code label 8.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The transparent medium color-changing hot stamping film is characterized by comprising an inorganic polymer film layer, a release layer, a wear-resistant layer, an imaging layer, a transparent medium layer, a protective layer and a UV (ultraviolet) adhesive layer which are sequentially stacked, wherein one surface of the imaging layer is provided with a holographic image micro-nano structure.

2. The transparent dielectric color-changing hot stamping film as claimed in claim 1, wherein the transparent dielectric layer is a photochromic material.

3. The transparent dielectric color-changing hot stamping film as claimed in claim 1, wherein the transparent dielectric layer is made of zinc sulfide.

4. The transparent dielectric color-changing hot stamping film as claimed in claim 1, wherein the wear-resistant layer is made of acrylic varnish or silicone varnish.

5. The transparent color-changing thermoprinting film for medium of claim 1, wherein the material of said protective layer is thermoplastic resin or cross-linked system resin.

6. The transparent dielectric color-changing hot stamping film as claimed in claim 1, wherein a surface of the wear layer facing away from the imaging layer is provided with a nanoparticle layer or a polymer resin layer.

7. The transparent dielectric color-changing hot stamping film as claimed in claim 1, wherein the imaging layer is made of resin material cured by ultraviolet irradiation or molded.