CN217863432U - Heat transfer transparent film - Google Patents

Abstract

The utility model discloses a heat-transfer seal transparent film, this heat-transfer seal transparent film include the thin film basic unit that stacks gradually the setting, from type layer, formation of image layer and UV glue film, the formation of image layer with still be equipped with transparent dielectric layer between the UV glue film, be hot melt from type film from the type layer. The utility model discloses technical scheme improves the transparency of heat-transfer die.

Description

Heat transfer transparent film

Technical Field

The utility model relates to a heat-transfer seal technical field, in particular to heat-transfer seal transparent film.

Background

Thermal transfer printing is an emerging printing process. The printing mode of the process is divided into two parts of transfer printing film printing and transfer printing processing, wherein the transfer printing film printing adopts dot printing, patterns are printed on the surface of the film in advance, and the printed patterns are rich in layers, bright in color, changeable, small in color difference and good in reproducibility. With the increasing living standard of people, the pursuit of beauty is stronger and stronger, and the application of the thermal transfer printing technology is wider and wider. However, in some cases, a user needs to see the original content of the package or see the internal structure of the package, but the existence of the transfer film can shield the package, that is, the transparency is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective provides heat-transfer seal transparent film, aims at improving the transparency of heat-transfer seal film.

In order to realize the above purpose, the utility model provides a heat-transfer seal transparent film, including the film basic unit that stacks gradually the setting, from type layer, formation of image layer and UV glue film, formation of image layer with still be equipped with transparent dielectric layer between the UV glue film, be hot melt from type film from the type layer.

Optionally, the transparent dielectric layer includes a plurality of transparent dielectric films sequentially stacked.

Optionally, the transparent dielectric layer includes a first transparent dielectric film, a second transparent dielectric film, and a third transparent dielectric film, which are sequentially stacked.

Optionally, the material of the transparent dielectric film is zinc sulfide or magnesium fluoride.

Optionally, the imaging layer is made of a resin material UV cured or molded.

Optionally, the film base layer is based on polyethylene terephthalate.

Optionally, the thickness of the film base layer is greater than or 10 μm, and less than or 20 μm.

Optionally, the thickness of the UV glue layer ranges from 730 μm to 830 μm.

The utility model discloses technical scheme is through range upon range of setting up the film basic unit in proper order, from type layer, formation of image layer and UV glue film formation heat transfer printing transparent film, and this heat transfer printing transparent film is used for heat transfer printing technology to certain transparency has. Wherein, the release layer is a hot-melt release film to ensure that the film base layer is smoothly separated from the imaging layer. The hot-melt release film contains a hot-melt release agent, and when the hot-transfer reflective film is heated by a hot-transfer device, the hot-melt release agent loses efficacy and melts, so that the film base layer and the imaging layer are separated, and then the hot-transfer process can be carried out. The transparent medium layer is arranged between the imaging layer and the UV adhesive layer and used for replacing the original metal reflecting layer. After the thermal transfer printing is finished, the release layer is heated and dissolved, so that the film base layer is separated from the imaging layer, and after the thermal transfer printing is finished, the surface of a product to be transferred only has the imaging layer, the transparent dielectric layer and the UV adhesive layer, so that the thermal transfer printing transparent film does not have an opaque layer for shielding light, such as a metal reflecting layer. The UV adhesive layer has good transparency, the imaging layer also has certain transparency or local transparency, the transparent dielectric layer replaces the original metal reflecting layer, and the transparent dielectric layer has certain reflectivity and transmissivity, so that human eyes can clearly see the patterns on the surface of the imaging layer and can see the original contents of a packing material, and the transparency of the heat transfer printing transparent film is improved.

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 embodiments or the prior art descriptions 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 view of an embodiment of a transparent thermal transfer film according to the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

The reference numbers illustrate:

reference numerals	Name(s)	Reference numerals	Name (R)
				100	Heat transfer transparent film	150	Transparent dielectric layer
110	Film base layer	151	First transparent dielectric film
				120	Release layer	152	A second transparent dielectric film
120	Imaging layer	153	Third transparent dielectric film
				140	UV adhesive layer

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 of the feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a heat-transfer seal transparent film 100.

In the embodiment of the present invention, as shown in fig. 1, the thermal transfer transparent film 100 includes a film base layer 110, a release layer 120, an imaging layer 120 and a UV glue layer 140, which are stacked in sequence, a transparent medium layer 150 is further disposed between the imaging layer 120 and the UV glue layer 140, and the release layer 120 is a hot-melt release film.

Specifically, the film base layer 110 is a polyethylene terephthalate (PET) film base layer 110, and the PET film is a film material prepared by using polyethylene terephthalate as a raw material, making a thick sheet by an extrusion method, and performing biaxial stretching. It should be noted that the definition of thinness in the film base layer 110 is relative to the area of the film base layer 110, that is, the thickness of the film base layer 110 is smaller than the area of the film base layer 110, so that the pattern of the imaging layer 120 can be displayed without hindrance. The release layer 120 is formed by a hot-melt release film, and is used for preventing the formed film base layer 110 and the imaging layer 120 from being bonded with each other, and according to different states of the release layer 120, the release layer 120 can be a film, a paste or a wax, when the thermal transfer transparent film 100 is laid on a thermal transfer device, and is heated for a period of time, the release layer 120 is melted and failed, so that the film base layer 110 and the imaging layer 120 are separated. The imaging layer 120 determines the primary properties of the thermal transfer transparent film 100 such as color, brightness, edge-cutting properties, flexibility, high temperature resistance, and corrosion resistance. However, the image forming layer 120 after the transfer is relatively poor in fastness and is easily abraded by accidental rubbing, so that the color of the heat transfer transparent film 100 is not darkened or thinned with the passage of time in order to ensure the durability and fastness of the image forming layer 120. The outer surface of the imaging layer 120, which faces away from the film base layer 110, is provided with a UV glue layer 140, and the UV glue layer 140 is formed by coating a layer of UV glue on the surface of the imaging layer 120 and curing the UV glue layer through ultraviolet irradiation. The protective effect is provided for the imaging layer 120, the effect of further bonding and fixing the imaging layer 120 is also provided, and meanwhile, the ductility and the stretch resistance of the thermal transfer transparent film 100 can be enhanced, so that the thermal transfer transparent film is not easy to crease, and the phenomenon of fracture of the imaging layer 120 can not occur, thereby prolonging the service life of the thermal transfer transparent film 100. Wherein, the UV adhesive layer 140 can also be replaced by pressure sensitive adhesive or hot melt adhesive. The UV adhesive layer 140 has better transparency, the imaging layer 120 itself has certain transparency or local transparency, and the release layer 120 is dissolved by heating after the thermal transfer printing is completed, so that the film base layer 110 is separated from the imaging layer 120, and after the thermal transfer printing is completed, the surface of the product to be transferred is only provided with the imaging layer 120 and the UV adhesive layer 140, so that the thermal transfer printing transparent film 100 does not have an opaque layer for blocking light, such as a reflective metal layer. And a transparent dielectric layer 150 is further arranged between the imaging layer 120 and the UV adhesive layer 140, the transparent dielectric layer 150 replaces the original metal reflecting layer, and the transparent dielectric layer 150 has certain reflectivity and transmissivity, so that human eyes can clearly see the patterns on the surface of the imaging layer 120 and can see the original contents of the packing materials.

The utility model discloses technical scheme is through setting up film basic unit 110, from type layer 120, formation of image layer 120 and UV glue film 140 formation heat transfer printing transparent film 100 in proper order range upon range of, and this heat transfer printing transparent film 100 is used for the heat transfer printing technology to certain transparency has. The release layer 120 is a hot-melt release film to ensure that the film base layer 110 is smoothly separated from the imaging layer 120. The hot-melt release film contains a hot-melt release agent, and when the hot-transfer reflective film is heated by a hot-transfer device, the hot-melt release agent loses efficacy and melts, so that the film base layer 110 is separated from the imaging layer 120, and then the hot-transfer process can be carried out. The transparent dielectric layer 150 is disposed between the imaging layer 120 and the UV glue layer 140, and is used to replace the original metal reflective layer. After the thermal transfer printing is completed, the release layer 120 is heated and dissolved, so that the film base layer 110 is separated from the imaging layer 120, and after the thermal transfer printing is completed, the surface of the product to be transferred only has the imaging layer 120, the transparent dielectric layer 150 and the UV glue layer 140, so that the thermal transfer printing transparent film 100 does not have an opaque layer, such as a metal reflective layer, for blocking light. The UV glue layer 140 has good transparency, the imaging layer 120 itself has certain transparency or partial transparency, the transparent dielectric layer 150 replaces the original metal reflective layer, and the transparent dielectric layer 150 has certain reflectivity and transmissivity, so that the human eyes can clearly see the patterns on the surface of the imaging layer 120 and the original contents of the package, thereby improving the transparency of the thermal transfer transparent film 100.

Further, the transparent dielectric layer 150 includes a plurality of transparent dielectric films sequentially stacked. Specifically, the transparent dielectric layer 150 is formed by stacking a plurality of transparent dielectric films, the number of layers of the transparent dielectric films is generally 3 to 5, the transparent dielectric films are generally alternately arranged according to the high and low refractive indexes, and the transmittance and the reflectivity of the thermal transfer printing transparent film 100 can achieve a better effect by adjusting the refractive indexes of the transparent dielectric films.

In one embodiment, the transparent dielectric film is made of zinc sulfide or magnesium fluoride. The refractive index of zinc sulfide is 2.3, the refractive index of magnesium fluoride is 1.38, zinc sulfide or magnesium fluoride can be selected for use as the transparent dielectric film, in this embodiment, referring to fig. 2, transparent dielectric layer 150 includes first transparent dielectric film 151, second transparent dielectric film 152 and third transparent dielectric film 153 that stack up in proper order, and zinc sulfide is selected for use as first transparent dielectric film 151 layer and third transparent dielectric film 153, and magnesium fluoride is selected for use as second transparent dielectric film 152, so just constituted the transparent dielectric film of refractive index for the three-layer high, low, high. Thereby improving the transmittance and reflectance of the transparent dielectric film and enhancing the transparency of the thermal transfer transparent film 100.

Referring again to FIG. 1, in one embodiment, imaging layer 120 is made of a resin material that is UV cured or molded. In order to enhance the fixing strength between the image forming layer 120 and the transparent dielectric layer 150, the image forming layer 120 is formed by Ultraviolet (UV) curing or molding a resin material. The UV curing refers to an ultraviolet light curing process, and the embossing process refers to fixing by heating and pressing to form the image forming layer 120. The ultraviolet light curing process can bond and fix the imaging layer 120 on the transparent medium layer 150, and the molding process can further reduce the gap between the imaging layer 120 and the transparent medium layer 150, thereby improving the fixing strength of the imaging layer 120.

In one embodiment, the film base 110 is formed from polyethylene terephthalate. Specifically, the film base layer 110 is a polyethylene terephthalate (PET) film base layer 110, and the PET film is a film material prepared by using polyethylene terephthalate as a raw material, making a thick sheet by an extrusion method, and performing biaxial stretching, so that the film base layer 110 has good transparency, air tightness and transparency.

Further, the film base layer 110 has a thickness greater than or 10 μm and less than or 20 μm. Specifically, the film base layer 110 is a PET film base layer 110, and the thickness thereof is selected appropriately, and if the thickness of the film base layer 110 is less than 10 μm, the thickness of the film base layer 110 is too thin, which is not favorable for the detachment and processing of the film base layer 110; if the thickness of the film base 110 is greater than 20 μm, the thickness of the film base 110 is too thick to be advantageous for the airtightness of the film base 110. The thickness of the film base layer 110 may be 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, 20 μm, or the like.

In one embodiment, the thickness of the UV glue layer 140 ranges from 730 μm to 830 μm. If the thickness of the UV adhesive layer 140 is moderate, if the thickness of the UV adhesive layer 140 is less than 730 μm, it is not favorable for protecting the thermal transfer transparent film 100; if the thickness of the UV glue layer 140 is greater than 830 μm, it is not favorable for enhancing the ductility of the thermal transfer transparent film 100. The thickness of the UV glue layer 140 may be 730 μm, 750 μm, 770 μm, 790 μm, 810 μm, 830 μm, etc.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (8)

1. The utility model provides a heat-transfer seal transparent film which characterized in that, including the film basic unit that stacks gradually the setting, from type layer, formation of image layer and UV glue film, the formation of image layer with still be equipped with transparent dielectric layer between the UV glue film, it is hot melt from type film to leave the type layer.

2. The heat transfer transparent film of claim 1, wherein the transparent dielectric layer comprises a plurality of transparent dielectric films disposed in a sequential stack.

3. The heat transfer transparent film of claim 2, wherein the transparent dielectric layer comprises a first transparent dielectric film, a second transparent dielectric film, and a third transparent dielectric film sequentially stacked.

4. The heat transfer transparent film of claim 2, wherein the transparent dielectric film is made of zinc sulfide or magnesium fluoride.

5. The heat transfer transparent film of claim 1, wherein the imaging layer is made of a resin material UV cured or molded.

6. The heat transfer transparent film of claim 1, wherein the film base layer is formed from polyethylene terephthalate.

7. The heat transfer transparent film of claim 1, wherein the film base layer has a thickness of greater than or 10 μ ι η and less than or 20 μ ι η.

8. The heat transfer transparent film of claim 1, wherein the UV glue layer has a thickness in a range of 730 μ ι η to 830 μ ι η.

Images