CN208085349U - Heat transfer film and thermal transfer product - Google Patents
Heat transfer film and thermal transfer product Download PDFInfo
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- CN208085349U CN208085349U CN201820219262.0U CN201820219262U CN208085349U CN 208085349 U CN208085349 U CN 208085349U CN 201820219262 U CN201820219262 U CN 201820219262U CN 208085349 U CN208085349 U CN 208085349U
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- heat transfer
- transfer film
- hot melt
- melt adhesive
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Abstract
The utility model discloses a kind of heat transfer film and thermal transfer product, wherein the heat transfer film includes hot melt adhesive layer, and the hot melt adhesive layer is hyaline layer, and its decorative cover for being oppositely arranged with bonding plane and with the bonding plane；Decorative layer, the decorative layer are set to the decorative cover of the hot melt adhesive layer；High ductibility protective layer, the high ductibility protective layer is set on the decorative layer away from the side of the hot melt adhesive layer；Release layer, the release layer is set on the high ductibility protective layer away from the side of the decorative layer；And elastic film layer, the elastic film layer is set on the release layer away from the side of the high ductibility protective layer.In this way, fold will not occur at the surface curvature of stock for the utility model heat transfer film, so that heat transfer film can have good attaching effect.
Description
Technical field
The utility model is related to thermal transfer technology field, more particularly to a kind of heat transfer film and thermal transfer product.
Background technology
With the development of science and technology and the continuous change of people's demand, glassware, especially 3D glasswares, increasingly by
It welcomes, application field is also more and more extensive, such as glass mobile phone battery cover, vehicle glass, exterior trimming parts point incrustation etc..But
It is that due to Glass breadks easily and style is single, it usually needs one layer of decorating film is attached on the surface of glass, in this way, not only can be to prevent
Only glass bursts；Decoration function can also be played so that glassware can have different color, different pattern, even different lines
The display effect of reason.
But existing decorating film is normally only used for being attached at planar article surface, for 3D products, such as 3D glass systems
Product, such as glass mobile phone battery cover, at the position that existing decorating film is at the corner bow of 3D products or other bending angle are larger
It is bad to be easy fold, attaching effect.
Utility model content
The main purpose of the utility model is to propose a kind of heat transfer film, it is intended to which existing decorating film is in the corner of 3D products
It is easy fold at knee or the larger position of other bending angle, attaches the bad technical problem of effect.
To achieve the above object, the utility model proposes a kind of heat transfer films, including：
Hot melt adhesive layer, the hot melt adhesive layer be hyaline layer, the hot melt adhesive layer have bonding plane and with the bonding plane phase
To the decorative cover of setting；
Decorative layer, the decorative layer are set to the decorative cover of the hot melt adhesive layer；
High ductibility protective layer, the high ductibility protective layer is set on the decorative layer away from the one of the hot melt adhesive layer
Side；
Release layer, the release layer is set on the high ductibility protective layer away from the side of the decorative layer；And
Elastic film layer, the elastic film layer is set on the release layer away from the one of the high ductibility protective layer
Side.
Preferably, the material of the high ductibility protective layer is high ductibility resin.
Preferably, the high ductibility protective layer is coating, film layer or coating.
Preferably, the thickness range of the high ductibility protective layer is 5 microns to 30 microns.
Preferably, the material of the elastic film layer includes at least one kind in PU materials, PET material or PE materials.
Preferably, the thickness range of the hot melt adhesive layer is 5 microns to 30 microns.
Preferably, the decorative layer is to be set to the hot melt adhesive layer and the height by coating, spraying or printing technology
The word with different colours, pattern or lines between ductility protective layer.
Preferably, the heat transfer film further includes antistatic backing, and the antistatic backing is set to the elastic film layer
Away from the side of the release layer.
Preferably, the heat transfer film further includes protection film layer, and the protection film layer separably fits in the hot melt
The bonding plane of glue-line.
The utility model also proposes a kind of thermal transfer product, including stock and the decoration for being attached at the stock surface
Film, the decorating film are heat transfer film.The heat transfer film includes：
Hot melt adhesive layer, the decorative cover that the hot melt adhesive layer has bonding plane and is oppositely arranged with the bonding plane；
Decorative layer, the decorative layer are set to the decorative cover of the hot melt adhesive layer；
High ductibility protective layer, the high ductibility protective layer is set on the decorative layer away from the one of the hot melt adhesive layer
Side；
Release layer, the release layer is set on the high ductibility protective layer away from the side of the decorative layer；And
Elastic film layer, the elastic film layer is set on the release layer away from the one of the high ductibility protective layer
Side.
The utility model heat transfer film, by setting with the hot melt adhesive layer of preferable ductility, high ductibility protective layer with
And elastic film layer so that heat transfer film is in hot pressing, under high temperature, high pressure, hot melt adhesive layer, high ductibility protective layer with
And elastic film layer can at the surface curvature of stock mutually drive or with extending everywhere, filling, so as to effectively keep away
Exempt from heat transfer film and fold occurs at the surface curvature of stock, so that heat transfer film has good attaching effect.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of the utility model heat transfer film；
Fig. 2 is the structural schematic diagram of one embodiment of the utility model thermal transfer product.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 100 | Heat transfer film | 10 | Hot melt adhesive layer |
| 20 | Decorative layer | 30 | High ductibility protective layer |
| 40 | Release layer | 50 | Elastic film layer |
| 60 | Antistatic backing | 70 | Protection film layer |
| 200 | Stock | 1000 | Thermal transfer product |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction be only used for explain it is opposite between each component under a certain particular pose (as shown in the picture)
Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.In addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, will be understood that this technical side when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of heat transfer films.The heat transfer film is used for glassware, especially 3D glasswares, than
Such as glass mobile phone battery cover, vehicle glass, exterior trimming parts point incrustation；Certainly, which can be used for other 3D classes
Like glassware.Preferably, heat transfer film be used for 3D glasswares, the 3D glasswares be with curved surface variation or it is variously-shaped
Glass product, such as glass mobile phone battery cover.
The utility model provides the outline application method of heat transfer film for the ease of understanding the utility model,：I.e. first
By complete heat transfer film and stock high temperature, high pressure environment in carry out hot pressing so that heat transfer film is in high temperature, high pressure
It is smoothly complete to attach on the substrate under effect, after the completion of hot pressing, the layer other than release layer and release layer is torn off, is left
Decorative layer etc. to decorate, explosion-proof use.
In one embodiment of the utility model, as depicted in figs. 1 and 2, the heat transfer film 100, including：
Hot melt adhesive layer 10, the decorative cover that the hot melt adhesive layer 10 has bonding plane (figure is not marked) and is oppositely arranged with bonding plane
(figure is not marked)；
Decorative layer 20, the decorative layer 20 are set to the decorative cover of hot melt adhesive layer 10；
High ductibility protective layer 30, the high ductibility protective layer 30 is set on decorative layer 20 away from the one of hot melt adhesive layer 10
Side；
Release layer 40, the release layer 40 is set on high ductibility protective layer 30 away from the side of decorative layer 20；And
Elastic film layer 50, the elastic film layer 50 is set on release layer 40 away from the one of high ductibility protective layer 30
Side.
Wherein, hot melt adhesive is solid at normal temperatures, and heating, which is molten to certain temperature, to be become to flow (in this way, with preferable
Ductility), and have the liquid of certain viscosity；So under high temperature, high pressure, hot melt adhesive can smoothly be bonded in body surface.
So in the utility model, the effect of the hot melt adhesive layer 10 under high temperature, high pressure, can be turned the heat in thermal transfer
Die 100 is fixed on stock (i.e. transfer substrate), and avoid heat transfer film 100 at the corner bow of 3D stocks or its
Fold occurs at the larger position of his bending angle.
Wherein, the decorative layer 20 is to have different colours between hot melt adhesive layer 10 and high ductibility protective layer 30
Word, pattern or lines etc. so that the display effect that stock can be with different color, different pattern, even different texture
Fruit.
Wherein, the high ductibility protective layer 30 is for protecting decorative layer 20.Specifically, on the one hand, high ductibility protects
Layer 30 have higher ductility, in thermal transfer, high ductibility protective layer 30 can with or drive hot melt adhesive layer 10 held in 3D
It prints at the corner bow of object or extends at the position that other bending angle are larger, to fill the knee of 3D stocks, to not
Only decorative layer 20 can be prevented to be destroyed in the knee of 3D stocks, additionally it is possible to be effectively prevented from heat transfer film 100 and be held in 3D
Fold occurs for the knee for printing object.On the other hand, high ductibility protective layer 30 can also to after thermal transfer and removal release layer 40
Decorative layer 20 (surface of heat transfer film 100 i.e. at this time) afterwards is protected, to increase the wearability on 100 surface of heat transfer film
Energy or chemical stability.
Wherein, the release layer 40 is for being isolated high ductibility protective layer 30 and elastic film layer 50, and is used in heat
After the completion of pressure, release layer 40 and elastic film layer 50 are detached with high ductibility protective layer 30, with realize only have hot melt adhesive layer 10,
Decorative layer 20 and high ductibility protective layer 30 stay in stock surface, to avoid stock surface redundancy.It is appreciated that from
Type layer 40 also has preferable ductility.
Wherein, the elastic film layer 50 is basal layer, is used for as carrier so that release layer 40, high ductibility are anti-
Sheath 30, decorative layer 20 and hot melt adhesive layer 10 can be with faces attached thereto, to form heat transfer film 100.When thermal transfer is completed
Afterwards, elastic film layer 50 can remove from high ductibility protective layer 30 with release layer 40 and remove.
The elastic film layer 50 is attached to by release layer 40 on high ductibility protective layer 30 and decorative layer 20, to
Can effective protection high ductibility protective layer 30 and decorative layer 20 (do not existed especially by outer force effect before release layer 40 is torn off
Thermal pressure in hot pressing) it scratches or damages, to ensure the quality of heat transfer film 100 and attach effect.
The elastic film layer 50 has preferable ductility simultaneously, and it is not easy to shrink rebound after extension elongation,
When thermal transfer, elastic film layer 50 under the effect of the pressure, drives or follows other layers to extend along the binding face of stock, because of bullet
Property film layer 50 have preferable ductility and extend after be not easy shrink rebound, can be at the corner bow of 3D stocks
Or extend at the larger position of other bending angle, filling, so as to be effectively prevented from heat transfer film 100 in 3D stocks
Fold occurs for knee, effectively to increase the attaching effect of heat transfer film 100.Particularly, elastic film layer 50 can be protected
High ductibility protective layer 30 and decorative layer 20, when preventing hot pressing, external force scratch or damage high ductibility protective layer 30 and
Decorative layer 20.
It is therefore to be understood that the utility model heat transfer film 100, passes through hot melt adhesive layer of the setting with preferable ductility
10, high ductibility protective layer 30 and elastic film layer 50 so that heat transfer film 100 is in hot pressing, in high temperature, high pressure
Under, hot melt adhesive layer 10, high ductibility protective layer 30 and elastic film layer 50 can be mutual at the surface curvature of 3D stocks
It drives or with extending everywhere, filling, pleat occurs at the surface curvature of stock so as to be effectively prevented from heat transfer film 100
Wrinkle, so that heat transfer film 100 has good attaching effect.
In the present embodiment, heat transfer film 100 is in use, first by complete heat transfer film 100 and stock in high temperature, height
Hot pressing is carried out in the environment of pressure so that heat transfer film 100 is smoothly completely attached to stock under the action of high temperature, high pressure
On, after the completion of hot pressing, release layer 40 and elastic film layer 50 are torn off, leave high ductibility protective layer 30, decorative layer 20 and
Hot melt adhesive layer 10 to decorate, explosion-proof use.
In addition, as needed, hot melt adhesive layer 10 can be removed from stock, and glass surface will not be damaged,
To be conducive to the recycling of stock, utilize.
It is appreciated that in order to avoid being blocked to the formation of decorative layer 20, the hot melt adhesive layer 10 is preferably hyaline layer.
Further, the material of hot melt adhesive layer 10 can be the organic glue of heat fixation, in this way, can be by heat transfer film 100
It fixes on the substrate.Stock is 3D transparent glass products, for example is the transparent mobile phone glass rear shells of 3D, the hot melt adhesive layer 10
It can be hyaline layer, be blocked to avoid to the formation of decorative layer 20.
Further, the thickness range of the hot melt adhesive layer 10 is 5 microns to 30 microns.
If being appreciated that, hot melt adhesive layer 10 is excessively thin, and heat transfer film 100 can be insufficient to allow to be attached at the surface of stock,
And in hot pressing, it is also be easy to cause the fracture of hot melt adhesive layer 10 or tomography, to which the attaching effect of heat transfer film 100 can be influenced
Fruit；If hot melt adhesive layer 10 is blocked up, waste of material is not only resulted in, and can make heat transfer film 100 easily from the table of stock
It falls off on face.Therefore both of the above in order to balance, the thickness preferred scope of the hot melt adhesive layer 10 is 5 microns to 30 microns.
Further, the technique that decorative layer 20 can select coating, spraying or printing etc. more ripe is process, so that dress
The processing of adoring layer 20 is simple, conveniently, it is at low cost.
Further, high ductibility protective layer 30 can select the high ductibility resin of function admirable to be made, so that Gao Yan
Malleability protective layer 30 has enough ductility and stability.Certainly, high ductibility protective layer 30 can also select other to have
The material of similar effect.
Further, the utility model is not construed as limiting the generation type of high ductibility protective layer 30, even if saying, height extends
Property protective layer 30 can be coating or coating, or even can also be one layer of elastic film layer.In the present embodiment, the high extension
Property protective layer 30 be coating.
Further, high ductibility protective layer 30 is either hyaline layer, can also be color layers.Particularly, by Gao Yan
Malleability protective layer 30 is set as color layers, with the background color layer for decorative layer 20, so as to enrich the display effect of stock, to increase
The applicability of big heat transfer film 100.
Further, the thickness range of the high ductibility protective layer 30 is 5 microns to 30 microns.
If being appreciated that, the high ductibility protective layer 30 is excessively thin, is not enough to protection decorative layer 20, and hold in hot pressing
Easily expose decorative layer 20；If the high ductibility protective layer 30 is blocked up, it can make decorative layer 20 and high ductibility protective layer
30 easily fall off from the decorative cover of hot melt adhesive layer 10, and blocked up also waste material.So both of the above in order to balance, described
The thickness preferred scope of high ductibility protective layer 30 is 5 microns to 30 microns.
Optionally, release layer 40 can be a mould release coating, solid state be kept at normal temperatures, in certain temperature
Under it is fusible, become smaller with the cohesive force of high ductibility protective layer 30, can be detached from from high ductibility protective layer 30 quickly, no adhesion
Residue.
Optionally, the release layer 40 can also be the elastic coating with release effect, which is Si modification
Polyurethane lotion or Si modification acrylic emulsion or Si modification any formation of polyurethane acrylate elastic membrane, have
Good elasticity, and release function is carried, it can be directly detached from from high ductibility protective layer 30 after transfer.
Further, in order to make elastic film layer 50 have preferable ductility and extend after be not easy shrink rebound
The material of feature, the elastic film layer 50 can select at least one of PU materials, PET material or PE materials.Specifically,
Elastic film layer 50 can individually select PET material, PU materials or PE materials to be process, and also can be selected by PET material, PU materials
Material and PE materials are formed according to the composite processing made of different proportionings, different.And PET material, PU materials and PE materials
Material is relatively conventional resin, so that elastic film layer 50 easy to process, at low cost and being easy to draw materials.
Certainly, elastic film layer 50 also can be selected other similar materials with high ductibility and other effects and be process, than
Such as, elastic film layer 50 can also select PETG (i.e. polyethylene terephthalate -1,4-CHDM ester) material
It is process.
Optionally, the elastic film layer 50 can be hyaline layer, or non transparent layer.
Further, the thickness range of the elastic film layer 50 is 5 microns to 30 microns.
If being appreciated that, the elastic film layer 50 is excessively thin, is not enough to carrying release layer 40, high ductibility protective layer
30, decorative layer 20 and hot melt adhesive layer 10, and be easily broken off in hot pressing or tomography and expose release layer 40, to cause
Undesirable attaching effect；If the elastic film layer 50 is blocked up, it will cause waste of material.So both of the above in order to balance,
The thickness preferred scope of the elastic film layer 50 is 5 microns to 30 microns.
The utility model provides a kind of preparation method of heat transfer film 100 for the ease of understanding the utility model, big
Cause includes the following steps：
1) elastic film layer 50 is selected to be used as basal layer, one layer is coated in the elastic film layer 50 has release effect
Release layer 40.
2) a floor height ductility protective layer 30 is coated with or sprayed on release layer 40.
3) one layer of decorative layer 20 is made on high ductibility protective layer 30.Silk-screen, air brushing, offset printing may be used in decorative layer 20
Or gravure makes.
4) one layer of hot melt adhesive layer 10 is coated in decorative layer 20.
Further, as depicted in figs. 1 and 2, the heat transfer film 100 further includes antistatic backing 60, the antistatic backing
60 be set to elastic film layer 50 away from the side of release layer 40.In this way, by the way that antistatic backing 60 is arranged, (for example rolled up in preservation
Deposit or folded deposit) heat transfer film 100 when, can prevent 100 surface of heat transfer film from generating electrostatic and mutually adsorbing, prevented also from thermal transfer
100 surface of film generates electrostatic and adsorbs dust and other impurities, consequently facilitating the preservation of heat transfer film 100.
The material and generation type of the antistatic backing 60 are relatively conventional and ripe technology, need not be gone to live in the household of one's in-laws on getting married one by one herein
It states.
Particularly, according to actual demand, other active layers can also be arranged in the heat transfer film 100, herein need not be one by one
It repeats.
Further, as shown in Figure 1, the heat transfer film 100 further includes protection film layer 70, the protection film layer 70 can divide
The liftoff bonding plane for fitting in hot melt adhesive layer 10.In this way, protection film layer 70 can be used for protecting hot melt adhesive layer 10 before being not used, no
It is scratched or is damaged by outer force effect, to ensure the quality of heat transfer film 100.When using heat transfer film 100, by protective film
Layer 70 taken off from the bonding plane of hot melt adhesive layer 10 from.
There are many kinds of the methods for realizing the bonding plane that protection film layer 70 separably fits in hot melt adhesive layer 10, relatively common
It is bonded mutually to be adsorbed by the electrostatic interaction between protection film layer 70 and hot melt adhesive layer 10.In the present embodiment, it will protect
Cuticular layer 70 and it is not bonded the heat transfer film 100 of protection film layer 70 by roller pressing, so that protection film layer 70 and hot melt adhesive layer
It mutually adsorbs and is bonded because of electrostatic interaction between 10.
The utility model also proposes a kind of thermal transfer product.As depicted in figs. 1 and 2, the thermal transfer product 1000 includes
Stock 200 and the decorating film for being attached at 200 surface of stock, the decorating film are heat transfer film 100 as described above, the heat
The concrete structure of transfer film 100 with reference to above-described embodiment, due to the utility model thermal transfer product 1000 use it is above-mentioned all
Whole technical solutions of embodiment, therefore at least all advantageous effects caused by the technical solution with above-described embodiment,
This is no longer repeated one by one.
The above is only the preferred embodiment of the present invention, and it does not limit the scope of the patent of the present invention,
It is every under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (10)
1. a kind of heat transfer film, which is characterized in that including：
Hot melt adhesive layer, the hot melt adhesive layer are hyaline layer, and the hot melt adhesive layer has bonding plane and opposite with the bonding plane sets
The decorative cover set；
Decorative layer, the decorative layer are set to the decorative cover of the hot melt adhesive layer；
High ductibility protective layer, the high ductibility protective layer is set on the decorative layer away from the side of the hot melt adhesive layer；
Release layer, the release layer is set on the high ductibility protective layer away from the side of the decorative layer；And
Elastic film layer, the elastic film layer is set on the release layer away from the side of the high ductibility protective layer.
2. heat transfer film as described in claim 1, which is characterized in that the material of the high ductibility protective layer is high ductibility
Resin.
3. heat transfer film as described in claim 1, which is characterized in that the high ductibility protective layer be coating, film layer or
Coating.
4. heat transfer film as described in claim 1, which is characterized in that the thickness range of the high ductibility protective layer is 5 micro-
Rice is to 30 microns.
5. heat transfer film as described in claim 1, which is characterized in that the material of the elastic film layer includes at least PU materials
One kind in material, PET material or PE materials.
6. heat transfer film as described in claim 1, which is characterized in that the thickness range of the hot melt adhesive layer is 5 microns to 30
Micron.
7. heat transfer film as described in claim 1, which is characterized in that the decorative layer is to pass through coating, spraying or printer
Skill, the word with different colours, pattern or the lines being set between the hot melt adhesive layer and the high ductibility protective layer.
8. heat transfer film as claimed in any of claims 1 to 7 in one of claims, which is characterized in that the heat transfer film further includes preventing
Electrostatic layer, the antistatic backing be set to the elastic film layer away from the side of the release layer.
9. heat transfer film as claimed in any of claims 1 to 7 in one of claims, which is characterized in that the heat transfer film further includes protecting
Cuticular layer, the protection film layer separably fit in the bonding plane of the hot melt adhesive layer.
10. a kind of thermal transfer product, which is characterized in that including stock and be attached at the decorating film on the stock surface, institute
It is heat transfer film as in one of claimed in any of claims 1 to 9 to state decorating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820219262.0U CN208085349U (en) | 2018-02-06 | 2018-02-06 | Heat transfer film and thermal transfer product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820219262.0U CN208085349U (en) | 2018-02-06 | 2018-02-06 | Heat transfer film and thermal transfer product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208085349U true CN208085349U (en) | 2018-11-13 |
Family
ID=64063867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820219262.0U Active CN208085349U (en) | 2018-02-06 | 2018-02-06 | Heat transfer film and thermal transfer product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208085349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624298A (en) * | 2019-01-11 | 2019-04-16 | 深圳凯和科技有限公司 | Method for adhering film |
| CN111361328A (en) * | 2020-03-17 | 2020-07-03 | 上海宏盾防伪材料有限公司 | Rapid manufacturing method of security certificate and security certificate card thereof |
-
2018
- 2018-02-06 CN CN201820219262.0U patent/CN208085349U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624298A (en) * | 2019-01-11 | 2019-04-16 | 深圳凯和科技有限公司 | Method for adhering film |
| CN111361328A (en) * | 2020-03-17 | 2020-07-03 | 上海宏盾防伪材料有限公司 | Rapid manufacturing method of security certificate and security certificate card thereof |
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