CN114407547B - Washable anti-counterfeiting hot stamping film and preparation method thereof - Google Patents
Washable anti-counterfeiting hot stamping film and preparation method thereof Download PDFInfo
- Publication number
- CN114407547B CN114407547B CN202111637625.5A CN202111637625A CN114407547B CN 114407547 B CN114407547 B CN 114407547B CN 202111637625 A CN202111637625 A CN 202111637625A CN 114407547 B CN114407547 B CN 114407547B
- Authority
- CN
- China
- Prior art keywords
- layer
- imaging
- wear
- resistant protective
- protective layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/40—Manufacture
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Abstract
The invention discloses a washable anti-counterfeiting hot stamping film which comprises a substrate layer, a release layer, an imaging layer, a metal reflecting layer and an adhesive layer, wherein the substrate layer, the release layer, the imaging layer, the metal reflecting layer and the adhesive layer are sequentially arranged; a wear-resistant protective layer is arranged between the release layer and the imaging layer; the buffer layer is arranged between the wear-resistant protective layer and the imaging layer, the wear-resistant protective layer and the buffer layer are arranged between the imaging layer and the release layer, the wear-resistant protective layer has good wear-resistant, waterproof, weather-resistant and acid-base corrosion-resistant effects, the imaging layer can be protected, the imaging layer can effectively express patterns in a longer time, the buffer layer has good elasticity, the effect of blocking and buffering is achieved, the imaging layer is prevented from deforming and damaging the wear-resistant layer and the release layer in the imaging process, negative effects on the release effect and the wear-resistant effect of the finished anti-counterfeiting hot stamping film are further avoided, and the imaging effect of the finished hot stamping film is favorably improved.
Description
Technical Field
The invention belongs to the technical field of hot stamping films, and particularly relates to a washable anti-counterfeiting hot stamping film and a preparation method thereof.
Background
The hot stamping film is a technology for combining a laser holographic alumite with a hot stamping technology to form colorful laser holographic marks and anti-counterfeiting marks with three-dimensional patterns on the surface of a printed matter, and the technology can be added with a laser encryption and back anti-uncovering layer and is used for anti-counterfeiting of certificates, cards, bills, trademarks and the like.
In the prior art, a general structure of an anti-counterfeiting hot stamping film is a base film layer, a release layer, an imaging layer, a metal reflective layer and an adhesive layer which are sequentially arranged, wherein the imaging layer is a layer for carrying anti-counterfeiting information, the imaging layer is formed by coating an imaging layer coating on the release layer, and then recording the anti-counterfeiting information on the imaging layer in a hot pressing mode, a UV (ultraviolet) mould pressing mode and other modes.
Disclosure of Invention
The invention aims to provide a washable anti-counterfeiting hot stamping film and a preparation method thereof, and solves the problems that the anti-counterfeiting hot stamping film in the prior art is poor in imaging effect and the matching degree of a metal reflective layer and an image boundary of an imaging layer of a formed hot stamping film is poor.
The purpose of the invention can be realized by the following technical scheme:
a washable anti-counterfeiting hot stamping film comprises a substrate layer, a release layer, an imaging layer, a metal reflecting layer and an adhesive layer which are sequentially arranged;
the base material layer is a PE film, the PE film is made of medium-density polyethylene or high-density polyethylene, and the thickness of the PE film is 0.02-0.04mm;
a wear-resistant protective layer is arranged between the release layer and the imaging layer, and is formed by coating and drying wear-resistant protective paint;
a buffer layer is arranged between the wear-resistant protective layer and the imaging layer, and the buffer layer has a buffer effect, so that the wear-resistant protective layer is prevented from being deformed due to the fact that the imaging layer applies pressure to the wear-resistant protective layer in the imaging process, the wear-resistant effect of the imaging layer is prevented from being influenced, and the whole imaging effect is prevented from being influenced;
a corrosion-resistant protective layer is arranged between the adhesive layer and the metal reflecting layer;
the preparation method of the washable anti-counterfeiting hot stamping film comprises the following steps:
step one, coating a release layer on the surface of a substrate layer in a full-page manner;
secondly, coating a wear-resistant protective layer on the surface of the release layer, and coating a buffer layer after the wear-resistant protective layer is dried;
thirdly, coating an imaging layer on the surface of the buffer layer, and pressing an imaging microstructure on the surface of the imaging layer;
fourthly, manufacturing a metal reflecting layer on the surface of the imaging layer;
specifically, a layer of aluminum, namely a metal reflecting layer, is evaporated on the surface of the imaging layer through a vacuum aluminum plating machine, the thickness of the metal reflecting layer is 0.04-0.05 mu m, and the metal reflecting layer can reflect light rays to enable the imaging layer to present metal luster;
fifthly, coating a corrosion-resistant protective layer on the surface of the metal reflecting layer, wherein the corrosion-resistant protective layer shields the position where the aluminized layer needs to be reserved, the thickness of the corrosion-resistant protective layer is 1.2-1.8 mu m, after drying, adding the formed film into a sodium hydroxide solution with the pH value of 13-14 for treatment for a preset time, and then washing the film by deionized water and drying the film;
the step is used for removing the metal reflective layer which is not protected by the corrosion-resistant protective layer, so that an image with a certain shape is formed, the method can improve the image precision of the metal reflective layer, compared with the method of directly cutting the formed hot stamping film into a certain shape, the method has better operable complexity and fineness at the edge, the condition of layering at the edge of the image can not occur, the imaging effect can not be influenced, and the attaching degree of the metal reflective layer and the image layer pattern can not occur;
in practical application, only a part containing all image layers needs to be cut from the whole formed hot stamping film;
in one embodiment of the invention, an imaging protective layer is arranged between the metal reflecting layer and the imaging layer, and the imaging protective layer is transparent and alkali-resistant;
the alkali resistance of the imaging protective layer refers to: the imaging protective layer is not damaged in the alkali washing process of the metal reflecting layer, and the imaging protective layer is not discolored in the alkali washing process;
the imaging layer can be protected by arranging the imaging protective layer, so that the phenomenon that the imaging layer is damaged by alkali liquor to influence the imaging effect is avoided;
sixthly, coating a gum layer on the surfaces of the metal reflecting layer and the corrosion-resistant protective layer to obtain a formed washing-resistant hot stamping film;
it should be noted that the gum layer needs to cover the corrosion-resistant protective layer completely, so as to avoid influencing the adhesion effect of the formed water-washing-resistant hot stamping film.
The wear-resistant protective layer is prepared by processing the following raw materials in parts by weight:
20 to 35 parts of polyether polyol, 10 to 15 parts of hydroxyl acrylic resin, 5 to 10 parts of isocyanate cross-linking agent, 0.1 to 0.5 part of accelerant, 0.2 to 1 part of dispersing wetting agent, 5 to 10 parts of softener, 1 to 2 parts of thickening agent, 2 to 3 parts of brightener and 2.5 to 4 parts of nano titanium dioxide;
s11, adding polyether polyol and hydroxyl acrylic resin into a stirring kettle according to parts by weight, and uniformly stirring and mixing;
the polyether polyol comprises one or a mixture of at least two of polypropylene oxide polyol, polytetrahydrofuran diol and polyethylene oxide polyol;
the hydroxyl acrylic resin comprises one or a mixture of at least two of aliphatic hydroxyl acrylic resin and aromatic hydroxyl acrylic resin;
s12, adding a dispersing wetting agent, a softening agent, a thickening agent and a brightener into the stirred tank mixed in the first step, and stirring for 30min at the stirring speed of 350-600rpm;
dispersing wetting agents include one or a mixture of at least two of modesty DC396, bike BYK110 and bike BYK163;
the softener comprises one or a mixture of at least two of chlorinated paraffin, 4010 naphthenic oil, dibutyl phthalate and dioctyl phthalate;
the thickener comprises one or a mixture of at least two of Dow Corning SD-1, dow Corning SD-2 and Di Si Balong 6900-20 HX;
the brightener is one of alcohol light-based modified silicone oil and phenol light-based modified silicone oil;
s13, adding the isocyanate crosslinking agent and the accelerator into a stirring kettle, stirring for 50min at the stirring speed of 600-1000rpm;
the isocyanate crosslinking agent comprises one or a mixture of at least two of toluene diisocyanate, hexamethylene diisocyanate, diphenyldimethylene diisocyanate and isophorone diisocyanate.
The accelerant comprises one or a mixture of at least two of dibutyltin dilaurate, organic bismuth and dibutyltin diacetate.
S14, adding nano titanium dioxide into the product obtained in the third step, and stirring and dispersing to obtain the wear-resistant protective coating;
the nano titanium dioxide is subjected to surface treatment by a silane coupling agent, so that the compatibility of the nano titanium dioxide and an organic phase is improved, and the dispersion effect of the nano titanium dioxide is improved;
s15, coating the wear-resistant protective layer paint on the surface of the release layer and then drying to obtain the wear-resistant protective layer.
The wear-resistant protective layer adopts hydroxyl acrylic resin as base resin, has good hardness and weather resistance, can not yellow for a long time, has good waterproof effect, and the nano titanium dioxide has good ultraviolet absorption, reflection and scattering capabilities and can transmit visible light, so that the weather resistance of the wear-resistant protective layer can be further improved while the light transmission of the wear-resistant protective layer is not influenced;
the buffer layer is prepared by processing the following raw materials in parts by weight:
20-25 parts of thermoplastic acrylic resin, 6-8 parts of epoxy resin, 2-3 parts of a brightener, 16-19 parts of a solvent, 2.5-4 parts of nano titanium dioxide and 0.4-0.5 part of a silane coupling agent;
the softening point of the thermoplastic acrylic resin is 90-115 ℃, and the weight-average molecular weight is 4-9 ten thousand;
the solvent is prepared by uniformly mixing xylene and ethylene glycol diglycidyl ether according to the volume ratio of 1.3-1;
the brightener is one of alcohol light-based modified silicone oil and phenol light-based modified silicone oil;
the preparation process of the buffer layer comprises the following steps:
s21, adding the solvent, the thermoplastic acrylic resin and the epoxy resin into a reaction kettle according to the weight ratio, and stirring, mixing and dispersing uniformly to obtain a premix;
s22, stirring the premix obtained in the previous step at the rotating speed of 600-800r/min, adding the silane coupling agent, adding the nano titanium dioxide, and stirring at the rotating speed for 20-30min to uniformly disperse the nano titanium dioxide;
s23, stirring the mixed substance obtained in the last step at the rotating speed of 600-800r/min, uniformly adding a brightener into the mixed substance within 10-20min during stirring, adjusting the rotating speed to 800r/min after the brightener is completely added, and stirring until the mixture is uniformly mixed to obtain the wear-resistant protective layer paint;
s24, coating the wear-resistant protective layer paint on the surface of the release layer and then drying to obtain the buffer layer.
In an embodiment of the present invention, the raw material of the buffer layer further includes 5 to 8 parts by weight of a silicone resin, the silicone resin is added into the reaction kettle together with the thermoplastic acrylic resin in step S21 to perform a reaction treatment, and simultaneously an appropriate amount of a silicone resin solvent is correspondingly added into the reaction kettle to dilute the system after the silicone resin is added;
the organic silicon resin can further improve the weather resistance and the thermal oxidation stability of the buffer layer, so that the buffer layer cannot be quickly yellowed when working in a high-temperature and strong ultraviolet irradiation environment, and can keep good transparency for a long time;
adopt thermoplasticity organic silicon resin and epoxy resin film forming when guaranteeing acid and alkali-resistance, weather resistance and the light transmissivity of buffer layer, have good elasticity, play and block the effect of buffering, avoid the formation of image layer to the wearing layer and lead to the fact out of shape the destruction from the type layer at the formation of image in-process to cause negative effects from type effect and wear-resisting effect to off-the-shelf anti-fake thermoprint membrane.
The invention has the beneficial effects that:
(1) According to the invention, the wear-resistant protective layer and the buffer layer are arranged between the imaging layer and the release layer, wherein the wear-resistant protective layer and the buffer layer are both transparent structures, the expression of the pattern of the imaging layer is not influenced, the wear-resistant protective layer has good wear-resistant, waterproof, weather-resistant and acid-base corrosion-resistant effects, the imaging layer can be protected, the pattern can be effectively expressed in a longer time by the imaging layer, the buffer layer has good elasticity, the effect of blocking and buffering is achieved, the imaging layer is prevented from deforming and damaging the wear-resistant layer and the release layer in the imaging process, the negative influence on the release effect and the wear-resistant effect of the finished anti-counterfeiting hot stamping film is avoided, and the imaging effect of the finished hot stamping film is favorably improved;
(2) According to the method, the corrosion-resistant protective layer is coated on the back surface of the metal reflective layer before the back adhesive layer is coated, the metal reflective layer which is not protected by the corrosion-resistant protective layer is removed by alkali washing after drying, and then the back adhesive layer is coated, so that the image precision of the metal reflective layer can be improved, compared with the method that the formed hot stamping film is directly cut into a certain shape, the operable complexity and fineness of the edge are better, the image edge layering condition cannot occur, the imaging effect cannot be influenced, the attaching degree of the metal reflective layer and the image layer pattern is convenient, and the subsequent hot stamping film with a pattern in a certain shape can be conveniently cut;
(3) The buffer layer is formed by adopting the thermoplastic organic silicon resin and the epoxy resin, so that the acid and alkali resistance, the weather resistance and the light transmittance of the buffer layer are ensured, the buffer layer has good elasticity, the buffer blocking effect is achieved, and the imaging layer is prevented from deforming and damaging the wear-resistant layer and the release layer in the imaging process, so that the negative influence on the release effect and the wear-resistant effect of the finished anti-counterfeiting hot stamping film is avoided;
(4) The wear-resistant protective layer provided by the invention adopts the hydroxyl acrylic resin as the base resin, has good hardness and weather resistance, can not yellow for a long time, has a good waterproof effect, and the nano titanium dioxide has good ultraviolet absorption, reflection and scattering capabilities, can transmit visible light, and can further improve the weather resistance of the wear-resistant protective layer while not affecting the light transmission of the wear-resistant protective layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Example 1
A washable anti-counterfeiting hot stamping film comprises a substrate layer, a release layer, an imaging layer, a metal reflecting layer and an adhesive layer which are sequentially arranged;
the substrate layer is a PE film, the PE film is made of high-density polyethylene, and the thickness of the PE film is 0.03mm;
a wear-resistant protective layer is arranged between the release layer and the imaging layer;
a buffer layer is arranged between the wear-resistant protective layer and the imaging layer;
a corrosion-resistant protective layer is arranged between the adhesive layer and the metal reflecting layer;
the preparation method of the washable anti-counterfeiting hot stamping film comprises the following steps:
step one, coating a release layer on the surface of a substrate layer in a full-page manner;
secondly, coating a wear-resistant protective layer on the surface of the release layer, and coating a buffer layer after the wear-resistant protective layer is dried;
thirdly, coating an imaging layer on the surface of the buffer layer, and pressing an imaging microstructure on the surface of the imaging layer;
fourthly, manufacturing a metal reflecting layer on the surface of the imaging layer;
specifically, a layer of aluminum, namely a metal reflecting layer, is evaporated on the surface of the imaging layer by a vacuum aluminum plating machine, and the thickness of the metal reflecting layer is 0.04-0.05 μm;
fifthly, coating a corrosion-resistant protective layer on the surface of the metal reflecting layer, wherein the corrosion-resistant protective layer shields the position where the aluminized layer needs to be reserved, the thickness of the corrosion-resistant protective layer is 1.2-1.8 mu m, after drying, adding the formed film into a sodium hydroxide solution with the pH value of 13-14 to treat and remove the metal reflecting layer for protection, and then washing the metal reflecting layer by deionized water and drying the metal reflecting layer;
an imaging protective layer is arranged between the metal reflecting layer and the imaging layer, and is transparent and alkali-resistant;
sixthly, coating a gum layer on the surfaces of the metal reflecting layer and the corrosion-resistant protective layer to obtain a formed washing-resistant hot stamping film;
the back glue layer completely covers the corrosion-resistant protective layer;
the wear-resistant protective layer is prepared by processing the following raw materials in parts by weight:
25 parts of polyether polyol, 12 parts of hydroxyl acrylic resin, 7 parts of isocyanate cross-linking agent, 0.3 part of accelerator, 0.4 part of dispersing wetting agent, 7 parts of softener, 1.5 parts of thickening agent, 2 parts of brightener and 3 parts of nano titanium dioxide;
s11, adding polyether polyol and hydroxyl acrylic resin into a stirring kettle according to parts by weight, and uniformly stirring and mixing;
the polyether polyol is polypropylene oxide polyol;
the hydroxyl acrylic resin is aliphatic hydroxyl acrylic resin;
s12, adding a dispersing wetting agent, a softening agent, a thickening agent and a brightener into the stirred tank mixed in the first step, and stirring for 30min at the stirring speed of 350-600rpm;
the dispersing wetting agent is a D.E. DC396;
the softener is chlorinated paraffin;
the thickening agent is Dow Corning SD-1;
the brightener is alcohol light-based modified silicone oil;
s13, adding the isocyanate crosslinking agent and the accelerator into a stirring kettle, stirring for 50min at the stirring speed of 800rpm;
the isocyanate crosslinking agent is diphenyldimethylene diisocyanate.
The accelerant is dibutyltin diacetate.
S14, adding nano titanium dioxide into the product obtained in the third step, and stirring and dispersing to obtain the wear-resistant protective coating;
s15, coating the wear-resistant protective layer paint on the surface of the release layer and then drying to obtain the wear-resistant protective layer.
The buffer layer is prepared by processing the following raw materials in parts by weight:
20 parts of thermoplastic acrylic resin, 6 parts of epoxy resin, 2 parts of a brightener, 16 parts of a solvent, 3 parts of nano titanium dioxide and 0.4 part of a silane coupling agent;
the softening point of the thermoplastic acrylic resin is 95-100 ℃, and the weight average molecular weight is 7 ten thousand;
the solvent is prepared by uniformly mixing xylene and ethylene glycol diglycidyl ether according to the volume ratio of 1;
the brightener is alcohol light-based modified silicone oil;
the preparation process of the buffer layer comprises the following steps:
s21, adding the solvent, the thermoplastic acrylic resin and the epoxy resin into a reaction kettle according to the weight ratio, and stirring, mixing and dispersing uniformly to obtain a premix;
s22, stirring the premix obtained in the previous step at the rotating speed of 600r/min, adding the silane coupling agent, adding the nano titanium dioxide, and stirring at the rotating speed for 30min to uniformly disperse the nano titanium dioxide;
s23, stirring the mixed substance obtained in the last step at a rotating speed of 600r/min, uniformly adding a brightener into the mixed substance within 20min during stirring, and regulating the rotating speed to 800r/min after the brightener is completely added to the mixed substance to be stirred until the mixture is uniformly mixed to obtain the wear-resistant protective layer coating;
s24, coating the wear-resistant protective layer paint on the surface of the release layer and then drying to obtain the buffer layer.
The raw material of the buffer layer also comprises 5-8 parts by weight of organic silicon resin, the organic silicon resin and the thermoplastic acrylic resin are added into the reaction kettle together for reaction treatment in the step S21, and meanwhile, a proper amount of organic silicon resin solvent is correspondingly added into the reaction kettle.
Example 2
A washable anti-counterfeiting hot stamping film comprises a base material layer, a release layer, an imaging layer, a metal reflecting layer and an adhesive layer which are arranged in sequence;
the substrate layer is a PE film, the PE film is made of high-density polyethylene, and the thickness of the PE film is 0.03mm;
a wear-resistant protective layer is arranged between the release layer and the imaging layer;
a buffer layer is arranged between the wear-resistant protective layer and the imaging layer;
a corrosion-resistant protective layer is arranged between the adhesive layer and the metal reflecting layer;
the preparation method of the washable anti-counterfeiting hot stamping film comprises the following steps:
step one, coating a release layer on the surface of a substrate layer in a full-page manner;
secondly, coating a wear-resistant protective layer on the surface of the release layer, and coating a buffer layer after the wear-resistant protective layer is dried;
thirdly, coating an imaging layer on the surface of the buffer layer, and pressing an imaging microstructure on the surface of the imaging layer;
fourthly, manufacturing a metal reflecting layer on the surface of the imaging layer;
specifically, a layer of aluminum, namely a metal reflecting layer, is evaporated on the surface of the imaging layer by a vacuum aluminum plating machine, and the thickness of the metal reflecting layer is 0.04-0.05 μm;
fifthly, coating a corrosion-resistant protective layer on the surface of the metal reflecting layer, wherein the corrosion-resistant protective layer shields the position where the aluminized layer needs to be reserved, the thickness of the corrosion-resistant protective layer is 1.2-1.8 mu m, after drying, adding the formed film into a sodium hydroxide solution with the pH value of 13-14 for treatment, and then washing by deionized water and drying;
sixthly, coating a gum layer on the surface of the metal reflecting layer to obtain a formed washable hot stamping film;
the wear-resistant protective layer is prepared by processing the following raw materials in parts by weight:
30 parts of polyether polyol, 10 parts of hydroxyl acrylic resin, 9 parts of isocyanate cross-linking agent, 0.45 part of accelerator, 0.6 part of dispersing wetting agent, 8 parts of softener, 1.4 parts of thickening agent, 2.5 parts of brightener and 3.5 parts of nano titanium dioxide;
s11, adding polyether polyol and hydroxyl acrylic resin into a stirring kettle according to parts by weight, and uniformly stirring and mixing;
the polyether polyol is polyoxyethylene polyol;
the hydroxyl acrylic resin is aromatic hydroxyl acrylic resin;
s12, adding a dispersing wetting agent, a softening agent, a thickening agent and a brightener into the stirred tank mixed in the first step, and stirring for 30min at the stirring speed of 350-600rpm;
the dispersing wetting agent is bike BYK163;
the softener is dibutyl phthalate;
the thickening agent is Dow Corning SD-2;
the brightener is alcohol light-based modified silicone oil;
s13, adding the isocyanate crosslinking agent and the accelerator into a stirring kettle, stirring for 50min at the stirring speed of 1000rpm;
the isocyanate crosslinking agent is hexamethylene diisocyanate.
The accelerator is dibutyltin dilaurate.
S14, adding nano titanium dioxide into the product obtained in the third step, and stirring and dispersing to obtain the wear-resistant protective coating;
s15, coating the wear-resistant protective layer paint on the surface of the release layer and then drying to obtain the wear-resistant protective layer.
The buffer layer is prepared by processing the following raw materials in parts by weight:
25 parts of thermoplastic acrylic resin, 6 parts of epoxy resin, 2 parts of a brightener, 18 parts of a solvent, 3 parts of nano titanium dioxide and 0.5 part of a silane coupling agent;
the softening point of the thermoplastic acrylic resin is 95-100 ℃, and the weight-average molecular weight is 7 ten thousand;
the solvent is prepared by uniformly mixing xylene and ethylene glycol diglycidyl ether according to the volume ratio of 1;
the brightener is alcohol light-based modified silicone oil;
the preparation process of the buffer layer comprises the following steps:
s21, adding the solvent, the thermoplastic acrylic resin and the epoxy resin into a reaction kettle according to the weight ratio, and stirring, mixing and dispersing uniformly to obtain a premix;
s22, stirring the premix obtained in the previous step at the rotating speed of 800r/min, adding the silane coupling agent, adding the nano titanium dioxide, and stirring for 20-30min at the rotating speed to uniformly disperse the nano titanium dioxide;
s23, stirring the mixed substance obtained in the last step at the rotating speed of 800r/min, uniformly adding a brightener into the mixed substance within 20min during stirring, and regulating the rotating speed to 800r/min after the brightener is completely added to the mixed substance to be uniformly mixed to obtain the wear-resistant protective layer coating;
s24, coating the wear-resistant protective layer paint on the surface of the release layer and then drying to obtain the buffer layer.
Comparative example 1
A washable anti-counterfeiting hot stamping film comprises a base material layer, a release layer, an imaging layer, a metal reflecting layer and an adhesive layer which are arranged in sequence;
the substrate layer is a PE film, the PE film is made of high-density polyethylene, and the thickness of the PE film is 0.03mm;
a corrosion-resistant protective layer is arranged between the adhesive layer and the metal reflecting layer;
the preparation method of the washable anti-counterfeiting hot stamping film comprises the following steps:
step one, coating a release layer on the surface of a substrate layer in a full-page manner;
secondly, coating a wear-resistant protective layer on the surface of the release layer, and coating a buffer layer after the wear-resistant protective layer is dried;
thirdly, coating an imaging layer on the surface of the buffer layer, and pressing an imaging microstructure on the surface of the imaging layer;
fourthly, manufacturing a metal reflecting layer on the surface of the imaging layer;
specifically, a layer of aluminum, namely a metal reflecting layer, is evaporated on the surface of the imaging layer by a vacuum aluminum plating machine, and the thickness of the metal reflecting layer is 0.04-0.05 μm;
fifthly, coating a corrosion-resistant protective layer on the surface of the metal reflecting layer, wherein the corrosion-resistant protective layer shields the position where the aluminized layer needs to be reserved, the thickness of the corrosion-resistant protective layer is 1.2-1.8 mu m, after drying, adding the formed film into a sodium hydroxide solution with the pH value of 13-14 for treatment for preset time, and then washing by deionized water and drying;
in one embodiment of the invention, an imaging protective layer is arranged between the metal reflecting layer and the imaging layer, and the imaging protective layer is transparent and alkali-resistant;
and sixthly, coating a gum layer on the surfaces of the metal reflecting layer and the corrosion-resistant protective layer to obtain the formed water-washing-resistant hot stamping film.
Analysis of Experimental data and results
Testing the temperature resistance, ultraviolet resistance, water permeability and release effect of the hot stamping film prepared in each embodiment, wherein the testing condition of the temperature resistance is that the hot stamping film is treated at 50 ℃ for 8h, then cooled to 20 ℃ for 4h, and circulated for 10 times; the testing condition of the ultraviolet resistance is that a sample is irradiated by an ultraviolet fluorescent lamp at the temperature of 30 ℃, the irradiation is stopped for 4 hours after each 8 hours of irradiation, and the cycle is carried out for 16 times; the test condition of the water permeability is 0.4mpa and 2h; the test condition of the release effect is that 100 samples are selected and then released, the sample proportion with obvious adhesive residue after centrifugation and influencing pattern expression is observed, and the results are shown in the following table:
| examples | Temperature resistant | Ultraviolet resistance | Water permeability | Release effect |
| Example 1 | No discoloration | No discoloration | Is impervious to water | 1％ |
| Example 2 | No discoloration | No discoloration | Is impervious to water | 2％ |
| Comparative example 1 | No discoloration | No discoloration | Is impervious to water | 11％ |
The above results show that the anti-counterfeiting hot stamping film has good weather resistance, can be used for a long time, does not change color to influence pattern expression of the imaging layer, has good release effect, and does not have the situation that the pattern expression is influenced because the release layer is not cleanly peeled from the base material.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (8)
1. The utility model provides a resistant washing anti-fake thermoprint membrane, includes the substrate layer that sets gradually, leaves type layer, formation of image layer, metal reflection stratum and adhesive layer, its characterized in that:
a wear-resistant protective layer is arranged between the release layer and the imaging layer, and is formed by coating and drying wear-resistant protective paint;
a buffer layer is arranged between the wear-resistant protective layer and the imaging layer;
the buffer layer is prepared by processing the following raw materials in parts by weight:
20-25 parts of thermoplastic acrylic resin, 6-8 parts of epoxy resin, 16-19 parts of solvent, 2.5-4 parts of nano titanium dioxide and 0.4-0.5 part of silane coupling agent;
the preparation process of the buffer layer comprises the following steps:
s21, adding the solvent, the thermoplastic acrylic resin and the epoxy resin into a reaction kettle according to the weight ratio, and stirring, mixing and dispersing uniformly to obtain a premix;
s22, stirring the premix obtained in the previous step, adding the silane coupling agent, adding the nano titanium dioxide, and continuously stirring until the nano titanium dioxide is uniformly dispersed;
s23, uniformly adding a brightener into the product obtained in the previous step within 10-20min, and stirring until the brightener is uniformly mixed after being completely added to obtain the wear-resistant protective layer paint;
s24, coating the wear-resistant protective layer paint on the surface of the release layer and then drying to obtain a buffer layer;
the wear-resistant protective layer is prepared by processing the following raw materials in parts by weight:
20 to 35 portions of polyether polyol, 10 to 15 portions of hydroxyl acrylic resin, 5 to 10 portions of isocyanate cross-linking agent, 0.1 to 0.5 portion of accelerant, 0.2 to 1 portion of dispersing wetting agent, 5 to 10 portions of softening agent and 1 to 2 portions of thickening agent;
s11, adding polyether polyol and hydroxyl acrylic resin into a stirring kettle according to parts by weight, and uniformly stirring and mixing;
s12, adding a dispersing wetting agent, a softening agent, a thickening agent and a brightener into the stirred tank mixed in the first step, and stirring for 30min at the stirring speed of 350-600rpm;
s13, adding the isocyanate crosslinking agent and the accelerator into a stirring kettle, stirring for 50min at the stirring speed of 600-100rpm;
s14, adding nano titanium dioxide into the product obtained in the third step, and stirring and dispersing to obtain the wear-resistant protective coating;
s15, coating the wear-resistant protective layer paint on the surface of the release layer and then drying to obtain the wear-resistant protective layer.
2. The washable anti-counterfeiting hot stamping film as recited in claim 1, wherein the thermoplastic acrylic resin has a softening point of 90-115 ℃ and a weight-average molecular weight of 4-9 ten thousand; the solvent is prepared by uniformly mixing xylene and ethylene glycol diglycidyl ether according to the volume ratio of 1.3-1.
3. The washable anti-counterfeiting hot stamping film as recited in claim 1, wherein the buffer layer further comprises 2-3 parts by weight of a brightener, wherein the brightener is one of alcohol light-based modified silicone oil and phenol light-based modified silicone oil.
4. The washable anti-counterfeiting hot stamping film as recited in claim 1, wherein the raw material of the buffer layer further comprises 5-8 parts by weight of a silicone resin, and the silicone resin and the thermoplastic acrylic resin are added into the reaction kettle together for reaction treatment in step S21.
5. The washable anti-counterfeiting hot stamping film as claimed in claim 1, wherein the substrate layer is a PE film, the PE film is made of medium density polyethylene or high density polyethylene, and the thickness of the PE film is 0.02-0.04mm.
6. The washable anti-counterfeiting hot stamping film according to claim 5, wherein the raw materials of the wear-resistant protective layer further comprise 2-3 parts by weight of a brightener and 2.5-4 parts by weight of nano titanium dioxide.
7. The preparation method of the washable anti-counterfeiting hot stamping film according to any one of claims 1 to 6, which is characterized by comprising the following steps:
step one, coating a release layer on the surface of a substrate layer in a full-page manner;
secondly, coating a wear-resistant protective layer on the surface of the release layer, and coating a buffer layer after the wear-resistant protective layer is dried;
thirdly, coating an imaging layer on the surface of the buffer layer, and pressing and imaging the surface of the imaging layer;
fourthly, manufacturing a metal reflecting layer on the surface of the imaging layer;
fifthly, coating a corrosion-resistant protective layer on the surface of the metal reflecting layer, shielding the position where the aluminum coating layer needs to be reserved by the corrosion-resistant protective layer, adding the formed film into a sodium hydroxide solution with the pH value of 13-14 for treatment after drying, washing by deionized water and drying;
and sixthly, coating a gum layer on the surfaces of the metal reflecting layer and the corrosion-resistant protective layer to obtain the formed washing-resistant hot stamping film.
8. The method for preparing a washable anti-counterfeiting hot stamping film according to claim 7, wherein an imaging protective layer is arranged between the metal reflecting layer and the imaging layer, and the imaging protective layer is transparent and alkali-resistant, wherein alkali-resistant means that the imaging protective layer is not damaged in the alkali washing process of the metal reflecting layer, and the imaging protective layer is not discolored in the alkali washing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637625.5A CN114407547B (en) | 2021-12-29 | 2021-12-29 | Washable anti-counterfeiting hot stamping film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637625.5A CN114407547B (en) | 2021-12-29 | 2021-12-29 | Washable anti-counterfeiting hot stamping film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114407547A CN114407547A (en) | 2022-04-29 |
| CN114407547B true CN114407547B (en) | 2023-03-07 |
Family
ID=81270174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111637625.5A Active CN114407547B (en) | 2021-12-29 | 2021-12-29 | Washable anti-counterfeiting hot stamping film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114407547B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114958244B (en) * | 2022-05-06 | 2024-01-09 | 扬州市祥华新材料科技有限公司 | Colorful anti-counterfeiting electrochemical aluminum |
| CN116102930B (en) * | 2022-12-29 | 2023-09-12 | 广东邦固化学科技有限公司 | Protective layer coating for cold stamping film and preparation method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002090002A2 (en) * | 2001-05-07 | 2002-11-14 | Flex Products, Inc. | Methods for producing imaged coated articles by using magnetic pigments |
| CN102292190A (en) * | 2008-12-04 | 2011-12-21 | 嘉柏微电子材料股份公司 | Method to selectively polish silicon carbide films |
| CN102700285A (en) * | 2012-07-03 | 2012-10-03 | 云南荷乐宾防伪技术有限公司 | Method for producing optical variable device (OVD) two-dimensional code hot stamping foil through aluminum washing process |
| CN108973488A (en) * | 2018-09-05 | 2018-12-11 | 武汉华工图像技术开发有限公司 | A kind of holographic anti-counterfeiting hot stamping film and preparation method thereof |
| CN109228715A (en) * | 2018-08-21 | 2019-01-18 | 佛山市炬业科技有限公司 | A kind of heat transfer film and preparation method thereof |
| CN208646357U (en) * | 2018-08-06 | 2019-03-26 | 浙江宇狮包装材料有限公司 | A kind of novel anti-oxidation high glaze thermoprint anodized aluminium |
| CN109849546A (en) * | 2017-12-27 | 2019-06-07 | 浙江恒丰包装有限公司 | A kind of thermoprint picture and text anti-oxidative alumite thermoprinting foil |
| CN208993326U (en) * | 2018-09-05 | 2019-06-18 | 武汉华工图像技术开发有限公司 | A kind of holographic anti-counterfeiting hot stamping film and its antifake certificate card |
| CN211307993U (en) * | 2019-10-12 | 2020-08-21 | 江苏泰佳新材料科技有限公司 | Hot stamping film with elasticity |
| WO2020205053A1 (en) * | 2019-04-04 | 2020-10-08 | Wavefront Technology, Inc. | Optical structures providing dichroic effects |
| CN111806131A (en) * | 2020-07-21 | 2020-10-23 | 金华市子洋装饰材料有限公司 | Thermal transfer printing luminous film and preparation method thereof |
| CN112322202A (en) * | 2020-11-04 | 2021-02-05 | 江苏兴广包装科技有限公司 | Preparation method of corrosion-resistant and friction-resistant holographic laser hot stamping film |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2345849C (en) * | 2000-07-21 | 2006-10-03 | Target Technology Co., Llc. | Metal alloys for the reflective or the semi-reflective layer of an optical storage medium |
| JP2014159514A (en) * | 2013-02-19 | 2014-09-04 | Seiko Instruments Inc | Adhesive label, manufacturing method of adhesive label, and label issuance device |
| CN107399178B (en) * | 2017-08-08 | 2019-08-20 | 武汉华工图像技术开发有限公司 | A kind of holographic thermoprinted film of heatproof |
-
2021
- 2021-12-29 CN CN202111637625.5A patent/CN114407547B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002090002A2 (en) * | 2001-05-07 | 2002-11-14 | Flex Products, Inc. | Methods for producing imaged coated articles by using magnetic pigments |
| CN102292190A (en) * | 2008-12-04 | 2011-12-21 | 嘉柏微电子材料股份公司 | Method to selectively polish silicon carbide films |
| CN102700285A (en) * | 2012-07-03 | 2012-10-03 | 云南荷乐宾防伪技术有限公司 | Method for producing optical variable device (OVD) two-dimensional code hot stamping foil through aluminum washing process |
| CN109849546A (en) * | 2017-12-27 | 2019-06-07 | 浙江恒丰包装有限公司 | A kind of thermoprint picture and text anti-oxidative alumite thermoprinting foil |
| CN208646357U (en) * | 2018-08-06 | 2019-03-26 | 浙江宇狮包装材料有限公司 | A kind of novel anti-oxidation high glaze thermoprint anodized aluminium |
| CN109228715A (en) * | 2018-08-21 | 2019-01-18 | 佛山市炬业科技有限公司 | A kind of heat transfer film and preparation method thereof |
| CN108973488A (en) * | 2018-09-05 | 2018-12-11 | 武汉华工图像技术开发有限公司 | A kind of holographic anti-counterfeiting hot stamping film and preparation method thereof |
| CN208993326U (en) * | 2018-09-05 | 2019-06-18 | 武汉华工图像技术开发有限公司 | A kind of holographic anti-counterfeiting hot stamping film and its antifake certificate card |
| WO2020205053A1 (en) * | 2019-04-04 | 2020-10-08 | Wavefront Technology, Inc. | Optical structures providing dichroic effects |
| CN211307993U (en) * | 2019-10-12 | 2020-08-21 | 江苏泰佳新材料科技有限公司 | Hot stamping film with elasticity |
| CN111806131A (en) * | 2020-07-21 | 2020-10-23 | 金华市子洋装饰材料有限公司 | Thermal transfer printing luminous film and preparation method thereof |
| CN112322202A (en) * | 2020-11-04 | 2021-02-05 | 江苏兴广包装科技有限公司 | Preparation method of corrosion-resistant and friction-resistant holographic laser hot stamping film |
Non-Patent Citations (1)
| Title |
|---|
| 电化铝烫印工艺技术控制之我见;康启来;《广东印刷》;20080801(第04期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114407547A (en) | 2022-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114407547B (en) | Washable anti-counterfeiting hot stamping film and preparation method thereof | |
| CN105038622B (en) | Adhesive film and adhesive composition, the Polarizer and optical display of Polarizer | |
| CN106443857B (en) | Polarization plates, composite polarizing plate and liquid crystal display device | |
| RU2663080C1 (en) | Optical fiber core and ribbon fiber optic cable core | |
| JP2021179629A (en) | Polarization lens and polarized glasses using the same | |
| CN112239624B (en) | Ophthalmic lens comprising a visible light-cured color-changing coating | |
| TWI691563B (en) | Photocurable coating composition and application thereof | |
| JP7195320B2 (en) | Polarizing plate-carrier film laminate, method for producing polarizing plate-carrier film laminate, and method for producing polarizing plate | |
| EP3702154B1 (en) | Polarizing plate, polarizing plate-carrier film laminate, method for preparing polarizing plate-carrier film laminate, method for preparing polarizing plate and active energy ray curable composition | |
| JP7066021B2 (en) | Resin molded body and blue light cut laminated body | |
| CN107129565A (en) | A kind of preparation technology of aqueous polyurethane emulsion | |
| KR20200083358A (en) | Silicone based adhesive protective film and optical member comprising the same | |
| DE102011077043A1 (en) | Producing eyeglass lens having primer layer and hard coating layer, comprises applying resin composition based on water in which the resin composition is dispersed or dissolved in solvent, and directly applying liquid for hard coating | |
| KR102590266B1 (en) | Coated Optical Articles | |
| US11572448B2 (en) | Polarizing plate-carrier film laminate, method for producing same, method for producing polarizing plate using same, and polarizing plate | |
| KR20190094946A (en) | Heat-curable composition, primer layer comprising cured product of the heatcurable composition and deco film comprising the same | |
| KR102645754B1 (en) | Preparation method of film and film | |
| CN109705723A (en) | A kind of solvent-free white fluorescent effect UV coating material and preparation method thereof | |
| CN106700103B (en) | Smart card substrate with laser effect and preparation process thereof | |
| CN111303381B (en) | Polyurethane color-changing lens with refractive index of 1.60 and preparation method thereof | |
| JP2004346155A (en) | Resin composition for optical material | |
| CN112094531A (en) | UV offset printing snowflake ink and preparation method thereof | |
| KR20210110108A (en) | a method for manufacturing colored solar module using ultraviolet curing resin binder | |
| US20080118650A1 (en) | Photochromic material and process for its preparation | |
| JPS6071630A (en) | Photosetting epoxy resin composition for artistic ornament |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |