CN113442622A - Electrochemical aluminum hot stamping foil suitable for offset printing cold stamping technology and preparation method thereof - Google Patents
Electrochemical aluminum hot stamping foil suitable for offset printing cold stamping technology and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
- B41M5/0356—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic characterised by the inks used for printing the pattern on the temporary support or additives therefor, e.g. dyes, transferable compounds, binders or transfer promoting additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/0253—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using a chemical colour-forming ink, e.g. chemical hectography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
- B44C1/1729—Hot stamping techniques
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- 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
- C09D133/04—Homopolymers or copolymers of esters
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- 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
- C09D7/63—Additives non-macromolecular organic
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- 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
- C09D7/65—Additives macromolecular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/10—Post-imaging transfer of imaged layer; transfer of the whole imaged layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/40—Cover layers; Layers separated from substrate by imaging layer; Protective layers; Layers applied before imaging
Abstract
The invention provides an electrochemical aluminum hot stamping foil suitable for an offset printing cold stamping technology and a preparation method thereof. The dyeing layer comprises the following components: 15 to 20.5 percent of organosilicon modified acrylic resin, 30.2 to 35 percent of thermoplastic methacrylic resin, 25 to 27.5 percent of butanone, 15 to 20 percent of butyl ester, 2 to 2.5 percent of toner, 0.5 to 0.8 percent of active agent and 0.7 to 1.3 percent of modifier. The dyeing layer resin of the electrochemical aluminum hot stamping foil is composed of organic silicon modified acrylic resin and thermoplastic methacrylic resin, and the activator and the modifier are added simultaneously, so that the film breaking force of the dyeing layer is reduced, and the prepared electrochemical aluminum hot stamping foil has the advantages of small stripping force and good transferability; meanwhile, the preparation cost of the alumite hot stamping foil is considered, the hot stamping foil can be suitable for the offset printing cold stamping technology, the pollution to the environment in the process of manufacturing the metal printing plate is avoided, and the cold stamping speed is high.
Description
Technical Field
The invention relates to the technical field of alumite hot stamping foils, in particular to an alumite hot stamping foil suitable for an offset printing cold stamping technology and a preparation method thereof.
Background
The alumite thermoprinting foil is widely applied to the fields of high-grade and exquisite packaging decoration, trademarks, book covers and other printed matters, as well as technical and cultural articles, household appliances, building decoration and the like, and is also widely applied to high-grade packaging materials such as greeting cards, cigarette labels, spring festival scrolls, medicines, cosmetics and the like. With the development of science and technology and the continuous improvement of the living standard of materials, people have more individuation and diversification requirements on the printed matters, and put forward higher requirements on the practicability, environmental protection and artistry of the printed products. The hot stamping technology is one of the most common surface finishing processing technologies, and the hot stamping technology and the electrochemical aluminum hot stamping foil are unprecedented in development due to the fact that the hot stamping technology can effectively improve the additional values of printed matters and packaged products and the breakthrough of the cold stamping technology and the digital hot stamping technology.
The traditional hot stamping technology is hot stamping, and hot melt adhesive is coated on the back surface of an used electrochemical aluminum hot stamping foil in advance; when in hot stamping, the hot melt adhesive is melted by the high temperature and the pressure of the hot stamping roller, so that the hot stamping pattern is transferred to the printed matter. In the cold stamping technology developed in recent years, a layer of UV curing adhesive is printed on the position needing hot stamping on the surface of a printed matter in advance in a printing mode; when in hot stamping, under the pressure action of a hot stamping roller, the hot stamping foil patterns are adhered to a printed matter by the viscosity of the UV adhesive; the hot stamping foil used by the cold stamping technology does not need to be precoated with hot-melt transfer adhesive, does not need to be prefabricated with a hot stamping plate, and a hot stamping roller does not need to be heated in the hot stamping process.
The cold stamping technology not only solves the process problems which are difficult to solve in the past in many printing industries, but also more importantly saves energy and avoids the pollution to the environment in the process of manufacturing the metal printing plate. Compared with the traditional hot stamping technology, the cold stamping technology has the advantages that the finest printed line precision can reach 0.06mm, the fine and simple style can be presented perfectly, the gradual-change printing effect is realized, the differentiation new product is created, and the increasingly complex personalized requirements of consumers are met. Most of the hot stamping foils on the market are only suitable for hot stamping process, and if the hot stamping foils are directly applied to cold stamping process, the problem of large peeling force exists, so that the hot stamping speed is reduced; meanwhile, when the external light source of the aluminum plating layer is low, the color of the aluminum plating layer is dark, and the overall thickness of the aluminum plating layer is consistent, so that the aluminum plating layer is poor in adhesion, easy to fall off and short in service life when the edge of the aluminum plating layer is stamped.
Patent CN109515053A discloses a method for preparing an electrochemical aluminum foil for cold stamping technology, but the technology of the electrochemical aluminum foil cannot meet the higher requirements of the cold stamping process at the present stage, such as the requirements of large area, fine lines, high speed stamping, no gold flash and the like.
Disclosure of Invention
The invention aims to provide an electrochemical aluminum hot stamping foil suitable for an offset printing cold stamping technology and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an alumite hot stamping foil suitable for offset printing cold stamping technology comprises a sheet base layer, an isolation layer, a dyeing layer, a fluorescent layer, an aluminized base layer and a protective layer; and an isolation layer, a dyeing layer, a fluorescent layer, an aluminized base layer and a protective layer are sequentially and uniformly coated on the substrate base layer, wherein the dyeing layer comprises the following components in percentage by weight:
15 to 20.5 percent of organosilicon modified acrylic resin, 30.2 to 35 percent of thermoplastic methacrylic resin, 25 to 27.5 percent of butanone, 15 to 20 percent of butyl ester, 2 to 2.5 percent of toner, 0.5 to 0.8 percent of active agent and 0.7 to 1.3 percent of modifier.
As a preferred embodiment of the present invention, the fluorescent layer is interposed between the dyed layer and the aluminum-plated base layer.
As a preferred technical solution of the present invention, the aluminum-plated base layer includes a first aluminum-plated layer and a second aluminum-plated layer, and the second aluminum-plated layer is disposed on an outer ring of the first aluminum-plated layer.
As a preferable technical scheme of the invention, the active agent is one or a mixture of polyether modified polysiloxane, disodium cocomonoethanolamide sulfosuccinate and fatty alcohol-polyoxyethylene ether.
As a preferred technical scheme of the invention, the modifier is one or a mixture of methyl methacrylate-butadiene-styrene copolymer, styrene-butadiene-styrene triblock copolymer and acrylonitrile-butadiene-styrene copolymer.
A preparation method of an alumite hot stamping foil suitable for an offset printing cold stamping technology comprises the following steps:
s1, coating release agent: coating an isolation layer on the film base layer;
s2, coating resin paint: coating a dyeing layer on the isolation layer;
s3, coating phosphor: coating a fluorescent layer on the dyeing layer;
s4, laser aluminizing: pressing a laser pattern on the fluorescent layer to form an image, then performing an aluminum plating process, and evaporating two aluminum layers on the fluorescent layer to obtain an aluminum plating base layer;
s5, coating protective glue: and coating a protective layer on the aluminized base layer.
In S1, a roller with the size of 150-.
As a preferred technical scheme of the invention, in S2, a 200-mesh 350-mesh plate roller is adopted for coating the resin coating, and the dry coating amount is 1.5 +/-0.05 g per square meter.
As a preferred technical scheme of the invention, in S3, the coating of the fluorescent layer is printed by adopting a 100-mesh 150-mesh plate roller, and the coating amount is 0.5g +/-0.02 per square meter.
As a preferred technical scheme of the invention, in S5, the coating protection glue is printed by adopting a 150-mesh plate roller with 180 meshes, and the dry coating amount is 0.85 +/-0.05 g/square meter.
The invention has the beneficial effects that:
1. the dyeing layer resin of the alumite hot stamping foil is composed of organic silicon modified acrylic resin and thermoplastic methacrylic resin, and the activator and the modifier are added, so that the film breaking force of the dyeing layer is reduced, the prepared alumite hot stamping foil has the advantages of small peeling force and good transferability, the preparation cost of the alumite hot stamping foil is considered, the use cost is low, the alumite hot stamping foil can be suitable for an offset printing cold stamping technology, the pollution to the environment in the process of manufacturing a metal printing plate is avoided, the environmental protection benefit is remarkable, the energy is saved, and the cold stamping speed is high.
2. The alumite hot stamping foil is provided with the fluorescent layer between the dyeing layer and the aluminized base layer, can absorb weak light and emit fluorescence, and shows metallic luster after being reflected by the aluminized layer, so that a gold stamping effect with excellent metallic luster can be realized under weak light, and the aluminized base layer is composed of the first aluminized layer and the second aluminized layer with different thicknesses, so that the edge of the alumite hot stamping foil is stamped and is more attached.
Drawings
FIG. 1 is a schematic structural diagram of an electrochemical aluminum stamping foil according to the present invention.
In the figure: 1. a sheet base layer; 2. an isolation layer; 3. a dyeing layer; 4. a fluorescent layer; 5. aluminizing a base layer; 6. and a protective layer.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, the invention provides an electrochemical aluminum hot stamping foil suitable for offset printing cold stamping technology, which comprises a base sheet layer (1), an isolation layer (2), a dyeing layer (3), a fluorescent layer (4), an aluminum-plated base layer (5) and a protection layer (6), wherein the isolation layer (2), the dyeing layer (3), the fluorescent layer (4), the aluminum-plated base layer (5) and the protection layer (6) are sequentially and uniformly coated on the base sheet layer (1), and the dyeing layer (3) comprises the following components in percentage by weight:
15 to 20.5 percent of organosilicon modified acrylic resin, 30.2 to 35 percent of thermoplastic methacrylic resin, 25 to 27.5 percent of butanone, 15 to 20 percent of butyl ester, 2 to 2.5 percent of toner, 0.5 to 0.8 percent of active agent and 0.7 to 1.3 percent of modifier.
The aluminized base layer (5) comprises a first aluminized layer and a second aluminized layer, the second aluminized layer is arranged on the outer ring of the first aluminized layer, and the fluorescent layer (4) is arranged between the dyeing layer (3) and the aluminized base layer (5).
The active agent is one or a mixture of polyether modified polysiloxane, disodium cocomonoethanolamide sulfosuccinate and fatty alcohol-polyoxyethylene ether.
The modifier is an impact modifier, and the impact modifier is one or a mixture of methyl methacrylate-butadiene-styrene copolymer, styrene-butadiene-styrene ternary block copolymer and acrylonitrile-butadiene-styrene copolymer.
Example 1:
the embodiment provides a preparation method of an alumite hot stamping foil suitable for an offset cold stamping technology, which comprises the following steps:
s1, coating release agent: coating an isolating layer on a sheet base layer, printing by a 150-mesh plate roller, and performing wet coating in an amount of 4.8g +/-0.5 per square meter;
specifically, the specific formula of the release agent is as follows: 1% emulsified water-based wax, 50% absolute ethyl alcohol and 49% deionized water;
s2, coating resin paint: coating a dyeing layer on the isolating layer, printing by using a 200-mesh and 350-mesh plate roller, wherein the dry coating amount is 1.5 +/-0.05 g per square meter;
specifically, the resin coating is formed by uniformly mixing and stirring 15% of organic silicon modified acrylic resin, 35% of thermoplastic methacrylic resin, 25% of butanone, 15% of butyl ester and 2% of toner, and then adding 0.5% of active agent and 0.7% of modifier;
wherein the activating agent is polyether modified polysiloxane, and the modifying agent is methyl methacrylate-butadiene-styrene copolymer;
s3, coating phosphor: coating a fluorescent layer on the dyeing layer, printing by a 100-mesh plate roller, and coating the fluorescent layer with the coating amount of 0.5g +/-0.02 per square meter;
specifically, the fluorescent agent mainly comprises a fluorescent whitening agent, and has the effects of converting invisible ultraviolet radiation absorbed by a product into violet fluorescent radiation, complementing the ultraviolet radiation with original yellow radiation to form white light, improving the whiteness of the product under sunlight, selecting the fluorescent whitening agent BC, wherein the fluorescent whitening agent BC is faint yellow powder in appearance, is similar to the standard in color light, is dissolved in water to form blue fluorescence, has the water-insoluble impurity content of 0.5 percent, has the intensity of 1005 of the standard product, has the fineness (the residue content passing through a 100-mesh sieve) of 5 percent, has the yellowing point of 5 percent and has the moisture content of 5 percent;
s4, laser aluminizing: pressing a laser pattern on the fluorescent layer to form an image, then performing an aluminum plating process, and evaporating two aluminum layers on the fluorescent layer to obtain an aluminum plating base layer;
specifically, the aluminized base layer is formed by two-step evaporation, a first aluminized layer is evaporated firstly, a second aluminized layer positioned on the outer ring of the first aluminized layer is evaporated, and evaporation time and evaporation amount are controlled, so that the evaporation thickness of the second aluminized layer is smaller than that of the first aluminized layer;
s5, coating protective glue: coating a protective layer on the aluminum-plated base layer, printing by a 150-mesh plate roller, and performing dry coating with the dry coating amount of 0.85 +/-0.05 g per square meter.
Example 2:
the embodiment of the invention provides a preparation method of an alumite hot stamping foil suitable for an offset cold stamping technology, which comprises the following steps:
s1, coating release agent: coating an isolation layer on a sheet base layer, printing by a 180-mesh plate roller, and performing wet coating in an amount of 4.8g +/-0.5 per square meter;
s2, coating resin paint: coating a dyeing layer on the isolating layer, printing by a 250-mesh plate roller, and performing dry coating with the dry coating amount of 1.5 +/-0.05 g per square meter;
specifically, the resin coating is formed by uniformly mixing and stirring 18% of organic silicon modified acrylic resin, 33% of thermoplastic methacrylic resin, 26% of butanone, 17% of butyl ester and 2.2% of toner, and then adding 0.5% of an active agent and 0.7% of a modifier;
wherein the activator is prepared by mixing disodium cocomonoethanolamide sulfosuccinate and fatty alcohol-polyoxyethylene ether in equal proportion, and the modifier is prepared by mixing styrene-butadiene-styrene triblock copolymer and acrylonitrile-butadiene-styrene copolymer in equal proportion;
s3, coating phosphor: coating a fluorescent layer on the dyeing layer, printing by a 100-mesh plate roller, and coating the fluorescent layer with the coating amount of 0.5g +/-0.02 per square meter;
specifically, the fluorescent agent was the same as in example 1;
s4, laser aluminizing: pressing a laser pattern on the fluorescent layer to form an image, then performing an aluminum plating process, and evaporating two aluminum layers on the fluorescent layer to obtain an aluminum plating base layer;
specifically, the aluminum-plated base layer is formed by two-step evaporation, namely a first aluminum-plated layer is evaporated, a second aluminum-plated layer positioned on the outer ring of the first aluminum-plated layer is evaporated, and the evaporation time and the evaporation amount are controlled, so that the evaporation thickness of the second aluminum-plated layer is smaller than that of the first aluminum-plated layer, the coating amount of the first aluminum-plated layer is controlled to be 4.5g +/-0.5 per square meter, and the coating amount of the second aluminum-plated layer is controlled to be 1.5g +/-0.5 per square meter;
s5, coating protective glue: the protective layer is coated on the aluminized base layer, and the protective layer is printed by a 150-mesh plate roller with the dry coating amount of 0.85 +/-0.05 g per square meter.
Example 3:
the embodiment of the invention provides a preparation method of an alumite hot stamping foil suitable for an offset cold stamping technology, which comprises the following steps:
s1, coating release agent: coating an isolating layer on a sheet base layer, printing by a 200-mesh plate roller, and performing wet coating in an amount of 4.8g +/-0.5 per square meter;
s2, coating resin paint: coating a dyeing layer on the isolating layer, printing by a 350-mesh plate roller, and performing dry coating with the dry coating amount of 1.5 +/-0.05 g per square meter;
specifically, the resin coating is formed by uniformly mixing and stirring 20.5% of organosilicon modified acrylic resin, 30.2% of thermoplastic methacrylic resin, 27.5% of butanone, 20% of butyl ester and 2.5% of toner, and then adding 0.8% of active agent and 1.3% of modifier;
wherein the activator is formed by mixing polyether modified polysiloxane, coconut monoethanolamide disodium sulfosuccinate and fatty alcohol-polyoxyethylene ether in equal proportion, and the modifier is formed by mixing methyl methacrylate-butadiene-styrene copolymer, styrene-butadiene-styrene triblock copolymer and acrylonitrile-butadiene-styrene copolymer in equal proportion;
s3, coating phosphor: coating a fluorescent layer on the dyeing layer, printing by using a 100-plus-150-mesh plate roller, wherein the coating amount is 0.5g +/-0.02 per square meter;
specifically, the fluorescent agent was the same as in example 1;
s4, laser aluminizing: pressing a laser pattern on the fluorescent layer to form an image, then performing an aluminum plating process, and evaporating two aluminum layers on the fluorescent layer to obtain an aluminum plating base layer;
specifically, the aluminum-plated base layer is formed by two-step evaporation, namely a first aluminum-plated layer is evaporated, a second aluminum-plated layer positioned on the outer ring of the first aluminum-plated layer is evaporated, the evaporation time and the evaporation amount are controlled, the evaporation thickness of the second aluminum-plated layer is smaller than that of the first aluminum-plated layer, the coating amount of the first aluminum-plated layer is controlled to be 4.5g +/-0.5 g/square meter, and the coating amount of the second aluminum-plated layer is controlled to be 2.5g +/-0.5 g/square meter;
s5, coating protective glue: the protective layer is coated on the aluminized base layer, and the protective layer is printed by a 150-mesh plate roller with the dry coating amount of 0.85 +/-0.05 g per square meter.
Comparative example 1:
a preparation method of an alumite hot stamping foil suitable for an offset printing cold stamping technology comprises the following steps:
s1, coating release agent: coating an isolating layer on a sheet base layer, printing by a 200-mesh plate roller, and performing wet coating in an amount of 4.8g +/-0.5 per square meter;
s2, coating resin paint: coating a dyeing layer on the isolating layer, printing by a 350-mesh plate roller, and performing dry coating with the dry coating amount of 1.5 +/-0.05 g per square meter;
specifically, the resin coating is formed by uniformly mixing and stirring 20.5% of organosilicon modified acrylic resin, 30.2% of thermoplastic methacrylic resin, 27.5% of butanone, 20% of butyl ester and 2.5% of toner, and then adding no active agent or modifier;
s3, coating phosphor: coating a fluorescent layer on the dyeing layer, printing by using a 100-plus-150-mesh plate roller, wherein the coating amount is 0.5g +/-0.02 per square meter;
specifically, the fluorescent agent was the same as in example 1;
s4, laser aluminizing: pressing a laser pattern on the fluorescent layer to form an image, then performing an aluminum plating process, and evaporating two aluminum layers on the fluorescent layer to obtain an aluminum plating base layer;
specifically, the aluminum-plated base layer is formed by two-step evaporation, namely a first aluminum-plated layer is evaporated, a second aluminum-plated layer positioned on the outer ring of the first aluminum-plated layer is evaporated, the evaporation time and the evaporation amount are controlled, the evaporation thickness of the second aluminum-plated layer is smaller than that of the first aluminum-plated layer, the coating amount of the first aluminum-plated layer is controlled to be 4.5g +/-0.5 g/square meter, and the coating amount of the second aluminum-plated layer is controlled to be 2.5g +/-0.5 g/square meter;
s5, coating protective glue: the protective layer is coated on the aluminized base layer, and the protective layer is printed by a 150-mesh plate roller with the dry coating amount of 0.85 +/-0.05 g per square meter.
4 kinds of electrochemical aluminum hot stamping foil samples are obtained through the embodiments 1-3 and the comparative example 1, and detection item data indexes such as cold stamping speed, VOCs, stripping value, adhesion force and the like are obtained through an actual offset cold stamping test and are shown in the following table 1:
TABLE 1 Cold stamping test data for examples and comparative examples
From the above examples 1-3 to the comparative example 1, with the increase of the addition ratio of the organic silicon modified acrylic resin, the stripping force of the prepared electrochemical aluminum hot stamping foil is smaller, and the transferability is better. From example 3 to comparative example 1, the prepared electrochemical aluminum stamping foil dyeing layer has higher film breaking force when no activator or modifier is added. Meanwhile, from the embodiment 2 to the embodiment 3, the coating amount of the first aluminum plating layer in the embodiment 2 is 4.5g +/-0.5 per square meter, the coating amount of the second aluminum plating layer is 1.5g +/-0.5 per square meter, the coating amount of the first aluminum plating layer in the embodiment 3 is 4.5g +/-0.5 per square meter, and the coating amount of the second aluminum plating layer is 2.5g +/-0.5 per square meter; in particular, when the first aluminum plating layer is applied in an amount of 4.5g +/-0.5 per square meter and the second aluminum plating layer is applied in an amount of 2.5g +/-0.5 per square meter, the impression is more uniform because the first aluminum plating layer and the second aluminum plating layer are not applied in a larger amount as much as possible.
The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (10)
1. The utility model provides an electrochemical aluminium stamping foil suitable for offset printing cold wave technique, a serial communication port, electrochemical aluminium stamping foil includes piece basic unit (1), isolation layer (2), dyeing layer (3), fluorescent layer (4), aluminize basic unit (5) and protective layer (6), and on piece basic unit (1), evenly coated in proper order has isolation layer (2), dyeing layer (3), fluorescent layer (4), aluminize basic unit (5) and protective layer (6), dyeing layer (1) constitutes as follows according to weight percent:
15 to 20.5 percent of organosilicon modified acrylic resin, 30.2 to 35 percent of thermoplastic methacrylic resin, 25 to 27.5 percent of butanone, 15 to 20 percent of butyl ester, 2 to 2.5 percent of toner, 0.5 to 0.8 percent of active agent and 0.7 to 1.3 percent of modifier.
2. The foil of claim 1, wherein the foil is selected from the group consisting of: wherein the fluorescent layer (4) is arranged between the dyeing layer (3) and the aluminized base layer (5).
3. The foil of claim 1, wherein the foil is selected from the group consisting of: the aluminized base layer (5) comprises a first aluminized layer and a second aluminized layer, and the second aluminized layer is arranged on an outer ring of the first aluminized layer.
4. The foil of claim 1, wherein the foil is selected from the group consisting of: the active agent is one or a mixture of polyether modified polysiloxane, disodium cocomonoethanolamide sulfosuccinate and fatty alcohol-polyoxyethylene ether.
5. The foil of claim 1, wherein the foil is selected from the group consisting of: the modifier is one or a mixture of methyl methacrylate-butadiene-styrene copolymer, styrene-butadiene-styrene ternary block copolymer and acrylonitrile-butadiene-styrene copolymer.
6. A preparation method of an alumite hot stamping foil suitable for an offset printing cold stamping technology is characterized by comprising the following steps: the preparation method of the alumite hot stamping foil comprises the following steps:
s1), coating release agent: coating an isolation layer on the film base layer;
s2), coating resin paint: coating a dyeing layer on the isolation layer;
s3), coating phosphor: coating a fluorescent layer on the dyeing layer;
s4), laser aluminizing: pressing a laser pattern on the fluorescent layer to form an image, then performing an aluminum plating process, and evaporating two aluminum layers on the fluorescent layer to obtain an aluminum plating base layer;
s5), coating protective glue: and coating a protective layer on the aluminized base layer.
7. The method for preparing an electrochemical aluminum hot stamping foil suitable for offset cold stamping technology as claimed in claim 6, wherein in S1, the coating release agent is printed by using a 150-mesh plate roller, and the wet coating amount is 4.8g +/-0.5 per square meter.
8. The method for preparing an electrochemical aluminum hot stamping foil suitable for the offset cold stamping technology as claimed in claim 6, wherein in S2, the coating resin coating is printed by using a 200-mesh 350-mesh plate roller, and the dry coating amount is 1.5 ± 0.05 g/square meter.
9. The method for preparing an electrochemical aluminum hot stamping foil suitable for offset cold stamping technology as claimed in claim 6, wherein in S3, the coating fluorescent layer is printed by using a 100-mesh 150-mesh plate roller, and the coating amount is 0.5g +/-0.02 per square meter.
10. The method for preparing an electrochemical aluminum hot stamping foil suitable for the offset cold stamping technology as claimed in claim 6, wherein in S5, the coating protection glue is printed by using a 150-mesh plate roller, and the dry coating amount is 0.85 ± 0.05 g/square meter.
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