CN114211894B - Color re-transfer printing film for transparent soft label base material - Google Patents

Color re-transfer printing film for transparent soft label base material Download PDF

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CN114211894B
CN114211894B CN202111534499.0A CN202111534499A CN114211894B CN 114211894 B CN114211894 B CN 114211894B CN 202111534499 A CN202111534499 A CN 202111534499A CN 114211894 B CN114211894 B CN 114211894B
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color
parts
coating
substrate
resin
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CN114211894A (en
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汪鑫
吴兴泽
段文欣
唐国初
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Hunan Dingyi Zhiyuan Technology Development Co Ltd
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Hunan Dingyi Zhiyuan Technology Development Co Ltd
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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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
    • 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
    • C09D127/00—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 a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/04—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C09D127/06—Homopolymers or copolymers of vinyl chloride
    • 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
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/42—Gloss-reducing agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00—Characterised by the use of 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 a halogen; Derivatives of such polymers
    • C08J2427/02—Characterised by the use of 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 a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/04—Characterised by the use of 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 a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2427/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a color re-transfer printing film for a transparent soft label substrate, and belongs to the technical field of soft label printing. The color re-transfer printing film for the transparent soft label base material comprises a substrate, a protective layer and a pattern receiving layer which are sequentially attached from top to bottom; the protective layer is formed by coating the following raw materials in parts by weight: 50-90 parts of first resin and 10-50 parts of pigment; the pattern receiving layer is formed by coating the following raw materials in parts by weight: 99 parts of second resin and 1 part of matting powder. Has the advantages that: the adhesion between the re-transfer film and the soft label base material can not be influenced by adding the pigment into the protective layer, the pattern is printed on the colorful re-transfer film in a thermal transfer printing mode, then the colorful re-transfer film is hot-stamped to the surface of the transparent base material in a hot stamping mode, and the re-transfer film is self-provided with a background color when used for soft label printing on the transparent base material, so that extra background color printing is not needed, the printing process is simplified, the cost is reduced, and the printing quality is improved.

Description

Color re-transfer printing film for transparent soft label base material
Technical Field
The invention belongs to the technical field of soft label printing, and particularly relates to a color re-transfer printing film for a transparent soft label substrate.
Background
At present, the soft label printing modes mainly comprise ink-jet printing, laser printing, thermal transfer printing and the like. Ink jet printing is the process of jetting corresponding colored inks through nozzles onto a substrate to produce a desired image. Laser printing refers to that the surface of a substrate is partially discharged by laser to attract corresponding toner to finish printing. The two printing modes have poor environmental protection performance, and can only complete the printing of the whole image by printing the background color and then printing the pattern, thereby increasing the complexity of the printing process.
When soft label printing is carried out, the types of base materials are various, the colors and the transparencies of the base materials are different, and when image printing is carried out, a background color different from the base material color needs to be filled in a blank area of an image.
Therefore, a color re-transfer film for a transparent soft label substrate is provided to solve the defects in the prior art.
Disclosure of Invention
The present invention provides a color re-transfer film for a transparent soft label substrate, in which the addition of a pigment to a protective layer does not affect the adhesion between the re-transfer film and the soft label substrate.
The technical scheme for solving the technical problems is as follows: the color re-transfer printing film for the transparent soft label base material is sequentially laminated with a substrate, a protective layer and a pattern receiving layer from top to bottom; the protective layer is formed by coating the following raw materials in parts by weight: 50-90 parts of first resin and 10-50 parts of pigment; the pattern receiving layer is formed by coating the following raw materials in parts by weight: 99 parts of second resin and 1 part of matting powder.
Has the advantages that: the pigment is added into the protective layer, so that the adhesiveness between the re-transfer film and the soft label base material is not influenced, the pattern is printed on the color re-transfer film by using a thermal transfer printing mode, then the color re-transfer film is hot-stamped to the surface of the transparent base material by using a hot stamping mode, and the re-transfer film is self-provided with a background color when the soft label is printed on the transparent base material, so that extra background color printing is not required, the printing process is simplified, the cost is reduced, and the stable printing quality is improved.
Further, the first resin comprises one or a mixture of more than two of polyester resin, acrylic resin, aldehyde ketone resin, alkyd resin, polyvinyl alcohol and thermosetting resin.
Has the advantages that: the function of protecting and providing background color is achieved.
Further, the second resin includes one or a mixture of two or more of polyvinyl chloride, polyvinyl acetate, a vinyl chloride-vinyl acetate copolymer, and polyacrylate.
Has the advantages that: receiving the dye transferred from the dye layer of the dye-sublimation ribbon to form a pattern.
Further, the first resin also comprises an auxiliary agent.
Has the advantages that: the first resin and the pigment can be ensured to be fully mixed.
Further, the substrate is one of polypropylene, polyethylene naphthalate, polyethylene terephthalate, polyethylene, polyvinyl alcohol and polymethyl methacrylate.
Has the advantages that: the film is adopted as the substrate, so that the protective layer can be better ensured to be effectively coated on the surface of the substrate.
Further, the thickness of the substrate is 12-125 μm, the thickness of the protective layer is 0.5-5 μm, and the thickness of the pattern receiving layer is 1.5-15 μm.
Has the advantages that: the printing effect is good and the image is clear.
Further, the matting powder is gas-silicon particles with the particle size of 1-10 μm.
Has the advantages that: achieving a good matting effect requires the paint film to be given a matte finish and diffuse reflection.
The invention provides a preparation method of a color re-transfer printing film for a transparent soft label substrate, which comprises the following steps:
s1: providing a substrate, and applying corona on one side of the substrate;
s2: dissolving 50-90 parts of first resin in butanone and toluene solvent, then adding 10-50 parts of pigment and a small amount of auxiliary agent, and grinding to obtain protective layer paint;
s3: coating the protective layer pattern material obtained in the step S2 on the corona-striking surface of the substrate in the step S1, and drying after coating to obtain a protective layer;
s4: and (3) dissolving 99 parts of second resin in a butanone and toluene solvent, then adding 1 part of matting powder, and stirring and mixing to obtain the receiving layer coating.
S5: and (5) coating the receiving layer coating obtained in the step (S4) on one side of the protective layer far away from the substrate, and drying after coating to obtain the color re-transfer film.
Further, in step S3, the drying temperature is 60-120 ℃.
Further, in step S5, the drying temperature is 90-150 ℃.
Has the advantages that: the color re-transfer film can be prepared by the preparation method, the process of printing background color in soft label printing is reduced, the printing process is simplified, the cost is reduced, and the printing quality stability is improved.
Drawings
FIG. 1 is a schematic view of a layer structure of a color re-transfer film according to the present invention;
FIG. 2 is a schematic structural diagram of a carbon ribbon of an adhesion layer;
FIG. 3 is a schematic view of a ribbon;
in the drawings, the components represented by the respective reference numerals are listed below:
1. a substrate; 2. a protective layer; 3. a pattern receiving layer; 4. a PET substrate; 5. a release layer; 6. a bonding layer; 7. a soft label substrate.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1:
the embodiment provides a color re-transfer film for a transparent soft label substrate, which comprises a substrate 1, a protective layer 2 and a pattern receiving layer 3, wherein the substrate, the protective layer 2 and the pattern receiving layer 3 are sequentially attached from top to bottom.
Wherein the substrate 1 is 100 μm polyethylene terephthalate;
the protective layer 2 is formed by coating the following raw materials in parts by weight:
80 parts of polyester resin and 20 parts of white color paste;
the pattern receiving layer 3 is formed by coating the following raw materials in parts by weight:
99 parts by mass of a vinyl chloride-vinyl acetate copolymer and 1 part by mass of a matting powder, and the thickness of the matting powder was 7 μm.
Preparing a color re-transfer printing film:
s1: providing a substrate 1, and applying corona on one side of the substrate 1;
s2: dissolving 80 parts of polyester resin in butanone and toluene solvent, then adding 20 parts of white color paste and a small amount of assistant light stabilizer and mildew-proof fluorine-containing agent,
the light stabilizer comprises one or more of salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitrile and triazine ultraviolet absorbers, and the mass of the light stabilizer accounts for 0.1-2wt% of the mass of the resin of the protective layer 2;
the fluorine-containing auxiliary agent comprises one or more of fluorosilane, a fluorine-containing surfactant and fluorine-containing acrylic resin, and the mass of the fluorine-containing auxiliary agent accounts for 0.1-2wt% of the mass of the resin in the protective layer 2; grinding to obtain a protective layer coating;
s3: coating the protective layer pattern material obtained in the step S2 on the corona-striking surface of the substrate 1 in the step S1, and drying after coating to obtain a protective layer 2;
s4: and (2) dissolving 99 parts by mass of vinyl chloride-vinyl acetate copolymer in a butanone and toluene solvent, adding 1 part of matting powder, and stirring and mixing to obtain the receiving layer coating.
S5: and (5) coating the receiving layer coating obtained in the step (S4) on one side of the protective layer (2) far away from the substrate (1), and drying after coating to obtain the color re-transfer film.
Example 2:
the embodiment provides a color re-transfer film for a transparent soft label substrate, which comprises a substrate 1, a protective layer 2 and a pattern receiving layer 3, wherein the substrate, the protective layer 2 and the pattern receiving layer 3 are sequentially attached from top to bottom.
Wherein the substrate 1 is 100 μm polyethylene terephthalate;
the protective layer 2 is formed by coating the following raw materials in parts by weight:
70 parts of polyester resin and 30 parts of white color paste;
the pattern receiving layer 3 is formed by coating the following raw materials in parts by weight:
99 parts by mass of a vinyl chloride-vinyl acetate copolymer and 1 part by mass of a matting powder, and the thickness of the matting powder was 7 μm.
Preparing a color re-transfer film:
s1: providing a substrate 1, and applying corona on one side of the substrate 1;
s2: 70 portions of polyester resin is dissolved in butanone and toluene solvent, then 30 portions of white color paste and a small amount of assistant light stabilizer and mildew-proof fluorine-containing agent are added,
the light stabilizer comprises one or more of salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitrile and triazine ultraviolet absorbers, and the mass of the light stabilizer accounts for 0.1-2wt% of the mass of the resin of the protective layer 2;
the fluorine-containing auxiliary agent comprises one or more of fluorosilane, a fluorine-containing surfactant and fluorine-containing acrylic resin, and the mass of the fluorine-containing auxiliary agent accounts for 0.1-2wt% of the mass of the resin in the protective layer 2; grinding to obtain a protective layer coating;
s3: coating the protective layer pattern material obtained in the step S2 on the corona-striking surface of the substrate 1 in the step S1, and drying after coating to obtain a protective layer 2;
s4: and (2) dissolving 99 parts by mass of vinyl chloride-vinyl acetate copolymer in a butanone and toluene solvent, adding 1 part of matting powder, and stirring and mixing to obtain the receiving layer coating.
S5: and (5) coating the receiving layer coating obtained in the step (S4) on one side of the protective layer (2) far away from the substrate (1), and drying after coating to obtain the color re-transfer film.
Example 3:
the embodiment provides a color re-transfer printing film for a transparent soft label substrate, which comprises a substrate 1, a protective layer 2 and a pattern receiving layer 3 which are sequentially attached from top to bottom.
Wherein, the substrate 1 is 100 μm polyethylene terephthalate;
the protective layer 2 is formed by coating the following raw materials in parts by weight:
60 parts of polyester resin and 40 parts of white color paste;
the pattern receiving layer 3 is formed by coating the following raw materials in parts by weight:
99 parts by mass of a vinyl chloride-vinyl acetate copolymer and 1 part by mass of a matting powder, and the thickness of the matting powder was 7 μm.
Preparing a color re-transfer film:
s1: providing a substrate 1, and applying corona on one side of the substrate 1;
s2: dissolving 60 parts of polyester resin in butanone and toluene solvent, then adding 40 parts of white color paste and a small amount of assistant light stabilizer and mildew-proof fluorine-containing agent,
the light stabilizer comprises one or more of salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitrile and triazine ultraviolet absorbers, and the mass of the light stabilizer accounts for 0.1-2wt% of the mass of the resin of the protective layer 2;
the fluorine-containing auxiliary agent comprises one or a combination of more of fluorosilane, fluorine-containing surfactant and fluorine-containing acrylic resin, and the mass of the fluorine-containing auxiliary agent accounts for 0.1-2wt% of the mass of the resin in the protective layer 2; grinding to obtain a protective layer coating;
s3: coating the protective layer pattern material obtained in the step S2 on the corona-striking surface of the substrate 1 in the step S1, and drying after coating to obtain a protective layer 2;
s4: and (2) dissolving 99 parts by mass of vinyl chloride-vinyl acetate copolymer in a butanone and toluene solvent, adding 1 part of matting powder, and stirring and mixing to obtain the receiving layer coating.
S5: and (5) coating the receiving layer coating obtained in the step (S4) on one side of the protective layer (2) far away from the substrate (1), and drying after coating to obtain the color re-transfer film.
Example 4:
the embodiment provides a color re-transfer film for a transparent soft label substrate, which comprises a substrate 1, a protective layer 2 and a pattern receiving layer 3, wherein the substrate, the protective layer 2 and the pattern receiving layer 3 are sequentially attached from top to bottom.
Wherein the substrate 1 is 100 μm polyethylene terephthalate;
the protective layer 2 is formed by coating the following raw materials in parts by weight:
50 parts of polyester resin and 50 parts of white color paste;
the pattern receiving layer 3 is formed by coating the following raw materials in parts by weight:
99 parts by mass of a vinyl chloride-vinyl acetate copolymer and 1 part by mass of a matting powder, and the thickness of the matting powder was 7 μm.
Preparing a color re-transfer printing film:
s1: providing a substrate 1, and applying corona on one side of the substrate 1;
s2: dissolving 50 parts of polyester resin in butanone and toluene solvent, then adding 50 parts of white color paste and a small amount of assistant light stabilizer and mildew-proof fluorine-containing agent,
the light stabilizer comprises one or more of salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitrile and triazine ultraviolet absorbers, and the mass of the light stabilizer accounts for 0.1-2wt% of the resin mass of the protective layer 2;
the fluorine-containing auxiliary agent comprises one or more of fluorosilane, a fluorine-containing surfactant and fluorine-containing acrylic resin, and the mass of the fluorine-containing auxiliary agent accounts for 0.1-2wt% of the mass of the resin in the protective layer 2; grinding to obtain a protective layer coating;
s3: coating the protective layer pattern material obtained in the step S2 on the corona-coated surface of the substrate 1 in the step S1, and drying after coating to obtain a protective layer 2;
s4: and (2) dissolving 99 parts by mass of vinyl chloride-vinyl acetate copolymer in a butanone and toluene solvent, adding 1 part of matting powder, and stirring and mixing to obtain the receiving layer coating.
S5: and (5) coating the receiving layer coating obtained in the step (S4) on one side, away from the substrate 1, of the protective layer 2, and drying after coating to obtain the color re-transfer printing film.
The color re-transfer film is transferred on the soft label substrate 7, a bonding carbon ribbon is needed, sometimes in order to further improve the adhesive force between the re-transfer film and the transparent soft label substrate 7, a bonding layer 6 needs to be transferred on the soft label substrate, and the invention also provides a corresponding formula and a preparation process of the bonding carbon ribbon.
The substrate adhered with the carbon tape is polyethylene terephthalate, the surface of the substrate is coated with a release layer 5 and an adhering layer coated on one side of the release layer far away from the substrate, and the thickness of the substrate is 12-125 μm, wherein the preferable thickness is 25-50 μm.
The release layer 5 is composed of vinyl resin and polyethylene glycol, the vinyl resin refers to one or more of polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinylpyrrolidone and the like, and the number average molecular weight (Mn) of the polyethylene glycol is more than 3000 and less than 23000, preferably 10000-13000; the thickness of the release layer 5 is 0.5-1.5 μm.
The preparation method of the release layer 5 comprises the following steps: dissolving the polymer material into water or a corresponding organic solvent to prepare a coating, then coating the coating on the surface of a substrate by a gravure coating or slot coating mode, and drying.
The adhesive layer 6 is made of polyvinyl alcohol and polyester resin; the thickness of the adhesive layer 6 is 1-7 μm;
the preparation method of the adhesive layer 6 comprises the following steps: dissolving the polymer material into water or a corresponding solvent to prepare a coating, coating the coating on the surface of a substrate by a gravure coating or slot coating mode, and drying.
Finally, when the protective layer 2, the pattern receiving layer 1, the release layer 5 and the adhesion layer 6 coating of the present invention are prepared, a small amount of leveling agent, defoaming agent and the like may be added according to the requirements in addition to the above main materials.
Comparative example 1:
the present example uses UV inkjet to print the design and background color directly onto the transparent PET soft label substrate.
Comparative example 2:
this example adds pigment to the adhesion layer 6 and prints and thermally transfers the pattern as described in the previous example, and the specific receiving ribbon and adhesion ribbon formulations are as follows:
protective layer 2: polyester resin with a thickness of 2 μm;
receiving layer 3:99 parts by mass of a vinyl chloride-vinyl acetate copolymer and 1 part by mass of a matting powder, and the thickness of the matting powder was 7 μm.
The protective layer 3 and the receiving layer 3 were coated on a 25 μm PET substrate in the manner as in example 1;
then carbon ribbon formula:
the following formulation was used for release layer 5: 50 parts by mass of binary chlorine vinegar and 50 parts by mass of PEG (Mn: 10000), wherein the thickness of the coating is 1.2 +/-0.2 mu m;
the following formulation was used for the adhesion layer 6: 25 parts of polyester resin, 25 parts of polyvinyl alcohol and 50 parts of white color paste, wherein the particle size of the color paste is 0.5 mu m, and the thickness of the coating is 5 +/-0.2 mu m.
Release layer 5 and adhesive layer 6 were coated on a 25 μm PET substrate in the manner of example 1;
finally, the pattern is printed according to the following method: 1. printing a pattern mirror image on the receiving layer by using a thermal transfer ribbon (a resin ribbon, a wax-based ribbon, a semi-wax semi-resin ribbon or a thermal sublimation ribbon), and 2, transferring the subsequent layer ribbon to the surface of the soft label substrate by using thermal pasting at the temperature of 140 ℃.3. The receiving layer and the protective layer in 1 are transferred to the surface of the soft label substrate in 2 by using a hot mounting technology, and the hot mounting temperature is 140 ℃.
Comparative example 3:
an additional pigment layer is coated between the protective layer 2 and the dye receiving layer 3, and the printing and thermal transfer printing of the pattern are carried out according to the method of the embodiment, and the formulas of the carbon ribbon of the receiving layer and the following carbon ribbon are as follows:
protective layer 2: polyester resin with a thickness of 2 μm;
pigment layer: 50 parts by mass of polyester resin, 50 parts by mass of titanium dioxide (particle size of 0.5 mu m), and the thickness of the coating layer of 2 mu m
Receiving layer 6:99 parts by mass of a vinyl chloride-vinyl acetate copolymer and 1 part by mass of a matting powder, and the thickness of the coating was 7 μm.
The protective layer 2 and the receiving layer 6 were coated on a 25 μm PET substrate in the manner of example;
then, carbon ribbon formula:
the following formulation was used for release layer 5: 50 parts by mass of binary chlorine vinegar, 50 parts by mass of PEG (Mn: 10000), and coating thickness
1.2±0.2μm；
The following formulation was used for the adhesion layer: 50 parts by mass of a polyester resin and 50 parts by mass of polyvinyl alcohol, and the thickness of the coating is 5 +/-0.2 mu m.
Release layer 5 and adhesive layer 6 were coated on a 25 μm PET substrate as in the examples;
finally, the pattern is printed according to the following method: 1. printing a pattern mirror image on the receiving layer by using a thermal transfer ribbon (a resin ribbon, a wax-based ribbon, a semi-wax semi-resin ribbon or a thermal sublimation ribbon), and 2, transferring the subsequent layer ribbon to the surface of the soft label substrate by using thermal pasting at the temperature of 140 ℃.3. The receiving layer and the protective layer in 1 are transferred to the surface of the soft label substrate in 2 by using a hot mounting technology, and the hot mounting temperature is 140 ℃.
Examples 1-4 were compared to comparative examples 1-3 for rub resistance, color layer bond fastness, solvent resistance, and background color hiding as shown in the following table:
Figure BDA0003412093730000101
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Figure BDA0003412093730000111
wherein, the friction resistance test takes the weight loss before and after friction as the judgment standard;
color layer bonding fastness, using a disc peeling chamber test, and taking the residual weight after peeling as a judgment standard;
and (3) solvent resistance test: soaking in 75% ethanol solution for 1 min, wherein the color of the solution is A, the color of a small part of the solution is B, the color of a large part of the solution is C, and the color of the solution is D;
the background color hiding power is detected according to HG/T3851-2006, and the background color hiding power in the experimental example and the comparative example is divided into A, B, C and D from strong to weak.
As can be seen from the table, the color re-transfer film is applied to the thermal transfer technology, and has small friction resistance coefficient and low damage consumption; the color layer has high bonding fastness, no obvious fading and strong background color covering.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The color re-transfer printing film for the transparent soft label base material is characterized by comprising a substrate (1), a protective layer (2) and a pattern receiving layer (3) which are sequentially attached from top to bottom;
the protective layer (2) is formed by coating the following raw materials in parts by weight: 50-90 parts of first resin and 10-50 parts of pigment;
the pattern receiving layer (3) is formed by coating the following raw materials in parts by weight: 99 parts of second resin and 1 part of matting powder;
the first resin comprises one or a mixture of more than two of polyester resin, acrylic resin, aldehyde ketone resin, alkyd resin and polyvinyl alcohol;
the second resin comprises one or a mixture of more than two of polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer and polyacrylate.
2. The color retransfer film for a transparent soft label substrate according to claim 1, wherein the first resin further comprises an auxiliary agent.
3. The color re-transfer film for the transparent soft label substrate according to claim 1, wherein the substrate (1) is one of polypropylene, polyethylene naphthalate, polyethylene terephthalate, polyethylene, polyvinyl alcohol, and polymethyl methacrylate.
4. The color re-transfer film for transparent soft label substrates according to claim 1, characterized in that the thickness of the base (1) is 12-125 μm, the thickness of the protective layer (2) is 0.5-5 μm, and the thickness of the pattern receiving layer (3) is 1.5-15 μm.
5. The color re-transfer film for the transparent soft label substrate according to claim 1, wherein the matting powder is gas-silicon particles with a particle size of 1 to 10 μm.
6. The method for manufacturing a color re-transfer film for a transparent soft label substrate according to any one of claims 1 to 5, comprising the steps of:
s1: providing a substrate (1), and applying corona on one side of the substrate (1);
s2: dissolving 50-90 parts of first resin in a butanone and toluene solvent, then adding 10-50 parts of pigment and a small amount of auxiliary agent, and grinding to obtain a protective layer coating;
s3: coating the protective layer paint obtained in the step S2 on the corona-striking surface of the substrate (1) in the step S1, and drying after coating to obtain a protective layer (2);
s4: dissolving 99 parts of second resin in a butanone and toluene solvent, then adding 1 part of matting powder, and stirring and mixing to obtain a receiving layer coating;
s5: and (5) coating the receiving layer coating obtained in the step (S4) on one side of the protective layer (2) far away from the substrate (1), and drying after coating to obtain the color re-transfer film.
7. The color re-transfer film for transparent soft label substrates according to claim 6, wherein the drying temperature in step S3 is 60-120 ℃.
8. The color re-transfer film for transparent soft label substrates according to claim 6, wherein the drying temperature in step S5 is 90-150 ℃.
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