CN114410247A - Portrait digital pre-coating film, preparation method and film coating process - Google Patents

Portrait digital pre-coating film, preparation method and film coating process Download PDF

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Publication number
CN114410247A
CN114410247A CN202111564839.4A CN202111564839A CN114410247A CN 114410247 A CN114410247 A CN 114410247A CN 202111564839 A CN202111564839 A CN 202111564839A CN 114410247 A CN114410247 A CN 114410247A
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film
eva
portrait
coating
vinyl acetate
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高臣
凌云
武俊
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Zhangjiagang Free Trade Zone Kangde Film Industry Co ltd
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Zhangjiagang Free Trade Zone Kangde Film Industry Co ltd
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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
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/08—Copolymers of ethene
    • C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09J123/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/35—Heat-activated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention provides a portrait digital pre-coating film, a preparation method and a film coating process. This portrait digital precoating film includes gentle sense anti fish tail layer 2, substrate 1 and hot melt adhesive layer 3 in proper order, hot melt adhesive layer includes: 60-85 parts of first EVA (ethylene-vinyl acetate copolymer), 10-35 parts of second EVA and 0-8 parts of wax, wherein the first EVA is an ethylene-vinyl acetate copolymer prepared by adopting an autoclave method, and the second EVA is an ethylene-vinyl acetate copolymer prepared by adopting a high-pressure tubular method. The portrait digital pre-coating film disclosed by the invention realizes the substrate functionalization through one-time coating, endows a portrait digital printing product with more functions, uses the improved hot melt adhesive layer formula, can meet the requirement of extrusion compounding high-speed production, has excellent adhesive force on heavy oil printed sheets in the fields of portrait digital printing and the like, can adapt to an online laminating-embossing process, does not generate the phenomena of air bubbles, film rising and the like, and has higher laminating speed.

Description

Portrait digital pre-coating film, preparation method and film coating process
Technical Field
The invention relates to the field of pre-coating films, in particular to a portrait digital pre-coating film, a preparation method and a film coating process.
Background
The general precoating film on the current market is as follows: BOPP pre-coating films (bright and matte), PET pre-coating films, touch pre-coating films, scratch-resistant pre-coating films, super-adhesive pre-coating films (digital printing coating films), aluminum plating series pre-coating films and the like, and the pre-coating films only having single attribute are more. With the expansion of the application field of the precoating film by customers and the demand of the precoating film, the demand of the precoating film on the versatility of the product is also increased.
The existing pre-coating film needs to be coated twice (an outer scratch-resistant layer and an inner adhesion-promoting layer) in order to increase the functionality and improve the adhesive force, the quality problems of wood grains and wrinkles easily occur due to the relation between a scraper and an oven, the process is relatively complicated, the loss rate is high, the functionality is single, and the efficiency and the cost are influenced. The patent CN105482728A is suitable for manufacturing a scratch-resistant precoating film of a digital printing product, and the method comprises the steps of firstly coating a water-based scratch-resistant coating liquid on the outer side surface of a PET substrate, and drying; then, coating a film on the inner side surface of the base material, and coating hot melt adhesive (EVA); and finally, coating a layer of tackifier on the surface of the hot melt adhesive (EVA), drying, and finishing the preparation, wherein the functionality is single, and the process flow is more.
And when the existing pre-coating film is applied to the portrait digital field, the film can not adapt to the online film coating-embossing process, the phenomena of air bubbles, film rising and the like are easy to occur, and the film coating speed is low.
In order to solve the above problems, it is necessary to provide a portrait digital pre-coating film, a preparation method and a film coating process.
Disclosure of Invention
The invention aims to provide a portrait digital pre-coating film, a preparation method and a film coating process, and aims to solve the problems that the existing pre-coating film is single in function, complicated in process, high in cost, incapable of being adapted to an online film coating-embossing process, easy to generate bubbles, film lifting and the like, and low in film coating speed.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a digital membrane of precoating of portrait includes gentle sense anti fish tail layer, substrate and hot melt adhesive layer in proper order, hot melt adhesive layer includes:
60 to 85 parts of first EVA (ethylene-vinyl acetate copolymer),
10-35 parts of a second EVA (ethylene-vinyl acetate copolymer),
0 to 8 parts of wax,
the first EVA is an ethylene-vinyl acetate copolymer prepared by adopting an autoclave method, and the second EVA is an ethylene-vinyl acetate copolymer prepared by adopting a high-pressure tubular method.
Further, the content of the vinyl acetate in the first EVA is 15-20%, and the content of the vinyl acetate in the second EVA is 22-28%.
Further, the first EVA has a melt index of 19-23g/10min and a melting point of more than or equal to 80 ℃; the second EVA has a melt index of 20-25 g/10min and a melting point of 70-75 ℃.
Further, the wax is one or more of microcrystalline wax, paraffin wax and polyethylene wax.
Further, the material of the soft-feel scratch-resistant layer is solvent-free UV gloss oil.
Further, the solvent-free UV gloss oil is one or more of polyurethane elastic microspheres, acrylate coating and vinyl compound coating.
Furthermore, the thickness of the base material is 50-100 microns, the thickness of the soft-sensing scratch-resistant layer is 3-5 microns, and the thickness of the hot melt adhesive layer is 100-200 microns.
The invention also provides a preparation method of the portrait digital pre-coated film, which comprises the following steps:
s1, coating the solvent-free UV gloss oil on one side of the substrate, and carrying out UV irradiation curing to prepare a soft scratch-resistant layer;
and S2, extruding and casting the hot melt adhesive layer material on the other side of the base material by using a single-screw extruder to prepare the hot melt adhesive layer.
The invention also provides a film laminating process, wherein the pre-laminating film is compounded on the surface of the portrait digital presswork by adopting an on-line film laminating-embossing process, and the pre-laminating film is the portrait digital pre-laminating film.
Further, the pre-coated film online laminating-embossing laminating speed is 10-20 mpm.
The portrait digital pre-coating film realizes the functionalization of the base material through one-time coating, has excellent velvet touch and scratch resistance, realizes the customization of the appearances of bright light, matte light, touch and the like through the formula and the process adjustment of the solvent-free UV gloss oil, provides a personalized product, endows a portrait digital printing product with more functions, saves energy, improves the efficiency and reduces the cost.
The improved hot melt adhesive layer formula is used, extrusion compounding high-speed production can be met, excellent adhesive force is provided for heavy oil printed sheets in the fields of portrait numbers and the like, the method can adapt to an online film laminating-embossing process, the phenomena of bubbles, film rising and the like cannot occur, and the film laminating speed is high.
Drawings
FIG. 1 is a schematic structural view of a portrait digital pre-coating film of the present invention;
wherein, 1 is a base material, 2 is a soft scratch-resistant layer, and 3 is a thermosol layer.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
As shown in fig. 1, the invention discloses a portrait digital pre-coated film, which sequentially comprises a soft-sensing scratch-resistant layer 2, a base material 1 and a hot-melt adhesive layer 3, wherein the hot-melt adhesive layer comprises:
60 to 85 parts of first EVA (ethylene-vinyl acetate copolymer),
10-35 parts of a second EVA (ethylene-vinyl acetate copolymer),
0 to 8 parts of wax,
the first EVA is an ethylene-vinyl acetate copolymer prepared by adopting an autoclave method, and the second EVA is an ethylene-vinyl acetate copolymer prepared by adopting a high-pressure tubular method.
The portrait digital pre-coating film realizes the functionalization of the base material through one-time coating, the soft scratch-resistant layer 2 has excellent velvet touch and scratch resistance, more functions are given to portrait digital printing products, the energy is saved, the efficiency is improved, and the cost is reduced. The improved hot melt adhesive layer formula is used, extrusion compounding high-speed production can be met, excellent adhesive force is provided for heavy oil printed sheets in the fields of portrait numbers and the like, the method can adapt to an online film laminating-embossing process, the phenomena of bubbles, film rising and the like cannot occur, and the film laminating speed is high.
In the invention, the substrate 1 is one of a biaxially oriented polyester film (PET), a biaxially oriented nylon film (NY) or a biaxially oriented polypropylene film (BOPP), preferably, the substrate is a biaxially oriented polyester film (PET), double-sided corona is generated, and the transmittance is more than or equal to 95%. The thickness of the substrate 1 is 50 to 100 μm.
In the invention, the soft-feel scratch-resistant layer 2 is prepared by using solvent-free UV gloss oil, and the thickness of the layer is 3-5 μm, preferably 2-2.5 μm. The solvent-free UV gloss oil can be determined according to actual requirements, can be a touch and scratch resistant combined gloss oil, and has wear resistance and velvet touch; and UV gloss oil with different gloss degrees can be selected to endow functions of gloss, matte and the like, so that personalized products are provided. The solvent-free UV gloss oil can be one or more of polyurethane elastic microspheres, acrylate coatings and vinyl compound coatings (such as KDNM-7207, KDNM-7217, KDNM-7218 and the like). The solvent-free UV gloss oil does not contain a solvent, is high in curing speed, and has the advantages of safety, environmental friendliness and high production efficiency.
In the invention, the hot melt adhesive layer 3 can meet the requirement of extrusion compounding high-speed production, has excellent adhesive force to heavy oil printed sheets in the fields of portrait digital codes and the like, and can adapt to an online laminating-embossing process. The hot melt adhesive layer comprises 60-85 parts of first EVA (ethylene vinyl acetate), 10-35 parts of second EVA and 0-8 parts of wax. The first EVA is an ethylene-vinyl acetate copolymer prepared by an autoclave method, and the product produced by the autoclave method has small necking, a multi-branched structure and is not easy to rebound after embossing; the second EVA is ethylene-vinyl acetate copolymer prepared by adopting a high-pressure tubular method, the cohesion of the tubular product is higher, and the higher cohesion can make the adhesive layer adapt to a high-speed extrusion compounding process. The first EVA and the second EVA are mixed and used according to the proportion, so that a finished product has the advantages of two materials and is suitable for processing and using requirements.
In a preferred embodiment, the content of Vinyl Acetate (VA) in the first EVA is 15 to 20 wt%; the content of Vinyl Acetate (VA) in the second EVA is 22-28 wt%. The first EVA has low VA content and high hardness, and can ensure that a finished product is not easy to rebound; the second EVA has higher VA content, can improve the wettability of the hot melt adhesive layer to the printed sheet, and enables the product to have very high adhesive force.
In a preferred embodiment, the first EVA has a Melt Index (MI) of 19-23g/10min, a melting point of 80 ℃ or higher, and the second EVA has a melt index of 20-25 g/10min, a melting point of 70-75 ℃. The first EVA and the second EVA have similar melt indexes, and the melt can be well fused, so that the finished product has the advantages of two materials and is suitable for processing and using requirements.
In the present invention, wax may optionally be used to improve the performance of the hot melt adhesive layer. The wax reduces the overall viscosity of the adhesive layer, thereby making it easily liquefiable. Waxes can also be used to control the set time, cure speed and thermal stability of the film after application of the system. When wax is present, it is preferably present in an amount of 8 parts or less. The wax is one or more of microcrystalline wax, paraffin wax and polyethylene wax, preferably the microcrystalline wax has a small molecular weight, the addition of a small amount of microcrystalline wax can reduce the hot melt adhesive viscosity, so that the adhesive layer can more easily permeate into printed sheets in the film laminating process, and the adhesive layer can form eutectic with EVA during cooling, thereby improving the adhesive force and preventing the embossed part from rebounding and foaming.
The thickness of the hot melt adhesive layer is 100-200 mu m, the hot melt adhesive layer material can meet the extrusion and casting compounding speed of 300mpm, the casting is stable, the film is not broken, and the hot melt adhesive layer has no missing coating and no crystal point. The adhesive has excellent adhesion to portrait digital printed sheets, can adapt to the specific online film covering-embossing process in the portrait digital field, has the film covering speed of 10-20 mpm, does not generate films or bubbles, and has high color reduction degree.
The invention also provides a preparation method of the portrait digital pre-coated film, which comprises the following steps:
s1, coating the solvent-free UV gloss oil on one side of a substrate, and curing by UV irradiation under the protection of inert gas to prepare a special soft scratch-resistant layer;
and S2, extruding and casting the hot melt adhesive layer material on the other side of the base material by using a single-screw extruder to prepare the hot melt adhesive layer.
In the embodiment of the invention, the extrusion temperature of the extrusion casting process is 200-250 ℃. The extruder of the present invention is not particularly limited, and any extruder known to those skilled in the art may be used.
In addition, the invention also provides a film laminating process, wherein the pre-laminating film is compounded on the surface of the portrait digital presswork by adopting an on-line film laminating-embossing process, and the pre-laminating film is the portrait digital pre-laminating film.
The pre-coating film can adapt to the specific online film coating-embossing process in the portrait digital field, the film coating speed reaches 10-20 mpm, no film is formed, no air bubbles exist, and the color reduction degree is high.
Example 1
The embodiment provides a portrait digital pre-coating film, which comprises a substrate 1, wherein the substrate is PET, double-sided corona is adopted, and the transmittance is more than or equal to 95%. One side of the PET is coated with solvent-free UV gloss oil and is cured to form a soft scratch resistant layer 2, and the soft scratch resistant layer 2 has velvet touch and scratch resistance. The solvent-free UV varnish may be a low gloss or high gloss UV varnish. And extruding and casting the hot melt adhesive layer material on the other side of the PET by using a single screw extruder to prepare the hot melt adhesive layer 3.
The hot-melt adhesive layer 3 contained 60 parts of a first EVA (ethylene-vinyl acetate copolymer produced by autoclave process, model I-2, VA content 18% made by KDX), 35 parts of a second EVA (ethylene-vinyl acetate copolymer produced by autoclave process, model I-29, VA content 28% made by KDX).
The portrait digital pre-coating film is compounded on the surface of the portrait digital printed matter by adopting an online film coating-embossing process, the film coating speed reaches 10-20 mpm, no film is formed, no air bubbles exist, and the color reduction degree is high.
Example 2
In contrast to example 1: the hot melt adhesive layer comprises 85 parts of first EVA (ethylene-vinyl acetate copolymer prepared by autoclave process, manufactured by KDX, type I-6, with 18% of VA), 10 parts of second EVA (ethylene-vinyl acetate copolymer prepared by autoclave process, manufactured by KDX, type I-1, with 22% of VA), and 5 parts of microcrystalline wax.
Example 3
In contrast to example 1: the hot melt adhesive layer comprises 72 parts of first EVA (ethylene-vinyl acetate copolymer prepared by autoclave process, manufactured by KDX, type I-32, with a VA content of 20%), 15 parts of second EVA (ethylene-vinyl acetate copolymer prepared by autoclave process, manufactured by KDX, type I-1, with a VA content of 22%) and 8 parts of wax.
Comparative example
Coating an aqueous scratch-resistant coating liquid on one side of a PET (polyethylene terephthalate) substrate, and drying; extruding low-density polyethylene (LDPE) from the other side of the PET substrate by using an extruder to form a hot melt adhesive layer; and finally, coating a layer of tackifier on the surface of the hot melt adhesive, and drying to prepare a precoating film.
The precoat films of examples 1 to 3 and comparative example were subjected to property measurement, and the results are shown in the following table:
Figure BDA0003421754000000081
from the results of the above examples and comparative examples, it can be seen that the portrait digital pre-coating film of the present invention realizes the substrate functionalization through one-time coating, has excellent velvet touch and scratch resistance, realizes the appearance customization of brightness, matte, touch and the like through the solvent-free UV varnish formula and process adjustment, provides personalized products, gives more functions to portrait digital printing products, saves energy, improves efficiency, and reduces cost.
The improved hot melt adhesive layer formula is used, extrusion compounding high-speed production can be met, excellent adhesive force is provided for heavy oil printed sheets in the fields of portrait numbers and the like, the method can adapt to an online film laminating-embossing process, the phenomena of bubbles, film rising and the like cannot occur, and the film laminating speed is high.
It should be noted that the above-mentioned embodiments illustrate only preferred embodiments of the invention, and are not intended to limit the invention in any way, so that any modification or variation of the invention, which is within the spirit of the invention, is covered by the protection scope of the invention.

Claims (10)

1. The utility model provides a digital membrane of precoating of portrait, its characterized in that includes soft anti fish tail layer, substrate and hot melt adhesive layer of sense in proper order, hot melt adhesive layer includes:
60 to 85 parts of first EVA (ethylene-vinyl acetate copolymer),
10-35 parts of a second EVA (ethylene-vinyl acetate copolymer),
0 to 8 parts of wax,
the first EVA is an ethylene-vinyl acetate copolymer prepared by adopting an autoclave method, and the second EVA is an ethylene-vinyl acetate copolymer prepared by adopting a high-pressure tubular method.
2. The portrait digital pre-coated film according to claim 1, wherein the content of vinyl acetate in the first EVA is 15-20%, and the content of vinyl acetate in the second EVA is 22-28%.
3. The portrait digital pre-coating film according to claim 1, wherein the first EVA has a melt index of 19-23g/10min and a melting point of 80 ℃ or more; the second EVA has a melt index of 20-25 g/10min and a melting point of 70-75 ℃.
4. The portrait digital pre-coat film of claim 1, wherein the wax is one or more of microcrystalline wax, paraffin wax, polyethylene wax.
5. The portrait digital pre-coat film of claim 1, wherein the material of the soft-feel scratch-resistant layer is a solvent-free UV varnish.
6. The portrait digital pre-coated film of claim 5, wherein the solvent-free UV gloss oil is one or more of polyurethane elastic microspheres, acrylate paint, vinyl compound paint.
7. The portrait digital pre-coated film according to claim 1, wherein the thickness of the substrate is 50 to 100 μm, the thickness of the soft scratch resistant layer is 3 to 5 μm, and the thickness of the hot melt adhesive layer is 100 to 200 μm.
8. A preparation method of a portrait digital pre-coated film is characterized by comprising the following steps:
s1, coating the solvent-free UV gloss oil on one side of the substrate, and carrying out UV irradiation curing to prepare a soft scratch-resistant layer;
and S2, extruding and casting the hot melt adhesive layer material on the other side of the base material by using a single-screw extruder to prepare the hot melt adhesive layer.
9. A film laminating process is characterized in that a pre-coating film is compounded on the surface of a portrait digital printed matter by adopting an online film laminating-embossing process, wherein the pre-coating film is the portrait digital pre-coating film according to any one of claims 1 to 7.
10. The film laminating process of claim 9, wherein the laminating speed of the pre-coating film online laminating-embossing is 10-20 mpm.
CN202111564839.4A 2021-12-20 2021-12-20 Portrait digital pre-coating film, preparation method and film coating process Pending CN114410247A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203680946U (en) * 2013-12-02 2014-07-02 北京康得新复合材料股份有限公司 Digital film for low-temperature high-speed laminating
US20160229156A1 (en) * 2013-04-09 2016-08-11 Jiangsu Kangdexin Composite Material Co., Ltd. Matte thermal laminating film and preparing method thereof
CN106833424A (en) * 2017-03-22 2017-06-13 北京康得新功能材料有限公司 Outer spreading type Antistatic type pre-coating film and its production method
CN112830988A (en) * 2019-11-22 2021-05-25 乐天化学株式会社 Ethylene-vinyl acetate copolymer and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160229156A1 (en) * 2013-04-09 2016-08-11 Jiangsu Kangdexin Composite Material Co., Ltd. Matte thermal laminating film and preparing method thereof
CN203680946U (en) * 2013-12-02 2014-07-02 北京康得新复合材料股份有限公司 Digital film for low-temperature high-speed laminating
CN106833424A (en) * 2017-03-22 2017-06-13 北京康得新功能材料有限公司 Outer spreading type Antistatic type pre-coating film and its production method
CN112830988A (en) * 2019-11-22 2021-05-25 乐天化学株式会社 Ethylene-vinyl acetate copolymer and preparation method thereof

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