CN110577806A - Super-adhesive pre-coating film and preparation method thereof - Google Patents
Super-adhesive pre-coating film and preparation method thereof Download PDFInfo
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- 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
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
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- 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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/06—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
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- 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
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- 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
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- 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
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/02—Polyamines
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- 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
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- 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
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- C09J2423/00—Presence of polyolefin
- C09J2423/10—Presence of homo or copolymers of propene
- C09J2423/106—Presence of homo or copolymers of propene in the substrate
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- C09J2451/00—Presence of graft polymer
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- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
Abstract
The invention discloses a super-adhesive pre-coating film and a preparation method thereof. The precoating film solves the technical problems of insufficient binding power and insufficient compounding fastness of a common covering film in the prior art, the peel strength between the prepared super-sticky precoating film and super-sticky paper is obviously improved, and the compounding fastness of the precoating film and a printed matter in the using process is improved.
Description
Technical Field
the invention belongs to the field of super-adhesion, and particularly relates to a super-adhesion pre-coating film and a preparation method thereof.
Background
The pre-coating is a process of pre-gluing and rewinding a plastic film and then compounding the plastic film with a paper print. The pre-coating film processing plant is used to coat glue solution on film according to the use specification and breadth, then the film is rewound for the manufacturer to select, and then the film is compounded with printed matter.
The film-covered, i.e. film-sticking, is a processing technique for coating adhesive on the plastic film, and then the plastic film and the paper printed matter are heated and pressurized to be adhered together to form a paper-plastic integrated product.
in the super-sticky application field, high-requirement patterns are generally coated with films to improve the surface gloss and fastness of products, prolong the service life of the products and play the protection roles of water resistance, pollution prevention, wear resistance, folding resistance and the like, but the super-sticky printing paper-based silicone oil and wax have more content, and the phenomenon of insufficient compound fastness is easy to occur in common coating films, so that the compound effect is influenced.
Disclosure of Invention
In view of the above, the present invention provides a super-adhesive pre-coating film and a preparation method thereof, in which an MAH monomer is used to graft-modify an ethylene-vinyl acetate polymer on a hot melt adhesive layer to change the viscosity of the ethylene-vinyl acetate polymer, a certain amount of paraffin wax is added to the ethylene-vinyl acetate polymer to improve the fluidity of the hot melt adhesive, and a certain amount of tackifier is added to improve the wettability and the adhesive strength of the hot melt adhesive to a substrate, thereby solving the technical problems of insufficient adhesive strength and insufficient compound fastness of a common coating film in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
The super-adhesive pre-coating film comprises a hot-melt adhesive layer, a primer layer and a substrate film layer which are sequentially arranged, wherein the hot-melt adhesive layer is prepared by mixing an ethylene-vinyl acetate polymer, an antioxidant, a plasticizer, an MAH monomer, an initiator, paraffin and a tackifier.
further, the thickness of the primer layer is 0.7g/m2And the primer layer is polyethyleneimine.
Further, the base material film layer is a biaxially oriented polypropylene film or a biaxially oriented polyester film, and the thickness of the base material film layer is 12-25 μm.
further, the thickness of the hot melt adhesive layer is 15-40 μm, wherein the mass content of each component is as follows: 878-92% of ethylene-vinyl acetate polymer, 3% of MAH monomer and the balance of antioxidant, plasticizer, initiator, paraffin and tackifier.
Furthermore, the ethylene-vinyl acetate polymer has a melt index of 16-18g/10min at 190 ℃ and under the condition of 2.16kg, wherein the content of vinyl acetate is 22wt%, and the ethylene-vinyl acetate polymer is high-viscosity EVA commonly used in the market.
Further, the MAH monomer is maleic anhydride monomer, and the initiator is dicumyl peroxide. In the process of blending, melting and extruding all components of the hot melt adhesive layer, the initiator is heated and decomposed to generate radicals which can abstract main chain hydrogen atoms to form radical active points, and the radical active points are grafted with MAH monomers so as to realize the graft modification of the ethylene-vinyl acetate polymer, thereby improving the adhesive property of the hot melt adhesive layer in the processing process.
Further, the antioxidant is 2, 6-di-tert-butyl-p-cresol, the plasticizer is dibutyl phthalate, the tackifier is one of glycerin rosin ester, petroleum resin and cumarone indene resin, the antioxidant is added mainly to reduce EVA oxidative degradation reaction, and when the 2, 6-di-tert-butyl-p-cresol is preferably selected as the antioxidant, the performance of the precoating film is optimal; the plasticizer is added mainly for improving the flexibility and the fluidity of the precoating film, and dibutyl phthalate is preferably selected as the best performance; the tackifier is mainly used for increasing the wetting property of the base material in the hot melt adhesive layer, so that the adhesive force property of the hot melt adhesive layer can be further increased.
the invention also provides a preparation method of the super-adhesive pre-coating film, which comprises the following steps:
S1, after the substrate film layer is unreeled, performing corona treatment on the inner surface of the substrate film layer, wherein the corona treatment aims to improve the surface molecular energy of the inner surface of the substrate through high pressure so as to well adhere to a primer in the next process;
s2, coating a polyethyleneimine solution on the inner surface of the base material film layer, and drying to obtain a primer layer, wherein the mass concentration of the polyethyleneimine solution is 1.5-2.3%, and the drying of the polyethyleneimine solution belongs to conventional operation options possessed by technicians in the field, so that the drying temperature is 60-80 ℃ and the drying time is 4S;
S3, under the action of a gas oxidant, blending, melting and extruding an ethylene-vinyl acetate polymer, an antioxidant, a plasticizer, an MAH monomer, an initiator, paraffin and a tackifier, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer; melt extrusion is a conventional practice in the art and, therefore, is not specifically limited, and in some embodiments of the invention, the melt extrusion temperature is 215-225 ℃.
S4, after trimming and thickness measurement, performing high-frequency high-voltage corona treatment on the hot-melt adhesive layer, wherein the high-frequency high-voltage corona treatment is performed on the surface of the precoated film product so that the surface of the precoated film has large surface molecular energy, particularly the EVA surface must have surface molecular energy, otherwise, the hot-melt adhesive layer can be subjected to film forming when being applied to paper covering and the like of a client; and finally, rolling and cutting.
Further, in step S1, the parameter of the corona treatment is 15-20W/m 2; in step S4, the parameters of the high-frequency high-voltage corona treatment are 20-30W/m 2. Within the range of corona treatment defined above, the final performance is not greatly affected, therefore, in some embodiments of the invention, it is preferred that the corona power is 15W/m2, and the work of high frequency high voltage corona treatment is 15W/m2The ratio is 25W/m2。
Preferably, in step S3, the gaseous oxidant is ozone.
Compared with the prior art, the invention has the following beneficial effects:
1. The invention adopts ethylene-vinyl acetate polymer as a reference substance of the hot melt adhesive layer, and then the reference substance is mixed with the initiator and the MAH monomer, wherein, the radical generated by the heating decomposition of the initiator abstracts the hydrogen atoms of the main chain to form radical active points, and the radical active points are grafted with the MAH monomer to realize the graft modification of the ethylene-vinyl acetate polymer, thereby greatly improving the adhesive property of the hot melt adhesive layer in the processing process, improving the peeling strength between the hot melt adhesive layer and super-sticky paper, increasing the composite fastness of the precoating film and printed matters in the using process, and reducing the cracking and even separation of the precoating film caused by residual silicone oil or wax on the surface of the printed matters in the using process.
2. According to the invention, the tackifier is added into the hot melt adhesive layer to increase the wetting property of the base material in the hot melt adhesive layer, so that the adhesive force property of the hot melt adhesive layer can be further increased, and the adhesive strength of the precoating film can be improved.
3. According to the invention, the paraffin is added into the hot-melt adhesive layer in a certain proportion, so that the fluidity of the hot-melt adhesive layer in the processing process is improved, the adhesion between the wound adhesive layer and another substrate layer is reduced, the static electricity in the winding process is reduced, and the phenomenon that the adhesive layer is adhered to a roller in the using process can be obviously improved.
4. in the preparation process, the high-frequency corona treatment is carried out on the base material and the hot melt adhesive layer, so that the adsorption capacity of the surface of the base material and the surface of the hot melt machine layer is increased, and further, the bonding strength in the precoating film and the compounding fastness of the precoating film to a printed product are increased.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the specific embodiments illustrated. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
the biaxially oriented polypropylene film used in the following examples and comparative examples was given the designation BOPP15, available from Aihui Fangtai industries, Ltd;
the biaxially oriented polyester film is BOPET15, and is purchased from Aihui national air-plastic industry, Inc.;
the ethylene-vinyl acetate polymer adopted contains 22wt% of vinyl acetate, and has a melt index of 16-18g/10min at 190 ℃ and under the condition of 2.16 kg.
The power of corona treatment on the inner surface of the base material is 15W/m2, and the power of double-sided high-frequency high-voltage corona treatment on the precoat film is 25W/m2。
example 1
S1, unwinding a 15-micron biaxially oriented polypropylene film base material and carrying out corona treatment on the inner surface of the base material;
s2, coating a polyethyleneimine solution with the mass concentration of 2.0% on the inner surface of the biaxially oriented polypropylene film substrate, and drying the biaxially oriented polypropylene film substrate in an oven at 70 ℃ to obtain a primer layer;
s3, melting and extruding 87% of hot melt adhesive ethylene-vinyl acetate polymer, 8% of MAH monomer, 1% of dibutyl phthalate, 2-6-di-tert-butyl-p-cresol, dicumyl peroxide, 2.5% of glycerin rosin ester and 1.5% of paraffin at 220 ℃ while performing ozone oxidation at the concentration of 145g/h, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
s4, cooling on a cooling roller at 22 ℃, trimming, measuring thickness to prepare a precoating film with the total thickness of about 40 μm, wherein the thickness of the primer layer is basically negligible, and the thickness of the hot melt adhesive layer is about 25 μm, then carrying out high-frequency high-voltage corona treatment on two surfaces of the precoating film, and finally winding and slitting.
Example 2
S1, unwinding a 15-micron biaxially oriented polypropylene film base material and carrying out corona treatment on the inner surface of the base material;
S2, coating a polyethyleneimine solution with the mass concentration of 2.0% on the inner surface of the biaxially oriented polypropylene film substrate, and drying the biaxially oriented polypropylene film substrate in an oven at 70 ℃ to obtain a primer layer;
S3, melting and extruding 90% of hot melt adhesive ethylene-vinyl acetate polymer, 5% of MAH monomer, 1% of dibutyl phthalate, 2-6-di-tert-butyl-p-cresol, dicumyl peroxide, 2.5% of glycerin rosin ester and 1.5% of paraffin at 220 ℃ while performing ozone oxidation at the concentration of 145g/h, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
S4, cooling on a cooling roller at 22 ℃, trimming, measuring thickness to prepare a precoating film with the total thickness of about 40 μm, wherein the thickness of the primer layer is basically negligible, and the thickness of the hot melt adhesive layer is about 25 μm, then carrying out high-frequency high-voltage corona treatment on two surfaces of the precoating film, and finally winding and slitting.
Example 3
S1, unwinding a 15-micron biaxially oriented polypropylene film base material and carrying out corona treatment on the inner surface of the base material;
S2, coating a polyethyleneimine solution with the mass concentration of 2.0% on the inner surface of the biaxially oriented polypropylene film substrate, and drying the biaxially oriented polypropylene film substrate in an oven at 70 ℃ to obtain a primer layer;
S3, melting and extruding 90% of hot melt adhesive ethylene-vinyl acetate polymer, 5% of MAH monomer, 1% of dibutyl phthalate, 2-6-di-tert-butyl-p-cresol, dicumyl peroxide, 1.5% of glycerin rosin ester and 2.5% of paraffin at 220 ℃ while performing ozone oxidation at the concentration of 145g/h, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
S4, cooling on a cooling roller at 22 ℃, trimming, measuring thickness to prepare a precoating film with the total thickness of about 40 μm, wherein the thickness of the primer layer is basically negligible, and the thickness of the hot melt adhesive layer is about 25 μm, then carrying out high-frequency high-voltage corona treatment on two surfaces of the precoating film, and finally winding and slitting.
Example 4
S1, unwinding a 15-micron biaxially oriented polypropylene film base material and carrying out corona treatment on the inner surface of the base material;
S2, coating a polyethyleneimine solution with the mass concentration of 2.0% on the inner surface of the biaxially oriented polypropylene film substrate, and drying the biaxially oriented polypropylene film substrate in an oven at 70 ℃ to obtain a primer layer;
S3, melting and extruding 92% of hot melt adhesive ethylene-vinyl acetate polymer, 3% of MAH monomer, 1% of dibutyl phthalate, 2-6-di-tert-butyl-p-cresol, dicumyl peroxide, 2.5% of glycerin rosin ester and 1.5% of paraffin at 220 ℃ while performing ozone oxidation at the concentration of 145g/h, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
s4, cooling on a cooling roller at 22 ℃, trimming, measuring thickness to prepare a precoating film with the total thickness of about 40 μm, wherein the thickness of the primer layer is basically negligible, and the thickness of the hot melt adhesive layer is about 25 μm, then carrying out high-frequency high-voltage corona treatment on two surfaces of the precoating film, and finally winding and slitting.
comparative example 1
s1, unwinding a 15-micron biaxially oriented polypropylene film base material and carrying out corona treatment on the inner surface of the base material;
S2, coating a polyethyleneimine solution with the mass concentration of 2.0% on the inner surface of the biaxially oriented polypropylene film substrate, and drying the biaxially oriented polypropylene film substrate in an oven at 70 ℃ to obtain a primer layer;
s3, melting and extruding 95% of hot melt adhesive ethylene-vinyl acetate polymer, 1% of dibutyl phthalate, 2-6-di-tert-butyl-p-cresol, 2.5% of glycerin rosin ester and 1.5% of paraffin by mass fraction at 220 ℃ while performing ozone oxidation at the concentration of 145g/h, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
S4, cooling on a cooling roller at 22 ℃, trimming, measuring thickness to prepare a precoating film with the total thickness of about 40 μm, wherein the thickness of the primer layer is basically negligible, and the thickness of the hot melt adhesive layer is about 25 μm, then carrying out high-frequency high-voltage corona treatment on two surfaces of the precoating film, and finally winding and slitting.
Comparative example 2
S1, unwinding a 15-micron biaxially oriented polypropylene film base material and carrying out corona treatment on the inner surface of the base material;
S2, coating a polyethyleneimine solution with the mass concentration of 2.0% on the inner surface of the biaxially oriented polypropylene film substrate, and drying the biaxially oriented polypropylene film substrate in an oven at 70 ℃ to obtain a primer layer;
s3, melting and extruding a hot melt adhesive ethylene-vinyl acetate polymer with the mass fraction of 92.5%, a MAH monomer with the mass fraction of 5%, dibutyl phthalate with the mass fraction of 1%, 2-6-di-tert-butyl-p-cresol, dicumyl peroxide and paraffin with the mass fraction of 1.5% at 220 ℃ while performing ozone oxidation with the concentration of 145g/h, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
S4, cooling on a cooling roller at 22 ℃, trimming, measuring thickness to prepare a precoating film with the total thickness of about 40 μm, wherein the thickness of the primer layer is basically negligible, and the thickness of the hot melt adhesive layer is about 25 μm, then carrying out high-frequency high-voltage corona treatment on two surfaces of the precoating film, and finally winding and slitting.
Comparative example 3
S1, unwinding a 15-micron biaxially oriented polypropylene film base material and carrying out corona treatment on the inner surface of the base material;
s2, coating a polyethyleneimine solution with the mass concentration of 2.0% on the inner surface of the biaxially oriented polypropylene film substrate, and drying the biaxially oriented polypropylene film substrate in an oven at 70 ℃ to obtain a primer layer;
s3, melting and extruding 91.5% of hot melt adhesive ethylene-vinyl acetate polymer, 5% of MAH monomer, 1% of dibutyl phthalate, 2-6-di-tert-butyl-p-cresol, dicumyl peroxide and 2.5% of glycerin rosin ester at 220 ℃ under the action of ozone oxidation with the concentration of 145g/h, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
s4, cooling on a cooling roller at 22 ℃, trimming, measuring thickness to prepare a precoating film with the total thickness of about 40 μm, wherein the thickness of the primer layer is basically negligible, and the thickness of the hot melt adhesive layer is about 25 μm, then carrying out high-frequency high-voltage corona treatment on two surfaces of the precoating film, and finally rolling and slitting.
comparative example 4
s1, unwinding a 15-micron biaxially oriented polypropylene film base material and carrying out corona treatment on the inner surface of the base material;
s2, coating a polyethyleneimine solution with the mass concentration of 2.0% on the inner surface of the biaxially oriented polypropylene film substrate, and drying the biaxially oriented polypropylene film substrate in an oven at 70 ℃ to obtain a primer layer;
S3, performing ozone oxidation with the concentration of 145g/h, and simultaneously performing melt extrusion on 90% by mass of hot melt adhesive ethylene-vinyl acetate polymer (the content of vinyl acetate is 18 wt%, the melt index of the ethylene-vinyl acetate polymer under the conditions of 190 ℃ and 2.16kg is 14-16g/10min), 5% of MAH monomer, 1% of dibutyl phthalate, 2-6-di-tert-butyl-p-cresol and dicumyl peroxide, 2.5% of glycerin rosin ester and 1.5% of paraffin at 220 ℃, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
S4, cooling on a cooling roller at 22 ℃, trimming, measuring thickness to prepare a precoating film with the total thickness of about 40 μm, wherein the thickness of the primer layer is basically negligible, and the thickness of the hot melt adhesive layer is about 25 μm, then carrying out high-frequency high-voltage corona treatment on two surfaces of the precoating film, and finally rolling and slitting.
The peel strengths of the precoat films prepared in the above examples and comparative examples are shown in the following table:
note: in the table, the peel strength 1 refers to the peel strength between the hot melt adhesive layer and a biaxially oriented polypropylene film (BOPP) or a biaxially oriented polyester film (BOPET) in the pre-coated film; the peel strength 2 refers to the peel strength between the hot melt adhesive layer and the common paper in the pre-coated film; the peel strength 3 refers to the peel strength between the hot melt adhesive layer and the high-ink paper in the pre-coating film; the static electricity is the rolling static electricity of the film roll in the slitting process.
By comparing the examples 1, 2, 3 and 4 with the comparative examples 1, 2, 3 and 4 in the table, the peel strength of the pre-coating film prepared by the invention is obviously stronger than that of the comparative example, and the static electricity is also obviously reduced, so that the pre-coating film prepared by the invention can obviously improve the compounding fastness with the super-sticky paper.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
the above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The super-adhesive pre-coating film comprises a hot-melt adhesive layer, a primer layer and a substrate film layer which are sequentially arranged, and is characterized in that the hot-melt adhesive layer is prepared by mixing an ethylene-vinyl acetate polymer, an antioxidant, a plasticizer, an MAH monomer, an initiator, paraffin and a tackifier.
2. the super bond pre-coat film of claim 1, wherein the primer layer is present in an amount of 0.7g/m2And the primer layer is polyethyleneimine.
3. The precoat film according to claim 1, wherein the base film layer is a biaxially oriented polypropylene film or a biaxially oriented polyester film, and the thickness of the base film layer is 12 to 25 μm.
4. the super adhesive pre-coating film according to claim 1, wherein the thickness of the hot melt adhesive layer is 15-40 μm, and the mass content of each component is as follows: the ethylene-vinyl acetate copolymer is 87-92%, the MAH monomer is 3-8%, and the balance is the antioxidant, the plasticizer, the initiator, the paraffin and the tackifier.
5. the precoat film according to claim 1, wherein the ethylene-vinyl acetate polymer has a melt index of 16 to 18g/10min at 190 ℃ under 2.16kg, and the vinyl acetate content is 22 wt%.
6. The super bond pre-coat film of claim 1, wherein the MAH monomer is a maleic anhydride monomer and the initiator is dicumyl peroxide.
7. The super bond pre-coat film according to claim 1, wherein the antioxidant is 2, 6-di-tert-butyl-p-cresol, the plasticizer is dibutyl phthalate, and the tackifier is one of rosin esters, petroleum resins, and cumarone indene resins.
8. a method for preparing the super-sticky pre-coated film according to any one of claims 1 to 7, comprising the steps of:
s1, after the substrate film layer is unreeled, carrying out corona treatment on the inner surface of the substrate film layer;
s2, coating a polyethyleneimine solution on the inner surface of the base material film layer, and drying to obtain a primer layer, wherein the mass concentration of the polyethyleneimine solution is 1.5-2.3%;
S3, under the action of a gas oxidant, blending, melting and extruding an ethylene-vinyl acetate polymer, an antioxidant, a plasticizer, an MAH monomer, an initiator, paraffin and a tackifier, and compounding the mixture on the surface of the primer layer by a tape casting method to form a hot melt adhesive layer;
And S4, trimming and measuring the thickness, carrying out high-frequency high-voltage corona treatment on the hot-melt adhesive layer, and finally rolling and cutting.
9. The preparation method according to claim 8, wherein in step S1, the power of the corona treatment is 15-20W/m; in step S4, the power parameter of the high-frequency high-voltage corona treatment is 20-30W/m.
10. The method of claim 8, wherein in step S3, the gaseous oxidant is ozone.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548748A (en) * | 2020-06-09 | 2020-08-18 | 安徽国风塑业股份有限公司 | PTE (Polytetrafluoroethylene) precoating film for preventing surface wetting tension attenuation of film and processing method thereof |
| CN111690330A (en) * | 2020-05-07 | 2020-09-22 | 安徽国风塑业股份有限公司 | Primer-free double-sided adhesive layer polypropylene pre-coating film and preparation method thereof |
| CN114456726A (en) * | 2021-12-28 | 2022-05-10 | 安徽国风塑业股份有限公司 | BOPP digital pre-coating film for low-temperature embossing and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543922A (en) * | 2016-11-02 | 2017-03-29 | 昆山天洋热熔胶有限公司 | It is suitable to the preparation method of the modified EVA hot-melt adhesive and its membrane-based article of masking |
| CN106947404A (en) * | 2017-03-22 | 2017-07-14 | 北京康得新功能材料有限公司 | A kind of Electric radiant Heating Film high temperature resistant precoating encapsulation composite membrane |
| CN108676507A (en) * | 2018-06-01 | 2018-10-19 | 广东环境保护工程职业学院 | A kind of response type wall paper hot melt adhesive film itself and preparation method |
| CN109280530A (en) * | 2018-09-11 | 2019-01-29 | 平湖展鹏热熔胶膜有限公司 | Hot melt adhesive functional material and preparation method thereof, hot melt adhesive are cast naked membrane preparation method |
| CN109337598A (en) * | 2018-08-09 | 2019-02-15 | 安徽国风塑业股份有限公司 | A kind of digital pre-laminating film and preparation method thereof |
-
2019
- 2019-09-20 CN CN201910893470.8A patent/CN110577806A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543922A (en) * | 2016-11-02 | 2017-03-29 | 昆山天洋热熔胶有限公司 | It is suitable to the preparation method of the modified EVA hot-melt adhesive and its membrane-based article of masking |
| CN106947404A (en) * | 2017-03-22 | 2017-07-14 | 北京康得新功能材料有限公司 | A kind of Electric radiant Heating Film high temperature resistant precoating encapsulation composite membrane |
| CN108676507A (en) * | 2018-06-01 | 2018-10-19 | 广东环境保护工程职业学院 | A kind of response type wall paper hot melt adhesive film itself and preparation method |
| CN109337598A (en) * | 2018-08-09 | 2019-02-15 | 安徽国风塑业股份有限公司 | A kind of digital pre-laminating film and preparation method thereof |
| CN109280530A (en) * | 2018-09-11 | 2019-01-29 | 平湖展鹏热熔胶膜有限公司 | Hot melt adhesive functional material and preparation method thereof, hot melt adhesive are cast naked membrane preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 程军等: "《通用塑料手册》", 31 May 2007, 国防工业出版社 * |
| 金银河: "《柔性版印刷》", 31 May 2001, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690330A (en) * | 2020-05-07 | 2020-09-22 | 安徽国风塑业股份有限公司 | Primer-free double-sided adhesive layer polypropylene pre-coating film and preparation method thereof |
| CN111548748A (en) * | 2020-06-09 | 2020-08-18 | 安徽国风塑业股份有限公司 | PTE (Polytetrafluoroethylene) precoating film for preventing surface wetting tension attenuation of film and processing method thereof |
| CN114456726A (en) * | 2021-12-28 | 2022-05-10 | 安徽国风塑业股份有限公司 | BOPP digital pre-coating film for low-temperature embossing and preparation method thereof |
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