CN117430993A - Water-based transfer coating, water-based composite laser transfer film and production process of laser transfer film - Google Patents
Water-based transfer coating, water-based composite laser transfer film and production process of laser transfer film Download PDFInfo
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- CN117430993A CN117430993A CN202311513798.5A CN202311513798A CN117430993A CN 117430993 A CN117430993 A CN 117430993A CN 202311513798 A CN202311513798 A CN 202311513798A CN 117430993 A CN117430993 A CN 117430993A
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- 239000000758 substrate Substances 0.000 claims abstract description 23
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- 238000000034 method Methods 0.000 claims abstract description 11
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- 239000004814 polyurethane Substances 0.000 claims abstract description 10
- 239000013530 defoamer Substances 0.000 claims abstract description 7
- 239000012790 adhesive layer Substances 0.000 claims abstract description 6
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 6
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 6
- 239000006184 cosolvent Substances 0.000 claims abstract description 6
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- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims description 47
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
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- 239000007788 liquid Substances 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 12
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims description 10
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- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 4
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- 239000011257 shell material Substances 0.000 claims description 4
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- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
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- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 210000000438 stratum basale Anatomy 0.000 description 2
- SPSPIUSUWPLVKD-UHFFFAOYSA-N 2,3-dibutyl-6-methylphenol Chemical group CCCCC1=CC=C(C)C(O)=C1CCCC SPSPIUSUWPLVKD-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical group CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical group NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
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- 238000004901 spalling Methods 0.000 description 1
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- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Paints Or Removers (AREA)
Abstract
The application relates to the technical field of packaging materials, and particularly discloses a water-based transfer coating, a water-based composite laser transfer film and a production process of the laser transfer film. The aqueous composite laser transfer film comprises a substrate layer, an aqueous transfer coating, an aluminized layer, an aqueous polyurethane adhesive layer and a CPP film layer which are sequentially laminated, wherein the aqueous transfer coating comprises the following components in parts by weight: 25-40 parts of epoxy acrylate resin, 0.5-1.5 parts of graphene, 1.2-1.75 parts of cosolvent, 0.4-0.7 part of antioxidant, 0.25-0.45 part of defoamer, 3-5 parts of sodium dodecyl sulfate, 0.2-0.5 part of preservative and 44-67 parts of water. According to the method, the graphene is added into the water-based transfer coating, so that the water-based transfer coating with good water-resisting property can be obtained, the contact between the aluminized layer and water molecules is hindered, the possibility of corrosion and peeling of the aluminized layer is reduced, and the long-term service performance of the laser transfer film is improved.
Description
Technical Field
The application relates to the technical field of packaging materials, in particular to a water-based transfer coating, a water-based composite laser transfer film and a production process of the laser transfer film.
Background
The laser transfer film has beautiful appearance and excellent anti-counterfeiting function, has low production cost, and is widely applied to various industries such as decoration, packaging, printing and the like. The traditional laser transfer film mainly uses an organic solvent to compound the film and a substrate, which can lead to the diffusion of volatile solvents into the atmosphere, cause environmental pollution and bring about certain potential safety hazards.
There is a waterborne composite laser transfer film in the related art, including stratum basale, waterborne transfer coating, aluminizing layer, waterborne polyurethane adhesive layer and CPP rete that stacks gradually and set up, the stratum basale is the PET membrane, and the waterborne transfer coating is obtained by waterborne transfer coating through curing, and the waterborne transfer coating includes the component of following parts by weight: 25 parts of epoxy acrylate resin, 1.2 parts of cosolvent, 0.4 part of antioxidant, 0.25 part of defoamer, 3 parts of sodium dodecyl sulfate, 0.2 part of preservative and 44 parts of water.
In view of the above-mentioned related art, the inventors believe that although the application of the aqueous transfer coating is realized in the related art, the epoxy acrylate resin is excellent in hydrophilicity and is therefore liable to absorb moisture and become wet after film formation. Under the damp and hot condition, the aluminized layer in the related technology can be corroded, so that the aluminized layer is easy to fall off from the surface of the water-based transfer coating, and the long-term service performance of the laser transfer film is not improved.
Disclosure of Invention
The aluminized layer in the related art can be corroded under the damp and hot condition, so that the aluminized layer is easy to fall off from the surface of the water-based transfer coating, and the long-term service performance of the laser transfer film is not improved. In order to overcome the defect, the application provides a water-based transfer coating, a water-based composite laser transfer film and a production process of the laser transfer film.
In a first aspect, the present application provides a water-based transfer coating, which adopts the following technical scheme:
the water-based transfer coating comprises the following components in parts by weight: 25-40 parts of epoxy acrylate resin, 0.5-1.5 parts of graphene, 1.2-1.75 parts of cosolvent, 0.4-0.7 part of antioxidant, 0.25-0.45 part of defoamer, 3-5 parts of sodium dodecyl sulfate, 0.2-0.5 part of preservative and 44-67 parts of water.
Through adopting above-mentioned technical scheme, graphene has been added in the aqueous transfer coating to this application, and graphene is the nanomaterial of two-dimensional lamellar structure, can be fixed in aqueous transfer coating when aqueous transfer coating solidification film formation to hinder the migration of hydrone through lamellar structure. Meanwhile, the graphene can also fill micropores and defects in the water-based transfer coating, so that the compactness of the water-based transfer coating is improved, and the resistance of water molecules to penetrate the water-based transfer coating is improved. Through adding graphene into the water-based transfer coating, the water-based transfer coating with good water-resisting property can be obtained, so that the contact between an aluminized layer and water molecules is hindered, the possibility of corrosion and peeling of the aluminized layer is reduced, and the long-term service performance of the laser transfer film is improved.
Preferably, the aqueous transfer coating further comprises 1 to 1.5 parts by weight of N-methylol acrylamide.
By adopting the technical scheme, the N-methylol acrylamide has self-crosslinking performance, and a crosslinked product with a certain molecular weight can be formed through self-crosslinking in the baking and curing process of the water-based transfer coating, so that the compactness of the water-based transfer coating after film formation is improved, the water-proof performance of the water-based transfer coating is improved, the contact between an aluminized layer and water molecules is prevented, and the possibility of corrosion and peeling of the aluminized layer under the damp and hot condition is reduced.
Preferably, the components of the water-based transfer coating also comprise waterproof filler, wherein the waterproof filler is activated carbon powder coated with polyurea shell materials on the surface.
Through adopting above-mentioned technical scheme, the polyurea shell layer on waterproof filler surface has good water proof nature and weatherability, adds foretell waterproof filler in the waterborne transfer coating, and waterproof filler can exert the water proof effect jointly with graphite alkene, helps improving the water proof performance of waterborne transfer coating, hinders the contact of aluminizing layer and hydrone. Meanwhile, the waterproof filler can also enable the surface of the water-based transfer coating to have certain roughness, which is favorable for the full combination of the aluminized layer and the water-based transfer coating, thereby reducing the possibility of corrosion and peeling of the aluminized layer under the damp and hot condition.
Preferably, the waterproof filler is prepared according to the following method:
(1) Mixing and stirring water, activated carbon powder, a surfactant and polyvinyl alcohol to obtain a filler dispersion liquid for standby; mixing diisocyanate and toluene under stirring to obtain isocyanate solution, and preserving heat for later use;
(2) Adding filler dispersion liquid into isocyanate solution under heating condition, insulating the obtained mixed liquid, adding amine curing agent and dibutyl tin dilaurate, stirring, recovering solid particles in the mixed liquid, washing and drying to obtain the waterproof filler.
Through adopting above-mentioned technical scheme, the application has prepared filler dispersion and isocyanate solution respectively first, then makes filler dispersion and isocyanate solution mix under the existence of amine curing agent, and diisocyanate and amine curing agent reaction form the polyurea to the cladding forms the polyurea shell layer on activated carbon powder surface, later through washing and drying, can obtain waterproof filler. In the reaction process, the reaction rate of the amine curing agent and the isocyanate group is far higher than that of water and the isocyanate group, so that the occurrence of side reaction can be sufficiently reduced.
Preferably, the activated carbon powder has an average particle diameter of 1.2 to 1.8. Mu.m.
Through adopting above-mentioned technical scheme, preferred the particle diameter scope of active carbon powder, in this particle diameter scope, waterproof filler that uses active carbon powder to prepare can improve waterborne transfer coating surface roughness betterly, and then improves waterborne transfer coating's water proof performance, has reduced aluminizing layer and has taken place the possibility of corruption and spalling under the damp and hot condition.
Preferably, the waterproof filler is used in an amount of 5-9% by weight of the epoxy acrylic resin.
By adopting the technical scheme, the consumption of the waterproof filler is optimized, the waterproof performance of the water-based transfer coating is improved, the contact between the aluminized layer and water molecules is hindered, and the possibility of corrosion and peeling of the aluminized layer under the damp and hot condition is reduced.
In a second aspect, the present application provides an aqueous composite laser transfer film, which adopts the following technical scheme.
The water-based composite laser transfer film comprises a substrate layer, a water-based transfer coating, an aluminum plating layer, a water-based polyurethane adhesive layer and a CPP film layer which are sequentially laminated, wherein the substrate layer is a PET film, and the water-based transfer coating is obtained by baking and curing any water-based transfer coating.
Through adopting above-mentioned technical scheme, the waterborne transfer coating of this application has good water proof performance, consequently can reduce aluminizing layer surface and the contact of hydrone to reduce aluminizing layer and take place the possibility of corruption and peeling off under the damp and hot condition.
In a third aspect, the present application provides a process for producing a laser transfer film, which adopts the following technical scheme.
The production process of the water-based composite laser transfer film comprises the following steps:
(1) Selecting a PET film as a substrate layer;
(2) Coating the water-based transfer coating on the surface of the substrate layer by using a coating machine, and then baking to form a water-based transfer coating on the surface of the substrate layer;
(3) Vacuum aluminizing is carried out on the surface of the water-based transfer coating to obtain an aluminized layer;
(4) Carrying out mould pressing printing on the surface of the aluminized layer to form mould pressing patterns on the surface of the aluminized layer;
(5) Alkali pool aluminum washing is carried out on the aluminum plating layer;
(6) And (3) bonding the aluminized layer and the CPP film layer by using an aqueous polyurethane adhesive to obtain the aqueous composite laser transfer film.
Through adopting above-mentioned technical scheme, this application regard as the substrate with the PET membrane, has compounded waterborne transfer coating, aluminized layer, waterborne polyurethane adhesive layer and CPP rete on the substrate surface in proper order, has obtained waterborne compound laser transfer membrane.
Preferably, the components of the water-based transfer coating comprise waterproof filler, and in the step (2) of the production process, the coating amount of the water-based transfer coating on the surface of the substrate layer is 1.0-1.2g/m 2 。
By adopting the technical scheme, the coating amount of the water-based transfer coating is optimized, and according to the coating amount, the waterproof filler can sufficiently improve the surface roughness of the water-based transfer coating, thereby being beneficial to reducing the possibility of corrosion and peeling of an aluminized layer under the damp and hot condition.
Preferably, in the step (4) of the production process, the embossing pressure of the embossing is 0.3-0.5MPa.
By adopting the technical scheme, the pressure range adopted during the mould pressing printing is optimized, the full contact between the aluminized layer and the water-based transfer coating is facilitated, the water-based transfer coating can fully exert the water-proof effect, and the possibility of corrosion and peeling of the aluminized layer under the damp-heat condition is reduced.
In summary, the present application has the following beneficial effects:
1. according to the method, the graphene is added into the water-based transfer coating, so that the water-based transfer coating with good water-resisting property can be obtained, the contact between the aluminized layer and water molecules is hindered, the possibility of corrosion and peeling of the aluminized layer is reduced, and the long-term service performance of the laser transfer film is improved.
2. According to the waterproof coating, the waterproof filler and the graphene play a synergistic effect, so that the waterproof performance of the water-based transfer coating is improved, and the aluminized layer is prevented from being contacted with water molecules. Meanwhile, the waterproof filler can also enable the surface of the water-based transfer coating to have certain roughness, which is favorable for the full combination of the aluminized layer and the water-based transfer coating, thereby reducing the possibility of corrosion and peeling of the aluminized layer under the damp and hot condition.
Detailed Description
The present application will be described in further detail with reference to examples, preparations and comparative examples, and the raw materials referred to in the present application are all commercially available.
Preparation example of waterproof filler
The following is an example of preparation 1.
Preparation example 1
In this preparation example, the waterproof filler was prepared according to the following method:
(1) Mixing water, activated carbon powder, a surfactant and polyvinyl alcohol according to a weight ratio of 50:5:0.1:2.5, and stirring at a speed of 1300r/min for 40min to obtain a filler dispersion liquid for later use; mixing diisocyanate and toluene according to a weight ratio of 3:100, stirring for 1h at a speed of 1000r/min to obtain an isocyanate solution, and preserving heat at 75 ℃ for later use; the surfactant is n-octanol, the type of polyvinyl alcohol is 1788, the average grain diameter of the activated carbon powder is 0.8 mu m, the diisocyanate is TDI, and the weight ratio of the diisocyanate to the activated carbon powder is 3:5;
(2) Adding filler dispersion liquid into isocyanate solution under heating condition, keeping the temperature of the obtained mixed liquid at 75 ℃, adding amine curing agent and dibutyl tin dilaurate, continuously stirring at the speed of 1000r/min for 4 hours, recovering solid particles in the mixed liquid, washing and drying to obtain waterproof filler; the amine curing agent is diethylenetriamine, and the weight ratio of the amine curing agent to the dibutyltin dilaurate to the activated carbon powder used in the step (1) is 1:1:10.
As shown in Table 1, the preparation examples 1 to 5 were different in that the average particle size of the activated carbon powder was different.
TABLE 1 average particle diameter of activated carbon powder
Examples
Examples 1 to 5
The following description will take example 1 as an example.
Example 1
The embodiment provides a water-based transfer coating, which comprises the following components: 25kg of epoxy acrylate resin, 0.5kg of graphene, 1.2kg of cosolvent, 0.4kg of antioxidant, 0.25kg of defoamer, 3kg of sodium dodecyl sulfate, 0.2kg of preservative and 44kg of water. The model of the epoxy acrylic resin is EA1279A, the CAS of the graphene is 1034343-98-0, the cosolvent is ethylene glycol monobutyl ether, the preservative is nano zinc oxide, the defoamer is BYK defoamer, and the antioxidant is dibutyl hydroxy toluene.
The embodiment also provides a water-based composite laser transfer film, which comprises a substrate layer, a water-based transfer coating, an aluminum plating layer, a water-based polyurethane adhesive layer and a CPP film layer which are sequentially laminated, wherein the substrate layer is a PET film with the thickness of 22 mu m and the surface tension of 37dyn, the thickness of the aluminum plating layer is 300 mu m, and the thickness of the CPP film layer is 30 mu m.
The embodiment also provides a preparation method of the laser transfer film, which comprises the following steps:
(1) Selecting a PET film as a substrate layer;
(2) The coating machine was used to apply a coating speed of 90m/min at a rate of 3.5g/m to the substrate layer surface 2 The coating amount of (2) is coated with an aqueous transfer coating, and then baking is carried out at 95 ℃ for 15 seconds to form an aqueous transfer coating on the surface of the substrate layer;
(3) Vacuum aluminizing is carried out on the surface of the water-based transfer coating to obtain an aluminized layer with the thickness of 300 mu m;
(4) Carrying out mould pressing printing on the surface of the aluminized layer at the speed of 45m/min and the impression pressure of 0.1MPa under the condition of 170 ℃ to form mould pressing patterns on the surface of the aluminized layer;
(5) According to the machine speed of 45m/min, alkali pool aluminum washing is carried out on the aluminized layer in an alkali pool at 60 ℃, and then drying is carried out at 60 ℃;
(6) The aluminum plating layer and the CPP film layer are bonded by using a waterborne polyurethane adhesive at 70 ℃ to obtain a waterborne composite laser transfer film, wherein the dry adhesive amount of the waterborne polyurethane adhesive is 3.2g/m 2 。
As shown in Table 2, examples 1 to 5 were different in mainly the raw material ratios of the water-based transfer coating materials.
Table 2 raw material ratio of aqueous transfer coating
Example 6
This example differs from example 5 in that the components of the aqueous transfer coating further comprise 0.5kg of N-methylolacrylamide.
As shown in Table 3, examples 6 to 10 differ in the amount of N-methylolacrylamide used.
TABLE 3 use of N-methylolacrylamide
| Sample of | Example 6 | Example 7 | Example 8 | Example 9 | Example 10 |
| N-methylolacrylamide/kg | 0.5 | 0.8 | 1 | 1.2 | 1.5 |
Example 11
This example differs from example 10 in that the components of the aqueous transfer coating further include a waterproof filler in an amount of 1% by weight of the epoxy acrylic resin, and the waterproof filler is prepared in the same manner as in preparation example 1.
As shown in Table 4, examples 11 to 15 were different in that the waterproof filler was prepared in different examples.
Table 4 preparation examples of waterproof fillers
| Sample of | Example 11 | Example 12 | Example 13 | Example 14 | Example 15 |
| Preparation example | Preparation example 1 | Preparation example 2 | Preparation example 3 | Preparation example 4 | Preparation example 5 |
As shown in Table 5, examples 15 to 19 were different in that the amount of the waterproof filler to be used was different in terms of the weight percentage of the epoxy-acrylic resin (hereinafter referred to as the waterproof filler ratio).
Table 5 waterproof filler ratio
| Sample of | Example 15 | Example 16 | Example 17 | Example 18 | Example 19 |
| Waterproof filler in% by weight | 1 | 3 | 5 | 7 | 9 |
As shown in Table 6, examples 19 to 23 were different in the coating amount of the aqueous transfer coating on the surface of the substrate layer.
TABLE 6 coating weight of aqueous transfer coating on substrate surface
As shown in table 7, the differences between 23-27 are that the embossing pressures of the embossing printing are different in step (4) of the process for producing laser transfer films.
TABLE 7 imprint pressure
| Sample of | Example 23 | Example 24 | Example 25 | Example 26 | Example 27 |
| Imprinting pressure/MPa | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 |
Comparative example
Comparative example 1
This comparative example differs from example 1 in that the components of the aqueous transfer coating do not include graphene.
Comparative example 2
This comparative example differs from example 1 in that the graphene weight in the aqueous transfer coating component is 0.3kg.
Performance detection test method
Accelerated humid heat aging test was carried out by a Ci3000+xenon lamp weather resistant tester (ATLAS, U.S.) under the test conditions of 50deg.C, RH=95%, the laser transfer films of each example and comparative example were cut into rectangular specimens of 12cm×5cm, accelerated aging was carried out under the test conditions, the time at which the aluminum plating layer of the specimens appeared to peel off from the surface of the aqueous transfer coating layer was detected and recorded as the peeling time t (unit min), and then the ratio between the peeling time of each example and comparative example and the peeling time of comparative example 1 was calculated, and the ratio was recorded as the relative peeling time, and the results are shown in Table 8.
TABLE 8 relative time to break-off
As can be seen by combining examples 1-5 and comparative examples 1-2 and combining table 8, the relative falling time measured in examples 1-5 is greater than that in comparative examples 1-2, which indicates that graphene can fully improve the effect of the aqueous transfer coating only when the aqueous transfer coating contains graphene and the graphene reaches the lower limit of the dosage defined in the application, so that the aqueous transfer coating has better water-proof property, thereby reducing the erosion of the aluminized layer in the damp-heat environment, delaying the falling of the aluminized layer and improving the long-term service performance of the laser transfer film.
As can be seen from the combination of examples 5 and examples 6-10 and table 8, the addition of N-methylolacrylamide delays the time that the aluminized layer falls off in a hot and humid environment, indicating that N-methylolacrylamide reduces the possibility of corrosion and peeling of the aluminized layer under hot and humid conditions. When N-methylolacrylamide is used in an amount of 1 to 1.5 parts by weight, the aluminum plating layer is relatively late to be peeled off.
As can be seen by combining examples 10, 11-15 and table 8, the addition of the waterproof filler can delay the falling off of the aluminized layer, which indicates that the waterproof filler can prevent the aluminized layer from contacting with water molecules, and the surface of the aqueous transfer coating has a certain roughness, which is favorable for the full combination of the aluminized layer and the aqueous transfer coating, and reduces the possibility of corrosion and peeling of the aluminized layer under the damp and hot condition. When the average grain diameter of the activated carbon powder for preparing the waterproof filler is 1.2-1.8 mu m, the water-based transfer coating has better water-proof performance, and correspondingly, the aluminized layer is less prone to falling off in a damp and hot environment.
As can be seen from the combination of examples 15 to 19 and Table 8, when the amount of the waterproof filler is 5 to 9% by weight based on the weight of the epoxy acrylic resin, the water-repellent property of the water-based transfer coating is good, and therefore the aluminum-plated layer is less likely to come off in a hot and humid environment.
As can be seen from the combination of examples 19 to 23 and Table 8, in the case where the water-based transfer coating material contains the waterproof filler, the coating amount of the water-based transfer coating material on the surface of the base layer was set to 1.0 to 1.2g/m 2 The surface roughness of the water-based transfer coating can be fully improved through the waterproof filler, so that the combination effect between the aluminized layer and the water-based transfer coating is improved, and the possibility of corrosion and peeling of the aluminized layer under the damp and hot condition is reduced.
As can be seen from the combination of examples 23 to 27 and Table 8, the drop-off of the aluminum plating layer was relatively late when the imprint pressure for stamp printing was 0.3 to 0.5MPa, indicating that the imprint pressure set in this range contributes to sufficient contact between the aluminum plating layer and the aqueous transfer coating layer, enables the aqueous transfer coating layer to exert a water-blocking effect sufficiently, and reduces the possibility of corrosion and peeling of the aluminum plating layer under wet and hot conditions.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (10)
1. The water-based transfer coating is characterized by comprising the following components in parts by weight: 25-40 parts of epoxy acrylate resin, 0.5-1.5 parts of graphene, 1.2-1.75 parts of cosolvent, 0.4-0.7 part of antioxidant, 0.25-0.45 part of defoamer, 3-5 parts of sodium dodecyl sulfate, 0.2-0.5 part of preservative and 44-67 parts of water.
2. The aqueous transfer coating of claim 1, wherein the components of the aqueous transfer coating further comprise 1 to 1.5 parts by weight of N-methylolacrylamide.
3. The water-based transfer coating according to claim 1, wherein the components of the water-based transfer coating further comprise a waterproof filler, and the waterproof filler is activated carbon powder coated with a polyurea shell material on the surface.
4. The water-based transfer coating according to claim 3, wherein the waterproof filler is prepared according to the following method:
(1) Mixing and stirring water, activated carbon powder, a surfactant and polyvinyl alcohol to obtain a filler dispersion liquid for standby; mixing diisocyanate and toluene under stirring to obtain isocyanate solution, and preserving heat for later use;
(2) Adding filler dispersion liquid into isocyanate solution under heating condition, insulating the obtained mixed liquid, adding amine curing agent and dibutyl tin dilaurate, stirring, recovering solid particles in the mixed liquid, washing and drying to obtain the waterproof filler.
5. The aqueous composite laser transfer film of claim 4, wherein the activated carbon powder has an average particle size of 1.2-1.8 μm.
6. The water-based transfer paint according to claim 4, wherein the waterproof filler is used in an amount of 5 to 9% by weight of the epoxy acrylic resin.
7. The water-based composite laser transfer film is characterized by comprising a substrate layer, a water-based transfer coating, an aluminum plating layer, a water-based polyurethane adhesive layer and a CPP film layer which are sequentially laminated, wherein the substrate layer is a PET film, and the water-based transfer coating is obtained by baking and curing the water-based transfer coating according to any one of claims 1-6.
8. The production process of the laser transfer film is characterized by comprising the following steps of:
(1) Selecting a PET film as a substrate layer;
(2) Coating the aqueous transfer coating according to any one of claims 1 to 6 on the surface of the substrate layer by using a coating machine, and then baking to form an aqueous transfer coating on the surface of the substrate layer;
(3) Vacuum aluminizing is carried out on the surface of the water-based transfer coating to obtain an aluminized layer;
(4) Carrying out mould pressing printing on the surface of the aluminized layer to form mould pressing patterns on the surface of the aluminized layer;
(5) Alkali pool aluminum washing is carried out on the aluminum plating layer;
(6) And (3) bonding the aluminized layer and the CPP film layer by using an aqueous polyurethane adhesive to obtain the aqueous composite laser transfer film.
9. The process for producing a laser transfer film according to claim 8, wherein the component of the aqueous transfer coating comprises a waterproof filler, and in step (2) of the process, the coating amount of the aqueous transfer coating on the surface of the substrate layer is 1.0 to 1.2g/m 2 。
10. The process for producing a laser transfer film according to claim 9, wherein in the step (4) of the production process, the embossing pressure of the embossing printing is 0.3 to 0.5MPa.
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| CN118024702A (en) * | 2024-04-15 | 2024-05-14 | 合力包装科技(青州)有限公司 | Laser film composite material for roof package and preparation method thereof |
| CN118024702B (en) * | 2024-04-15 | 2024-06-07 | 合力包装科技(青州)有限公司 | Laser film composite material for roof package and preparation method thereof |
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