WO2020215845A1 - Multi-layer composite color-coated printed metal board, household appliance shell and decorative material - Google Patents

Abstract

Disclosed is a multi-layer composite color-coated printed metal board, comprising a metal board (2). A front face of the metal board (2) is provided with a chemical layer (22). The multi-layer composite color-coated printed metal board further comprises an ultraviolet (UV)-cured ink layer (5) formed on the chemical layer (22) and a protection layer (6) formed on the UV ink layer (5), wherein the UV ink layer (5) is provided with a plurality of first bulges (50), and the protection layer (6) is evenly applied to the UV ink layer (5), such that a plurality of second bulges (60) are formed on the protection layer (6); and the plurality of first bulges (50) of the UV ink layer (5) mutually correspond to the plurality of second bulges (60) of the protection layer (6). The multi-layer composite color-coated printed metal board may further comprise a back paint layer (1), a back chemical layer (21), an anti-corrosion primer layer (3), and a top coat (4). The back chemical layer (21) is formed on a back face of the metal board (2), the back paint layer (1) is formed on the back chemical layer (21), the anti-corrosion primer layer (3) is formed on the chemical layer (22), the top coat (4) is formed on the anti-corrosion primer layer (3), and when the top coat (4) is contained, the UV ink layer (5) is formed on the top coat (4). The multi-layer composite color-coated printed metal board can be applied to a household appliance shell and a decorative material.

Description

Multi-layer composite color-coated printing metal plate, housing of household appliances, and decorative material

Cross references to related applications

This application claims the priority of Chinese patent applications with application numbers CN201920590392X and CN2019103432090 filed on April 26, 2019, the entire contents of which are incorporated into the present invention by reference.

Technical field

The invention relates to the field of household appliances, in particular to a multilayer composite color-coated printed metal plate, a household appliance shell, and decorative materials.

Background technique

At present, in order to increase the aesthetics of home appliances, the shells of home appliances are usually designed with patterns, colors, etc. One of the traditional methods is to cover the shell substrate with a film printed with patterns and colors; the other method is to use roller transfer technology to print ink on the shell substrate. However, the patterns on the shells of traditional home appliances are all flat and cannot present a three-dimensional effect.

Summary of the invention

In view of the above-mentioned shortcomings and problems in the prior art, the purpose of the present invention is to provide a multi-layer composite color-coated printed metal plate, household appliance housing, and decorative material, the surface of which can present a three-dimensional pattern and produce a wood-like surface or ceramic surface. The uneven texture of the surface.

According to the first aspect of the present invention, the present invention adopts the following technical solutions:

A multi-layer composite color-coated printing metal plate, comprising a metal plate, the front side of the metal plate has a chemical layer, the multi-layer composite color-coated printing metal plate also includes a UV ink layer formed on the chemical layer and forming A protective layer on the UV ink layer, the UV ink layer has a plurality of first protrusions, the protective layer is uniformly coated on the UV ink layer, so that the protective layer is formed with a plurality of first protrusions Two protrusions, the plurality of first protrusions of the UV ink layer and the plurality of second protrusions of the protective layer correspond to each other.

In one embodiment, the multi-layer composite color-coated printed metal plate further includes an anticorrosive primer layer and a topcoat layer, the anticorrosive primer layer is formed on the chemical layer, and the topcoat layer is formed on the On the anticorrosive primer layer, the UV ink layer is formed on the topcoat layer.

In one embodiment, the UV ink layer is printed on the topcoat layer.

In a preferred embodiment, the UV ink layer is formed by a patterned UV ink printed on the topcoat layer, and has a plurality of protrusions and depressions.

In one embodiment, the protective layer is coated and formed on the UV ink layer, has a uniform surface density, a uniform thickness, and has a plurality of protrusions and depressions corresponding to the UV ink layer.

In one embodiment, the top paint layer is a white paint layer or a multi-color aluminum powder paint layer.

In an embodiment, the first protrusions of the UV ink layer are uniformly distributed or randomly distributed.

In an embodiment, the first protrusions are strip-shaped protrusions.

In a preferred embodiment, the UV ink layer and the protective layer respectively have an outer surface consistent with a wood surface, and the first protrusion has a shape consistent with a wood grain.

In an embodiment, the first protrusion is a dot-shaped protrusion.

In a preferred embodiment, the UV ink layer and the protective layer respectively have an outer surface consistent with the surface of the ceramic material.

In one embodiment, the protective layer is a transparent paint layer.

In an embodiment, the backside of the metal plate has a backside chemical layer.

In one embodiment, the multi-layer composite color-coated printed metal plate further includes a back paint layer formed on the back surface of the chemical layer.

According to the second aspect of the present invention, the present invention adopts the following technical solutions:

A multi-layer composite color-coated printing metal plate, which is composed of a back paint layer, a back chemical layer, a metal plate, a chemical layer, an anticorrosive primer layer, a top paint layer, and UV ink that are sequentially stacked Layer and protective layer formation; the metal plate is galvanized steel plate, stainless steel plate, electro-galvanized steel plate, aluminum plate or aluminum-plastic plate, with a thickness of 0.2mm～3.0mm; a chemical layer is formed on the front of the metal plate, and the metal The back surface of the board is formed with a back surface chemical layer, the thickness of the chemical layer and the back surface chemical layer are respectively 0.05 to 1 μm; the back paint layer is formed on the back surface chemical layer, and the thickness is 3 μm to 10 μm; The anti-corrosion primer layer is coated and formed on the chemical layer with a thickness of 3 μm to 10 μm; the top paint layer is a white paint layer or a multi-color aluminum powder paint layer formed on the anti-corrosion primer layer , The thickness is 3μm-30μm; the UV ink layer is formed by the patterned UV ink printed on the topcoat layer, has a number of protrusions and depressions, the thickness is 10μm-30μm; the protective layer is formed by coating On the UV ink layer, the surface density is uniform, the thickness is uniform, and the thickness is 3 μm to 30 μm, and there are a plurality of protrusions and depressions corresponding to the UV ink layer; the UV ink layer and the protective layer respectively have The outer surface consistent with the surface of the wood, the first protrusions and the second protrusions are respectively strip protrusions with the same shape as the wood grain, and a plurality of the first protrusions are randomly distributed.

According to the third aspect of the present invention, the present invention adopts the following technical solutions:

A multi-layer composite color-coated printing metal plate, which is composed of a back paint layer, a back chemical layer, a metal plate, a chemical layer, an anticorrosive primer layer, a top paint layer, and UV ink that are sequentially stacked Layer and protective layer formation; the metal plate is galvanized steel plate, stainless steel plate, electro-galvanized steel plate, aluminum plate or aluminum-plastic plate, with a thickness of 0.2mm～3.0mm; a chemical layer is formed on the front of the metal plate, and the metal The back surface of the board is formed with a back surface chemical layer, the thickness of the chemical layer and the back surface chemical layer are respectively 0.05 to 1 μm; the back paint layer is formed on the back surface chemical layer, and the thickness is 3 μm to 10 μm; The anti-corrosion primer layer is coated and formed on the chemical layer with a thickness of 3 μm to 10 μm; the top paint layer is a white paint layer or a multi-color aluminum powder paint layer formed on the anti-corrosion primer layer , The thickness is 3μm-30μm; the UV ink layer is formed by the patterned UV ink printed on the topcoat layer, has a number of protrusions and depressions, the thickness is 10μm-30μm; the protective layer is formed by coating On the UV ink layer, the surface density is uniform, the thickness is uniform, and the thickness is 3 μm to 30 μm, and there are a plurality of protrusions and depressions corresponding to the UV ink layer; the UV ink layer and the protective layer respectively have The outer surface consistent with the surface of the ceramic material, the first protrusions and the second protrusions are respectively dot-shaped protrusions, and a plurality of the first protrusions are randomly distributed.

According to the fourth aspect of the present invention, the present invention adopts the following technical solutions:

A multi-layer composite color-coated printing metal plate includes a metal plate. The multi-layer composite color-coated printing metal plate also includes a chemical layer, an anticorrosive primer layer, and a surface layer that are sequentially stacked on the front surface of the metal plate from the inside to the outside. A lacquer layer, a UV ink layer and a protective layer, the UV ink layer has a plurality of first protrusions, the protective layer is uniformly coated and formed on the UV ink layer, so that the protective layer is formed with a plurality of second The protrusions, the first protrusions of the UV ink layer and the second protrusions of the protective layer correspond to each other.

In an embodiment, the first protrusions of the UV ink layer are uniformly distributed or randomly distributed.

In a preferred embodiment, the first protrusions are strip-shaped protrusions.

More preferably, the UV ink layer and the protective layer respectively have an outer surface consistent with a wood surface, and the first protrusion has a shape consistent with a wood grain.

In another preferred embodiment, the first protrusion is a dot-shaped protrusion.

More preferably, the UV ink layer and the protective layer respectively have an outer surface consistent with the surface of the ceramic material.

In one embodiment, a chemical layer is formed on the front surface of the metal plate, and the anticorrosive primer layer is formed on the chemical layer.

In one embodiment, the UV ink layer is printed on the topcoat layer.

In a preferred embodiment, the UV ink layer is formed by a patterned UV ink printed on the topcoat layer, and has a plurality of protrusions and depressions.

In a further preferred embodiment, the protective layer is coated and formed on the UV ink layer, has a uniform surface density, a uniform thickness, and has a plurality of protrusions and depressions corresponding to the UV ink layer.

In an embodiment, a backside chemical layer is formed on the backside of the metal plate.

In a preferred embodiment, the multi-layer composite color-coated printed metal plate further includes a back paint layer formed on the backside chemical layer by coating.

In one embodiment, the top paint layer is a white paint layer or a multi-color aluminum powder paint layer.

In one embodiment, the protective layer is a transparent paint layer.

In a specific and preferred embodiment, the multi-layer composite color-coated printing metal plate is composed of a back paint layer, a back chemical layer, a metal plate, a chemical layer, an anticorrosive primer layer, a top paint layer, and a UV ink layer stacked in sequence. And the formation of a protective layer; the metal plate is a galvanized steel plate, a stainless steel plate, an electro-galvanized steel plate, an aluminum plate or an aluminum-plastic plate, with a thickness of 0.2mm to 3.0mm; a chemical layer is formed on the front of the metal plate, and the metal plate The back surface of the back surface is formed with a back surface chemical layer, and the thickness of the back surface chemical layer and the back surface chemical layer are respectively 0.05 to 1 μm; the back paint layer is formed on the back surface chemical layer and has a thickness of 3 μm to 10 μm; The anti-corrosion primer layer is coated and formed on the chemical layer with a thickness of 3 μm to 10 μm; the top paint layer is a white paint layer or a multi-color aluminum powder paint layer formed on the anti-corrosion primer layer, The thickness is 3 μm to 30 μm; the UV ink layer is formed by a patterned UV ink printed on the topcoat layer, with multiple protrusions and depressions, and the thickness is 10 μm to 30 μm; the protective layer is coated and formed on On the UV ink layer, the surface density is uniform, the thickness is uniform, the thickness is 3 μm-30 μm, and there are a plurality of protrusions and depressions corresponding to the UV ink layer; the UV ink layer and the protective layer have the same The outer surface of the wood surface is uniform, the first protrusions and the second protrusions are respectively strip protrusions with the same shape as the wood grain, and a plurality of the first protrusions are randomly distributed.

In another specific and preferred embodiment, the multi-layer composite color-coated printing metal plate is composed of a back paint layer, a back chemical layer, a metal plate, a chemical layer, an anti-corrosion primer layer, a top paint layer, and UV inks that are sequentially stacked. Layer and protective layer formation; the metal plate is galvanized steel plate, stainless steel plate, electro-galvanized steel plate, aluminum plate or aluminum-plastic plate, with a thickness of 0.2mm～3.0mm; a chemical layer is formed on the front of the metal plate, and the metal The back surface of the board is formed with a back surface chemical layer, the thickness of the chemical layer and the back surface chemical layer are respectively 0.05 to 1 μm; the back paint layer is formed on the back surface chemical layer, and the thickness is 3 μm to 10 μm; The anti-corrosion primer layer is coated and formed on the chemical layer with a thickness of 3 μm to 10 μm; the top paint layer is a white paint layer or a multi-color aluminum powder paint layer formed on the anti-corrosion primer layer , The thickness is 3μm-30μm; the UV ink layer is formed by the patterned UV ink printed on the topcoat layer, has a number of protrusions and depressions, the thickness is 10μm-30μm; the protective layer is formed by coating On the UV ink layer, the surface density is uniform, the thickness is uniform, and the thickness is 3 μm to 30 μm, and there are a plurality of protrusions and depressions corresponding to the UV ink layer; the UV ink layer and the protective layer respectively have The outer surface consistent with the surface of the ceramic material, the first protrusions and the second protrusions are respectively dot-shaped protrusions, and a plurality of the first protrusions are randomly distributed.

According to the fifth aspect of the present invention, the present invention adopts the following technical solutions:

A housing for a household appliance, which comprises the above-mentioned multilayer composite color-coated printed metal plate.

According to the sixth aspect of the present invention, the present invention adopts the following technical solutions:

A decorative material includes a substrate, and the decorative material further includes the above-mentioned multilayer composite color-coated printing metal plate, and the multilayer composite color-coated printing metal plate is arranged on the surface of the substrate.

In one embodiment, the multilayer composite color-coated printed metal plate covers at least the front surface of the substrate.

The substrate includes but is not limited to gypsum board and aluminum honeycomb board.

The aforementioned metal plates include, but are not limited to, galvanized steel plates, stainless steel plates, electro-galvanized steel plates, aluminum plates, and aluminum-plastic plates.

The above chemical layer is formed by a passivator coated on the front of the metal plate, and the above chemical layer on the back is formed by a passivator coated on the back of the metal plate. The passivator is preferably a chromium-free passivator. Contains chromium and its compounds. The chemical layer and the back chemical layer are intended to increase the adhesion between the metal plate and the paint (eg, anti-corrosion primer layer, back paint layer). Specifically, the passivating agent includes: polyurethane resin, silane compound, fluorozirconic acid and pure water, wherein the weight percentage of the polyurethane resin is 10-20 wt%, the weight percentage of the silane compound is 1-10 wt%, The weight percentage of the acid is 1-10% by weight, and the rest is pure water.

In terms of percentage by weight, the above-mentioned topcoat layer raw material formulation includes the following components: polyester resin 48-52%; solvent naphtha 1-3%; DBE 1-3%; wetting and dispersing agent 0.3-0.5% ；Titanium dioxide 30-34%; Propylene glycol methyl ether acetate 1-3%; Cross-linking resin 8-10%; Polyethylene wax 1-3%; Leveling agent 0.5-1%; Catalyst 0.5-1%; Functional Additives 1-1.5%. Wherein: the functional auxiliary agent is a combination of acrylic modified polyester, 2-butoxyethanol, and dipropylene glycol monomethyl ether, wherein, in terms of mass percentage, the acrylic modified polyester The mass percentage content of the 2-butoxyethanol is 60-80%, the mass percentage content of 2-butoxyethanol is 10-20%, and the mass percentage content of dipropylene glycol monomethyl ether is 10-20%. DBE is a high boiling point solvent mixed dibasic acid ester, a mixture of dibasic acid esters, also known as dibasic acid esters.

The above-mentioned UV ink layer is formed by printing with UV ink, and in parts by weight, the raw materials of the UV ink include:

Modified polyurethane resin 35～45 parts

UV monomer 35～45 parts

Matte powder 7-10 copies

Photoinitiator 5～7 parts

Additives 1～3 copies

Wherein, the UV monomer is acrylic resin. In one embodiment, the matte powder is silica. In one embodiment, the photoinitiator is 1-hydroxycyclohexyl phenyl ketone. In one embodiment, the auxiliary agent is an acrylic polymer. In one embodiment, in terms of parts by weight, the raw material of the UV ink further includes 0.3-0.5 parts of antibacterial agent. Preferably, the antibacterial agent is BBIT (n-butyl-1,2-benzisothiazolin-3-one), which can be combined with modified polyurethane resins, UV monomers, matt powders and other raw materials. Compatible and compatible, it has better antibacterial properties without affecting the original performance of the UV ink layer.

The main raw material of the protective layer is polyurethane.

The present invention adopts the above scheme, and has at least the following advantages compared with the prior art:

By using a UV ink layer with multiple protrusions, and then uniformly coating a protective layer on it, the surface of the multi-layer composite color coated printed metal plate presents a three-dimensional pattern, which not only has the wood grain effect or ceramics similar to the wood surface The texture effect on the surface and the similar uneven texture make the metal color coated printing plate have higher hardness, excellent scratch resistance and better bending performance, and it will not crack after bending; when it is used When used in household appliances or decorative materials, compared to household appliances and other products that use ceramic shells, it can significantly reduce the weight of household appliances and other products and reduce production costs. The recyclable feature highlights the concept of environmental protection.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

Fig. 1 is a schematic structural diagram of a multilayer composite color-coated printed metal plate according to an embodiment of the present invention.

among them:

1. Back paint layer; 2. Metal plate; 21. Back chemical layer; 22. Chemical layer; 3. Anticorrosive primer layer; 4. Top paint layer; 5. UV ink layer; 50. First bump; 6. Protective layer; 60, the second protrusion.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

As shown in this specification and claims, the terms "including" and "including" only suggest that the steps and elements that have been clearly identified are included, and these steps and elements do not constitute an exclusive list. The method or device may also include Other steps or elements. The term "and/or" as used herein includes any combination of one or more related listed items.

It should be noted that, unless otherwise specified, when a feature is called "fixed" or "connected" to another feature, it can be directly fixed and connected to another feature, or indirectly fixed or connected to another feature. One feature. In addition, the descriptions of up, down, left and right used in the present invention are only relative to the mutual positional relationship of the components of the present invention in the drawings.

Referring to Figure 1, a multi-layer composite color-coated printed metal plate includes a metal plate 2, and a chemical layer 22, an anticorrosive primer layer 3, and a topcoat layer 4 are sequentially laminated on the front surface of the metal plate 2 from the inside to the outside. , UV ink layer 5 and protective layer 6. The multi-layer composite color-coated printed metal plate also includes a backside chemical layer 21 formed on the back of the metal plate 2 and a back paint layer 1 formed on the backside chemical layer 21. Preferably, the multi-layer composite color-coated printing metal plate is composed of a back paint layer 1, a back chemical layer 21, a metal plate 2, a chemical layer 22, an anticorrosive primer layer 3, a top paint layer 4, and a UV ink layer stacked in sequence. 5 and the protective layer 6 are closely adhered and laminated to form an 8-layer structure. Wherein, the UV ink layer 5 has a plurality of first protrusions 50, and the protective layer 6 is uniformly coated and formed on the UV ink layer 5, so that the protective layer 6 is also correspondingly formed with a plurality of second protrusions 60, the UV ink layer 5 The plurality of first protrusions 50 and the plurality of second protrusions 60 of the protective layer 6 correspond to each other. The plurality of first protrusions 50 of the UV ink layer 5 and the plurality of second protrusions 60 of the protective layer 6 are evenly distributed or randomly distributed.

The metal plate 2 is a galvanized steel plate, a stainless steel plate, an electro-galvanized steel plate, an aluminum plate or an aluminum-plastic plate.

The chemical layer 22 is formed by a passivation agent coated on the front of the metal plate 2, and the above-mentioned back chemical layer 21 is formed by a passivator coated on the back of the metal plate. The passivator is preferably a chromium-free passivator, Does not contain chromium and its compounds. Further, the passivation agent includes: polyurethane resin, silane compound, fluorozirconic acid and pure water, wherein the weight percentage of the polyurethane resin is 10-20 wt%, the weight percentage of the silane compound is 1-10 wt%, The weight percentage of the acid is 1-10% by weight, and the rest is pure water.

In terms of percentage by weight, the raw material formulation of the topcoat layer 4 includes the following components: polyester resin 48-52%; solvent naphtha 1-3%; DBE 1-3%; wetting and dispersing agent 0.3-0.5%; Titanium dioxide 30-34%; propylene glycol methyl ether acetate 1-3%; cross-linking resin 8-10%; polyethylene wax 1-3%; leveling agent 0.5-1%; catalyst 0.5-1%; functional assistant Agent 1-1.5%. Wherein: the functional auxiliary agent is a combination of acrylic modified polyester, 2-butoxyethanol, and dipropylene glycol monomethyl ether, wherein, in terms of mass percentage, the acrylic modified polyester The mass percentage content of the 2-butoxyethanol is 60-80%, the mass percentage content of 2-butoxyethanol is 10-20%, and the mass percentage content of dipropylene glycol monomethyl ether is 10-20%. DBE is a high boiling point solvent mixed dibasic acid ester, a mixture of dibasic acid esters, also known as dibasic acid esters.

The UV ink layer 5 is formed by printing with UV ink. In parts by weight, the raw materials of the UV ink include: 35 to 45 parts of modified polyurethane resin; 35 to 45 parts of UV monomer; 7 to 10 parts of matte powder; 5-7 parts of initiator; 1-3 parts of auxiliary agent. Wherein, the UV monomer is acrylic resin. In one embodiment, the matte powder is silica. In one embodiment, the photoinitiator is 1-hydroxycyclohexyl phenyl ketone. In one embodiment, the auxiliary agent is an acrylic polymer. In one embodiment, in terms of parts by weight, the raw material of the UV ink further includes 0.3-0.5 parts of antibacterial agent. Preferably, the antibacterial agent is BBIT (n-butyl-1,2-benzisothiazolin-3-one), which can be combined with modified polyurethane resins, UV monomers, matt powders and other raw materials. Compatible and compatible, it has better antibacterial properties without affecting the original performance of the UV ink layer.

The main raw material of the protective layer 6 is polyurethane.

In an application example of the present invention, the first protrusions 50 are strip-shaped protrusions, and a plurality of first protrusions 50 are randomly distributed. The UV ink layer 5 and the protective layer 6 respectively have an outer surface consistent with the surface of the wood. The first protrusion 50 and the second protrusion 60 have a shape consistent with the wood grain, so that the multilayer composite color-coated printed metal plate looks similar The appearance effect of wood texture, the surface has strip-shaped protrusions similar to wood texture but uneven, resulting in a bumpy texture consistent with the wood surface.

In another application example of the present invention, the first protrusions 50 are dot-shaped protrusions, and the plurality of first protrusions 50 are randomly distributed. The UV ink layer 5 and the protective layer 6 each have an outer surface consistent with the surface of the ceramic material, so that the multi-layer composite color-coated printed metal plate presents the appearance effect consistent with the ceramic material, the surface is rough, and the uneven surface is consistent with the ceramic material Texture.

The metal plate 2 is specifically a galvanized steel plate, a stainless steel plate, an electro-galvanized steel plate, an aluminum plate, or an aluminum-plastic plate, with a thickness of 0.2 to 3.0 mm, preferably 0.2 mm to 2.0 mm; the back chemical layer 21 and the chemical layer 22 are respectively coated and formed The thickness of the back and the front of the metal plate 2 are respectively 0.05μm～1μm and 0.05μm～1μm; the back paint layer 1 is formed on the backside chemical layer 21 of the metal plate 2, and the thickness is 3μm～10μm; the anticorrosive primer layer 3 Coating and forming on the chemical layer 22 of the metal plate 2 with a thickness of 3 μm-10 μm; the top coat layer 4 is coated and formed on the anti-corrosion primer layer 3, specifically a white paint layer or a multi-color aluminum powder paint layer, with a thickness of 10μm～30μm; UV ink layer 5 is formed by patterned UV ink printed on topcoat layer 4, its thickness is uneven, with multiple protrusions and depressions, thickness is 10μm-30μm; protective layer 6 is coated and formed on On the UV ink layer 5, the coating is uniform, the surface density is uniform, the thickness is uniform, and the thickness is 3 μm-30 μm, so that it has the same outer surface morphology as the UV ink layer 5, that is, it has corresponding protrusions and depressions.

The preparation process of the above-mentioned metal color-coated printing plate is as follows: respectively coat the front and back of the galvanized steel plate, stainless steel plate, electro-galvanized steel plate, aluminum plate or aluminum-plastic plate with a chromium-free passivator to form a chemical layer 22 and a back chemical layer 21, Then apply anti-corrosion primer and back paint on them respectively, and solidify to form anti-corrosion primer layer 3 and back paint layer 1. Coat white paint layer or multi-color aluminum powder paint on anti-corrosion primer layer 3, and solidify to form white or Multi-color topcoat layer 4; According to the desired pattern design, digitally print UV ink on the topcoat layer 4 to cure to form a concave and convex UV ink layer 5; uniformly coat varnish on the UV ink layer 5, and cure to form a transparent The protective layer 6 exhibits a concave and convex outer surface corresponding to the UV ink layer 5.

A housing of a household appliance, which comprises the above-mentioned multilayer composite color-coated printed metal plate, which is used as an outer layer material for decoration. It can replace heavy ceramic shells, or produce realistic wood texture effects, but it avoids the shortcomings of wood's corrosion resistance, and has the characteristics of environmental protection and recycling.

A decorative material comprising a base material and the above-mentioned multilayer composite color-coated printed metal plate. The base material can be a gypsum board or a honeycomb panel. The color-printed metal plate covers at least the front surface of the base material. It can replace heavy ceramic shells, or produce realistic wood texture effects, but it avoids the shortcomings of wood's corrosion resistance, and has the characteristics of environmental protection and recycling.

Example 1

UV ink composed of the following raw materials:

Modified polyurethane resin: molecular weight is 1300～1900.

UV monomer: acrylic resin, specifically 1,6-hexanediol diacrylate + polyethylene glycol acrylate.

Matte powder: silica.

Photoinitiator: 1-hydroxycyclohexyl phenyl ketone.

Additives: specifically acrylic polymers, which function as leveling agents, wetting agents and defoamers.

Antibacterial agent: BBIT.

The preparation method of the UV ink is to mix the components of Example 1 according to the ratio at room temperature, and then mix them evenly with a mixer. The specific distribution ratio of each group is shown in Table 1.

The preparation process of the multi-layer composite color-coated printed metal plate of this embodiment is as follows: the metal plate 2 is selected from galvanized steel plate, stainless steel plate, and electro-galvanized steel plate, and chromium-free passivation agent is respectively coated on the front and back of the steel plate to form a chemical layer 22 and the back chemical layer 21, and then respectively coat the anti-corrosion primer and the back paint on them, and solidify to form the anti-corrosion primer layer 3 and the back paint layer 1, and coat the aluminum powder paint on the anti-corrosion primer layer 3 to solidify to form a white The topcoat layer 4; According to the desired pattern design, the above-mentioned UV ink is digitally printed on the topcoat layer 4 and cured to form a UV ink layer 5; varnish is uniformly coated on the UV ink layer 5, and cured to form a transparent protective layer 6 .

Example 2

This embodiment provides a multi-layer composite color-coated printing metal plate with the same structure as in embodiment 1, wherein the raw materials and dosage of the UV ink used in the ink layer are shown in Table 1.

Example 3

This embodiment provides a multi-layer composite color-coated printing metal plate with the same structure as in embodiment 1, wherein the raw materials and dosage of the UV ink used in the ink layer are shown in Table 1.

Comparative example 1

This comparative example provides a multi-layer composite color-coated printing metal plate with the same structure as in Example 1. The raw materials and dosage of the UV ink used in the ink layer are shown in Table 1. In this comparative example, the addition amount of polyurethane resin is less, and the others are the same. Example 1.

Comparative example 2

This comparative example provides a multi-layer composite color-coated printing metal plate with the same structure as in Example 1. The raw materials and dosage of UV ink used in the ink layer are shown in Table 1. In this comparative example, no silica is added. Others are the same as in the example. 1.

Table 1 The raw material ratio of the UV ink of the UV ink layer of Examples 1 to 3 and Comparative Examples 1 to 2

The color coated printed metal plates of Examples 1 to 3 and Comparative Examples 1 to 2 were tested for performance, and the test results are shown in Table 2.

Table 2 Performance test results of color coated printed metal plates of Examples 1 to 3 and Comparative Examples 1 to 2

It can be seen from Table 2 that due to the small amount of polyurethane resin added in Comparative Example 1, the surface hardness and acid and alkali resistance of the color-coated printed metal plate are significantly reduced. The absence of silica in Comparative Example 2 also resulted in the reduction of surface anti-pollution properties such as surface hardness and acid and alkali resistance of the color-coated printing metal plate. Due to the synergy of polyurethane resin and silica, the color-coated printed metal plates in Examples 1 to 3 of the present invention significantly enhance the surface hardness, and at the same time exhibit good bending performance and anti-pollution performance, which is convenient for processing and has Excellent antibacterial and antifungal properties.

The above-mentioned embodiments are only to illustrate the technical concept and features of the present invention, and are a preferred embodiment. The purpose is that those familiar with the technology can understand the content of the present invention and implement it accordingly, and cannot limit the present invention. protected range.

Claims (36)

1. A multi-layer composite color-coated printing metal plate, comprising a metal plate, the front side of the metal plate has a chemical layer, and is characterized in that: the multi-layer composite color-coated printing metal plate also includes UV formed on the chemical layer An ink layer and a protective layer formed on the UV ink layer, the UV ink layer has a plurality of first protrusions, and the protective layer is uniformly coated on the UV ink layer, so that the protective layer is formed There are a plurality of second protrusions, and the plurality of first protrusions of the UV ink layer and the plurality of second protrusions of the protective layer correspond to each other.
2. The multi-layer composite color-coated printed metal sheet according to claim 1, wherein the multi-layer composite color-coated printed metal sheet further comprises an anticorrosive primer layer and a topcoat layer, and the anticorrosive primer layer is formed on the On the chemical layer, the top paint layer is formed on the anticorrosive primer layer, and the UV ink layer is formed on the top paint layer.
3. The multilayer composite color-coated printed metal sheet according to claim 2, wherein the UV ink layer is printed on the topcoat layer.
4. The multilayer composite color-coated printed metal plate according to claim 3, wherein the UV ink layer is formed by patterned UV ink printed on the topcoat layer, and has a plurality of protrusions and depressions.
5. The multi-layer composite color-coated printing metal plate according to claim 4, characterized in that: in parts by weight, the raw material of the UV ink comprises:

   Modified polyurethane resin 35～45 parts

   UV monomer 35～45 parts

   Matte powder 7-10 copies

   Photoinitiator 5～7 parts

   Additives 1～3 copies

   Wherein, the UV monomer is acrylic resin.
6. The multi-layer composite color-coated printing metal plate according to claim 5, characterized in that: in parts by weight, the raw material of the UV ink further includes 0.3-0.5 parts of antibacterial agent.
7. The multi-layer composite color-coated printing metal plate according to claim 4, wherein the protective layer is coated and formed on the UV ink layer, has a uniform surface density and a uniform thickness, and is different from the UV ink layer. Corresponding multiple protrusions and depressions.
8. The color coating according to claim 2 The multilayer composite color coating printing metal plate according to claim 1, wherein the top paint layer is a white paint layer or a multi-color aluminum powder paint layer.
9. The multi-layer composite color-coated printed metal plate according to claim 1 or 2, wherein the first protrusions of the UV ink layer are uniformly distributed or randomly distributed.
10. The multilayer composite color-coated printed metal plate according to claim 1 or 2, wherein the first protrusions are strip-shaped protrusions.
11. The multi-layer composite color-coated printing metal plate according to claim 10, wherein the UV ink layer and the protective layer respectively have an outer surface consistent with a wood surface, and the first protrusion has a wood grain Consistent shape.
12. The multilayer composite color-coated printed metal sheet according to claim 1 or 2, wherein the first protrusions are dot-shaped protrusions.
13. The multi-layer composite color-coated printed metal plate according to claim 12, wherein the UV ink layer and the protective layer respectively have an outer surface consistent with the surface of the ceramic material.
14. The multilayer composite color-coated printed metal plate according to claim 1 or 2, wherein the protective layer is a transparent paint layer.
15. The multilayer composite color-coated printed metal plate according to claim 1 or 2, wherein the back side of the metal plate has a backside chemical layer.
16. The multi-layer composite color-coated printed metal plate according to claim 15, wherein the multi-layer composite color-coated printed metal plate further comprises a back paint layer formed on the backside chemical layer.
17. A multi-layer composite color-coated printing metal plate, which is characterized in that the color-coated metal plate is composed of a back paint layer, a back chemical layer, a metal plate, a chemical layer, an anticorrosive primer layer, a top paint layer, and UV inks that are sequentially stacked. Layer and protective layer formation; the metal plate is galvanized steel plate, stainless steel plate, electro-galvanized steel plate, aluminum plate or aluminum-plastic plate, with a thickness of 0.2mm～3.0mm; a chemical layer is formed on the front of the metal plate, and the metal The back surface of the board is formed with a back surface chemical layer, the thickness of the chemical layer and the back surface chemical layer are respectively 0.05 to 1 μm; the back paint layer is formed on the back surface chemical layer, and the thickness is 3 μm to 10 μm; The anti-corrosion primer layer is coated and formed on the chemical layer with a thickness of 3 μm to 10 μm; the top paint layer is a white paint layer or a multi-color aluminum powder paint layer formed on the anti-corrosion primer layer , The thickness is 3μm-30μm; the UV ink layer is formed by the patterned UV ink printed on the topcoat layer, with multiple protrusions and depressions, the thickness is 10μm-30μm; the protective layer is formed by coating On the UV ink layer, the surface density is uniform, the thickness is uniform, and the thickness is 3 μm to 30 μm, and there are a plurality of protrusions and depressions corresponding to the UV ink layer; the UV ink layer and the protective layer respectively have The outer surface consistent with the surface of the wood, the first protrusions and the second protrusions are respectively strip-shaped protrusions with the same shape as the wood grain, and a plurality of the first protrusions are randomly distributed.
18. A multi-layer composite color-coated printing metal plate, which is characterized in that the color-coated metal plate is composed of a back paint layer, a back chemical layer, a metal plate, a chemical layer, an anticorrosive primer layer, a top paint layer, and UV inks that are sequentially stacked. Layer and protective layer formation; the metal plate is galvanized steel plate, stainless steel plate, electro-galvanized steel plate, aluminum plate or aluminum-plastic plate, with a thickness of 0.2mm～3.0mm; a chemical layer is formed on the front of the metal plate, and the metal The back surface of the board is formed with a back surface chemical layer, the thickness of the chemical layer and the back surface chemical layer are respectively 0.05 to 1 μm; the back paint layer is formed on the back surface chemical layer, and the thickness is 3 μm to 10 μm; The anti-corrosion primer layer is coated and formed on the chemical layer with a thickness of 3 μm to 10 μm; the top paint layer is a white paint layer or a multi-color aluminum powder paint layer formed on the anti-corrosion primer layer , The thickness is 3μm-30μm; the UV ink layer is formed by the patterned UV ink printed on the topcoat layer, has a number of protrusions and depressions, the thickness is 10μm-30μm; the protective layer is formed by coating On the UV ink layer, the surface density is uniform, the thickness is uniform, and the thickness is 3 μm to 30 μm, and there are a plurality of protrusions and depressions corresponding to the UV ink layer; the UV ink layer and the protective layer respectively have The outer surface consistent with the surface of the ceramic material, the first protrusions and the second protrusions are respectively dot-shaped protrusions, and a plurality of the first protrusions are randomly distributed.
19. A multi-layer composite color-coated printed metal plate, comprising a metal plate, characterized in that: the multi-layer composite color-coated printed metal plate further includes an anticorrosive primer layer laminated on the front surface of the metal plate from the inside to the outside, A topcoat layer, a UV ink layer and a protective layer, the UV ink layer has a plurality of first protrusions, the protective layer is uniformly coated and formed on the UV ink layer, so that the protective layer is formed with a plurality of first protrusions Two protrusions, the plurality of first protrusions of the UV ink layer and the plurality of second protrusions of the protective layer correspond to each other.
20. The multilayer composite color-coated printing metal plate according to claim 19, wherein the first protrusions of the UV ink layer are uniformly distributed or randomly distributed.
21. The multilayer composite color-coated printed metal plate according to claim 19, wherein the first protrusions are strip-shaped protrusions.
22. The multi-layer composite color-coated printing metal plate according to claim 21, wherein the UV ink layer and the protective layer respectively have an outer surface consistent with a wood surface, and the first protrusion has a wood grain Consistent shape.
23. The multilayer composite color-coated printed metal plate according to claim 19, wherein the first protrusions are dot-shaped protrusions.
24. 23. The multilayer composite color-coated printed metal plate according to claim 23, wherein the UV ink layer and the protective layer respectively have outer surfaces consistent with the surface of the ceramic material.
25. The multi-layer composite color-coated printed metal plate of claim 19, wherein a chemical layer is formed on the front surface of the metal plate, and the anticorrosive primer layer is formed on the chemical layer.
26. The multilayer composite color-coated printing metal plate according to claim 19, wherein the UV ink layer is printed on the topcoat layer.
27. The multilayer composite color-coated printed metal plate according to claim 26, wherein the UV ink layer is formed by patterned UV ink printed on the topcoat layer, and has a plurality of protrusions and depressions.
28. The multi-layer composite color-coated printing metal plate according to claim 27, characterized in that: in parts by weight, the raw material of the UV ink comprises:

    Modified polyurethane resin 35～45 parts

    UV monomer 35～45 parts

    Matte powder 7-10 copies

    Photoinitiator 5～7 parts

    Additives 1～3 copies

    Wherein, the UV monomer is acrylic resin.
29. The multi-layer composite color-coated printing metal plate according to claim 28, characterized in that: in parts by weight, the raw material of the UV ink further comprises 0.3-0.5 parts of antibacterial agent.
30. The multi-layer composite color-coated printing metal plate according to claim 29, wherein the protective layer is coated and formed on the UV ink layer with uniform surface density and uniform thickness, and has the same thickness as the UV ink layer. Corresponding multiple protrusions and depressions.
31. The multi-layer composite color-coated printed metal plate according to claim 19, wherein a backside chemical layer is formed on the back surface of the metal plate.
32. The multi-layer composite color-coated printed metal plate according to claim 31, wherein the multi-layer composite color-coated printed metal plate further comprises a back paint layer formed on the backside chemical layer.
33. The multilayer composite color-coated printed metal sheet according to claim 19, wherein the top paint layer is a white paint layer or a multi-color aluminum powder paint layer.
34. The multi-layer composite color-coated printed metal plate according to claim 19, wherein the protective layer is a transparent paint layer.
35. A housing for household appliances, characterized in that the housing comprises the multilayer composite color-coated printed metal plate according to any one of claims 1-34.
36. A decorative material, comprising a substrate, characterized in that: the decorative material further comprises the multilayer composite color-coated printed metal plate according to any one of claims 1-34, and the multilayer composite color-coated printed metal plate Set on the surface of the substrate.

Images