WO2001000411A1

WO2001000411A1 - Printing resin film for laminating high-sharpness decorative laminated sheet excellent in workability and high-sharpness decorative laminated sheet laminated with the resin films

Info

Publication number: WO2001000411A1
Application number: PCT/JP2000/004155
Authority: WO
Inventors: Fumiko Terauchi; Koji Fujii; Hiroyuki Iwashita
Original assignee: Toyo Kohan Co., Ltd.
Priority date: 1999-06-25
Filing date: 2000-06-23
Publication date: 2001-01-04
Also published as: JP3913060B2; AU5429900A; TW524743B

Abstract

A printing resin film for laminating high-sharpness decorative laminated sheet having a workability, printing sharpness and patterns, and being excellent in designing feature, environment adaptability, and surface physical properties such as contamination resistance and solvent resistance; and a high-sharpness decorative laminated sheet laminated with resin films. The printing resin film (1) for laminating high-sharpness decorative laminated sheet is characterized by having as a surface resin layer (11) an oriented resin film having a surface orientation factor and the difference between a maximum and minimum values of in-plane refractive index defined within preset ranges and by being laminated as lower layers thereof with a transparent resin layer excellent in embossing, printing layer, base material resin layer (7), coloring resin layer (5) and adhesion resin layer (4). The high-sharpness decorative laminated sheet (12) is characterized by laminating the above resin films on a substrate (2).

Description

Description Printable resin film for laminating high-definition decorative panels excellent in processability, and resin for laminating high-definition decorative panels

TECHNICAL FIELD The present invention relates to a printed resin film for laminating a high-definition decorative board and a high-definition decorative board laminated with the resin, and more particularly, to an exterior of a home appliance such as an electric refrigerator door and an air conditioner cover, and a steel sheet. Furniture made, furniture, night, building interior

In particular, the present invention relates to a resin film for laminating a high-definition decorative board suitable for an application requiring a high-definition printing pattern and a high-definition decorative board laminated with the resin film. Background art

First, the sharpness referred to in the present invention means the sharpness of the image, that is, the sharpness of the positive / reverse IT image projected on the makeup surface, and the sharpness is evaluated by a portable camera manufactured by Japan Color Research Institute. Sharpness Gloss Meter PGD—Measured by type 4

Conventionally, high-definition decorative panels used for various types of furniture and building interior materials include:

(1) A resin film as a base material is printed using a normal method, and a decorative film provided with a coat layer of acrylic resin, polyester resin, etc. to protect the surface of the printed layer

•

(2) A decorative film in which a transparent biaxially stretched polyester film is laminated via an adhesive layer after printing on a resin layer as a base material,

It is known that a decorative film such as is laminated on a substrate such as zinc-plated steel plate, plywood, or MDF via an adhesive.

However, the decorative board laminated with the decorative film of (1) above has insufficient strength of the decorative film. This method is not suitable for applications such as V-cut processing because of problems such as cracking of the film and easy peeling of the ink at the corners. The decorative board laminated with the decorative film of (2) has excellent surface properties such as stain resistance and solvent resistance, but embossing is required because the surface film has poor flexibility and a high softening temperature. When applied, it is difficult to emboss.

The present invention aims to solve the above problems,

The processability of the biaxially stretched polyester resin film, which is also used for the surface resin layer of the high-definition decorative sheet using the conventional polyvinyl chloride resin film-polyolefin resin film, is secured.

, 0 Excellent printability with a print clarity equivalent to or higher than that of a high-definition decorative sheet using conventional polyvinyl chloride resin film or polyolefin resin film. It is an object of the present invention to provide a printed resin film for laminating a high-definition decorative board excellent in surface physical properties such as solvent resistance and processability, and a high-definition decorative board laminated with the resin film. Disclosure of the invention

The printed resin film for laminating a high-definition decorative board according to the present invention is characterized in that an adhesive resin layer, a base resin layer, a printed layer, and a transparent surface resin layer are sequentially laminated from the bottom.

The following features of the printed resin film for laminated high-definition decorative boards of the present invention include an adhesive resin layer,

V) A color resin layer, a printing layer, a base resin layer, and a transparent surface resin layer were sequentially laminated from the bottom.

The next feature of the printing resin film for laminated high-definition decorative plates of the present invention is that a base resin layer, a printing layer, and a transparent surface resin layer are sequentially laminated from the bottom.

The next feature of the printed resin film for laminating a high-definition decorative board of the present invention is that a colored resin layer, a printing layer, a base resin layer, and a transparent surface resin layer are sequentially laminated from the bottom.

The following features of the high-definition decorative laminate printing resin film of the present invention, the printing layer, An upper layer, which is a pattern printing layer, and a lower layer, which is a color printing layer that conceals the entire surface of the base resin layer and imparts a printing base color of the pattern printing layer.

The next feature of the high-definition decorative laminate printed resin film of the present invention is that the printing layer is a picture printing layer.

The following features of the 5 "high-definition decorative laminate printing resin film of the present invention are as follows. The base resin layer is embossed, and the embossed recesses formed by the embossing are filled with ink. Having a printed layer.

The next feature of the printed resin film for laminated high-definition decorative boards of the present invention is that the surface resin layer is a biaxially stretched polyester resin film.

IC The following features of the high-definition decorative laminate printing resin film of the present invention include:

It is made of Reflate resin.

The next feature of the printed resin film for laminating a high-definition decorative board of the present invention is that the plane orientation coefficient of the resin is 0 to 0.170.

The following features of the printed resin film for laminated high-definition decorative plates of the present invention are that the difference Δη (max-min) between the maximum value and the minimum value of the in-plane refractive index of the resin is 0 to 0.05. That is.

The next feature of the printed resin film for laminated high-definition decorative boards of the present invention is that the base resin layer is made of a polyester resin.

The next feature of the printed resin film for laminated high-definition decorative boards of the present invention is that the base resin layer X) is made of a polybutylene terephthalate resin, a polyvinyl chloride resin, or a polyolefin resin.

The following features of the high-definition decorative laminate printing resin film of the present invention are characterized in that the colored resin layer is a polyester resin kneaded with a color pigment, particularly a polybutyrene terephthalate resin, or a polyvinyl chloride resin kneaded with a color pigment. Or i Polyolefin resin kneaded with a color pigment.

The following features of the printed resin film for laminated high-definition decorative boards of the present invention are as follows: The intrinsic viscosity IV value of the terephthalate resin is 1.0 to 2.0. A feature of the high-definition decorative board of the present invention is that the printed resin film for laminating a high-definition decorative board described above is laminated on at least one surface of a substrate on which the resin film is laminated.

The next feature of the high-definition decorative board of the present invention is that the high-definition decorative board is laminated with an adhesive layer between the substrate and the printing resin film for laminating the high-definition decorative board.

The next feature of the high-definition decorative board of the present invention is that the substrate is a metal plate, a wood board, an inorganic board, or paper.

, D Brief description of drawings

FIG. 1 is a cross-sectional view showing an example of the printed resin film for laminating a high-definition decorative board of the present invention. FIG. 2 is a cross-sectional view showing another example of the printed resin film for laminating a high-definition decorative board of the present invention. FIG. 3 is a cross-sectional view showing another example of the printed resin film for laminating high-definition decorative boards of the present invention. FIG. 4 is a cross-sectional view illustrating an example of the high-definition decorative plate of the present invention. FIG. 5 is a cross-sectional view showing another example of the high definition decorative plate of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

The inventors of the present invention have studied the processability of a biaxially stretched polyester JO resin film having a surface resin layer, which has been used for enhancing sharpness, in a decorative resin laminate printing resin film used for a decorative plate. As a result of intensive studies to satisfy the requirements, the plane orientation coefficient of the resin film was set in the range of 0 to 0.170, and the difference Δn (max− It has been found that by setting the (min) in the range of 0 to 0.05, the workability of the resin film can be improved.

Furthermore, we are keen on printable high-definition resin films that can be laminated on decorative boards that have a pattern with excellent sharpness and design and have excellent surface properties such as stain resistance, melting resistance, and agent properties. As a result of the examination, we selected a copolymerized polyester film as the adhesive resin layer. A polybutylene terephthalate film having an intrinsic viscosity of 1.0 to 2.0 is used as a colored resin layer to be laminated and a base resin layer as a printing base, and a pattern printing layer or pattern is used. By forming a printing layer and a base printing layer, and then sequentially laminating a transparent surface resin layer from the bottom, it can be laminated on a decorative board that satisfies the above required characteristics.

It was found that a resin film could be obtained. After the embossing is performed on the base resin layer to form the embossed concave portion, a wiping print layer formed by filling the embossed concave portion with an ink by using a wiping method may be provided.

Furthermore, the high-definition decorative board made by laminating the above resin film on a metal plate, plywood, inorganic board, paper, etc.

| 0 was also found to be excellent.

Hereinafter, the content of the present invention will be described.

FIG. 1 is a cross-sectional view showing an example of the printed resin film for laminated high-definition decorative board of the present invention. FIGS. 2 and 3 are cross-sectional views showing another example of the printed resin film for laminated high-definition decorative board of the present invention. FIG. 4, FIG. 4 and FIG. 5 are sectional views showing examples of the high-definition decorative panel of the present invention. 1 is high | / printed resin film for laminating decorative board, 2 is substrate, 3 is adhesive layer, 4 is adhesive resin layer, 5 is colored resin layer, 6 a is picture printing layer, 6 b is printing Layer, 7 is a base resin layer, 8 is an embossed concave portion for wiping printing, 9 is a wiving printing layer, 10 is an adhesive layer, 11 is a surface resin layer, and 12 is a high definition decorative plate, respectively. .

As shown in FIG. 1, the printed resin film 1 for laminated high-definition decorative board of the present invention has a base resin layer 7 laminated on an upper surface of an adhesive resin layer 4, and a top surface of the base resin layer 7. A surface resin layer 11 having a pattern printing layer 6a and a solid printing layer 6b provided on the entire back surface is laminated.

As shown in FIG. 2, the printed resin film 1 for laminating a high-definition decorative board according to the present invention has a colored resin layer 5 provided with a pattern printing layer 6 a on the upper surface of an adhesive resin layer 4. A base resin layer 7 provided with a wiping print layer 9 filled with wiping ink is further laminated on an embossed concave portion 8 formed by embossing on the upper surface thereof. The surface resin layer 11 may be laminated on the upper surface of the base resin layer 7 via the adhesive layer 10.

Further, as shown in FIG. 3, the printed resin film 1 for decorative laminate lamination of the present invention comprises a colored resin layer 5 of the printed resin film 1 for decorative laminate lamination shown in FIG. 6b may be both provided.

FIG. 4 shows a high-definition decorative board 12 obtained by laminating the printed resin film 1 for decorative board lamination shown in FIG. 2 on a substrate 2 via an adhesive layer 3.

FIG. 5 shows a high-definition decorative panel 12 in which the printed resin film 1 for decorative panel lamination shown in FIG. 3 is laminated on the substrate 2 via the adhesive layer 3.

if) As the resin of the base resin layer 7 and the colored resin layer 5 of the present invention, a conventionally used polyvinyl chloride resin film or a olefin resin film may be used. It is preferable to use a film, particularly a polybutylene terephthalate film having an intrinsic viscosity (IV value) of 1.0 to 2.0. Further, it is more preferable that the intrinsic viscosity is 1.5 or less from the viewpoint of film forming property and 1.2 or more from the viewpoint of water resistance over time (water resistance ilr property). Further, the colored resin layer 5 can be obtained by kneading the above resin with a colored pigment when forming a film using an extruder.

Similarly to the colored resin layer 5, the base resin layer 7 may be formed into a colored resin layer by kneading a colored pigment in the resin when forming the film using an extruder.

The picture print layer 6a is a print layer that expresses, for example, a wood grain, a stone grain, a surface pattern of natural leather, a cloth grain, an abstract yO pattern, and the base print layer 6b is a base resin layer 7 or a coloring. This is a printing layer that conceals the entire surface of the resin layer 5 and provides the printing base color of the picture printing layer 6a, and heats the base resin layer 7 and the surface resin layer 11 when the adhesive layer 10 is not provided. It is also a layer that gives adhesion. Examples of the vehicle of the ink forming the printing layers 6a and 6b include cellulose derivatives such as nitrocellulose and cellulose acetate, and polyether.

^ Known materials such as steurethane resin can be used, and among these, nitrocellulose-alkyd resin-based inks are preferred from the viewpoint of adhesion and thermal adhesion. Further, when the embossed concave portion 8 is formed by selectively embossing the base resin layer 7 and then the wiping printing method is used to provide the wiping print layer 9 in which the embossed concave portion 8 is filled with ink, As the wiping ink to be filled in the embossed concave portions 8, paint or ink is used.

f) For example, synthetic resins such as natural resins or modified resins thereof, cellulose derivatives, polyester resins, acrylic resins, polyurethane resins, etc. are used as vehicle constituent materials, and coloring pigments, extender pigments, etc. are added to the vehicles. A paint or ink composed of the following is used. As the vehicle to be used, a urethane two-component curing type is suitably used. As the wiping printing method, any of the conventionally used wiping printing methods such as the Doc Yuichi blade method and the roll coat 0 method may be used.

As the surface resin layer 11, it is preferable to use a film of a polyester resin such as polyethylene terephthalate, a polycarbonate film, or an acrylic resin film, and it is more preferable to use a biaxially stretched polyester film. The polyester resin film is made of a polyester resin that does not contain a plasticizer and a halogen element If.

The biaxially stretched polyester resin film preferably has a plane orientation coefficient in the range of 0 to 0.170, and furthermore, a difference Δn (max−max) between the maximum value and the minimum value of the in-plane refractive index. min) is preferably in the range of 0 to 0.05.

The method for calculating the plane orientation coefficient and the method for measuring the refractive index will be described later.If yO and the plane orientation coefficient exceed 0.170, that is, if the degree of orientation becomes too high, the additivity is significantly reduced. Further, when the difference Δn (ma _X — min) between the maximum value and the minimum value of the in-plane refractive index exceeds 0.05, that is, even if the in-plane anisotropy of the orientation becomes too strong, the workability is not improved. Undesirably, directionality occurs, which is not preferable.

As the resin of the adhesive resin layer 4, it is preferable to use a copolymerized polyester resin such as an ethylene terephthalate Z isophthalate copolymer.

Examples of the material constituting the polyester resin include, in addition to the above, A copolymerized polyester resin having the following is preferably used. That is, the soft segments forming the resin include polyoxyalkylene glycols such as polyethylene glycol and polytetramethylene glycol, or polyεalkylprolactone, azeline acid, sebacic acid, dodecandionic acid, and dimer acid. An aliphatic dicarboxylic acid having a molecular structure of 〇OC— [CH ₂ ] n—CO 構造 H and an aliphatic polyester composed of an aliphatic and Z or alicyclic diol are preferably used.

The hard segments that make up the resin include ethylene terephthalate, butylene terephthalate, cyclohexane dimethylene terephthalate, cyclohexane, and jC xandimethylenecyclohexanedicarboxylate, butylene 2,6-naphthalene dichloride. It is preferably composed of at least one selected from aromatic and / or alicyclic ester units such as carboxylate.

Further, it is preferable that the alcohol component contains a 1,4-butanediol residue from the viewpoint of solvent resistance, and that the 1,4-butanediol residue accounts for 4% of all alcohol components i forming the copolymerized polyester. It is preferably from 0 mol% to 65 mol%.

When stronger adhesion to the substrate is required, it is preferable to include an ionomer resin component in a part of the resin component of the adhesive resin layer 4. In this case, it is preferable that the ionomer resin content is 1 to 50% by weight of the whole resin component.

^ The refractive index and the plane orientation coefficient of the resin film, which are important factors in the surface resin layer of the present invention, can be determined by the following methods. That is, the refractive index of the polyester resin film to be used is measured in a direction parallel to the longitudinal direction of the film, in a 90 ° direction, in a 45 ° direction, and in a 135 ° direction. The vertical direction is also measured with an Abbe refractometer. And these parallel directions, 9

^ From the refractive indices in the 0 °, 45 °, and 135 ° directions, find the difference between the maximum and minimum values of the in-plane refractive index (Animax—min). Furthermore, the plane orientation coefficient is calculated using the measured refractive index. Then, it is calculated from the following equation.

Plane orientation coefficient = (A + B) / 2-C

A: Refractive index in parallel direction

B: Refractive index in 90 ° direction

| ^ C: Refractive index in the thickness direction

The high-definition decorative laminate printing resin film '1 of the present invention shown in FIG. 1 can be prepared as follows. That is, a pattern printing layer provided on the lower surface of the surface resin layer 11 on the upper surface on the side of the substrate resin layer 7 of the laminated film of the adhesive resin layer 4 and the substrate resin layer 7 formed as a two-layer film by co-extrusion. 6 a and a printing layer 6 consisting of a solid printing layer 6 b are superimposed on each other, and the co-extruded laminated film of the adhesive resin layer 4 and the base resin layer 7 and the surface resin layer 11 are superimposed. It is sandwiched between them, pressed and bonded, and then heat-sealed and laminated to produce one laminated film. By applying pressure while heating, the surface of the solid printed layer 6 b of the surface resin layer 11 is fused to the base resin layer 7 to form a single printed resin film 1 for high-definition decorative board lamination. It is.

^ In addition, the adhesive resin layer 4 and the colored resin layer 5 kneaded with a pigment are formed into a two-layer film by co-extrusion, a pattern printing layer 6a is applied on the colored resin layer 5, and With the base resin layer 7 superimposed on it, it is passed between a pair of heat rolls, sandwiched and pressed, and heat-sealed to laminate to produce one laminated film. In this case, by using an embossing roll as the heat roll, lamination and embossing of the base resin layer 7 can be performed simultaneously, and the surface of the base resin layer 7 is used for wiping printing. By forming the embossed concave portion 8 and filling the wiping ink with the wiping print layer 9, it is possible to provide a highly designed picture pattern. Further, by laminating the surface resin layer 11 thereon via the adhesive layer 10, it is possible to obtain the printed resin film 1 for laminated high-definition decorative boards shown in FIG. Since the colored resin layer 5 and the base resin layer 7 have excellent dimensional stability, it is possible to suppress expansion and contraction fluctuations caused by tension and heat, and the printed pattern and the embossed pattern are synchronized. An embossed decorative film having a design property can be obtained. The steps such as the above-mentioned laminating work boss processing can be performed with the same equipment as that of the conventional polyvinyl chloride resin film.

Further, by using a resin film having a color printing layer 6b provided on the surface of the colored resin layer 5 of FIG. 2 and a pattern printing layer 6a provided thereon, as shown in FIG. It is also possible to make the printed resin film 1 for decorative laminate laminated by further improving the printing resin film 1 for laminated decorative plate obtained by the above method, with the adhesive layer 3 interposed. 4 and 5

·, 0 The high-definition decorative board 12 can be obtained. Examples of the substrate 2 include wood veneer, wood plywood, particle board, wood board such as MDF, steel plate, aluminum alloy plate, zinc alloy such as zinc, zinc-aluminum alloy, zinc-cobalt-molybdenum alloy. A metal plate such as a galvanized steel plate, or a board or paper made of an inorganic material such as a gypsum board, a calcium silicate board, or an asbestos slate board is used.

\ As the adhesive for the adhesive layer 3 used for laminating the printed resin film 1 for laminating a high-definition decorative board and the substrate 2, general adhesives such as vinyl acetate resin and ethylene-vinyl acetate resin can be used. Emulsion-type adhesives such as urea resin and urethane resin are preferably used because they are safe against fire, have no odor, and are inexpensive.

. The present invention is described in more detail by ₀ following examples.

(Example 1a ~: Lg)

Using a gravure rotary press, a nitrocellulose-alkyd-based ink (manufactured by Showa Ink) is used on one side of a transparent biaxially stretched polyethylene terephthalate film (manufactured by Teijin) having a thickness of 25, and a pattern printing layer and a colored printing layer are printed by a gravure rotary press. Printed in-line ^ and two layers of 70-thick unrolled using a commercially available polybutylene terephthalate resin (PBT) and copolymerized polyester resin (PES) using an extrusion film forming machine Lay the stretched film (thickness ratio: PBT / PES = 4/1) so that the print layer and the PBT film are in contact with each other. Heating temperature of the pressure roll: 200 ° C, feeding speed of the resin film: 2 Om / min, Both films were heat-pressed and laminated under the conditions of a nip pressure of a pressure roll of 15 kgf Zcm ² to prepare a printed resin film for laminating a high-definition decorative board. Next, a polyester-based adhesive to electrolytic zinc alloy plated steel plate having a thickness of 0. 5 mm was coated at a coverage of 5 gZm ^2, a high sharpness veneer laminating printing resin film of the, PE S surface electric The decorative plate was obtained by heating and pressing under the conditions of a heating temperature of 210 ° C, an adhesive pressure of 15 kgf / cm ² , and a pressing time of 5 seconds so as to be in contact with the zinc alloy-plated steel sheet.

j ₀ Here, in Examples 1a to lg, the difference Δn (ma _X — min) between the maximum value and the minimum value of the in-plane refractive index and the in-plane refractive index is a value described in Table 1, respectively. It is a decorative board laminated with a resin film using a biaxially stretched polyethylene terephthalate film.

(Example 2)

A commercially available polybutylene terephthalate resin (PBT) mixed with 20% by weight of a cream pigment and a colored resin and a copolymerized polyester resin (PES) were prepared by an extrusion film forming machine at a thickness ratio of PBT / PES = 4Z1. On one side of the PBT side of a 50-Aim-thick two-layer unstretched film, a nitrocellulose-alkyd-based ink (manufactured by Showa Ink) was used to print a pattern printing layer in-line with a gravure rotary press. The transparent unstretched film μ ■ having a thickness of 70 zm formed by extruding the PBT with an extrusion film-forming machine was opposed to the transparent unstretched film so that the printing surface was in contact with the transparent unstretched film. Under the same conditions, the transparent single-layer film surface is used as the embossing roll side, and the film is pressed between the embossing roll and the silicone rubber roll through the crimping port, and the transparent 透明 film surface is pressed. Then, a three-layer film having embossed concave portions was prepared. Next, a two-component curable urethane-based coloring ink (manufactured by Showa Ink) is applied to the surface having the embossed concave portions by a roll coating method, and then the coloring attached to the portions other than the embossed concave portions by a Doc Yuichi blade. Remove the ink and multiply A colored resin was filled into the embossed concave portions formed on the surface of the layer film and solidified to prepare a printed resin film. Furthermore, the adhesive-coated surface of a transparent biaxially stretched polyethylene terephthalate film (manufactured by Teijin) having a thickness of 25 / xm with epoxy-phenolic adhesive applied to one side is applied to the embossed surface of the printed resin film.

Then, under the same conditions as the lamination conditions by the heat and pressure bonding of Example 1, a high-definition decorative film with excellent design properties is formed by passing the film between a pair of pressure bonding rolls composed of a pair of silicone rubber rolls and pressing. Produced. Next, the thickness of 6 mm of polyurethane adhesive to the wood plywood was coated at a coverage of 50 gZm ^2, the high image clarity veneer laminating printing resin film, PES surfaces as contact with the wood plywood heating Temperature: 160 ° C, Adhesion pressure: 1

, 0 5 kg f Zcm ² , Crimping time: 15 sec.

(Example 3)

The same two-layer unstretched film of PBT and PES as in Example 2 was provided, except that a colored printing layer was provided directly on the PBT on one side, and a pattern printing layer was further provided thereon. Printing was performed under the same conditions as in Example 2. Further, in the same manner as in Example 2, the two-layer unstretched film and the same transparent unstretched film as in Example 2 were laminated and embossed, followed by wiping. After printing and producing a printed resin film, a transparent biaxially stretched polyethylene terephthalate film (manufactured by Teijin) having a thickness of 25 xm is laminated with an adhesive in the same manner as in Example 2 to achieve excellent design. It was created a high sharpness cosmetic fill ^ beam. then, the gypsum board with a thickness of 8 mm to Helsingborg urethane adhesive was coated at a coverage of 80 g / m ^2, printing the high image clarity veneer laminate Heating temperature of resin film: 180 ° C, Adhesion pressure: 15 kgf Zcm ² , Heat bonding was performed under the conditions of a crimping time of 20 seconds to obtain a high-definition decorative board.

(Example 4)

^ After a printing resin film was prepared in the same manner as in Example 2, an epoxy-phenol adhesive was applied to one side of the embossed surface of the printing resin film to a thickness of 25%. The transparent coated biaxially stretched zm polycarbonate film (manufactured by Teijin) is opposed to the adhesive-applied surface and pressed under the same conditions as the laminating conditions by heating and pressing in Example 1 to obtain a high-definition decorative film with excellent design. Produced. Then, the printing resin film for laminating a high-definition decorative board was heat-pressed on a 6-mm-thick wood plywood in the same manner as in Example 2 to obtain a high-i high-definition decorative board.

(Example 5)

After a printed resin film was prepared in the same manner as in Example 3, an epoxy-phenol-based adhesive was applied to one side of the embossed surface of the printed resin film, and a transparent biaxially stretched acrylic resin film having a thickness of 25 m was bonded. Example 1

By applying pressure bonding under the same conditions as the laminating conditions by heat compression bonding, high-definition decorative films with excellent design properties were produced. Next, a polyurethane-based adhesive was applied to a core paper impregnated with a phenol resin having a thickness of 5 mm at an application amount of 20 gZm ² , and the printing resin film for laminated high-definition decorative board was heated at a heating temperature of 180 ° C. bonding pressure: 1 5 kg fZc m ^2, bonding time: thermocompression bonding with the 20-second condition to obtain a high sharpness veneer.

^ (Example 6)

One side of the same transparent biaxially stretched polyethylene terephthalate film as in Example 1 having a pattern printing layer and a colored printing layer printed thereon in the same manner as in Example 1; and Laminate a vinyl resin (PVC) film so that the print layer and the PVC film are in contact with each other. Heat the crimping roll: 180 ° (: The resin film feed rate: 2 Om / min. Under pressure of 15 kgf Zcm 2, both films were heat-pressed and laminated to produce a printed resin film for laminating a high-definition decorative board. the polyester Le based adhesive steel sheet was coated at a coverage of 5 gZm ^2, a high sharpness veneer laminating printing resin film of the, PVC surface is then in contact with the electrolytic zinc alloy plated steel sheet, example 1 )) ', Followed by thermocompression bonding to obtain a decorative board.

(Example 7) A pattern printing layer was printed on one side of a 50 xm-thick unstretched film obtained by forming a colored resin obtained by mixing a commercially available PVC with 15% by weight of a blue pigment by an extrusion film forming machine in the same manner as in Example 2. And a transparent unstretched film having a thickness of 80 βτη, which was formed by coating a commercially available PVC with an extrusion film-forming machine, so that the printed surface was in contact with the transparent unstretched film, and the film was heated in Example 6. Under the same conditions as the lamination conditions by crimping, the transparent PVC single-layer film surface is used as the embossing roll side, and it is passed through a crimping roll consisting of an embossing roll and a silicone rubber roll and crimped to form a transparent PVC film surface. A two-layer film having an embossed concave was prepared. Then, the surface having the embossed concave portion is filled with the coloring ink in the embossed concave portion in the same manner as in Example 2 and solidified.

One printing resin film was prepared. Furthermore, the embossed surface of this printed resin film is faced with the adhesive-coated surface of a transparent biaxially stretched polyethylene terephthalate film (made by Teijin) having a thickness of 25 with epoxy-phenolic adhesive applied on one side. Under the same conditions as the lamination conditions by the heat and pressure bonding of Example 1, high-definition cosmetics with excellent design properties are obtained by being passed between a pair of pressure bonding rolls composed of a pair of silicone rubber rolls and pressed.

||)-Film was produced. Next, a polyurethane adhesive was applied to the same wood plywood as in Example 2 at an application amount of 50 g / m ² , and the printed resin film for laminating a high-definition decorative board was colored with wood plywood. It was heated and pressed in the same manner as in Example 2 so as to be in contact with each other to obtain a decorative board.

(Example 8)

^ One side of the same transparent biaxially stretched polyethylene terephthalate film as in Example 1 on which a pattern printing layer and a colored solid printing layer are printed in the same manner as in Example 1, and 販 Sales thickness 60 // m polypropylene resin (PP) film so that the print layer and the PP film are in contact with each other, and the heating temperature of the pressure roll: 150 ° (: The resin film feed rate: 2 OmZm in, the pressure roll of the two-up pressure: 1 of 5 kgf / cm ²

Under both conditions, the two films were heat-pressed and laminated to produce a printed resin film for high-definition decorative laminates. Next, a polyester-based steel sheet coated with the same electric zinc alloy as in Example 1 was used. The adhesive is applied at a coverage of 5 g / m ^2, the high image clarity veneer printing resin film Lum laminate, as PP surface is in contact with the electrolytic zinc alloy plated steel sheet, as in Example 1 And heat-pressed to obtain a decorative board.

(Example 9)

A pattern printing layer was printed on one side of a 50 im-thick unstretched film obtained by forming a colored resin obtained by mixing a commercially available PP with 15% by weight of a blue pigment using an extrusion film forming machine in the same manner as in Example 2. The heated non-stretched film having a thickness of 75 / im and a commercially available PP formed by an extrusion film-forming machine were opposed to each other such that the printing surface was in contact with the transparent unstretched film, and the heating of Example 8 was performed. Under the same conditions as lamination conditions by crimping,

(D As the embossing roll side, a two-layer film having an embossed concave portion on the surface of a transparent PP film was prepared by passing between an embossing roll and a pressing roll made of a silicone rubber roll and pressing the embossed roll. The printed resin film was prepared by filling and solidifying the colored ink in the embossed concave portions on the surface having the same as in Example 2. Further, the epoxy resin was adhered to the embossed surface of the printed resin film. The adhesive-coated surface of a transparent biaxially-stretched polyethylene terephthalate film (manufactured by Teijin) having a thickness of 25 coated with one side of the adhesive was opposed to the pair of silicon under the same conditions as the lamination conditions by heat compression in Example 1. A high-definition decorative film with excellent design is produced by pressing between rubber rolls. Next, a polyurethane adhesive was applied to the same wood plywood as in Example 2 at an application amount of 50 g / m ² , and the printing resin film for laminating a high-definition decorative board was colored. It was heated and pressed in the same manner as in Example 2 so as to be in contact with the plywood to obtain a decorative board.

(Characteristic evaluation of resin film)

EXAMPLES The high-definition decorative panels prepared in Examples la to lg, 2, 3, 4, 5, 6, 7, 8 and 9 were evaluated for the following characteristics.

(Processability of resin film) The processability of the printed resin film for laminating a high-definition decorative plate of the present invention was evaluated by the method described in Examples 1a to 1g. In accordance with 8 (Metallic material bending test method), 0 T bending was performed, and the surface of the film at the bent portion was visually observed, and evaluated based on the following four criteria. \ ◎: No crack is observed in the bent part.

〇: Faint whitening is observed at the tip of the bent portion.

Δ: Whitening is observed in the entire bent portion.

X: A considerable degree of cracking is observed at the bent portion.

In the above scores, ◎ and Δ have no problem in use. Note that this test was performed on 110 test pieces.

(Embossability for wiving printing)

The quality of the embossability for wiping printing of the printed resin film for laminating high-definition decorative boards of the present invention is determined by the degree of roughness of the surface of the base resin layer of the embossed resin film. In the present invention, the surface of the base resin layer of the resin film that has been embossed using a grained engraved roll provided with an average surface roughness (R a) of 11 mj I is visually observed. Then, the quality of the embossability was evaluated based on the following three criteria.

〇: good, △: slightly bad, X: bad

The above evaluation criteria were obtained by measuring the surface roughness (R a: w ^ m) of a polyvinyl chloride resin film using a SURFCOM surface roughness meter manufactured by Tokyo Seimitsu Co., Ltd. in accordance with JISB0601. If the average surface roughness is 4 m, the embossing process is accepted. The polyvinyl chloride resin film having an average surface roughness of 4 or more has a good appearance (〇). On the other hand, those having an appearance slightly inferior to the surface of the polyvinyl chloride resin film but having no practical problem were judged as poor (△), and those without embossing were judged as defective (X).

(Stain resistance) Example la :! g, 2, 3, 4, 5, 6, 7, 8 and 9 are drawn with black oil-based Magic Ink (registered trademark) on the resin film surface of the outermost layer of the high-definition decorative board. After being left for a time, it was wiped off with a cloth impregnated with ethanol, and the degree of Magic Ink (registered trademark) remaining on the resin film surface was visually observed, and evaluated according to the following criteria.

A: Magic Ink (registered trademark) is not recognized at all.

〇: Very small amount of Magic Ink (registered trademark) remains, which is practically acceptable.

Δ: A slight amount of Magic Ink (registered trademark) remained, which was a problem in practical use, was recognized 1.

X: Magic ink (registered trademark) remains to a considerable extent.

(Solvent resistance)

Examples La to lg, 2, 3, 4, 5, 6, 7, 8, and 9 put a sponge impregnated with methyl ethyl ketone on the resin film surface of the outermost layer of the high-definition decorative panel. After standing for 24 hours, the degree of discoloration and blistering on the film surface was visually observed and evaluated according to the following criteria.

A: No discoloration or swelling is observed.

〇: Extremely slight discoloration or swelling to the extent that there is no practical problem is observed. Δ: Slight discoloration or swelling to such an extent as a practical problem is observed.

^ X: Discoloration and blistering are recognized to a considerable extent.

(Water resistance)

Assuming that the high-definition decorative board of the present invention is aged for a long time in a high-temperature and high-humidity state (for example, when it is used as an interior material of a unit bath), the resin film in the case of being in contact with water for a long time is considered. Water resistance was evaluated by the DuPont impact test method.

i Example la ~: Lg, 2, 3, 4, 5, 6, 7, 8 and 9 were used to laminate the high-definition decorative laminate printing resin film to a 0.5 mm thick electro-zinc alloy. Stacked on plated steel The test pieces were layered. This test piece was cut into a size of 6 OmmX 60 mm, immersed in demineralized water maintained at a temperature of 38 ° C 2 ° C for 1 month, dried at room temperature, and subjected to JISK 5400 using a Dubon impact tester. The impact was applied under the compliant conditions (impact size 1Z 2 inch *, weight lkg, drop height 5 O cm). Loaded shock

The state of the resin film after the If was visually observed and evaluated according to the following five levels.

：: No crack was observed in the resin film.

〇: Fine cracks are observed in a part of the resin film.

Δ: Fine cracks are observed in the entire processed part of the resin film.

X: A large crack is observed in the entire processed portion of the resin film.

| C XX: The entire resin film is significantly cracked.

In the above scores, ◎ and Δ have no problem in use. This test was performed on 10 test pieces.

(Vividness)

Examples la ~: Lg, 2, 3, 4, 5, 6, 7, 8 and 9 for high definition ^ The printed resin film for decorative board lamination is made of 0.5 mm thick electro-zinc alloy The test pieces were laminated on a plated steel sheet. The sharpness of the surface of the test piece was measured with a portable clarity gloss meter PGD-4 manufactured by Japan Color Research Institute. The sharpness referred to in the present invention means image sharpness, that is, the sharpness of a regular reflection image projected on a decorative surface, and high sharpness means that the sharpness is 0.8 or more. Point out.

Table 1 shows the evaluation of the properties of these resin films.

As shown in Table 1, the printed resin film for decorative laminate lamination of the present invention exhibits excellent characteristics in all of embossability, stain resistance, solvent resistance, water deterioration resistance, and sharpness. Industrial applicability

The printed resin film for laminated high-definition decorative board of the present invention is configured as described above, and is also used as a surface resin layer of a high-definition decorative sheet using a conventional polyvinyl chloride resin film resin resin film. The plane orientation coefficient of the biaxially stretched polyester resin film is in the range of 0 to 0.170, and the difference Δn (max_min) between the maximum value and the minimum value of the in-plane refractive index is 0 to 0.1. By defining the content in the range of 0.5, a printing film for a high-definition decorative board having stable processing ability can be obtained.

Furthermore, since the base resin layer and the colored resin layer made of a polybutyrene terephthalate film have little fluctuation in expansion and contraction due to heat and tension, and have excellent dimensional stability, high-definition printed matter with good printing register accuracy Can be obtained.

Also, since the decorative film can be obtained using the same manufacturing method and manufacturing conditions as the conventional polyvinyl chloride resin film, there is no need for capital investment such as the addition of new equipment or the modification of equipment. As with film, it is possible to express a high-definition picture pattern with excellent design, in which the printed pattern and the embossed pattern are synchronized.

In addition, since the resin constituting the base resin layer and the surface resin layer does not contain a plasticizer, problems such as surface contamination due to bleeding of the plasticizer do not occur, and contamination resistance, solvent resistance, Excellent surface properties such as water resistance.

Claims

The scope of the claims

1. A printing resin film for laminating high-definition decorative boards, in which an adhesive resin layer, a base resin layer, a printing layer, and a transparent surface resin layer are sequentially laminated from the bottom.

if 2. An adhesive resin layer, a colored resin layer, a printing layer, a base resin layer, and a transparent surface resin layer.

3. A high-definition printed resin film for decorative board lamination in which a base resin layer, a printed layer, and a transparent surface resin layer are sequentially laminated from the bottom.

4. A printing resin film for laminating high-definition decorative boards, in which a colored resin layer, a printing layer, a base resin layer, and a transparent surface resin layer are sequentially laminated from the bottom.

5. The printing layer is composed of an upper layer which is a pattern printing layer, and a lower layer which is a color printing layer which conceals the entire surface of the base resin layer and gives a printing base color of the pattern printing layer. 5. The printed resin film for laminate of a decorative board according to any one of 1 to 4.

6. The printed resin film according to any one of claims 1 to 4, wherein the printed layer comprises a pattern printed layer.

7. The high-definition fresh food according to any one of claims 1 to 4, wherein the base resin layer is embossed, and has a printing layer in which an embossed recess formed by the embossing is filled with an ink. Printing tree for laminating decorative boards

8. The surface resin layer is made of a biaxially stretched polyester resin film.

(3) The printed resin film for laminating high-definition decorative boards according to any of (1) to (4).

9. The printing resin for laminating a high-definition decorative board according to claim 8, wherein the biaxially stretched polyester resin film has a plane orientation coefficient of 0 to 0.170.

10. The difference Δn (max−min) between the maximum value and the minimum value ^ of the in-plane refractive index of the biaxially stretched polyester resin film is 0 to 0.05. Printing resin for laminating high-definition decorative boards according to 9 '

11. The printed resin film for laminating high-definition decorative boards according to any one of claims 8 to 10, wherein the polyester resin is a polyethylene terephthalate resin.

12. The printed resin film according to claim 1, wherein the base resin layer is made of a polyester resin.

13. The printed resin film for laminating a high-definition decorative board according to claim 2, wherein the colored resin layer is made of a polyester resin kneaded with a colored pigment.

14. The printed resin film for laminating a high-definition decorative board according to claim 12, wherein the polyester resin comprises a polybutylene terephthalate resin.

15. The printing resin film for laminating high-definition decorative boards according to claim 14, wherein the intrinsic viscosity (IV value) of the polybutyrene terephthalate resin is 1.0 to 2,0 t.

16. The printed resin film for laminating high-definition decorative boards according to claim 1, wherein the base resin layer is made of a polyvinyl chloride resin.

17. The printed resin film for laminated high-definition decorative boards according to claim 1 or 3, wherein the base resin layer is made of a polyolefin resin.

18. The printing resin film for laminated high-definition decorative boards according to claim 2, wherein the base resin layer is made of a polyvinyl chloride resin, and the colored resin layer is made of a polyvinyl chloride resin kneaded with a coloring pigment. .

19. The printing resin film for laminated high-definition decorative boards according to claim 2, wherein the base resin layer is made of a polyolefin resin, and the colored resin layer is made of a polyolefin resin kneaded with a colored yJQ pigment.

20. A high-definition decorative board obtained by laminating the printed resin film for laminating a high-definition decorative board according to any one of claims 1 to 19 on at least one surface of a substrate on which the resin film is laminated.

21. The high-definition decorative board according to claim 20, wherein an adhesive layer is laminated between the substrate and the printed resin film for high-definition decorative board lamination.

22. The high-definition decorative plate according to claim 20 or 21, wherein the substrate is a metal plate.

23. The high-definition decorative board according to claim 20 or 21, wherein the substrate is a wooden board.

24. The high definition if decorative board according to claim 20, wherein the substrate is an inorganic board.

25. The high-definition decorative paper according to claim 20 or 21, wherein the substrate is of paper quality.