JP2005059538A - Resin film to be laminated on decorative board, decorative board formed by laminating resin film, unit bath using the board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin film to be laminated on a decorative board excellent in water resistance with time and alkaline resistance and a decorative board made by laminating the resin film. <P>SOLUTION: The resin film for producing the decorative board by lamination comprises a biaxially oriented polyester resin film used as a surface resin layer, a polyester resin film with a tanδ of ≥0.12 as a base resin layer as a printing substrate and a coloring resin layer or a modified polyester resin film in which a part of an acid component of the polyester resin is substituted by isophthalic acid to form a picture image printed layer, further a wiping printing layer formed by embossed recesses formed by embossing the colored resin layer and by filling an ink in the recesses, an surface protecting layer optionally embossed formed on it or further a gloss adjusting layer optionally applied thereon, which are laminated in order from the below to form the resin film for laminating a decorative board, and the decorative board is formed by laminating the resin film on the substrate. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a resin film for laminating a decorative board and a decorative board laminated with the resin film, and more particularly to a resin film for laminating a decorative board suitable for uses requiring water aging resistance and alkali resistance, and a makeup laminated with the resin film. Regarding the board.

Conventionally, as a decorative board used for various furniture and building interior materials,
(1) A decorative film on which a resin layer serving as a base material is printed using a normal method, and a coating layer such as an aminoalkyd resin or a urethane resin is provided 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 serving as a substrate;
(3) A decorative film in which a transparent polyvinyl chloride film or a biaxially stretched polyester film is laminated after printing on a polyvinyl chloride film using a normal method,
A laminate of a decorative film such as galvanized steel sheet, plywood or MDF with an adhesive is known.

  However, since the decorative film laminated with the decorative film of (1) has insufficient strength of the decorative film, when performing V-cut processing or the like, the decorative film is cracked during processing or the ink at the corners is peeled off. There is a problem that it is easy to use, and it is not suitable for applications in which V-cut processing or the like is performed. The decorative board laminated with the decorative film of (2) is excellent in surface physical properties such as stain resistance and solvent resistance, but the surface film is poor in flexibility and has a high softening temperature. Embossing is difficult to enter. The decorative board laminated with the decorative film of (3) uses a polyvinyl chloride film, so the surface properties such as contamination resistance and solvent resistance are inferior, and when incineration and disposal, hydrogen chloride There are problems such as the generation of toxic gas such as gas and harmful substances resulting from it, polluting the environment, and damaging the incinerator during incineration.

  In order to solve these problems, the inventors of the present invention in the following Patent Document 1, in a decorative film composed of an adhesive resin layer, a colored resin layer, a base resin layer, a printed layer, a surface resin layer, etc. It discloses that a film made of a polyester resin having a crystallinity of 55% or less and a (100) plane crystallite size of 50 angstroms or less is used for the base resin layer and / or the colored resin layer. When this decorative film is used as an interior material for a unit bath, it may come into contact with water for a long time or with an antibacterial agent that is an alkaline aqueous solution, and water resistance and alkali resistance are required. Therefore, a decorative film is used in which a polyester resin having a crystallinity and a crystallite size of (100) plane as described above is used as a base resin layer and / or a colored resin layer.

  In the present invention, by using a polyester resin in which the mechanical loss tangent (tan δ) of the resin is specified, it is in contact with water for a long time or in contact with an alkaline aqueous solution due to residual distortion when the decorative board is processed. It has been found that it is possible to suppress the occurrence of cracks at the time. As an example of specifying tan δ of a polyester resin, there is a polyester film described in Patent Document 2 below, and this film specifies tan δ with respect to heat shrinkability.

As described above, the prior art information relating to the present application includes the following.
JP 2001-287326 A JP 2001-205704 A

  The present invention aims to solve the above-mentioned problems, and in particular, a resin film for laminating a decorative board, which is excellent in water aging resistance and alkali resistance, which is essential for a decorative board used around a water such as a unit bath, and the resin. It aims at providing the decorative board which laminated | stacked the film.

The present invention comprises an adhesive resin layer, a colored resin layer, a base resin layer, a printing layer, and a surface resin layer, and the base resin layer and / or the colored resin layer is a dynamic viscosity using a solid viscoelasticity measuring device. A decorative resin laminate resin film (claim 1), comprising a polyester resin having a tan δ value of 0.12 or more determined by elasticity measurement, or a colored resin layer, a base resin layer, a printed layer, a surface It is composed of a resin layer, and the base resin layer and / or the colored resin layer is made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A decorative resin laminate resin film (Claim 2), or an adhesive resin layer, a base resin layer, a printing layer, and a surface resin layer, and the base resin layer is a motion using a solid viscoelasticity measuring device. Obtained by mechanical viscoelasticity measurement It is made of a polyester resin having a value of tan δ of 0.12 or more, or a decorative film laminating resin film (Claim 3), or an adhesive resin layer, a colored resin layer, a printing layer, and a base resin layer The base resin layer and / or the colored resin layer is made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. It is composed of a resin film for laminating a plate (Claim 4), or an adhesive resin layer, a colored resin layer, a base resin layer, and a surface resin layer, and the base resin layer and / or the colored resin layer is a solid viscoelasticity measuring device. A resin film for laminating laminates (claim 5), comprising a polyester resin having a tan δ value of 0.12 or more determined by the dynamic viscoelasticity measurement used, or a base resin layer, a printing layer, A decorative board comprising a surface resin layer, and the base resin layer is made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device A laminated resin film (Claim 6), or a colored resin layer, a printed layer, and a base resin layer, and the base resin layer and / or the colored resin layer is a dynamic viscoelasticity using a solid viscoelasticity measuring device. A decorative resin laminated resin film (Claim 7) comprising a polyester resin having a tan δ value of 0.12 or more determined by measurement, or comprises a base resin layer, a colored resin layer, and a surface resin layer The base resin layer and / or the colored resin layer is made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. It consists of a resin film for board lamination (Claim 8), or an adhesive resin layer, a base resin layer, and a surface resin layer, and the base resin layer is determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A decorative resin laminated resin film (Claim 9) comprising a polyester resin having a tan δ value of 0.12 or more, or an adhesive resin layer, a base resin layer, and a colored resin layer. A resin for laminating decorative plates, wherein the resin layer and / or the colored resin layer is made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device It is composed of a film (Claim 10), or a base resin layer and a surface resin layer, and the base resin layer has a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. Is poly A decorative film laminating resin film comprising a steal resin (Claim 11), or a base resin layer and a colored resin layer, and the base resin layer and / or the colored resin layer is measured for solid viscoelasticity. A resin film for laminating decorative plates, characterized in that it comprises a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using an apparatus, or an adhesive resin layer, a base material A decorative board laminate comprising a resin layer, wherein the base resin layer is made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device Resin film (Claim 13), or a single-layer base resin comprising a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device A decorative film laminating resin film comprising layers (claim 14).

In the decorative film laminating resin film of (Claim 1-14), the polyester resin is polybutylene terephthalate (Claim 15), and the polyester resin is a part of the acid component of polybutylene terephthalate. It is a modified polybutylene terephthalate substituted with an acid (Claim 16), and the polyester resin is polytrimethylene terephthalate (Claim 17). Further, the above (Claims 1-6, 8). , 9, 11), characterized in that the surface resin layer is made of a polyester resin (Claim 18), and the decorative film lamination resin film of (Claim 18), The polyester resin is biaxially stretched polyethylene terephthalate (claimed) Item 19), the polyester resin is polybutylene terephthalate (Claim 20), and the polyester resin is a modified polybutylene terephthalate obtained by substituting part of the acid component of polybutylene terephthalate with isophthalic acid. (Claim 21), and further in the above-mentioned resin film for laminating laminates (Claims 1, 3 to 5, 9, 10, 13), wherein the adhesive resin layer is made of a polyester resin (Claim 22). And the polyester resin is a modified polyethylene terephthalate obtained by substituting a part of the acid component of polyethylene terephthalate with isophthalic acid (claim). Item 23), and the polyester resin is polybutylene terephthalate It is a modified polybutylene terephthalate obtained by substituting a part of the acid component with isophthalic acid (Claim 24), and further (Claims 1, 2, 4, 5, 7, 8, 10, 12). ), The colored resin layer is made of a polyester resin kneaded with a colored pigment (Claim 25), and the decorative film laminated resin film of (Claim 25), The polyester resin is polybutylene terephthalate (Claim 26). Further, in the resin film for decorative laminate of the above (Claim 25), the polyester resin contains a part of the acid component of polybutylene terephthalate. A modified polybutylene terephthalate substituted with isophthalic acid (claim 27), and further (Claim 23) In the decorative board laminate resin film of claim 23, the modified polyethylene terephthalate resin is characterized in that the acid component is isophthalic acid and the copolymerization ratio thereof is 0 to 15 mol% (claim 28), Still further, in the resin film for decorative board lamination according to the above (claims 16, 21, 24, 27), the modified polybutylene terephthalate resin has an acid component of isophthalic acid and a copolymerization ratio of 3 to 20 mol%. (Claim 29).

Further, the decorative board of the present invention is a decorative board in which any one of the above (Claims 1 to 29) is laminated on at least one surface of a substrate on which the resin film is laminated, and the above (Claim 30). In the decorative board of (30) or (31), the decorative board is laminated via an adhesive layer between the substrate and the resin film for laminating the decorative board. The plane orientation coefficient of the biaxially stretched polyethylene terephthalate film of the surface resin layer of the resin film for laminating decorative plates of the above (Claim 19) after being 0.040 to 0.175 (Claim 32), The plane orientation coefficient of the biaxially stretched polyethylene terephthalate film of the surface resin layer of the decorative film laminating resin film according to claim 19 after being laminated on the substrate is 0.1. It is 0 to 0.175 (Claim 33), and in the decorative board according to any of the above (Claims 30 to 33), the board is a metal plate (Claim 34). To do.
Moreover, the unit bus of the present invention is a unit bus (Claim 35) using any one of the decorative panels described above (Claims 30 to 34).

The resin film for decorative laminate of the present invention is configured as described above, and a polyester resin film such as a biaxially stretched polyethylene terephthalate film or a polybutylene terephthalate resin film is used as the surface resin layer, and further, a base for printing. As the material resin layer and the colored resin layer, a polyester resin film such as polybutylene terephthalate or polyethylene terephthalate having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device is used. After forming the pattern print layer, embossing the colored resin layer to form the embossed recess, and then using the wiping method, the embossed recess is filled with ink. Surface-protecting layer that is embossed, or Gloss control layers that are selectively applied on top of each other are laminated in order from the bottom, and the decorative board in which these resin films are laminated on a metal plate is in addition to excellent processability, water resistance, and alkali resistance. Also, the design is excellent. Moreover, the same effect can be obtained by laminating these resin films on a plywood board, an inorganic board, etc. as a decorative board.
In addition, there is no risk of polluting the environment due to the generation of toxic gas such as hydrogen chloride gas and harmful substances caused by it during incineration. It can apply suitably to.

The present invention is described below. The inventors of the present invention have a design pattern with excellent design properties that replaces a polyvinyl chloride resin film that may pollute the environment due to the generation of toxic gas and harmful substances resulting from the incineration, and is resistant to damage. As a result of diligent research on a printable resin film to be laminated on a decorative board that is particularly excellent in water aging resistance and alkali resistance as well as surface properties such as contamination and solvent resistance, a biaxially stretched polyethylene terephthalate film as a surface resin layer And a polyester resin film such as a polybutylene terephthalate resin film, and further, as a base resin layer and a colored resin layer as a printing base, the value of tan δ obtained by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device is Polyesters such as polybutylene terephthalate and polyethylene terephthalate that are 0.12 or more A wiping printing layer is formed by forming an embossed recess by embossing the colored resin layer and then embossing the embossed recess using a wiping method. A decorative board that satisfies the above-mentioned required characteristics by sequentially laminating a surface protective layer that is provided and selectively embossed thereon, or a gloss adjusting layer that is selectively applied thereon. It was found that a resin film laminated on the substrate can be obtained.
Furthermore, it discovered that the decorative board which laminated | stacked said resin film on the metal plate was excellent also in the design property in addition to the said outstanding film physical property of a resin film.

First, the decorative board lamination resin film of this invention is demonstrated.
The example of the resin film for decorative board lamination of this invention is shown with sectional drawing in FIGS. 9 and 10 are sectional views showing examples of the decorative board of the present invention. Each symbol in the figure indicates the following. That is, 1 is a resin film for laminating laminates, 2 is a substrate, 3 is an adhesive layer, 4 is a base resin layer, 5 is a printing layer, 5a is a pattern printing layer, 5b is a solid printing layer, and 6 is a colored resin layer. , 7 is an adhesive resin layer, 8 is an embossed recess for wiping printing, 9 is a wiping print layer, 10 is a surface resin layer, 11 is an embossed recess, 12 is a gloss adjusting layer, and 13 is a decorative plate.

  As shown in FIG. 1, an adhesive resin layer 7, a colored resin layer 6, a base resin layer 4, a printing layer 5, and a surface resin layer 10 are laminated in order from the bottom. It is a five-layer resin film. Of the five resin layers, the three types of layers of the colored resin layer 6, the base resin layer 4, and the printing layer 5 may be laminated in any order between the adhesive resin layer 7 and the surface resin layer 10. Absent. For example, as illustrated in FIG. 2, the adhesive resin layer 7, the base resin layer 4, the colored resin layer 6, the printing layer 5, and the surface resin layer 10 may be sequentially stacked from the bottom. Further, the printing layer 5 may be a solid printing layer 5b as shown in FIG. 1 or may be a picture printing layer 5a as shown in FIG. Furthermore, as shown in FIG. 3, the lower layer may be composed of two layers of a solid print layer 5b and the upper layer may be a pattern print layer 5a.

  As shown in FIG. 4, the decorative film laminating resin film 1 of the present invention is a four-layer resin film in which an adhesive resin layer 7, a base resin layer 4, a printing layer 5, and a surface resin layer 10 are sequentially laminated from the bottom. It may be. Also, under the surface resin layer 10, any three types of the adhesive resin layer 7, the base resin layer 4, the printing layer 5, and the coloring resin layer 6 are the adhesive resin layer 7, and the printing layer As long as 5 does not become the lowermost layer, it may be laminated in any order. The outermost layer may be a base resin layer 4, and a four-layer resin film in which an adhesive resin layer 7, a colored resin layer 6, and a printing layer 5 are sequentially laminated thereunder may be used.

The decorative film laminating resin film 1 of the present invention may be a three-layer resin film in which an adhesive resin layer 7, a printing layer 5, and a surface resin layer 10 are laminated in order from the bottom. Also, under the surface resin layer 10, any two of the adhesive resin layer 7, the base resin layer 4, the printing layer 5, and the colored resin layer 6 are the adhesive resin layer 7, and the printing layer As long as 5 does not become the lowermost layer, it may be laminated in any order. Moreover, the structure which laminated | stacked the base resin layer 4 and the colored resin layer 6 in arbitrary orders on the lowermost layer as the adhesive resin layer 7 may be sufficient.
Furthermore, as shown in FIG. 5, the decorative plate laminating resin film 1 of the present invention may be a two-layer resin film in which an adhesive resin layer 7 and a base resin layer 4 are sequentially laminated from the bottom. In addition, any two of the surface resin layer 10, the adhesive resin layer 7, the base resin layer 4, and the colored resin layer 6 have the surface resin layer 10 as the outermost layer and the adhesive resin layer 7 as the lowermost layer. As long as it is laminated in any order.
Furthermore, as shown in FIG. 6, the decorative film laminating resin film 1 of the present invention may be a single-layer resin film composed of only the base resin layer 4.

Furthermore
As shown in FIG. 7, the decorative film laminating resin film 1 of the present invention is embossed on the upper surface of the colored resin layer 6 laminated on the adhesive resin layer 7 to form an embossed recess 8, and then wiped. The wiping printing layer 9 formed by filling the embossed recess 8 with ink using a method may be provided, or the surface of the surface resin layer 10 may be embossed to provide the embossed recess 11.
In addition, as shown in FIG. 8, the base resin layer 4 may be further provided on the upper surface of the colored resin layer 6 laminated on the adhesive resin layer 7 after embossing to provide the wiping print layer 9. Then, the surface resin layer 10 may be provided with the embossed recess 11 on the surface, and the gloss adjusting layer 12 may be further provided on the surface resin layer 10 to such an extent that the embossed recess 11 does not disappear.

  FIG. 9 shows a decorative board 13 in which the decorative film laminating resin film 1 shown in FIG. FIG. 10 shows a decorative board 13 in which the decorative film laminating resin film 1 shown in FIG. 5 is laminated on the substrate 2 via the adhesive layer 3.

  The decorative board obtained by laminating the resin film for laminating decorative sheets of the present invention on a substrate is intended for use in a high-temperature and high-humidity unit bath or the like, and is required to have excellent water resistance. As the surface resin layer 10, it is preferable to use polybutylene terephthalate or a modified polybutylene terephthalate obtained by substituting a part of the acid component of polybutylene terephthalate with isophthalic acid, or a polyester resin film such as polyethylene terephthalate. The polybutylene terephthalate preferably has an intrinsic viscosity (IV value) of 1.0 to 2.0, but is 1.5 or less from the viewpoint of film forming property, and 1.2 from the viewpoint of water aging resistance (water deterioration resistance). More preferably. Polyethylene terephthalate is preferably biaxially stretched and has a plane orientation coefficient of 0.080 to 0.170. When the plane orientation coefficient is less than 0.080, the water resistance when water droplets adhere to the surface is poor, and it is very difficult to form a film having a plane orientation coefficient exceeding 0.170. The modified polybutylene terephthalate preferably has isophthalic acid as an acid component and a copolymerization ratio of 3 to 20 mol%. However, it is 15 mol% or less from the viewpoint of film forming property and 3 mol% or more from the viewpoint of water resistance. More preferably.

  In addition to the above, as polyester resins, resins blended with polybutylene terephthalate and elastomer, modified polyethylene terephthalate obtained by substituting part of the acid component of polyethylene terephthalate with isophthalic acid, part of the acid component of polybutylene terephthalate is isophthalic acid Modified polybutylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalate, and the like that are substituted with can be used as the surface resin layer 10, and polycarbonate, polyarylate, acrylic resin, and the like can also be used. These films such as polyester resin are films made of a resin not containing a plasticizer and a halogen group element.

  Further, on the surface of these surface resin layers 10, an embossed portion 11 is provided using an embossing roll as shown in FIG. 7 in order to give a three-dimensional effect to the lower printing layer 5 and the base resin layer 4. In order to provide a beautiful surface, a mirror finish processing part may be provided using a mirror surface roll. Furthermore, as shown in FIG. 8, after providing an embossed part on the surface, a gloss adjusting layer 12 is further provided as an upper layer thereof to provide a decorative film laminating resin film 1 with further improved design. .

  The gloss adjusting layer 12 may be colorless and transparent, or colored and transparent, and may be matte transparent, and is provided for adjusting the glossiness of the surface of the resin film 1 for laminating a decorative board. However, it also serves as a surface protective layer. The gloss adjusting layer 12 can be formed by applying a paint using an appropriate vehicle. As the vehicle, one or a mixture of two or more thermosetting resins such as phenol resin, unsaturated polyester resin, epoxy resin, and polyurethane resin can be used. The coating material forming the gloss adjusting layer 12 is usually provided with a desired gloss level by dispersing an appropriate amount of matting agent. Examples of the matting agent include mica, silica, alumina, calcium carbonate, diatomaceous earth, and quartz sand. A shirasu balloon or the like is used. As the coating method of the coating material, a known coating method such as gravure coating, roll coating, air knife coating or the like can be used.

  Next, the base resin layer 4 will be described. In the laminated structure of the resin film shown in Claims 1-14, the base resin layer 4 is used as a lower layer of the colored resin layer 6, with or without the single layer, the outermost layer, the printing layer 5. , Used as a lower layer of the surface resin layer 10. The decorative film laminating resin film 1 of the present invention is required to have water resistance and alkali resistance, but depending on the use environment and use conditions, a multilayer resin film having the base resin layer 4 as the outermost layer, In some cases, a single base resin layer 4 is used. In some cases, sufficient water resistance may not be obtained simply by limiting properties such as the resin component, intrinsic viscosity, and plane orientation coefficient used for the surface resin layer 10 as described above. As described above, in order to obtain a printed resin film for laminating decorative plates, which has sufficient water resistance depending on the use environment and conditions, using a printed resin film for laminating decorative plates having the base resin layer 4 as the outermost layer. In addition to limiting the characteristics of the surface resin layer 10 as described above, it is necessary to use the base resin layer 4 with limited characteristics.

  That is, as the base resin layer 4, modified polybutylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, and modified polybutylene terephthalate obtained by substituting a part of acid components of polybutylene terephthalate and polybutylene terephthalate with isophthalic acid. Blend resin, modified polyethylene terephthalate blend resin obtained by substituting part of acid components of polybutylene terephthalate and polyethylene terephthalate with isophthalic acid, blend resin of polybutylene terephthalate and polytrimethylene terephthalate, blend resin of polybutylene terephthalate and polycarbonate Two-layer resin of modified polybutylene terephthalate and polybutylene terephthalate, polytrimethylene terephthalate and modified polyethylene terephthalate 2-layer resin rate is preferably a polyester resin such as 2-layer resin of polybutylene terephthalate and polytrimethylene terephthalate. In addition, polybutylene terephthalate preferably has an intrinsic viscosity of 1.0 to 2.0, more preferably 1.5 or less from the viewpoint of film forming property and 1.2 or more from the viewpoint of water resistance. . The modified polybutylene terephthalate preferably has isophthalic acid as an acid component and a copolymerization ratio of 3 to 20 mol%. However, it is 15 mol% or less from the viewpoint of film forming property and 3 mol% or more from the viewpoint of water resistance. More preferably. Furthermore, the base resin layer 4 may be formed into a colored resin layer by kneading a color pigment when forming a film using an extruder as in the colored resin layer 6 described later. Furthermore, when the base resin layer 4 is used as the outermost layer of the decorative film laminating resin film, as in the surface resin layer 10, the surface is embossed to provide an embossed recess, or mirror-finished. When the embossing is further performed, the gloss adjusting layer may be provided on the embossed recess so as not to disappear.

  These polyester resins proved to have excellent water resistance and alkali resistance when the value of tanδ determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device shown below is within a certain range. did. That is, particularly excellent water resistance and alkali resistance can be obtained when the value of tan δ is 0.12 or more.

[Dynamic viscoelasticity measurement method]
<Measurement method>
Using a solid viscoelasticity measuring device (for example, dynamic viscoelasticity measuring device manufactured by Orientec Co., Ltd .: RHEOVIBRON DDV-01FP), etc., frequency: 10 Hz, heating temperature: 30 to 200 ° C., heating rate: 10 ° C./min Under the conditions, tan δ of the resin film is obtained.
<Calculation method of tan δ>
Based on JIS K 7244-1 (Plastics—Testing method for dynamic mechanical properties), tan δ is calculated using the following equation. tan δ = M ″ / M ′
Here, M ″: storage elastic modulus and M ′: loss elastic modulus. The maximum value of tan δ is used as an evaluation index.

  Next, the colored resin layer 6 will be described. The colored resin layer 6 is obtained by kneading a color pigment when forming a film of a resin having the same composition as the base resin layer 4 using an extruder. Further, in the laminated structure of the decorative film laminating resin film 1, when the colored resin layer 6 is used as a lower layer of the surface resin layer 10 particularly with or without the outermost layer or the printed layer 5, sufficient water resistance is obtained. In order to ensure the property and alkali resistance, it is preferable that the value of tan δ of the polyester resin constituting the colored resin layer 6 is 0.12 or more in the same manner as the base resin layer 4. Furthermore, when the colored resin layer 6 is used as the outermost layer of the printed resin film for laminating decorative plates, as in the surface resin layer 10, the surface is embossed to provide an embossed recess, or mirror-finished. When the embossing is further performed, the gloss adjusting layer 12 may be provided on the embossed recess so as not to disappear.

  Next, the printing layer 5 will be described. As shown in FIG. 1 or 2, the print layer 5 may be composed of only one of the pattern print layer 5a and the solid print layer 5b, or may be composed of both as shown in FIG. . The pattern print layer 5a is a print layer that expresses a pattern such as a surface pattern such as wood grain, stone pattern, or natural leather, a cloth pattern, or an abstract pattern, for example, and the solid print layer 5b is the base resin layer 4 or the colored resin layer 6 This is a printing layer that conceals the entire surface of the printing layer and gives a printing base color of the pattern printing layer 5a, and also a layer that imparts thermal adhesiveness between the upper and lower resin layers of the printing layer. As the ink vehicle for forming the pattern printing layer 5a and the solid printing layer 5b, known ones such as cellulose derivatives such as nitrocellulose and cellulose acetate, polyester urethane resin, and the like can be used. From both viewpoints, a nitrocellulose-alkyd resin-based ink is preferred. Furthermore, when a stronger adhesion is required when laminating the printing layer and another resin layer, an adhesive layer may be interposed between the two layers.

  Moreover, as shown in FIG. 7 or FIG. 8, after embossing is selectively performed on the surface of the colored resin layer 6 or the base resin layer 4 to form the embossed recesses 8, the embossed recesses are formed using a wiping printing method. 8 may be provided with a wiping printing layer 9 formed by filling ink. In this case, paint or ink is used as the wiping ink filled in the embossed recess 8. For example, a synthetic resin such as a natural resin or its modified resins, cellulose derivatives, polyester resin, acrylic resin, polyurethane resin, etc. is used as a constituent material of the vehicle, and a color pigment, an extender pigment, or the like is added to the vehicle. Paint or ink is used. As the vehicle used, a urethane two-component curable type is suitably used. As the wiping printing method, any of the conventionally used wiping printing methods such as a doctor blade method and a roll coating method may be used.

  Next, the adhesive resin layer 7 will be described. The adhesive resin layer 7 is a modified polyethylene terephthalate obtained by substituting a part of the acid component of polyethylene terephthalate with isophthalic acid, or a modified polybutylene terephthalate obtained by substituting a part of the acid component of polybutylene terephthalate with isophthalic acid. Either is preferable. The modified polyethylene terephthalate has isophthalic acid as an acid component, and the copolymerization ratio thereof is preferably 0 to 15 mol% from the viewpoint of film forming properties and adhesion. The modified polybutylene terephthalate preferably has isophthalic acid as an acid component and a copolymerization ratio of 3 to 20 mol% from the viewpoint of film forming properties and adhesion.

In the polyester resin used in each resin layer constituting the decorative film laminating resin film 1 of the present invention, polyoxyalkylene glycol such as polyethylene glycol and polytetramethylene glycol, or polyε- is used as a soft segment forming the resin. Aliphatic polyesters composed of aliphatic dicarboxylic acids having a molecular structure of HOOC- [CH2] n-COOH such as caprolactone, azelaic acid, sebacic acid, dodecanedioic acid, dimer acid, and aliphatic and / or alicyclic diols, etc. Are preferably used.
The hard segment constituting the resin includes aromatics such as ethylene terephthalate, butylene terephthalate, cyclohexane dimethylene terephthalate, cyclohexane dimethylene cyclohexane dicarboxylate, butylene 2,6 naphthalene dicarboxylate, and / or Alternatively, it is preferably composed of at least one selected from alicyclic ester units.
Further, it is preferable that the alcohol component contains 1,4 butanediol residue from the viewpoint of solvent resistance, and 40 mol% of 1,4 butanediol residue occupies in all the alcohol components forming the copolymer polyester. As mentioned above, it is preferable that it is 65 mol% or less.
Furthermore, from the viewpoint of water resistance, the intrinsic viscosity (IV value) of the resin constituting each resin layer of the surface resin layer, the base resin layer, and the colored resin layer is preferably 1.0 to 2.0.

  Further, when stronger adhesion between the decorative plate laminating resin film 1 and the substrate 2 is required, the resin component of the adhesive resin layer 7, the colored resin layer 6, or the base resin layer 4 in contact with the substrate 2 is used. When an ionomer resin component is contained in part, good adhesion can be obtained. In this case, the ionomer resin component is preferably 1 to 50% by weight of the total resin component.

  The resin film 1 for decorative board lamination shown in FIG. 1 can be produced as follows. That is, a resin for an adhesive resin layer heated and melted from an extruder by coextrusion, a resin for a colored resin layer kneaded with a color pigment, and a resin for a base resin layer are extruded from a T die onto a casting roll to form a three-layer film. Form a film. The solid print layer 5b provided on the lower surface of the surface resin layer 10 is overlaid on the upper surface of the base resin layer, and the sheet is passed between a pair of heat rolls as it is, and is crimped and thermocompression laminated. Is formed into a laminated film. By applying pressure while heating, the surface of the solid printed layer 5b of the surface resin layer 10 is fused to the base resin layer 4 to make one sheet of resin film 1 for decorative plate lamination.

  The decorative film laminating resin film 1 shown in FIG. 2 changes the laminating order of the colored resin layer and the base resin layer when a three-layer laminated film is formed by coextrusion, and pattern printing is performed on the lower surface of the surface resin layer 10. It is made in the same manner as described above except that the layer 5a is provided.

  A decorative film laminating resin film 1 shown in FIG. 3 is formed by co-extrusion to form a three-layer film of an adhesive resin layer 7, a colored resin layer 6, and a base resin layer 4. The print layer 5 composed of the pattern print layer 5a and the solid print layer 5b provided on the lower surface of the surface resin layer 10 is superposed on the upper surface, passed between a pair of hot rolls as it is, and laminated by thermocompression bonding. It forms into a sheet of laminated film.

  A decorative film laminating resin film 1 shown in FIG. 4 is a print provided on the lower surface of the surface resin layer 10 on the upper surface of the two laminated films of the adhesive resin layer 7 and the base resin layer 4 formed as a co-extruded film. The layers 5 are superposed, passed between a pair of heat rolls as they are, and laminated by thermocompression bonding to form a single laminated film.

  A decorative film laminating resin film 1 shown in FIG. 5 is formed as a laminated film of two layers of an adhesive resin layer 7 and a base resin layer 4 by coextrusion, and the decorative board laminating resin film shown in FIG. 1 is formed by forming the base resin layer 4 as a single layer film.

  The decorative plate laminating resin film 1 shown in FIG. 7 is formed as follows. First, when laminating the adhesive resin layer 7 and the colored resin layer 6 to form a two-layer pre-laminated film, an embossing roll is used as a heat roll, and the adhesive resin layer 7 and the heated embossing roll are Lamination and embossing of the colored resin layer 6 are performed simultaneously by overlapping and sandwiching the colored resin layer 6. By providing the wiping printing layer 9 by filling the embossed recesses 8 of the colored resin layer 6 thus provided with the wiping ink, it is possible to give a high design pattern. Further, the embossed concave portion 11 is formed on the upper surface of the surface resin layer 10 by superimposing the printed layer 5 provided on the lower surface of the surface resin layer 10 on the upper surface of the base resin layer 4 and passing it between heated embossing rolls. Another pre-laminated film with 3 layers is obtained. These two preliminary films are overlapped and sandwiched so that the colored resin layer 6 and the base resin layer 4 are in contact with each other, thereby forming a three-dimensional decorative film laminating resin film 1 shown in FIG. be able to.

The decorative film laminating resin film 1 shown in FIG. 8 has a design property by forming the gloss adjusting layer 12 on the embossed recess on the upper surface of the surface resin layer 10 in the decorative film laminating resin film 1 shown in FIG. It can be set as the resin film 1 for decorative board lamination improved further.
Since the decorative film laminating resin film 1 of the present invention obtained as described above is excellent in dimensional stability, it is possible to suppress expansion and contraction variation caused by tension and heat, and the printed pattern and the embossed pattern are synchronized. It can be set as an embossed decorative film having design properties. Steps such as the above laminating operation and embossing can be performed with the same equipment as in the conventional polyvinyl chloride resin film.

The decorative plate 13 as shown in FIG. 9 or FIG. 10 is obtained by pasting the decorative plate laminating resin film 1 thus obtained directly or with the substrate 2 with the adhesive layer 3 interposed therebetween. .
As an adhesive of the adhesive layer 3 used when the adhesive layer 3 is laminated, a general adhesive, for example, polyester resin type, vinyl acetate resin type, ethylene-vinyl acetate resin type, urea resin is used. Emulsion type adhesives such as polyurethane and urethane resin are preferably used because they are safe against fire, have no odor, and are inexpensive.

  As the substrate 2, for example, a metal plate such as a wood single plate, wood plywood, particle board, wood plate such as MDF, a steel plate, an aluminum alloy plate, a galvanized steel plate plated with zinc or a zinc alloy is used. Moreover, it is good also as a decorative board using boards which consist of inorganic substances, such as a gypsum board, a calcium silicate board, and an asbestos slate board.

  In the decorative plate laminating resin film 1 after being laminated on the substrate as described above, when a biaxially stretched polyethylene terephthalate film is used for the surface resin layer 10, the plane orientation coefficient after laminating varies depending on the application. Is preferably in the range of 0.040 to 0.175. In particular, in an application requiring alkali resistance such as a unit bath in which an alkaline soot removing agent is used, it is preferably in the range of 0.160 to 0.175. In order to obtain this suitable plane orientation coefficient after being laminated on the substrate, it is necessary to appropriately select the plane orientation coefficient of the biaxially stretched polyethylene terephthalate film before lamination, the heat setting temperature, and the heating conditions during lamination. . Oriented crystals of a biaxially stretched polyethylene terephthalate film become amorphous when heated to a temperature higher than the heat setting temperature at the time of film formation, and the adhesiveness is improved. It deteriorates to. Therefore, when heat lamination with a layer such as a lower base resin layer or embossing of the base resin layer is performed, good adhesion and embossability with the lower resin layer can be obtained. It is preferable to use a biaxially stretched polyethylene terephthalate film that is heat-set at a temperature equal to or higher than the heating temperature required for the above.

Next, the present invention will be described in more detail with reference to examples.
A resin composed of various polyester resins having a thickness of 25 μm, each having a value of tan δ shown in Tables 1 and 2, and a resin obtained by kneading 20% by weight of a cream-colored pigment in a resin similar to the substrate layer A resin film for laminating decorative plates using the following 23 types of film-forming methods A to W, using a resin comprising a polyester resin shown in Tables 1 and 2 as a surface resin layer and an adhesive resin layer as a colored resin layer It was created.

  [A]: A resin for an adhesive resin layer, a resin for a base resin layer, and a resin for a colored resin layer kneaded with a color pigment, which are heated and melted from an extruder by coextrusion, are extruded from a T die onto a casting roll and have a thickness of 60 μm. A three-layer laminated film was formed. A solid printing layer is printed by a gravure rotary press on the lower surface of a film that is a separately formed 25 μm thick surface resin layer, and the printing layer and the colored resin layer of the three-layer resin are overlapped, and the heating temperature of the pressure bonding roll is 120 ° C. Both films were heat-pressed and laminated under the conditions of a resin film feed rate of 20 m / min and a nip pressure for pressure bonding of 2.45 MPa to obtain a resin film for laminating decorative plates.

  [B]: In the film-forming method of [A], the order of lamination of the base resin layer and the colored resin layer was changed, and the adhesive resin layer, the colored resin layer, and the base resin layer were heated and melted from an extruder by coextrusion. A laminated film having a thickness of 60 μm was formed. In addition, a pattern printing layer is printed on the lower surface of a 25 μm-thick surface resin layer, which is separately formed, by a gravure rotary press, and the printed layer and the base resin layer of the three-layer resin are overlapped to form the film of [A] Both films were laminated by thermocompression bonding in the same manner as in the above method to obtain a resin film for decorative plate lamination.

  [C]: In the film-forming method of [B], both films were formed in the same manner as in the film-forming method of [B] except that a transparent resin film without a printed layer was used as the film to be a 25 μm-thick surface resin layer. The film was laminated by thermocompression bonding to obtain a decorative film laminating resin film.

  [D]: A base resin layer resin heated and melted from an extruder by coextrusion, and a colored resin layer resin kneaded with a color pigment are extruded from a T die onto a casting roll to form a two-layer laminated film having a thickness of 50 μm. A film was formed. A pattern printing layer and a solid printing layer are printed on the lower surface of the film to be a 25 μm-thick surface resin layer separately formed in the same manner as in the film forming method of [A] by a gravure rotary press, and the solid printing layer and the two-layer resin are printed. In the same manner as in the film forming method [A], both films were laminated by thermocompression bonding to obtain a decorative film laminating resin film.

  [E]: In the film forming method of [D], the order of lamination of the base resin layer and the colored resin layer is changed, and the thickness comprising two layers of the colored resin layer and the base resin layer heated and melted from the extruder by coextrusion. A laminated film having a thickness of 50 μm was formed. In addition, a pattern printing layer is printed on the lower surface of a 25 μm-thick surface resin layer, which is separately formed, by a gravure rotary press, and the printed layer and the base resin layer of the two-layer resin are overlapped to form the film [D] Both films were laminated by thermocompression bonding in the same manner as in the above method to obtain a resin film for decorative plate lamination.

  [F]: In the film formation method of [D], both films were formed in the same manner as in the film formation method of [D] except that a transparent resin film without a printed layer was used as the film to be a 25 μm thick surface resin layer. The film was laminated by thermocompression bonding to obtain a decorative film laminating resin film.

  [G]: In the film formation method of [E], both films were formed in the same manner as in the film formation method of [E], except that a transparent resin film without a printed layer was used as the film to be the surface resin layer having a thickness of 25 μm. The film was laminated by thermocompression bonding to obtain a decorative film laminating resin film.

  [H]: A resin for an adhesive resin layer and a resin for a base resin layer, which were heated and melted from an extruder by coextrusion, were extruded from a T die onto a casting roll to form a two-layer laminated film having a thickness of 50 μm. A solid printing layer is printed on the lower surface of a film, which is a separately formed 25 μm-thick surface resin layer, by a gravure rotary press, and the printing layer and the base resin layer of the two-layer resin are overlapped. Both films were heat-pressed and laminated under the conditions of ° C., resin film feed rate: 20 m / min, and nip pressure for pressure bonding: 2.45 MPa to obtain a resin film for decorative plate lamination.

  [I]: In the film formation method of [H], both films were formed in the same manner as in the film formation method of [H], except that a transparent resin film without a printed layer was used as the film to be a 25 μm-thick surface resin layer. The film was laminated by thermocompression bonding to obtain a decorative film laminating resin film.

  [J]: A base resin layer resin heated and melted from an extruder was extruded from a T-die onto a casting roll to form a single-layer film having a thickness of 40 μm. A pattern printing layer is printed by a gravure rotary press on the lower surface of a 25 μm-thick surface resin layer formed separately, the printed layer and the base resin layer are overlapped, and the heating temperature of the pressure bonding roll is 120 ° C., resin film Both films were heat-pressed and laminated under the conditions of a feed rate of 20 m / min and a nip pressure for pressure bonding of 2.45 MPa to obtain a resin film for laminating decorative plates.

  [K]: In the film formation method of [J], both films were formed in the same manner as the film formation method of [J] except that a transparent resin film without a printed layer was used as the film to be a surface resin layer having a thickness of 25 μm. The film was laminated by thermocompression bonding to obtain a decorative film laminating resin film.

  [L]: A resin for an adhesive resin layer, a resin for a base resin layer, and a resin for a colored resin layer kneaded with a color pigment, which are heated and melted from an extruder by coextrusion, are extruded from a T die onto a casting roll, and have a thickness of 75 μm. A three-layer laminated film was formed.

  [M]: In the film-forming method of [L], the stacking order of the base resin layer and the colored resin layer was changed, and the adhesive resin layer, the colored resin layer, and the base resin layer were heated and melted from an extruder by coextrusion. A laminated film having a thickness of 75 μm composed of layers was formed.

  [N]: A resin for an adhesive resin layer heated and melted from an extruder by co-extrusion, and a resin for a colored resin layer kneaded with a color pigment are extruded from a T die onto a casting roll to produce a two-layer laminated film having a thickness of 50 μm. Filmed. A solid printing layer is printed by a gravure rotary press on the lower surface of a film to be a base resin layer having a thickness of 30 μm separately formed, and the printing layer and the colored resin layer of the two-layer resin are overlapped, and the heating temperature of the pressure bonding roll is 120. Both films were heat-pressed and laminated under the conditions of ° C., resin film feed rate: 20 m / min, and nip pressure for pressure bonding: 2.45 MPa to obtain a resin film for decorative plate lamination.

  [O]: A colored resin layer resin kneaded with a color pigment heated and melted from an extruder was extruded from a T-die onto a casting roll to form a single layer film having a thickness of 30 μm. Separately, the base resin layer resin and the surface resin resin, which are heated and melted from an extruder by coextrusion, are extruded from a T-die onto a casting roll to form a two-layer film having a thickness of 50 μm, and the two layers are formed. Print the image printing layer and the solid printing layer on the lower surface of the base resin layer of the film with a gravure rotary press, superimpose the printed layer and the single layer colored resin film, heat the press roll at 120 ° C, and feed the resin film Both films were heat-pressed and laminated under the conditions of speed: 20 m / min and nip pressure for pressure bonding: 2.45 MPa to obtain a resin film for decorative plate lamination.

  [P]: A colored resin layer resin kneaded with a color pigment heated and melted from an extruder was extruded from a T die onto a casting roll to form a single-layer film having a thickness of 35 μm. Separately, the resin for the base resin layer heated and melted from the extruder by coextrusion is extruded from a T die onto a casting roll to form a 35 μm-thick single layer film, and a gravure ring is formed on the bottom surface of the formed base resin layer. The printing printing layer and the solid printing layer are printed by a turning machine, the printing layer and the single colored resin film are superposed, the heating temperature of the pressure bonding roll is 120 ° C., the feeding speed of the resin film is 20 m / min, and the nip pressure for pressure bonding is: Both films were laminated by thermocompression bonding under the condition of 2.45 MPa to obtain a resin film for decorative plate lamination.

  [Q]: A base resin layer resin heated and melted from an extruder by coextrusion, and a colored resin layer resin kneaded with a color pigment are extruded from a T die onto a casting roll to form a two-layer laminated film having a thickness of 60 μm. A film was formed.

  [R]: A resin for an adhesive resin layer and a resin for a base resin layer, which were heated and melted from an extruder by co-extrusion, were extruded from a T die onto a casting roll to form a two-layer laminated film having a thickness of 60 μm.

  [S]: A colored resin layer resin kneaded with a color pigment heated and melted from an extruder by co-extrusion and a base resin layer resin are extruded from a T die onto a casting roll to form a two-layer laminated film having a thickness of 60 μm. A film was formed.

  [T]: A base resin layer resin heated and melted from an extruder was extruded from a T die onto a casting roll to form a single-layer film having a thickness of 30 μm. A solid printing layer is printed by a gravure rotary press on the lower surface of a film to be a 30 μm-thick base resin layer formed separately, the printed layer and the base resin layer are superposed, and the heating temperature of the pressure bonding roll is 120 ° C., Both films were heat-pressed and laminated under the conditions of a resin film feed rate of 20 m / min and a nip pressure for pressure bonding: 2.45 MPa to obtain a resin film for laminating decorative plates.

  [U]: A resin for an adhesive resin layer heated and melted from an extruder by co-extrusion, and a resin for a colored resin layer kneaded with a color pigment are extruded from a T die onto a casting roll to produce a two-layer laminated film having a thickness of 40 μm. Filmed. Separately, a base resin layer resin heated and melted from an extruder by co-extrusion and a resin for the surface resin layer are extruded from a T-die onto a casting roll to form a two-layer laminated film having a thickness of 40 μm. A pattern printing layer was printed on the lower surface of the substrate by a gravure rotary press. Then, the former two-layer laminated film and the latter two-layer laminated film having the base resin layer subjected to the printing layer are superposed, the heating temperature of the pressure-bonding roll is 120 ° C., the resin film feed rate is 20 m / min, Nip pressure for pressure bonding: Both films were heat-pressed and laminated under the condition of 2.45 MPa to obtain a resin film for laminating decorative plates.

  [V]: A resin for an adhesive resin layer heated and melted from an extruder by coextrusion, and a resin for a colored resin layer kneaded with a color pigment are extruded from a T die onto an embossed casting roll to have an embossed recess on one side. A two-layer laminated film having a thickness of 50 μm was formed. Next, a two-component curable urethane-based colored ink is applied to the surface having the embossed recesses by a roll coating method, and then the colored ink attached to portions other than the embossed recesses is removed by wiping with a doctor blade, and then laminated. The colored ink with which the embossed recessed part currently formed in the surface of the film was solidified was solidified, and the printing resin film was created. A pattern printing layer was printed on a non-embossed surface of a film to be a 25 μm-thick surface resin layer embossed on one side separately formed by a gravure rotary press. Then, a film to be a base resin layer having a thickness of 20 μm, which is separately prepared, is sandwiched between the two-layer laminated film and a film to be a surface resin layer to which a printed layer is applied, and the heating temperature 120 of the pressure bonding roll is set. Both films were heat-pressed and laminated under the conditions of ° C., resin film feed rate: 20 m / min, and nip pressure for pressure bonding: 2.45 MPa to obtain a resin film for decorative plate lamination.

  [W]: A resin for an adhesive resin layer and a resin for a base resin layer, which are heated and melted from an extruder by coextrusion, are extruded from a T die onto an embossed casting roll, and have a thickness of 50 μm having an embossed recess on one side. A two-layer laminated film was formed. Next, a two-component curable urethane-based colored ink is applied to the surface having the embossed recesses by a roll coating method, and then the colored ink attached to portions other than the embossed recesses is removed by wiping with a doctor blade, and then laminated. The colored ink with which the embossed recessed part currently formed in the surface of the film was solidified was solidified, and the printing resin film was created. A pattern printing layer was printed on a non-embossed surface of a film to be a 25 μm-thick surface resin layer embossed on one side separately formed by a gravure rotary press. Then, a film for forming a colored resin layer obtained by kneading a separately prepared 20 μm-thick color pigment is sandwiched between the two-layered laminated film and a film to be a surface resin layer to which a printed layer is applied. The films were laminated by thermocompression bonding under the conditions of a heating temperature of 120 ° C., a resin film feed rate of 20 m / min, and a nip pressure for pressure bonding of 2.45 MPa. Next, a transparent acrylic resin was applied to the embossed surface of the film of the surface resin layer so as not to fill the embossed recesses, a gloss adjusting layer was provided, and a decorative film laminated resin film was obtained.

  Next, after applying a polyester adhesive to an electrogalvanized steel sheet having a thickness of 0.5 mm at a coating amount of 5 g / m 2, the polyester adhesive is heated to 245 ° C., the above-mentioned decorative film laminating resin film is brought into contact, and the adhesive pressure : 1.47 MPa, pressure bonding time: heat pressure bonding under conditions of 5 seconds to obtain a decorative board. Tables 1 and 2 show the values of the plane orientation coefficients after lamination when the biaxially stretched polyethylene terephthalate film is used for the surface resin layer of the decorative board thus obtained.

(Characteristic evaluation of resin film)
The decorative board created in Examples 1-24 and Comparative Examples 1-6 was evaluated about the following characteristic.
(Processability of resin film)
The quality of the processability of the decorative film laminating resin film of the present invention is determined in accordance with JIS Z 2248 (metal material bending test method) on the resin film laminated board prepared in Examples 1 to 24 and Comparative Examples 1 to 6. , 0T bending was performed, and the film surface of the bent portion was visually observed and evaluated according to the following four criteria.
(Double-circle): A crack is not recognized at all in a bending part.
○: Slight whitening is observed at the end of the bent portion.
(Triangle | delta): Whitening is recognized by the whole bending part.
X: A considerable degree of cracking is observed in the bent portion.
In the above ratings, ◎ and ○ are not problematic in use. In addition, this test was implemented about ten test pieces.

(Water degradation resistance)
Assuming that the decorative board of the present invention is aged for a long time in a hot and humid state (for example, when used as an interior material of a unit bath), the water deterioration resistance of the resin film when in contact with water for a long time is determined by DuPont. The impact test method evaluated.
The resin films for laminating decorative plates prepared in Examples 1 to 24 and Comparative Examples 1 to 6 were laminated on an electrogalvanized steel sheet having a thickness of 0.5 mm to obtain test pieces. This test piece was cut into a size of 60 mm × 60 mm, immersed in demineralized water maintained at a temperature of 38 ± 2 ° C. for 1 month, dried at room temperature, and in compliance with JIS K 5400 using a DuPont impact tester. The impact was applied under the conditions described above (impact part size 1/2 inchφ, weight 1 kg, drop height 50 cm). The state of the resin film after the impact was loaded was observed with the naked eye and evaluated in the following five stages.
(Double-circle): A crack is not recognized by the resin film.
○: Fine cracks are observed in a part of the resin film.
(Triangle | delta): A fine crack is recognized in the whole process part of a resin film.
X: A big crack is recognized by the whole process part of a resin film.
XX: The crack is remarkable in the whole resin film.
In the above ratings, ◎ and ○ are not problematic in use. In addition, this test was implemented about ten test pieces.

(Alkali resistance)
The alkali resistance of the resin film when the decorative board of the present invention was assumed to be in contact with the alkaline wrinkle removing agent for a long time was evaluated in the following manner.
The resin films for laminating decorative plates prepared in Examples 1 to 24 and Comparative Examples 1 to 6 were laminated on an electrogalvanized steel sheet having a thickness of 0.5 mm to obtain test pieces. The test piece was cut into a size of 60 mm × 60 mm, subjected to 90 ° bending, and then immersed in an aqueous solution of caustic soda having a pH of 12.5 maintained at a temperature of 38 ± 2 ° C. and then dried at room temperature. Then, the processed part was observed with a 50 × optical microscope and evaluated in the following five stages.
(Double-circle): A crack is not recognized by the resin film.
○: Fine cracks are observed in a part of the resin film.
(Triangle | delta): A fine crack is recognized in the whole process part of a resin film.
X: A big crack is recognized by the whole process part of a resin film.
XX: Cracks are recognized by the naked eye over the entire resin film.
In the above ratings, ◎ and ○ are not problematic in use. In addition, this test was implemented about ten test pieces.
The evaluation results of these resin films are shown in Tables 3 and 4.

  As shown in Tables 3 and 4, the decorative film laminating resin film of the present invention exhibits excellent characteristics in all of processability, water resistance deterioration, and alkali resistance.

  The resin film for laminating a decorative board of the present invention is configured as described above, and a decorative board obtained by laminating these resin films on a metal plate, a plywood, an inorganic board, etc. has excellent workability, water deterioration resistance, and alkali resistance. In addition, it has excellent design properties. In addition, it is excellent in environmental conservation, including unit baths that are prone to wrinkles, exterior plates for refrigerators and refrigerator doors, curtain rails, wash units, washing machines, system kitchens, partitions, wall panels, indoors The present invention can be suitably applied to doors, indoor storage, fluorescent lamp reflectors, audio visual equipment skins, oven skins, fan heater skins, stove skins, air conditioner skins, and the like.

It is sectional drawing which shows an example of the resin film for decorative board lamination of this invention. It is sectional drawing which shows another example of the resin film for decorative board lamination of this invention. It is sectional drawing which shows another example of the resin film for decorative board lamination of this invention. It is sectional drawing which shows another example of the resin film for decorative board lamination of this invention. It is sectional drawing which shows another example of the resin film for decorative board lamination of this invention. It is sectional drawing which shows another example of the resin film for decorative board lamination of this invention. It is sectional drawing which shows another example of the resin film for decorative board lamination of this invention. It is sectional drawing which shows another example of the resin film for decorative board lamination of this invention. It is sectional drawing which shows an example of the decorative board of this invention. It is sectional drawing which shows another example of the decorative board of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Resin film for decorative board lamination 2 Substrate 3 Adhesive layer 4 Base resin layer 5 Print layer 5a Pattern print layer 5b Solid print layer 6 Colored resin layer 7 Adhesive resin layer 8 Embossed recess for wiping printing 9 Wiping printing layer 10 Surface resin Layer 11 Embossed recess 12 Gloss adjustment layer 13 Decorative plate

Claims (35)

  It is composed of an adhesive resin layer, a colored resin layer, a base resin layer, a printing layer, and a surface resin layer, and the base resin layer and / or the colored resin layer is obtained by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A decorative resin laminated resin film, comprising a polyester resin having a tan δ value of 0.12 or more.   It is composed of a colored resin layer, a base resin layer, a printing layer, and a surface resin layer, and the base resin layer and / or the colored resin layer is determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating decorative sheets, characterized by comprising a polyester resin having a thickness of 0.12 or more.   It is composed of an adhesive resin layer, a base resin layer, a printing layer, and a surface resin layer, and the base resin layer has a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating a decorative board, comprising a polyester resin.   It is composed of an adhesive resin layer, a colored resin layer, a printing layer, and a base resin layer, and the base resin layer and / or the colored resin layer is determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating decorative sheets, characterized by comprising a polyester resin having a thickness of 0.12 or more.   It is composed of an adhesive resin layer, a colored resin layer, a base resin layer, and a surface resin layer, and the base resin layer and / or the colored resin layer is determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating a decorative board, comprising a polyester resin having a value of 0.12 or more.   The polyester resin is composed of a base resin layer, a printing layer, and a surface resin layer, and the base resin layer has a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating a decorative board.   It is composed of a colored resin layer, a printed layer, and a base resin layer, and the base resin layer and / or the colored resin layer has a tan δ value of 0.12 determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating decorative sheets, comprising the polyester resin as described above.   The base resin layer, the colored resin layer, and the surface resin layer are configured. The base resin layer and / or the colored resin layer has a tan δ value of 0, which is obtained by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating decorative sheets, comprising a polyester resin of 12 or more.   A polyester resin comprising an adhesive resin layer, a base resin layer, and a surface resin layer, and the base resin layer has a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device A resin film for laminating a decorative board, comprising:   It is composed of an adhesive resin layer, a base resin layer, and a colored resin layer, and the base resin layer and / or the colored resin layer has a value of tan δ determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device of 0. A resin film for laminating decorative sheets, comprising a polyester resin of 12 or more.   It is composed of a base resin layer and a surface resin layer, and the base resin layer is made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating decorative sheets.   It is composed of a base resin layer and a colored resin layer, and the base resin layer and / or the colored resin layer has a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating decorative sheets, comprising a polyester resin.   It is composed of an adhesive resin layer and a base resin layer, and the base resin layer is made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device. A resin film for laminating decorative sheets.   A resin film for laminating a decorative board comprising a single-layer base resin layer made of a polyester resin having a tan δ value of 0.12 or more determined by dynamic viscoelasticity measurement using a solid viscoelasticity measuring device.   The resin film for decorative board lamination according to claim 1, wherein the polyester resin is polybutylene terephthalate.   The resin film for decorative board lamination according to claim 1, wherein the polyester resin is a modified polybutylene terephthalate obtained by substituting a part of the acid component of polybutylene terephthalate with isophthalic acid.   The resin film for decorative board lamination according to claim 1, wherein the polyester resin is polytrimethylene terephthalate.   The resin film for decorative board lamination in any one of Claims 1-6, 8, 9, and 11 in which the said surface resin layer consists of polyester resins.   19. The resin film for decorative board lamination according to claim 18, wherein the polyester resin is biaxially stretched polyethylene terephthalate.   The resin film for lamination | stacking of a decorative board of Claim 18 whose said polyester resin is a polybutylene terephthalate.   The resin film for laminating laminates according to claim 18, wherein the polyester resin is a modified polybutylene terephthalate obtained by substituting a part of the acid component of polybutylene terephthalate with isophthalic acid.   The resin film for decorative board lamination | stacking in any one of Claim 1, 3-5, 9, 10, 13 whose said adhesive resin layer consists of polyester resins.   The resin film for laminating decorative sheets according to claim 22, wherein the polyester resin is a modified polyethylene terephthalate obtained by substituting a part of the acid component of polyethylene terephthalate with isophthalic acid.   The resin film for laminating decorative sheets according to claim 22, wherein the polyester resin is a modified polybutylene terephthalate obtained by substituting a part of the acid component of polybutylene terephthalate with isophthalic acid.   The decorative film laminating resin film according to any one of claims 1, 2, 4, 5, 7, 8, 10, and 12, wherein the colored resin layer comprises a polyester resin kneaded with a color pigment.   The resin film for decorative board lamination according to claim 25, wherein the polyester resin is polybutylene terephthalate.   26. The resin film for decorative laminates according to claim 25, wherein the polyester resin is a modified polybutylene terephthalate obtained by substituting a part of the acid component of polybutylene terephthalate with isophthalic acid.   The resin film for laminating decorative plates according to claim 23, wherein the modified polyethylene terephthalate resin has an acid component of isophthalic acid and a copolymerization ratio of 15 mol% or less.   The decorative polybutylene terephthalate resin according to any one of claims 16, 21, 24, and 27, wherein the acid component is isophthalic acid and the copolymerization ratio thereof is 3 to 20 mol%.   The decorative board which laminated | stacked the resin film for decorative board lamination | stacking in any one of Claims 1-29 on the at least single side | surface of the board | substrate which laminates | stacks a resin film.   The decorative board according to claim 30, wherein the decorative board is laminated between the substrate and the resin film for laminating the decorative board via an adhesive layer.   The surface resin layer of the resin film for decorative board lamination is biaxially stretched polyethylene terephthalate, and the surface orientation coefficient of the surface resin layer after being laminated on the substrate is 0.040 to 0.175. The decorative board as described.   The decorative board according to claim 32, wherein the surface resin layer has a plane orientation coefficient of 0.160 to 0.175.   The decorative board according to any one of claims 30 to 33, wherein the substrate is a metal plate.   A unit bath comprising the decorative board according to any one of claims 30 to 34.

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