WO2000050242A1

WO2000050242A1 - Printed resin film for highly weatherized decorative sheet lamination, highly weatherized decorative sheet laminated with the resin film and storeroom

Info

Publication number: WO2000050242A1
Application number: PCT/JP2000/001122
Authority: WO
Inventors: Hiroyuki Iwashita; Tetsuo Nakamoto; Koji Taguma; Yoshiyuki Sugimoto; Yoshiki Takesue; Koji Fujii
Original assignee: Toyo Kohan Co., Ltd.
Priority date: 1999-02-26
Filing date: 2000-02-25
Publication date: 2000-08-31
Also published as: JP3839258B2; JP2000246833A; MY136381A; AU2694000A; TW555648B

Abstract

A printed resin film for highly weatherized decorative sheet lamination having patterns equally or more excellent in designing features to/than conventional highly weatherized decorative sheets using polyvinyl chloride resin film and being excellent in such surface properties as weatherability, contamination resistance and solvent resistance, and a highly weatherized decorative sheet laminated with the resin film. The printed resin film for highly weatherized decorative sheet lamination is made by sequentially laminating, starting at the lowest, an adhesive resin layer of copolymer polyester film, a coloring resin layer of polybutylene terephthalate, a base material resin layer as a printing base, a pattern printed layer or pattern printed layer and solid printed layer, and a surface resin layer of transparent acrylic resin; and this film is bonded to a substrate such as a wooden sheet, metal sheet and inorganic board to form a decorative sheet.

Description

Fine Printed resin film for laminate of high weather resistant decorative board, high weather resistant decorative board and storage room laminated with the resin film

The present invention relates to a printed resin film for laminate of a high weather resistant decorative board and a high weather resistant decorative board obtained by laminating the resin film, and more particularly, to an exterior of a building such as a storeroom or a car boat roof, and particularly to an automobile and the like. Lamination suitable for applications requiring high weather resistance

(10) Resin film for use, high weather resistant decorative board laminated with the resin film, and storage

Background art

Conventionally, high weather resistant decorative boards used for exterior materials of buildings such as various storages and carports

(1) Colored zinc-coated steel sheet coated with organic paint on molten zinc-coated steel sheet

(2) After printing on the polyvinyl chloride resin film using the usual method, the cosmetic film, which is a laminate of the polyvinyl chloride resin film and the biaxially stretched polyester resin film, is coated with zinc through an adhesive. Substrates such as steel plate, plywood, or MDF

> 0 stacked

(3) After printing on the resin layer as the base material, apply a decorative film laminated with an acrylic resin film via an adhesive layer to a zinc-plated steel plate, plywood, or MDF etc. substrate via an adhesive. Stacked on

Etc. are known.

However, the colored zinc-plated steel sheet of (1) above causes abnormalities on the painted surface in 3 to 6 years for outdoor use, causing peeling of the paint film and blistering. Repainting is necessary because the corrosion of the plating layer may progress.

The decorative board laminated with the decorative film of (2) is made of a polyvinyl chloride resin film, so its surface properties such as stain resistance and solvent resistance are inferior. Poisonous gases such as hydrogen gas and harmful substances resulting therefrom are harmful to the environment and may cause damage to incinerators during incineration. The acrylic resin film laminate of (3) is known to have excellent durability against ultraviolet rays and heat due to sunlight, but the corrosion resistance of scratches generated during processing and construction is inferior, and Peeling and blistering may occur, leading to corrosion and deterioration of the underlying base material layer.

10 was not always satisfactory.

The present invention aims to solve the above-mentioned problems, and has a design pattern excellent in design property equal to or higher than that of a highly weather-resistant decorative sheet using a conventional polyvinyl chloride resin film, and has weather resistance and stain resistance. To provide a printing resin film for laminating a high weather resistant decorative board excellent in surface physical properties such as solvent resistance and a high weather resistant decorative board laminated with the resin film.

| if Disclosure of the invention

The printing resin film for laminate of a highly weather-resistant decorative board of the present invention is characterized in that an adhesive resin layer, a base resin layer, a base printing layer, a picture printing layer, and a surface resin layer are sequentially laminated from the bottom. I do.

The printing resin film for laminating a high weather resistant decorative board according to the present invention is characterized in that an adhesive resin layer, a colored resin layer, a picture printing layer, a base resin layer, and a surface resin layer are sequentially laminated from the bottom. .

The printed resin film for laminating a highly weather-resistant decorative board of the present invention has a structure in which an adhesive resin layer, a colored resin layer _if , a base printing layer, a picture printing layer, a base resin layer, and a surface resin layer are sequentially laminated from the bottom. It is characterized by the following. The printed resin film for laminating a high weather resistant decorative board of the present invention has a printing layer in which the base resin layer is subjected to an embossing process, and an embossed recess formed by the embossing process is filled with an ink. Features.

Further, the surface of the surface resin layer has an embossed concave portion formed by embossing.

Further, in the printed resin film for laminating a highly weather-resistant decorative plate according to the present invention, the surface resin layer is made of an acrylic resin film, a polyester resin film, a polycarbonate film, or a polyvinylate film.

Further, the base resin layer is made of polybutylene terephthalate resin.

10

Further, the highly weather-resistant decorative board of the present invention is characterized in that the above-mentioned printing resin film for laminating a highly weather-resistant decorative board is laminated on at least one side of a substrate on which the resin film is laminated.

The highly weather-resistant decorative board of the present invention is characterized in that it is laminated between the substrate and the printing resin film for laminating the highly weather-resistant decorative board via an adhesive layer.

In the highly weather-resistant decorative plate of the present invention, the substrate is a metal plate, a wooden plate, or a board.

The storeroom of the present invention is characterized by being formed using the above-mentioned highly weather-resistant decorative board having a metal plate as a substrate. BRIEF DESCRIPTION OF THE FIGURES

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

The inventor of the present invention has proposed a high weather resistance 1) picture pattern having excellent weatherability and design properties, which is a substitute for a polyvinyl chloride resin film, which may generate toxic gas and harmful substances due to incineration and contaminate the environment. As a result of intensive studies on a printable high weather resistant resin film for laminates that has excellent surface properties such as stain resistance and solvent resistance, it has been found that a copolyester resin film is used as the adhesive resin layer. A polybutylene terephthalate resin film is used as a colored resin layer to be selectively laminated and a base resin layer as a printing base, and a pattern printing layer or a pattern printing layer and a base printing layer are used.

It has been found that a resin film laminated on a decorative board satisfying the above-mentioned required characteristics can be obtained by sequentially forming an acrylic resin film or the like as a surface resin layer from the bottom after forming No.10. After the embossed portion is formed on the base resin layer to form an embossed concave portion, a wiping method may be used to provide a wiping printing layer in which the embossed concave portion is filled with ink.

| f In addition, we found that a high weather-resistant decorative board made by laminating the above resin film on a metal plate, plywood, board, etc. has excellent design properties in addition to the above excellent film properties of the resin film. .

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

FIG. 1 is a cross-sectional view showing an example of a printing resin film for laminate of a highly weather-resistant decorative sheet according to the present invention. FIG. 2 and FIG. 3 show another example of a printing resin film for laminate of a high weather-resistant decorative sheet of the present invention. FIG. 4 and FIG. 5 are sectional views showing examples of the highly weather-resistant decorative plate of the present invention. 1 is a printing resin film for laminating a high weather resistant decorative board, 2 is a substrate, 3 is an adhesive layer, 4 is an adhesive resin layer, 5 is a colored resin layer, 6 a is a picture printing layer, and 6 b is a printing layer. , 7 is the base resin layer, 8 is the embossed recess for wiping printing, 9 is the wiping printed layer, 10 is the adhesive; tf agent layer, 11 is the surface resin layer, 12 is the embossed recess, 13 is the high weather resistance Each of the decorative veneers; As shown in FIG. 1, the printed resin film 1 for laminated high weather resistance decorative board of the present invention has a base resin layer 7 laminated on an upper surface of an adhesive resin layer 4, and an upper surface of the base resin layer 7, A surface resin layer 11 having a pattern printing layer 6a and a printing layer 6b provided on the entire back surface is laminated on the entire back surface.

if In addition, the highly weather-resistant decorative resin laminate printing resin film 1 of the present invention is formed by laminating a colored resin layer 5 provided with a picture printing layer 6 a on the upper surface of an adhesive resin layer 4 as shown in FIG. A base resin layer 7 provided with a wiping print layer 9 filled with wiving ink is further laminated in an embossed concave portion 8 formed on the upper surface by embossing, and an upper surface of the base resin layer 7 is provided. A surface resin layer 1 1 | 0 may be laminated on the substrate 1 via an adhesive layer 10.

Further, as shown in FIG. 3, the printing resin film 1 for laminated high weather resistance decorative board of the present invention is composed of the colored resin layer 5 of the printing resin film 1 for laminated high weather resistance decorative board 1 of FIG. Both a and the printing layer 6 b may be provided, and an embossed concave portion 12 may be provided on the surface of the surface resin layer 11.

jj, "FIG. 4 shows a high weather resistant decorative board 13 in which the printing resin film 1 for laminating a high weather resistant decorative board shown in FIG. 2 is laminated on the substrate 2 via an adhesive layer 3.

FIG. 5 shows a highly weather-resistant decorative board 13 in which the printing resin film 1 for laminating a highly weather-resistant decorative board shown in FIG. 3 is laminated on a substrate 2 via an adhesive layer 3.

As the resin of the base resin layer 7 and the colored resin layer 5 of the present invention, a resin of 1.0 to 2.0 is used.

> o It is preferable to use a polybutylene terephthalate resin film having a viscosity (IV value), but the intrinsic viscosity is 1.5 or less from the viewpoint of film-forming properties, and the intrinsic viscosity is 1.5 from the viewpoint of water aging resistance (water deterioration resistance). More preferably, it is 2 or more. 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 a film using an extruder.

) The pattern printing layer 6a is a printing layer expressing patterns such as wood grain, stone grain, natural leather surface pattern, cloth grain, abstract pattern, etc., and the solid printing layer 6b covers the entire surface of the base resin layer 7. hiding It is a printing layer that gives the printing base color of the picture printing layer 6a, and also a layer that gives thermal adhesion between the base resin layer 7 and the surface resin layer 11. As the vehicle of the ink forming the printing layers 6a and 6b, known materials such as cellulose derivatives such as nitrocellulose and cellulose acetate, and polyester urethane resins can be used. From the viewpoint, nitrocellulose-alkyd resin ink is preferable.

When the embossed recess 8 is formed by selectively embossing the base resin layer 7 and then the wiping print layer 9 in which the embossed recess 8 is filled with ink by using a wiping method is provided, the embossed recess is formed. As the wiping ink to be filled in 8, paint or ink is used.

For example, a synthetic resin such as a natural resin or a denatured resin thereof, a cellulose derivative, a polyester resin, an acrylic resin, a polyurethane resin, or the like is used as a constituent material of the vehicle, and a coloring pigment, an extender pigment, or the like is added to the vehicle. Paint or ink is used. As the vehicle to be used, a urethane two-component curing type is preferably used. As the wiping method, any of the conventionally used wiping methods such as the Doc Yuichi blade method and the roll coating method may be used.

As the surface resin layer 11, it is preferable to use an acrylic resin film, a polyester resin film, a polycarbonate film, a polyarylate film, and the like, and it is more preferable to use an acrylic resin film. These resins are characterized in that the films do not contain a plasticizer and a halogen element.

As the resin of the adhesive resin layer 4, it is preferable to use a copolymerized polyester resin.

As an example of a material constituting the polyester resin, a copolymerized polyester resin having the following composition is preferably used. That is, as a soft segment forming a resin, boroxyalkylene glycol such as polyethylene glycol and polytetramethylene glycol, or ε-force prolactone, a Zerain acid, sebacic acid, dodecanedioic acid, HOOC-, such as dimer acid [CH _2]. An aliphatic polyester comprising an aliphatic dicarboxylic acid having a molecular structure of one COOH and an aliphatic or Z or alicyclic diol is preferably used.

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

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 forming the copolymerized polyester. It is preferably from 0 mol% to 65 mol%.

When stronger adhesion to the substrate is required, an ionomer resin component may be contained in a part of the resin component of the adhesive resin layer 4. In this case, Ionoma resin

It is preferable that the It content be 1 to 50% by weight of the whole resin component.

Then, the printed resin film 1 for laminating a highly weather-resistant decorative plate of the present invention shown in FIG. 1 can be prepared as follows. That is, the pattern printing layer 6a and the base printing layer 6b provided on the lower surface of the surface resin layer 11 on the upper surface of the laminated film of the adhesive resin layer 4 and the base resin layer 7 formed as a two-layer film by co-extrusion. Printing layers consisting of

> 0 The co-extruded laminated film of the adhesive resin layer 4 and the base resin layer 7 and the surface resin layer 11 are stacked and passed between a pair of heat rolls, sandwiched, pressed and thermally fused to laminate. Then, one laminated film is manufactured. By applying pressure while heating, the surface of the surface resin layer 1 1 and the surface of the printing layer 6 b are fused to the base resin layer 7 to produce a single highly weather-resistant decorative laminate printing resin film 1. Things.

^ Further, the adhesive resin layer 4 and the colored resin layer 5 kneaded with a pigment are co-extruded to form a two-layer film, and a picture print 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 then heat-sealed and laminated to produce one laminated film. In this case, by using an embossing roll as the heat roll, lamination and embossing can be performed at the same time, and an embossed concave portion 8 for wiving printing is formed on the surface of the base resin layer 7, By providing the wiping print layer 9 by filling with a wiping ink, it is possible to impart a highly designed picture pattern. Further, by laminating the surface resin layer 11 thereon with the adhesive layer 10 interposed therebetween, it is possible to obtain the printed resin film 1 for laminated high weather resistance decorative board shown in FIG. In addition, 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 by j _{0, and} to achieve high designability in which the printed pattern and the embossed pattern are synchronized. Embossed decorative film. The above-described steps such as laminating and embossing can be performed under the same conditions as in 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 mark II) a printing layer 6a thereon, as shown in FIG. It is also possible to obtain a printed resin film 1 for decorative laminate lamination with further improved properties. In addition, by bonding the printed resin film 1 for laminate of high weather resistance obtained by the above method to the substrate 2 with the adhesive layer 3 interposed therebetween, the high weather resistance as shown in FIG. 4 or FIG. The decorative board 13 is obtained. As the substrate 2, for example, wood veneer, wood plywood, particle board, wood board such as MDF, steel plate, aluminum alloy plate, metal plate such as zinc plated steel plate coated with zinc or zinc alloy, or gypsum board, silicate Inorganic boards such as calcium board and asbestos slate board are used.

As the adhesive for the adhesive layer 3 used for laminating the printed resin film 1 for laminate of the high weather resistant decorative board and the substrate 2, a general adhesive, for example, vinyl acetate resin, ethylene- Emarjo such as vinyl acetate resin, urea resin and urethane resin Adhesives are preferred because they are safe against fire, have no odor, and are inexpensive.

Example

Next, the present invention will be described in more detail by way of examples.

If (Example 1)

On one side of a commercially available 60-m-thick transparent acrylic resin film, nitrocellulose mono-alkyd ink (manufactured by Showa Ink, SAM) is used to print a pattern printing layer and a color printing layer in-line using a gravure rotary press. Using commercially available polybutylene terephthalate resin and copolymerized polyethylene terephthalate resin.

Two layers of unstretched film (thickness ratio = 4: 1) with a thickness of 70 / im prepared by an extrusion film forming machine were stacked on top of each other. Feeding speed: 2 Om / min, nip pressure of press roll: 15 kgf / cm ² Both films were heat-pressed and laminated to produce a printed resin film for high weather resistant decorative laminate lamination. . Next, apply a polyester-based adhesive to a 0.5 mm thick steel sheet

Apply the coating amount of ^ / m ² , and heat the above-mentioned printing resin film for laminating high weather resistant decorative board. Temperature: 210 ° Bonding pressure: 15 kgf Zcm ² , Heating time: 5 seconds Thus, a highly weather-resistant decorative board was obtained.

(Example 2)

A commercially available polybutyrene terephthalate resin mixed with 20% by weight of cream pigment and a copolymerized poly (ethylene terephthalate) resin having a thickness ratio of 4: 1 prepared by an extrusion film forming machine. On one surface of a two-layer unstretched film of 0 m, a nitrocellulose-alkyd ink (SAM, Ink, SAM) was used to print a picture printing layer in-line with a gravure rotary press. An unstretched film having a thickness of 70 m, formed by extruding a turret resin with an extrusion film forming machine, was opposed to the film, and the transparent polybutyrene terephthalate was prepared under the same conditions as in the laminating conditions by heat compression in Example 1. Embossing roll and silicone rubber with single layer film surface as embossing roll side A three-layer film having an embossed concave portion on the surface of the transparent polybutyrene terephthalate film was formed by being passed through a press roll made of rolls and pressed. Then, a two-component curable urethane-based coloring ink (manufactured by Showa Ink, PW-001) is applied to the surface having the embossed concave portions by a roll coating method, and then a doctor blade (a blade is applied to portions other than the embossed concave portions). The adhering colored ink was removed, the colored ink was filled into the embossed concave portions formed on the surface of the laminated film, and solidified to prepare a printing resin film. To

The epoxy-phenol-based adhesive was applied on one side, and the adhesive-applied surface of a 60-m-thick transparent acrylic resin film was opposed to each other. A highly weather-resistant decorative film with excellent design properties was produced by being passed through a press roll made of a rubber roll and pressed. Then, a polyurethane-based adhesive was coated at a coverage of 5 0 g / m ² wood plywood thickness 6 mm, before SL highly weather resistant decorative plate laminated printing resin film heating temperature: 1 6 0 ° C , Bonding pressure: 12 kgf / cm ² , Bonding time: 15 seconds Heat-press bonding was performed to obtain a highly weather-resistant decorative board.

(Example 3)

On one surface of a two-layer unstretched film of the same polybutylene terephthalate resin and copolymerized polyethylene terephthalate resin as in Example 2, a colored printing layer was provided directly on the polybutylene terephthalate resin, and pattern printing was performed thereon. Printing was performed under the same conditions as in Example 2 except that a layer was provided. Further, in exactly the same manner as in Example 2, the two-layer unstretched film and the polybutylene terephthalate film were laminated and embossed, followed by wiping printing to form a transparent acrylic resin film having a thickness of 60 xm. Lamination was performed with an adhesive in between to create a highly weather-resistant decorative film with excellent design properties. Next, a urethane-based adhesive was applied to an 8 mm-thick gypsum board with an application amount of 80 gZm ² ^. pressure: 1 0 kgf / cm ^2, bonding time: 2 0 second on the conditions, a transparent acrylic resin The film was passed through a press roll composed of an emboss roll and a silicone rubber roll with the film surface facing the emboss roll, and heated and pressed to obtain a three-dimensionally highly weatherable decorative board having an embossed concave portion formed on the surface.

(Example 4)

i Except for using a commercially available 60 xm thick transparent polyethylene terephthalate film in place of the 60 thickness transparent acrylic resin film of Example 1 I got

(Example 5)

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 0, and a 60 / xm-thick transparent polycarbonate film (manufactured by Teijin) The adhesive-coated surface of (1) was opposed to and pressed under the same conditions as the lamination conditions by the heat-press bonding in Example 1 to produce a high-definition decorative film with excellent design properties. Next, the printed resin film for laminating a high-definition decorative board was heat-pressed to a 6-mm-thick wood plywood in the same manner as in Example 2 to obtain a high-definition decorative i-plate.

(Example 6)

After a printing 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 printing resin film, and a 60-m-thick transparent polyaryret film adhesive was applied. The surfaces were opposed to each other, and pressure bonding was performed under the same conditions as the lamination conditions by heating and pressure bonding of Example 3, thereby producing a high-definition decorative film having excellent design properties. Subsequently, the printing resin film for laminating a high-definition decorative board was heated and pressed on a gypsum board having a thickness of 8 mm in the same manner as in Example 3 to obtain a high-definition decorative board.

(Characteristic evaluation of resin film)

The highly weather-resistant decorative sheets prepared in Examples 1, 2, 3, 4, 5, and 6 were evaluated for the following properties> (

(Weatherability) For the evaluation of the outdoor weather resistance, a cross cut reaching the substrate was applied to the film of the laminate with a razor blade, and a sunshine weather test (JISA 1415) was conducted for 800 hours.

The occurrence of abnormalities such as cracks and discoloration of the film and the occurrence of blisters were visually evaluated, and evaluated according to the following criteria.

A: No discoloration, cracks, or blisters are observed.

〇: Very slight blisters are observed in the cross-cut section, which is practically acceptable.

Δ: Discoloration, cracks, and _ί0 blisters were observed in the cross cut portion to a degree that would cause a practical problem.

X: Discoloration, cracks and blisters are generated to a considerable extent on the entire surface.

Is recognized.

The cross-cut sample was subjected to a salt spray test (JIS 32371) over a period of 800 hours after the sunshine weather test for 300 hours. Was evaluated for the peel width.

As a result, all of the decorative boards of Examples 1 to 6 had a peel width of 1 mm or less, and exhibited excellent corrosion resistance.

(Embossability)

Embossing for wiping printing of the printed resin film for laminate of a highly weather-resistant decorative board of the present invention ^ Good workability is determined by the surface roughness 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 11/2 m is visually observed. The quality of embossability was evaluated based on the following three criteria.

^ 〇: good, △: slightly bad, X: bad

The above evaluation criteria are based on the surface roughness of the polyvinyl chloride resin film (R a: m) was measured using a SURFCOM surface roughness meter manufactured by Tokyo Seimitsu Co., Ltd. in accordance with JISB 0601, and when the average surface roughness was 4 / im, If the appearance of the surface of the polyvinyl chloride resin film with a surface roughness of 4 ^ m is equal to or better than that of the surface of the polyvinyl chloride resin film, it is regarded as good (〇). The sample having the embossing was judged as poor (△), and the one without embossing was judged as defective (X).

(Stain resistance)

After drawing with black oil-based magic ink on the resin film surface of the outermost layer of the highly weather-resistant decorative board prepared in Examples 1, 2, 3, 4, 5 and 6, and leaving it for 24 hours, etano | Was wiped off with a cloth impregnated with, and the degree of magic ink remaining on the resin film surface was visually observed and evaluated according to the following criteria.

A: No magic ink is observed.

〇: Very small amount of magic ink remaining to the extent that there is no practical problem is observed.

| Γ Δ: A slight amount of magic ink remained, which was a problem in practical use.

X: Remaining magic ink is recognized to a considerable extent.

(Solvent resistance)

Resin of the outermost layer of the high weather resistant decorative board prepared in Examples 1, 2, 3, 4, 5, and 6> ί A sponge impregnated with methyl ethyl ketone was placed on the film surface and left for 24 hours. The degree of discoloration and swelling of 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 is observed to the extent that there is no practical problem.

Δ: Slight discoloration or swelling to a degree that would cause a practical problem was observed '

X: Discoloration and swelling are recognized to a considerable extent.

(Water resistance)

Assuming that the highly weather-resistant decorative sheet of the present invention was allowed to age for a long time in a high-temperature and high-humidity state, the water resistance of the resin film when exposed to water for a long time was evaluated by the DuPont impact test method.

The printed resin film for laminating a highly weather-resistant decorative sheet prepared in Examples 1, 2, 3, 4, 5, and 6 was laminated on a 0.5 mm-thick zinc-plated steel sheet to obtain a test piece. The test piece was cut into a size of 6 O mm X 60 mm, immersed in demineralized water maintained at a temperature of 38 ± 2 ° C for 1 month, dried at room temperature, and then subjected to a Dupont impact tester. An impact was applied under the conditions (size of impact part ΐ 2 ΖκΛ Φ, weight lkg, drop height 5 Ocm) according to JISK540. The state of the resin film after applying the impact was visually observed and evaluated according to the following five levels.

：: No crack was observed in the resin film.

|) Δ: Fine cracks are observed in the entire embossed portion of the resin film.

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

X X: 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. The property evaluation of these resin films is shown below.

> 0 weather resistance Example 5 ◎ 〇〇 ◎ 〇 Example 6 ◎ 〇〇 ◎ ◎ As described above, the printed resin film for decorative laminate of the present invention exhibits excellent properties in all of weather resistance, enbossability, stain resistance, solvent resistance, and water deterioration. Industrial applicability

The printed resin film for laminating a highly weather-resistant decorative sheet of the present invention is configured as described above. Since the surface resin layer made of the acryl resin film has excellent durability against ultraviolet rays and heat of sunlight, it can be used outdoors. A laminated resin film applicable to weathering applications can be obtained. In addition, as a printing film, since the base resin layer and the colored resin layer made of the polybutyrene terephthalate film jC have little fluctuation in expansion and contraction due to heat and tension, and have excellent dimensional stability, the printing register is good. It will be accurate.

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

Furthermore, 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 there is no contamination resistance, solvent resistance, In addition to being excellent in surface properties such as water resistance, there is no generation of toxic gas such as hydrogen chloride gas when incinerated and disposed of, so there is no need to worry about polluting the environment.

Claims

The scope of the claims

I. A printing resin film for laminating a high weather resistant decorative board, in which an adhesive resin layer, a base resin layer, a base printing layer, a picture printing layer, and a surface resin layer are sequentially laminated from the bottom.

if 2. Adhesive resin layer, colored resin layer, pattern printing layer, base resin layer, surface resin layer are laminated in this order from the bottom.

3. A printing resin film for laminating a high weather resistant decorative board in which an adhesive resin layer, a colored resin layer, a base printing layer, a picture printing layer, a base resin layer, and a surface resin layer are sequentially laminated from the bottom.

4. The highly weather-resistant decorative board according to claim 2, wherein the base resin layer is embossed, and a printed layer is formed by filling the embossed recesses formed by the embossing with ink. Printing resin film for lamination.

5. The printing resin film for laminate of a highly weather-resistant decorative board according to any one of claims 1 to 4, wherein the surface of the surface resin layer has an embossed concave portion formed by embossing.

6. The printing resin film according to any one of claims 1 to 5, wherein the surface resin layer is made of an acrylic resin film.

7. The printing resin film according to any one of claims 1 to 5, wherein the surface resin layer is made of a polyester resin film.

8. The printing resin film according to any one of claims 1 to 5, wherein the surface resin layer is formed of a polycarbonate film.

^ 9. The printing resin film according to any one of claims 1 to 5, wherein the surface resin layer is made of a polyarylate film.

10. The printing resin film for laminating a highly weather-resistant decorative plate according to any one of claims 1 to 4, wherein the base resin layer is made of a polybutyrene terephthalate resin.

II. A highly weather-resistant decorative board in which the printed resin film for laminating a highly weather-resistant decorative sheet according to any one of claims 1 to 10 is laminated on at least one surface of a substrate on which the resin film is laminated.

12. The highly weather-resistant decorative sheet according to claim 11, wherein the decorative sheet is laminated between the substrate and the printed resin film for laminating a highly weather-resistant decorative sheet via an adhesive layer.

13. The highly weather-resistant decorative plate according to claim 11 or 12, wherein the substrate is a metal plate.

^ 14. The highly weather-resistant decorative board according to claim 11 or 12, wherein the substrate is a wooden board.

15. The highly weather-resistant decorative board according to claim 11 or 12, wherein the substrate is a board.

16. A storage room formed using the highly weather-resistant decorative plate according to claim 13.