JP2022017299A - Decorative board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative board which has quasi-noncombustibility and is excellent in designability.

SOLUTION: A decorative board includes a base material board 2, and a decorative sheet 4 stuck to one surface 2a side of the base material board 2. The base material board 2 is composed of a noncombustible material according to Construction Ministry's notification No. 1400 in 2000 or a quasi-noncombustible material according to Construction Ministry's notification No. 1401 in 2000, and the decorative sheet 4 is composed of a quasi-noncombustible according to Construction Ministry's notification No. 1401 in 2000. An organic mass contained in the decorative sheet 4 is 260 g/m² or less. An adhesive 3 used in sticking is an adhesive so that a ratio of a starch paste to a synthetic resin emulsion is 100:0 to 80:20.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a decorative board.

Conventionally, a decorative board made by laminating a sheet of a resin composition to a gypsum board has been proposed (see, for example, Patent Document 1). Such decorative boards include, for example, special buildings such as apartment houses, hotels, and hospitals (Building Standards Law, Article 6, Article 27, Article 28, Article 35-Article 35-3, Article 90). There is a semi-incombustible one that is fireproof and can be used in 3).

Jitsufuku No. 6-6916

However, such decorative boards are poorly designed and are usually used for hidden parts such as the inner wall of a closet, but they are rarely used for living rooms, corridors, entrance walls, and ceilings. The current situation.
The present invention focuses on the above points, and an object of the present invention is to provide a decorative board having semi-incombustibility and excellent design.

In order to solve the above problems, one embodiment of the present invention is attached to one surface side of (a) a base material board and (b) a base material board, and is a base material of a foamed resin layer and a foamed resin layer. It is provided with a decorative sheet having a pattern layer formed on the opposite surface side of the board, and (c) the base material board is a non-combustible material specified in the 2000 Ministry of Construction Notification No. 1400, or 2000. The semi-incombustible material specified in the Ministry of Construction Notification No. 1401 of the year, (d) the decorative sheet is the semi-incombustible material specified in the Ministry of Construction Notification No. 1401 of 2000, and (e) the foamed resin layer. The organic mass contained is 260 g / m ² or less, and (f) the adhesive used for pasting is an adhesive having a ratio of starch paste to a synthetic resin emulsion of 100: 0 to 80:20. Yes, (g) The gist is that the amount of the adhesive applied is a decorative board having a solid content of 60 g / m ² or less.

According to one aspect of the present invention, the base board has non-combustible performance, the organic mass of the decorative sheet is limited to an appropriate range, and the blending ratio and the coating amount of the adhesive are adjusted to an appropriate range. It can be made semi-incombustible so that it can be used for special buildings such as condominiums and hotels. In addition, since the decorative sheet is attached, the design can be improved. Therefore, it is possible to provide a decorative board having semi-incombustibility and excellent design.

It is sectional drawing which shows the decorative board which concerns on embodiment of this invention.

Next, an embodiment of the present invention will be described with reference to the drawings.
Here, the drawings are schematic, and the relationship between the thickness and the plane dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Further, the embodiments shown below exemplify a configuration for embodying the technical idea of the present invention, and the technical idea of the present invention describes the materials, shapes, structures, etc. of the constituent parts as follows. It is not specific to the thing. The technical idea of the present invention may be modified in various ways within the technical scope specified by the claims described in the claims.

(Cosmetic board)
As shown in FIG. 1, the decorative board 1 of the present embodiment is formed by attaching a decorative sheet 4 to one surface 2a side of the base board 2 via an adhesive 3. The decorative board 1 of this embodiment complies with ISO5660-1 and is subjected to a heating test based on the provisions of Article 1, Item 5 (quasi-incombustible material) of the Building Standard Law Construction Example (Cabinet Order No. 338 of 1950) (1). ) The total calorific value for 10 minutes after the start of heating is 8 MJ / m ² or less. (2) There are no cracks or holes penetrating to the back surface, which is harmful for fire protection, for 10 minutes after the start of heating. It is semi-incombustible and satisfies the condition that the heat generation rate does not exceed 200 kW / m ² continuously for 10 seconds or more.

(Base board)
As the base material board 2, a non-combustible material specified in the Ministry of Construction Notification No. 1400 of 2000 or a quasi-non-combustible material specified in the Notification No. 1401 of the Ministry of Construction in 2000 is used. For example, gypsum board, cement board mixed with glass fiber, calcium silicate board mixed with fiber, rock wool board, and glass wool board can be adopted. Further, the base material board 2 may be provided with various functions such as sound absorption performance, moisture absorption / desorption performance, and formaldehyde absorption / decomposition performance. Further, as the thickness of the base material board 2, for example, 9 mm to 15 mm can be adopted.

(glue)
As the adhesive 3, a starch glue alone or a mixture of starch glue and a synthetic resin emulsion is used. As the synthetic resin emulsion, for example, vinyl acetate resin emulsion, ethylene vinyl acetate resin, and acrylic resin emulsion can be adopted. The ratio of starch paste to synthetic resin emulsion is 100: 0 to 80:20 from the viewpoint of nonflammable performance. When the ratio of the synthetic resin emulsion is larger than 80:20, the organic mass increases and the nonflammable performance decreases. In addition, 100: 0 is the case which consists of starch glue alone. The ratio of starch paste to the synthetic resin emulsion is preferably 95: 5 to 80:20 in consideration of adhesion. When the ratio of the synthetic resin emulsion is smaller than 95: 5, the adhesion between the base board 2 and the decorative sheet 4 is lowered, and the edges of the decorative sheet 4 are lifted.

The amount of the adhesive 3 applied is 60 g / m ² or less in terms of solid content from the viewpoint of non-combustible performance. If it is larger than 60 g / m ² , the organic mass increases and the non-combustible performance decreases. Further, the coating amount of the adhesive 3 is preferably 20 g / m ² or more and 60 g / m ² or less in terms of solid content in consideration of adhesion. If it is less than 20 g / m ² , the adhesion between the base board 2 and the decorative sheet 4 is lowered, and the end portion of the decorative sheet 4 is lifted. In addition, the adhesive 3 has passed the quality standard of JIS A 6922 (1), has the JIS mark displayed, or has the same quality, and has received the ministerial approval that the amount of formaldehyde emission is not subject to regulation. Furthermore, it is preferable to use the product (2) registered with the Japanese Industrial Standards Association, which has been confirmed to have heat generation.

(Cosmetic sheet)
As the decorative sheet 4, a semi-incombustible material specified in Notification No. 1401 of the Ministry of Construction in 2000 is used. As the decorative sheet 4, for example, a foamed wallpaper having a foamed resin layer 6 and a pattern layer 7 formed on the surface 6a side opposite to the base board 2 of the foamed resin layer 6 can be adopted. The foamed resin layer 6 is formed by subjecting a layer of a resin composition containing a resin and a foaming agent (for example, a thermal decomposition type foaming agent, a microcapsule type foaming agent) to a foaming treatment. As the resin constituting the foamed resin layer 6, for example, a vinyl chloride resin or an olefin resin can be adopted. The total mass of the foamed resin layer 6 is 400 g / m ² or less. The organic mass of the foamed resin layer 6 is 260 g / m ² or less. If it is larger than 260 g / m ² , the non-combustible performance deteriorates.

The pattern layer 7 is formed by printing a pattern with printing ink. Examples of the printing ink include chlorinated polyethylene, chlorinated polyolefin such as chlorinated polypropylene, polyester, polyurethane composed of isocyanate and polyol, acrylic, vinyl acetate, vinyl chloride / vinyl acetate copolymer, cellulose-based resin, and the like. A product obtained by adding a pigment, a solvent, various auxiliary agents, or the like to a mixture of one or more types of a polyamide resin or the like and inking can be used. Examples of the pattern include a wood grain pattern, a stone pattern, a cloth pattern, a leather pattern, a geometric figure, a character, a symbol, or a printed pattern such as a solid surface.

A backing material 5 or the like may be formed between the base board 2 and the foamed resin layer 6. As the backing material 5, for example, a non-woven fabric including a papermaking body such as flame-retardant paper, Japanese paper, and glass fiber non-woven fabric can be adopted. Further, a top coat layer 8 or the like may be formed on the surface 7a of the pattern layer 7 opposite to the foamed resin layer 6. Further, the eval film may be laminated. The thickness of the decorative sheet 4 is not particularly limited, but is preferably less than 450 μm in consideration of crushing during product storage.

As described above, in the decorative board 1 according to the present embodiment, the base material board 2 and the base material of the foamed resin layer 6 are attached to one surface 2a side of the base material board 2. A decorative sheet 4 having a pattern layer 7 formed on the surface 6a side opposite to the board 2 was provided. Then, the base material board 2 is used as a non-combustible material specified in the Ministry of Construction Notification No. 1400 of 2000 or the quasi-non-combustible material specified in the Notification No. 1401 of the Ministry of Construction in 2000, and the decorative sheet 4 is constructed in 2000. It was a semi-incombustible material specified in Ministry of Construction Notification No. 1401. Further, the organic mass contained in the decorative sheet 4 was set to 260 g / m ² or less. Further, the adhesive 3 used for pasting was an adhesive having a ratio of starch paste and synthetic resin emulsion of 100: 0 to 80:20.

Therefore, the base material board 2 has non-combustible performance, the organic mass of the decorative sheet 4 is limited to an appropriate range, and the blending ratio and the coating amount of the adhesive 3 are adjusted to an appropriate range. It can be made semi-incombustible so that it can be used for special buildings such as. In addition, since the decorative sheet is attached, the design can be improved. Therefore, it is possible to provide the decorative board 1 which has semi-incombustibility and is excellent in design. Further, the interior wall using such a decorative board 1 is different from a general interior wall which requires many steps such as gypsum board construction, putty filling, drying, wall surface construction, and drying, and takes a long time. Since it is only installed directly on the wall material and no subsequent process is required, it can be expected to save construction. Further, since the wall surface construction is completed by constructing the base material board 2, it is possible to prevent the decorative sheet 4 from being cracked or torn due to unevenness of the base, an earthquake or aging.

In addition, the decorative board 1 according to this embodiment is a heating test based on the provisions of Article 1, Item 5 (quasi-incombustible material) of the Building Standard Law Construction Example (Cabinet Order No. 338 of 1950) in accordance with ISO5660-1. In (1) the total calorific value for 10 minutes after the start of heating is 8 MJ / m ² or less, (2) for 10 minutes after the start of heating, there are no cracks or holes penetrating to the back surface harmful to fire protection, and (3) 10 after the start of heating. It was made to have quasi-incombustibility that satisfies the condition that the maximum heat generation rate does not exceed 200 kW / m ² continuously for 10 seconds or more for 1 minute. Therefore, it can also be used for special buildings such as condominiums and hotels.
Further, in the decorative board 1 according to the present embodiment, the adhesive 3 used for sticking is contained in a ratio of starch paste and synthetic resin emulsion at a ratio of 95: 5 to 80:20, and the amount of the adhesive 3 applied is solid. Since it is 20 g / m ^{2 or more and 60 g / m 2 or} less in terms of minutes, the adhesiveness can be improved.

(Example)
Hereinafter, examples and comparative examples of the decorative board 1 according to the embodiment of the present invention will be described. The present invention is not limited to the following examples.

(Example 1)
First, as the backing material 5, plain paper having a basis weight of 65 g / m ² (manufactured by Nippon Paper Industries, Ltd .: "NI65AT") was prepared. Subsequently, on the surface of the backing material 5, a heat-expandable microcapsule foaming agent (Matsumoto Yushi Pharmaceutical: "FT-16") was applied to 100 parts by mass of EVA resin (manufactured by Sumika Chemtex: "S-7400 (HQ)"). A paste containing 12.2 parts by mass and 90 parts by mass of calcium carbonate (Asahi Mineral Powder Co., Ltd .: "MC-100"), which is an inorganic powder, was applied by a coating method to form a foamed resin layer 6. .. The organic mass of the foamed resin layer 6 was set to 200 g / m ² . Subsequently, a pattern was printed on the surface of the foamed resin layer 6 with an acrylic resin-based ink by a gravure printing method to form a pattern printing layer. The basis weight of the pattern printing layer was 2 g / m ² . Subsequently, an acrylic top coat was applied to the surface of the pattern printing layer by a gravure coating method to form the top coat layer 8. The basis weight of the top coat layer was 5 g / m ² . Subsequently, the foaming agent is heated and foamed, an embossed pattern is given to the surface on the surface protective layer side by embossing roll pressure, and the whole is cooled and dried to obtain a semi-incombustible decorative sheet 4 (quasi-incombustible material). ) Was formed.

Subsequently, an adhesive 3 containing starch paste and a synthetic resin emulsion was applied to the backing material 5 of the formed decorative sheet 4 using a lip coater, and then dried with warm air at 55 ° C. for 60 seconds. .. As the synthetic resin emulsion, ethylene vinyl acetate resin was used. The amount of the adhesive 3 applied was 40 g / m ² in terms of solid content. Subsequently, the decorative sheet 4 was attached to the base board 2 via the coated adhesive 3. As the base material board 2, a gypsum board (Tigerboard GB-R9) having a thickness of 9.5 mm and a square edge, which has the noncombustible performance of a semi-incombustible material (QM-9828), was used. Subsequently, the surface of the decorative sheet 4 was laminated with an ever film by a thermal roll. As a result, the decorative sheet 4 of Example 1 was produced.

(Example 2)
In Example 2, as the decorative sheet 4, a filler (manufactured by Bikita Powder Industry Co., Ltd .: "BF-200S") is used for 100 parts by mass of a vinyl chloride resin (manufactured by Tosoh Corporation: "T-70A"). A vinyl chloride wallpaper having a foamed resin layer 6 coated with a paste containing 165 parts by mass and a foaming agent (manufactured by Unicell Co., Ltd .: “OH-300N”) 2.5 parts by mass was used. The decorative board 1 of Example 2 was produced in the same manner as in Example 1 except for the above.
(Example 3)
In Example 3, the organic mass of the foamed resin layer 6 was set to 260 g / m ² . The decorative board 1 of Example 2 was produced in the same manner as in Example 1 except for the above.

(Example 4)
In Example 4, the organic mass of the foamed resin layer 6 was set to 260 g / m ² . The decorative board 1 of Example 4 was produced in the same manner as in Example 2 except for the above.
(Example 5)
In Example 5, the amount of the adhesive 3 applied was 10 g / m ² in terms of solid content. The decorative board 1 of Example 5 was produced in the same manner as in Example 3 except for the above.
(Example 6)
In Example 6, the coating amount of the adhesive 3 was set to 20 g / m ² in terms of solid content. The decorative board 1 of Example 6 was produced in the same manner as in Example 3 except for the above.

(Example 7)
In Example 7, the coating amount of the adhesive 3 was set to 60 g / m ² in terms of solid content. The decorative board 1 of Example 7 was produced in the same manner as in Example 3 except for the above.
(Example 8)
In Example 8, the blending ratio of the starch paste of the adhesive 3 and the synthetic resin emulsion was set to 100: 0. The decorative board 1 of Example 8 was produced in the same manner as in Example 3 except for the above.
(Example 9)
In Example 9, the blending ratio of the starch paste of the adhesive 3 and the synthetic resin emulsion was set to 85:15. The decorative board 1 of Example 9 was produced in the same manner as in Example 1 except for the above.

(Comparative Example 1)
In Comparative Example 1, the organic mass of the foamed resin layer 6 was set to 300 g / m ² . The decorative board 1 of Comparative Example 1 was produced in the same manner as in Example 1 except for the above.
(Comparative Example 2)
In Comparative Example 2, the organic mass of the foamed resin layer 6 was set to 300 g / m ² . The decorative board 1 of Comparative Example 2 was produced in the same manner as in Example 2 except for the above.

(Comparative Example 3)
In Comparative Example 3, the coating amount of the adhesive 3 was set to 80 g / m ² in terms of solid content. The decorative board 1 of Comparative Example 3 was produced in the same manner as in Example 3 except for the above.
(Comparative Example 4)
In Comparative Example 4, the blending ratio of the starch paste of the adhesive 3 and the synthetic resin emulsion was set to 75:25. The decorative board 1 of Comparative Example 4 was produced in the same manner as in Example 3 except for the above.

(Performance evaluation)
The following performance evaluations were performed on the decorative boards 1 of Examples 1 to 9 and Comparative Examples 1 to 4.
(Non-combustible performance)
In the quasi-incombustible evaluation, the following criteria (in the heating test based on the provisions of Article 1, Item 5 (quasi-incombustible material) of the Building Standard Law Construction Example (Cabinet Order No. 338 of 1950), in accordance with ISO5660-1 It was determined whether all of 1), (2) and (3) were satisfied. Then, the case where it was determined to be satisfied was regarded as a pass "○", and the case where it was determined to be unsatisfied was regarded as a fail "x".
(1) Total calorific value for 10 minutes after the start of heating is 8 MJ / m ² or less (2) No cracks or holes penetrating to the back surface harmful to fire protection for 10 minutes after the start of heating (3) Maximum 10 minutes after the start of heating The heat generation rate does not exceed 200 kW / m ² continuously for 10 seconds or more.

(Adhesion)
In the adhesion evaluation, it was confirmed whether or not the edge of the decorative sheet 4 was lifted (rebounded) immediately after the decorative sheet 4 was attached (wrapped) to the base material board 2. Then, the case where it was determined that there was no float was regarded as a pass "○", and the case where it was determined that there was a float was regarded as a fail "×".
(Evaluation results)
The evaluation results are shown in Table 1. In Table 1, in addition to the evaluation results of "non-combustible performance" and "adhesion", the results of "comprehensive evaluation" based on these evaluation results are also shown. In the "comprehensive evaluation", "○" and "△" are accepted, and "×" is rejected.

As shown in Table 1 above, in the decorative boards 1 of Examples 1 to 9, the evaluation result of "non-combustible performance" was "○", and the "comprehensive evaluation" was "○" and "Δ". Specifically, in Examples 1 to 4, 6, 7, and 9, "non-combustible performance" and "adhesion" were passed "○", and "comprehensive evaluation" was passed "○". Further, in Example 4, the "non-combustible performance" was passed "○", but the "adhesiveness" was rejected "×" because the coating amount of the adhesive 3 was set to 10 g / m ² (reduced) in terms of solid content. , And the overall evaluation passed "△". Further, in Example 8, the "non-combustible performance" was "○", but the blending ratio of the starch paste of the adhesive 3 to the synthetic resin emulsion was set to 100: 0 (the amount of starch paste was increased), so that "adhesion" was obtained. Was rejected as "x", and the overall evaluation was "△".

On the other hand, in the decorative boards 1 of Comparative Examples 1 and 2, since the organic mass of the foamed resin layer 6 was set to 300 g / m ² (increased), the "non-combustible performance" was rejected as "x" and the "comprehensive evaluation" was given. It was rejected "x". Further, in the decorative board 1 of Comparative Example 3, since the coating amount of the adhesive 3 was set to 80 g / m ² (increased) in terms of solid content, the "non-combustible performance" was rejected as "x" and "comprehensive evaluation". Was rejected as "x". Further, in the decorative board 1 of Comparative Example 4, the blending ratio of the starch paste of the adhesive 3 and the synthetic resin emulsion was set to 75:25 (the amount of the synthetic resin emulsion was increased), so that "nonflammability" was rejected "x". , And the "comprehensive evaluation" was rejected "x".

Therefore, it was confirmed that the decorative boards 1 of Examples 1 to 9 had quasi-nonflammable properties unlike the decorative boards 1 of Comparative Examples 1 to 4. Further, it was confirmed that the decorative boards 1 of Examples 1 to 9 have the decorative sheet 4 attached to them, so that the designability is improved. Therefore, it has been confirmed that it is possible to provide a decorative board 1 having semi-incombustibility and excellent design. Further, it was confirmed that the decorative boards 1 of Examples 1 to 4, 6, 7, and 9 have excellent adhesion between the base material board 2 and the decorative sheet 4 unlike the decorative boards 1 of Examples 5 and 8. ..

1 ... decorative board, 2 ... base material board, 3 ... adhesive, 4 ... decorative sheet, 5 ... backing material, 6 ... resin layer

Claims (3)

Base board and
A decorative sheet attached to one surface side of the base material board and having a foamed resin layer and a pattern layer formed on the surface side of the foamed resin layer opposite to the base material board is provided.
The base material board is a non-combustible material specified in the Ministry of Construction Notification No. 1400 of 2000, or a quasi-non-combustible material specified in the Notification No. 1401 of the Ministry of Construction in 2000.
The decorative sheet is a semi-incombustible material specified in Notification No. 1401 of the Ministry of Construction in 2000.
The organic mass contained in the foamed resin layer is 260 g / m ² or less, and is
The adhesive used for the pasting is an adhesive having a ratio of starch glue to a synthetic resin emulsion of 100: 0 to 80:20.
A decorative board characterized in that the amount of the adhesive applied is 60 g / m ² or less in terms of solid content. In the heating test based on the provisions of Article 1, Item 5 (quasi-incombustible material) of Building Standard Law Construction Example (Cabinet Order No. 338, 1950) in accordance with ISO5660-1 (1) Total heat generation for 10 minutes after the start of heating. The amount is 8 MJ / m ² or less (2) No cracks or holes penetrating to the back surface harmful to fire protection for 10 minutes after the start of heating (3) 10 minutes after the start of heating, the maximum heat generation rate continues for 10 seconds or more. The decorative board according to claim 1, wherein the decorative board has a semi-incombustible property that satisfies a condition not exceeding 200 kW / m ² . The adhesive contains starch paste and a synthetic resin emulsion in a ratio of 95: 5 to 80:20.
The decorative board according to claim 1 or 2, wherein the amount of the adhesive applied is 20 g / m ^{2 or more and 60 g / m 2 or} less in terms of solid content.

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