JP2016006277A - Decorative material, production method of decorative material, and wall surface structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative material, a production method of the decorative material, and a wall surface structure which make it possible to improve the appearance of a portion having the decorative material applied thereto.SOLUTION: When viewed in a cross-section parallel with the plate thickness direction, at least part of an end surface (3) of this decorative material (1) has a curved shape. Preferably, the decorative material comprises a resin composition (5) comprising thermoplastic resin at the deep side of the end surface. The decorative material comprises a decorative layer (7) that covers the surface of the decorative material and an exposure part (11) in which the resin composition is exposed on the surface of the decorative material, and preferably, a discontinuous part (13) of the decorative layer is present on the exposure part. Preferably, the resin composition comprises inorganic filler. The thermoplastic resin includes at least one selected from the group consisting of an ethylene vinyl acetate copolymer, a styrenic resin, a polyolefin resin, and a polyamide resin.

Description

  The present invention relates to a decorative material, a method for manufacturing a decorative material, and a wall surface structure.

  Conventionally, decorative materials such as melamine resin decorative boards have been used for various applications (see Patent Documents 1 to 4). As a method of applying the decorative material to the wall surface, a so-called “watermark” in which a certain gap is provided between the decorative material and the decorative material, or the decorative material and the decorative material are abutted (the gap between the decorative materials is There is a so-called “impulse” that is tensioned (without provision).

JP 2004-358873 A JP 2005-271489 A JP 2008-062385 A JP 2004-25523 A

  Cosmetic materials may shrink in size. When shrinkage occurs in the makeup material applied by the “eye-opening” method, the gaps between the makeup materials vary, and the appearance is not good. Further, when dimensional shrinkage occurs in the decorative material applied by the “butting” method, a gap between the decorative materials, which should not have been originally generated, is generated, and the appearance is not good.

  This invention is made | formed in view of this condition, and it aims at providing the cosmetics which can improve the appearance of the part which constructed the cosmetics, the manufacturing method of cosmetics, and a wall surface structure.

  At least a part of the end surface of the decorative material of the present invention has a curved surface shape when viewed in a cross section parallel to the plate thickness direction. Therefore, when the cosmetic material of the present invention is applied by the “eye-opening” method, the variation in the gaps between the decorative materials is not noticeable, and the appearance of the portion where the cosmetic material is applied is good. In addition, when the decorative material of the present invention is applied by the “butting” method, even if a gap is generated between the decorative materials, it is not noticeable, and the portion where the decorative material is applied looks good.

  In the decorative material manufacturing method of the present invention, in the decorative material before the curved surface shape is formed, a range including the end surface thereof is directed from one surface in the plate thickness direction toward the opposite surface. Cutting the remaining portion of the thickness, placing the resin composition on the remaining portion, bending the remaining portion, and the remaining portion and the cutting end face generated by the cutting And a step of wrapping the resin composition. According to the production method of the present invention, the decorative material can be easily produced.

  The wall surface structure of the present invention is characterized by comprising a wall surface base and the above-described decorative material attached to the wall surface base. The wall surface structure of the present invention looks good by using the above-mentioned decorative material.

2 is a cross-sectional view illustrating a configuration of a decorative material 1. FIG. It is sectional drawing showing the structure of the decorative material 1 in which the end surface 3 of both sides has a curved surface shape. It is sectional drawing showing the structure of the cosmetics 1 in which an exposed part and a discontinuous part do not exist. 2 is a cross-sectional view illustrating a laminated structure of a decorative material 1. FIG. 2 is a cross-sectional view illustrating a laminated structure of a decorative material 1. FIG. 2 is a cross-sectional view illustrating a laminated structure of a decorative material 1. FIG. 7A to 7H are explanatory diagrams illustrating manufacturing steps of the decorative material 1. 5 is an explanatory diagram illustrating a manufacturing process of the decorative material 1. FIG. It is sectional drawing showing a wall surface structure.

An embodiment of the present invention will be described.
1. Cosmetic Material At least a part of the end surface of the cosmetic material of the present invention has a curved shape when viewed in a cross section parallel to the plate thickness direction. Due to the curved shape, when the “watermark” method is used for the construction, the gaps between the makeup materials are less noticeable. Is inconspicuous. Moreover, by having a curved surface shape, the end face of the decorative material is not easily damaged.

  As an example of the decorative material, there is a decorative material 1 shown in FIG. FIG. 1 is a cross-sectional view in a cross section parallel to the plate thickness direction of the decorative material 1 and parallel to the longitudinal direction of the decorative material 1. The basic shape of the decorative material 1 is a plate shape. The decorative material 1 is, for example, a laminate including a decorative layer 7 and a core layer 9 that cover the surface thereof. The end surface 3 of the decorative material 1 has a curved surface shape when viewed in a cross section parallel to the plate thickness direction. The curved surface shape is, for example, a curved surface shape protruding outward, and is a substantially arc shape.

  Among the sides constituting the outer edge of the decorative material 1, the end surface 3 on some of the sides may have a curved shape, or the end surfaces 3 on all the sides may have a curved shape. For example, as shown in FIG. 2, the end surfaces 3 on both sides may have a curved shape, or the end surfaces on one side may have a curved shape. FIG. 2 is a cross-sectional view in a cross section parallel to the plate thickness direction of the decorative material 1 and parallel to the longitudinal direction of the decorative material 1.

  The decorative material of the present invention preferably has a resin composition containing a thermoplastic resin on the back side of the end face. Since the resin composition has a characteristic of absorbing impact, when the decorative material of the present invention has a resin composition, the impact resistance of the decorative material is improved. Since the resin composition contains a thermoplastic resin, it can be easily filled during production.

  The form of the resin composition 5 can be as shown in FIGS. 1 and 2, for example. The resin composition 5 includes, for example, an exposed portion 11 exposed on the surface of the decorative material 1. The position of the exposed portion 11 is, for example, a position deviated from the end surface 3 and in the vicinity of the end surface 3.

  The decorative layer 7 has the discontinuous part 13 on the exposed part 11, for example. Examples of the discontinuous portion 13 include a portion where the decorative layer 7 does not exist, a portion where the decorative layers 7 on both sides of the cut portion are separated from each other, and the like. When the decorative layer 7 has the discontinuous part 13 on the exposed part 11, even if the end surface 3 is pressed and the resin composition 5 is elastically deformed, the decorative layer 7 is hardly cracked.

  On the other hand, as shown in FIG. 3, the resin composition 5 is exposed on the surface of the core layer 9, but when the resin composition 5 is covered with the decorative layer 7, the end surface 3 is pressed and the resin composition 5 is covered. When the composition 5 is elastically deformed, the decorative layer 7 tends to crack.

  As shown in FIG. 1, the end portion 15 sandwiched between the end surface 3 and the resin composition 5 in the decorative material 1 includes, for example, a part of the core layer 9 and the decorative layer 7. In this case, the impact resistance of the decorative material 1 is improved. Further, the end portion 15 may not include the core layer 9 but may include the decorative layer 7. In this case, it is preferable that the decorative layer 7 has a sufficient thickness.

  It is desirable that the following mathematical formula (1) is satisfied with respect to the thickness t (the thickness from the end surface 3 to the resin composition 5) t and the plate thickness T of the decorative material 1. When Formula (1) is materialized, the cosmetic material 1 can be easily manufactured by a method described later.

  It is preferable that a resin composition contains an inorganic filler with a thermoplastic resin. When the inorganic filler is included, the heat resistance of the decorative material is improved. In the resin composition, the blending amount of the inorganic filler is preferably larger than the blending amount of the thermoplastic resin. For example, the weight ratio of the thermoplastic resin to the inorganic filler is preferably in the range of 25 to 45:75 to 55, and more preferably in the range of 30 to 40:70 to 60. When it is within this range, the adhesiveness between the resin composition and other members in the decorative material is good. Moreover, when it exists in this range, since the organic component decreases, the heat resistance of the decorative material is further improved.

The resin composition containing an inorganic filler preferably has a melt viscosity of 15 to 30 Pa · s (Brookfield viscometer, 0.5 rpm / 25 ° C.) at 200 ° C.
As inorganic fillers, aluminum hydroxide, magnesium hydroxide, fumed silica, silica, heavy calcium carbonate, light calcium carbonate, semi-cold calcium carbonate, colloidal calcium carbonate, magnesium carbonate, clay, talc, fly ash, phosphate glass Etc. When these are mix | blended with a resin composition, the heat resistance of a decorative material will improve.

  As the inorganic filler, heavy calcium carbonate having an average particle diameter of 0.05 to 20 μm (more preferably 1 to 15 μm) or aluminum hydroxide is preferable. In addition, light calcium carbonate means calcium carbonate that is produced by calcining limestone and heavy calcium carbonate means finely powdered calcium carbonate made by dry or wet pulverization of white crystalline limestone.

  Examples of the thermoplastic resin contained in the resin composition include one or more selected from the group consisting of ethylene vinyl acetate copolymer (EVA resin), styrene resin, polyolefin resin, and polyamide resin. . The thermoplastic resin may be a mixed resin of two or more selected from the above group.

  The EVA resin includes an EVA copolymer obtained by polymerizing ethylene and vinyl acetate, an EVA hydrolyzate obtained by hydrolyzing the EVA copolymer, and an EVA obtained by graft polymerization of other components to the EVA copolymer. Examples include graft terpolymers.

  Styrene resins include styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene-butadiene-styrene block copolymer (SEBS), and α-methyl. Styrene-butadiene-α-methylstyrene block copolymer, α-methylstyrene-isoprene-α-methylstyrene block copolymer, and hydrogenated modified products thereof such as styrene-ethylene- (ethylene-propylene) -styrene block Examples thereof include a copolymer (SEEPS) and a styrene-ethylene-propylene-styrene block copolymer (SEPS).

  Examples of polyolefin resins include homopolymers of α-olefins such as polyethylene, polypropylene, polybutene-1 or polymethylpentene, and copolymers of α-olefins with other copolymerizable monomers. Amorphous polyolefin having good properties, heat resistance and low-temperature adhesiveness is preferred.

  Amorphous polyolefin is an amorphous olefin polymer obtained by homopolymerization of propylene or copolymerization of propylene with other olefins such as ethylene and butene-1. Specific examples of the amorphous polyolefin include propylene / ethylene copolymer, propylene / butene-1 copolymer, propylene / butene-1 / ethylene / ternary copolymer, propylene / hexene-1 / octene-1 / ternary. Examples thereof include resins, propylene / hexene-1,4-methylpentene-1, ternary copolymer, propylene / hexene-1, 4-methylpentene-1, ternary copolymer, and polybutene-1.

  It is preferable that the weight molecular weight (Mw) by the GPC (gel permeation chromatography) method of polyolefin resin is 20000-50000 (preferably 30000-40000), and the viscosity in 190 degreeC is 1500-4000 (more preferably). Is preferably 2000 to 3500) cP, and the glass transition point is preferably 0 ° C. or lower.

  If a polyolefin-based resin having the above physical properties is used, the elasticity, cohesive force, heat resistance, and fluidity of the resin composition become more appropriate. Examples of commercially available polyolefin-based resins include Ubetac UT2780 (trade name, manufactured by Ube Lexen), Lexstack RT 2280 (trade name, manufactured by Huntsman), Best Plast 703 (trade name, manufactured by Degussa), and the like.

  Any one of the styrene resin and the polyolefin resin may be used alone, or both may be used in combination. When both are used in combination, the adhesion between the resin composition and other members in the decorative material is improved, and the heat resistance of the decorative material is improved. When both are used together, the blending ratio (weight ratio) of the styrene resin and the polyolefin resin is preferably in the range of 60 to 75:40 to 25. When it is within this range, the fluidity of the resin composition in an uncured state becomes more appropriate.

  The polyamide-based resin is a resin obtained by reacting a dibasic acid called dimer acid with a diamine. Examples of polyamide resins include adipic acid, azelaic acid, sebacic acid and the like added to unsaturated fatty acids such as tall oil fatty acid and soybean oil fatty acid, and further ethylenediamine, hexamethylenediamine, isophoronediamine, xylenediamine, 4- Examples include those obtained by reacting 4′-diamino, cyclohexylmethane, PP′-methylenedianiline, biverazine, trimethylhexamethylenediamine, alkanolamine, and the like. The ring and ball softening point of the polyamide-based resin is preferably in the range of 50 to 200 ° C. Commercially available products of polyamide-based resins include the product name Bar Salon manufactured by Henkel Japan Co., Ltd., and the product name Tomide manufactured by Fuji Kasei Kogyo Co., Ltd.

Particularly suitable thermoplastic resins are styrene resins and polyolefin resins in terms of hardness, adhesion, cost, and the like.
The hardness of the resin composition is preferably lower than that of the core layer. Moreover, when a decorative material is a thermosetting resin decorative board, it is preferable that the softening temperature of a resin composition is lower than the heat-resistant temperature of a thermosetting resin decorative board. For example, the softening temperature of the resin composition is about 110 to 175 ° C, and the heat resistance of the thermosetting resin decorative board based on JISK6902 is preferably 180 ° C or higher.

  Further, the hardness of the resin composition is preferably 65 to 85 ° in JIS A type. When the hardness of the resin composition is within the above range, the impact resistance of the end face is further improved, and dents and dents are hardly generated even when pressure is applied during normal construction work.

  The decorative material of the present invention can be, for example, a thermosetting resin decorative board (for example, a nonflammable resin decorative board). As a decorative material which is a thermosetting resin decorative board, for example, a decorative material 1 shown in FIG. 4 is exemplified. The decorative material 1 includes a decorative layer 7 and a core layer 9. In FIG. 4, the end face is not shown.

  In the decorative material 1 shown in FIG. 4, the decorative layer 7 is, for example, a resin-impregnated decorative paper that is obtained by impregnating a decorative paper for a decorative board with a resin liquid containing a thermosetting resin as a main component and then drying. The core layer 9 is formed by stacking a plurality of prepregs 17. The prepreg 17 is obtained, for example, by impregnating a fibrous base material such as inorganic fiber or organic fiber with a slurry containing a binder component made of a thermosetting resin and an inorganic filler, and drying the slurry.

  Moreover, as a decorative material which is a thermosetting resin decorative board, the decorative material 1 shown in FIG. 5 is mentioned, for example. The decorative material 1 includes a decorative layer 7 and a core layer 9. In FIG. 5, the end face is not shown.

  In the decorative material 1 shown in FIG. 5, the decorative layer 7 is, for example, a resin-impregnated decorative paper obtained by impregnating a decorative paper for a decorative board with a resin liquid containing a thermosetting resin as a main component and then drying. The core layer 9 is formed by laminating a plurality of resin-impregnated core papers 19, for example. The resin-impregnated core paper 19 is obtained by, for example, impregnating a bleached kraft paper or an unbleached kraft paper with a resin liquid containing a thermosetting resin as a main component and drying it.

  Moreover, as a decorative material which is a thermosetting resin decorative board, the decorative material 1 shown in FIG. 6 is mentioned, for example. The decorative material 1 includes a decorative layer 7, a core layer 9, and a balance layer 21. The decorative layer 7 is provided on one side of the decorative material 1, and the balance layer 21 is provided on the opposite surface. In FIG. 6, the end face is not shown.

  The decorative layer 7 is, for example, a resin-impregnated decorative paper obtained by impregnating a decorative paper for a decorative board with a resin liquid containing a thermosetting resin as a main component and then drying it. For example, the core layer 9 is formed by laminating a plurality of resin-impregnated core papers 19. The resin-impregnated core paper 19 is obtained by, for example, impregnating a bleached kraft paper or an unbleached kraft paper with a resin liquid containing a thermosetting resin as a main component and drying it.

  Among the decorative materials that are thermosetting resin decorative plates, decorative materials that are non-flammable resin decorative plates are preferable, and in particular, decorative materials that are non-flammable melamine resin decorative plates are preferable. A decorative material which is a nonflammable melamine resin decorative board is excellent in heat resistance, wear resistance, strength, and the like.

In addition, the nonflammable melamine resin decorative board refers to a board that satisfies all of the following α to γ after performing a 20-minute exothermic test using a corn calorimeter in accordance with ISO5660.
α: The total calorific value is 8 MJ / m ² or less.

β: The maximum heat generation rate does not exceed 200 kW / m ² continuously for 10 seconds or more.
γ: No cracks or holes penetrating to the back surface for 20 minutes after the start of the test.
As the decorative layer, for example, melamine resin-impregnated decorative paper, diallyl phthalate resin-impregnated decorative paper, diallyl phthalate-unsaturated polyester resin-impregnated decorative paper can be used for the non-flammable resin decorative board. Moreover, the nonflammable resin decorative board can use the prepreg which impregnated the slurry containing the binder component which consists of a thermosetting resin, and an inorganic filler as a core layer, and dried, for example.

  The blending ratio of the organic resin (thermosetting resin) and the inorganic filler in the binder component is preferably in the range of 5-20: 95-80. When the inorganic filler is increased with respect to the organic resin, the incombustibility is improved, but the adhesion is easily lowered. When the inorganic filler is decreased, the adhesion is improved, but the incombustibility is easily lowered.

2. Manufacturing method of decorative material The decorative material of this invention can be manufactured with the following method, for example. First, as shown in FIG. 7A, a pre-processing decorative material (hereinafter referred to as an unprocessed decorative material) 23 is prepared. The raw decorative material 23 is a laminate including the decorative layer 7 and the core layer 9 and is manufactured by hot-pressure integration. The end face 25 of the raw decorative material 23 has a flat shape. The thickness of the raw decorative material 23 is T.

  Next, as shown in FIG. 7B, in the raw decorative material 23, a range 27 including the end face 25 is left with a predetermined thickness from one surface 29 in the plate thickness direction toward the opposite surface 31. It cuts, leaving the part 33. The remaining portion 33 includes, for example, a part of the core layer 9 and the decorative layer 7. This cutting produces a cut end face 34. At this time, the angle formed by the remaining portion 33 and the cutting end surface 34 is preferably an acute angle. When the angle is acute, the subsequent steps are facilitated.

  The thickness of the remaining portion 33 is thinner on the cutting end surface side 34 side than on the tip end 35 side. Let t be the thickness of the thinnest portion 37 of the remaining portion 33. For the thickness t and the plate thickness T, the following mathematical formula (1) is preferably established.

  When Equation (1) is established, when the remaining portion 33 is bent in a process described later, the remaining portion 33 is not easily damaged, and a sufficiently small R (curvature radius, unit: mm) can be realized in the shape of the end face.

  Next, as shown in FIG. 7C, the vicinity of the thinnest portion 37 is heated to 20 to 140 ° C. using an infrared heater 39. Since the remaining portion 33 is softened by heating, when the remaining portion 33 is bent in a process described later, it is possible to prevent the remaining portion 33 from cracking or remaining portion 33 from cracking. Moreover, the fluidity | liquidity of the resin composition used at the process mentioned later can be improved by heating, and solidification can be suppressed. As a result, the adhesive strength of the resin composition is improved.

  Next, heating is stopped, and the resin composition 5 is discharged from the applicator and placed on the remaining portion 33 as shown in FIG. 7D. The position of the resin composition 5 is a position of the remaining portion 33 on the cutting end face 34 side. At this time, the temperature of the resin composition 5 is 100-190 degreeC.

  Next, as shown in FIGS. 7E to 7G, the remaining portion 33 is bent while being pressed with a jig or the like, and the resin composition 5 is sandwiched between the remaining portion 33 and the cut end surface 34. At this time, heating is performed using the infrared heater 39 so that the temperature on the surface side of the remaining portion 33 is maintained at a temperature of 120 to 180 ° C. The bending process is performed until the remaining portion 33 contacts the surface 29. Since the resin composition 5 adheres the cut end face 34 and the remaining portion 33, the shape after bending is maintained even when the pressure on the remaining portion 33 is released.

  After the end of the bending process, the heating is stopped and the remaining portion 33 and the resin composition 5 are cooled. Next, after the resin composition 5 is cured, as shown in FIG. 7H, an excess portion of the remaining portion 33 is cut, and the cut portion is finished with a trimming cutter to complete the decorative material 1.

  The manufactured decorative material 1 has a curved end surface 3. The end surface 3 is a surface that was originally on the surface 31 side of the remaining portion 33 that has been bent. The decorative material 1 has a resin composition 5 on the back side of the end surface 3. In the decorative material 1, the end 15 is constituted by a remaining portion 33 (particularly the thinnest portion 37). The end portion 15 includes, for example, a part of the core layer 9 and the decorative layer 7. The resin composition 5 includes an exposed portion 11. The decorative layer 7 does not exist on the exposed portion 11 (the discontinuous portion 13 of the decorative layer 7 exists).

  In the manufacturing method described above, when the raw decorative material 23 is cut, first, primary cutting may be performed so as to obtain the shape shown in FIG. At this stage, the thickness of the remaining portion 33 is constant everywhere. Next, the cutting end surface 34 side of the remaining portion 33 may be secondarily cut to form the thinnest portion 37 to realize the shape shown in FIG. 7B.

3. Wall Surface Structure The wall surface structure of the present invention includes a wall surface base and a decorative material attached to the wall surface base. As the wall surface structure, for example, as shown in FIG. 9, a wall surface base 41 having the decorative material 1 attached thereto using an adhesive 43 can be used. The method of attaching the decorative material 1 may be “striking” shown in FIG. 9 or “eye watermark”.

In the wall surface structure of the present invention, the end surface 3 of the decorative material 1 has a curved surface shape. Therefore, in the case of “watermark”, the variation in the space between the decorative materials is hardly noticeable. Even if this occurs, the gap is not noticeable. Further, the end surface 3 of the decorative material 1 is not easily damaged.
(Example 1)
1. Configuration of the decorative material 1 The decorative material 1 of the present embodiment has the configuration shown in FIG. The basic shape of the decorative material 1 is a plate shape having a certain thickness except for an end face 3 described later. The decorative material 1 has a rectangular shape when viewed from the thickness direction. FIG. 1 is a cross-sectional view of a cross section parallel to the plate thickness direction and parallel to the long side of the rectangle.

  The decorative material 1 is a laminate including a decorative layer 7 and a core layer 9 that cover the surface thereof. One end surface 3 of the decorative material 1 has a curved surface shape when viewed in a cross section parallel to the plate thickness direction. More specifically, the curved surface shape is a curved surface shape that protrudes outward, and has a substantially arc shape. The end faces on the other three sides of the decorative material 1 have a flat shape.

  The decorative material 1 has a resin composition 5 containing a thermoplastic resin on the back side of the end surface 3. The surface 5 </ b> A on the end surface 3 side in the resin composition 5 has a curved surface shape similar to that of the end surface 3. The surface 5B opposite to the end surface 3 in the resin composition 5 is a flat surface. The surface 5B is inclined with respect to the main surface of the decorative material 1.

The resin composition 5 includes an exposed portion 11 exposed on the surface of the decorative material 1. The exposed portion 11 is located away from the end surface 3 and in the vicinity of the end surface 3.
The decorative layer 7 has a discontinuous portion 13 on the exposed portion 11. The discontinuous portion 13 is a portion where the decorative layer 7 does not exist. In the decorative material 1, the end 15 sandwiched between the end face 3 and the resin composition 5 is composed of a part of the core layer 9 and the decorative layer 7. The following formula (1) is established for the thickness t of the end portion 15 (thickness from the end surface 3 to the resin composition 5) t and the plate thickness T of the decorative material 1.

The decorative material 1 is a nonflammable melamine resin decorative board. The decorative material 1 has the structure shown in FIG. 4 except for the vicinity of the end face 3. The decorative material 1 is formed by laminating a front side decorative layer 7 (one sheet), a prepreg 17 (5 sheets), and a back side decorative layer 7 (one sheet), and heating under conditions of 140 ° C., 100 kg / cm ² and 90 minutes. Pressure integrated. The five prepregs 17 form the core layer 9.

  The decorative layer 7 on the front side and the back side is a decorative layer made of a melamine resin-impregnated decorative paper having a thickness of 0.1 mm, which is obtained by impregnating a wood grain pattern printed paper with a melamine resin. The prepreg 17 is obtained by impregnating a glass fiber nonwoven fabric with a slurry containing a binder component containing melamine resin (8 parts by weight) and aluminum hydroxide (75 parts by weight) having an average particle diameter of 12 μm and drying. The weight ratio of the binder component to the solid content of aluminum hydroxide in the slurry is 5:65.

The plate thickness T of the decorative material 1 is 3 mm, and it has a heat resistance of 204 ° C. characteristics.
The resin composition 5 has the following composition.
Styrene-ethylene-butadiene-styrene block copolymer (SEBS) (SEPTON (registered trademark) 8076, trade name, manufactured by Kuraray Co., Ltd.): 37 parts by weight Talc 63 having an average particle diameter of 5 μm: parts by weight SEBS is thermoplastic. It is an example of resin and an example of styrene resin. Talc is an example of an inorganic filler.

2. Manufacturing method of decorative material 1 Using the raw decorative material 23, the decorative material 1 was manufactured by the manufacturing method (refer FIG. 7A-FIG. 7H) mentioned above. The raw decorative material 23 has the same configuration as the decorative material 1 except for the vicinity of the end face. The specific production conditions of the decorative material 1 were as follows.

In the cutting step shown in FIG. 7B, the length of the range 27 was 15 mm, and the depth to be cut was 2.2 mm. The thickness t in the thinnest portion 37 was set to 0.3 mm. In the step shown in FIG. 7C, the temperature of the thinnest portion 37 was 130 ° C. In the step shown in FIG. 7D, the temperature of the resin composition 5 was 140 ° C. 7E to 7H, the temperature on the surface side of the remaining portion 33 was maintained at 180 ° C.
(Example 2)
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. In the resin composition of this example, the SEBS content is 35 parts by weight, and the talc content is 65 parts by weight.
(Example 3)
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. The resin composition of the present example has the following composition.

Amorphous poly α-olefin (ethylene / propylene / 1-butene copolymer, VESTOPLAST (registered trademark) 703, manufactured by Degussa Co., Ltd., trade name, weight average molecular weight 34000 g / mol, viscosity 2000 to 3400 cP / 190 (° C., glass transition temperature (Tg) −28 ° C.): 37 parts by weight Heavy calcium carbonate having an average particle diameter of 5 μm: 63 parts by weight An amorphous polyα-olefin having propylene as a structural unit is an example of a polyolefin resin. . Heavy calcium carbonate having an average particle diameter of 5 μm is an example of an inorganic filler.
Example 4
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. The resin composition of the present example has the following composition.

SEBS: 21 parts by weight Amorphous poly α-olefin: 10 parts by weight Heavy calcium carbonate having an average particle diameter of 5 μm: 69 parts by weight SEBS is the same as in Example 1. The amorphous poly α-olefin is the same as in Example 3. Heavy calcium carbonate having an average particle diameter of 5 μm is an example of an inorganic filler.
(Example 5)
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. The resin composition of the present example has the following composition.

SEBS: 27 parts by weight Amorphous poly α-olefin: 6 parts by weight Heavy calcium carbonate having an average particle diameter of 5 μm: 67 parts by weight SEBS is the same as in Example 1. The amorphous poly α-olefin is the same as in Example 3.
(Example 6)
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. The resin composition of the present example has the following composition.

SEBS: 24 parts by weight Amorphous poly α-olefin: 6 parts by weight Heavy calcium carbonate having an average particle diameter of 5 μm: 70 parts by weight SEBS is the same as in Example 1. The amorphous poly α-olefin is the same as in Example 3.
(Example 7)
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. In the resin composition of this example, the SEBS content is 45 parts by weight, and the talc content is 55 parts by weight.
(Example 8)
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. The resin composition of this example contains an ethylene-vinyl acetate copolymer (EVA) as a main component and a tackifier resin.
Example 9
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. The resin composition of the present example has the following composition.

Tormide (registered trademark) 509 (trade name, T & K TOKA): 80 parts by weight Tormide 241 (trade name, T & K TOKA): 20 parts by weight Aluminum hydroxide having an average particle diameter of 5 μm: 165 parts by weight Phosphoric glass (manufactured by Tomatec) : 40 parts by weight Note that the tomide 509 and the tomide 241 are examples of a polyamide-based resin. Aluminum hydroxide and phosphate glass are examples of inorganic fillers.
(Example 10)
A decorative material was produced in the same manner as in Example 1 except for the composition of the resin composition. The resin composition of the present example has the following composition.

Umex (registered trademark) 100TS (trade name, manufactured by Sanyo Chemical Industries): 40 parts by weight Amorphous poly α-olefin: 180 parts by weight Talc with an average particle diameter of 5 μm: 200 parts by weight Umex 100TS and amorphous poly α-olefin are It is an example of a polypropylene resin. Talc is an example of an inorganic filler.
(Example 11)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was produced in the same manner as in Example 1 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 12)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was manufactured in the same manner as in Example 2 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 13)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was produced in the same manner as in Example 3 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 14)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was manufactured in the same manner as in Example 4 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 15)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was produced in the same manner as in Example 5 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 16)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was produced in the same manner as in Example 6 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 17)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was produced in the same manner as in Example 7 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 18)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was produced in the same manner as in Example 8 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 19)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was produced in the same manner as in Example 9 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 20)
When viewed in a cross section parallel to the long side of the decorative material, the decorative material 1 was produced in the same manner as in Example 10 except that curved surfaces were formed on the end surfaces 3 on both sides (see FIG. 2).
(Example 21)
Basically, the decorative material 1 was manufactured in the same manner as in Example 15. However, in this example, the following was used as the raw decorative material 23.

The raw decorative material 23 is a nonflammable melamine resin decorative board having a plate thickness of 3 mm and a heat resistance of 194 ° C. The raw decorative material 23 is obtained by laminating one decorative layer and 13 phenol resin-impregnated papers and integrating them with heat and pressure under conditions of 140 ° C., 100 kg / cm ² and 90 minutes.

Thirteen sheets of phenol resin impregnated paper form the core layer. The decorative layer is a melamine resin-impregnated decorative paper obtained by impregnating a wood grain pattern printed paper with a melamine resin and drying it. The thickness of the decorative layer is 0.1 mm. The phenol resin impregnated paper is obtained by impregnating a kraft paper with a phenol-formaldehyde resin and drying it.
(Example 22)
Basically, the decorative material 1 was manufactured in the same manner as in Example 15. However, in this example, the following was used as the raw decorative material 23.

  The raw decorative material 23 is a nonflammable melamine resin decorative board having a plate thickness of 3 mm and a heat resistance of 204 ° C. The raw decorative material 23 is obtained by laminating one decorative layer, five prepregs, and one melamine resin-impregnated glass fiber nonwoven fabric and integrating them with heat and pressure.

  The decorative layer is a melamine resin-impregnated decorative paper obtained by impregnating a wood grain pattern printed paper with a melamine resin and drying it. The thickness of the decorative layer is 0.1 mm. Five prepregs form a core layer. The prepreg is obtained by impregnating a glass fiber nonwoven fabric with a slurry containing a binder component containing a melamine resin and aluminum hydroxide having an average particle diameter of 12 μm and drying the slurry.

The weight ratio between the binder component and the solid content of aluminum hydroxide in the slurry is 5:65. The melamine resin-impregnated glass fiber nonwoven fabric is obtained by impregnating a glass fiber nonwoven fabric with a melamine resin and drying it.
(Evaluation of cosmetic materials)
About the decorative material of each Example, the softening temperature, the melt viscosity, and the emitted-heat amount were measured, and the bendability and adhesiveness were evaluated. The measurement method, evaluation method, and evaluation criteria were as follows.
(1) Softening temperature: Measured based on the ring and ball method (JIS K 2207 “Petroleum Asphalt Softening Point Test Method”).
(2) Melt viscosity: The melt viscosity (0.5 rpm) at 200 ° C. was measured using a digital viscometer (model: DVI-I +) manufactured by Brookfield.
(3) Calorific value: The resin composition was subjected to a 20-minute exothermic test using a cone calorimeter based on ISO 5660, and the total calorific value was measured. Based on the loading of the resin composition for decorative material, in terms of the calorific value of a unit amount per resin composition, heating value is less than 1.0 mJ / m ² or less ○, 1.0 mJ / m ² or more If it was, it was set as x.
(4) Bendability: “O” indicates that no abnormality was observed in 3R bending, and “X” indicates that a crack was observed.
(5) Adhesiveness: A case where the decorative layer did not peel off at the Kenken-type tensile tester was rated as ○.

  The evaluation results are shown in Tables 1 to 3.

DESCRIPTION OF SYMBOLS 1 ... Cosmetic material, 3 ... End surface, 5 ... Resin composition, 7 ... Makeup layer, 9 ... Core layer, 11 ... Exposed part, 13 ... Discontinuous part, 15 ... End part, 17 ... Prepreg, 19 ... Resin impregnated core Paper: 21 ... Balance layer, 23 ... Raw cosmetic material, 25 ... End face, 27 ... Range, 33 ... Remaining part, 34 ... Cutting end face, 35 ... Tip, 37 ... Thinnest part, 39 ... Infrared heater, 41 ... Wall surface Base, 43 ... Adhesive

The decorative material of the present invention comprises a thermosetting resin decorative board and a resin composition containing a thermoplastic resin. In addition, at least a part of the end surface of the decorative material of the present invention has a curved surface shape when viewed in a cross section parallel to the plate thickness direction. Therefore, when the cosmetic material of the present invention is applied by the “eye-opening” method, the variation in the gaps between the decorative materials is not noticeable, and the appearance of the portion where the cosmetic material is applied is good. In addition, when the decorative material of the present invention is applied by the “butting” method, even if a gap is generated between the decorative materials, it is not noticeable, and the portion where the decorative material is applied looks good.

Decorative material of the present invention, whether we made a thermosetting resin decorative plates. In addition, at least a part of the end surface of the decorative material of the present invention has a curved surface shape when viewed in a cross section parallel to the plate thickness direction. Therefore, when the cosmetic material of the present invention is applied by the “eye-opening” method, the variation in the gaps between the decorative materials is not noticeable, and the appearance of the portion where the cosmetic material is applied is good. In addition, when the decorative material of the present invention is applied by the “butting” method, even if a gap is generated between the decorative materials, it is not noticeable, and the portion where the decorative material is applied looks good.

Claims (12)

  At least a part of the end surface has a curved surface shape when viewed in a cross section parallel to the plate thickness direction.   The decorative material according to claim 1, further comprising a resin composition containing a thermoplastic resin on a rear side of the end face. A decorative layer covering the surface of the decorative material;
An exposed portion where the resin composition is exposed on the surface of the decorative material;
With
The cosmetic material according to claim 2, wherein a discontinuous portion of the decorative layer is present on the exposed portion. The cosmetic material according to claim 2 or 3, wherein the following mathematical formula (1) is established for a thickness t from the end surface to the resin composition and a plate thickness T of the cosmetic material.
  The said resin composition contains an inorganic filler, The cosmetic material of any one of Claims 2-4 characterized by the above-mentioned.   6. The thermoplastic resin according to claim 2, wherein the thermoplastic resin is at least one selected from the group consisting of an ethylene vinyl acetate copolymer, a styrene resin, a polyolefin resin, and a polyamide resin. Cosmetic material according to item.   The decorative material according to any one of claims 1 to 6, wherein the decorative material is a laminate including a decorative layer and a core layer.   The decorative material according to any one of claims 1 to 7, wherein the decorative material is a non-combustible resin decorative board. It is a manufacturing method of the cosmetics given in any 1 paragraph of Claims 1-8,
In the decorative material before forming the curved surface shape, a step including cutting the range including the end surface from one surface in the plate thickness direction to the surface on the opposite side, leaving a remaining portion of a predetermined thickness. When,
Disposing the resin composition on the remaining portion;
Bending the remaining portion, and wrapping the resin composition with the remaining portion and the cut end surface generated by the cutting;
A method for producing a cosmetic material, comprising:   The method for manufacturing a decorative material according to claim 9, wherein the thickness of the remaining portion is thinner on the cutting end face side than on the tip end side of the remaining portion.   The method for manufacturing a decorative material according to claim 9 or 10, wherein an angle formed between the remaining portion and the cutting end surface before the bending is an acute angle. Wall surface,
The cosmetic material according to any one of claims 1 to 8, attached to the wall surface base,
A wall surface structure comprising: