JP3034228U - Decorative door - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To obtain a decorative door having a high joint design and excellent sound insulation and sound insulation. SOLUTION: As a skin material 11, 21, a sound insulation sheet 1 in which a resin sheet 110 containing iron powder and a decorative layer 125 are laminated.
00 is a decorative door D1 in which a sound-insulating metal plate 150 is attached to the front side of the metal plate 110 so that the decorative layer 125 side is on the outer side, and the foamed resin material R ₁ is foamed and filled inside. The shape of at least one of the joints between the end portions of the skin material is the concave groove 23 formed at one end and the concave groove 2 formed at the other end.
It is formed by the L-shaped bent piece 15a which is fitted in the No. 3 part. By stacking the resin sheet 110 containing iron powder on the skin material,
Although it is lightweight, it can improve sound insulation and sound insulation performance.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a decorative door, and in particular, in a decorative door in which a metal material is used as a skin material and a foamed resin material is filled inside and the metal plate is fixed, the sound insulation and soundproofing effect is excellent, and a combination of skin materials is used. The present invention relates to a decorative door that is easy to attach and can be firmly joined, thereby improving workability during manufacturing and improving the appearance of the joint between skin materials to improve the design value.

[0002]

[Prior art and problems to be solved]

 A decorative door is known in which a metal material is used as a skin material and a resin material having adhesiveness is filled therein as a filler for fixing the metal material to each other. Fig. 16 shows an example of this, in which both sides of the metal plate 1 which has been surface-decorated by pasting a film with a wood pattern are curved or bent to have a U-shaped or U-shaped cross section. The parts 2 and 2 are formed so as to face each other at a predetermined interval, and a flat plate-like laminated plate 3 having the same decoration is interposed between the both ends 2 and 2 of the metal plate 1. . If necessary, the both ends in the vertical direction may be closed with another material or may be folded by folding a piece (not shown) formed integrally with the metal plate 1 to close the skin. After the materials are screwed and joined by welding, etc., they are set in a molding die, and an adhesive resin material R such as urethane foam is injected into the internal space formed by the metal plates 1 and 3, and molded, At the same time as filling the inner spaces of the metal plates 1 and 3 forming the skin, the decorative door is formed.

FIG. 17 shows another example. In this example, two metal plates 4 and 5 whose both ends are bent in a U shape or a U shape are made to face each other. The two metal plates 4 and 5 are temporarily fixed by inserting the sandwiching members 6 for sandwiching the joint portion in the joined state. Then, as in the case of FIG. 16, both ends in the up-down direction are closed and joined, and then set in a molding die, and injection molding of the resin material R is performed in the same manner, and the metal plate 4 forming a skin, The decorative door is formed by filling the internal space formed by 5 and the sandwiching members 6, 6.

In the decorative door molded as described above, since the skin material is made of a metal material, it is possible to easily obtain an arbitrary outer shape by punching or bending a metal flat plate. Since the internal space is filled with a resin material such as foamed resin, it can be made lighter and has been widely used in recent years. In addition, a film or sheet having an arbitrary pattern can be easily attached to the surface of the metal plate that constitutes the skin material, and a door with high decorativeness can be easily obtained.

However, in the conventional decorative door of this type, the cut surface of the metal material as the skin material is stepped to the front surface side or the back surface side, for example, like both ends 2 and 2 of the metal plate 1 in FIG. Therefore, it has a defect of lacking in designability. In particular, when the surface decoration is a wood grain pattern, such a step does not occur when doors are made using natural wood, so wood grain that has a highly natural feeling due to printing etc. Even if a decorative sheet having a pattern could be prepared, it was difficult to give a high-class door look to the door due to the presence of the step.

As in the case of FIG. 17, in the case where two metal plates 4 and 5 are overlapped with their bent portions facing each other, no step appears at the joint 7. Since it looks like a straight line from the outside, it gives a visual impression as if two natural wood veneers were laminated, but in this case, a sandwiching member 6 for sandwiching the joint is required and the assembly is performed. It is difficult to attach.

For the purpose of eliminating the above-mentioned inconvenience, the present applicant has found that the metal plate as the skin material can be easily and surely joined, and in the assembled state. We have already proposed a decorative door that does not cause a step at the joint between the end portions of the metal plate (see Japanese Patent Laid-Open No. 8-13941). An object of the present invention is to further improve the decorative door according to the above proposal in terms of sound insulation and sound insulation.

[0008]

[Means for Solving the Problems]

 The decorative door according to the present invention, which solves the above problems and achieves the object, basically uses a sound insulating metal plate as a skin material, and a foamed resin material is filled inside to fix the skin material. In the decorative door, the shape of at least one of the joints of the end portions of the skin material is a concave groove formed at one end and the concave groove formed at the other end. In a decorative door formed by an L-shaped folded piece that fits in a groove, a sound insulating sheet in which a resin sheet containing iron powder and a decorative layer are laminated is used as the sound insulating metal plate, with the decorative layer side facing outward. It is characterized by using a sound insulating metal plate attached to the front side of the metal plate.

In a preferred aspect of the present invention, the joint portion is located only on the front surface side or the back surface side of the decorative door. The skin material constituting the decorative door of the present invention may be manufactured by bending one of the above sound insulating metal plates, and a plurality of sound insulating metal plates are subjected to the necessary bending process, and then these are processed. It may be constructed by appropriately assembling. At this time, it is a preferred embodiment that all the joints of the end portions of the sound insulating metal plate are formed by the concave groove and the L-shaped folded piece as described above. Other joining means may be used for the joining portion where it is not easily noticed when attached.

In addition, the manner in which the concave groove and the L-shaped bent piece are fitted in the joint portion may be a shape in which the L-shaped bent piece is simply fitted in the concave groove. A mode in which the piece is pressed and held from both sides may be adopted. Further, in a preferred embodiment of the present invention, an inwardly curved surface is formed at a portion where the cutting surface of the sound insulating metal plate is exposed to the outside after the skin material is assembled.

The overall shape of the decorative door according to the present invention and the method of attaching it to the fitting are arbitrary and are not limited. For example, a hinge may be attached to one side of one decorative door, and a lock or knob may be attached to the other side of the decorative door, and the door may be used as a so-called door. It may be freely connected and used as a so-called closet door (folding door). Further, the door may be constructed in the shape of a door including a so-called vertical frame and a horizontal frame or a waist frame, and a mirror plate or a waist mirror plate may be fitted therein.

The foamed resin material that is filled inside and adheres the sound-insulating metal plates together is lightweight, easy to inject, and excellent in sound insulation and sound insulation. A resin material in which is mixed is preferable, and for example, a resin such as polyurethane, polyolefin, polyvinyl chloride resin, or rubber is used, and a foaming agent is added thereto. As the polyurethane, those obtained by adding a polyvalent isocyanate such as tolylene diisocyanate or hexamethylene diisothocyanate to a polyol such as an acrylic polyol or a polyester polyol as a crosslinking agent are used. As the polyolefin, polyethylene, polypropylene, or an olefinic thermoplastic elastomer described later is used. As the polyvinyl chloride resin, polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, polyvinylidene chloride and the like are used. Examples of the foaming agent include organic pyrolytic foaming agents such as azodicarbonamide, azobisisobutyronitrile, and oxybisbenzenesulfonyl hydrazide, inorganic pyrolytic foaming agents such as sodium hydrogen carbonate and potassium hydrogen carbonate, and micro foams. It is possible to use a porous cellular foam by adding a capsule-type foaming agent or the like. Especially in the case of urethane foam resin, it is preferable from the viewpoints of adhesion with a sound insulating metal plate, lightness, heat insulation, and soundproofing. Examples of the metal plate used in the present invention include iron (including carbon steel, stainless steel, etc.), copper, aluminum, and the like.

In the present invention, as a skin material, as shown in FIGS. 13 to 15, a sound insulating sheet 100 in which a resin sheet 110 containing iron powder and a decorative layer 125 are laminated is arranged so that the decorative layer 125 side is the outside. A sound insulating metal plate 150 attached to the front side of the metal plate 140 is used.

For the decorative layer 125, a pattern layer is directly formed on the surface of the resin sheet 110 containing iron powder by transfer printing, gravure printing, silk screen printing, or a metal thin film layer is formed by vacuum vapor deposition, or It is formed by adhering the previously manufactured decorative sheet 120.

As the base material of the decorative sheet 120, high-quality paper, kraft paper, paper such as Japanese paper, woven cloth, non-woven cloth, synthetic resin sheet and the like can be used. Among these, the thermoplastic resin sheet is preferable from the viewpoints of printability, post-processing suitability such as drawing and bending, and surface physical properties such as water resistance and abrasion resistance. The thickness is about 12 to 500 μm. Examples of the thermoplastic resin include polyvinyl chloride resin, polyolefin resin, thermoplastic polyester resin, ethylene / vinyl alcohol copolymer resin, ABS (acrylonitrile / butadiene / styrene copolymer).

Examples of polyvinyl chloride resins include vinyl chloride homopolymers, vinyl chloride / vinyl acetate copolymers, ethylene / vinyl acetate copolymers, and chlorinated vinyl chloride resins. The degree of polymerization is about 500 to 2000, preferably about 10 to 30 parts by weight of a plasticizer is added. Examples of the plasticizer include dioctyl phthalate, butyl benzyl phthalate, dioctyl adipate, tricresyl phosphate, chlorinated paraffin and trimetic acid. In order to impart heat resistance, heat stabilizers such as epoxidized soybean oil, carboxylates such as lead, tin, lead, barium and calcium, metal soaps and various chelators are added in an amount of about 0.5 to 5 parts by weight.

Examples of the polyolefin resin include polyethylene, ethylene / propylene copolymer, ethylene / butene-1 copolymer, polypropylene, propylene / butene-1 copolymer, polybutene-1, butene-1, propylene / ethylene / 3. Terpolymer, butene-1, hexene-1, octene-1, terpolymer, polymethylpentene, olefinic thermoplastic elastomers described in JP-B-6-23278, or JP-A-6-16832. For example, the olefinic thermoplastic elastomers described in JP-A No. 1994-154, etc. are used. These resins may be used alone or in combination of two or more.

Although both a stretched sheet and an unstretched sheet can be used, the unstretched sheet is preferable in terms of moldability such as bending and drawing. These polyolefin resins can be used by themselves, but various rubbers are preferably added in order to impart flexibility, impact resistance and easy adhesiveness to the polyolefin resin. Examples of rubbers include diene rubbers, hydrogenated diene rubbers, and olefinic thermoplastic elastomers. Among them, hydrogenated diene rubbers are preferable.

The hydrogenated diene rubber is obtained by adding a hydrogen atom to at least a part of the double bond of a diene rubber molecule, and is used here as a modifier for a polyolefin resin. It has the role of suppressing crystallization of the polyolefin resin and improving flexibility and transparency. Generally, when a diene rubber is added to a polyolefin resin, the double bond of the diene rubber causes the weather resistance and heat resistance to be lower than that of the polyolefin resin with no diene rubber added. Since the double bond of the system rubber is saturated with hydrogen, the weather resistance and heat resistance of the polyolefin resin are not deteriorated and are good. Examples of the diene rubber include isoprene rubber, butadiene rubber, butyl rubber, propylene / butadiene rubber, acrylonitrile / butadiene rubber, acrylonitrile / isoprene rubber, and styrene / butadiene rubber. Of these, styrene-butadiene rubber is particularly preferable. The addition amount is about 1 to 90 parts by weight with respect to 100 parts by weight of the polyolefin resin. If the amount is less than 1 part by weight, elasticity, elongation and impact resistance due to addition of rubber are insufficient, and cracks and cracks are likely to occur during bending such as bending and drawing. On the other hand, if it exceeds 90 parts by weight, the elasticity and the elongation rate become too large, and the registration during printing becomes poor, which is not preferable.

The polyolefin resin sheet has a correlation between its dimensional shrinkage upon heating and cracking / rupture resistance during bending such as V-cut processing, and the dimensional shrinkage (30% after heating in an atmosphere of 100 ° C. for 30 minutes [(Dimension after heating)-(dimension before heating)] x 100 / (dimension before heating) = shrinkage rate by heating), in the case of a long strip-shaped sheet, the sheet longitudinal direction is -2 to + 7%, A range of -7 to + 2% in the sheet width direction is preferable. If the dimensional shrinkage ratio deviates from this range, the elongation ratio and the tear propagation resistance are greatly reduced with respect to the impact strength, and cracks are likely to occur during V-cut processing in which the sheet is bent by impact, which is not preferable. . Note that the allowable value of the heating dimensional shrinkage ratio differs between the longitudinal direction and the width direction of the sheet because the mechanical history of the material during sheet production and the impact force applied during sheet processing affect the longitudinal direction and width. This is because the direction is different.

This heating dimensional shrinkage ratio has a large correlation mainly with the stretching of the polyolefin resin sheet. The lower the draw ratio, the closer the heating dimension shrinkage rate becomes to zero. In the case of polypropylene, when the stretching ratio in the longitudinal direction of the sheet is 0 or more and less than 3 times and the stretching ratio in the sheet width direction is 0 or more and less than 3 times, the heating dimensional shrinkage ratio is generally within this range. However, in general, increasing the draw ratio improves the transparency and tensile strength of the sheet. Therefore, the draw ratio is set to an appropriate value within the above range depending on the required transparency and the degree of tensile strength. When the draw ratio exceeds 3, the heating dimensional shrinkage ratio deviates from this range.

The dimensional shrinkage upon heating also correlates with the presence or absence of side chains (branches) of the molecule and the stereoregularity (symmetry) of the molecule. The smaller the number of side chains of the molecule, the smaller the dimensional shrinkage upon heating. In the case of polyethylene, the low-pressure polyethylene has fewer side chains than the high-pressure polyethylene, and thus the dimensional shrinkage upon heating is small and good. Regarding the stereoregularity of molecules, the higher the regularity, the lower the dimensional shrinkage upon heating. In the case of a molecular structure in which a functional group such as a methyl group appears from the hydrocarbon skeleton (main chain) such as polypropylene, isotactic or syndiotactic have a smaller thermal dimensional shrinkage ratio and are better than atactic. is there.

If it is not stretched, the heating dimensional shrinkage ratio falls within the above range, and if it is stretched 3 times or more, the heating dimensional shrinkage ratio falls outside the above range in most cases. Therefore, when stretching, the stretching ratio is controlled so that the dimensional shrinkage by heating falls within the above range.

The thermoplastic polyester resin is typified by polyethylene terephthalate, polybutylene terephthalate, ethylene / terephthalate / isophthalate copolymer and the like, and the acid component includes terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid and the like. Is a copolymer obtained as an ester of both the aromatic dicarboxylic acid and an aliphatic diol such as ethylene glycol, diethylene glycol, butanediol or hexanediol as an alcohol component. Although both stretched and unstretched sheets can be used, the unstretched sheet is preferable from the viewpoint of suitability for embossing and suitability for molding such as V-cut processing.

FIG. 13 shows some examples of the sound insulation sheet 100 in which the decorative layer 125 is laminated on the iron powder-containing resin sheet 110. The decorative treatment is as shown in FIG. Coloring by adding pigment 111 to 120, printed pattern 121 on the surface of decorative sheet 120 as shown in FIG. 13 (b), embossing (heating press) as shown in FIG. 13 (c), hairline processing, etc. 13D, and furthermore, as shown in FIG. 13D, the concave portion of the uneven pattern 131 formed by embossing is formed by a known wiping method (see Japanese Patent Publication No. 58-14312). The coloring ink 141 can also be filled.

As the pigment to be added to the decorative sheet 120, inorganic pigments such as titanium white, zinc white, rouge, vermilion, ultramarine blue, cobalt blue, titanium yellow, yellow lead, carbon black, isoindolinone, Hansa yellow A, Organic pigments (or dyes) such as quinacridone, permanent red 4R, phthalocyanine blue, induslenbly RS, aniline black, metal pigments such as aluminum and brass, titanium dioxide coated mica, foils such as basic lead carbonate Examples include pearlescent pigments made of powder. Coloring by adding a pigment may be transparent or opaque (concealing). These are added or dispersed as powder or flaky foil pieces.

The printed pattern can be formed with ink (or paint) by a known printing method such as gravure printing, offset printing, silk screen printing, transfer printing from a transfer sheet. The pattern may be a wood pattern, a stone pattern, a cloth pattern, a skin pattern, a geometric figure, a character, a symbol, or a solid pattern. The pattern may be provided not only on the front surface of the decorative sheet 120 as shown, but also on the back surface, both front and back surfaces, or between layers. As the ink (or paint), chlorinated polyethylene, chlorinated polyolefin such as chlorinated polypropylene, polyester, polyurethane, acrylic, vinyl acetate, vinyl chloride / vinyl acetate copolymer, cellulose resin, etc. as binders. One type or a mixture of two or more types is used, and the known pigments listed above are added thereto.

When a polyolefin resin sheet is used as a base sheet for the decorative sheet 120 and is directly printed on it, it is advisable to use chlorinated polyolefin as a binder, or a two-component curing polyurethane composed of polyol and isocyanate, etc. However, if an easily-adhesive primer is appropriately selected and formed into a layer, sufficient adhesiveness can be obtained even if another binder is used.

The embossing is performed by heating and softening a thermoplastic resin sheet, pressing and shaping with an embossing plate, cooling and fixing, and a known sheet-fed or rotary embossing machine is used for the processing. Used. The shape of the uneven pattern is a wood grain board conduit groove, a stone board surface concave and convex (granite cleavage surface, etc.), a cloth surface texture, a satin finish, a grain, a hairline, and a line groove.

As the colored ink 141 used in the wiping process, the same one as described above can be used. However, from the viewpoint of abrasion resistance, it is preferable to use a two-component curing type urethane resin as a binder. Although not shown, a metal thin film may be provided on the surface of the base material. The metal thin film is made of a metal such as aluminum, chromium, gold, silver, and copper by a method such as vacuum deposition and sputtering. Alternatively, a combination of these may be used. This metal thin film may be provided on the entire surface or partially.

As the decorative sheet 120, as illustrated in FIG. 14, one obtained by laminating two or more layers of any of the above sheets may be used. For example, a sheet F having a structure in which a thermoplastic polyester resin sheet 120 'is laminated on the surface of a polyvinyl chloride resin sheet (120), mirror surface smoothness of the surface, and moldability are preferable.

A heat stabilizer, a filler, a flame retardant, an ultraviolet absorber, and the like are added to these decorative sheets 120, if necessary. As the filler, powders of calcium carbonate, barium sulfate, clay, talc, etc. are used, and an appropriate amount of these is added. As a typical blending of a flame retardant, it is general to add 1 to 5 parts by weight of ammonium trioxide or 10 to 150 parts by weight of aluminum hydroxide or magnesium hydroxide. Further, particularly in the case of polyvinyl chloride resin, it is effective to replace a part or all of the plasticizer with a flame retardant plasticizer such as a phosphoric acid ester-based plasticizer or a chlorinated paraffin-based plasticizer.

In order to impart good weather resistance (light resistance) to the resin, an ultraviolet absorber and / or a light stabilizer can be added, and the addition amount of both the ultraviolet absorber and the light stabilizer is usually It is about 0.5 to 10% by weight, but it is generally preferable to use an ultraviolet absorber and a light stabilizer together. As the ultraviolet absorber, an organic substance such as benzotriazole, benzophenone, salicylate or the like, or an inorganic substance such as fine particle zinc oxide having a diameter of 0.2 μm or less, cerium oxide or titanium oxide can be used. As the light stabilizer, a radical scavenger such as a hindered amine radical scavenger such as bis- (2,2,6,6-tetramethyl-4-piperidinyl) sebacate or a piperidine radical scavenger can be used. .

The base resin of the iron powder-containing resin sheet 110 used in the present invention may be the same as the base resin used in the decorative sheet 120 described above, and various additives used for the purpose of improving physical properties and the like. May be the same. Further, for the same reason as described for the decorative sheet 120, it is particularly effective to use polyvinyl chloride resin or polyolefin resin as the resin of the iron powder-containing resin sheet.

Examples of the iron powder contained include pure iron, carbon steel, and iron oxide (Fe ₂ O ₃ , FeO, Fe ₃ O ₄ ). The particle size is about 0.5 to 50 μm. The addition amount is preferably 100 to 900 parts by weight of iron powder with respect to 100 parts by weight of the base resin. As described above, as the binder resin in which the iron powder is kneaded, it is preferable to use polyvinyl chloride resin or polyolefin resin. In particular, the following materials are preferable from the viewpoint of soundproofness, sound insulation, and ability to follow drawing and bending of metal plates.

Polyvinyl chloride resin having a degree of polymerization of 500 to 2000 and a plasticizer part number of 20 to 100 parts by weight in terms of dioctyl phthalate. Boiled heptane-soluble polypropylene 10 having (A) a number average molecular weight Mn of 25,000 or more and a ratio Mw / Mn ≦ 7 of the weight average molecular weight Mw and the number average molecular weight Mn described in JP-B-6-23278. A soft polypropylene comprising a mixture of ˜90% by weight and (B) 90 to 10% by weight of a boiling heptane-insoluble polypropylene (B) having a melt index of 0.1 to 4 g / 10 min.

As described in JP-B-53-21021, (A) an olefin polymer (crystalline polymer) such as polyethylene, polypropylene and polymethylpentene is used as a hard segment, and (B) partially cross-linked. Monoolefin copolymer rubbers such as ethylene / propylene copolymer rubber and unsaturated ethylene / propylene / non-co-diene terpolymer rubber are used as soft segments, and these are uniformly blended and mixed to form an olefin. Elastomer. Monoolefin rubber / olefin copolymer = 50/50 to 90/10 (weight ratio) are mixed.

As described in JP-B-53-34210, (B) an uncrosslinked monoolefin copolymer rubber (soft segment), (A) an olefin copolymer (crystalline, hard segment) and a crosslinking agent. An olefin-based elastomer obtained by mixing and heating and dynamically cross-linking while applying shear stress. Mono-olefin rubber / olefin polymer = 60/40 to 80/20 (weight ratio) are mixed.

As described in JP-B-56-15741, the molecular weight is reduced by mixing and heating with a peroxide such as (A) isotactic polypropylene, propylene / ethylene copolymer, propylene / butene-1 copolymer, Peroxide that increases fluidity Decomposable olefin copolymer (hard segment), (B) Ethylene / propylene copolymer rubber, ethylene / propylene / non-co-diene terpolymer rubber, etc. Crosslinking reduces the fluidity by crosslinking with a peroxide crosslinkable monoolefin copolymer rubber (soft segment), (C) polyisobutylene, butyl rubber, etc. Even if heated, it does not crosslink and the fluidity does not change. Cross-linked hydrocarbon rubber (soft segment and fluidity modifier), and (D ) An olefin elastomer obtained by mixing a paraffinic, naphthene-based, aromatic, or other mineral oil-based softening agent and dynamically heat-treating it in the presence of an organic peroxide. 90 to 40 parts by weight of (A), 10 to 60 parts by weight of (B), and 5 to 100 parts by weight of (C) and (D) to 100 parts by weight of (A) + (B). Mixing ratio. An olefinic thermoplastic elastomer composed of an ethylene / styrene / butylene copolymer as described in JP-A-2-139232.

To laminate the polyvinyl chloride resin sheet or polyolefin resin sheet containing iron powder and the cosmetic sheet (decorative layer), a method of utilizing ultrasonic waves or dielectric heating, a two-component curing type polyurethane adhesive, etc. There is a method by dry lamination using, a method by melt extrusion lamination, a method by hot pressing and the like.

In the present invention, the sound insulation sheet 100 in which the resin sheet 110 containing iron powder and the decorative layer 125 are laminated is attached to the front side of the metal plate 140 so that the decorative layer 125 side is the outer side. The plate 150 is constructed. FIG. 15 is a cross-sectional view showing an example of the sound insulating metal plate 150 to which the sound insulating sheet 100 is attached. As can be seen from the drawing, the decorative sheet 125 is placed on the outer side with the adhesive 130 between the metal sheets. It is attached to the plate 140. As a material of the metal plate 140, iron, aluminum, copper, titanium or the like can be used. Examples of iron include pure iron, carbon steel, and stainless steel. The thickness of the metal plate used is about 0.3 to 10 mm, and zinc plating, surface treatment such as chromic acid treatment, and anticorrosion treatment are performed as necessary.

The adhesive 130 used for attaching the sound insulation sheet 100 to the metal plate 140 is a two-component curing polyurethane type (isocyanate curing), epoxy type (curing with amine etc.), acrylic type, polyester type ( Isocyanate, organic sulfonate, cured with organic peroxide, etc.), polyethylene, polypropylene and other polyolefin type, and rubber type.

Polyurethane is a polyurethane having a polyol (polyhydric alcohol) as a main agent and an isocyanate as a crosslinking agent (curing agent). The polyol has two or more hydroxyl groups in the molecule and, for example, polyethylene glycol, propylene glycol, acrylic polyol, polyester polyol, polyether polyol and the like are used.

As the isocyanate, a polyvalent isocyanate having two or more isocyanate groups in the molecule is used. For example, aromatic isocyanate such as 2-4 tolylene diisocyanate, xylene diisocyanate, 4-4 diphenylmethane diisocyanate, or aliphatic isocyanate such as hexamethylene diisocyanate, isophorone diisocyanate, hydrogenated tolylene diisocyanate and hydrogenated diphenylmethane diisocyanate. Is an alicyclic isocyanate.

Examples of acrylic include methyl poly (meth) acrylate, ethyl poly (meth) acrylate, propyl poly (meth) acrylate, butyl poly (meth) acrylate, methyl (meth) acrylate / (meth) acrylic Butyl acid acid copolymer, ethyl (meth) acrylate / butyl (meth) acrylate copolymer, ethylene / methyl (meth) acrylate copolymer, styrene / methyl (meth) acrylate copolymer, etc. An acrylic resin composed of a homopolymer or a copolymer containing a (meth) acrylic acid ester (provided that the term "(meth) acrylic" means acrylic or methacrylic and the same applies hereinafter).

In order to further improve the adhesion between the skin material of the decorative door made of the sound insulating metal plate obtained as described above and the foamed resin filling the door, the back surface of the metal plate 140 (the sound insulating sheet) A non-woven fabric can be bonded to the opposite side). The material of the non-woven fabric may be vinylon, polyester or the like. The adhesive may be selected from the same adhesives as those for the metal plate and the sound insulating sheet.

In the decorative door according to the present invention, the joint portion of the sound insulating metal plate 150, which is the skin material, basically has the concave groove formed at one end and the joint formed at the other end. Since it is formed of an L-shaped bent piece that fits into the concave groove, the cut surface of the sound-insulating metal plate is not exposed on the surface and no step is formed there. This dramatically improves the design as a decorative door and eliminates the risk of injury on the cut surface. Furthermore, even when a plurality of sound-insulating metal plates are assembled to form the skin material, it is possible to assemble all the sound-insulating metal plates to be assembled from above rather than from the lateral direction. Yes, it is extremely easy to assemble. Also, once assembled, it hardly separates, and it becomes easy to handle afterwards, such as setting in the molding die.

Further, since the foaming resin filled in the inner space of the skin material also penetrates and foams in the space between the concave groove and the L-shaped folded piece fitted therein, the respective members are in close contact with each other. It is securely bonded in the state. As a result, it becomes structurally strong and, at the same time, the design of the joint is further improved.

Further, the sound insulating sheet 100 (substantially, the iron powder-containing resin sheet 110) forming the sound insulating metal plate is excellent in sound insulating property of blocking and attenuating an external sound wave. Compared to a sound insulation sheet using a sheet, it is lighter with the same sound insulation performance, and it is thinner than the porous foamed resin sheet with the same sound insulation performance, so it is not bulky and the strength of the sheet itself. Will also be higher. Further, the sound-insulating metal plate 150 in which the resin sheet 110 containing iron powder is laminated has excellent sound-insulating and vibration-damping performance that suppresses sound wave radiation when it is excited. The sound insulation and soundproofing of the decorative door as a whole are greatly improved. Further, since the decorative layer 125 is applied to the surface of the iron powder-containing resin sheet 110, the design is also good.

[0050]

[Embodiment of the invention]

 Hereinafter, the decorative door according to the present invention will be described in more detail with reference to embodiments. First, examples and comparative examples of the sound insulating sheet 100 will be shown.

Example 1 With respect to 100 parts by weight of a polyvinyl chloride resin having a degree of polymerization of 1200, 500 parts by weight of iron oxide (Fe ₃ O ₄ ) powder having a particle diameter of 30 μm and 60 parts of a plasticizer made of dioctyl phthalate were used. By weight, a composition containing 3 parts by weight of a calcium-zinc heat stabilizer was formed into a film to obtain a resin sheet 110 containing iron powder having a thickness of 500 μm. On the other hand, with respect to 100 parts by weight of polyvinyl chloride resin having a degree of polymerization of 1200, 28 parts by weight of dioctyl phthalate plasticizer, 10 parts by weight of calcium carbonate powder, 2 parts by weight of barium-zinc heat stabilizer, and heat stability of epoxy soybean oil heat stabilizer. A sheet (decorative sheet 120) is made by forming a composition comprising 2 parts by weight of the agent and 6 parts by weight of titanium dioxide white pigment powder, and a wood pattern (printed pattern 121) is formed on the surface by gravure printing to make up It was layer 125. Then, the resin sheet 110 containing iron powder and the decorative layer 125 were laminated so that the wood grain pattern faces outward, and were pressed and fused in a heat-softened state to obtain the sound insulating sheet 100.

Next, the sound insulating sheet 100 and a galvanized steel sheet (metal plate 140) having a thickness of 1 mm are interposed with a two-component curing polyurethane adhesive (main agent: acrylic polyol, curing agent: tolylene diisocyanate) 130 therebetween. A sound-insulating metal plate 150 was manufactured by adhering the same. The wood grain pattern was designed to be the outer surface.

Comparative Example 1 A sound insulating metal plate was produced in the same manner as in Example 1 except that the resin sheet 110 containing iron powder was replaced with a lead plate having a thickness of 300 μm.

(Evaluation) The sound wave transmission loss amount D [dB] of the decorative layer 125 portion of the sound-insulating metal plate of Example 1 and Comparative Example 1 was measured and is as shown in Table 1. The results are almost the same. It was.

[0055]

[Table 1]

Next, in order to evaluate the soundproofness, the sound insulating metal plate of Example 1 and the sound insulating metal plate of Comparative Example 1 were prepared, and both sound insulating metal plates were hit and excited by free vibration. And compared the loudness of the radiated sound. In order to evaluate the sound insulation, we made a 1 m cubic box with both sound insulation metal plates and heard the sound outside the box inside the box under the same conditions (60 horn (frequency 1 kHz) without the box). It was performed in the venue) and the loudness was compared. The evaluation was performed by hearing the same person. As a result, the sound insulation property and the sound insulation property of Example 1 were at the same level as Comparative Example 1. Further, the weight per unit area of both decorative sheets was measured, and it was 44% as compared with Comparative Example 1.

Conventionally, as a sound insulating sheet, one using a lead plate (sheet) as described in Japanese Utility Model Publication No. 61-14436 has been known. In this type of sound insulation sheet, the mass law of the sound insulation material, that is, the transmission loss amount D [dB] and the surface density ρ [kg / m ² ] of the sound insulation material have a proportional relationship (D = 14.3 Log ₁₀ ρ + 12.7). Designed on the basis of possession, lead has a large specific gravity of 11.3. However, on the other hand, the sheet becomes heavy, which requires a lot of labor for manufacturing, transportation, and construction, and if it is not firmly adhered when it is fixed to the wall surface, it will easily fall off due to its own weight over time. was there. Sound insulation sheets made of porous materials such as rock wool board, glass fiber board, and foamed resin sheet are also known, but this kind of sound insulation sheet is lightweight but thick and bulky. Since it is tight and soft, it has problems in strength and wear resistance.

As shown in the above-mentioned embodiment, the sound insulating sheet and the sound insulating metal plate in which the sound insulating sheet is laminated in the present invention are lighter in weight than the method using the mass law and use the porous material. It can be seen that a decorative door with excellent sound insulation and sound insulation can be obtained when it is used as a skin material for a decorative door because it is thinner and stronger than other products and has excellent handleability.

Next, a specific embodiment of the decorative door using the sound insulating metal plate 150 according to the present invention as a part or the whole of the skin will be described. 1 to 7 show an embodiment of a decorative door according to the present invention, which is an example of a frame door having an end plate 30. This decorative door D1 has front and back end plates 30, 30 fitted into a frame formed by left and right vertical frames 10 and 10 of the same shape and upper and lower horizontal frames 20 and 20 of the same shape. A skin part as a door is formed by filling the interior space of the skin part with a foamed resin material R ₁ by a conventionally known appropriate method such as urethane foaming. The hinges, locks, knobs, etc. (not shown) are attached to the vertical frames 10 and 10. In this embodiment, each of the vertical frame 10, the horizontal frame 20 and the end plate 30 is composed of the sound insulating metal plate 150 as shown in the above embodiment, to which a decorative layer having a wood grain print is attached. As described later, it is formed by punching a prototype from a metal plate and performing necessary bending.

In this embodiment, the vertical frame 10 has the structure shown in FIGS. That is, the vertical frame 10 includes a side surface part 11 which is a so-called wood mouth part of the decorative door D1, a vertical frame front surface part 12 and a vertical frame back surface part 15 which are bent from the side surface part 11 in a continuous U-shape. Upper and lower end face portions 13 and 14 that are bent inward in a continuous manner from the vertical end portions of the vertical frame front surface portion 12, and similarly inward from the vertical end portions of the vertical frame rear surface portion 15 in a continuous state. The upper and lower end surface portions 16 and 17 that are bent to form a long rectangular parallelepiped having an open internal space on one side in the longitudinal direction (right side in the figure), and the surface of the vertical frame described above. L-shaped bent pieces 12a and 15a bent inward continuously are provided at the open ends of the portion 12 and the vertical frame back surface portion 15 over their entire lengths.

The horizontal frame 20 is basically formed by facing two horizontal frame constituent members 20A shown in FIGS. 6 and 7. That is, the horizontal frame constituent member 20A includes the vertical frame front surface part 12 and the vertical frame back surface part 15 of the vertical frame 10 together with the front surface part 21 that constitutes a part of the front surface or the rear surface of the decorative door D1, and the front surface part 21. The horizontal frame end face portion 22 bent inward from the lower end portion in a continuous state, and the rising portions 23, 23 bent inward from the left and right side end portions of the surface portion 21 in a continuous state Further, the leading ends of the rising portions 23, 23 are bent outward in a curved shape and extend downward. Thereby, the concave grooves 24, 24 are formed therein. In addition, 25 is a notch used when casting the resin.

The height of the horizontal frame end face portion 22 of the horizontal frame constituent member 20A is the same as the height of the side surface portion 11 of the vertical frame 10 when the two are arranged so as to face each other as shown in FIG. The height of the rising portions 23, 23 is formed by bending the open ends of the vertical frame front surface portion 12 and the vertical frame back surface portion 15 of the vertical frame 10. The heights of the L-shaped bent pieces 12a, 15a are substantially the same as each other so that the L-shaped bent pieces 12a, 15a can be fitted into the concave grooves 24, 24.

The mirror plate 30 is composed of a mirror plate body portion 31 and locking and decorative members 32 attached to the four circumferences thereof. The vertical frame 10, the horizontal frame 20 and the end plate 30 are assembled in the following manner. Two vertical frames 10 and 10 are arranged with the open side surfaces facing each other, and the L-shaped folded pieces 15a and 15a formed at the open side end of the vertical frame back surface portion 15 are configured with horizontal frames. The concave grooves 24, 24 formed in the member 20A are locked. In that state, the horizontal frame member 20A is slid along the L-shaped folded pieces 15a, 15a, and the upper and lower end face parts 16, 16, 17 and 17 of the vertical frame and the horizontal frame member 20A. Set it so that it is flush with the frame end face portion 22.

Next, another horizontal frame member 20 A is set so that its surface portion 21 becomes the same surface as the vertical frame surface portion 12 of the vertical frame 10, and the space between the two vertical frames 10 and 10 is adjusted from above. The L-shaped folded pieces 12a, 12a formed on the vertical frame surface portion 12 are inserted into the concave grooves 24, 24, and then the upper and lower end surface portions 13 of the vertical frame are inserted in the same manner as described above. , 13 and 16, 16 and the horizontal frame end face portion 22 of the horizontal frame constituent member 20A are set on the same plane.

As a result, as shown in FIG. 1, a rectangular outer frame having a space inside is formed, and the end plate 30 is fitted into the inner frame portion from the front and back sides, so that the outer skin portion as the decorative door D1 is formed. Is completed. The skin portion thus formed is set in a molding die, and, for example, a urethane foam resin is injected or foamed as the foamed resin material R ₁ . The foamed resin material R ₁ exerts a pressure from the inside of the skin material to support the skin material, thereby adhering and fixing the skin material. 2 and 3 are cross-sections of the horizontal frame 20 portion and the vertical frame 10 substantially in the center in the length direction after the resin is injected.

In the decorative door according to this embodiment, it is extremely easy to join the end portions of the sound-insulating metal plates that form the skin portion to each other as described above, because each member can be assembled from above. The binding can be done at. Also, as is clear from FIG. 1, all the joints appear on the front surface and the back surface of the door and do not exist on the side surface, and as shown in FIG. The L-shaped bent pieces 12a and 15a are fitted in the concave groove 24, and the cut end of the soundproof metal plate is not exposed to the outside. As a result, the design of the joint between the sound-insulating metal plates is significantly improved, and the cut end can be prevented from being injured.

In addition, in the joint portion where the L-shaped bent piece is fitted in the concave groove formed, a gap S is formed to some extent due to the structure, and the foamed resin material R ₁ enters the gap. To do. Due to the internal pressure generated by the foaming, the L-shaped folded pieces 12a, 15a and the rising portions 23, 23 are pressed in the direction in which they are in close contact with each other, and the gap between the two is almost eliminated, and the appearance is like that of natural wood. Cause As a result, the appearance of the joint has a higher design.

Further, the sound-insulating metal plate as the skin material has a structure in which a sound-insulating sheet obtained by stacking a resin sheet containing iron powder and a decorative layer is attached to the front side of the metal plate with the decorative layer side facing outward. In addition, the synergistic effect with the foam resin filled inside makes it possible to obtain a decorative door with excellent sound insulation and sound insulation.

8 and 9 show another embodiment of the decorative door according to the present invention. In this example, the skin portion of the decorative door D2 includes a first skin material 50 formed by curving both side portions into a substantially U-shaped cross section so that both end portions face each other with a space therebetween. The first skin material 50 is composed of a second skin material 60 made of a sound-insulating metal plate interposed between opposite ends of the first skin material 50. One end (the right end in the figure) of the first skin material 50 is directed inward over its entire length, as in the leading end portions of the rising portions 23, 23 of the horizontal frame constituent member 20A of the above-described embodiment. And is bent into a curved shape to form a concave groove 54 therein. The other end (the left end in the figure) is a flat part 55. Further, the upper and lower ends of the first skin material 50 are integrally formed with a folded piece 57 having a shape capable of covering the upper and lower end surfaces.

The second skin material 60 is formed at one end with an L-shaped segment 61 that fits into the concave groove 54 formed in the first skin material 50 over its entire length, and the other end thereof. An L-shaped leg portion 62 having a length capable of maintaining the thickness of the decorative door D2 when inserted into the U-shaped curved portion of the first skin material 50 is formed therein. A proper number of through holes 63 are formed in the L-shaped leg portion 62.

The assembling of the first skin material 50 and the second skin material 60 is performed as follows. The first skin material 50 is arranged with the bent end side facing up as shown, and the second skin material 60 is attached to the L-shaped leg portion 62 side of the first skin material 50 from above. After being inserted into the flat portion 55 side and pushed in somewhat, the other end portion side is pushed down, and the L-shaped segment 61 is fitted into the concave groove 54 formed in the first skin material 50. As a result, a skin portion having a space inside is formed as shown in FIG.

As in the case of the decorative door D1 shown in FIGS. 1 to 7, it is necessary to set the skin portion thus assembled in the molding die and inject the foamed resin material R ₁ into the internal space. Depending on the situation, foam urethane. At this time, the L-shaped leg portion 62 also acts to define the thickness of the decorative door D2. Further, the injected resin can pass through the through hole 63 formed in the L-shaped leg portion 62 and also penetrate into the curved side portion of the first skin material 50, so that the entire internal space can be obtained. Is filled with resin.

In the decorative door of this embodiment, both side surface parts are formed in a curved shape as shown in the drawing, and all the joints thereof are exposed on the back surface part of the door and not on the front surface side and side surface parts. Therefore, it can be used particularly effectively as a so-called closet door (folding door). At that time, in the figure, the cut end surface of the sound insulating metal plate is exposed at the joint at the left end, but by attaching the side side to the fitting as a pivotal support, the exposed part of the cut end surface is exposed. It is almost invisible and does not cause any particular inconvenience in the design of the decorative door.

It should be noted that although the other joint has a greater chance of being exposed to the human eye, the joint has a mode in which the L-shaped bent piece 61 is fitted in the recessed groove 54, as shown in FIGS. It will be understood that, as described in the embodiment of the present invention, the external appearance of the joint has high designability. Further, also in this embodiment, the first and second skin materials, which are the sound-insulating metal plates forming the skin portion, can be assembled from above, and the assembly is extremely easy.

In the decorative door of this aspect, as shown in FIG. 8, the cut end faces 58, 58 having the curvature of the metal material and the cut end faces of the slice 57 are exposed at the curved side surfaces at the upper and lower ends. As a result, there is a risk of injury if a person touches it as well as deterioration of design. Therefore, as shown in an enlarged view in FIG. 9, it is effective to make the cut end surfaces 58, 58 of that portion and the cut end surface of the slice 57 inward have some curvature. By doing so, the cut end face 58 and the like can be housed inside the door and not exposed on the outer surface. This curvature may be performed at the same time when the sound insulating metal plate is bent, or may be formed separately after the bending.

FIG. 10 shows another embodiment of the decorative door according to the present invention. In this example, in the skin portion of the decorative door D3, one side is a first bent part 71 having a substantially U-shaped cross section, and the other side is more than the first bent part 71. A first skin material 70 made of a sound-insulating metal plate having a second bent portion 72 having a low height and a substantially U-shaped cross section, and a first skin material 70 interposed between the opposite side surfaces of the first skin material 70. And a second skin material 80 made of a sound insulating metal plate.

A concave groove 73 is formed in the vertical direction in the figure over the entire length at the tip of the first bent portion 71 of the first skin material 70, and the tip of the second bent portion 72 is formed. In the figure, a lateral concave groove 74 is formed over the entire length. On the other hand, the second skin material 80 is formed with a first L-shaped segment 81 which is fitted into the vertical groove 73 formed in the first skin material 70 over the entire length of one end portion. The other end side is a bent portion 82 having a substantially U-shaped cross section as shown in the drawing, and its tip is formed in a lateral groove 74 formed at the tip of the second bent portion 72. It is a second L-shaped piece 83 to be fitted.

The first skin material 70 and the second skin material 80 are a lateral concave groove formed by forming the second L-shaped section 83 of the second skin material 80 in the first skin material 70. After laterally engaging the inside of 74, the first L-shaped segment 81 is inserted into the first L-shaped segment 81 of the first skin material 70, so that the first L-shaped segment 81 can be moved up and down as shown in FIG. They are integrated with the ends open to form the main part of the decorative door.

Next, by inserting the terminal material 90 having a U-shaped cross-section into the upper and lower open portions of the main body portion, the skin portion of the decorative door D3 is configured. In the case of the above-described embodiment, Similarly to the above, the foamed resin material is injected into the internal space. When the terminal material 90 is inserted, by applying the adhesive 91 to the upper and lower surfaces of the terminal material 90 in advance, the terminal material 90 can be securely fixed to the inner surface of the main body.

The decorative door of this aspect is not only easy to assemble as a whole, but also requires no bending work at the upper and lower ends like the decorative door shown in FIGS. 8 and 9, and is easy to manufacture. There is an advantage to be. Further, the main body portion and the terminal material 90 can be securely fixed with an adhesive, and the terminal material 90 is not pushed out by the pressure at the time of filling the foamed resin material and can be stably manufactured. As the material of the terminal material 90, a synthetic resin material may be used in addition to the same sound-insulating metal plate as the skin materials 70 and 80.

The above description is only a description of some embodiments of the decorative door according to the present invention, and there are many other modifications. For example, in the decorative door of the embodiment shown in FIGS. 1 to 7, it is not always necessary to use the end plate 30, and the horizontal frame constituting member 20A is set to be long, and the surface of the decorative door is defined by the horizontal frame constituting member 20A. Also, the entire back surface may be covered. Further, the horizontal frame constituent member 20A, that is, the horizontal frame 20 is not essential, and the vertical frame front surface portion 12 and the vertical frame back surface portion 15 of the vertical frame 10 have a wider width, and one of the vertical frame 10 has the above-mentioned Forming a concave groove, forming the L-shaped bent piece at the end of the other vertical frame 10 on the opposite side, and joining the two to form the decorative door D1 only with the vertical frame 10. Is also possible. It will be understood that the object of the present invention can be achieved even with such an aspect. In addition, a mode in which a third horizontal frame is further formed between the upper and lower two horizontal frames in FIG. 1 and the end plates are also two upper and lower frames is also possible.

Further, in the decorative door shown in FIGS. 8 and 9, the L-shaped bent piece 61 is fitted into the concave groove 54 only in one of the joint portions of the first and second skin materials. Of course, it is also possible to use the joining mode in which the L-shaped bent piece is fitted in the concave groove in the other joining portion as well. Further, it is possible to form the entire skin material only by the first skin material without using the second skin material 60. Further, in any of the embodiments, the side on which the concave groove is formed and the side on which the L-shaped folded piece that fits therein is formed can be the opposite of those shown in the drawings. The purpose is reached.

Furthermore, the manner in which the concave groove and the L-shaped bent piece are fitted is not limited to the manner in which the L-shaped bent piece is simply fitted in the concave groove as in the example shown in FIGS. Alternatively, the recessed groove may press and hold the fitted L-shaped bent piece from both sides. FIG. 11 shows an example thereof. In this example, at least a portion of the skin material forming the concave groove 24x is made of an elastic material, and the width of the fitting inlet of the concave groove 24x is fitted therein. It is configured to be narrower than the thickness of the L-shaped bent piece 15x. Therefore, as shown in FIG. 11b, when the L-shaped bent piece 15x is fitted in the concave groove 24x, the L-shaped bent piece 15x is held in a pressed state by the concave groove forming members from both sides.

By doing so, the holding force increases, and due to the expansion force from the inside to the outside of the skin material generated during the processing, particularly when the cavity inside the skin material is filled with the foamed resin to foam. It is possible to surely avoid shifting or separation. It should be noted that at least the concave groove 24x portion may be formed of the elastic material, and other portions of the skin material may be formed of an elastic body depending on the physical properties required for the end plate or the frame. Well, it need not be an elastic body. Alternatively, the entire metal skin material may be made of a material whose elastic modulus changes by heat treatment (for example, steel material), and only the portion corresponding to the concave groove may be heat-treated to have appropriate elasticity. The elastic material is preferably iron such as carbon steel, metal such as copper, brass and phosphor bronze, but it is also possible to use synthetic resin only in the portion corresponding to the concave groove. It is also possible to use as a raw material a plate member in which and are joined by appropriate means so as to have such a shape.

FIG. 12 is a cross-sectional view showing some other examples of the cross-sectional shape of the concave groove, and it is understood that the L-shaped bent piece 15x can be pressed and held from both sides in any case. Let's go. Of these cross-sectional shapes, the one shown in FIG. 11 and the one shown in FIG. 12d have the guide portion into the concave groove of the L-shaped bent piece 15x, so that the L-shaped bent piece 15x can be easily fitted. Has the advantage of becoming.

[0086]

[Effect of the invention]

 According to the decorative door of the present invention, the assembling of the skin material is facilitated, and the cut surface of the sound insulating metal plate is not exposed on the surface at the joint portion of the sound insulating metal plate which is the skin material. The design as a door is greatly improved, and the cut edge can be prevented from being injured. Furthermore, once assembled, it hardly separates, and it becomes easy to handle afterwards, such as setting in the molding die.

Further, since the foamed resin material R ₁ filling the inner space of the skin material penetrates into the space between the concave groove and the L-shaped folded piece fitted therein and foams, each member is Adhesion is ensured in close contact, and the structure becomes strong, while at the same time the design of the joint is further improved. The foamed resin material R ₁ also contributes to sound insulation and sound insulation.

Further, the resin sheet containing iron powder, which constitutes the sound-insulating metal plate, is excellent in sound-insulating property of blocking and attenuating external sound waves, and has the same sound-insulating property as compared with the sound-insulating sheet using the conventional lead sheet. The performance is lighter, and it is thinner than the porous foamed resin sheet with the same sound insulation performance, so it is not bulky and the strength of the sheet itself is high. Furthermore, the sound-insulating metal plate obtained by laminating the resin sheet containing the iron powder has good soundproofing and sound insulation due to the effect of the resin sheet containing the iron powder and the synergistic effect with the foamed resin material. Furthermore, it is excellent in the ability to suppress sound wave radiation when it is excited, and greatly improves the sound insulation and sound insulation of the decorative door as a whole.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment of a decorative door according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a perspective view showing a vertical frame.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a perspective view showing a horizontal frame constituent member.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

FIG. 8 is a view for explaining another embodiment of the decorative door according to the present invention.

FIG. 9 is an enlarged explanatory view of a part of upper and lower ends.

FIG. 10 is a view for explaining still another embodiment of the decorative door according to the present invention.

FIG. 11 is a view showing another fitting state of the concave groove and the L-shaped bent piece.

FIG. 12 is a cross-sectional view showing another form of the concave groove.

FIG. 13 is a cross-sectional view showing some examples of a sound insulating sheet constituting a sound insulating metal plate used in the present invention.

FIG. 14 is a cross-sectional view showing still another form of the sound insulating metal plate.

FIG. 15 is a sectional view illustrating a sound insulating metal plate used in the present invention.

FIG. 16 is a diagram illustrating an example of a conventional decorative door.

FIG. 17 is a diagram illustrating another example of a conventional decorative door.

[Explanation of symbols]

D1, D2, D3 ... decorative door, 10 ... vertical frame, 20 ... horizontal frame,
30 ... End plate, 12a, 15a, 61 ... L-shaped folded piece, 2
4, 54 ... Recessed groove, R ₁ ... Foamed resin material, 100 ... Sound insulating metal plate, 110 ... Iron powder-containing resin sheet, 120, 12
0 '... Decorative sheet, 125 ... Decorative layer, 121 ... Printed pattern, 130 ... Adhesive, 131 ... Uneven pattern, 141 ... Coloring ink by wiping

Claims (5)

[Utility model registration claims] 1. A decorative door in which a sound-insulating metal plate is used as a skin material, and a foamed resin material is filled inside and the skin material is fixed, wherein the end portions of the skin material are joined to each other. In the decorative door, the shape of at least one joint is formed by an indented groove formed at one end and an L-shaped bent piece fitted in the indented groove formed at the other end. A decorative material characterized by using a sound-insulating metal plate in which a sound-insulating sheet obtained by laminating a resin sheet containing iron powder and a decorative layer is attached to the front side of the metal plate with the decorative layer side facing outward as the conductive metal plate. door. 2. The foamed resin material filled in the inside is
The decorative door according to claim 1, which is a urethane foam resin. 3. The resin of the resin sheet containing iron powder,
The decorative door according to claim 1 or 2, wherein a polyvinyl chloride resin or a polyolefin resin is used. 4. The resin of the resin sheet containing iron powder,
The decorative door according to claim 3, wherein a polyvinyl chloride resin having a polymerization degree of 500 to 2000 and a plasticizer part number of 20 to 100 parts by weight in terms of dioctyl phthalate is used. 5. The resin of the resin sheet containing iron powder,
The decorative door according to claim 3, wherein an olefinic thermoplastic elastomer is used.