JP7288584B2 - Fittings - Google Patents

Description

The present invention relates to fittings.

Conventionally, a structure including a plate-like body having a design layer is applied to fittings. For example, a plate-like body having a mirror as a design layer is used as fittings. If the plate-like body is used with the design layer exposed from the end portion, the design layer deteriorates. Patent Literature 1 discloses that deterioration of the design layer is prevented by covering the end portion of the design layer with a protective material.

JP-A-2002-142936

However, there is a concern that the protective material may come off due to physical and/or chemical load, and the design layer may begin to deteriorate.

The present invention has been made in view of the above problems, and an object of the present invention is to provide fittings that can prevent deterioration of the design layer.

The fitting of this aspect includes a laminate including a brittle plate-shaped body having a first surface and a second surface, a design layer disposed on the first surface, a protective material covering the end of the design layer, It comprises an end face adhesive that covers the protective material and the end face of the laminate, and a molding material that is bonded to the laminate with the end face adhesive.

According to the present invention, deterioration of the design layer can be prevented.

FIG. 1 is a schematic cross-sectional view of the door structure of the first embodiment. FIG. 2 is a schematic cross-sectional view of a door structure of a modified example of the first embodiment. FIG. 3 is a schematic cross-sectional view of the door structure of the second embodiment. FIG. 4 is a table summarizing the corrosion resistance evaluation of the door structure. FIG. 5 is a photomicrograph of Example 1 at 1 week and 4 weeks. FIG. 6 is a photomicrograph of Example 2 at 5 weeks.

An embodiment of the present invention will be described below with reference to the accompanying drawings. The invention is illustrated by the following embodiments. However, modifications may be made in many ways and other embodiments may be utilized without departing from the scope of the invention. Therefore, all changes that come within the scope of this invention are included in the claims. Here, parts indicated by the same symbols in the drawings are basically similar elements having similar functions.

<First Embodiment>
The fittings of the first embodiment will be described with reference to the drawings. Door structures, whiteboards, screens, tabletops, and counterboards can be exemplified as fixtures. Examples of fittings include panels, side plates, and shelves used in entrance storage, closets, cupboards, TV boards, bathroom vanities, toilets, kitchens, and the like. Examples of the door structure include doors of interior materials, mirror doors and storage doors used in closets, cupboards, TV boards, bathroom vanities, toilets, kitchens, and the like. A door structure will be described in the following first and second embodiments.

FIG. 1 is a schematic cross-sectional view showing the door structure 10 of the first embodiment. As shown in FIG. 1, the door structure 10 is a laminate including a flat plate-shaped body 12 having a first surface 12A and a second surface 12B, and a design layer 14 arranged on the first surface 12A. 17. In addition to the plate-like body 12 and the design layer 14 , the laminate 17 includes a coating material 16 that covers the design layer 14 on the surface of the design layer 14 opposite to the plate-like body 12 . It is possible to arbitrarily decide which of the two opposing main surfaces of the plate-like body 12 should be the first surface 12A and which should be the second surface 12B. The laminate 17 as a whole is configured in a flat plate shape having two main surfaces. The laminated body 17 has an end face 17A orthogonal to the main face. Orthogonal also includes substantially orthogonal. Here, "substantially orthogonal" means that the end face 17A is in the range of -5° to 5° with respect to the plane perpendicular to the main surface.

The door structure 10 is provided with a protective material 18 that covers the edge of the design layer 14 . In the embodiment, the protective material 18 covers the entire end face 17A of the laminate 17 including at least the end portion of the design layer 14 . The protective material 18 may cover at least the edge of the design layer 14 . It is not necessary to cover the entire end face 17A of the laminate 17. FIG.

The end surface adhesive 20 covers the protective member 18 and the end surface 17A of the laminate 17 . The edge adhesive 20 is not in direct contact with the edge 17A, but covers the edge 17A with the protective material 18 interposed therebetween. The end face 17A of the laminated body 17 and the molding material 22 are bonded with the end face adhesive 20. As shown in FIG. In the door structure 10 , the molding material 22 preferably covers all the end surfaces 17A of the laminate 17 . The fact that the end surface 17A of the laminate 17 and the molding material 22 are bonded by the end surface adhesive 20 means that the end surface 17A and the molding material 22 other than the end surface adhesive 20 (protective material 18, etc.) are included between the end surface 17A and the molding material 22. Direct bonding, which is the case where the end face 17A and the molding material 22 are not connected, and indirect bonding, which is the case where other members (protective material 18, etc.) are included in addition to the end face adhesive 20 between the end face 17A and the molding material 22 are included.

The molding material 22 protects the protective material 18 from physical (contact, etc.) and/or chemical (water, chemicals, etc.) loads. As a result, the protective material 18 is prevented from peeling off, and the protective material 18 protects the design layer 14 and prevents the design layer 14 from deteriorating.

Since the molding material 22 protects the end face 17A of the laminate 17, the impact resistance of the door structure 10 is improved. Moreover, since the molding material 22 covers the end surface 17A of the laminate 17, the design can be improved.

Since the door structure 10 is provided with the design layer 14, the door structure 10 can produce a high-grade aesthetic appearance when used for an entrance of a building or an opening of storage furniture.

The materials forming the door structure 10 will be described below.

<Plate-like body>
The effects of the present invention can be obtained as long as the plate-like body 12 is made of a brittle material. Brittleness means the property of being easily cracked when subjected to force. For example, the plate-like body 12 may be made of a glass plate, a resin plate, or a ceramic plate. The resin plate is preferably a brittle resin plate. Examples of brittle resin plates include melamine resin plates, acrylic resin plates, polycarbonate resin plates, vinyl chloride plates, and the like. Ceramic plates include ceramic members such as tiles. The plate-like body may be made of stone. Below, the case where the plate-like body 12 is a glass plate will be described.

The type of the glass plate applied to the plate-like body 12 is not particularly limited. For example, soda-lime glass, alkali-free glass, aluminosilicate glass, and the like can be mentioned. When chemical strengthening treatment is performed, an aluminosilicate glass containing 3% or more of Al ₂ O ₃ in mass % based on oxides is preferable.

The plate thickness of the glass plate is preferably 0.5 mm or more and 6 mm or less. When the plate thickness of the glass plate is 0.5 mm or more, the strength of the door structure 10 can be ensured. If the glass plate is 6 mm or less, the door structure 10 as a whole does not become heavy and can be easily transported and installed. The plate thickness of the glass plate is more preferably 1 mm or more, more preferably 1.5 mm or more. Further, the plate thickness of the glass plate is more preferably 4 mm or less, and even more preferably 3 mm or less.

When the plate-like body 12 is a glass plate, the density of the glass plate is preferably 2300 kg/m ³ or more and 2800 kg/m ³ or less, more preferably 2400 kg/m ³ or more and 2600 kg/m ³ or less. The specific gravity of the plate-like body 12 is preferably 2.3 or more and 2.8 or less, and more preferably 2.4 or more and 2.6 or less.

It is preferable that the glass plate applied to the plate-like body 12 is in close contact with the design layer 14 . When the design layer 14 is seen through the plate-like body 12 by close contact, the door structure 10 has an increased sense of depth and luxury, and is excellent in appearance. In addition, the visible light transmittance of the glass plate based on the standard A light source (determined in accordance with JIS R3106) is preferably 40% or more for aesthetic reasons, more preferably 45%, still more preferably 60%, and 70%. % or more is particularly preferred. Although the upper limit of the visible light transmittance of the glass plate based on the standard A light source is not particularly limited, it may be 100% or less, 92% or less, or 90% or less.

The surface of the glass plate may be textured by post-processing such as frosting in order to provide a texture on the surface.

A glass plate can be manufactured by a well-known method. That is, a glass plate is produced by cutting a ribbon-shaped glass formed by a float method, a fusion method, a down-draw method, a roll-out method, or the like.

The glass plate may have a compressive stress layer on the surface layer. When a glass plate is subjected to tempering treatment, the glass plate becomes a tempered glass plate. A tempered glass sheet that has undergone tempering treatment is less likely to break than a glass sheet that has not undergone tempering treatment. A tempered glass sheet includes compressive stress layers on the surface, ie, a surface layer and a back layer having residual compressive stress, and an intermediate layer formed between the surface layer and the back layer and having residual tensile stress. Residual compressive stress decreases toward the inside from both ends in the thickness direction of the tempered glass sheet, and residual tensile stress is generated inside the tempered glass sheet.

The end surface of the tempered glass plate may be covered with residual compressive stress continuously from the surface layer and the back surface layer. It is preferable that the end face of the tempered glass sheet is covered with residual compressive stress because it is less likely to break due to impact.

A tempered glass sheet is produced by applying a tempering treatment to generate residual compressive stress on the front surface and the back surface of the glass sheet. The tempered glass plate may be either chemically tempered glass obtained by chemical strengthening treatment such as ion exchange method or physically tempered glass obtained by physical strengthening treatment such as air cooling tempering method. If the chemical strengthening treatment is used, the value of the residual compressive stress in the surface layer and the back surface layer can be increased even with a thinner glass plate. For example, the residual compressive stress of the surface layer is preferably 300 MPa or more, more preferably 400 MPa or more. Although the upper limit of the residual compressive stress of the surface layer is not particularly limited, it may be 1200 MPa or less, 800 MPa or less, or 600 MPa or less. In the case of chemically strengthened glass, the thickness of the compressive stress layer may be 50 μm or less, or 40 μm or less. Moreover, the thickness of the compressive stress layer may be 10 μm or more, or may be 20 μm or more.

In the ion exchange method, the front and back surfaces of a glass plate are ion-exchanged to replace ions with a small ionic radius (eg, Li ions, Na ions) contained in the glass with ions with a large ionic radius (eg, K ions). Thereby, residual compressive stress can be generated on the front surface and the back surface of the glass plate. In the ion exchange method, ion exchange is performed by immersing a glass plate in a high-temperature treatment liquid.

In the air-cooling tempering method, a glass sheet at a temperature near the softening point is rapidly cooled from both sides, and by creating a temperature difference between the front and back surfaces of the glass sheet and the interior of the glass sheet, Residual compressive stress can occur. Physical strengthening methods such as the air-cooling strengthening method require several seconds to several tens of seconds for the strengthening treatment, and are therefore much more productive than the chemical strengthening method such as the ion exchange method.

The plate-like body 12 may have a functional layer for adding a special function on the surface opposite to the design layer 14 . Examples of functional layers include antifouling films, antibacterial films, and antifogging films.

The antifouling film has the effect of reducing adhesion of fingerprints and making it difficult for stains to adhere. In particular, if the door structure 10 is directly touched with a hand, fingerprints adhere to the surface of the plate-like body 12, impairing the design. The AFP function adheres the AFP agent to the plate-like body 12 to form an AFP film on the glass plate. AFP agents include fluorine-containing organosilicon compounds. The fluorine-containing organosilicon compound is not particularly limited as long as it imparts antifouling properties, water repellency and oil repellency. The molecular weight of the AFP agent is preferably 3,000 or more and 10,000 or less, more preferably 3,000 or more and 8,000 or less, and even more preferably 3,000 or more and 6,000 or less. When the molecular weight of the AFP agent is 3,000 or more, flexibility is imparted to the molecular structure, and scratch resistance and surface slipperiness can be obtained. In addition, when it is 10,000 or less, a sufficient number of reactive groups per molecule of the AFP agent can be secured, and adhesion to the surface of the plate-like body 12 can be secured.

The antibacterial film is formed by adhering an antibacterial agent that develops antibacterial properties to the plate-like body 12 . Antibacterial agents include natural antibacterial agents such as horseradish, metal antibacterial agents such as copper and silver, and oxide antibacterial agents such as titanium oxide. In particular, silver ions are diffused from the surface of the plate-like body 12 to the inside by applying a solution containing silver to the plate-like body 12 to form a silver film, and heat-treating the plate-like body on which the silver film is formed. It is preferable from the viewpoint of durability of the effect.

The anti-fogging film provides a water-absorbing resin layer on the surface of the plate-like body 12, and absorbs and removes micro water droplets formed on the plate surface of the plate-like body 12, thereby fogging the surface of the plate-like body 12. It has the effect of preventing and maintaining the design. The antifogging film includes, for example, a base layer and a water absorbing layer. The base layer is a layer for making it difficult to peel off the water absorbing layer from the glass plate, and is obtained, for example, by applying a composition containing a silane-based coupling agent to the plate-like body 12 and reacting it. The water absorbing layer is obtained by applying a composition containing raw material components of a cured resin selected from cured epoxy resins, urethane resins and crosslinked acrylic resins onto the base layer and reacting the composition.

The Young's modulus of the plate-like body 12 is preferably 5 GPa or more. If the Young's modulus of the plate-like body 12 is 5 GPa or more, it is difficult to warp. The Young's modulus of the plate-like body 12 is preferably 10 GPa or higher, more preferably 30 GPa or higher, and particularly preferably 50 GPa or higher. Although the upper limit of the Young's modulus of the plate-like body 12 is not particularly limited, it may be 100 GPa or less.

<Design layer>
A design layer 14 is formed on the first surface 12</b>A of the plate-like body 12 . The design layer 14 is formed, for example, by applying a paint containing a color pigment to the surface of the glass plate, which is the plate-like body 12, and drying and curing the paint. Examples of paints include acrylic resin-based paints. Acrylic resin-based paints have high adhesion and are excellent in weather resistance and corrosion resistance. Moreover, it is preferable in that the finish is beautiful. The design layer 14 is not particularly limited as long as it can impart design properties, and may be, for example, a melamine resin-based paint or an epoxy resin-based paint, and the color pigment may also be of various colors. Also, the design layer 14 may be a mirror coated with a metal film, and the metal film is silver plating, for example.

The coating method is not particularly limited, and for example, roll coating, spray coating, dip coating, flow coating, screen printing, spin coating and the like are used.

Instead of paint, a film as the design layer 14 may be adhered to the glass plate, which is the plate-like body 12, with an adhesive or the like. In that case, the film as the design layer 14 may have a single color or multiple colors, and may have a pattern such as natural stone tone or brick tone.

<Protective material>
The protective material 18 covers the edges of the design layer 14 and prevents the design layer 14 from deteriorating. When the edge of the design layer 14 of the metal film is exposed, corrosion of the design layer 14 starts from the edge, and the design of the design layer 14 deteriorates. In particular, since the silver-plated design layer 14 has high chemical reactivity, when it is exposed to the outside air, corrosion (also called corrosion) of silver oxide (black), silver oxide (white), etc. function deteriorates. In addition, when the edge of the design layer 14 of the paint is exposed, the paint is exposed to acid, alkali, water, etc., and corrosion of the design layer 14 may start from the edge, and the design of the design layer 14 deteriorates. . A protective material 18 covering the edge of the design layer 14 prevents deterioration of the design layer 14 .

The protective material 18 is preferably made of a material selected from the group consisting of nitrocellulose, acrylic silicon emulsion, acrylic resin, and silicone resin.

The thickness of the design layer 14 is preferably 0.03 μm or more and 300 μm or less, more preferably 20 μm or more and 150 μm or less.

<End face adhesive>
The end face adhesive 20 is a member that joins the end face 17A of the laminate 17 and the molding material 22, and covers the protective material 18 and the end face 17A of the laminate 17. FIG. In the embodiment, the protective material 18 covers the end surface 17A of the laminate 17 and the end surface adhesive 20 covers the protective material 18 . As a result, the end surface adhesive 20 covers the protective member 18 and the end surface 17A of the laminate 17 .

The edge adhesive 20 can be selected from the group consisting of hot melt adhesives, silicone adhesives, urethane adhesives, epoxy resin adhesives, and double-sided tapes.

A hot-melt adhesive is, for example, an adhesive that is heated to a specific temperature (100° C. to 250° C.) and melted before use. Ethylene vinyl acetate resin (EVA) adhesives, polyolefin resin adhesives, and polyurethane resin (PUR) adhesives can be used as hot melt adhesives.

A double-sided tape is generally a member having adhesive layers on both sides of a thin belt-like base material. For the substrate, for example, a resin film, paper, or the like can be used. Polyethylene, urethane, or the like can be used as the adhesive layer.

Also, a double-sided tape without a substrate can be used. A double-faced tape without a substrate is a member in which only an adhesive layer is provided on a double-sided release paper without a substrate. As the adhesive layer, an acrylic adhesive layer, a synthetic rubber adhesive layer, and a silicone adhesive layer can be used.

General construction adhesives can be used as the silicone-based adhesive, the urethane-based adhesive, and the epoxy resin-based adhesive.

The edge adhesive 20 is preferably a hot-melt adhesive. If hot-melt adhesive is used, the molding material 22 can be bonded to the end surface 17A of the laminate 17 using an edge banding machine (not shown). Hot-melt adhesives cure quickly, so productivity can be improved.

The thickness of the edge adhesive 20 is preferably 10 μm or more and 300 μm or less, more preferably 50 μm or more and 150 μm or less.

<Mold material>
The molding material 22 is a member that covers the end surface 17A of the laminate 17, and is made of acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), acrylic resin, polyethylene terephthalate resin (PET resin), polyvinyl chloride resin (PVC resin). ), and rubber systems.

By covering the end surface 17A of the laminate 17 with the molding material 22, the protective material 18 is protected from physical and/or chemical loads. The protective material 18 is prevented from peeling off by the molding material 22, and the protective material 18 prevents the function of the design layer 14 from continuously deteriorating. Protect the end surface 17A. Furthermore, the molding material 22 suppresses the occurrence of damage such as cracking and chipping of the end surface 17A of the laminate 17 .

The thickness of the molding material 22 is preferably 0.5 mm or more and 3 mm or less, more preferably 1 mm or more and 2 mm or less. By setting the thickness to 0.5 mm or more, the end surface 17A of the laminate 17 can be sufficiently protected. By setting the thickness to 3 mm or less, the external appearance of the molding material is not too conspicuous, and a beautiful appearance can be obtained.

<Other layers>
The laminate 17 of the embodiment includes a coating material 16 that covers the design layer 14 . As the coating material 16, acrylic, epoxy and melamine resins can be applied. Although polyethylene, polyurethane, silicone, ethylene-vinyl acetate copolymer (EVA) and ethylene-propylene-diene rubber (EPDM) are not shown, PET (polyethylene terephthalate) resin, olefin, reinforced paper and PVC (polychlorinated vinyl) resins may be applied. Also, two or more materials may be laminated as the coating material 16 .

FIG. 2 is a schematic cross-sectional view of a door structure of a modified example of the first embodiment. As shown in FIG. 2, in the modified example, the coating material 16 and the resin 24 are provided in this order from the design layer 14 side, which is the surface opposite to the plate-like body 12 . However, it is not limited to this structure.

As the coating material 16, acrylic, epoxy and melamine resins can be applied. As the resin 24, polyethylene, polyurethane, silicone, ethylene-vinyl acetate copolymer (EVA) and ethylene-propylene-diene rubber (EPDM) can be applied. Although not shown, PET resin, olefin, reinforced paper and PVC resin can be applied as the overcoat film. The thickness of the coating material 16 is preferably 10 μm or more and 300 μm or less, the thickness of the resin 24 is preferably 0.5 mm or more and 10 mm or less, and the thickness of the overcoat film is preferably 10 μm or more and 300 μm or less.

<Second embodiment>
The fittings of the second embodiment will be described with reference to the drawings. As shown in FIG. 3, the door structure 40 is a laminate including a flat plate-shaped body 42 having a first surface 42A and a second surface 42B, and a design layer 44 arranged on the first surface 42A. 47. The laminate 47 includes a coating material 46 covering the surface of the design layer 44 opposite to the plate-like body 42 , an adhesive layer 54 , and a core material 56 . It can be arbitrarily determined which of the two opposing main surfaces of the plate-like body 42 should be the first surface 42A and which should be the second surface 42B. The laminated body 47 is configured in a flat plate shape having two main surfaces as a whole. The laminated body 47 has an end face 47A orthogonal to the main face. Orthogonal also includes substantially orthogonal. Here, "substantially orthogonal" means that the end surface 47A is in the range of -5° to 5° with respect to the plane perpendicular to the main surface.

A protective material 48 is provided to cover the edge of the design layer 44 . In the embodiment, the protective material 48 covers the end portion of the design layer 44 and covers part of the end face 47A of the laminate 47 . The protective material 48 may cover at least the edge of the design layer 44 .

An edge adhesive 50 covers the protective member 48 and the edge 47A of the laminate 47 . The end surface 47A of the laminated body 47 and the molding material 52 are bonded with the end surface adhesive 50. As shown in FIG. In the door structure 40 , the molding material 52 preferably covers all the end faces 47A of the laminate 47 .

The molding material 52 protects the protective material 48 from physical (contact, etc.) and/or chemical (water, chemicals, etc.) loads. As a result, peeling of the protective material 48 is prevented, the protective material 48 protects the design layer 44, and deterioration of the design layer 44 is prevented.

Since the molding material 52 protects the end face 47A of the laminate 47, the impact resistance of the door structure 40 is improved. Moreover, since the molding material 52 covers the end face 47A of the laminate 47, the design can be improved.

The end surface 47A of the laminated body 47 and the molding material 52 are bonded with an end surface adhesive 50. As shown in FIG.

Since the bonding strength between the core material 56 and the end face adhesive 50 is high, the bonding strength between the laminate 47 and the molding material 52 can be increased compared to the door structure without the core material 56 .

Materials for forming the door structure 40 will be described below. It should be noted that descriptions of configurations similar to those of the first embodiment may be omitted.

<Plate-like body>
A plate-like body similar to the plate-like body 12 of the first embodiment can be applied to the plate-like body 42 . Since the door structure 40 of the second embodiment includes the core material 56, compared with the door structure 10 of the first embodiment, when the thickness of the door structure is constant, the plate thickness of the plate-like body 42 is can be made smaller. If the thickness of the plate-like body 42 can be reduced, the weight of the door structure 40 can be reduced.

<Design layer>
A design layer similar to the design layer 14 of the first embodiment can be applied to the design layer 44 .

<Adhesive layer>
The adhesive layer 54 is arranged on the surface of the design layer 44 opposite to the plate-like body 42 . The adhesive layer 54 is a member that joins the plate-like body 42 and a core material 56, which will be described later, and can be selected from the group consisting of a double-sided tape, a silicone sealing adhesive, a urethane adhesive, and a resin with an adhesive.

A double-sided tape is generally a member having adhesive layers on both sides of a thin belt-like base material. For the substrate, for example, a resin film, paper, or the like can be used. Polyethylene, urethane, or the like can be used as the adhesive layer.

Also, a double-sided tape without a substrate can be used. A double-faced tape without a substrate is a member in which only an adhesive layer is provided on a double-sided release paper without a substrate. As the adhesive layer, an acrylic adhesive layer, a synthetic rubber adhesive layer, and a silicone adhesive layer can be used.

Common building sealants can be used as the silicone-based sealing adhesive and the urethane-based adhesive.

The adhesive-attached resin is a member provided with adhesive layers on both sides of the functional resin (sides facing the plate-like body 42 and the core material 56, respectively).

As a resin, a resin that is a foam containing a skeleton resin that defines cells can be used. When a resin that is a foam is produced by a chemical cross-linking method, a cross-linking agent is added to the skeleton resin, and the cross-linking reaction by the cross-linking agent and the decomposition reaction of the foaming agent are caused to cause the gas component to stay, thereby forming air bubbles (cells). ) is defined, resulting in a resin with predetermined foaming properties.

The type of skeleton resin and the manufacturing method are not limited as long as a predetermined foaming property can be obtained. Synthetic resins, synthetic rubbers, etc. can be used as the skeleton resin, and for example, polyethylene, silicone, polyurethane, ethylene-vinyl acetate copolymer (EVA), ethylene-propylene-diene rubber (EPDM), etc. can be used. .

The cells defined by the skeleton resin are preferably closed cells. A closed cell body means a structure in which cells are arranged independently. By using a closed-cell structure, the physical strength of the resin can be improved as compared with an open-cell structure.

The skeleton resin constituting the resin preferably contains a flame retardant. Ignition of the resin is suppressed by the flame retardant.

The adhesive layer 54 may contain other components. Other components may include, for example, pigments and inorganic additives. Various functions can be imparted to the adhesive layer 54 . The presence or absence of a flame retardant or the like in the adhesive layer 54 can be measured by IR (infrared spectroscopy), TGA (thermogravimetric analysis), DSC (differential scanning calorimetry), or the like.

The adhesive on the plate-like body 42 side may be applied to the entire surface of the resin, or may be applied to a portion of the resin. Applying the adhesive to the entire surface is advantageous because the plate-like body 42 is less likely to crack. As the adhesive, a general building sealant can be used, and examples thereof include modified silicone sealants, acrylic adhesives, synthetic rubber adhesives, and the like. The adhesive may be sheet-like. In addition, it is preferable for the adhesive to be used as a building material so that the material and the amount of application are selected so as to increase the nonflammability.

As the adhesive on the core material 56 side, an acrylic adhesive, synthetic rubber, silicone, or modified silicone adhesive can be used.

The adhesive on the plate-like body 42 side and the adhesive on the core material 56 side may be the same or different.

The adhesive layer 54 may be a liquid member or a plate-shaped member. When the adhesive layer 54 is a plate-shaped member, it may be integrally formed with the plate-like body 42 by injection molding or extrusion molding.

The thickness of the adhesive layer 54 is preferably 1 mm or more and 10 mm or less. If the adhesive layer 54 has a thickness of 1 mm or more, sufficient impact resistance strength can be obtained when the adhesive layer 54 is laminated with the plate-like body 42 . The thickness of the adhesive layer 54 is more preferably 2 mm or more, and even more preferably 3 mm or more.

When the thickness of the adhesive layer 54 is 10 mm or less, deformation of the adhesive layer 54 due to the load of the plate-like body 42 is suppressed, and the shape of the door structure 40 is less likely to change. The thickness of the adhesive layer 54 is more preferably 7 mm or less, and even more preferably 5 mm or less.

<Core material>
The core material 56 is a member used as the core of the door structure 10 . The core member 56 has a flat plate shape and has a first surface 12A and a second surface 12B that face each other. A flat plate shape is a shape having two main surfaces having a large area with respect to the thickness.

Since the core material 56 is a member used as the core of the door structure 10, it preferably has rigidity. The core material 56 may be made of wood, metal, synthetic resin, or a composite thereof. The material can be appropriately selected according to the properties required for the door structure 40 .

In the case of the wooden core 56 , for example, materials such as wood fiberboards such as medium density fiberboard (MDF (Medium Density Fiberboard)), plywood, particleboard, etc. can be appropriately used as the core 56 . Medium-density fiberboard is specified in JISA5905. Plywood is constructed by laminating a plurality of veneers. Particleboard is manufactured by thermally compressing small pieces of wood using an adhesive, and is defined in JISA5908.

In the case of the wooden core material 56, for example, as the structure, a so-called solid structure (solid core structure) such as wood fiberboard, plywood, particle board, etc., and a flash structure board can be applied. The flash structural board has a hollow structure in which a wooden frame is attached to both sides with plywood or the like. Density can be reduced compared to solid structures.

The density of the wooden core material 56 is preferably 400 kg/m ³ or more and 900 kg/m ³ or less. If the density of the core material 56 is 400 kg/m ³ or more, the strength of the core material 56 can be secured. If the density of the core material 56 is 900 kg/m ³ or less, the weight of the door structure 10 can be reduced. More preferably, the density of the wooden core material 56 is 500 kg/m ³ or more and 800 kg/m ³ or less. Further, the specific gravity of the core material 56 is preferably 0.4 or more and 0.9 or less, and more preferably 0.5 or more and 0.8 or less.

The board thickness of the wooden core material 56 can be appropriately selected according to the thickness of the door structure 40 . The board thickness of the wooden core material 56 is preferably 2 mm or more and 25 mm or less. The plate thickness of the core material 56 is more preferably 5 mm or more, and even more preferably 10 mm or more. Further, the plate thickness of the core material 56 is more preferably 20 mm or less, and even more preferably 16 mm or less.

In the case of the core material 56 made of a synthetic resin, for example, acrylonitrile-butadiene-styrene copolymer synthetic resin (ABS resin), polyvinyl chloride resin (PVC resin), acrylic resin, or other material can be appropriately used as the core material 56 . can.

The plate thickness of the synthetic resin core material 56 can be appropriately selected according to the thickness of the door structure 40 . The plate thickness of the core material 56 made of synthetic resin is preferably 1 mm or more and 20 mm or less. The plate thickness of the core material 56 is more preferably 3 mm or more, and further preferably 5 mm or more. Further, the plate thickness of the core material 56 is more preferably 15 mm or less, and even more preferably 10 mm or less. In the case of the core material 56 made of metal, for example, a metal material such as aluminum or iron can be appropriately used as the core material 56 <Protective material>
As the protective material 48, the same protective material 48 as the protective material 18 of the first embodiment can be applied. The protective material 48 covers at least the edges of the design layer 44 .

<End face adhesive>
As the edge adhesive 50, an edge adhesive similar to the edge adhesive 20 of the first embodiment can be applied.

<Mold material>
A molding material similar to the molding material 22 of the first embodiment can be applied to the molding material 52 .

<Other layers>
The laminate 47 can contain at least one of a coating material, a resin, or an overcoat film as other layers, like the laminate 17 of the first embodiment.

<Example>
The present invention will be specifically described with reference to the following door structure examples, but the fittings of the present invention are not limited to these examples.

In order to evaluate the corrosion resistance of the door structure, four door structures with different structures were prepared. A salt spray cycle test was performed on four door structures to confirm the presence or absence of corrosion.

(Example 1)
As Example 1, a structure obtained by removing the end face adhesive and the molding material from the door structure of the first embodiment was applied. The plate-like body was a glass plate having a thickness of 5 mm, and the design layer was silver-plated. The laminate was provided with a coating material on the surface of the design layer opposite to the glass plate. The protective material was nitrocellulose.

(Example 2)
As Example 2, a structure obtained by removing the end face adhesive and the molding material from the door structure of the modified example of the first embodiment is applied. The plate-like body was a glass plate having a thickness of 2 mm, and the design layer was silver-plated. The laminate was provided with a coating material and a polyethylene resin having a thickness of 3 mm on the surface of the design layer opposite to the glass plate. The protective material was nitrocellulose.

(Example 3)
As Example 3, the door structure of the second embodiment was applied. The plate-like body was a glass plate with a thickness of 2 mm, the design layer was silver-plated, and the core material was MDF with a thickness of 12 mm. The laminate was provided with a coating material, a 3 mm-thick polyethylene resin (resin with adhesive), and the like on the surface of the design layer opposite to the glass plate. The protective material was nitrocellulose, the end face adhesive was an EVA-based hot-melt adhesive, and the molding material was a 2 mm-thick ABS molding material.

(Example 4)
As Example 4, the door structure of the second embodiment was applied. The plate-like body was a glass plate with a thickness of 2 mm, the design layer was silver-plated, and the core material was MDF with a thickness of 12 mm. The laminate was provided with a coating material, a 3 mm-thick polyethylene resin (resin with adhesive), and the like on the surface of the design layer opposite to the glass plate. The protective material was nitrocellulose, the edge adhesive was a PUR hot melt adhesive, and the molding material was a 2 mm thick ABS molding material.

(Salt spray cycle test)
The test was a test conforming to JIS C0024 (JIS C60068-2-52) "Environmental Test Method-Electrical Electron-Salt Spray (Cycle) Test Method (Sodium Chloride Aqueous Solution)".

Brine (5 wt % aqueous solution, pH=6.5-7.2 at water temperature 20±2° C.) was prepared.

The salt spray cycle consisted of (1) to (4) as one cycle, and a total of 8 cycles were performed.
(1) Salt spraying at 35°C for 2 hours.
(2) Storage at constant temperature and humidity at 40° C. and 93% RH for 22 hours.
(3) Repeat (1)-(2) 4 times (4 days in total).
(4) After being left at room temperature for 3 days, the surface was washed with tap water and wiped off with a paper wiper (JK Wiper (registered trademark) manufactured by Nippon Paper Crecia Co., Ltd.).

(Evaluation method)
Corrosion in the door structure was observed microscopically and visually and measured for size after each cycle. The case where no corrosion was observed was evaluated as A, the case where corrosion was confirmed with a microscope was rated B, and the case where corrosion was visually confirmed was rated as C.

(Evaluation results)
FIG. 4 is a table summarizing the corrosion resistance evaluation of the door structure. In Example 1, the occurrence of corrosion was confirmed with a microscope in the first week, and the occurrence of corrosion was visually confirmed in the fourth week. FIG. 5(A) is a photomicrograph at 1 week in Example 1, and FIG. 5(B) is a photomicrograph at 4 weeks. Corrosion was confirmed by micrographs at 1 week. Moreover, black corrosion occurred at the 4th week, and the corrosion was at a level that could be visually confirmed.

In Example 2, the onset of corrosion was confirmed microscopically at 5 weeks. FIG. 6 is a photomicrograph of Example 2 at 5 weeks. Micrographs at 5 weeks confirmed corrosion.

In comparison between Example 2 and Examples 3 and 4, the polyethylene resin has high waterproofness, and once applied on the coating material, the waterproofness is improved regardless of the presence or absence of the core material. Therefore, in Examples 3 and 4, it is considered that the core material does not contribute to the prevention of corrosion. That is, in Examples 3 and 4, the occurrence of corrosion could not be confirmed even in the 8th week because the molding material protected the protective material from physical and/or chemical loads. can.

10 door structure 12 plate-like body 12A first surface 12B second surface 14 design layer 16 coating material 17 laminate 17A end surface 18 protective material 20 end surface adhesive 22 molding material 24 resin 40 door structure 42 plate-like body 42A first surface 42B second surface 44 design layer 46 coating material 47 laminate 47A end surface 48 protective material 50 end surface adhesive 52 molding material 54 adhesive layer , 56 core material

Claims (10)

a laminate comprising a brittle plate-like body having a first surface and a second surface, and a design layer disposed on the first surface;
a protective material that covers the edge of the design layer;
an end face adhesive that covers end faces of the protective material and the laminate;
a molding material bonded to the laminate with the end face adhesive;
Fittings with 2. The joinery according to claim 1, wherein the laminate has an adhesive disposed on the side of the design layer opposite to the plate-like body, and a core material bonded by the adhesive. The fitting according to claim 2, wherein the core material is a wooden core material, a metal core material, or a synthetic resin core material. The joinery according to claim 2 or 3, wherein the adhesive is composed of a material selected from the group consisting of resin with adhesive, double-sided tape, silicone-based sealing adhesive, and urethane-based adhesive. The fitting according to any one of claims 1 to 4, wherein the protective material is made of a material selected from the group consisting of nitrocellulose, acrylic silicone emulsion, acrylic resin, and silicone resin. 6. Any one of claims 1 to 5, wherein the edge adhesive is made of a material selected from the group consisting of hot-melt adhesives, silicone adhesives, urethane adhesives, epoxy resin adhesives, and double-sided tapes. or fittings according to item 1. 7. The molding material according to any one of claims 1 to 6, wherein the molding material is composed of a material selected from the group consisting of acrylonitrile-butadiene-styrene copolymer synthetic resin, acrylic resin, polyethylene terephthalate resin, polyvinyl chloride resin, and rubber-based resin. The fittings according to item 1. The fitting according to any one of claims 1 to 7, wherein the plate-like body is composed of a glass plate or a ceramic plate. The fitting according to any one of claims 1 to 8, wherein the design layer is made of a material selected from the group consisting of silver plating, film, and paint. The fitting according to any one of claims 1 to 9, wherein the laminate includes at least one of a coating material, a resin, or an overcoat film that covers the surface of the design layer opposite to the plate-like body.

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