JP2003090118A - Renovation panel - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] To provide a panel which is excellent in fire resistance and workability and is robust, which is used for overlapping on an outer wall of a house. SOLUTION: This panel is obtained by using a molding material containing at least a phenol resin, an inorganic filler, and an inorganic fiber, and is used for laminating on an outer wall of a house, wherein the average fiber length of the inorganic fiber is 10 to 50 mm. A panel having a fitting structure with a minimum thickness of 2 mm or more on an outer peripheral portion of the panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reforming panel used for laying on an outer wall of a house.

[0002]

2. Description of the Related Art Conventionally, in order to remodel an outer wall of a house, it is general that the surface is repainted by spraying to finish. However, when the coating is performed by spraying, there is a problem that scattering of fine powder of the coating liquid to neighboring houses and volatilization of the organic solvent in the coating increase the environmental load. This problem becomes more serious in residential areas such as urban areas. On the other hand, in recent years, attempts have been made to reform the outer wall of a so-called second-hand house after 10 years of construction, particularly in a house having a wooden frame structure, without resorting to repainting. This method is to renew the exterior by overlaying a new outer wall material on the existing old outer wall surface. For example, as disclosed in JP-A-63-125770, a lightweight outer wall material such as metal siding has been developed as a lightweight outer wall material for overlaying. This is a structure in which embossed irregularities are formed on the surface of a metal thin plate such as aluminum constituting the surface layer, and the inner layer is made of urethane foam or the like, and this is a method of attaching this to the existing outer wall surface by nailing.

However, this construction method is often lacking in a high-grade appearance because the unevenness of the aluminum surface is too glossy. In addition, since the melting point of the aluminum surface is 660 ° C., when a naked flame violently contacts the outer wall surface due to a fire or the like, the surface is melted and broken, and there is a problem in fireproofness. This drawback becomes particularly noticeable when the outer wall material of the base is a wooden structure with small fire resistance. There is also an idea of using a ceramic non-combustible outer wall material as the outer wall material to be overlaid. However, the ceramic outer wall material generally has a large weight per unit area, and when it is overlaid on the existing outer wall surface, a large weight will be applied to the mounting portion, so the state of the existing outer wall surface of the base is There is a problem in that it cannot be applied when the patient is suffering from a large weight that cannot be tolerated. In addition, the fact that the weight of the outer wall material is large leads to a decrease in workability, such as increasing a burden on a worker who works on site.

In Japanese Patent Publication No. 2965551, a flame-retardant phenolic resin containing inorganic fibers is used as a raw material to solve the above-mentioned problems, and the resulting raw material is molded into a panel shape. A method of obtaining lumber is disclosed. However, the outer wall material has a monotonous flat plate design with a surface design, and it is necessary to fix the outer wall material to the outer wall surface of the house with nails or screws, which is a problem in terms of workability. Also,
Japanese Unexamined Patent Publication No. 7-217059 discloses an outer wall material which has a thermoplastic resin as a main component and has a fitting structure on the outer peripheral portion and which is excellent in design. When the outer wall material is attached to an existing outer wall surface. Although a method for efficiently mounting the fitting structure by fitting the fitting structure has been disclosed, the outer wall material has a drawback of poor fire resistance because it contains a thermoplastic resin as a main component.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a robust reforming panel which is excellent in fireproofness and workability and which is used for being overlaid on the outer wall of a house.

[0006]

The present invention is as follows. (1) A panel obtained by using at least a phenol resin, an inorganic filler, and an inorganic fiber as a forming raw material, the panel being laminated on the outer wall of a house, and having an average fiber length of 10 to 50 mm, and A panel, which is an integrally molded product having a fitting structure with a minimum thickness of 2 mm or more on the outer peripheral portion of the panel. (2) The panel according to (1), wherein the inorganic filler contains kaolin clay and aluminum hydroxide. (3) The panel according to (1) or (2), characterized in that the panel is coated with fireproof paint. (4) Using a molding raw material containing at least a phenol resin, an inorganic filler, and an inorganic fiber having an average fiber length of 10 to 50 mm, and having an undercut portion such that the minimum thickness of the fitting structure of the panel is 2 mm or more. The method for producing a panel according to (1) or (2), characterized in that press molding is performed using a mold. Hereinafter, the present invention will be described in detail.

The present invention is a reforming panel which is laminated on the outer wall of a house. The outer wall of a house refers to a wall that covers the outermost periphery of a building, such as a wooden mortar outer wall, an ALC (lightweight cellular concrete) outer wall, a metal siding outer wall, a ceramic siding outer wall, and a resin siding outer wall.
Overlapping means that the existing outer wall is attached to the outer wall without overlapping the outer wall. At this time, if the existing outer wall needs to be repaired, it is included in the lap-up that the panel is adhered after repairing it appropriately.

As a method of attaching the panel to an existing outer wall, a method of fixing a body rim on the existing outer wall and attaching the panel to the body rim can be used. The torso can be fixed on the existing outer wall with screws, nails, adhesive, etc. Further, as the material of the trunk, wood, metal, resin, etc. can be used.

The panel of the present invention contains at least a phenol resin, an inorganic filler and an inorganic fiber. The phenolic resin may be a resol-based phenolic resin or a novolak-based phenolic resin, and in order to increase the degree of polymerization of these resins, an acid catalyst or novolak is used for the resol-based phenolic resin. The type phenolic resin may be added with a base catalyst, but it is preferable to use a resol-type phenolic resin which is liquid at room temperature without a catalyst because molding processing can be easily performed and productivity can be improved. The viscosity of the kneading property viewed from a phenolic resin of the raw material paste is preferably from ^{3 × 10 -2 Pa · s~10Pa ·} s, more preferably ^{5 × 10 -2 Pa · s~3Pa ·} s. The viscosity referred to here is 3 ° on a R-100 type (RE type) viscometer manufactured by Toki Sangyo Co., Ltd.
A value measured with a R14 cone attached at 0.5 rpm and 25 ° C.

The phenol resin content is preferably 1 to 60 wt% in the panel,
It is more preferably 10 to 40 wt%. When the phenol resin content is less than 1 wt%, the inorganic filler to be mixed and the inorganic fiber cannot be bonded with sufficient strength, and as a result, a panel cannot be obtained, which is not preferable. Further, when the phenol resin content exceeds 60 wt%, fire resistance is deteriorated, which is not preferable.

As the inorganic filler, kaolin clay,
Aluminum hydroxide, calcium carbonate, talc, microballoons, barium sulfide, silicic acid anhydride, diatomaceous earth, glass powder, mica, magnesium carbonate, antimony trioxide, zonotolite, tobermorite, wollastonite, silica sand and the like, Of these, kaolin clay and aluminum hydroxide are preferably used. These inorganic fillers can be used alone or as a mixture of two or more kinds. When kaolin clay and aluminum hydroxide are included as the inorganic filler, the mixing ratio is preferably in the range of kaolin clay: aluminum hydroxide = 1: 10 to 10: 1,
The range of 1: 6 to 6: 1 is more preferable. The content of the inorganic filler is 10 to 7 as the content in the panel.
It is preferably 0 wt%, more preferably 20 to 60 wt%.

Examples of the inorganic fibers include glass fibers, mineral fibers and mixtures thereof. In particular, glass fiber is preferable because it has high strength and a uniform shape. As the glass fiber, E-glass, C-glass, T-glass,
There are types such as AR-glass and D-glass, but the types of these glasses are not particularly limited, but E-glass is preferable from the viewpoint of cost. The average fiber diameter of the inorganic fibers is preferably from 3 to 200 μm, more preferably from 6 to 30 μm. The average fiber length of the inorganic fibers is 10 to 50 mm, and preferably 20 to 40 mm, as the average fiber length of the forming raw material. When the average fiber length of the inorganic fibers is less than 10 mm, the reinforcing effect is not sufficiently exerted, and as a result, sufficient panel strength is not exhibited, which is not preferable. If the average fiber length of the inorganic fibers exceeds 50 mm, the fluidity of the molding precursor is lowered and the moldability at the time of molding the panel is lowered, which is not preferable. The inorganic fiber content in the panel is preferably 5 to 40 wt%, more preferably 10 to 30 wt%.

In the present invention, the forming raw material means a raw material used for forming a panel, and examples thereof include a phenol resin, an inorganic filler, an inorganic fiber, and an additive added as necessary. Further, the molding precursor refers to a bulk or sheet-like material obtained from a molding raw material in a state immediately before being charged into a mold, and in the manufacturing method of the present invention, a bulk bulk from the molding raw material is used. A molding precursor of a molding compound (hereinafter referred to as BMC) or a sheet-shaped sheet molding compound (hereinafter referred to as SMC) is formed, and then charged into a mold for press molding. SM for obtaining panel-shaped molded products
The shape of C is preferable.

In the present invention, additives that are added as necessary include flame retardants, ultraviolet absorbers, internal release agents, thickeners, etc. for imparting flame retardancy, weather resistance, releasability and the like. And an internal release agent is particularly preferably included. The amount of the internal release agent added is 0.1 as the content in the panel.
-5 wt% is preferable, and 1-3 wt% is more preferable.
Examples of the internal release agent include aliphatic hydrocarbon-based ones, higher aliphatic alcohol-based ones, fatty acid amide-based ones, metal soap-based ones, phosphoric acid-based ones, among others, zinc stearate, medium Sodium phosphate alcohols are preferred.

The panel of the present invention is an integrally molded product having a fitting structure on its outer peripheral portion. The fitting structure refers to a structure of concave and convex parts that allows multiple panels to be joined by fitting the convex part of another panel into the U-shaped concave part. It has a V-shaped concave portion and a convex portion. That is, if there is a U-shaped concave portion on the left side of the outer peripheral portion, there is a convex portion on the right side, and if there is a convex portion on the lower portion, there is a concave portion on the upper portion, such as a convex portion on the opposite side of the outer peripheral portion. It has a concave structure. The outer peripheral portion of the panel refers to the entire area of the upper, lower, left and right peripheral portions of the panel, or a partial area thereof. A specific example of the fitting structure is shown in FIG. 1 for a convex portion and in FIG. 2 for a concave portion. Further, FIG. 3 shows a state in which the convex portion and the concave portion are combined.
Further, the length of the portion indicated by the range L of the combination of the fitting structures in FIG. 3 is preferably in the range of 3 to 80 mm for the purpose of maintaining the strength of the combined panel, and is 5 to 50 mm.
The range of mm is more preferable.

The term "integrally molded product" means that the entire panel is molded at once, and the panel is not divided into two or more parts, and the parts are molded and then joined together. Usually, the one-piece molded product has a structure that cannot be divided into two or more parts. This panel can be provided with holes for fixing to the furring strip attached to the existing outer wall. Since the panel of the present invention has the fitting structure, it is possible to reduce the number of nails, screws and the like used when constructing the panel, and it is possible to improve the constructability. Further, since the panel of the present invention is an integrally molded product, the panel can be manufactured by a single operation without the need for a process of separately manufacturing the fitting portion and the panel body and then joining them together. It also has the advantage of being able to improve significantly.

Further, in the present invention, the minimum thickness of the fitting structure is 2 mm or more, and more preferably 3 mm or more. The minimum thickness of the fitting structure refers to the minimum thickness of a portion constituting the fitting structure (however, a portion having a width of 5 mm from the panel outer peripheral end portion of the fitting structure toward the center of the panel is excluded). The minimum thickness of the part of the fitting structure that has a width of 5 mm from the outer periphery of the panel toward the center of the panel is 2 mm.
Can be less than. Explaining in the figure, it means the minimum value of the thickness of the fitting structure indicated by W in the convex portion shown in FIG. 1 and the concave portion shown in FIG. That is, it refers to the narrowest part of the flow path where the molding precursor flows and is filled during molding in the fitting structure portion of the panel. Minimum thickness of mating structure is 2m
If it is m or more, the flow of the molding precursor in the fitting structure portion of the panel can be secured, so that the fitting raw material is sufficiently filled in the fitting structure portion, and a fitting structure having sufficient strength is obtained.
It has sufficient strength as a panel. In addition, the upper limit of the thickness of the fitting structure is not particularly limited in the case of the present invention, but if this thickness is too large, it leads to an increase in the weight of the panel and a decrease in workability, and is 20 mm or less, preferably 15 m.
It is preferably m or less.

The panel of the present invention has a material thickness of 2 to 20 mm for the purpose of maintaining the strength of the entire panel.
It is preferably in the range of. In addition, the size of the panel is 100 mm x 5 for the purpose of maintaining good workability.
It is preferably in the range of 00 mm to 2000 mm × 4000 mm. The panels of the present invention are preferably painted with a fireproof paint. The fireproof paint is a paint containing a fireproof component and having the effect of improving fireproofness of the panel by coating.

Examples of the fireproofing component include ammonium polyphosphate, antimony trioxide, zirconium oxide, barium metaborate, melamine, pentaerythritol, zinc borate, phosphoric acid ester, polyphosphoric acid ester, tricresyl phosphate and the like. Among the fireproof paints, a foamable fireproof paint containing ammonium polyphosphate is suitable for the panel of the present invention because it exhibits excellent fireproofness. The content of the fireproofing component in the fireproof coating is preferably 3 to 60% by weight based on the coating film made of the fireproof coating,
An amount of 5 to 40 wt% is more preferable.

The fireproof paint usually contains acrylic silicone resin, urethane resin, silicone resin, fluorine resin, epoxy resin, inorganic filler and the like as components other than the fireproof component. The thickness of the coating film made of the fireproof paint is preferably 10 μm or more, more preferably 50 μm or more. The upper limit of the thickness is not particularly limited, but it is preferably 2 mm or less, and more preferably 1 mm or less as a range in which uniform coating is possible.

In the present invention, the fire resistance of the panel uses a cone calorimeter III device manufactured by Toyo Seiki Co., Ltd.
A total calorific value was obtained according to a combustion test based on "Fireproof and Fireproof Performance Test / Evaluation Work Method Manual" edited by Japan Building Research Institute, and this value was compared and judged. The smaller the total calorific value, the better the fire resistance. Further, in order to improve the durability and weather resistance of the panel, it is preferable to apply a weather resistant coating on a coating film made of a fireproof coating. As the weather resistant coating, acrylic-based, urethane-based, acryl-silicone-based, silicon-based, fluororesin-based or inorganic-based coatings can be mentioned, and acrylic-silicone-based coatings are preferable from the viewpoint of cost. When forming a coating film made of a weather-resistant paint on a coating film made of a fire-resistant paint, the amount of the fire-prevention component in the fire-resistant paint should be based on the entire coating film including the coating film made of a weather-resistant paint from the viewpoint of fire resistance. The content of the fire protection component is preferably 0.5 to 40 wt%, more preferably 2 to 30 wt%.

In the present invention, whether or not a panel is coated with a fireproof paint is determined by first cutting the panel vertically to the surface and observing with an electron microscope at a magnification of 500 to 1000 to form a coating film. After confirming that there is a cone calorimeter III device manufactured by Toyo Seiki Co., Ltd.,
Perform a combustion test based on "Fireproof Performance Test / Evaluation Procedures" edited by Japan Building Research Institute. In this combustion test, if the total time during which the flame was raised and burned was 3 minutes or less during the 10-minute test, it was determined that the fire-preventive paint had been applied. Further, in the present invention, only the front surface of the panel may be painted with a fireproof paint, only the back surface of the panel may be painted, or both the front surface and the back surface of the panel may be painted. It is preferable to apply a fireproof paint from the viewpoint of cost and productivity.

The method for manufacturing the panel of the present invention will be described below. In the method for manufacturing a panel of the present invention, a bulk molding compound is first formed from a molding raw material.
(Hereinafter referred to as BMC), or a sheet-shaped sheet molding compound (hereinafter referred to as SMC) molding precursor is prepared, and is press-molded using a mold having a desired panel shape. preferable. At this time S
More preferably, a molding precursor in the shape of MC is prepared.

A raw material paste is manufactured by mixing a molding raw material, that is, a phenol resin, an inorganic filler, and an additive to be added as necessary with a mixer. This is set in a sheet molding compound manufacturing apparatus and continuously coated on a carrier film. Carrier film made of polyethylene or polypropylene with a thickness of 10
It is preferable to use a film of ˜100 μm. The thickness of the coating is preferably 0.3 to 3.0 mm. Coated carrier film is top and bottom 2
The raw material paste and the inorganic fiber are set in place and the inorganic fiber cut to a predetermined length (10 to 50 mm) is sandwiched between these two films while adjusting the amount so that the predetermined content is obtained. Roll up the film while squeezing the film so that it fits in well. This time,
The thickness of the sheet-shaped molding precursor excluding the carrier film is preferably 0.5 to 5 mm, and 1 to 3 mm.
Is more preferable.

This sheet-like molding precursor is used at 40 ° C. for about 24 hours to 100 to improve the moldability during molding.
It is preferable to perform the heat treatment while adjusting the temperature and time within the range of about 0.5 hour at 0 ° C. The molding precursor thus produced is cut into an appropriate size with the carrier film peeled off, set in a press die, and heated at 130 to 190 ° C. for 1 hour.
Press mold for ~ 5 minutes. At this time, when the thickness of the molding precursor is small, a plurality of sheets can be stacked and set in a mold. Further, when it is desired to partially increase the thickness of the panel, it is possible to increase the number of molding precursors only in that portion.

The mold used for molding has an inner shape of the mold such that the minimum thickness of the fitting structure of the molded panel is 2 mm or more. Further, it is a mold for press molding having an undercut portion. Further, this undercut portion tends to be damaged when the product is released from the mold. Therefore, it is preferable to provide an appropriate draft, and the minimum draft is preferably 1 ° or more, preferably 3 ° or more, more preferably 5 ° or more. 1 (c), 2 (b) and 2 (c) are examples in which a draft is provided at the undercut portion. Here, the undercut portion is the shape inside the mold for obtaining the recess of the fitting structure, and indicates, for example, the portion shown in the sectional view of FIG. Where (i) is the upper mold,
(Ii) is a lower mold, and (iii) is a core portion for forming a recess. The structure of the core portion may be such that it automatically slides when the mold is opened or closed, or it is set in the mold for each molding and is removed from the molded product and then removed from the molded product.

The panel thus obtained is preferably coated with a fireproof coating after removing burrs. The coating method at this time is not particularly limited, but a solution prepared by dispersing a fireproof coating in a solvent such as water, alcohol or toluene is sprayed onto the panel to be coated, or a solution prepared by dispersing a fireproof coating in a solvent such as water, alcohol or toluene. Apply the fire-preventive paint by dipping the panel in a glass or applying a solution of the fire-preventive paint dispersed in a solvent such as water, alcohol or toluene to the panel with a brush.
Thereafter, a method of forming a coating film by drying with hot air or air drying can be used.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on Examples.

[0029]

Example 1 100 parts by mass of a resol-based phenolic resin (BRL-240 manufactured by Showa Highpolymer Co., Ltd.), 1 part by mass of calcium hydroxide (special grade reagent manufactured by Kanto Chemical Co., Inc.) as a thickener, and an internal mold release agent. As zinc stearate (Kanto Chemical Co., Ltd. reagent first grade) 3 parts by mass, aluminum hydroxide (Showa Denko KK Heidilite H32) 83 parts by mass, kaolin clay (ENGELHARD ASP-400)
P) 83 parts by weight of a hand mixer (Shibaura Seisakusho, BMV
-150 A) was mixed for 10 minutes to obtain a raw material paste.

This raw material paste was set in an SMC manufacturing apparatus (manufactured by Tsukishima Kikai Co., Ltd.). While using a polypropylene film having a thickness of 40 μm as a carrier film and coating the raw material paste with a thickness of 1 mm, the film was run from two locations at the top and bottom of the apparatus. At this time, the glass fiber robingue (RS240PB549AS manufactured by Nitto Boseki Co., Ltd.) was used to obtain an average fiber length of 25
It was added so as to be sandwiched between two carrier films while being cut into mm. The amount added at this time was adjusted so that the glass fiber content was 22 wt% in the panel. The continuously obtained sheet was wound into a roll, heat-treated at 80 ° C. for 4 hours, and cut into an appropriate size to obtain a molding precursor for press molding.

A molded product obtained, which has a surface chrome-plated finish mounted on a pressure press heated to 180 ° C., has an undercut portion for molding a fitting structure, and has a core portion width of 2.1 mm. The minimum thickness of the mating structure is 2.2 m
Quickly set two molding precursors so that they overlap each other in a mold of m, and close the mold to 3 at 5.1 × 10 ⁶ Pa.
When heated and pressed for a minute, the average thickness is 2 mm, the weight per unit area is 5 kg / m ² , and the minimum thickness is 2.2 on the outer peripheral portion.
A panel having the same shape as the inner shape of the mold having a fitting structure of mm was obtained (FIG. 5). Further, the surface of this panel was coated with a fire-retardant paint (No. 9 manufactured by Goethe House Co., Ltd.) containing about 27 wt% of ammonium polyphosphate so that the coating film after drying had a thickness of 80 μm (a coating amount per unit area was about 1
A panel was obtained by spray coating at 50 g / m ² ).

A flat portion having a thickness of about 2 mm near the center of the design portion of the obtained panel was cut out into a size of 15 mm × 50 mm, and a universal tensile compression tester (model manufactured by Minebea Co., Ltd.
When the bending load was measured with a TVM500) at a test span of 32 mm and a head speed of 2 mm / min, it was 151 N. The thickness of the mating structure part of the obtained panel is about 2m.
When a flat portion of m was cut into 15 mm × 50 mm and the bending load was measured in the same manner, it was 129 N. Furthermore, using a Toyo Seiki Co., Ltd. corn calorimeter III device,
A combustion test was carried out based on "Fireproof Performance Test / Evaluation Procedures" edited by Japan Building Research Institute. When a 10 cm × 10 cm square sample was cut out from the center of the panel and subjected to a combustion test for 10 minutes, the total calorific value was 6.1 MJ / m ² , and no crack was found in the sample after the test.

[0033]

[Example 2] A panel was prepared and evaluated in the same manner as in Example 1 except that the average fiber length of glass fibers used as a forming raw material was set to 15 mm.
N, bending load of fitting structure part 125N, total heat generation 6.8
It was MJ / m ² .

[0034]

[Example 3] A panel was prepared and evaluated in the same manner as in Example 1 except that the average fiber length of glass fibers used as a forming raw material was 45 mm.
N, bending load of fitting structure part 121N, total heat generation 7.1
It was MJ / m ² .

[0035]

[Comparative Example 1] A panel was prepared and evaluated in the same manner as in Example 1 except that the average fiber length of glass fibers used as a forming raw material was set to 7 mm.
Bending load of fitting structure 95N, total calorific value 6.5MJ /
It was m ² .

[0036]

[Comparative Example 2] A panel was produced in the same manner as in Example 1 except that the average fiber length of the glass fiber used as a forming raw material was 60 mm, but the molded body after pressing was not filled with the forming raw material in the fitting structure portion. Part occurred. Further, the bending load of the panel design portion was 170 N and the bending load of the fitting structure portion filled with the forming raw material was 51 N, and the strength of the fitting structure portion was lowered.

[0037]

[Comparative Example 3] A panel was produced in the same manner as in Example 1 except that a mold having a minimum fitting structure thickness of 1.8 mm was used, but the molded body after pressing was molded in the surrounding fitting structure portion. Some parts of the raw material were not spread. Further, the bending load of the panel design portion was 150 N and the bending load of the fitting structure portion filled with the forming raw material was 20 N, and the strength of the fitting structure portion was lowered.

[0038]

EFFECTS OF THE INVENTION According to the present invention, it is possible to obtain a rugged reforming panel which satisfies the requirements for stacking on the outer wall of a house and has excellent fireproofness and workability.

[Brief description of drawings]

1A to 1D are cross-sectional views of a specific example of a convex portion of a fitting structure used in the present invention.

2A to 2C are cross-sectional views of a specific example of a recess of a fitting structure used in the present invention.

FIG. 3 is an example cross-sectional view showing a state in which a convex portion and a concave portion of the fitting structure are combined.

FIG. 4 shows a sectional view of an undercut portion of an example of a mold according to the present invention.

FIG. 5 (a) is a top view of a panel according to the present invention. (B): It is sectional drawing of the AA 'line of (a). (C): It is sectional drawing of the BB 'line of (a). (D): It is sectional drawing of the CC 'line of (a).

[Explanation of symbols]

1 panel, 2 upper convex fitting structure part, 3 lower concave fitting structure part, 4 left convex fitting structure part, 5 right concave fitting structure part, 6 design part, 7 hole part, 8 Example In which the bending load was measured, 9 The part of the fitting structure in which the minimum thickness was changed in the example and the comparative example, w The thickness of the fitting structure L The length of the combined part of the fitting structure (i) Above the mold A mold, (ii) a lower mold of a mold, (iii) a core portion for making a recess,

Continued front page    F-term (reference) 2E110 AA02 AA42 AA51 AB04 AB22                       BA12 BA22 BB22 BC02 BD02                       CA03 DA03 DA23 DC08 GA23W                       GA33W GA42W GB49W                 2E176 AA09 BB25

Claims (4)

[Claims] 1. A panel which is obtained by using at least a phenol resin, an inorganic filler, and an inorganic fiber as a molding raw material and which is laminated on an outer wall of a house, and has an average fiber length of 10 to 50 mm. The panel is an integrally molded product having a fitting structure with a minimum thickness of 2 mm or more on the outer peripheral portion of the panel. 2. The panel according to claim 1, wherein the inorganic filler contains kaolin clay and aluminum hydroxide. 3. The panel according to claim 1, wherein the panel is painted with a fireproof paint. 4. An undercut portion that uses a molding raw material containing at least a phenol resin, an inorganic filler, and an inorganic fiber having an average fiber length of 10 to 50 mm and has a minimum fitting structure thickness of 2 mm or more. Press-molding using a mold having
Alternatively, the method for manufacturing the panel according to the item 2.