JPH09290484A - Manufacture of stone composite panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the productivity and operability and to alleviate the warp of a panel by moderating the stone crack at the time of manufacturing the panel and omitting the step of manufacturing the laminate of a skin-honeycomb core-skin. SOLUTION: The method for manufacturing a stone composite panel obtained by lining a honeycomb core 2 to the thin layer stone 1 of a front surface material comprises the steps of laminating a fiber-reinforced thermosetting resin type adhesive sheets 3, 3' between the front surface material and the core 2 and at the opposite side of the core 2 by using the core 2 laminated with no skin on both surfaces, interposing a cushioning material 4 between the front surface material and a hot press, simultaneously adhering the materials by hot press molding the laminate or laminating a plate material having linear expansion coefficient similar to the linear expansion coefficient of the front surface material on the rear surface side of the core 2, interposing the material 4 between the front surface material and a press hot plate, and hot press molding it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a stone composite panel which is useful as a decorative material such as interior and exterior materials and furniture in buildings and other structures, or as an interior panel for ships, vehicles and the like. More specifically, the present invention relates to a method for manufacturing a stone composite panel in which a honeycomb core having skins on the front and back sides is lined and adhered to a thin layer stone material as a surface material.

[0002]

2. Description of the Related Art Stone materials have been widely used as interior and exterior materials for buildings since they have good design and excellent heat insulation. As a conventional technique, as shown in JP-A-56-8217, a honeycomb core having skins on the front and back is pressure-bonded to both sides of a stone slab such as marble having a thickness of 20 to 40 mm by a cold press method. After that, a method is disclosed in which the center of the stone slab is cut and separated to manufacture a composite panel having a thin stone of about 10 to 15 mm. In this case, rough stones such as marble are cut with a gang saw having a mechanism for cutting into a plurality of slabs with an iron plate blade, iron sand, and abrasive grains composed of lime to obtain a thin layer stone material having a thickness of 20 to 40 mm. The reason for this is that, in the market for natural stones, those having a thickness of 20 to 40 mm, which have been surface-polished or burner-treated, are in circulation, and therefore this is usually used.

In the cutting method using a gang saw or the like, it is not always easy to obtain a thin layer product having a slab thickness of 15 mm or less due to its mechanism. In this case, it is possible to finish the slab having a thickness of about 15 mm by secondary polishing to form a thin layer product, but it is not realistic from the viewpoint of productivity and cost. Also, even if a panel is manufactured using thin-layer stone material that has been cut, the strength is not sufficient because it is a thin layer, and due to the waviness and unevenness (roughness) of the stone surface caused by cutting However, there is a problem that the stone material is cracked during molding and the product yield is reduced.

On the other hand, as a stone panel in which a thin stone material is used without using a stone slab and a honeycomb core having a skin is laminated on the stone panel, there is disclosed in Japanese Patent Laid-Open No. SHO 6-62
Japanese Patent Laid-Open No. 3-42861 is disclosed. In this,
It is said that a thin stone raw material having a thickness of 0.5 to 10 mm can be obtained by a processing technology developed in recent years, but there is no specific description about the processing technology. In this regard, the present inventors can obtain a thin stone slab of about 3 mm by adopting a band saw having a diamond segment attached to a steel band or a beads saw having diamond beads attached to a steel wire as a cutting machine, Moreover, it has been found that a stone material having a relatively smooth surface can be obtained by this cutting method. However, even when this cutting method is used, since the stone slab surface is not completely smooth, stone crack prevention during panel manufacturing due to poor adhesion, excessive pressure bonding, etc. is not always satisfactory. .

On the other hand, another major problem in the prior art is a cold press method, in which a room temperature hardening type adhesive or a room temperature hardening type adhesive sheet is used and a pressure is applied at room temperature as an adhesion method for a thin layer stone material and a honeycomb core. Is being implemented. This cold press method requires a pressing time of about half a day to about one day and a curing period of about 1 to 5 days (depending on the curing temperature), so that the productivity is low and the workability is poor. In the conventional technology, the reason why the hot press method with high productivity is not adopted is the strength of the above-mentioned thin layer stone material,
This is because quality problems such as stone cracking become more prominent in hot press molding, and cannot be adopted as an industrial production technology at all.

Furthermore, another major problem in the prior art is that, in addition to the step of bonding the thin-layer stone material and the honeycomb core, a step of manufacturing a honeycomb core having a skin is required. This honeycomb core is manufactured by applying an adhesive and then adhering FRP thin plates to both sides of the honeycomb material expanded into a predetermined shape, or by placing a glass fiber cloth impregnated with an adhesive resin and then pressing. It is necessary to bond them together, resulting in an increase in equipment costs and running costs.

[0007]

DISCLOSURE OF THE INVENTION An object of the present invention is to reduce stone cracks at the time of manufacturing a panel, and to omit the manufacturing process of a laminate of skin-honeycomb core-skin to achieve high productivity and workability. It is to provide a method for manufacturing a stone composite panel. Another object of the present invention is to provide a method for manufacturing a stone composite panel that reduces warpage of the stone composite panel. Further, another object of the present invention is to provide a method for manufacturing a stone composite panel with higher productivity and workability. And not only a small panel of about 600 mm x 600 mm, but 900 mm x 900 mm to 1300
An object of the present invention is to provide a method for manufacturing a stone composite panel having a large panel of about mm × 2800 mm.

[0008]

The first object of the present invention is to:
In a method for manufacturing a stone composite panel in which a thin-layer stone material of a surface material is adhered with a honeycomb core as a backing, a honeycomb core without skins on both surfaces is used, and between the surface material and the honeycomb core and the honeycomb core. A fiber-reinforced thermosetting adhesive sheet is laminated on the opposite side of each, and a cushion material is interposed at least between the surface material and the hot press,
This was accomplished by hot pressing the laminate to bond the materials together.

A second object of the present invention is, in the above-mentioned method for manufacturing a stone composite panel, on the side opposite to the honeycomb core, a fiber-reinforced thermosetting adhesive sheet and a wire having a linear expansion coefficient close to that of the surface material. A plate material having an expansion coefficient is laminated, or a cushioning member having a downward convex shape in the widthwise central portion is interposed between the surface material and the hot pressing plate, and between the honeycomb core and the hot pressing plate. To the center of the width direction, or a cushion material in the form of a flat plate between the surface material and the hot plate of the press, and press the heat of the press in the downward direction of the center of the width direction. Achieved by using a hot press with a plate and a hot plate underneath the convex shape with a concave shape upward in the width direction.

A third object of the present invention is to provide a fiber-reinforced thermosetting adhesive sheet between the surface material and the honeycomb core and on the opposite side of the honeycomb core in the method for manufacturing a stone composite panel. And a laminate having the same structure are laminated so that one surface material faces the other surface material, and a cushion material is provided between the one surface material and the other surface material. This was accomplished by interposing and hot pressing the laminate.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
FIG. 1 is a drawing showing an example of the panel manufacturing method of the present invention. In FIG. 1, the fiber material reinforced thermosetting adhesive sheets 3 and 3 ′ are laminated between the stone material 1 and the honeycomb core 2 and on the back side of the honeycomb core 2, respectively, and the stone material 1 and a hot press (not shown) are used. Hot-press molding is performed with the cushion material 4 interposed therebetween.

Examples of stone materials used as the surface material 1 of the present invention include natural stone materials such as natural marble and granite, and various types of ceramics and artificial stone materials such as terrazzo. For natural stone, it is preferable to use a standard thin-layer stone material of 3 to 17 mm obtained by cutting a thick stone slab with a band saw or the like. The stone surface obtained by cutting with a band saw etc. has irregularities of up to about 0.8 mm, which is relatively smooth compared with the stone material cut with a conventional gang saw, but still take measures when hot-press forming. Otherwise, it will contribute to stone cracking. On the other hand, the artificial stone material can have any thickness and surface smoothness, and the surface thereof has almost no unevenness. Although such a stone material having a smooth surface may be used, in the present invention, a stone material having a low surface smoothness which cannot be used in the conventional hot press molding technique, for example, having unevenness of about 0.8 mm at maximum and having a thickness of 3 to 17 mm
It is possible to use a thin layer of stone material, but other materials may be used.

As the honeycomb core 2 used in the present invention, for example, a honeycomb core made of metal, resin or paper can be used. In the production of a conventional stone composite panel, a laminate in which a metal skin, a FRP skin or the like is previously attached to both surfaces of a honeycomb core to form a skin-honeycomb core-skin is used. Use a honeycomb core that is not attached (skinless honeycomb core). That is, in the manufacturing process of the stone composite panel, an unexpanded honeycomb core base material expanded into a predetermined shape is used as it is.
The honeycomb core preferably has a core thickness of about 5 to 50 mm and a cell size of about 6.3 to 12.7 mm.

As the fiber-reinforced thermosetting adhesive sheets 3 and 3 ', inorganic fibers such as glass fibers and carbon fibers, synthetic fibers such as polyester fibers, polyamide fibers and wholly aromatic polyamide fibers, and the like, and others A reinforcing fiber such as a natural fiber is formed into a shape such as a woven cloth, a non-woven cloth, or a filament, and is impregnated with a thermosetting resin such as an epoxy resin type, an unsaturated polyester resin type, or a polyurethane type. This fiber-reinforced thermosetting resin sheet not only adheres the stone material 1 and the honeycomb core 2 and forms a skin of the honeycomb core 2 when it hardens, but not only imparts excellent strength and durability to the stone material composite panel. The unevenness of the stone material 1 is held in the resin layer at the time of hot press molding so that stone cracking can be prevented. The thickness of the fiber-reinforced thermosetting adhesive sheet is usually about 0.05 to 1 mm, but from the viewpoint of the effect of preventing stone cracking, the thickness is the same as the uneven depth of the stone material 1 or slightly thicker than that. Those are preferable. The fiber-reinforced thermosetting adhesive sheet has a resin basis weight of 10
0~500g / m ² approximately, the reinforcing fiber content 100-700
It is preferably about g / m ² .

The hot press molding method of the present invention is applied to the stone material 1
And the honeycomb core 2 and the back side of the honeycomb core 2 with the fiber-reinforced thermosetting adhesive sheets 3 and 3 ′ laminated, at a temperature of 100 to 150 ° C. and a pressure of 0.5 to 15 kg / c.
It is performed by heating and pressurizing under the conditions of m ² and molding time of 20 to 60 minutes. Curing after molding is substantially unnecessary, and the productivity and workability of the molding process can be greatly improved.

In the present invention, during this hot pressing, pressing is performed with a cushion material 4 interposed in advance between the stone material 1 and the upper hot plate of the press to prevent stone cracks caused by the unevenness of the surface of the stone material. . This cushion material has suitable flexibility for absorbing irregularities on the surface of the stone material and suitable rigidity for transmitting the pressing pressure to the molding material. Further, it is preferable that this cushioning material is resistant to the temperature of hot pressing and can be repeatedly used from the viewpoint of economy. Examples of such cushioning materials include paper sheets (cardboard), fiber felt, leather, and the like. The shape may be matched with the shape of the hot press hot plate, or any shape such as matched with the shape of the molding material can be used. The thickness is usually preferably about 5 to 6 mm, and one having this thickness is used, or 1 mm.
You may stack several pieces of the same size.

Next, a second method of the present invention, that is, a method of manufacturing a stone composite panel with further reduced warpage will be described. When the inventor investigated the cause of this warp,
Coefficient of linear expansion of stone material 1 which is a surface material (about 5 to 7 x 10 ^-6 )
And the linear expansion coefficient of the skin layer (about 2 to 5 × 10 ⁻⁵ ) formed by curing the fiber-reinforced thermosetting adhesive sheet is different by one order, so there is a problem with the conventional cold press molding method of curing at room temperature. It was clarified that the cooling shrinkage that did not occur occurs remarkably in the hot press molding method. Therefore, in the present invention, the linear expansion coefficients of the stone material 1 and this layer are set to substantially the same level to reduce the warp, and the cooling shrinkage that causes the warp is canceled. This warp is alleviated by applying such a counter stress during hot press molding.

FIG. 2 is a drawing showing an example of a method for manufacturing a stone composite panel with reduced warpage. In FIG. 2, the cushioning material 4 is used when hot-pressing the fiber-reinforced thermosetting adhesive sheets 3 and 3 ′ laminated between the stone material 1 and the honeycomb core 2 and on the back side of the honeycomb core 2, respectively.
1 is similar to that of FIG. 1, except that the fiber-reinforced thermosetting adhesive sheet 3 ′ on the back surface side of the honeycomb core 2 has a plate material having a linear expansion coefficient close to that of the stone material 1. 5 is further laminated and hot press molded. Examples of such a plate material include a steel plate, a cement-formed plate, and a calcareous plate having a thickness of 0.2 to
A thin plate of about 1.3 mm may be used. As described above, by providing the plate material 5 having a linear expansion coefficient close to that of the stone material 1 on the back surface or both surfaces of the honeycomb core 2, the stone material 1 and a layer such as a honeycomb core integrated with the stone material 1 have substantially the same linear expansion coefficient. Having a coefficient of expansion, hot press molding allows the molding of panels with no or significantly reduced warpage.

FIG. 3 shows another example of a method for manufacturing a stone composite panel with reduced warpage. In FIG. 3, when hot-press molding a laminate in which the fiber-reinforced thermosetting adhesive sheets 3 and 3 ′ are laminated between the stone material 1 and the honeycomb core 2 and on the back side of the honeycomb core 2, as a cushion material, press A cushion material 4 having a downward convex shape in the width direction central portion is used on the hot plate side, and a cushion material 4'having a concave shape upward in the width direction central portion is used on the hot plate bottom side of the press. The convex or concave shape of this cushion material is measured by measuring the warpage of a panel hot-press molded using a flat plate-shaped cushion material, and then processing the cushion material so that it has a convex or concave shape that is almost equal to this. Good. In particular, when a plurality of sheet-shaped cushioning materials are used in a stacked manner, the shape can be easily produced by cutting and stacking the sheets. The material and thickness of the cushion material are the same as those described above. By using such a deformation cushion, it is possible to reduce the warp of the panel by applying a pressure in the opposite direction to the warp of the panel during pressing.

FIG. 4 shows an example of a panel manufacturing method for reducing the warp by changing the shape of the press hot plate in addition to the use of the cushion material. In FIG. 4, a flat cushion material 4 is used as the cushion material, and an upper press hot plate 6 having a downward convex shape in the widthwise central part and a lower press hot plate 6'having a concave shape in the widthwise central part are used. The convex or concave shape of this press hot plate is measured by measuring the warpage of a panel hot-press molded using a flat plate-shaped cushioning material. It should be processed. By using such a deforming press, it is possible to reduce the warp of the panel by applying a pressure in the opposite direction to the warp of the panel at the time of pressing.

Furthermore, stone breakage during panel manufacturing is reduced,
A panel manufacturing method by the hot press molding method which reduces the warp of the panel and has extremely high productivity will be described. FIG. 5 shows an example of such a panel manufacturing method. In FIG. 5, a laminate A in which the fiber-reinforced thermosetting adhesive sheets 3 and 3 ′ are laminated between the stone material 1 and the honeycomb core 2 and on the back side of the honeycomb core 2, and a laminate having the same configuration as this laminate B (stone 1'and honeycomb core 2 '
And the back side of the honeycomb core 2 ', which are laminated with the fiber-reinforced thermosetting adhesive sheets 3 "and 3'"), so that the stones 1 and 1'face each other,
Moreover, the cushion material 4 is interposed between the stone material 1 and the stone material 1'and hot press molding is performed. These stones,
The fiber-reinforced thermosetting adhesive sheet and the cushion material are the same as those described above. However, it is preferable that the cushion material 4 laminated between the two stone materials has a thickness of about 8 to 10 mm and is slightly thicker in order to absorb the unevenness of both the stone materials. By performing hot press molding with such a laminate structure, two stone composite panels can be manufactured by one hot press molding operation, and productivity can be significantly improved.

The examples of the panel manufacturing method of the present invention described above can be carried out by appropriately combining these.
For example, in order to reduce the warp of the panel, a plate material 5 having a linear expansion coefficient close to that of the stone material shown in FIG. 2 may be laminated, and the deformation cushions 4 and 4 ′ shown in FIG. 3 may be used. Alternatively, the deformation presses 6 and 6 ′ shown in FIG. 4 may be used. Further, in the two-sheet simultaneous molding method of FIG. 5, in order to reduce the warp of the panel, the fiber-reinforced thermosetting adhesive sheets 3 ′ and 3 ′ ″ are made of a plate material having a linear expansion coefficient close to that of a stone material. 5, 5'may be further laminated, the deformation press 6, 6'shown in FIG. 4 may be used, or this plate material and the deformation press may be used together. Further, in addition to these, it is also an embodiment of the present invention that the shape of the cushion material 4 is a deformed cushion having a convex lens cross section.

The stone composite panel of the present invention thus hot-press molded can be shipped as it is as a product depending on its use, but it is preferably surface-finished in order to enhance the commercial value. For surface finish,
For example, the main polishing, the water polishing, the water jet, the sand blast, etc. may be applied.

[0024]

EXAMPLES The present invention will be described in more detail below with reference to examples. The examples show one aspect of the present invention, and do not limit the present invention, and can be arbitrarily changed within the scope of the present invention.

Example 1 Raw marble stone (height 1.3 m × length 2.8 m × depth 1.
5 m) was sliced to a height of 1.3 m, a length of 2.8 m, and a thickness of 7 mm using a band saw, and used as it was as stone material 1 without secondary polishing. This surface had irregularities with a maximum of 0.8 mm. Also, a honeycomb core (core thickness: 17.
8 mm and cell size 6.3 mm) were used as the honeycomb core material 2. Further, an adhesive sheet (thickness: 1.2 mm, resin basis weight: 200 g / cm ² , reinforced fiber amount: 200 g / cm ² ) obtained by impregnating a glass fiber cloth with a bisphenol A type epoxy resin and a curing agent is used as a fiber-reinforced thermosetting adhesive sheet. Three
And 3 '.

Thermosetting adhesive sheet 3 ',
A honeycomb core 2, a thermosetting adhesive sheet 3, and a stone material 1 are laminated in this order, and further on the stone material 1 as a cushion material 4,
Five pieces of flat paper having a thickness of 1 mm, which is slightly larger than the stone material 1 and having a thickness of 1 mm, were stacked and laminated, and the laminate was hot-press molded to manufacture the stone composite panel shown in FIG. 1. The hot press molding conditions were a temperature of 135 ° C., a pressure of 1 kgf / cm ² and a molding time of 25 minutes.

The stone composite panel produced in this manner had almost no stone cracks, and the yield of hot press molding was 95%. Further, the plane tensile strength of the stone composite panel was measured and found to be 20 kgf / cm ² or more. Furthermore, when the stone surface was subjected to main polishing and a light beam was obliquely applied to the surface and observed with the naked eye, products with large warpage were removed, and the final product yield was 90%.

Comparative Example 1 A stone composite panel was manufactured under the same materials and molding conditions as in Example 1 except that the cushion material 4 was not used in Example 1 above. As a result, many stone cracks were formed in the length direction of the stone 1. Occurred. The yield of hot press molding is only 10%,
It was completely unusable.

Example 2 As the stone material 1, the honeycomb core 2, the fiber-reinforced thermosetting adhesive sheets 3, 3'and the cushion material 4, the same materials as in Example 1 were used, and the plate material 5 was a thin steel plate having a thickness of 1 mm. Was used to produce the stone composite panel of FIG. The fiber-reinforced thermosetting adhesive sheet 3 ', the honeycomb core 2, the fiber-reinforced thermosetting adhesive sheet 3, and the stone material 1 are laminated in this order on the plate material 5, and the cushion material 4 is further laminated on the top. Was hot-press molded under the same conditions as in Example 1.

The stone composite panel produced in this manner had almost no stone cracks, and the yield of hot press molding was 96%. Further, the plane tensile strength of the stone composite panel was measured and found to be 20 kgf / cm ² or more. Further, the stone surface was subjected to final polishing, a light beam was obliquely applied to the surface, and the surface was observed with the naked eye to remove products with large warpage, and the final product yield was 94%.

Example 3 The same stone material 1, honeycomb core 2 and fiber-reinforced thermosetting adhesive sheets 3, 3'as in Example 1 were used.
On the upper hot plate side of the press, a cushion material 4 having a downward convex shape in the center in the width direction was used, and on the lower hot plate side of the press, a cushion material 4 ′ having an upward concave shape in the central part in the width direction was used.
The cushioning material 4 is a cardboard having a thickness of 1 mm, which is the same as that of the first embodiment, and one sheet having a flat plate shape and an elliptical sheet having its peripheral portion cut off. Only the top layer in contact with the heat plate has a flat plate shape,
The lowermost layer was laminated so that the area was smaller, and the most convex portion had a height of 4 mm. Also, cushion material 4 '
On the contrary to the cushion material 4, only the lowermost layer in contact with the lower hot plate of the press was formed into a flat plate shape, and the uppermost layer was laminated so that the area became larger, and the most recessed portion had a shape having a depth of 4 mm.
This laminate was hot pressed under the same conditions as in Example 1.

The stone composite panel thus produced had almost no stone cracks, and the yield of hot press molding was 95%. Further, the plane tensile strength of the stone composite panel was measured and found to be 20 kgf / cm ² or more. Furthermore, when the stone surface was subjected to final polishing, a light beam was obliquely applied to the surface, and the surface was visually observed to remove products with large warpage, the final product yield was 93%.

Example 4 The same stone material 1, honeycomb core 2, fiber-reinforced thermosetting adhesive sheets 3, 3'and cushion material 4 as in Example 1 were used, and the hot press hot plate was modified. For the upper press hot plate 6, a downward convex shape in the center of the width direction, and the highest convex part having a height of 4 mm was used.
The central part in the width direction is concave upward, and the deepest concave part is 4 m deep.
m. This was hot-press molded under the same conditions as in Example 1.

The stone composite panel thus produced had almost no stone cracks, and the yield of hot press molding was 95%. Further, the plane tensile strength of the stone composite panel was measured and found to be 20 kgf / cm ² or more. Furthermore, when the stone surface was subjected to final polishing, a light beam was obliquely applied to the surface, and the surface was visually observed to remove products with large warpage, the final product yield was 93%.

Example 5 Stone materials 1, 1 ', honeycomb cores 2, 2', fiber-reinforced thermosetting adhesive sheets 3, 3'3 ", 3"'and cushion materials 4
Was the same as in Example 1. The thermosetting adhesive sheet 3 ′ ″, the honeycomb core 2 ′, the thermosetting adhesive sheet 3 ″, and the stone material 1 ′ are laminated in this order to form a laminate B, and the cushion material 4 is placed on the stone material 1 ′. Further, on the cushion material 4, the stone material 1, the thermosetting adhesive sheet 3, the honeycomb core 2, and the thermosetting adhesive sheet 3 ′ were laminated in this order to form a laminate A. This laminate was hot press molded to produce two stone composite panels at the same time. The conditions for this hot press molding are the same as in Example 1.

The stone composite panel thus produced had almost no stone cracks, and the yield of hot press molding was 94%. Further, the plane tensile strength of the stone composite panel was measured and found to be 20 kgf / cm ² or more. Furthermore, when a light beam was obliquely applied to the surface and the product was visually observed to remove a product having a large warp, the final product yield was 92%. Further, the productivity of the hot press molding process was 180% of that in Example 1, which was a remarkable improvement.

[0037]

As described above, the present invention described above reduces the stone cracks at the time of manufacturing a panel and omits the manufacturing process of the laminated body of skin-honeycomb core-skin, thereby improving the productivity and work of manufacturing a stone composite panel. It is possible to significantly improve the sex. In addition, it is possible to reduce the warp of the panel, which has heretofore been unavoidable by the hot press molding method, and improve the final product yield. Further, according to the hot press molding method of the present invention, not only a small plate slab of about 900 mm × 900 mm but also a large plate panel of about 1500 mm × 300 mm can be efficiently manufactured.

[Brief description of drawings]

FIG. 1 is a drawing showing an example of a panel manufacturing method of the present invention.

FIG. 2 is a drawing showing an example of the panel manufacturing method of the present invention in which warpage is reduced.

FIG. 3 is a drawing showing another example of the panel manufacturing method of the present invention in which warpage is reduced.

FIG. 4 is a view showing another example of the panel manufacturing method of the present invention in which the warpage is reduced.

FIG. 5 is a drawing showing an example of a method of simultaneously molding two panels.

[Explanation of symbols]

1, 1'Stone material 2, 2'Honeycomb core 3, 3 ', 3'',3''' Fiber reinforced thermosetting adhesive sheet 4, 4'Cushion material 5 Plate material 6 Hot press upper hot plate 6'Hot press lower Hot plate A, B laminate

Claims (5)

[Claims] 1. A method for manufacturing a stone composite panel comprising a thin layer stone material as a surface material and a honeycomb core lined and adhered to the surface material, wherein a honeycomb core having no skin on both sides is used, and the surface material and the honeycomb core are And a fiber-reinforced thermosetting adhesive sheet are laminated on the space and on the opposite side of the honeycomb core, and a cushioning material is interposed at least between the surface material and the hot press, and the laminate is hot-press molded to form each A method for manufacturing a stone composite panel, which comprises simultaneously bonding materials. 2. A method of manufacturing a stone composite panel comprising a thin layer stone material as a surface material and a honeycomb core backed and adhered to the fiber core material, the fiber-reinforced thermosetting adhesive sheet and the linear expansion of the surface material on the opposite side of the honeycomb core. The method for manufacturing a stone composite panel according to claim 1, wherein plate materials having a linear expansion coefficient close to the coefficient are laminated. 3. A method for manufacturing a stone composite panel comprising a thin layer stone material as a surface material and a honeycomb core lined and adhered to the surface material. The method for manufacturing a stone composite panel according to claim 1 or 2, wherein the cushioning material having a concave shape in the center in the width direction is interposed between the backing material and the hot plate under press. 4. A method for manufacturing a stone composite panel comprising a thin layer stone material as a surface material and a honeycomb core lined and adhered to the surface material, wherein a flat cushion material is interposed between the surface material and the hot plate for pressing, and a width direction is applied. The method for producing a stone composite panel according to claim 1 or 2, wherein a hot press having a press upper hot plate having a central downward convex shape and a convex press lower hot plate having a concave upward central portion is used. . 5. A method for manufacturing a stone composite panel comprising a thin-layer stone material as a surface material and a honeycomb core backed and bonded, wherein a fiber-reinforced heat is applied between the surface material and the honeycomb core and on the opposite side of the honeycomb core. A laminate formed by laminating curable adhesive sheets and a laminate having the same structure are laminated so that one surface material faces another surface material, and between the one surface material and another surface material. The method for manufacturing a stone composite panel according to claim 1 or 2, wherein a cushion material is interposed in the laminate, and the laminate is hot-press molded.