JP3243186U - Reanimated disk-shaped member of Ryukyu limestone - Google Patents

Abstract

[Problem] Even if through holes appear in the limestone main part of the Ryukyu limestone formed in a board-like body, not only the strength but also the appearance quality can be secured, and the size of the board-like body can be used to create Ryukyu products. Provided are a limestone revival board-shaped member and its resin molding material. SOLUTION: It is made of Ryukyu limestone, and a flat surface 2a side board surface and a back surface 2b on the opposite side are also formed in a board-like body rectangular in plan view with a flat board surface, and from the board surface on the side of the surface 2a to the board surface on the side of the back surface 2b. consists of a limestone main portion 2 through which a through hole 21 made of an uneven hole wall 211 penetrates, and a hardening portion R of a resin molding material, which is joined and integrated with the limestone main portion 2 by filling the through hole 21; and a transparent or translucent resin-made replenishment part 3 in which a surface-side flat surface of the hardening part R is formed so as to match the surface-side board surface of the flat surface 2a at the opening 210 of the through-hole 21 appearing on the surface side. , wherein the resin molding material is a liquid resin molding material containing a thermosetting resin as a main material at room temperature. [Selection drawing] Fig. 2

Description

The present invention relates to a board-like member regenerated from Ryukyu limestone that is cut into a board-like body and commercialized for construction members, tables, top plates of cabinets, and the like.

Natural stones such as Ryukyu limestone are quarried in the production area in the form of roughly rectangular blocks, and transported from the production area to stone processing manufacturers. A stone processing manufacturer cuts the large block into a predetermined thickness and processes it into a board-shaped product, but since natural stone is used, there are lumps that cannot be used as a board-shaped product during the processing stage. .
Therefore, several inventions have been proposed to make effective use of the unusable chunks (for example, Patent Document 1).

JP-A-2000-127134

However, as described in claim 1 of Patent Document 1, "a imitation stone obtained by cutting from a base stone formed by mixing natural stone in concrete, the cut surface of which has at least a maximum diameter of 100 mm or more. It is limited to the invention of imitation stone characterized by including a face. Since the concrete surrounds the natural stone, even if it is used effectively, its commercial value is lower than that of the natural stone. Even though natural stone is expensive, it is only offered as a low cost material for low cost products.
In addition to the imitation stone mentioned above, the chunks of this Ryukyu Limestone that are out of product standards have been offered at low prices as small-sized materials such as crushed stone and kajiki stone.

In a stone material processing manufacturer, a large block of natural stone is usually first cut into a disc-like body, and then proceeded to the next product process. If the natural stone is Ryukyu limestone, it is mainly reef limestone formed by the action of coral reefs. A through hole penetrating to the opposite side board surface may appear on the outer side board surface that appears at the bottom. In such a case, there is a risk that the Ryukyu limestone may not be strong enough to be used as a board product, and a board-like body with through holes has not been produced as a final product.
Larger and more expensive board-shaped bodies having defects in through-holes and falling out of product specifications are crushed into small pieces and used as the above-mentioned imitation stone, crushed stone, or intermittent stone. Even if the non-standard board-shaped body is used, it takes time and cost to break it into small pieces, and yet there is a problem that only low-priced products can be produced.

The present invention is intended to solve the above problems. It is an object of the present invention to provide a revival board-like member of Ryukyu limestone that can be made into a product that takes advantage of its size, and a method for manufacturing the revival board-like member.

In order to achieve the above object, the gist of the device according to claim 1 is formed into a plate-like body that is rectangular in plan view and is made of Ryukyu limestone and has a flat front surface and a flat back surface on the opposite side. It consists of a limestone main part through which a through hole made of an uneven hole wall penetrates from the front side board surface to the back side board surface, and a hardened part of a resin molding material, and the through hole is filled into the limestone main part. a transparent or semi-transparent resin replenishment part which is joined and integrated and has a surface-side flat surface of the hardening part formed at the mouth of the through-hole appearing on the surface side, and which is aligned with the flat surface-side board surface; and wherein the resin molding material is a liquid resin molding material containing a thermosetting resin as a main material at room temperature. According to claim 2, the Ryukyu limestone revival board-shaped member is the limestone main part of claim 1, which is divided into two limestone halves separated by a groove, and the hardened part of the resin molding material. Then, the groove is filled and the two limestone halves are joined and integrated, and the surface side flatness of the hardened part is aligned with the flat surface side board surface of the limestone halves at the surface side groove mouth of the groove. It is characterized by further comprising a transparent or translucent resin-made connecting part on which a surface is formed. According to Claim 3, the Ryukyu Limestone reanimated board-shaped member according to Claim 1 has an uneven portion that is intricately exposed in the thickness direction and width direction on the side end surface of the board-shaped body related to the limestone main portion. On the other hand, the rugged portion is filled with the hardened portion to be joined and integrated with the side end face of the limestone main portion, and has flat surfaces on the front side and the back side that are aligned with the flat surface side and the back side of the board, respectively. A transparent or translucent resin-made replenishment disk portion is formed extending outward from the side end face with a thickness matching the thickness of the main portion of the limestone, and a side peripheral end face of the replenishment disk portion is formed. It is characterized by being formed smoothly. The Ryukyu limestone revival board-shaped member devised in claim 4 is, in claim 1 or 2, provided with a plurality of the limestone main parts that are rectangular in plan view, and the flat surface side board faces are flush with a gap. and the hardened portion serves as a joint portion that fills the gap and is integrally joined to the limestone main portion that creates the gap.

The resuscitated Ryukyu limestone board-shaped member of the present invention is a non-defective product that maintains the size of the board-shaped body of Ryukyu limestone, which has been difficult to make into a product due to the through holes found on the board surface. Furthermore, by making the hardened part transparent or semi-transparent, the natural expression created by the walls of the through holes can be visually recognized, and it is possible to produce a product with higher added value.

1 is a perspective view of a resuscitation board-shaped member made of Ryukyu limestone according to Embodiment 1. FIG. FIG. 10 is a perspective view of a resuscitation board-shaped member made of Ryukyu limestone according to Embodiment 2; In Embodiment 3, (A) and (B) are schematic plan views showing the manufacturing process of a reanimated board-shaped member of Ryukyu limestone, and (C) is a reanimated board-shaped member made through the processes of (A) and (B). It is a top view of a member. 3A to 3D are explanatory cross-sectional views showing respective manufacturing steps of the resuscitation board-shaped member of FIG. 1 in order from (a) to (d). It is explanatory sectional drawing which shows the manufacturing process following FIG.4(d), (c) is a VV line sectional drawing of FIG. It is an explanatory plan view in which a plurality of concave limestone main portions are arranged with a gap therebetween. (b) is an explanatory plan view in which a joint is formed in the gap in FIG. 6, and (c) is a cross-sectional view taken along the line VII-VII of (b). FIG. 3 is an explanatory image diagram of FIG. 2; FIG. 4 is an image diagram of FIG. 3(c); FIG. 7 is an explanatory image diagram of FIG. 6(b); FIG. 4 is an image diagram of a pedestal formed using a plurality of Ryukyu limestone reanimated board-like members shown in FIGS. 1 and 3 ;

Hereinafter, the Ryukyu limestone reanimation board-like member (hereinafter also simply referred to as "reanimation board-like member") according to the present invention will be described in detail.
1 to 11 show one embodiment of the resuscitation board-shaped member of the present invention, FIG. 1 is a perspective view of the resuscitation board-shaped member of Embodiment 1, FIG. 2 is a perspective view of the resuscitation board-shaped member of Embodiment 2, and FIG. is Embodiment 3, (A) and (B) are schematic plan views showing the manufacturing process of the reanimation board-like member, and (C) is the reanimation board-like member made through the processes of (A) and (B). It is a top view. 4 is a cross-sectional view showing the manufacturing process of FIG. 1, FIG. 5 is a cross-sectional view showing the manufacturing process following FIG. 7(b) is a plan view of forming a joint part in the gap in FIG. 9 is an image diagram of FIG. 3(c), FIG. 10 is an image diagram of FIG. 6(a), and FIG. In each drawing, the essential parts are emphasized for easy understanding, and the parts not directly related to the present invention are omitted.

(1) Revival board-shaped member of Ryukyu limestone (1-1) Embodiment 1
This resuscitation board-like member 1 is a board-like body as shown in FIGS.
The limestone main part 2 is made of Ryukyu limestone, and at least one surface on the side of the front surface 2a is formed into a flat plate-like body, and a through hole 21 penetrates from the board surface on the side of the front surface 2a to the board surface on the side of the back surface 2b. The Ryukyu Limestone is a limestone stratum widely distributed in the Nansei Islands. Formed by the actions of corals, molluscs, lime algae, etc., it is mainly composed of reef limestone that has accumulated their remains.

Ryukyu limestone, which is transported to a stone material manufacturer in the form of a large block, is cut into a predetermined thickness t2 and made into a board-like body. In some cases, it becomes a limestone main part 2 as shown in FIG. The depression 24 has a concave cross-section as shown in FIG. There is a risk that the limestone main portion 2 having the The through hole 21 is formed from Ryukyu limestone by the diagenesis of corals and other bodies, and therefore the through hole 21 itself is often large and the opening 210 is widened like a crack. In addition, the uneven surface 211a of the hole wall 211 forming the through hole 21 is severely uneven and uneven.

The limestone main portion 2 has a flat board surface on the front surface 2a side of the board-like body, and it is preferable that the back surface 2b on the opposite side is also formed on a flat board surface. This is because the range of applications will expand. In order to improve versatility, it is more preferable to form a rectangular shape in plan view. Here, the board-shaped body of the present invention includes a plate body having a flat front surface 2a and a back surface 2b. The thickness t2 of the plate is in the range of 1.0 cm to 4.0 cm.
According to the present invention, the hardened portion R of the resin molding material is joined and integrated with the through hole 21 to reinforce the strength of the limestone main portion 2, thereby commercializing the plate-like member with the large plate surface including the through hole 21 as it is. enable. A replenishment part 3 is provided to bury the hardened part R in a through hole 21 appearing on the surface 2a of a plate-like body cut from a large lump of Ryukyu limestone to a predetermined thickness and to be integrated with the limestone main part 2. - 特許庁In addition, when the hollow 24 appears, the filling part 7 which fills and integrates the hardening part R is provided.

The replenishment part 3 is made of a hardened part R of a resin molding material, and is a solid resin material that fills the through holes 21 and is joined and integrated with the limestone main part 2 . At the opening 210 of the through hole 21 appearing on the surface 2a side of the limestone main portion 2, the surface-side flat surface 3a of the hardened portion R is formed in conformity with the flat surface-side board surface 2a.
Here, in the present invention, "the resin replenishment part in which the surface side flat surface of the hardened part is formed in accordance with the flat surface side plate surface at the opening of the through hole appearing on the surface side of the limestone main part" is not only the case where the front side flat surface 3a is flush with the front side board surface 2a as shown in FIG. A thin film layer R1 is provided, and the flat surface 3a of the cured portion R filling the hole 210 is made flush with the surface of the thin film layer R1, and a replenishing portion 3 is included along the surface level of the front side board surface 2a. This is because this state also has the same effect as the one in FIG. 5(c). The thin film layer R1 made of the resin molding material has a higher surface gloss and watertightness than the limestone main portion surface 2a, and is rather preferable depending on the application.
In this embodiment, the limestone main portion 2 is made into a rectangular plate, and the back hole 219 appearing on the back surface 2b side is also formed with the back flat surface 3b of the hardened portion R that matches the back surface 2b. The filling part 3 made of the hardening part R made of resin is transparent or semi-transparent, and through the filling part 3, there is a hole having an uneven surface 211a of the through hole 21 which is in the natural state of Ryukyu limestone without human intervention. A wall 211 is visible. The natural expression enhances the product value. In the present invention, the replenishing portion 3 is translucent, and it is sufficient if the hole wall 211 can be visually recognized through the hardened portion R of the replenishing portion 3 .

The resin molding material of the replenishment part 3 may be a thermoplastic resin, but it is preferably a resin molding material that is liquid at room temperature and is mainly composed of a thermosetting resin. Since it is liquid at room temperature, it is easy to manufacture the resuscitation board-shaped member 1 . Furthermore, it is more preferable that the resin molding material is a liquid resin molding material at normal temperature, which has an unsaturated polyester resin as a main material, has a substantially colorless and transparent appearance, and is easy to use. A viscous liquid resin molding material obtained by adding, for example, methyl ethyl ketone peroxide (MEKP) as a main catalyst and, for example, cobalt naphthenate as an accelerator to this is filled in the through holes 21 to cure at room temperature. A molding die for the replenishment part 3 can be simplified, and molding becomes easy. A resin replenishment portion 3 consisting of a colorless or translucent cured portion R is formed. The liquid resin molding material penetrates into every corner of the through hole 21 and bites into the hole wall 211 having the uneven surface 211a of the through hole 21 when hardened.
The replenishment part 3, which fills the through hole 21 of the limestone main part 2 and forms the surface side flat surface 3a matching the surface side board surface 2a of the limestone main part 2 at the hole mouth 210, bites into the uneven hole wall 211 and serves as an anchor. The desired resuscitated board-like member 1 is firmly integrated with the limestone main portion 2 by exerting its effect.

As for the resin molding material, liquid resins such as epoxy resins and diallyl phthalate resins can be used as the main material, but unsaturated polyester resins are preferable because transparent or translucent replenishment portions 3 can be formed at a relatively low cost. The unsaturated polyester resin has excellent fluidity and adhesiveness, and is required to have a bonding strength with the limestone main portion 2. As a hit. When the unsaturated polyester resin is used as the main material, benzoyl peroxide (BPO) may be used as the main catalyst component and dimethylaniline as the accelerator in place of the MEKP and cobalt naphthenate described above, and cured at room temperature. Additives such as stabilizers, reinforcing agents, fillers and coloring agents are appropriately added to the resin molding material.

(1-2) Embodiment 2
The resuscitation board-like member 1 comprises a limestone main part 2, a replenishment part 3 and a replenishment board part 5 as shown in FIG. FIG. 8 is an image diagram of FIG.
In addition to the through holes 21 of the first embodiment, the limestone main portion 2 has uneven portions 251 exposed on the side end surfaces 25 of the plate-like body intricately in the thickness and width directions of the plate-like body. The rock surface of the Ryukyu limestone may appear as it is on the side end face 25 of the limestone main part 2 cut into a plate-like body from the Ryukyu limestone. This rock surface has irregularities not only in the thickness direction of the board but also in the width direction of the side end face 25. However, since the strength is insufficient, the rock surface has been cut off before being commercialized. However, the rock surface part is a beautiful part where the natural expression created by the coral reef appears, and if the strength can be secured, the application will be expanded not only to building members but also to table tops and decorative stands. This embodiment further includes not only the replenishment part 3 that fills the through hole 21, but also the replenishment board part 5 that fills the concave and convex portions 251 of the side end surface 25 and adjusts the shape.

The replenishment board part 5 is made of a resin that is integrally joined to the limestone main part 2 by filling the concave and convex portions 251 exposed on the side end face 25 of the limestone main part 2 with the same hardened part R of the resin molding material as the replenishment part 3 . Solid. Reference numeral 55 indicates a joint surface with the side end face 25 .
Specifically, it has flat surfaces 5a and 5b on the front side and the back side that are aligned with the flat surfaces 2a and 2b on the front side and the back side of the limestone main part 2, respectively, and the limestone main part from the side end face 25 A replenishment board portion 5 made of resin is formed extending outward with a thickness t5 that matches the board-like thickness t2 of 2. As shown in FIG. Furthermore, the side peripheral end face 56 of the replenishment disk portion 5 is formed smoothly, and the replenishment disk portion 5 is integrally joined to the limestone main portion 2 . In this embodiment, the back surface 2b of the limestone main part and the back surface 5b of the replenishment board part are flattened to form a resuscitation board-like member 1 having a rectangular plate in plan view as shown in FIG. The area of the limestone main portion 2 is set larger than the area of the replenishment plate portion 5 in plan view of the resuscitation plate-like member 1 . It is only a replenishment board part 5 that replenishes the limestone main part 2 of the main part, and by making use of the uneven part 251 where the rock surface is exposed on the side end face 25, the large limestone main part 2 having the uneven part 251 remains as it is. This is because it is to be 1.
Similar to the replenishment part 3, the replenishment board part 5 is also transparent (or translucent) as shown in FIG. can.

The replenishment board part 5, which fills the uneven part 251 where the rock surface of the limestone main part 2 is exposed and is integrally joined to the side end surface 25, relies not only on the adhesive strength of the resin molding material, but also on the unevenness of the board-like body side end surface 25. The hardened portion R of the resin molding material bites into the intricate concave and convex portion 251 , exerting an anchoring effect of mechanical coupling, and the desired reanimated disc-like member 1 that is firmly integrated with the limestone main portion 2 is obtained.
Other configurations such as the through hole 21 and the replenishment portion 3 are the same as those of the first embodiment, and the description thereof will be omitted. The same reference numerals as in Embodiment 1 indicate the same or corresponding parts.

(1-3) Embodiment 3
This resuscitation board-like member 1 comprises a limestone main portion 2, a replenishment portion 3 and a connecting portion 4 as shown in FIG. 3(c). FIG. 9 shows an image view of FIG. 3(c).
The limestone main portion 2 of the first embodiment is divided into two limestone halves 2A and 2B with a groove 22 interposed therebetween. Ryukyu limestone made of natural stone has through holes 21 and large cracks. There are cases where The groove 22 according to the present invention does not have a limestone groove bottom between the two limestone halves 2A and 2B. A grooved wall 221 in which the halves 2A and 2B form the groove 22 reveals a beautiful rock surface woven by nature. A resin connecting portion 4 fills the groove 22 with the hardened portion R of the resin molding material to connect and integrate the two limestone halves 2A and 2B.

The connecting part 4 is also transparent or semi-transparent like the replenishing part 3, and even when the resuscitation board-like member 1 is formed, the grooved wall 221 with unevenness can be visually recognized through the connecting part 4, and the natural expression created by the coral reef of Ryukyu limestone. can see Incidentally, in FIG. 9, the connecting portion 4 and the supplementing portion 3 are colored bluish and are in a translucent state.
The connecting portion 4 forms a surface-side flat surface 4a of the hardened portion R at the surface-side groove mouth of the groove 22, which is aligned with the flat surface-side board surfaces of the limestone halves 2A and 2B. The back-side groove mouth of the groove 22 also forms the back-side flat surface 4b of the hardened portion R that matches the flat back-side board surface 2b of the limestone halves 2A and 2B.

The connecting portion 4, which fills the groove 22 formed by the two halves of the limestone main portion 2 and is integrally joined to the grooved wall 221 having unevenness, not only depends on the adhesiveness of the resin molding material. 3, the hardened portion R of the resin molding material bites into the grooved wall 221, which forms the groove 22 and has an intricate unevenness. is a resuscitation board-shaped member 1.
Other structures such as the through hole 21 and the replenishment portion 3 are the same as those of the first and second embodiments, and the description thereof will be omitted. The same reference numerals as in Embodiments 1 and 2 indicate the same or corresponding parts.

(1-4) Embodiment 4
This resuscitation board-like member 1 comprises a plurality of limestone main parts 2, supplementary parts 3, joint parts 4 and joint parts 6, as shown in FIGS.
A plurality of limestone main portions 2 of Embodiments 1 and 3, which are rectangular in plan view, are provided. Each limestone main portion 2 is arranged so that the flat surface side board surface 2a is flush with a gap ε. Here, a plurality of limestone main parts 2 are arranged to form a passage floor as shown in FIG. FIG. 10 is an explanatory image diagram of FIG.
The width of the gap ε is set to be substantially equal, and a joint portion 6 that fills the gap ε is provided as shown in FIG. The joint portion 6 is made of the same hardened portion R of the resin molding material as the replenishing portion 3, and is integrally joined to the limestone main portion 2 that fills the gap ε and creates the gap ε.
Other configurations of the through hole 21, replenishment portion 3, connecting portion 4, etc. are the same as those of Embodiments 1 to 3, and the description thereof will be omitted. The same reference numerals as in Embodiments 1 to 3 indicate the same or corresponding parts.

(2) Method for producing resuscitated board-shaped member of Ryukyu limestone (2-1) Embodiment 1
This resuscitation board-like member manufacturing method is one manufacturing method of the resuscitation board-like member shown in FIG. As shown in FIGS. 4 and 5, after the limestone main portion 2 including the through hole 21 is immersed in a liquid resin molding material, the resin molding material is cured to fill the through hole 21 and join the limestone main portion 2. The integrated transparent or translucent resin replenishment part 3 is molded.

Prior to manufacture, a liquid resin molding material, a limestone main portion 2, and a recessed mold 8 having an upper surface opening in which the limestone main portion 2 can be immersed in the resin molding material are prepared. The recessed mold 8 is made of a wooden mold, which is slightly larger than the limestone main part 2, and the limestone main part 2 is placed sideways on the mold bottom 81 of the recessed mold 8 as shown in FIGS. When the vertical wall 82 is higher than the upper surface of the limestone main portion 2, the recessed mold 8 is formed. Although not shown, a watertight sheet is adhered to the inner surface of the concave mold 8 in close contact therewith.
The resin molding material is a liquid resin molding material at room temperature that forms a transparent or translucent cured portion R. In this case, the mixture solution E is composed of an unsaturated polyester resin as a main material, methyl ethyl ketone peroxide, and cobalt naphthenate. The limestone main part 2 is made of Ryukyu limestone as described above, and at least one surface on the side of the front surface 2a is formed into a flat board-like body, and the board surface on the side of the front surface 2a to the board surface on the side of the back surface 2b has uneven pore walls. A through hole 21 by 211 penetrates.

Using the limestone main part 2 and the recessed mold 8, the limestone main part 2 formed of a rectangular plate as shown in FIG.
First, as shown in FIG. 4(a), the solution E of the resin molding material is injected until the entire bottom surface 81 of the concave mold 8 is immersed. Next, the limestone main portion 2 is erected on the concave mold 8, and the solution E of the resin molding material is applied to the back surface 2b of the limestone main portion 2 with a brush K or the like (Fig. 4B). Symbol E1 indicates a solution film. This is to prevent residual air traces from appearing in the replenishing portion 3 and voids from forming in the through hole 21 when the product is produced.

Subsequently, the limestone main part 2 that has been smeared is put down in the recessed mold 8 so that the back surface 2b side faces downward, and is placed on the bottom surface 81 of the recessed mold (C in FIG. 4). Although the liquid level E0 of the resin molding material solution E rises by placing the limestone main portion 2, it does not reach the surface 2a of the limestone main portion 2. As shown in FIG.
After that, the solution E of the resin molding material is injected until it exceeds the surface 2a of the main limestone portion 2 in the recessed mold 8, and the main limestone portion 2 is submerged (D in FIG. 4). The limestone main portion 2 is immersed in the solution E of the resin molding material, and the inside of the through hole 21 and the inside of the recess 24 are filled with the solution E.

After that, it is allowed to stand for a predetermined time (here, about three days) in the state shown in FIG. In curing at room temperature, although illustration is omitted, after the limestone main part 2 is submerged in the solution E of the resin molding material, the upper opening of the concave mold 8 is covered with an upper lid, and the pressure inside the concave mold 8 sealed with the lid is reduced. Alternatively, residual air in the through holes 21 and the like may be forcibly removed.

The state of FIG. 4(d) is left for a predetermined period of time to harden the resin molding material at room temperature. After molding the replenishment portion 3, the limestone is submerged in the solution E of the resin molding material, surrounded by the hardened portion R and integrated. The main part 2 is removed from the mold (a in FIG. 5).
In the state of FIG. 5(a), an unnecessary hardened portion R is fixed around the limestone main portion 2 in the form of a cavity of the concave mold 8. In FIG.
Therefore, for example, as shown in FIG. A resuscitation board-like member 1 integrated with a replenishment part 3 is obtained. Although illustration is omitted, a thin film layer similar to the thin film layer R1 may be left on the limestone main portion back surface 2b.
Further, if the thin film layer R1 of the limestone main portion surface 2a is also scraped off, the desired resuscitated Ryukyu limestone plate-like member 1 in which the limestone main portion 2 and the resin replenishment portion 3 are integrated as shown in FIG. 1 is obtained.

Incidentally, in FIG. 4(C), if there is an uneven portion 251 having a rock surface as shown in FIG. A resuscitation board-like member 1 having a resin replenishment board portion 5 which is filled with R and joined and integrated with the side end surface 25 of the limestone main portion 2 is obtained. The rest of the configuration is the same as in (1) Ryukyu Limestone revived board-like member, and will be omitted. The same reference numerals as (1) indicate the same or corresponding parts.

(2-2) Embodiment 2
This embodiment is a method of manufacturing the resuscitation board-like member shown in FIGS. The recessed mold 8 is sized to accommodate the two limestone halves by forming a groove 22, and when the limestone main part 2 is placed sideways on the mold bottom 81 of the recessed mold 8, the vertical wall 82 of the limestone main part 2 is formed. Make it higher than the top.

First, on the mold bottom 81 of the concave mold 8, as shown in FIG. 3(a), two limestone halves 2A and 2B are placed facing each other across a groove 22 of a required width. At this time, the positions of the two limestone halves 2A and 2B on the bottom 81 of the mold are adjusted in the vertical and horizontal directions of the paper surface in FIG. do. The limestone halves 2A and 2B are previously coated with the solution E of the resin molding material in the same manner as in (2-1).

Next, the solution E of the resin molding material is injected until it exceeds the surfaces 2a of the limestone halves 2A and 2B in the recessed mold 8, and the limestone main portion 2 is submerged (FIG. 3B). By immersing the limestone main portion 2 in the solution E of the resin molding material, the inside of the through hole 21 and the inside of the recess 24 are filled with the solution E.
Then, the state shown in FIG. 3(b) is left for a predetermined period of time to allow the resin molding material to harden at room temperature, thus completing the molding of the resin connecting portion 4 (FIG. 3(c)).

After that, the limestone halves 2A and 2B, which were submerged in the solution E of the resin molding material in the recessed mold 8 and surrounded by the hardened portion R, were demolded, and the unnecessary hardened portion R was removed by trimming. The product shown in solid lines in FIG. 3(C) is used. At this time, the limestone halves 2A and 2B are formed into a rectangular reanimation board-like member 1 by shaving off the portions projecting outward on the top, bottom, left, and right of the paper surface of FIG. 3(a). A desired resuscitation board-like member 1 is obtained in which a transparent or translucent joint 4 fills the groove 22 and is integrally joined to the two limestone halves 2A and 2B. The rest of the configuration is the same as (2-1), so the description thereof is omitted.

(2-3) Embodiment 3
This embodiment is a method of manufacturing a resuscitation board-like member as shown in FIG.
A plurality of limestone main parts 2 having a rectangular shape in plan view are prepared, and a recessed mold 8 is prepared so that the flat surface side plates 2a of the limestone main parts 2 can be placed flush with each other with a gap ε (FIG. 6). The standing wall 82 is set so as to be large enough to accommodate all the main limestone parts 2 and to be higher than the upper surface of the main limestone parts 2 when the limestone main parts 2 are horizontally placed on the mold bottom 81 of the recessed mold 8 (Fig. 4 C).
First, as shown in FIG. 6, on the mold bottom 81 of the recessed mold 8, the plurality of limestone main parts 2 and the limestone half-split parts 2A and 2B are arranged with a gap ε, and each surface side board surface 2a is flush. set. Reference numeral 23 indicates cracks. Limestone main part 2 and limestone half parts 2A and 2B are coated with solution E of a resin molding material on their rear surfaces 2b in the same manner as in (2-1) prior to setting.

Next, the solution E of the resin molding material is injected until it exceeds the surface 2a of each limestone main part 2 and the limestone half parts 2A and 2B in the concave mold 8, and the limestone main part 2 is submerged in the solution E. (See D in FIG. 4). By immersing the limestone main portion 2 and the limestone halves 2A and 2B in the solution E in the concave mold 8, the gap ε, the groove 22, the through hole 21, and the crack 23 are filled with the solution E.
This state is left for a predetermined time to cure the resin molding material at room temperature. After that, when the mold is removed, the joint portion 6 of the cured resin portion R filling the gap ε is formed as shown in FIGS. 7(b) and 7(c). The crack 23 is filled with the hardened portion R, and the groove 22 is also filled with the hardened portion R, and the joint portion 4 similar to (2-2) joins and integrates the two limestone halves 2A and 2B. 7, in which the plurality of limestone main portions 2 and the limestone half portions 2A and 2B are all integrated by the joint portion 6, is obtained. The resin-made hardened portion R surrounds the outer peripheral portion of the reanimation board-like member 1, but it is scraped off as appropriate to obtain the desired reanimation board-like member 1 of Ryukyu limestone. Other configurations are the same as (2-2), so the description thereof is omitted.

(3) Physical property test of resuscitation board-like member The strength and the like of the resuscitation board-like member 1 obtained as described above were measured according to JIS standards. Dry weight, volume, apparent specific gravity, water absorption weight, saturated water absorption, and compressive strength were examined for each of 10 test pieces of the resuscitation board-like member 1 . Table 1 shows the results. Table 2 shows the breaking strength and bending strength test results for each of the 10 specimens in Table 1. In Tables 1 and 2, "Ryukyu Limestone (Resin)" is the Ryukyu Limestone resuscitated disk-like member 1 of the present invention.
Next, in order to compare with the product of this invention, we investigated products made of Ryukyu limestone alone. The results are shown in Tables 3 and 4. The resuscitation board-like member 1 has a strength comparable to that of products made of Ryukyu limestone alone.

(4) Effect The reanimated Ryukyu limestone board-like member configured in this way is a high-priced product that makes use of the size of the board-like body, even though the through hole 21 is the limestone main part 2 that appears in the board-like body. can be done. It does not have to be treated as a defective product for crushed stone or Sekichi stone, as in the past. When the resin-made replenishment part 3 is provided to fill the through hole 21, the hole wall 211 of the through hole 21 is varied and uneven, so that the hardened part R of the replenishment part 3 is effectively applied to the uneven hole wall 211. - 特許庁It bites into the limestone main part 2 and is firmly integrated with it, ensuring the required strength.

In particular, in the present invention, the limestone main portion 2, which is one of the main constituents, is caused by Ryukyu limestone, and the hole wall 211 of the through hole 21 is strongly intruded on the uneven surface 211a. It flows into the concave portion 211 and hardens, exhibiting an anchoring effect that prevents the hardened portion R from coming off. Furthermore, since the replenishing portion 3, which is the other main component, is made of the hardening portion R made of resin, the zipper effect of entering into the concave portion and elastically tightening is exhibited. Each structure of the limestone main part 2 and supplementary part 3 effectively acts on the integration of the two.
Compressive strength and the like can also be confirmed by "(3) physical property test of reanimated board-like member", and can be used as a building member or the like. A disc-like member having a through hole 21, which has been unusable in the past, can be revived, and the revived disc-like member 1 of a high price product can be made by making use of the size of the disc-like body. It leads to a significant increase in product yield as a board-shaped member made by cutting large lumps of Ryukyu limestone, and contributes greatly to the effective use of valuable Ryukyu limestone that has been produced over many years.

When the reanimation board-like member 1 is flattened and the surface-side flat surface 3a of the hardened portion R is formed to match the surface-side board surface 2a at the opening 210 of the through hole 21 appearing on the surface 2a side, the reanimation board is formed. Since the surface 1a side of the shaped member 1 is entirely flat, the appearance is good and it can be applied as various building members. If the back surface 2b opposite to the front surface 2a of the limestone main part 2 is also formed on a flat surface and is rectangular in plan view, versatility is increased, and applications such as table tops are further expanded.

Moreover, even if the replenishment part 3 exists, since most of it is composed of high-grade Ryukyu limestone, it maintains the same high-class feeling as a single Ryukyu limestone product. In addition, looking into the replenishing part 3, the natural beauty of the Ryukyu limestone that appears on the uneven wall 211 of the through hole 21 can be appreciated through the transparent or translucent hardened part R, and the strength is reinforced and revived as a product. It will not only make the product easier to use, but also enhance the product value.

As in claim 2, when the groove 22 is filled with the hardened portion R and the connecting portion 4 is provided to join and integrate the limestone half portions 2A and 2B, the limestone half portion 2A that has been divided into two is provided. , 2B are connected by the connecting portion 4, the half-split portions 2A and 2B can be connected to each other and can be revived as the reviving disc-like member 1. - 特許庁
In addition, when cut into a board-like body, the natural rock surface of Ryukyu limestone may appear on the side end face 25 of the board-like body with uneven portions 251. When the resin replenishment board portion 5 is integrated and extends outwardly from here with a thickness t5 that matches the board-like thickness t2 of the limestone main portion 2, a board-like body with the uneven portion 251 left is formed. It can be commercialized.
Further, as in claim 4, a plurality of limestone main parts 2 are arranged so that their flat surface side board surfaces 2a are flush with each other with a gap ε, and the hardened part R fills the gap ε. By joining and integrating with the limestone main part 2 that creates the gap ε, a larger integral product can be manufactured.

Furthermore, if the replenishment board portion 5 and the joint portion 4 are made transparent or semi-transparent, the corrugated portions 251 formed by the coral reefs on the side end surfaces 25 through the replenishment board portion 5 and the joint portion 4, as in the case of the replenishment portion 3, are formed. The natural beautiful expression of the grooved wall 221 can be seen, increasing the product value.
Furthermore, if the plate-shaped revival board-like member 1 is assembled and processed into a stand for a vase or the like as shown in FIG. It can be visually recognized through the part 5 or the like, and the stand itself is also beautiful.

In addition, if the resin molding material is a resin molding material which is mainly composed of thermosetting resin and is liquid at room temperature, molding of the replenishment part 3, the replenishment board part 5 and the like becomes easy. If the resin molding material is a resin molding material mainly composed of unsaturated polyester resin, it has excellent adhesiveness. Joining integration to the part 2 is further strengthened. Moreover, unlike phenolic resins, no by-products are produced during curing, so pressurization is not required during molding, and room temperature curing can be achieved by selecting a main catalyst, accelerator, or the like. It becomes very easy to form a large and heavy reanimation disk-shaped member like the present invention.
As described above, the Ryukyu Limestone reanimated disc-shaped member exhibits the various excellent effects described above and is extremely useful.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the invention according to the purpose and application. The shape, size, number, material, etc. of the resuscitation board-shaped member 1, limestone main part 2, through hole 21, groove 22, side end surface 25, replenishment part 3, joint part 4, replenishment board part 5, joint part 6, etc. It can be appropriately selected according to the application.

1 Revival board-like member (Ryukyu limestone reanimation board-like member)
2 limestone main part 2A, 2B limestone half part 2a surface (surface side board surface)
2b back side (back side board surface)
21 through hole 210 hole mouth (through hole mouth)
211 Pore wall 22 Groove 25 Side end surface 3 Filling part 3a Surface (surface side flat surface)
3b back surface (flat surface on the back surface)
4 Joint Part 5 Replenishment Plate Part 6 Joint Part 8 Concave R Hardening Part ε Gap

Claims (4)

It is made of Ryukyu limestone, and is formed into a board-like body that is rectangular in plan view, with a flat front side and a flat back side. Limestone main part through which the through hole penetrates,
It consists of a hardened portion of a resin molding material, and is joined and integrated with the main portion of limestone by filling the through hole, and at the opening of the through hole appearing on the surface side, the hardened portion is aligned with the flat surface side board surface. and a transparent or translucent resin replenishment part having a flat surface on the front side thereof, wherein the resin molding material is a resin molding material mainly composed of a thermosetting resin and liquid at room temperature. Reanimated plate-shaped member of Ryukyu limestone. The limestone main portion is two limestone halves divided and arranged with a groove in between, and the groove is filled with the hardened portion of the resin molding material to be integrally joined to the two limestone halves, and Further comprising a transparent or translucent resin connecting portion formed at the surface side groove mouth of the groove, in which the surface side flat surface of the hardened portion is formed so as to match the flat surface side board surface of the limestone half-split portion. A resuscitated disk-shaped member of Ryukyu limestone according to claim 1. On the side end surface of the board-shaped body related to the limestone main part, there is an uneven part that is intricately exposed in the thickness direction and the width direction,
The uneven portion is filled with the hardened portion to be joined and integrated with the side end face of the limestone main portion, and has flat surfaces on the front side and the back side that are respectively aligned with the flat surface side and the back side of the board surface, A transparent or translucent resin-made replenishment disk portion is formed extending outward from the side end face with a thickness corresponding to the board-shaped thickness of the limestone main portion, and the side peripheral end face of the replenishment disk portion is smooth. The resuscitated board-like member of Ryukyu limestone according to claim 1, which is formed. A plurality of the limestone main parts having a rectangular shape in a plan view are provided, and the flat surface side surfaces of the main parts are arranged flush with each other with a gap therebetween, and the hardened part serves as a joint part that fills the gap and fills the gap. 3. The resuscitated board-like member of Ryukyu limestone according to claim 1 or 2, which is joined and integrated with the main part of limestone forming the .

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