JP2000052331A - Mold structure for inorganic foam panel and demolding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove an inorganic foam panel without disassembling a frame. SOLUTION: In a method for demolding an inorganic foam panel 8 wherein the inorganic foam panel 8 foamed in a frame 2 to which a cover plate 3 is fitted is demolded from the frame 2, an extraction member 10 is fitted removably to the cover plate 3 beforehand and thereby the extraction member 10 is embedded inside the inorganic foam panel 8 at the time of foaming. After completion of the foaming, the inorganic foam panel 8 is extracted together with the cover plate 3 and the extraction member 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold structure and a method for removing an inorganic foam panel used as a wall of a building.

[0002]

2. Description of the Related Art When molding a panel of an inorganic foam,
The respective materials for forming the inorganic foam are mixed, and the raw material 1 in a slurry state is poured into the mold 2 as shown in FIG. 7, and the lid 3 is attached to the mold 2 as shown in FIG. After fixing with the mounting bolts 4 etc., the heating device 5 such as a heating furnace together with the form 2
The raw material 1 is foamed by heating in the above. Thereafter, as shown in FIG. 9, the mold frame 2 is disassembled into a bottom plate 5, a side frame 6, and a decorative plate 7 for attaching a decorative pattern, and an inorganic foam panel 8 as a molded product is taken out.

[0003]

However, the conventional inorganic foam panel mold structure and demolding method have the following problems.

[0004] That is, the size of the panel to be used as such as a wall of a building, for example, general standards 0.5 × 3m ^2, as large as 1 × 3m ² large standard, several its weight, differ substantially by the panel size It weighs ten kilograms, and a large one weighs about 100 kilograms. For this reason, the foaming pressure acting on the mold ² generates about 0.1 to 0.6 kg / cm ² as an error in the limit of the function of the apparatus in the molding process. Here, the error of the limit of the function of the apparatus is, for example, an error of a raw material casting amount in the casting apparatus, a measurement error of a blending amount of the foaming agent as the raw material 1, and the like.

[0005] Therefore, in order to take out the molded product from the mold 2, it is very troublesome to disassemble the mold 2 each time.
There is a problem that productivity is poor.

Therefore, it is conceivable that the molded product is pulled out of the mold frame 2 by a suction type air lifter. However, the molded product is pressed against the mold frame 2 by foaming pressure, Therefore, it is difficult to remove the air with the air lifter because the air is transmitted and the suction force of the air lifter is reduced.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a mold structure and a method for removing an inorganic foam panel from which the inorganic foam panel can be taken out without disassembling the mold. It is in.

[0008]

According to the first aspect of the present invention, there is provided a mold for casting a raw material for producing an inorganic foam panel, and a cover plate for closing the mold. In the mold structure of the inorganic foam panel provided with the above, a drawing member embedded into the inside of the inorganic foam panel by foaming is detachably attached to the lid plate.

According to the first aspect of the present invention, at the time of foaming, the extraction member is embedded in the inorganic foam panel, and after the foaming is completed, the inorganic foam panel is extracted together with the lid plate and the extraction member. Thereby, the inorganic foam panel can be taken out without disassembling the mold.

According to the second aspect of the present invention, in the method of removing an inorganic foam panel from a mold, the inorganic foam panel foamed in a mold to which a cover plate is attached is provided. By detachably attaching the pull-out member in advance, the drawing-out member is embedded in the inside of the inorganic foam panel at the time of foaming, and after foaming is completed, the inorganic foam panel is pulled out together with the lid plate and the pull-out member.

According to the second aspect of the present invention, the same function and effect as those of the first aspect can be obtained.

According to the third aspect of the present invention, a mold for casting a raw material for producing an inorganic foam panel, a decorative plate for forming a decorative pattern on the inorganic foam panel, and a closed mold are provided. In a mold structure of an inorganic foam panel provided with a cover plate, a through hole for pushing up the inorganic foam panel together with the decorative plate is formed at the bottom of the mold frame.

According to the third aspect of the present invention, after the foaming is completed, the inorganic foam panel is punched out together with the decorative plate through the through-hole, so that the inorganic foam can be formed without disassembling the mold. The body panel can be removed.

According to the fourth aspect of the present invention, the inorganic foam panel, which has a decorative plate for providing a decorative pattern on the bottom portion and is foamed in a mold frame to which a lid plate is attached, is formed. In the method of releasing the inorganic foam panel from the frame,
By forming a punching through hole in the bottom of the mold in advance, the inorganic foam panel is punched out together with the decorative plate through the through hole after the foaming is completed.

According to the fourth aspect of the present invention, the same functions and effects as those of the third aspect can be obtained.

[0016]

First Embodiment A first embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of the present invention. The same or equivalent parts as those of the conventional example will be described with the same reference numerals.

The present embodiment is directed to a method of removing the inorganic foam panel 8 from the form 2 by removing the inorganic foam panel 8 foamed in the form 2 to which the cover 3 is attached. 3, the extraction member 10 is detachably attached in advance, so that the extraction member 10 is embedded in the inside of the inorganic foam panel 8 at the time of foaming, and after the foaming is completed, the inorganic foam panel 8 is removed together with the lid plate 3 and the extraction member 10. The feature is that it is pulled out.

FIG. 1 shows a bottom plate 5 used in this embodiment.
Form 2 and cover plate 3 composed of a side frame 6 and a decorative plate 7
Is shown. When a steel material is used for the mold 2, it is preferable to perform a non-adhesive surface treatment such as Teflon coating on the inner surface in order to prevent the adhesiveness of the raw material 1 from becoming too high. The side frame 6 uses a C-type channel material or the like. Alternatively, a square pipe or a square steel material may be used. A draft angle of about 2 ° may be formed on the inner surface of the side frame 6. The decorative plate 7 is for attaching a decorative pattern to the inorganic foam panel 8, and is installed above the bottom plate 5 and inside the side frame 6. The material of the decorative plate 7 varies depending on the shape of the decorative pattern and the depth of the engraving. For example, a flexible material such as a rubber plate is used. Then, the bottom plate 5 and the side frame 6 are fastened with, for example, bolts 11 with the peripheral edge of the decorative plate 7 sandwiched between the bottom plate 5 and the side frame 6. Similarly, the cover plate 3 is fastened to the side frame 6 with bolts 12 or the like.

At this time, the pull-out member 10 is
Are detachably fastened to a plurality of positions using, for example, bolts 13 or the like. The pull-out member 1 is provided so that the load is not concentrated on the fastening portion between the pull-out member 10 and the cover plate 3 by the bolt 13 or the like, and the inorganic foam panel 8 is broken.
It is preferable that 0 can connect between fastening portions by a plurality of bolts 13 or the like. for that reason,
As shown in the figure, as the extraction member 10, a steel material of φ8 assembled in a cross-girder shape is used. Alternatively, a wire mesh or the like may be used as the extraction member 10.

Hereinafter, the above will be described in more detail.

First, a SiO ₂ -Al ₂ O ₃ -based reactive inorganic powder (A), an alkali metal silicate (B), and water (C)
And a material composed of a foaming agent (E) and the like.

Examples of the SiO ₂ -Al ₂ O ₃ -based reactive inorganic powder (A), SiO ₂ is 10 to 90 wt%, Al ₂
O ₃ is, those 90 to 10 wt% is preferably used. Examples of such powder include (A1) fly ash containing 80% by weight or more of powder having a particle size of 20 μm or less, and (A2) powder having a particle size of 20 μm or less fired at 400 to 1000 ° C. Ash, (A3) an inorganic powder obtained by melting fly ash or clay and spraying it in a gas;
(A4) an inorganic powder obtained by applying mechanical energy of 0.1 to 30 kwh / kg to clay;
(A5) An inorganic powder of (A4) such as dust and pulverized and fired bauxite at the time of producing an alumina-based abrasive is further
One or more inorganic powders selected from the group consisting of inorganic powders obtained by heating at 0 to 750 ° C and (A6) metakaolin can be used. The composition and particle size are not limited to these as long as they are appropriate.

Further, these powders may be used as they are, but in order to activate them, thermal spraying treatment, pulverization classification and mechanical energy may be applied.

As a method of activation by thermal spraying, thermal spraying technology applied to ceramic coating is applied. The spraying technique preferably has a material powder of 20
Melted at a temperature of 00-16000 ° C, 30-800m
/ Second spray rate, plasma spraying method,
High energy gas spraying, arc spraying, etc. are possible. The specific surface area of the obtained powder is 0.1 to 100 m ² /
g is preferred.

As a method of activation by classification and pulverization, any conventionally known method is employed, and examples thereof include classification by a sieve, specific gravity, wind power, wet sedimentation, and the like, and pulverization by a jet mill, a roll mill, and a ball mill. These means may be used in combination.

As a method of activating by applying mechanical energy, a ball medium mill, a medium stirring type mill, a roller mill, or the like is used. The mechanical energy to be applied is preferably 0.5 kWh / kg to 30 kWh / kg. . If the particle size is small, it is difficult to activate the powder, and if the particle size is large, the load on the device is large.

The fly ash may be fired if necessary. If the firing temperature is low, the fly ash remains black and coloring becomes difficult, and if the firing temperature is high, the reactivity with the alkali metal silicate (B) becomes low.
It is preferable that the temperature is in the range of from 1000C to 1000C.

The alkali metal silicate (B) used in the present invention is represented by M ₂ O · nSiO ₂ (M = Li, K, Na or a mixture thereof). Are preferably used, n = 0.5 to 3 are preferable, and n =
Those having a value of 0.5 to 2.5 are particularly preferred. That is, when n is less than 0.1, a dense compact cannot be obtained,
The mechanical strength of the obtained molded body is reduced.

When n exceeds 8, the aqueous solution of the alkali metal silicate (B) easily gels and the viscosity increases rapidly, so that mixing with the powder may be difficult.

The alkali metal silicate (B) is SiO _2-
It is necessary to add 0.2 to 450 parts by weight based on 100 parts by weight of the Al ₂ O ₃ -based reactive inorganic powder (A), but the preferred amount is 10 to 350 parts by weight, and the more preferred amount is Is 20 to 250 parts by weight.

If the amount is less than 0.2 parts by weight, the amount of alkali required for the reaction is too small, resulting in poor curing. Conversely, if it exceeds 450 parts by weight, the curing agent (D ) Becomes large, which causes a problem in the water resistance of the inorganic foam.

The water (C) used in the present invention may be added as an aqueous solution of the alkali metal silicate (B) or may be added independently. If the amount of water (C) is too small, it will not be cured sufficiently and mixing will be difficult, and if it is too large, the strength of the cured product will tend to decrease. ~ 1500
Parts by weight, preferably 45 to 1000 parts by weight,
More preferably, it is 50 to 500 parts by weight. If the amount is less than 10 parts by weight, it becomes impossible to mix with the reactive inorganic powder (A). Conversely, if it exceeds 1000 parts by weight, the mechanical strength of the obtained inorganic foam decreases.

In the present invention, if necessary, a curing agent (D), a foaming agent (E), an inorganic filler (F), a reinforcing fiber (G), a foaming aid (H), an organic foam or an inorganic foam. A foam (I) such as a foam may be further added.

Examples of the curing agent (D) include magnesium chloride and zinc oxide.

Magnesium chloride as the curing agent (D) is represented by MgCl ₂ , and anhydrous, hexahydrate and dodecahydrate are used.

The amount of magnesium chloride added must be 1 to 100 parts by weight based on 100 parts by weight of the reactive inorganic powder (A).

When zinc oxide is used as the curing agent (D), the addition amount must be 1 to 100 parts by weight based on 100 parts by weight of the reactive inorganic powder (A).

If the amount is less than 1 part by weight, the durability of the inorganic foam is poor, and if it exceeds 100 parts by weight, the mechanical strength of the inorganic foam is reduced.

Examples of the foaming agent (E) include peroxides such as hydrogen peroxide, sodium peroxide, potassium peroxide and sodium perborate, or Mg, Ca, Cr, Mn, Fe, C
o, Ni, Cu, Zn, Al, Ga, Sn, Si, metal powders such as ferrosilicon, and the like, cost, safety,
Among these, hydrogen peroxide and aluminum powder are preferable in consideration of the availability and ease of mixing, and Si and ferrosilicon are preferable in view of easy control of the foaming reaction.

The foaming agent (E) is used in an amount of 0.01 to 100 parts by weight of the reactive inorganic powder (A) based on SiO ₂ —Al ₂ O _3.
In the range of 10 to 10 parts by weight, the amount to be added is determined by the density of the target molded body. That is, if the addition amount exceeds 10 parts by weight, the foaming gas becomes excessive and foam breaks, and if it is less than 0.01 parts by weight, the expansion ratio is too small to lose the meaning as a molded article.

When hydrogen peroxide is used as the blowing agent (E), it is preferable to use it as an aqueous solution. The concentration of the aqueous hydrogen peroxide solution that can be used as the foaming agent (E) is as follows:
It is 0.5 to 35%, preferably 1 to 25%, and more preferably 5 to 15%. If the concentration exceeds 35%, the foaming becomes too fast, foaming cannot be performed stably, and it is dangerous.
On the other hand, if the concentration is less than 0.5%, the amount of water becomes so large as to the amount of hydrogen peroxide, the viscosity may be reduced, and foaming may not be stabilized.

When a metal powder is used as the foaming agent (E), it is preferable that its particle diameter is 1 to 200 μm.

That is, when the average particle size exceeds 200 μm, the reactivity is reduced. When the average particle size is less than 1 μm, the dispersibility is reduced, and the reactivity is increased, and the foaming may be too fast.

The inorganic filler (F) can reduce shrinkage during curing, improve the fluidity of the slurry, densify the cells, stabilize the bubbles, etc., for example, silica sand, silica stone powder, slag, mica, Examples include porous powders such as talc, wollastonite, calcium carbonate, zeolite, activated carbon, and alumina gel.

The inorganic filler (F) preferably has an average particle size of 0.01 μm or more and 1 mm or less.
That is, if the average particle size exceeds 1 mm, the foaming becomes unstable, and if the average particle size is less than 0.01 μm, the viscosity increases due to an increase in the amount of adsorbed water, and the workability decreases.

The amount of the inorganic filler (F) added is SiO ₂
To -al ₂ O ₃ based reactive inorganic powder (A) 100 parts by weight of, preferably 700 parts by weight or less, more preferably 10 to 500 parts by weight. That is, when the addition amount is 700
If the amount exceeds the weight part, the strength may be reduced.

The reinforcing fiber (G) can improve the strength and prevent cracks. For example, organic fibers such as vinylon, polypropylene, aramid, acrylic and rayon, carbon, glass, potassium titanate, alumina, steel, Organic fibers such as slag wool are exemplified.

The preferable fiber length of the reinforcing fiber (G) to be added is 1 to 15 mm, and the preferable fiber diameter is 1 to 500 μm.
m.

If the fiber length exceeds 15 mm, the dispersibility decreases. If the fiber diameter is less than 1 μm, re-agglomeration occurs during mixing, and fiber balls may be formed and strength may not be improved. Less than or the fiber diameter is 500
If it exceeds μm, the reinforcing effect is small.

The amount of the reinforcing fiber (G) added is SiO ₂ -A
It is preferably 10 parts by weight or less based on 100 parts by weight of the l ₂ O ₃ -based reactive inorganic powder (A). That is, if it exceeds 10 parts by weight, the dispersibility of the fiber may be reduced.

A foam (I) such as an organic foam or an inorganic foam can reduce the weight of the molded article. Examples of the organic foam (I) include vinyl chloride, phenol, urea, and the like.
Granular foams of synthetic resins such as styrene, urethane, ethylene and the like are mentioned. As the inorganic foams (I), glass balloons, shirasu balloons, fly ash balloons,
Examples thereof include silica balloons, perlite, hillite, and particulate expanded silica, and these can be used alone or in combination.

If the specific gravity of the foam (I) is less than 0.01, the mechanical strength of the molded article is reduced, and if it exceeds 1, the effect of reducing the weight may not be obtained. Those having a specific gravity of 0.01 to 1 are preferable, and those having a specific gravity of 0.03 to 0.7 are more preferable.

The amount of the foam (I) added is SiO _2-
The amount is preferably 10 to 100 parts by weight, more preferably 30 to 80 parts by weight, based on 100 parts by weight of the Al ₂ O ₃ -based reactive inorganic powder (A). That is, if the amount is less than 10 parts by weight, the effect of weight reduction cannot be obtained, and if it exceeds 100 parts by weight, the mechanical strength may be reduced.

Next, the above-mentioned materials are mixed and kneaded with a mixer to obtain a slurry-like raw material 1 for producing an aerated foam.
And

The obtained raw material 1 is cooled and adjusted as necessary so that the temperature is 40 ° C. or lower. this is,
If the temperature is higher than this, foaming occurs quickly.

When the temperature of the raw material 1 is set to 20 ° C. or less,
This is preferable because the foaming start time can be delayed. This is advantageous because it is possible to make a large amount of non-foamed material and store it until casting is completed.

The raw material 1 is cast into a mold 2 having a decorative plate 7, and the mold 2 is covered with a cover plate 3.

Then, the raw material 1 is used as a mold 2 having a decorative plate 7.
After the casting, the raw material 1 in the mold 2 is heated and foamed. The heating and foaming means may be any method such as heating using a furnace, heating using a jacket, heating using electromagnetic waves, and induction heating. For example, if a furnace is used, 85
By heating at about 40 ° C. for about 40 minutes, foaming occurs, and the mold 2 is filled with the raw material 1. At this time, the extraction member 10 is embedded in the inorganic foam panel 8.

Finally, the obtained foam is released from the mold to obtain an inorganic foam panel 8. Therefore, the cover plate 3 and the side frame 6
3 is removed, and as shown in FIG. 3, the mold 2 is fixed with a fixing jig 14 and the cover plate 3 is pulled up. Then, since the extraction member 10 is embedded inside the inorganic foam panel 8, the inorganic foam panel 8 is extracted together with the lid plate 3 and the extraction member 10.

At this time, since the decorating plate 7 is made of a flexible material such as rubber, the decorating plate 7 is deformed so that the inorganic foam panel 8 is separated from the other without being damaged. Further, since the adhesive force between the decorative plate 7 and the raw material 1 is smaller than the adhesive force between the metal and the raw material 1, the force required for separation is extremely small and poses almost no problem.

For example, in the case of a large panel, it is sufficient to apply a total of about 600 kg of the weight of the cover plate 3 and the pulling force. The inorganic foam panel 8 can be removed from the mold by such a force.

Finally, the bolts 13 of the cover plate 3 are removed to separate the cover plate 3 from the drawing member 10 and the inorganic foam panel 8. The extraction member 10 is then used as a reinforcing member for the inorganic foam panel 8.

As described above, according to the present embodiment, the inorganic foam panel 8 can be taken out without disassembling the mold 2.

[0065]

Second Embodiment FIGS. 4 to 6 show a second embodiment of the present invention. Note that the same or equivalent parts as those in the first embodiment are described with the same reference numerals.

In the present embodiment, the inorganic foam panel 8 having a decorative plate 7 for attaching a decorative pattern on the bottom thereof and foamed in the mold frame 2 to which the cover plate 3 is attached is formed. In the method for removing the inorganic foam panel 8 from the frame 2, the punching through holes 2 are previously formed in the bottom of the mold 2, that is, the bottom plate 5.
0, the through-hole 20 is formed after the completion of foaming.
It is characterized in that the inorganic foam panel 8 is pushed out together with the decorative plate 7 through the intermediary of the panel.

Then, a punching device 21 such as a cylinder is provided at a position corresponding to the through hole 20 of the fixing jig 14 of the mold 2.

FIG. 4 shows a bottom plate 5 used in this embodiment.
Form 2 and cover plate 3 composed of a side frame 6 and a decorative plate 7
Is shown. When a steel material is used for the mold 2, it is preferable to perform a non-adhesive surface treatment such as Teflon coating on the inner surface in order to prevent the adhesiveness of the raw material 1 from becoming too high. A draft angle of about 2 ° may be formed on the inner surface of the side frame 6. As described above, the bottom plate 5 is formed with a plurality (eight in FIG. 5) of punching through holes 20 through which the rod of the punching device 21 such as a cylinder passes. The bottom plate 5 and the side frame 6 are fastened with bolts 11 or the like, or are made as one body. The decorative plate 7 is for attaching a decorative pattern to the inorganic foam panel 8, and is detachably disposed above the bottom plate 5 and inside the side frame 6. The material of the decorative plate 7 varies depending on the shape of the decorative pattern and the depth of the engraving. For example, a flexible material such as a rubber plate is used. The cover plate 3 is fastened to the side frame 6 with bolts 12 or the like.

Then, the same raw material 1 as in Embodiment 1 was used.
The mold 2 is cast into the mold 2 having the decorative plate 7, and the cover 2 is placed on the mold 2. At this time, since the viscosity of the raw material 1 is high, the raw material 1 does not flow between the decorative plate 7 and the bottom plate 5 or leak from the through-hole 20 formed in the bottom plate 5.

Next, after casting the raw material 1 into the mold 2 having the decorative plate 7, the raw material 1 in the mold 2 is heated and foamed.
The heating and foaming means may be any method such as heating using a furnace, heating using a jacket, heating using electromagnetic waves, and induction heating. For example, when a furnace is used, foaming occurs by heating at 85 ° C. for about 40 minutes, and the mold 1 is filled with the raw material 1.

Finally, the obtained foam is demolded to obtain an inorganic foam panel 8. For this purpose, as shown in FIG. 4, the bolts 12 for fastening between the cover plate 3 and the side frame 6 are removed, and the cover plate 3 is removed. Then, as shown in FIG.
The mold 2 is fixed to the fixing jig 1 in a state where the through hole 20 is aligned with the rod of the punching device 21 such as a cylinder.
4 and the cylinder of the punching device 21 is extended. Then, the rod of the cylinder rises and the decorative plate 7
At the same time, the inorganic foam panel 8 is pushed out. On this occasion,
By forming a plurality (eight in FIG. 5) of punching through-holes 20 evenly in the bottom plate 5, the applied load is dispersed, so that the inorganic foam panel 8 is prevented from being damaged. You. In addition, the inorganic foam panel 8 includes a decorative plate 7.
, So that scratching is prevented.

For example, in the case of a large panel, it is sufficient to apply a total of about 600 kg as the pushing force.
The inorganic foam panel 8 can be removed from the mold by such a force.

Finally, the decorative plate 7 and the inorganic foam panel 8
And separate. Since the decorative plate 7 is made of a flexible material such as rubber, when the decorative plate 7 is deformed, the two are separated without damaging the inorganic foam panel 8.

As described above, according to the present embodiment, the inorganic foam panel 8 can be taken out without disassembling the mold 2.

Except for the above, the configuration is the same as that of the above embodiment, and the same operation and effect can be obtained.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the design may be changed without departing from the scope of the present invention. Included in this invention.

For example, the punching device 21 can use not only a cylinder but also a jack or the like.

[0078]

As described above, according to the first aspect of the present invention, at the time of foaming, the extraction member is embedded in the inside of the inorganic foam panel, and after completion of the foaming, the inorganic foam panel is removed together with the lid plate and the extraction member. By extracting, the inorganic foam panel can be taken out without disassembling the mold.

According to the second aspect of the invention, the same function and effect as the first aspect can be obtained.

According to the third aspect of the present invention, the inorganic foam panel can be taken out without disassembling the formwork by pushing out the inorganic foam panel together with the decorative plate through the through hole after the completion of the foaming. .

According to the fourth aspect of the invention, the same advantageous effects as those of the third aspect can be obtained.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of a mold according to a first embodiment of the present invention.

FIG. 2 is a bottom view of the lid plate of FIG. 1;

FIG. 3 is a side sectional view showing a state in which the mold is removed from the first embodiment;

FIG. 4 is a side sectional view of a mold according to a second embodiment of the present invention.

FIG. 5 is a plan view of the mold of FIG. 4;

FIG. 6 is a side sectional view showing a state in which a mold is removed according to the second embodiment.

FIG. 7 is a side sectional view showing a state of casting a raw material according to a conventional example.

FIG. 8 is a side sectional view showing a state of heat foaming according to a conventional example.

FIG. 9 is an exploded perspective view of a mold according to a conventional example.

[Description of Signs] 1 Raw material 2 Form frame 3 Cover plate 5 Bottom plate 7 Decorative plate 8 Inorganic foam panel 10 Pullout member 20 Through hole

Claims (4)

[Claims] In a mold structure of an inorganic foam panel having a mold for casting a raw material for producing an inorganic foam panel and a lid plate for closing the mold, foam is formed into the inside of the inorganic foam panel by foaming. A mold structure for an inorganic foam panel, wherein a drawing member to be embedded is detachably attached to a lid plate. 2. A method of removing an inorganic foam panel from a mold to which an inorganic foam panel foamed in a mold to which a lid plate is attached is detachably attached to a lid plate in advance by a detachable member. A method for removing an inorganic foam panel, characterized in that the extraction member is embedded in the inside of the inorganic foam panel at the time of foaming, and the inorganic foam panel is pulled out together with the lid plate and the extraction member after completion of the foaming. 3. An inorganic material comprising: a mold for casting a raw material for producing an inorganic foam panel; a decorative plate for attaching a decorative pattern to the inorganic foam panel; and a lid plate for closing the mold. A mold structure for an inorganic foam panel, wherein a through hole for pushing up the inorganic foam panel together with a decorative plate is formed at the bottom of the mold frame. 4. An inorganic foam having a decorative plate for attaching a decorative pattern to a bottom portion, and removing the inorganic foam panel foamed in the form from which the cover plate is attached, from the form. In the panel demolding method, by forming a through hole for punching in advance at the bottom of the mold, the inorganic foam panel is punched out together with the decorative plate through the through hole after foaming is completed. Removal method of the inorganic foam panel.