JP2002302898A - Method for producing cured product and apparatus for producing cured product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a cured product and an apparatus for producing the cured product by which the cured product can efficiently be mass-produced from a papermaking sludge. SOLUTION: The cured product of the papermaking sludge is obtained by carrying out a papermaking of a raw material solution with using a filter body 22A, transferring the papermaking product after transcribing to a conveying belt 23, laminating the papermaking product while transcribing to a making roll 30, cutting the multilayered papermaking product into a prescribed size and curing the papermaking product. The papermaking product transcribed to the making roll 30 can clearly be released because the papermaking product at the making roll 30 is released by pressing a cutter 31 thereto from the outside and cutting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a cured product capable of mass-producing a cured product obtained by solidifying papermaking sludge into a plate shape.

[0002]

2. Description of the Related Art Effective utilization of various industrial wastes has been studied in recent years from the viewpoint of protecting the global environment. For example, in the construction industry, which has consumed a large amount of forest resources until now, new construction materials are required for industrial waste,
It has been proposed to reduce the consumption of forest resources. On the other hand, it has been demanded to realize low cost and high functionality of conventionally used inorganic boards such as calcium silicate board, perlite board, slag gypsum board, wood chip cement board and gypsum board.

The present inventors have previously described a technique for producing a cured product that can be effectively used as an architectural panel or the like after papermaking sludge generated after the production of paper is made and then cured by drying. / 36242, WO00 / 362
18, WO00 / 35820, JP-A-2000-30
No. 2415, JP-A-2000-302416, JP-A-20
00-303395, JP-A-2000-303392
JP-A-2000-302414, JP-A-2000-2
No. 82399, JP-A-2000-303394, JP-A-2
000-303396, JP-A-2000-303393
JP-A-2000-296576, JP-A-2000-2
97495, JP-A-2000-301651, JP-A-2
000-297496. Further, Japanese Patent Application No. WO00 / 79052 proposes a technique for efficiently forming paper from papermaking sludge and producing a cured product from the obtained paper.

[0004] In the technique of WO 00/79052, a raw material solution containing papermaking sludge is formed into paper using a filter body, and a papermaking sludge paperboard is attached to the surface of the filter body, and the paperboard is transferred to a transport belt. After the transfer, the paper body on the conveyor belt is multilayered while being transferred to a hard roller, the multilayered paper body is peeled off and cut into a predetermined size, and the paper body is hardened to cure the papermaking sludge. Have gained.

[0005]

SUMMARY OF THE INVENTION However, WO
In the technique of 00/79052, the wire arranged in the hard roller is projected when the multilayered paper body is peeled off from the hard roller. In some cases, the papermaking product could not be peeled off, and the cured product could not be efficiently mass-produced from papermaking sludge. In addition, the cut side was distorted, and distortion was caused by drying.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method of manufacturing a cured body capable of efficiently mass-producing a cured body from a papermaking sludge without distortion. To provide a manufacturing apparatus.

[0007]

Means for Solving the Problems To solve the above-mentioned problems, a first aspect of the present invention is to form a raw material solution containing papermaking sludge by using a filter body, and attach the papermaking sludge to the surface of the filter body. At the same time, the paper is transferred to a conveyor belt and then transferred.The paper on the conveyor belt is transferred to a hard roller to be multilayered, the multilayered paper is peeled off, and the paper is cured to form paper sludge. In the method for producing a cured product for obtaining the cured product of the above, a technical feature is that the papermaking product on the hard roller is peeled off by being cut from the outside.

The cured product of the present invention is used to form papermaking sludge.
And cured, the respective acids of Si, Al and Ca
Fiber composed of polysaccharide in inorganic amorphous body composed of fluoride
A cured product containing fibers and calcium carbonate
Thus, the amounts of Ca, Al, and Si in the cured product are respectively
CaO, Al_TwoO_Three, SiO_TwoCaO / Si
O_TwoRatio of 0.2 to 7.9, CaO / Al_TwoO_ThreeRatio
Is a cured product adjusted to 0.2 to 12.5. this
The brightness of the cured product is a value based on JIS Z 8721
And N5 or more. In addition, these Ca, Al, Si
Amount (CaO, Al _TwoO_Three, SiO_Two Conversion amount)
Is the total amount of Ca, Al, Si in the
If any, calcium carbonate and all
Means the amount of Ca. In addition, CaO / SiO_TwoIs the ratio
0.2 to 7.9 or less, CaO / Al_TwoO_ThreeIs the ratio
Be a cured product adjusted to more than 0.2 and less than 12.5
Is optimal. .

In the present invention, the cured product is manufactured by making a paper using a mesh-shaped rotating drum, and impurities are dropped from the mesh, so that the impurities can be reduced and the brightness can be increased. is there. Further, a cured product containing calcium carbonate, wherein Ca, Al, S in the cured product
When the amount of i is converted into CaO, Al ₂ O ₃ , and SiO ₂ , respectively, the ratio of CaO / SiO ₂ is 0.2 to 7.9,
Since the ratio of / Al ₂ O ₃ is adjusted from 0.2 to 12.5, the Ca component increases and the brightness improves. Also,
This is because strength and nailing performance are also high.

[0010] For this reason, the brightness of the cured product is JIS
It can be N5 or more with a value based on the definition of Z 8721.
Note that JIS Z 8721 sets the ideal black lightness to 0.
The ideal white lightness is assumed to be 10, and each color is divided into 10 so that the perception of the brightness is equal between the black lightness and the white lightness, and is indicated by symbols N0 to N10. It was done. The actual lightness measurement is compared with the color charts corresponding to N0 to N10. In this case, the first place of the decimal point is 0 or 5. The brightness of the cured product is JIS Z 8
Since the value based on the rule 721 can be N5 or more, coloring and decoration can be performed.

The calcium carbonate crystal habit is desirably at least one type selected from the group consisting of a spindle, a square, a table, a cube and a column. This is because the whiteness is high, and since it has corners, it hardly gets caught in the fiber and falls off, so that it can be incorporated into the cured product even in papermaking.

[0012] Further, the present invention further provides a papermaking method using a filter body for a raw material solution containing papermaking sludge, attaching a papermaking sludge paperwork to the surface of the filter body, and transferring the papermaking body to a conveyor belt. Transfer, the paper body on the conveyor belt, while transferring to a hard roller, multilayered, peeling the multilayered paper body, in a cured body manufacturing apparatus to obtain a cured body of papermaking sludge by curing the paper body, It is a technical feature that the paper body on the hard roller is peeled off by being cut by pressing a blade from the outside.

[0013] A method for producing a cured product according to claim 1 and claim 2.
In the hardened body manufacturing equipment, to remove the paper body on the hard roller by pressing and cutting the blade from the outside,
The multilayered paper body can be peeled off neatly while being transferred to the hard roller, and it becomes possible to mass-produce the cured body efficiently from papermaking sludge.

According to a third aspect of the present invention, an elastic member is provided on the outer periphery of the hard roller in parallel with the axis.
Since the blade is brought into contact with the elastic member to cut the paper body on the hard roller, the blade does not damage the surface of the hard roller.

In the apparatus for manufacturing a cured product according to the fourth aspect, since the blade is made of a wire, the surface of the hard roller is not damaged by the blade.

According to a fifth aspect of the present invention, the hardened body manufacturing apparatus cuts the paper-made body on the hard roller when the number of rotations of the hard roller reaches a predetermined number. For this reason, it is possible to efficiently produce a paper having a uniform thickness.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the structure of a composite cured product produced by the method for producing a composite cured product of the present invention, which will be described later, will be described with reference to the schematic diagram of FIG. The composite cured body 1 is composed of an inorganic amorphous body 2 composed of two or more oxides.
And that the organic fibrous material 3 is mixed in the inorganic amorphous body 2. Here, the inorganic amorphous body composed of two or more oxides refers to an oxide (1) -oxide (2)... -Oxide (n) (where n is a natural number, Oxide (1), oxide (2), ... oxide (n)
Are different oxides).

It is difficult to accurately define such an amorphous substance. However, an amorphous compound is an amorphous compound formed by a solid solution or hydration reaction of two or more oxides. Conceivable. Such inorganic amorphous compounds are analyzed by fluorescent X-ray analysis to determine the elements (Al, Si,
Ca, Na, Mg, P, S, K, Ti, Mn, Fe, Z
and at least two types selected from n), and a halo is observed in the range of 2θ: 10 ° to 40 ° in the analysis chart by X-ray diffraction. This halo is a gentle undulation of the intensity of the X-ray, and is observed as a broad swell on the X-ray chart. The halo has a half width of 2θ:
2 ° or more.

First, the above-mentioned composite cured product 1 is made of an inorganic amorphous material 2
Becomes a strength developing material, and the organic fibrous material 3 is dispersed in the inorganic amorphous material 2 to improve the fracture toughness value, so that the bending strength value and impact resistance can be improved. Also,
A homogeneous cured product having no anisotropy in strength can be obtained. Furthermore, since it is an amorphous body, there is an advantage that sufficient strength can be obtained at a low density.

The reason why the above-mentioned amorphous material becomes a strength-expressing substance is not clear, but it is presumed that it is because the progress of cracks is inhibited as compared with the crystalline structure. Further, since the fibrous material is more easily dispersed uniformly in the amorphous state than in the crystalline state, it is considered that the fracture toughness value is also improved. As a result, even if a nail is driven or a through hole is provided,
Since cracks do not occur, it is optimal for materials that require processing, such as building materials.

Here, as the oxide, a metal and / or nonmetal oxide can be used, and Al ₂ O ₃ , Si
O ₂ , CaO, Na ₂ O, MgO, P ₂ O ₅ , SO ₃ ,
It is desirable to be selected from K ₂ O, TiO ₂ , MnO, Fe ₂ O ₃ and ZnO. In particular, Al ₂ O ₃ —S
iO ₂ -CaO-based or Al ₂ O ₃ -SiO ₂ -CaO
-An amorphous body composed of an oxide or a composite of these amorphous bodies is optimal. The oxide in the latter amorphous body is at least one kind of metal and / or non-metal oxide except Al ₂ O ₃ , SiO ₂ and CaO.

First, the amorphous body composed of Al ₂ O ₃ —SiO ₂ —CaO system is composed of Al ₂ O ₃ , SiO ₂ and CaO.
Is a compound having an amorphous structure in which all or a part of each component is formed by solid solution or hydration reaction with each other. That is, Al ₂ O ₃ and SiO ₂ , SiO ₂ and Ca
O, Al ₂ O ₃ and CaO, and Al ₂ O ₃ , SiO ₂
It is considered to include any of the compounds formed by causing a solid solution or a hydration reaction or the like with a combination of CaO and CaO.

Such an inorganic amorphous compound has a fluorescent X
Al, Si, and Ca were confirmed by the line analysis, and the halo was observed in the range of 2θ: 10 ° to 40 ° in the analysis chart by X-ray diffraction.

Further, Al ₂ O ₃ , SiO ₂ and CaO
Other than at least one oxide, ie, Al
_The amorphous body composed of ₂ O ₃ —SiO ₂ —CaO—oxide system includes, in addition to the combination of the above Al ₂ O ₃ —SiO ₂ —CaO system, Al ₂ O ₃ and oxide, and SiO ₂ and oxide ,
CaO and oxide, Al ₂ O ₃ and SiO ₂ and oxide, Si
O ₂ and CaO and oxide, Al ₂ O ₃ and CaO and oxide,
Then, it is considered that it contains any of the compounds formed by causing a solid solution or hydration reaction with a combination of Al ₂ O ₃ , SiO ₂ , CaO and oxide.

It is to be noted that the oxide is two or more, ie, Al
_{If it is a 2} O ₃ —SiO ₂ —CaO—oxide (n) -based (n is a natural number of 2 or more) amorphous material, these oxides, for example, oxide (1), oxide (2). ..Oxide (n)
(N is a natural number of 2 or more, and the oxide (n) means a different oxide if the value of n is different, and
₂ O ₃ , SiO ₂ , and CaO), and a compound formed by performing a solid solution or hydration reaction with at least two combinations selected from the group consisting of Al ₂ and Al _2.
Compounds formed by performing a solid solution or hydration reaction with at least two kinds of combinations selected from O ₃ , SiO ₂ , and CaO, and oxides (1), oxides (2),.
At least one selected from oxides (n) (n is a natural number of 2 or more) and Al ₂ O ₃ , SiO ₂ , Ca
It is considered to include any of the compounds formed by solid solution or hydration reaction in combination with at least one selected from O.

Such an inorganic amorphous compound has a fluorescent X
According to the line analysis, in addition to Al, Si and Ca, the elements (Na, Mg, P, S, K, Ti, Mn, F
e, Zn at least two types), and in the analysis chart by X-ray diffraction, 2θ: 10 ° to
The halo is seen in the range of 40 °.

Here, Al ₂ O ₃ , SiO ₂ and Ca
Oxides to be combined with O are one kind or two or more kinds, and are metals other than Al ₂ O ₃ , SiO ₂ and CaO and / or
Alternatively, non-metal oxides can be used, such as Na ₂ O, M
gO, P ₂ O ₅ , SO ₃ , K ₂ O, TiO ₂ , MnO,
It can be selected from Fe ₂ O ₃ and ZnO. This selection can be made based on the characteristics expected of the composite cured product.

For example, since Na ₂ O or K ₂ O can be removed with an alkali or the like, if the removal treatment is performed prior to the plating treatment, the surface to be plated of the surface of the composite hardened body becomes rough and acts as an anchor for plating. be able to. Mg
O forms a solid solution with Al ₂ O ₃ , SiO ₂ , and CaO to contribute to strength development, and greatly improves bending strength and impact resistance. P
₂ O ₅ is particularly advantageous when used for biomaterials (artificial roots, artificial bones) to aid adhesion with bone. SO ₃
Has a bactericidal action and is suitable for antibacterial building materials. TiO
₂ is a white colorant and also acts as a photo-oxidation catalyst, so it can forcibly oxidize attached organic pollutants and can be cleaned only by irradiating light. Has a unique effect that it can be used as a reaction catalyst. MnO is useful as a dark colorant, Fe ₂ O ₃ is useful as a light colorant, and ZnO is useful as a white colorant. These oxides may be present alone in the amorphous body.

The composition of the above-mentioned amorphous material was Al ₂
Al ₂ O ₃ in terms of O ₃ , SiO ₂ and CaO:
3 to 51% by weight based on the total weight of the composite cured body, Si
O ₂ : 6 to 53% by weight based on the total weight of the composite cured product and CaO: 6 to 63% by weight based on the total weight of the composite cured product
And the total content thereof does not exceed 100% by weight.

The reason is that the content of Al ₂ O ₃ is 3% by weight.
If the content is less than 50% or more than 51% by weight, the strength of the composite cured product will be reduced, and if the content of SiO ₂ is less than 6% by weight or more than 53% by weight, the strength of the composite cured product will be reduced. Further, the content of CaO is less than 6% by weight or 63% by weight.
Even when the amount exceeds the weight percentage, the strength of the composite cured product is reduced.

When the Ca content is 3% by weight or more and less than 6% by weight in terms of CaO, the strength is low but the fracture toughness is excellent. The amounts of the Si, Al, and Ca components refer to the total amount in the composite cured product, regardless of whether it is in a crystal or non-crystal. When an inorganic additive is present, the total amount of the components in the additive is also included.

Further, in terms of oxide, CaO / SiO
Adjusting the ratio of ₂ to 0.2 to 7.9 and the ratio of CaO / Al ₂ O ₃ to 0.2 to 12.5 is advantageous for obtaining a cured product having high strength.

Further, Al ₂ O ₃ , SiO ₂ and CaO
Oxides other than Na ₂ O, MgO, P ₂ O ₅ , S
O ₃ , K ₂ O, TiO ₂ , MnO, Fe ₂ O ₃ and Z
When one or more kinds of nO are contained, the preferred contents of each component are as follows. It goes without saying that the total amount of these oxides does not exceed 100% by weight. Na ₂ O: 0.1 to 1.2% by weight based on the total weight of the composite cured body MgO: 0.3 to 11.0% by weight based on the total weight of the composite cured body P ₂ O ₅ : Composite cured body 0.1 to 3.5% by weight based on the total weight of the composite cured product SO ₃ : 0.1 to 3.5% by weight based on the total weight of the composite cured product K ₂ O: 0 based on the total weight of the composite cured product .1～1.2 wt% TiO _2: from 0.1 to 8.7 wt% MnO, relative to the total weight of the composite hardened product: 0.1 to 1.5 wt% Fe with respect to the total weight of the composite cured body ₂ O ₃ : 0.2 to 17.8% by weight based on the total weight of the composite cured body ZnO: 0.1 to 1.8% by weight based on the total weight of the composite cured body The reason for limiting the range is that if the ratio deviates from the above range, the strength of the composite cured body decreases.

Incidentally, it can be confirmed by X-ray diffraction whether or not it has an amorphous structure. That is, 2θ: 10 ° by X-ray diffraction
If a halo is observed in the region of ４０40 °, it can be confirmed that it has an amorphous structure. In the present invention, in addition to those having a completely amorphous structure, Hydrogen Aluminum Silicate, Kaolinite, Zeolit
e, Gehlenite, syn, Anorthite, Melitite, Gehlenit
e-synthetic, tobermorite, xonotlite, ettringite
Or SiO ₂ , Al ₂ O ₃ , CaO, Na ₂ O, Mg
O, P ₂ O ₅ , SO ₃ , K ₂ O, TiO ₂ , MnO, F
oxides such as e ₂ O ₃ and ZnO, and CaCO ₃
Crystals such as (Calcite) may be mixed.

Although it is not considered that these crystals themselves become a strength-expressing substance, if they have effects such as increasing the hardness and density to improve the compressive strength and suppressing the progress of cracks. Conceivable. The content of the crystal is desirably 0.1 to 50% by weight based on the total weight of the composite cured product. This is because if the crystal content is less than 0.1% by weight, effects such as increasing the hardness and density to improve the compressive strength and suppressing the progress of cracks cannot be sufficiently obtained. This is because bending strength is reduced.

Incidentally, the above Al ₂ O ₃ —SiO ₂ type crystalline compound is manufactured by Hydrogen Aluminum Silicate, Kaolini.
te, Zeolite, Al ₂ O ₃ —CaO based crystalline compounds are Calcium Aluminate, CaO—SiO ₂ based crystalline compounds are Calcium Silicate, Al ₂ O ₃ —SiO ₂ —Ca
O-type crystalline compounds are Gehlenite, syn and Anorthite, and Al ₂ O ₃ —SiO ₂ —CaO—MgO-type crystalline compounds are Melitite and Gehlenite-synthetic.
Further, it is desirable that the above-mentioned crystal contains Ca, and Gehlenite, syn (Ca ₂ Al ₂ O ₇ ), Melitite-s
_{ynthetic (Ca 2 (Mg 0.5 Al} 0.5) (Si 1. 5 Al
_0.5 O ₇ )), Gehlenite-synthetic (Ca ₂ (Mg
_0.25 Al _0.75 ) (Si _1.25 Al _0.75 O ₇ )), Anorthit
e, ordered (Ca ₂ Al ₂ Si ₂ O ₈ ) and calcium carbonate (Calcite) may be contained.

In the composite cured product produced by the production method of the present invention, halogen may be added to an amorphous material composed of at least two or more oxides. The halogen serves as a catalyst for a solid solution or hydrate formation reaction and also acts as a combustion suppressing substance. Its content is 0.1-1.
2% by weight is desirable. This is because if it is less than 0.1% by weight, the strength is low, and if it exceeds 1.2% by weight, harmful substances are generated by combustion. As the halogen, chlorine, bromine and fluorine are desirable.

Similarly, calcium carbonate (Calcite) may be added. Calcium carbonate itself is not a strength-expressing substance, but it is thought that by surrounding the calcium carbonate with an amorphous body, it contributes to strength improvement by actions such as inhibiting the progress of cracks. The content of the calcium carbonate is 48 to the total weight of the composite cured product.
% By weight or less is desirable. The reason for this is that if it exceeds 48% by weight, the bending strength is reduced. Further, the content is desirably 0.1% by weight or more. If the content is less than 0.1% by weight, it does not contribute to the improvement in strength.

Further, the addition of a binder is advantageous for further improving the strength and for improving the water resistance, chemical resistance and fire resistance. The binder desirably comprises one or both of a thermosetting resin and an inorganic binder. As thermosetting resins, phenolic resins,
At least one resin selected from melamine resin, epoxy resin and urea resin is desirable. The inorganic binder is preferably at least one selected from the group consisting of sodium silicate, silica gel and alumina sol.

Next, in the method for producing a composite cured product of the present invention, the organic fibrous material mixed with the inorganic amorphous material is an organic fibrous material composed of a polysaccharide. This is because polysaccharides have an OH group, and Al ₂ O ₃ ,
This is because they are easily bonded to various compounds of SiO ₂ or CaO.

The polysaccharide is desirably at least one compound selected from amino sugars, uronic acids, starch, glycogen, inulin, lichenin, cellulose, chitin, chitosan, hemicellulose and pectin. As the organic fibrous material comprising these polysaccharides, in general, pulp, pulp grounds, and crushed waste paper such as newspapers and magazines are advantageously suited.

The content of the fibrous material is 2 to 75.
% By weight. The reason for this is that if the content is less than 2% by weight, the strength of the composite cured product is reduced, while if it exceeds 75% by weight, the fire protection performance, water resistance, dimensional stability and the like may be reduced. Further, the average length of the fibrous material is desirably 10 to 1000 μm. If the average length is too short, no entanglement occurs, and if the average length is too long, voids are formed and the strength of the composite cured product is likely to decrease.

The above composite cured product 1 is optimally obtained by drying and coagulating and curing paper sludge (scum). That is, the papermaking sludge is a pulp residue containing an inorganic substance, contains an organic fibrous substance, is low in cost because industrial waste is used as a raw material, and contributes to solving environmental problems. Moreover, this papermaking sludge itself has a function as a binder, and is kneaded with itself or with other industrial waste.
It has the advantage that it can be formed into a desired shape.

[0044] In the papermaking sludge, besides pulp,
And Al_TwoO_Three, SiO_Two, CaO, Na_TwoO, Mg
O, P_TwoO_Five, SO_Three, K_TwoO, TiO_Two, MnO, F
e2O _ThreeOf ZnO and ZnO crystals or their oxides
Precursor sols, or their composites, halogens
At least one selected from calcium carbonate and calcium carbonate,
And it generally contains water.

Here, as shown in FIG.
It is advantageous to mix the inorganic particles 4 therein to improve the fire resistance or to form a strength-expressing substance by reacting with the amorphous material to improve the strength. By doing so, the specific gravity of the composite cured product can also be adjusted.

As the inorganic particles 4, at least one selected from the group consisting of calcium carbonate, calcium hydroxide, shirasu, shirasu balloon, perlite, aluminum hydroxide, silica, alumina, talc, calcium carbonate, and industrial waste powder is used. it can. In particular, as the industrial waste powder, it is desirable to use at least one or more types of industrial waste powder selected from calcined powder of papermaking sludge, grinding dust of glass, and crushed silica sand. This is because by using these industrial waste powders, cost reduction can be realized and furthermore, it can contribute to solving environmental problems.

The inorganic particles obtained by calcining papermaking sludge can be obtained by subjecting papermaking sludge to heat treatment at 300 to 1500 ° C. The inorganic particles thus obtained are:
Since it is amorphous, has excellent strength and toughness, and has a low density, it can be reduced in weight by being dispersed in a composite cured product. In addition, the papermaking sludge is kept at 300 ° C or more and 800 ° C or more.
The inorganic particles obtained by quenching at less than or less than 300 ° C. and then heat-treating at 300 to 1500 ° C. are advantageous because they surely contain an amorphous body. It is desirable that the inorganic particles 4 have a specific surface area of 0.8 to 100 m ² / g. If it is less than 0.8 m ² / g, the contact area between the amorphous material and the inorganic particles becomes small and the strength is reduced.
If it exceeds m ² / g, effects such as crack development and improvement in hardness are reduced, and as a result, strength is reduced.

Further, the inorganic particles 4 may contain at least one or more inorganic substances selected from silica, alumina, iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide and phosphorus pentoxide. desirable. This is because they are chemically stable and have excellent weather resistance, and have desirable characteristics as industrial materials such as building materials.

If the average particle diameter of the inorganic particles 4 is too small or too large, sufficient strength cannot be obtained.
It is desirably in the range of 〜100 μm. The content of the inorganic particles is desirably 10 to 90% by weight. That is, if the amount of the inorganic particles is too large, the strength is lowered, and if the amount of the inorganic particles is too large, the strength becomes brittle, and in any case, the strength is lowered.

The composite cured product 1 produced by the method of the present invention
Is used in various industries, calcium silicate plate,
It can be used for electronic materials such as artificial materials for artificial limbs, artificial bones, artificial dental roots, core substrates of printed wiring boards, interlayer resin insulation layers, as well as new building materials to replace perlite boards, plywood, gypsum boards, etc. it can.

Next, a first embodiment of a method for producing a cured product and a device for producing a cured product according to the present invention will be described with reference to FIGS.
This will be described with reference to FIG. In the production method of the present invention, papermaking sludge is used as a raw material of the composite cured body without kneading with other industrial waste. Examples of the papermaking sludge used in the production method of the present invention include printing / information paper, kraft paper, titanium paper, tissue paper, dust paper, toilet paper, sanitary products, towel paper, industrial hybrid paper or household hybrid paper. The papermaking sludge discharged in the pulp manufacturing process, the raw material processing process of used paper, the papermaking process, and the like at the time of the pulp production is desirable. Paper sludge is handled by Maruto Kiln.

FIG. 3 shows the entire structure of the apparatus for producing a cured body. The apparatus for producing a hardened body includes a raw material adjusting mechanism 10 for adjusting papermaking sludge to generate a slurry 14, a papermaking mechanism 20 for forming a paperboard 26 from the slurry 14, and a dewatering press 40 for pressurizing and dewatering the paperboard 26. And a dryer 50 for drying the pressed paper to form a cured product 1
Press machine 6 for pressing a plurality of single-plate cured bodies 1
It consists of 0.

First, a raw material adjusting mechanism 10 for adjusting the raw material.
Will be described with reference to FIG. Raw material 1 above
1 and water 12 were weighed by suction dehydration described below so that the concentration became 0.5 to 25% by weight of solid content,
And a coagulant (a flocculant: added amount of 0.01 to 4) of aluminum sulfate, ferric chloride, polyaluminum chloride, sodium polyacrylate, polymethacrylate, polyacrylate, or polyacrylamide. 5%) and organic fibers such as vinylon fibers (binder: added amount: 0.1 to 10% by weight).
The mixture is mixed at 3 to prepare a slurry 14. Organic fibers (binders) include synthetic fibers such as polyethylene, polypropylene, and vinylon, pipes, pulp recovered from waste paper,
Besides, fibrous industrial waste can be used. As a raw material, various inorganic powders and resins can be further added to papermaking sludge.

The slurry 14 was placed on the bottom of the filter 1
Suction dehydration is performed using the dehydration container 15 provided with 6.
The concentration is adjusted to 0.5 to 25% by weight of solid content by suction dehydration. In the suction dehydration, since the fibers of the papermaking sludge are not oriented, the resulting composite cured product is less likely to warp or crack.

The bottom of the dewatering vessel 15 is provided with a vacuum pump 17
And suction of water by the operation of the vacuum pump 17. The filter 16 is not particularly limited, but includes a sintered metal, a perforated metal plate (a metal plate having a hole having a diameter of 1 to 5 mm),
A porous ceramic filter, a porous resin, a glass fiber plate or the like can be used. The raw material 14 whose water content has been adjusted in the dehydration container 15 is temporarily stored in a chest tank 18.
The chest tank 18 is provided with a stirring propeller so that solids in the raw material do not settle.

In the present embodiment, the water content is adjusted by the dehydration vessel 15. However, as shown in FIG. 4B, only the amount of water added to the mixer 13 is reduced without using the dehydration vessel 15. It is also possible to adjust the water content with.

Subsequently, the papermaking unit 2 was prepared from the slurry 14 containing the papermaking sludge whose water content had been adjusted by the papermaking mechanism 20.
6 is generated. An inorganic binder such as cement or an organic binder such as a resin may be added to the slurry (raw material solution). The papermaking mechanism 20 will be described with reference to FIG. The papermaking mechanism 20 includes three bats 21A, 21B, and 21C that store the slurry 14, and a wire cylinder 2 that is provided in the bat and that papers the slurry 14.
2A, 22B, 22C and wire cylinders 22A, 2C
A conveyor belt 23 for transferring and conveying the paper body 26 formed by 2B and 22C; a making roll 30 for winding and laminating the paper body 26 conveyed by the conveyor belt 23 to a predetermined thickness; A peeling cutter 31 for cutting and peeling the paper 26 on 30; a cutting cutter 36 for cutting the peeled paper 26 to a length of 2.1 m; and a belt conveyor 38 for transporting the paper 26.
And

Wire cylinders 22A, 22B, 22C
Has a diameter of 70 cm and a width of 1.2 m. In the present embodiment, since the drainage body for draining (papermaking) is formed of a rotating drum (wire cylinder) composed of a net-like body, the papermaking body 26 can be continuously formed from the raw material solution 14,
It is possible to efficiently mass-produce a cured product from papermaking sludge. The water that has passed through the wire cylinders 22A, 22B, 22C is returned to the mixer 13 shown in FIG. 4A via the pipe 17a and the vacuum pump 17.

In the present embodiment, three wire cylinders 22A, 22B, and 22C are provided along the conveyor belt 23, and the papermaking body 26 is transferred onto the conveyor belt 23 while being multi-layered. Therefore, the papermaking product 2
6 can be made with high efficiency, and the cured product can be efficiently mass-produced from papermaking sludge. In this embodiment, the rotation speed of the wire cylinder is set to 60 rotations / minute. This rotation speed is desirably 1 to 100 times / minute. From the raw material solution 14, a paper 26 can be formed with high efficiency,
This is because it is possible to efficiently mass-produce the cured product from the papermaking sludge. Here, if the rotating drum is lower than 1 rotation / minute, the papermaking efficiency is low. On the other hand, if the number of rotations exceeds 100 rotations / minute, it becomes difficult to form a sheet with a uniform thickness. In the present embodiment, the wire cylinders 22A, 22A
Although three B and 22C are provided, any number of one or more can be used.

The wire cylinders 22A, 22B,
The mesh of 22C is $ 60 (the number of meshes per inch is 60)
Is formed. Wire cylinders 22A, 22B,
The mesh size of 22C is preferably $ 40 to 150. From the raw material solution (slurry) 14, a papermaking body 26 can be produced with high efficiency,
This is because it is possible to efficiently mass-produce a high-density cured product from papermaking sludge. Here, if the mesh is coarser than # 40, only the inorganic non-crystalline material comes off from the raw material solution, and the density and strength of the cured product decrease. On the other hand, if the mesh is finer than # 150, the removal of water becomes worse, and it becomes impossible to make a papermaking product from the raw material solution with high efficiency. Since floc is formed in the papermaking sludge (raw material solution) by the coagulant, the papermaking can be performed efficiently.

The concentration of the raw material solution containing papermaking sludge is desirably 0.5 to 25% by weight of solid content. This is because the papermaking property from papermaking sludge can be improved and the cured product can be efficiently mass-produced. That is, if the concentration is less than 0.5%, it cannot be efficiently made from a raw material solution using a wire cylinder (filtration body), and if it exceeds 25%, the uniformity of the product is reduced.

The wire cylinders 22A, 22B, 22C
Conveyor belt 2 that transfers and conveys the paper made by
3 is made of felt having a width of 1.2 m,
A suction boxes 24, 24 and a suction box 27 are provided on the back surface, and dehydration is performed while suction is performed by the vacuum pump 17 and the vacuum pump 28. That is, the belt 23 adsorbs the moisture of the raw material 14 including the papermaking sludge into the pores of the felt, and the adsorbed moisture is adsorbed to the vacuum pump 17 side through the suction box 24, and the mixer shown in FIG. Returned to 13. In the first embodiment, the belt 23 is made of felt, but instead of this, a porous resin having continuous pores, a porous rubber, a material obtained by solidifying inorganic fibers with a binder, a sintered metal, For example, a porous metal, a belt in which a block of a porous metal is fixed with a flexible binder such as rubber, or the like can be used. In the present embodiment, the transport belt 23 is formed of a porous body having continuous pores.
The water is dehydrated in the suction boxes 24 and 24 while being conveyed, so that the water content in the papermaking body 26 can be efficiently reduced. Thereby, the cured body can be constituted homogeneously.

In the present embodiment, the papermaking machine 2 is placed in the suction box 27 placed immediately before the making roll 30.
6 is adjusted to a final weight ratio of 0.9 or less, more preferably 0.8 or less, with respect to the sludge, so that the moisture of the paper-moulded product transferred to the making roll 30 is appropriately adjusted. Can be done. That is, if the water content of the papermaking product 26 exceeds 0.9, it is difficult to transfer the papermaking material from the belt 23 to the making roll 30, and the transferred papermaking product is separated by the centrifugal force generated with the rotation of the making roll 30. However, by reducing the specific gravity by setting the water content to 0.9 or less, the papermaking body does not peel off from the making roll 30, and a cured body can be efficiently produced.

In this embodiment, the transport speed of the transport belt 23 is set to 48 m / min, and the wire cylinders 22A, 22B, 22C are driven by a motor (not shown) so as to synchronize with the transport speed. The making roll 30 and the belt conveyor 38 are driven by a motor (not shown) via a driving roller 34A. The transport speed of the transport belt 23 is desirably 5 to 80 m / min. This is because a paper having an appropriate thickness can be formed from the raw material solution with high efficiency, and the cured body can be efficiently mass-produced. Here, if the conveying speed is lower than 5 m / min, the papermaking body can be made thicker, but the papermaking efficiency is low. On the other hand, if the transport speed exceeds 80 m / min, the papermaking article becomes thinner, making it difficult to obtain a uniform thickness and cutting off the papermaking article.

The making roll 30 for winding and cutting the paper conveyed by the conveyor belt 23 to a predetermined thickness includes:
It is formed so as to have a diameter of 67 cm (outer circumference 2.1 m) and to make one rotation in 7.5 seconds in a counterclockwise direction in the figure.
The making roll 30 includes an elastic member 35 housed in a housing groove 33 formed in parallel with the axis of the roller. The elastic member 35 is made of rubber. The making roll 30 winds the papermaking body 26 conveyed from the conveyor belt 23 on the surface thereof while making it into a multilayer.

Then, the making roll 30 is rotated a predetermined number of times (20 to 30), and the papermaking body 26 has a predetermined thickness (6
〜8 mm), the peeling cutter 31 is pushed out so as to contact the elastic member 35 in synchronization with the rotation of the making roll 30. At the position along the storage groove 32,
Has a high moisture content, and when the peeling cutter 31 is extruded,
It is cut along the storage groove 32, and the cut end falls down to the belt conveyor 38 side as shown in FIG. Then, the rotation of the making roll 30 and the belt conveyor 3
Along with the conveyance of 8, the papermaking body 26 having a predetermined thickness is conveyed onto the belt conveyor 38 (see FIG. 6B). In addition,
The storage groove 32 can be eliminated.

In the first embodiment, the making roll 30
Since the upper paper body is peeled off by pressing against the peeling cutter 31 from the outside, the multilayered paper body 26 can be peeled off cleanly while being transferred to the making roll 30, and efficiently from papermaking sludge. It becomes possible to mass-produce the cured body. In addition, since the cutting of the papermaking body 26 on the making roll 30 is performed when the number of rotations of the making roll 30 reaches a predetermined number, a papermaking body having a uniform thickness can be efficiently generated. In addition, since the peeling cutter 31 is brought into contact with the elastic member 35 to cut the paper body on the making roll 30, the surface of the iron making roll 30 is not damaged by the stainless steel peeling cutter 31.

The reciprocating cycle of the peeling cutter and the rotating cycle of the making roll are synchronized. This is because an elastic member is formed in a part of the making roll, and the cutter comes into contact with the elastic member. This is because if the elastic member is present on the entire making roll, the papermaking body is not transferred. The paper is transferred from a soft substrate to a stiffer substrate. For this reason, an elastic member is provided in a part of the making roll, and the cutter is designed to abut on the elastic member in synchronization with the elastic member.

Here, as shown in FIG. 6C, when the other cut end is conveyed to a position corresponding to the cutting cutter 36,
The cutting cutter 36 is lowered to the belt conveyor 38 side, and the cut end of the papermaking body 26 is separated from the unlaminated paperboard conveyed on the conveyor belt 23.

In the present embodiment, the papermaking material on the conveyor belt 23 is multiplied while being transferred to the making roll 30, and is cut into a predetermined size when the multilayered papermaking material 26 reaches a predetermined thickness. . The uniform thickness (6 to 8 mm) and size (1.2 m ×
Since the papermaking body 26 of 2.1 m) can be continuously formed, the cured product can be efficiently mass-produced.

Further, in this embodiment, a cutting cutter 36 for cutting the papermaking body 26 having one end cut by the making roll 30 at a constant interval is provided. Therefore, the papermaking body 26 having a predetermined length (2.1 m) can be efficiently formed.
In addition, in this embodiment, although the thickness of the papermaking body 26 was set to 6 to 8 mm, the thickness is desirably 2 cm or less. If the thickness is 2 cm or less, papermaking is easy, and handling is easy in transportation and the like.

The dewatering press 40 for pressurizing and dewatering the papermaking product will be described with reference to FIG. As shown in FIG. 7A, the dewatering press 40 includes a flat plate lower die 42 and an upper die 44, and a felt 46 is provided on the surfaces of the lower die 42 and the upper die 44. Here, a felt is used, but instead, various flexible porous bodies such as a filter cloth and a sponge can be used.

The dehydration under pressure in the dehydrating press 40 will be described. First, as shown in FIG. 7B, the cut papermaking body 26 is carried onto the felt 46 of the lower mold 42 by a transport device (not shown). Next, as shown in FIG. 7C, the upper mold 44 is pushed down, and pressure dehydration is performed for 40 to 100 minutes.
The treatment is performed at Kg / cm ² for 10 seconds to 5 minutes, and the water content of the papermaking body 26 is adjusted to less than 0.5 in terms of the weight ratio with respect to the sludge. Thereby, as shown in FIG. 7D, the thickness of the papermaking body 26 is reduced to about half (3 to 5 mm).

In the first embodiment, since the papermaking body 26 is pressed and dewatered with a felt (a flexible porous body) 46 interposed therebetween, the moisture in the cured body is efficiently squeezed out, and the moisture inside the cured body is removed. To prevent nests from forming. Further, it is possible to prevent a paper containing a large amount of water from being deformed by extending in the lateral direction during pressing. Further, since the surface of the papermaking body 26 can be roughened by felt,
As will be described later, the adhesion through the adhesive can be improved.

In the manufacturing method of the first embodiment, since the veneer sheet is dehydrated, the veneer sheet is laminated and then dewatered.

The pressure press is 40 to 100 kg / cm ²
It is desirable to perform in. If the pressing is performed at less than 40 kg / cm ² , the water content cannot be reduced to 0.5 or less. On the other hand, even if the pressure exceeds 100 kg / cm ² , the water content cannot be reduced efficiently, and the press machine becomes larger and more expensive.

After being dehydrated under pressure by the press machine 40 to reduce the water content, it is subsequently substantially completely dehydrated by a dryer 50 shown in FIG. .
Less than 03) The curing reaction proceeds. As a result, a cured product having excellent strength can be produced. The dryer 50 includes the transport roller 5
1 and an outlet 54 for blowing out hot air, and hot air of 130 to 160 ° C. is blown from the upper and lower outlets 54 at a wind speed of 25 m / s to the papermaking body 26 supported by the roller 52 of the transport roller 51. By spraying, the papermaking body 26 undergoes a curing reaction to form a cured body 1. This dryer 50 is used to
Since the hot air is blown from above and dried, the cured body 1 can be formed without causing warpage. The dryer 50 has a hot air outlet 54,
Instead, an infrared heater, steam, a solar dryer, or the like can be used.

The cured product 1 obtained by drying and curing
Has been subjected to pressure dehydration via the felt 46 as described above, so that the surface roughness becomes Rmax 0.01 to 2 mm.

After the cured body 1 is formed by the dryer 50, the cured body 1 is successively laminated by a pressing press 60 shown in FIG. First, as shown in FIG. 9A, after the cured body 1 is placed on the lower mold 62 of the flat plate, the adhesive 66 is evenly applied to the surface of the cured body 1 from the nozzle 65. Here, as the adhesive, for example, vinyl acetate, aqueous vinyl urethane, or the like can be used. Then, as shown in FIG. 9B, four cured bodies 1 are laminated with an adhesive 66 interposed therebetween. Thereafter, the upper mold 64 is pressed down and pressurized at 5 to 40 kg / cm ² for 10 minutes to obtain a cured product laminate 100. Here, the thickness of the adhesive 66 is adjusted to about 0.1 mm. In addition, it is also possible to heat simultaneously with pressurization.

The cured product laminate 100 is further conveyed and cut into a predetermined size by a cutter (not shown). The cutting is performed by a cutter or a saw provided on the conveyor. The cut composite cured body 1 is finally inspected for warpage or the like by an inspection machine (not shown). As an inspection machine, X
Line sensors, infrared sensors, etc. can be used. Further, the presence or absence of chipping or cracking may be inspected by an image processing device or the like.

In the method for producing a cured product according to the first embodiment, the veneer sheet 26 is dehydrated by pressing and then dried. , Easy to manufacture. In addition, since the cured product 1 is laminated with the adhesive 66 interposed therebetween to obtain a cured product laminate 100, the laminate obtained by laminating a single-sheet paper body and then curing is excellent in water resistance and strength. .

In the present embodiment, a plurality of papermaking sludge papermaking products obtained by papermaking the raw material solution using a wire cylinder (filtration body) are laminated. Since it is inefficient to obtain a thick paper by papermaking, a thin paper is efficiently formed from papermaking sludge and a cured product having the required strength and thickness is produced by stacking. As a result, the cured product is efficiently mass-produced from the papermaking sludge.

Further, in the present embodiment, since a coagulant is added to the raw material solution containing papermaking sludge to cause coagulation, the cured product 1 having a uniform specific gravity (in the range of 1.2 to 1.3) is mass-produced from papermaking sludge. can do.

In the manufacturing method according to the present embodiment, the cured product 1 obtained by curing the veneer sheet 26 is laminated with the adhesive 66 interposed therebetween to obtain a cured product laminate 100. here,
By setting the surface roughness of the cured product 1 to Rmax 0.01 to 2 mm, the adhesion between the cured product 1 and the adhesive 66 can be increased, and the strength of the cured product laminate 100 can be increased.

A test result of a change in strength due to the surface roughness of the laminate 100 of the cured product will be described with reference to FIG. First, as shown in FIG. 10 (A), when a bending load is applied to the laminated cured body 100, the surface roughness Rmax 0.0
If it is less than 1 mm, the strength decreases. That is, the surface roughness Rmax
If the thickness is less than 0.01 mm, it is considered that the adhesion between the cured product 1 and the adhesive 66 is reduced, and the strength of the cured product laminate 100 is reduced.

Next, as shown in FIG. 10 (B), a laminated body 100 of the cured body is formed from the central adhesive 66 by protruding the end of the cured body half by half, and is broken by applying a shearing force. Was caused. Here, when the surface roughness Rmax was less than 2 mm, cracks occurred in the cured product 1 and fracture occurred. On the other hand, when the surface roughness Rmax was more than 2 mm, the cured body 1 was separated from the center of the adhesive 66 to the left and right before the cured body 1 was cracked. That is, if the surface roughness exceeds Rmax 2 mm, the amount of the adhesive 66 increases and the adhesiveness decreases,
It is presumed that the surface becomes brittle and the cured body is easily peeled off, and the shear strength of the laminated cured body is reduced.

Example 1 Using the manufacturing apparatus of the first embodiment, immediately before transfer to a making roll, dewatering was performed with a vacuum suction device, and unfired papermaking sludge (trade name: “raw sludge” of Maruto Kiln Co., Ltd.) ": 34% solids, 66% moisture), as described above, cut and peeled by pressing the cutter from the outside, press the paper through felt and press with hot air of 130 °. After drying for 3 hours, a veneer having a thickness of 4 mm was manufactured.

Comparative Example 1 The manufacturing apparatus of the first embodiment was used, but the surface of the making roll had a water storage groove for storing water and a wire for pushing out the papermaking material from the inside. When the paper was multilayered, the wire was extruded and the paper was extruded from the inside and cut. In Example 1, no distortion in the cut surface was observed at all, but in Comparative Example, distortion in the cut surface was observed. For this reason, in the comparative example, it is necessary to cut and remove the vicinity of the cut surface after curing.

Next, an apparatus for manufacturing a cured body according to a second embodiment of the present invention will be described with reference to FIG. The manufacturing apparatus according to the second embodiment includes the first apparatus described above with reference to FIG.
It is almost the same as the manufacturing apparatus of the embodiment. However, in the manufacturing apparatus of the first embodiment, the elastic member 35 is omitted.
The peeling cutter is made of the wire 131. And
In the first embodiment, when the making roll 30 reaches a predetermined rotation, the papermaking body is peeled by the peeling cutter 31.
In the second embodiment, the papermaking body 2 on the making roll 30
6 is detected by a sensor (not shown), and when a predetermined thickness is reached, the wire 131 penetrates the papermaking body 26 and is pressed against the surface of the making roll 30, and in this state, the making roll 30 continues to rotate. As a result, the paper is reliably cut and peeled. In the second embodiment, the wire 1
The use of 31 makes it possible to peel off the papermaking body without damaging the surface of the making roll 30 without an elastic member. Further, there is no need to drive the wire 131 in synchronization with the rotation of the making roll 30.

In the manufacturing apparatus of the second embodiment, the lower die 142 and the upper die 144 of the dewatering press 140 are provided with through holes 148 for draining water. For this reason, during dehydration,
Moisture can be efficiently removed from the papermaking body 26.

Subsequently, an example in which the composite cured product obtained in the above-described steps was analyzed using an X-ray fluorescence analyzer (RIX2100 manufactured by Rigaku) is shown below. It was found that the composition was as follows in terms of oxide. The pulp was calcined at 1100 ° C. and measured from the weight loss. Serial Pulp: 51.4 wt%, SO _3: 0.5 wt% SiO _2: 24.2 wt%, P ₂ O _5: 0.2 wt% Al ₂ O _3: 14.0 wt%, Cl: 0 .2 wt% CaO: 8.0 wt%, ZnO: 0.1 wt% MgO: 1.4 wt%, others: traces TiO _2: 1.0 wt%,

Further, the crystal structure of the composite cured product was confirmed by X-ray diffraction. Charts of the X-ray diffraction are shown in FIGS. 12 and 13, respectively. In addition, X-ray diffraction
Rigaku MiniFlex was used and Cu was targeted. 2θ: A gentle undulation (halo) is observed around 22 °, and a peak indicating a crystal structure is also observed.
It can be seen that the crystal structure is mixed in the amorphous structure. From the peak of the chart shown in FIG. 5, Gehlenite, sy
n, Melilite-synthetic, Gehlenite-synthetic, Anor
thite, ordered was identified.

A composite building material will be described below as an application example of the composite cured body 1. That is, as shown in FIG. 14, in a composite building material in which a reinforcing layer 6 is formed on at least one surface of the core material 5 and on both surfaces in the illustrated example, the composite cured material manufactured by the method of the present invention is applied to the core material 5. Apply 1. That is, by forming the core material 5 into the composite cured body 1 manufactured by the method of the present invention, even when a tensile force is applied to the core material, the core material itself has excellent bending strength, and furthermore, In combination with the provision of the reinforcing layer on the surface, the structure is not easily broken.
Further, even when pressure is locally applied to the surface, no dent or dent occurs.

Further, when the composite building material is used, a decorative layer such as a coating, a decorative panel and a decorative veneer is provided on the reinforcing layer 6, so that the impact resistance is improved, and Is less likely to occur, and the decorative surface is not distorted by the scratches and the design is not deteriorated.

Further, the reinforcing layer 6 has a structure in which the fiber base material 6b is embedded in the resin 6a. It is particularly desirable to use a thermosetting resin for the resin 6a. That is, unlike a thermoplastic resin, a thermosetting resin has excellent fire resistance and does not soften even at a high temperature, so that the function as a reinforcing layer is not lost. As the thermosetting resin, a phenol resin, a memelamine resin, an epoxy resin, a polyimide resin, a urea resin and the like are suitable. In order to impart sufficient rigidity, impact resistance, and even higher fire resistance to the reinforcing layer, the content of the thermosetting resin in the reinforcing layer is desirably in the range of 10% by weight to 65% by weight.

On the other hand, it is desirable to use inorganic fibers for the fiber base 6b. This is because the strength of the reinforcing layer 6 can be improved and the coefficient of thermal expansion can be reduced. Low-cost and heat-resistant use of at least one of inorganic fibers, glass fiber, rock wool, ceramic fiber, glass fiber chopped strand mat, glass fiber roving cloth, glass fiber continuous strand mat, and glass fiber paper It is preferable in terms of excellent properties and strength. This fiber base material is a material obtained by molding a discontinuous fiber into a mat shape, or a material obtained by cutting continuous long fibers into a mat shape by cutting into 3 to 7 cm (a so-called chopped strand mat), and dispersing in water to form a sheet. A material obtained by piling up, a continuous long fiber spirally laminated to form a mat, or a continuous long fiber woven is applicable.

Further, the thickness of the reinforcing layer is 0.1 mm to
It is desirable to be 3.5 mm. This is because, if it is set in this range, sufficient rigidity and impact resistance can be obtained, and high workability can be maintained. The reinforcing layer may contain a flame retardant such as aluminum hydroxide and magnesium hydroxide, and a commonly used inorganic binder such as silica sol, alumina sol, and water glass. Here, the reinforcing layer is provided, but the surface may be coated with a resin or the like so that the cured body does not absorb moisture.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a composite cured product of the present invention.

FIG. 2 is a schematic cross-sectional view of a composite cured product of the present invention.

FIG. 3 is a conceptual diagram of an apparatus for manufacturing a cured body according to the first embodiment of the present invention.

FIGS. 4A and 4B are conceptual diagrams of a raw material adjustment mechanism.

FIG. 5 is a conceptual diagram of a papermaking mechanism.

FIGS. 6A, 6B, and 6C are explanatory diagrams of the operation of the making roll.

FIGS. 7A, 7B, 7C, and 7D are explanatory diagrams of the operation of the dehydration press.

FIG. 8 is an explanatory diagram of a dryer.

FIGS. 9A, 9B, and 9C are explanatory diagrams of the operation of the crimping press.

FIGS. 10A and 10B are explanatory diagrams of a strength test of the laminate according to the first embodiment.

FIG. 11 is a conceptual diagram of an apparatus for manufacturing a cured body according to a second embodiment of the present invention.

FIG. 12 is an X-ray diffraction chart of the composite cured product according to the embodiment.

FIG. 13 is an X-ray diffraction chart of the composite cured product according to the embodiment.

FIG. 14 is a schematic cross-sectional view of a composite building material using the composite cured body of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Composite hardened body 2 Amorphous body 3 Fibrous material 4 Inorganic powder 5 Core material 6 Reinforcement layer 10 Raw material adjustment mechanism 14 Raw material solution (slurry) 15 Dehydration container 16 Filter 17 Vacuum pump 18 Chest tank 20 Papermaking mechanism 21A, 21B, 21C Butt 22A, 22B, 22C Wire Cylinder 23 Conveyor Belt 24 Suction Box 26 Papermaking 27 Suction Box 28 Vacuum Pump 30 Making Roll 31 Peeling Cutter 32 Storage Groove 33 Housing Groove 35 Elastic Member 36 Cutting Cutter 38 Belt Conveyor 40 Dehydrating Press Machine 42 Lower mold 44 Upper mold 46 Felt 50 Dryer 52 Transport roller 54 Blow-out port 60 Crimping press 66 Adhesive 100 Laminated body of cured body 131 Wire

Continued on the front page (72) Inventor Satoshi Takahashi 2-1-1 Kanda-cho, Ogaki-shi, Gifu F-term in Ibiden Co., Ltd. (Reference) 4L055 AG99 AH01 BF02 CJ02 FA22 GA22

Claims (5)

[Claims] 1. A raw material solution containing papermaking sludge is paper-formed using a filter body, a papermaking sludge paperwork is attached to the surface of the filter body, and the papermaking body is transferred to a conveyor belt and then transferred, and then transferred. The method for producing a cured product of a papermaking body on a belt, which is multilayered while being transferred to a hard roller, peels off the multilayered papermaking product, and cures the papermaking product to obtain a cured product of papermaking sludge. A method for producing a cured product, which comprises removing a paper body by cutting it from the outside. 2. A raw material solution containing papermaking sludge is formed using a filter body, a papermaking sludge paperboard is attached to the surface of the filter body, and the papermaking body is transferred to a conveyor belt and then transferred. The paper body on the belt is multilayered while being transferred to a hard roller, the multilayered paper body is peeled off, and the hardened paper body is cured to obtain a hardened body of papermaking sludge. An apparatus for manufacturing a cured product, wherein the papermaking product is peeled off by being cut by pressing a blade from the outside. 3. An elastic member is provided on an outer periphery of the hard roller and parallel to an axis, and the blade is brought into contact with the elastic member in synchronization with rotation of the hard roller. 3. The apparatus for producing a cured product according to claim 2, wherein the papermaking product is cut. 4. The apparatus according to claim 2, wherein the blade is formed of a wire. 5. The hardened body according to claim 2, wherein the cutting of the papermaking body on the hard roller is performed when the number of rotations of the hard roller reaches a predetermined number. Manufacturing equipment.