JP2006083507A - Nonflammable compressed fiber panel and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To satisfy needs for nonflammability in using a nonflammable compressed fiber panel as building materials with making use of characteristics of conventional structural fiber panels such as light weight and high strength in the nonflammable compressed fiber panel. <P>SOLUTION: The noncombustible compressed fiber panel 1 has a structure in which an open cell lattice 2 constituted of two or more libs 2a, a continuous flat plate 3 covering the one open port of the lattice 2 and a flange 4 covering a part of the other open port are integrally formed with a compacted compressed fiber material and the shape of the open cell lattice 2 is almost hexagonal column. About 90 wt.% of the compressed fiber material constituting the nonflammable compressed fiber panel 1 comprises a nonflammable inorganic material. Therefore, the nonflammable compressed fiber panel 1 has nonflammability in addition to characteristics of the compressed fiber panel such as light weight and high strengths and is widely applied to building materials such as inside walls/partitions of buildings to which conventional flammable compressed fiber panels comprising 100% recovered pulp have not been applied. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a compressed fiber panel formed by dehydrating and compressing water-containing raw fiber, having both strength and non-combustibility, and a non-combustible compressed fiber panel that can be widely used for building materials and the like, and a method for producing the same It is about.

  Conventionally, as shown in Patent Document 1, a fiber panel having an open cell lattice formed by pulping with a strong stirring force using wood fiber, recovered waste paper, or the like as a raw material, and dehydrating and heat-compressing is known. This fiber panel is manufactured using a compression apparatus having a porous carrier and a mold having a plurality of elastomer pads regularly arranged thereon, and the plurality of elastomer pads has a hexagonal column shape. In addition, the open cell lattice has a honeycomb structure in which the periphery of a hexagonal column-shaped hole is edged with a flange. A lightweight and high-strength structural fiber panel can be obtained by combining the flange portions and bonding the fiber panels having two open cell lattices.

  However, in the conventional manufacturing method, the moisture content of the raw material fibers placed on the mold is as high as about 85% to 90%, and the raw material fibers having a high moisture content are subjected to steps such as pre-pressing and heat compression molding. In addition, since the fiber panel having a moisture content of about 8% was dehydrated using electrical energy, there was a problem that the power consumption associated with the production was large and the production cost was high.

On the other hand, as shown in Patent Document 2, first, raw material fibers having a paper stock concentration of 0.5 to 3% are placed as raw material fibers to be filled in the lower part of the mold, and then the mold is formed. It is a two-stage casting process in which raw fiber having a lower water content is cast as raw material fiber to be filled in the lower part of the material, or a raw material fiber having low water content and poor flowability is used as an elastomer. By pressing between the pads and using high-frequency induction heating instead of a heater as a heating means in the heating and compression process, the raw material fibers in the mold having an elastomer pad with poor thermal conductivity are efficiently heated. ing.
Japanese Patent No. 3048529 JP 2000-256998 A

  However, the conventional fiber panels as described in Patent Document 1 and Patent Document 2 are products using 100% recovered waste paper (that is, an organic substance called cellulose fiber) as a raw material fiber. In addition, there is a problem in that it has no water resistance and cannot satisfy the requirements of nonflammability and water resistance for use as a building material.

  Therefore, the present invention provides a non-combustible compressed fiber panel that can satisfy the requirements of non-combustibility and water resistance for use as a building material while utilizing the characteristics of a conventional structural fiber panel that is lightweight and high in strength, and a method for producing the same It is a problem to provide.

  The noncombustible compressed fiber panel according to the invention of claim 1 uses a formwork composed of a porous carrier and a plurality of elastomer pads geometrically arranged and fixed on the plate surface of the porous carrier, An open cell lattice composed of a plurality of ribs, a continuous flat plate covering one opening of the lattice, and a flange covering a part of the other opening are integrally formed of a dense compressed fiber material. A compressed fiber panel having a structure containing a non-combustible inorganic material in the range of about 70% to about 95% by weight.

  A non-combustible compressed fiber panel according to a second aspect of the present invention is the non-combustible compressed fiber panel using the hydrous magnesium silicate (sepiolite) and / or rock wool and / or glass fiber as the non-combustible inorganic material. It is.

  A noncombustible compressed fiber panel according to a third aspect of the present invention is the composition of the first or second aspect, wherein about 20% by weight to about 60% by weight of hydrous magnesium silicate (sepiolite) as the noncombustible inorganic material. And rock wool in a range of about 20% to about 60% by weight.

  A noncombustible compressed fiber panel according to a fourth aspect of the present invention is the composition according to any one of the first to third aspects, wherein waste paper or pulp is blended as a fiber material in a range of about 1 wt% to about 15 wt%. It is a thing.

  A nonflammable compressed fiber panel according to a fifth aspect of the present invention has a bulk specific gravity in the range of about 0.2 to about 0.5 in any one of the first to fourth aspects.

  The noncombustible compressed fiber panel according to the invention of claim 6 is obtained by applying an inorganic water permeation preventive agent to the surface of any one of claims 1 to 5.

  A noncombustible compressed fiber panel according to a seventh aspect of the invention is obtained by blending a waterproofing agent in any one of the first to fifth aspects.

  A noncombustible compressed fiber panel according to an eighth aspect of the invention is obtained by blending a release agent in any one of the first to seventh aspects.

  In the method for producing a noncombustible compressed fiber panel according to the invention of claim 9, hydrous magnesium silicate (sepiolite) and rock wool are blended in the range of about 70 wt% to about 95 wt% as noncombustible inorganic materials. A step of defibrating the raw material with a pulper to obtain a slurry, a step of adding a reinforcing agent and a water-resistant agent, adjusting to an acidic region, and then adding a flocculant to obtain a coagulated paper material that is completely solid-liquid separated; The coagulated paper is slurried in a concentration of 0.5 to 3%, poured into a mold having a plurality of elastomer pads geometrically arranged and fixed on the surface of the porous carrier, and vacuum sucked from below the porous carrier. And dewatering by a pre-press compressed by a pair of press plates from above and below while being dehydrated by vacuum suction from below the porous carrier, and a pair of heaters with a built-in heater. Heated compressed from above and below by the scan plate is to and a hot pressing step.

  The method for producing a non-combustible compressed fiber panel according to the invention of claim 10 comprises the step of adding a mold release agent after making the coagulated paper material into a slurry having a concentration of 0.5 to 3% in the structure of claim 9. It is added.

  The noncombustible compressed fiber panel according to the invention of claim 1 uses a formwork composed of a porous carrier and a plurality of elastomer pads geometrically arranged and fixed on the plate surface of the porous carrier. An open cell lattice composed of ribs, a continuous flat plate covering one opening of the lattice, and a flange covering a part of the other opening are integrally formed of a dense compressed fiber material. A fiber panel containing a non-combustible inorganic material in a range of about 70 wt% to about 95 wt%.

  Here, examples of the “incombustible inorganic material” include hydrous magnesium silicate (sepiolite), attapulgite (concave bar stone), rock wool, wollastonite, zonotolite, magnesium hydroxide and the like.

  The non-combustible inorganic material is blended in the range of about 70 wt% to about 95 wt%, and is composed of a porous carrier and a plurality of elastomer pads that are geometrically arranged and fixed on the plate surface of the porous carrier. Using an open mold, an open cell lattice composed of a plurality of ribs, a continuous flat plate covering one opening of the lattice, and a flange covering a part of the other opening are integrated by a dense compressed fiber material. By forming a fiber panel having a molded structure, the panel has a light weight, high strength and non-combustibility, and can be applied as a building material.

  Here, the blending range of the incombustible inorganic material is set to about 70% by weight to about 95% by weight. When the amount is less than about 70% by weight, sufficient incombustibility cannot be obtained. This is because the compounding component becomes too small to obtain a dense compressed fiber material.

  In this way, a non-combustible compressed fiber panel that can satisfy the requirement of non-combustibility for use as a building material while utilizing the characteristics of a conventional structural fiber panel that is lightweight and high in strength.

  The noncombustible compressed fiber panel according to the invention of claim 2 uses water-containing magnesium salt silicate and / or rock wool and / or glass fiber as the noncombustible inorganic material. Hydrous magnesium salt silicate, rock wool and glass fiber are inorganic materials, hydrous magnesium salt silicate has a melting point of about 1550 ° C., rock wool has a melting point of 1000 ° C. or more, and glass fiber depends on the type, for example, melting point is 840 ° C. , And incombustible material with extremely excellent heat resistance. Therefore, if these are blended as non-combustible inorganic materials in the range of about 70% by weight to about 95% by weight and a compressed fiber panel is manufactured according to the conventional method for manufacturing a structural fiber panel, it is lightweight and has high strength. In addition, a non-combustible compressed fiber panel can be obtained and can be applied as a building material.

  In this way, it becomes a non-combustible compressed fiber panel that can satisfy the requirement of non-combustibility for use as a building material or the like while utilizing the characteristics of a conventional structural fiber panel that is lightweight and high in strength.

  In the noncombustible compressed fiber panel according to the invention of claim 3, the non-combustible inorganic material includes hydrous magnesium silicate silicate of about 20 wt% to about 60 wt% and rock wool of about 20 wt% to about 60 wt%. It is blended within the range. Of course, the total amount of hydrous magnesium silicate and rock wool should be in the range of about 70% to about 95% by weight. As a result of diligent experimental studies, the present inventors have found that a non-combustible inorganic material containing hydrous magnesium silicate within a range of about 20 wt% to about 60 wt% and rock wool within a range of about 20 wt% to about 60 wt%. It has been found that good results can be obtained when blended, and the present invention has been completed based on this finding.

  In this way, it becomes a non-combustible compressed fiber panel that can satisfy the requirement of non-combustibility for use as a building material or the like while utilizing the characteristics of a conventional structural fiber panel that is lightweight and high in strength.

  In the incombustible compressed fiber panel according to the invention of claim 4, waste paper or pulp is blended as a fiber material in a range of about 1 wt% to about 15 wt%. Thus, combustible waste paper or pulp (cellulosic fiber) is blended first in order to strengthen the structure of the fiber panel, and secondly in order to contribute to the recycling of waste paper. The third is for cost reduction. Therefore, it is more desirable to use waste paper than genuine pulp.

  In this way, it becomes a non-combustible compressed fiber panel that can satisfy the requirement of non-combustibility for use as a building material or the like while utilizing the characteristics of a conventional structural fiber panel that is lightweight and high in strength.

  In the nonflammable compressed fiber panel according to the invention of claim 5, the bulk specific gravity is in the range of about 0.2 to about 0.5. As described above, even if the bulk specific gravity is reduced, the noncombustible compressed fiber panel according to the present invention can ensure sufficient strength, and the labor for transportation and construction can be remarkably reduced by using it as a building material. Can contribute to the ease and speed of construction.

  In this way, it becomes a non-combustible compressed fiber panel that can satisfy the requirement of non-combustibility for use as a building material or the like while utilizing the characteristics of a conventional structural fiber panel that is lightweight and high in strength.

  The noncombustible compressed fiber panel according to the invention of claim 6 is obtained by applying an inorganic water permeation preventive agent to the surface. As a result, the incombustible compressed fiber panel of the present invention has not only incombustibility but also waterproof, water resistance and water repellency, and not only for applications such as internal walls and partitions, but also for outdoor applications such as external walls. It will be tolerable.

  In this way, the non-combustible compressed fiber panel that can satisfy the requirement of water resistance in addition to the non-combustibility for use as a building material, etc. while utilizing the characteristics of the conventional structural fiber panel that is lightweight and high in strength Become.

  The non-combustible compressed fiber panel according to the invention of claim 7 is blended with a waterproofing agent. As a result, the incombustible compressed fiber panel of the present invention has not only incombustibility but also waterproof, water resistance and water repellency, and not only for applications such as internal walls and partitions, but also for outdoor applications such as external walls. It will be tolerable. And since the operation | work of apply | coating an inorganic water-permeation preventive agent on the surface after shape | molding a noncombustible compressed fiber panel is unnecessary, it becomes lower cost.

  In this way, the non-combustible compressed fiber panel that can satisfy the requirement of water resistance in addition to the non-combustibility for use as a building material, etc. while utilizing the characteristics of the conventional structural fiber panel that is lightweight and high in strength Become.

  The nonflammable compressed fiber panel according to the invention of claim 8 is a mixture of a release agent. Usually, a small amount of an organic synthetic resin is also added to the raw material of the noncombustible compressed fiber panel in order to impart adhesive strength. However, since such an organic synthetic resin is melted by heating and exhibits viscosity, it may stick to a press plate in the heating and compression process, which is the final process of the incombustible compressed fiber panel, and the mold release may be deteriorated. Accordingly, by blending a release agent into the raw material of the noncombustible compressed fiber panel, a noncombustible compressed fiber panel that is smoothly released and is shaped can be obtained.

  In this way, it becomes a non-combustible compressed fiber panel with a well-formed shape that can satisfy the requirement of non-combustibility for use as a building material etc. while utilizing the characteristics of a conventional structural fiber panel that is lightweight and high in strength. .

  According to a ninth aspect of the present invention, there is provided a method for producing a noncombustible compressed fiber panel comprising a pulper comprising a raw material in which hydrous magnesium silicate and rock wool are blended as noncombustible inorganic materials in a range of about 70 wt% to about 95 wt%. The slurry is obtained by defibration to obtain a slurry, and after adding a reinforcing agent and a water-resistant agent and adjusting to an acidic region, a coagulant is added to obtain a coagulated paper material that is completely solid-liquid separated. Then, the coagulated paper material is poured into a mold having a plurality of elastomer pads geometrically arranged and fixed on the plate surface of the porous carrier as a slurry having a concentration of 0.5 to 3%, from below the porous carrier. Dehydrate by vacuum suction. Furthermore, it is lightweight and high strength by a pre-press process that compresses with a press plate from above and below while vacuum suctioning from the bottom of the porous carrier and dewatering, and a hot press process that heats and compresses from above and below with a press plate with a built-in heater. A noncombustible compressed fiber panel having noncombustibility is obtained.

  Here, the reason for adjusting to the acidic region is to increase the yield of other additives and to improve the yield and drainage by fixing to an inorganic material because the paper stock is alkaline.

  In this way, a non-combustible compressed fiber panel that can satisfy the requirement of water resistance in addition to non-combustibility for use as a building material while utilizing the characteristics of a conventional structural fiber panel that is lightweight and high in strength. It becomes a manufacturing method.

  In the method for producing a non-combustible compressed fiber panel according to the invention of claim 10, a step of adding a release agent is added after the coagulated paper is made into a slurry having a concentration of 0.5 to 3%. Usually, a small amount of an organic synthetic resin is also added to the raw material of the noncombustible compressed fiber panel in order to impart adhesive strength. However, since such an organic synthetic resin is melted by heating and exhibits viscosity, it may stick to a press plate in the hot press process, which is the final process of the noncombustible compressed fiber panel, and the mold release may be deteriorated. Accordingly, by blending a release agent into the raw material of the noncombustible compressed fiber panel, a noncombustible compressed fiber panel that is smoothly released and is shaped can be obtained.

  In this way, while taking advantage of the characteristics of conventional structural fiber panels that are lightweight and high in strength, in addition to non-flammability for use as building materials, etc., well-formed non-flammability It becomes a manufacturing method of a compression fiber panel.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5. Fig.1 (a) is a perspective view which shows a part of completed state of the nonflammable compressed fiber panel concerning embodiment of this invention, (b) is a partial top view. Fig.2 (a) is a perspective view which shows the formwork for manufacturing the nonflammable compressed fiber panel concerning embodiment of this invention, (b) is the elements on larger scale. 3 (a), 3 (b), and 3 (c) are explanatory views showing the procedure of the method for manufacturing the non-combustible compressed fiber panel according to the embodiment of the present invention. FIG. 4 is a view showing the incombustibility of the noncombustible compressed fiber panel according to the embodiment of the present invention in comparison with a conventional compressed fiber panel made of 100% recycled paper. FIG. 5 is an explanatory view showing a process of forming the flange of the noncombustible compressed fiber panel according to the embodiment of the present invention.

  As shown in FIGS. 1A and 1B, a noncombustible compressed fiber panel 1 according to the present embodiment includes an open cell lattice 2 constituted by a plurality of ribs 2a and one opening of the lattice 2. The continuous flat plate 3 that covers the surface and the flange 4 that covers a part of the other opening have a structure integrally formed of a dense compressed fiber material, and the shape of the open cell lattice 2 is substantially a regular hexagon. It is columnar. And about 90 weight% of the compressed fiber material which comprises the nonflammable compressed fiber panel 1 consists of a nonflammable inorganic material. As a result, the incombustible compressed fiber panel 1 has incombustibility in addition to the characteristics of the compressed fiber panel that is lightweight and high in strength. The range of application will be expanded to the use of building materials such as inner walls and partitions of buildings that could not be used.

  Next, the formwork for manufacturing the incombustible compressed fiber panel 1 according to the present embodiment will be described with reference to FIG. As shown in FIG. 2 (a), the mold 11 for producing the non-combustible compressed fiber panel 1 according to the present embodiment is a porous plate made of a metal plate having a large number of small holes 12a formed on the entire surface. A porous carrier 12, a number of elastomer pads 13 fixed to the porous carrier 12 with a predetermined geometrical arrangement and a mutual interval, and a stopper plate 14 surrounding the porous carrier 12. .

  As a method of fixing the elastomer pad 13 to the porous carrier 12, in this embodiment, the metal porous carrier 12 coated with a primer is pressed against an unsolidified elastomer that has been put into a mold to solidify it. After that, the porous carrier 12 and the elastomer pad 13 were integrated. The elastomeric pad 13 is usually arranged evenly on the surface of the porous carrier 12 by a geometric pattern. The elastomer pad 13 can be formed of any material as long as it has sufficient elastomer elasticity. For example, various synthetic rubbers including silicon rubber, chlorobrene rubber, etc. can be used. In this embodiment, silicon rubber having particularly excellent characteristics in terms of durability and elasticity is used.

  Further, in the present embodiment, as shown in the enlarged view of FIG. 2B, the open cell lattice 2 of the noncombustible compressed fiber panel 1 is obtained by making the cross section of the elastomer pad 13 a substantially regular hexagon. Is a substantially regular hexagonal prism shape. When the elastomer pad 13 is not pressurized, the ratio of the diameter d of the top of the elastomer pad 13 to the diameter e of the bottom is preferably d / e ≦ 1.2. If d / e> 1.2, the flange portion may be broken during demolding. Further, by making the hardness of the elastomer pad 13 softer and flexible, when a pressure is applied to the porous carrier 12 in a vertical direction, the elastomer pad 13 is consolidated into a portion surrounding the base portion of each elastomer pad 13. The amount of deposited fibers can be increased and the area of the flange 4 protruding into the open cell grid 2 can be increased.

  In the present embodiment, the elastomer pad 13 has a sufficient height and flexibility, and when pressed perpendicular to the porous carrier 12, the fiber material around the base of the elastomer pad 13 is , Where it adheres to the porous carrier 12 and is pressed against the porous carrier 12 and compressed. This is because since the elastomer pad 13 is fixed to the porous carrier 12, it is impossible to locally extend the elastomer pad 13 in the direction parallel to the surface of the porous carrier 12 at the base of the elastomer pad 13. Occur. The resulting pressure captures a portion of the deposited fibers around the base of the elastomeric pad 13 and compresses to form a flange 4 that is integrally formed with the portion 2b that forms the walls or ribs of the open cell grid 2.

  Such a flange 4 can reinforce the grid 2 and increase the rigidity of the noncombustible compressed fiber panel 1 by covering about 5% to about 15% of the area in the open cell grid 2. In addition, this incombustible compressed fiber panel 1 can be used alone, but in the case of forming a multilayer incombustible compressed fiber panel in which two or more incombustible compressed fiber panels 1 are bonded together, adhesion is achieved. The contact area for can be increased. As an application for building materials, etc., the flange 4 sides of two non-combustible compressed fiber panels 1 are usually bonded together and used as a board without an opening.

  A specific manufacturing method will be described with reference to FIGS. The raw materials are 48% by weight of hydrous magnesium silicate (sepiolite), 40% by weight of rock wool, 8% by weight of waste paper, 2% by weight of acrylic resin, 1% by weight of epoxy resin, and 1% by weight of neutral sizing agent. A slurry was obtained by blending and defibrating and mixing with a laboratory pulper. The slurry concentration was adjusted to 3.0%, and further adjusted to pH 5 with aluminum sulfate. In consideration of the drainage of the slurry, a coagulant was added to obtain a coagulated paper material that was completely solid-liquid separated.

  The coagulated paper material thus produced is poured into a mold 11 as a slurry S1 having a concentration of 1.2% as shown in FIG. 3 (a), and is formed by vacuum suction from below the porous carrier 12 of the mold 11. did. In this case, the drain time was 45 to 50 seconds, and the water content after demolding was 75% by weight. Thereafter, a non-combustible compressed fiber panel 1 was obtained as a molded body after 5 seconds of dehydration process by pre-press shown in FIG. 3B and 13 minutes of hot press process shown in FIG.

  In this embodiment, 48% by weight of hydrous magnesium silicate (sepiolite) is used, but 48% by weight of attapulgite may be used instead, and 48% by weight of sepiolite and attapulgite is used. May be.

About the incombustibility of the obtained incombustible compressed fiber panel 1, it tested about what bonded together the incombustible compressed fiber panel 1 with the flange 4 side inside, and the incombustible compressed fiber panel 1 itself. The results are shown in FIGS. 4 (a) and 4 (b). As shown in FIG. 4 (a), the two non-combustible compressed fiber panels 1 bonded together have a total heat generation as compared with the case of one non-combustible compressed fiber panel 1 shown in FIG. 4 (b). Although the amount is slightly large, both are much smaller than 8MJ / m ² , which is a measure of nonflammability, and are found to be nonflammable.

  Here, in the compression dehydration step by the pre-press shown in FIG. 3B and the hot press step shown in FIG. 3C, the upper mold 15A is attached to the elastomer pad 13 fixed on the porous carrier 12. , 17A, pressure is applied to the porous carrier 12 in the vertical direction via the deposited fibers S2 and S3. Then, the elastomer pad 13 is deformed from the original trapezoidal cross-sectional shape to the cross-sectional shape as shown in FIG. Since the bottom portion of the elastomer pad 13 is fixed to the porous carrier 12, the size of the bottom portion hardly changes. However, the middle part of the elastomer pad 13 spreads horizontally due to the pressure applied from above. By this expansion action, the deposited fibers are consolidated not only in the vertical direction but also in the horizontal direction.

  When the pressure by the upper mold 17A is released, the elastomer pad 13 returns to its original shape by the elastic force of the elastomer pad 13 as shown in FIG. And as FIG.5 (b) and (c) show, the flange 4 protrudes in the opening part of the completed noncombustible compressed fiber panel 1 over the perimeter. In this way, when the openings of the two non-combustible compressed fiber panels 1 are bonded together to form a single board, the area of the flange 4 is large, so the bonding area can be widened and firmly A bonded non-combustible board is obtained.

  The compressive force applied in the hot pressing step shown in FIG. 3 (c) is used to remove the non-combustible compressed fiber panel 1 from the porous carrier 12 and, if necessary, a new one for the next processing. It is sufficient to provide the incombustible compressed fiber panel 1 with sufficient strength to be transferred to a place. In order to facilitate the removal of the non-combustible compressed fiber panel 1, it is also preferable to utilize air pressure through the porous carrier 12.

  Although the case where the cross-sectional shape of the elastomer pad 13 is a substantially regular hexagon has been described in the present embodiment, an elastomer pad having another cross-sectional shape may be used.

  In practicing the present invention, the configuration, shape, quantity, material, size, connection relationship, etc. of other parts of the noncombustible compressed fiber panel, and other steps of the method for producing the noncombustible compressed fiber panel, The present invention is not limited to this embodiment.

Fig.1 (a) is a perspective view which shows a part of completed state of the nonflammable compressed fiber panel concerning embodiment of this invention, (b) is a partial top view. Fig.2 (a) is a perspective view which shows the formwork for manufacturing the nonflammable compressed fiber panel concerning embodiment of this invention, (b) is the elements on larger scale. 3 (a), 3 (b), and 3 (c) are explanatory views showing the procedure of the method for manufacturing the non-combustible compressed fiber panel according to the embodiment of the present invention. FIG. 4 is a view showing the incombustibility of the noncombustible compressed fiber panel according to the embodiment of the present invention in comparison with a conventional compressed fiber panel made of 100% recycled paper. FIG. 5 is an explanatory view showing a process of forming the flange of the noncombustible compressed fiber panel according to the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nonflammable compressed fiber panel 2 Open cell lattice 3 Continuous flat plate 4 Flange 11 Mold 12 Porous carrier 13 Elastomer pad 15A, 15B, 17A, 17B Press plate 18A, 18B Heater

Claims (10)

An open cell lattice comprising a plurality of ribs using a formwork composed of a porous carrier and a plurality of elastomer pads geometrically arranged and fixed on a plate surface of the porous carrier, and the lattice A continuous flat plate covering one of the openings and a flange covering a part of the other opening are compressed fiber panels having a structure integrally formed of a dense compressed fiber material,
A non-combustible compressed fiber panel comprising a non-combustible inorganic material blended in a range of about 70 wt% to about 95 wt%.   The incombustible compressed fiber panel according to claim 1, wherein hydrous magnesium silicate (sepiolite) and / or rock wool and / or glass fiber is used as the incombustible inorganic material.   The non-combustible inorganic material is characterized in that hydrous magnesium silicate (sepiolite) is blended in an amount of about 20 wt% to about 60 wt% and rock wool in a range of about 20 wt% to about 60 wt%. Claim | item 1 or claim | item 2 nonflammable compressed fiber panel.   The noncombustible compressed fiber panel according to any one of claims 1 to 3, wherein waste paper or pulp is blended in a range of about 1 wt% to about 15 wt% as the fiber material.   The noncombustible compressed fiber panel according to any one of claims 1 to 4, wherein the bulk specific gravity is in the range of about 0.2 to about 0.5.   The nonflammable compressed fiber panel according to any one of claims 1 to 5, wherein an inorganic water permeation preventive agent is applied to the surface.   The nonflammable compressed fiber panel according to any one of claims 1 to 5, wherein a waterproofing agent is blended.   The noncombustible compressed fiber panel according to any one of claims 1 to 7, wherein a release agent is blended. A step of pulverizing a raw material in which water-containing magnesium silicate (sepiolite) and rock wool are blended in a range of about 70 wt% to about 95 wt% as a non-combustible inorganic material with a pulper to obtain a slurry;
Adding a reinforcing agent and a water-resistant agent, adjusting to an acidic region, and then adding a flocculant to obtain a coagulated paper material that is completely solid-liquid separated;
The coagulated paper stock is poured into a mold having a plurality of elastomer pads fixed geometrically on the plate surface of the porous carrier as a slurry having a concentration of 0.5 to 3%, and vacuum is applied from below the porous carrier. Sucking and dehydrating; and
Dehydrating by a pre-press compressed from above and below by a pair of press plates while dewatering by vacuum suction from under the porous carrier;
A method for producing a non-combustible compressed fiber panel, comprising: a hot press process in which a pair of press plates with a built-in heater is heated and compressed from above and below. The method for producing a non-combustible compressed fiber panel according to claim 9, wherein a step of adding a release agent is added after the condensed paper material is made into a slurry having a concentration of 0.5 to 3%.

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