JP4137937B2 - Plaster board for building material, method for producing the same, and building using the same - Google Patents

Description

  The present invention relates to plaster as a building material, and in particular, by applying plaster having properties such as humidity control and chemical substance suction to a fire-resistant lightweight board in advance, it eliminates the need for on-site application and shortens the construction period, etc. It is related to the technology that can be achieved.

  The technology described below has been studied by the present inventors in completing the present invention, and the outline thereof is as follows.

  The characteristic of stucco as an interior coating (interior coating) material is that stucco has various properties such as humidity control, chemical substance suction, fire resistance, and antifungal properties. However, because of poor wettability as a wet building material, traditional on-site application by craftsmen is still performed.

  On the other hand, unlike plaster, what is called a plaster-based paint pursuing ease of application is generally commercially available. Such a plaster-based paint is usually provided in a solution state, and even an amateur can easily apply a roller to a wall or the like. However, such a stucco paint has a very low mixing ratio of slaked lime, which is the main component of stucco, so it imitates only the external parts such as elegance of the stucco finish, The above characteristics are ignored.

  For this reason, plaster-based paints do not fully exhibit the characteristics inherent to plaster, and are clearly different from plaster, although they are clearly indistinguishable in words. The functional aspects such as humidity control, chemical suction, fire resistance, and antifungal properties of plaster are ignored.

  Patent Document 1 discloses a plaster paint that can be roller-coated to prevent high reflection and glare by mixing a resin or the like with a plaster component. Patent Document 2 discloses a configuration in which plaster is applied to an inorganic fiberboard such as a plasterboard or cement board that is familiar to plaster. Patent Document 3 also discloses a configuration in which plaster is applied to an inorganic base material such as a gypsum board.

Patent Document 4 discloses a configuration in which plaster itself is formed in a plate shape. Patent Document 5 discloses a configuration of a laminate in which a decorative layer obtained by impregnating a mixture of calcium hydroxide and water over the entire thickness of a fiber sheet such as polyester fiber is laminated on a base material.
JP 2003-268261 A Japanese Patent Laid-Open No. 11-62051 JP-A-8-73253 Japanese Patent Laid-Open No. 11-100833 JP-A-8-72195

  The present inventor considered that the damage can be sufficiently suppressed by replacing the interior material of a building such as a house with plaster against the health damage caused by sick house syndrome, which has been particularly problematic in recent years.

  As for the plaster construction, the construction unit price is remarkably high now. This is partly due to the fact that there are fewer stucco craftsmen, but the main cause is the time and effort of on-site application. In the construction procedure, where plastering is applied with a lacquer finish and relies on natural drying each time, the construction period must be extended. Therefore, plaster construction has become very expensive, and it is not so often seen in familiar buildings.

  It is necessary to look at the functional aspects such as humidity control inherent in plaster in a living environment where the transition of the seasons is clear like Japan and the difference in temperature and temperature changes periodically. I thought. At present, when airtight fittings such as aluminum sashes have become widespread, the entrance and exit of indoor and outdoor air has been shut out, and the humidity control action based on natural ventilation has been lost accordingly. As a result, moisture was easily accumulated in the house, and mold and the like were generated.

  In such a case, if the wall surface is a plaster wall surface having a humidity control function and a mold prevention property, it is possible to prevent moisture and mold and prevent health damage such as allergic diseases caused by mold and the like. I thought it was a spear.

  Stucco is a substance that inherently has fire resistance. Since ancient times, plaster has been used for wall painting such as storehouses, and it is well known that its fire resistance is excellent. Japanese buildings are inferior to concrete buildings, etc., because they use a lot of wood basically from the viewpoint of fire resistance. Under such circumstances, the present inventor considered that plaster is a building material that may be reviewed from the viewpoint of imparting fire resistance to a building.

Concrete buildings are certainly superior in terms of fire resistance, but the exposed walls are so cold that there are some scenes that seem to be unsuitable for the living environment.
The gentle walls that match the Japanese climate created by plaster have a taste that is not suitable for concrete walls.

  Further, even if the concrete wall surface is subjected to finishing such as cross bonding, mold is likely to be generated at the bonding portion of the cross surface or the back surface due to moisture. This point is well known in the example of a reinforced concrete apartment. Furthermore, it is also said that a synthetic adhesive for attaching a cloth to a concrete wall causes allergic diseases.

  Thus, concrete structures do not have functional aspects such as humidity control and antifungal properties inherent to plaster. By using plaster, there is no need for finishing with a cloth, and it is possible to eliminate the health hazards associated with the synthetic adhesive used for cloth application.

  Therefore, the present inventor considered that it is necessary to develop a technology that can save the labor of on-site application while taking advantage of the characteristics such as the humidity control function inherent in plaster. By simplifying the construction, the plaster can be provided as a building material at a lower price than before while maintaining the excellent characteristics inherent in the plaster.

  If the spread of plaster as a building material could be promoted in this way, it was thought that health damage due to sick building syndrome or the like peculiar to new building materials could be prevented. At the same time, we thought it would be useful for imparting fire resistance to buildings.

  About the cause that the unit price of the present plaster construction becomes high, the point which performs on-site construction as mentioned above is mentioned first. Therefore, in order to reduce the unit cost of the plaster construction, it is necessary to improve the construction by eliminating such on-site construction. There are several methods for eliminating on-site construction. Among these techniques, a method of applying stucco to a board that can be attached to a construction site by factory production is most preferable. If it can be provided as a plaster board, the plaster board may be attached at the time of construction, and a plaster wall surface of a building can be completed by simple construction.

  However, regarding plaster, a technology for applying plaster to a board in advance and providing it as a plaster board has not yet been proposed. With regard to the original plaster with poor paintability, which contains a large amount of slaked lime as a main component, the technology relating to application to the board surface has not been sufficiently developed in advance.

  On the other hand, unlike an original plaster, a stucco paint that seeks to improve paintability by suppressing slaked lime to a small amount can be easily applied to a wall surface by a roller. Therefore, from the viewpoint of the labor of construction, the necessity to apply at least to the board in advance and provide it as a stucco paint board is not felt so much.

  In the plaster-based paint, as described above, the slaked lime is reduced to a small amount so that it can be easily applied, but conversely, this is also the reason that the characteristics of the original plaster cannot be fully exhibited. Yes. As described above, the plaster-based paint and the plaster are so similar that their names are misleading, but their properties, functions, and the like are not similar.

  Moreover, in the stucco-based paint, the content of slaked lime is suppressed as described above for the purpose of improving the wettability and facilitating the application, but a relatively large amount of the organic synthetic material is contained accordingly. However, inclusion of such a large amount of organic synthetic material leads to loss of the breathing function on the wall surface inherent to the plaster, and loss of its humidity control action and the like. Or even if it is not lost, its function cannot be fully exerted. Furthermore, in terms of fire resistance, there remains a concern as to how the large amount of organic synthetic material contained therein will behave in the event of a fire.

  In this way, unlike the original plaster, the plaster-based paint has good paintability and does not feel the necessity to apply to the board surface in advance, but plaster is poor in paintability. The present inventor considered that construction on site was a bottleneck, and it was necessary to apply it to the board surface in advance.

  Regarding plaster, the paintability was extremely poor as described above, and in the experiments of the present inventors, the technology of the plaster-based paint on the board could not be transferred as it was. That is, in the application of the stucco paint to the board, the stucco cannot be used instead of the stucco paint. Regarding the application of plaster to the board surface, we thought that it was necessary to develop a new technology separately.

  An object of the present invention is to make it possible to use plaster without on-site application.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  The inventor tried various combinations of plaster and board while studying the above problems. As a result, as a material that can satisfy the usability as a building material, for example, application to a gypsum board is conceivable. However, it is too heavy as a building material, and the applicable places are limited. It is only necessary to apply plaster in advance to a lightweight board material. If it does so, it should be able to be sufficiently used also in places where lightness is required such as a ceiling.

  During various trials, it was found that a fiber board as an organic synthetic material is preferable in terms of weight reduction. However, such a fiber-based board as an organic synthetic material is not familiar with plaster. During further investigation, it was found that the problem of familiarity with plaster can be eliminated by making the surface alkaline.

  That is, at the present time, it has been found that a fiber-based board is preferable as a board on which plaster is applied, and that the application surface of the fiber-based board needs to be alkaline. It is only necessary to limit the base material on which the plaster is applied to a fiber-based board, and to limit the application surface to an alkaline property familiar to the plaster. By this method, plaster can be applied in advance to a board that can be attached to a construction site.

  Moreover, in a fiber-type board, the board of an organic synthetic fiber is preferable. This is because inorganic fiber systems such as asbestos are concerned about health hazards, and it is not suitable for use in a home where consumers can live with peace of mind. Considering workability and portability to the site, the light weight is particularly important as described above, but the organic synthetic fiber board is also excellent in terms of the light weight.

  The plaster board according to the present invention is a plaster for building materials in which plaster is applied to a fiber-based board as a flame-retardant organic synthetic material that can be attached to a construction site before the installation to the construction site. It is a board. In such a configuration, the provision of flame retardancy to the fiber board is performed by subjecting the fiber board to flame retardancy. Moreover, the plaster board for building materials of the present invention is coated with plaster on the surface of a fiber-based board as an organic synthetic material having an alkaline coating surface that can be attached to a construction site before being attached to the construction site. It can be said that it is characterized by this. In such a configuration, the imparting of alkalinity to the coated surface is performed by flame-treating the fiber board. The flame retardant treatment can be treated with a sodium silicate solution.

  In any one of the configurations described above, the plaster has a chemical substance release rate equal to or lower than a criterion value according to a chemical substance emission voluntary certification system established by the Japan Plaster Association. In any one of the configurations described above, the plaster includes slaked lime in a range of 60 wt% or more and less than 80 wt%. Alternatively, the plaster is characterized in that slaked lime is contained in a range of 30 wt% or more and less than 90 wt%.

  In any one of the configurations described above, the fiber-based board is characterized in that fibers are oriented in a crossing direction with respect to the application direction of the plaster. In any one of the configurations described above, the fiber board is a polyester fiber board. In any one of the configurations described above, the fiber-based board is made of ENFEP (ENFEP (registered trademark) Sonic) manufactured by ENCEP. In any one of the configurations described above, the plaster is Karnuovo (registered trademark) manufactured by Nippon Plaster Co., Ltd.

  In addition, the present invention is also grasped as a method for producing a plaster board for building materials, the plaster board for building materials is a plaster board for building materials having any one of the above configurations, and the application of the plaster to the fiber board is as follows. It is a manufacturing method of the plaster board for building materials characterized by performing with a coating device. In this configuration, the plaster is applied to the fiber board directly on the fiber board. In any one of the configurations described above, the direct application of the plaster to the fiber board is performed such that the direction in which the plaster is sprayed by the coating apparatus faces the fiber orientation direction of the fiber board. It is characterized by.

  This invention is grasped | ascertained also as the building using the plaster board for building materials, The plaster board for building materials of the said structure is used for the said plaster board for building materials, It is characterized by the above-mentioned. Or the said plaster board for building materials is manufactured by the manufacturing method of the plaster board for building materials of the said either structure, It is characterized by the above-mentioned.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  In the present invention, since plaster is preliminarily applied to the fiber-based board, it is possible to save the trouble of application at the construction site.

  In the present invention, since plaster can be applied to the fiber-based board in advance at a factory or the like, quality control relating to plaster finish or the like can be sufficiently performed as compared with the case where application is performed at a construction site or the like.

  Since the board used in the present invention is a fiber-based board as an organic synthetic material, it is lightweight and excellent in its workability, and unlike the case of inorganic fiber-based materials such as asbestos, worries about consumer health hazards Can do.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof may be omitted.

  In the present invention, plaster is applied to a fiber board as an organic synthetic material. By installing a plaster board prepared in advance without applying it at the site where the plaster is to be constructed, it is possible to construct a plaster wall surface easily. Prior to installation, for example, in a factory or the like, plaster is applied to the surface of the fiber-based board in advance to give a plaster finish.

  As described above, the plaster described in the present application is different from the plaster-based paint, and in the present application, the plaster and the plaster-based paint are distinguished as follows. However, the boundary between the plaster and the plaster-based paint has not been clear so far, and there have been various interpretations in the industry and the like. Therefore, in the present invention, the range from which the characteristics of the stucco can be enjoyed in the most preferable state to the range where the characteristics of the stucco can be ensured to the minimum is divided into a plurality of ranges to distinguish between the stucco and the stucco-based paint.

  In the most preferred embodiment, the plaster refers to one containing at least 60% by weight and less than 80% by weight of slaked lime (calcium hydroxide).

  However, regarding the amount of slaked lime contained in the stucco, the lower limit of the content can be lowered to at least 40% by weight or 30% by weight or more to distinguish it from the stucco-based paint. However, characteristics such as humidity control of stucco fall as the content of slaked lime decreases, and there is a possibility that the amount of organic synthetic material mixed in will increase, so at least 30% by weight is necessary and enjoys the characteristics of stucco. I regarded it as the minimum possible. More preferably, it may be at least 40% by weight. If it is 40% by weight or more, it can be said that the quality is relatively stable in terms of the content of the organic synthetic material, the characteristics of the stucco, and the like.

  Further, the upper limit of the slaked lime content is most preferably less than 80% by weight as described above. However, unless the wettability is further deteriorated, the upper limit is less than 90% by weight. May be separated.

  Thus, plaster containing slaked lime with a lower limit of 30% by weight or more, or 40% by weight or more, or 60% by weight or more, and an upper limit of less than 90% by weight or less than 80% by weight is generally about 15 to It is compositionally different from conventional plaster paints containing only about 20% by weight slaked lime.

In addition, plaster can be distinguished from plaster-based paints from the aspect of humidity control (moisture absorption and desorption). For example, in plaster, it can also have a humidity control property of 60 g / m ² or more.

  Furthermore, plaster can not deny the possibility that an organic synthetic material is included for each purpose on the plaster construction due to its material composition, but even if such an organic synthetic material is included, It shall be contained within the guideline value for the indoor concentration of chemical substances established by the Ministry of Health, Labor and Welfare. Other than this shall belong to the plaster paint.

  In addition, regarding the emission of formaldehyde, the plaster shall satisfy the emission rate of F ☆☆☆☆ or less described in the Building Standards Act revised in July 2003, and the others shall belong to the plaster paint.

  More preferably, the certification standard shown in the voluntary certification system for chemical substances certified by the Japan Plaster Association shall be satisfied. Sick house syndrome caused by VVOC gas, VOC gas, etc. generated from organic substances contained in building materials that are currently a problem even if they are used as building materials as long as they meet the certification standards shown in the voluntary certification system for chemical substances Can prevent health damage.

  In addition, as a thing satisfying the certification standard shown in such chemical substance emission voluntary certification system, the certification standard acceptable product is included, but it is not always necessary to be a certified product in the certification system. For example, even if it is not an acceptable product, it may be grasped including those that will pass by satisfying the judgment criteria by using the certification system.

As described above, the most preferable composition of mortar is that the slaked lime as a main component contains at least 60% by weight and less than 80% by weight, and the slaked lime content is less than 60% by weight. It shall be included in the paint. Moreover, what contains 80 weight% or more of slaked lime is distinguished as a thing different from plaster. Those containing slaked lime with a humidity control of less than 60 g / m ² are naturally treated as being different from plaster, and are included in the plaster paint for convenience in this specification and not in plaster.

  Of course, the lower limit of the content of slaked lime is 30% by weight or more, or 40% by weight or more, and the upper limit is less than 90% by weight, considering that the properties such as humidity control of the plaster are lowered and the paintability is deteriorated. When setting, what contains less than 30 weight% or less than 40 weight% of slaked lime, or what contains 90 weight% or more of slaked lime may be distinguished from stucco.

  By the way, what does not contain slaked lime at all from the beginning, and what contains calcium carbonate is called “stucco-like” or “stucco-like”, and such things do not contain slaked lime, so stucco and stucco Distinguish it from a completely different type of paint.

  Stucco has traditionally consisted of slaked lime as a main component (for example, 60% by weight or more and less than 80% by weight), seaweed paste for imparting bondability after drying, such as keratin coating, and the like. It is composed of a fall prevention and crack prevention material called soot. In addition, oils or dragonflies may be added and used.

  Further, recent plaster includes, for example, an auxiliary agent or the like that, for example, adds a very small amount of a synthetic material such as a resin to promote its solidification. Even in such a case, slaked lime that is included in the above-mentioned definition of various plasters, such as 60% by weight or more and less than 80% by weight, may be handled as plaster.

  On the other hand, the plaster-based paint is less than 60% by weight, or less than 40% by weight, or less than 30% by weight, generally 15 to 20% by weight of slaked lime, instead of seaweed paste, Alternatively, by using a binder of an organic synthetic material together with seaweed paste or the like, the paintability, adhesiveness, etc. are improved, and the workability is improved. Workability, drying, etc. are certainly better than plaster, but by using the organic synthetic material, the so-called wall respiration properties such as humidity control and fire resistance inherent in plaster are lost. Yes. In addition, depending on the type of organic synthetic material contained, the content of the organic synthetic material, etc., there are concerns about the health hazard of sick house syndrome.

  Therefore, as described above, in the present application, the use of the plaster-based paint is completely excluded, and the one having the property called plaster as defined above is used. As described above, such a plaster is different from the plaster-based paint and has the characteristics inherent to the plaster without concern about the health hazard of sick house syndrome.

More preferably, the emission rate (μg / m ² h) of the following chemical substances into the room is below the specified value below the certification standard by the chemical substance emission voluntary certification system certified by the Japan Plaster Association. Is. That is, it satisfies the criteria of formaldehyde 5 or less, acetaldehyde 15 or less, toluene 13 or less, xylene 43 or less, ethylbenzene 190 or less, styrene 11 or less, paradichlorobenzene 12 or less, and tetradecane 16 or less. It is preferable if it satisfies such certification criteria.

  Examples of such plaster include Karnuovo (registered trademark) manufactured by Nippon Plaster Co., Ltd. Of course, Karnuovo is a plaster that has passed the above certification criteria. In the embodiment described below of the present invention, the case where such a Karnuovo is used is exemplified. Of course, it goes without saying that anything other than Carnouveau can be used as long as it is in the category of plaster and has the original characteristics as plaster.

  In the present invention, a fiber-based board is selected as the board on which the plaster is applied. Boards used as building materials to which diatomaceous earth and the like have been applied so far include wooden boards, gypsum boards, etc., but in the present invention, they are lightweight and easy to install, easy to install during construction, Because of its ease of use, a fiber-based board as an organic synthetic material was used.

  Among these fiber boards, as mentioned above, inorganic fiber boards include asbestos fiber boards that have caused a great deal of health damage, so we decided to choose fiber boards as organic synthetic materials. And completely dispelled any concerns about this point. Considering the actual construction time, it is much lighter than wood-based and gypsum-based materials, and is easy to carry in and on-site.

  Here, the fiber-based board 10 as the organic synthetic material is a plate-like member that can obtain desired hardness by regulating the fibers to a predetermined density, as shown in FIG. In such a fiber-based board 10, it is preferable that the fibers are oriented in the crossing direction with respect to the plaster coating surface. The state in which the fibers are oriented in the cross direction means that the orientation directions of all the fibers are not necessarily aligned in the same direction, such as being raised obliquely or vertically. .

  The fibers 11 oriented in the intersecting direction may be provided at least on the application surface side on which the plaster is applied, that is, on the board surface S side, and the inner surface of the fiber board 10 is not necessarily configured as such. It is not necessary to be. FIG. 1B schematically shows the state as a partially enlarged view.

  Of course, for example, the orientation direction of the fiber 11 is schematically shown in a partially enlarged view of FIG. 1C with respect to the part surrounded by the circle of FIG. For example, a configuration in which they are aligned substantially vertically may be used. That is, what is necessary is just to be comprised so that it may orientate in crossing directions, such as perpendicular | vertical, with respect to the application direction of a stucco. In this case, the fibers 11 are aligned in the thickness direction through the inner surface side of the fiber board 10, and the orientation direction is aligned with the direction intersecting the application surface. It should be noted that the orientation of the fibers 11 does not have to be a problem on the side where the plaster application is not performed.

  Alternatively, although the plaster paintability is inferior, the orientation direction of the fibers 11 may be aligned substantially parallel to the board surface S as schematically shown in FIG. Furthermore, when configuring in parallel, the fibers 11 may be laminated so that a plurality of layers intersect by changing the phase of the fibers 11 by, for example, 90 degrees. The fiber length may be equal to the length of the board surface S or may be configured to be shorter than that.

  The material of the fiber 11 may be any material as long as the necessary hardness as a building material can be obtained at a predetermined density. For example, use of polyester fiber, nylon fiber of polyamide fiber, polypropylene fiber of polyolefin fiber, etc. can be considered.

  By the way, if it is not limited only to the use as a building material, for example, as the fiber, polyurethane fiber, polyurea fiber, polyolefin fiber, polystyrene fiber, polyvinyl chloride fiber, polyvinylidene chloride fiber, polyvinyl fluoride It can also be suitably used for fibers such as ethylene fibers, polyacrylonitrile fibers, polyvinyl alcohol fibers, polycyanidene chloride fibers, cellulosic fibers, carbon fibers, and wool fibers.

  The fiber board 10 is treated so that at least the board surface is alkaline so that the familiarity with the plaster becomes good. What is necessary is just to spray an alkali treatment solution on the board surface, or to immerse the board itself in an alkali treatment solution. Alternatively, the fiber 11 itself constituting the fiber board 10 may be treated with an alkali treatment solution so that the fiber surface is covered with an alkaline coating.

  The alkalinity of the surface preferably has a pH of 10 or more and 13 or less in the state after being treated with the alkali treatment solution.

  Furthermore, it is more preferable that the alkali treatment solution has not only for imparting alkalinity but also other functions. For example, since the present invention has a purpose of use as a building material, an alkaline flame retardant treatment solution was used so that fire resistance, flame retardancy, and the like can be imparted by the alkali treatment.

  For example, a sodium silicate suspension can be used as the alkali treatment solution. While imparting alkalinity to the surface, it is possible to impart flame retardancy to a board composed of polyester fibers of the fiber-based board 10.

(Embodiment 1)
In the first embodiment, a plaster board for building materials according to the present invention will be described. As for the plaster board A for building materials of this invention, the plaster 20 is apply | coated to the surface of the fiber-type board 10, as shown in FIG. In the case shown in FIG. 2, the case where it is applied to one side of the fiber board 10 is shown. As such plaster 20, for example, Carnouveau 20a manufactured by Nippon Plaster Co., Ltd. can be used.

  The Karnuovo 20a has a powder composition and includes 60% by weight or more and less than 80% by weight of slaked lime and 40% by weight or less of calcium carbonate or the like, and is configured to be 100% by weight as a whole. Further, by containing a small amount of resin when mixed with water, obstructions such as cracks in the case of using a traditional plaster seaweed paste or the like are prevented beforehand.

  Incidentally, in the case of the Carnouveau 20a, the moisture conditioning property thereof is 4 times as high as that of PVC cloth and 12 times as high as that of the PVC cloth. With regard to chemical substance absorptivity, for example, in the case of formaldehyde, a high concentration of 16 ppm formaldehyde that cannot be inhabited by humans can be adsorbed in 3 hours, and the domestic safety standard can be 0.08 ppm or less. Since such adsorption is chemical adsorption, there is no fear of health damage due to stable adsorption and re-release. Moreover, it is also excellent in terms of mold prevention, and in the mold prevention test based on JIS Z 2911, no mold is observed even after culturing at 28 ° C. for 7 days.

  In applying the plaster 20, double-sided application may be performed as shown in FIG. In addition, in the single-sided application shown in FIG. 2, as shown in FIG. Furthermore, in this plaster 20, you may comprise so that the whole surface of the fiber-type board 10 may be covered with the plaster 20 as shown in FIG.3 (c).

  For example, EnFEP (registered trademark) Sonic 10a, which is a polyester fiber board provided with flame retardancy, is used for the fiber board 10. For example, the ENFLISONIC 10a orients the fibers in the lateral direction along the board surface S, and performs a number of punches from the direction intersecting the fiber direction in that state, for example, the direction perpendicular to the board surface S. Then, it was manufactured by compression or the like. In the ENFLISONIC 10a of the fiber-based board 10 produced in this way, the orientation of the fibers is disordered by punching on the inner side, but on the board surface S side, short fibers are formed almost in the crossing direction on the plate surface. ing. That is, it is oriented in the crossing direction with respect to the direction of plaster application.

  The Enfrisonic 10a is a product obtained by flame-treating a polyester board and has excellent flame retardancy. The flame retardancy is treated with, for example, a 55 wt% to 75 wt% solution of sodium silicate. Such treatment is performed, for example, by immersing the polyester fiber in a sodium silicate solution or spraying the polyester fiber.

  Incidentally, the flame retardancy is, for example, a product that has passed the flame retardancy class 2 performance test (Korean Disaster Prevention Research Institute) according to KSF2271 in Enfliconic 10a.

  Such a solution treatment of sodium silicate has a role of imparting flame retardancy as described above, but also has a role of an alkali treatment solution for imparting alkalinity to the plaster coating surface of Enfrisonic 10a. is doing. The pH of the board surface is 10 or more and 13 or less, and the familiarity with the car nouveau 20a that is the plaster 20 is improved, and the effect of improving the adhesion between the car nouveau 20a and the enfrisonic 10a that is the fiber board 10 is also carried. Yes.

  Furthermore, the effect of hardening the emfriconic 10a by treating the enfliconic 10a, which is the fiber board 10, with a sodium silicate solution is also obtained. Although the predetermined hardness of the board can be obtained by setting to a predetermined fiber density, the surface can also be cured by drying after an alkaline flame-retardant treatment with a sodium silicate solution.

  In such a fiber-based board 10, the fiber density and the surface treatment with sodium silicate have a predetermined hardness, but the basic structure is a structure in which fibers of a predetermined density are assembled, so that a certain degree of impact mitigation is achieved. It has sex. Such impact relaxation properties are considered to be effective in preventing cracking of the plaster applied to the board surface.

  Carnouveau 20a, which is plaster 20, is applied to the surface of Enfrisonic 10a, which is such a fiber board 10, with a layer thickness of 2 mm, for example. At the time of application, it may be applied once or may be applied two or more times.

  If the layer thickness is 0.5 mm or more and 5 mm or less, sufficient application is possible. In the case of less than 0.5 mm, it is assumed that the effect of applying the stucco is not sufficiently exhibited because it is too thin. On the other hand, when the thickness exceeds 5 mm, the layer thickness is too thick, and it may take time to dry the plaster 20. More preferably, it is 2 mm or more and 3 mm or less. If the layer thickness is 5 mm or less, at least cracking does not occur.

  Moreover, what is necessary is just to apply | coat mechanically on the surface of the fiber-type board 10 using a coating device in the factory in the case of application | coating of the plaster 20 shown in this FIG. However, depending on the case, when a trace, a brush trace, etc. are caught as a surface pattern, a plaster coating, a brush coating, etc. may be performed by hand when applying the plaster board A for building materials.

  When applying the plaster 20, since the adhesiveness between the application surface of the ENFLISONIC 10 a that is the fiber board 10 and the CARNUVO 20 a that is the plaster 20 is good, the surface of the ENFLISONIC 10 a is made of a base material or the like. No undercoat is required. That is, the carnouveau 20a of the plaster 20 may be applied directly to the surface of the enflicsonic 10a of the fiber board 10 as shown in FIG. Thus, since the undercoating of the base material can be eliminated, the working efficiency is extremely good. Of course, it does not matter if the base coat is applied.

  In addition, when applying the plaster 20 such as the Carnouveau 20a to the surface of the fiber board 10, if the plaster 20 is applied on one side as shown in FIG. 2, there is a fear of warping after drying. Such warpage can be dealt with by applying a back surface treatment such as forming a coating film on the back surface. Depending on the usage status of the building material plaster board A, it may occur that it is better to apply the plaster 20 as well as the front and back, but in such a case, there is no need to worry about warping.

Furthermore, for example, if the fiber density of the fiber-based board 10 is 300 kg / m ³ or more and the thickness is 9 mm or more, there is no fear of warping in stucco coating even with single-side coating.

  Further, in the present invention, Enfrisonic 10a has been adopted by paying attention to good familiarity with paintability with plaster, light weight when used as a building material, etc., but glass wool or urethane home is used for Enfrisonic 10a. It also has environmental characteristics that are not available. From the perspective of reuse, Enfrisonic 10a is reusable and environmentally friendly, but glass wool and urethane homes are difficult to reuse and incinerate and are inferior to Enfrisonic 10a in terms of the environment. .

(Embodiment 2)
This Embodiment demonstrates the case where the plaster board 20 for building materials is manufactured by apply | coating the plaster 20 on the surface of the fiber board 10 using a coating device. The construction procedure is shown in the flowchart of FIG. The schematic configuration of the coating apparatus used is shown in FIG.

  As shown in FIG. 4, the fiber board 10 is prepared in step S100. For example, a fiber board 10 is prepared in which polyester short fibers are oriented in the crossing direction with respect to the application direction of the plaster 20. As such a fiber-based board 10, for example, an enfrisonic 10a formed in a rectangular flat plate shape may be used.

  In step S200, the plaster 20 is prepared. For example, Karnuovo 20a may be used as the plaster 20. In Karnuovo 20a, powder mixed with 60% by weight or more and less than 80% by weight of slaked lime is mixed and added as appropriate in the range of 55 parts by weight or more and 100 parts by weight or less of water with respect to the solid content. To do. Of course, such mixing may be performed manually, but in reality, it may be mechanically mixed with a mixer or the like. Mix carefully to avoid foaming. The mixed state may be mixed and prepared so as to be machine-applied differently from the case where it is used for the glazing.

  In step S300, the carnouveau 20a that is the plaster 20 is applied to the surface of the enfliconic 10a that is the fiber board 10. The application is performed on one side, for example.

  The application may be performed using, for example, the application apparatus 30 configured in the flow coater 30a. FIG. 5 schematically shows the coating apparatus 30 configured in the flow coater 30a. The slurry-like plaster 20 prepared in step S <b> 200 is put into the coating liquid supply tank 31 of the coating device 30. The plaster 20 placed in the coating liquid supply tank 31 is jetted from the shower head 32a of the coating nozzle 32 in a curtain shape with a predetermined width.

  The blowing direction of the shower head 32 a is directed to the application surface of the fiber board 10. Although not shown in the drawing surface of the fiber-based board 10, the fibers 11 are oriented in a crossing direction with respect to the coating direction so that the blowing direction of the stucco 20 of the shower head 32 a faces the orientation direction of the fibers 11. Is directed. Therefore, the plaster 20 sprayed from the shower head 32 a enters the fibers 11 on the application surface of the fiber board 10 and is sprayed so as to be entangled. Compared with the case where the degree of the entanglement of the plaster 20 with the fiber surface side is small, the adhesiveness with the plaster 20 can be enhanced in combination with the balance of surface alkalinity.

  The fiber-based board 10 is maintained in a state in which the shower head 32a is opposed to the orientation direction of the fibers 11 and the posture is maintained so that the entangled state between the sprayed plaster 20 and the fibers 11 of the fiber-based board 10 can be maintained. Is translated on the conveyor 33 with respect to the shower head 32a. By adjusting the moving speed, the coating thickness is adjusted, and the stucco 20 is uniformly coated. Compared to the case where the application operation is manual operation, since the application is performed by the apparatus, quality control of the application state is easy to perform.

  In this way, it is possible to directly apply the Carnouveau 20a, which is the plaster 20, without applying a base coat to the surface of the Enfrisonic 10a, which is the fiber board 10. The effect of the application state related to the entanglement with the fiber 11 is exhibited in the case of direct application to the fiber board 10. Therefore, it is preferable to apply the plaster 20 directly on the surface of the fiber-based board 10 by the coating device 30. Such effects cannot be expected in the second and subsequent plaster coatings in the case of multiple coatings.

  However, the length of the foot of the fiber 11 on the surface of the fiber-based board 10 is increased in accordance with the multiple times of plaster coating, so that the fibers 11 and the plaster 20 are entangled even in the case of multiple times of coating. It may be possible to ensure.

  In step S400, the plaster 20 applied to the fiber board 10 is dried. When drying, the coated fiberboard 10 may be naturally dried, but in reality, for example, it is dried at a temperature of 100 ° C. or higher and 140 ° C. or lower, for example, with hot air at such a temperature. Just do it.

  In the state where the heat after drying is reduced, the plaster 20 is applied again if necessary. In order to cool the heat after drying, for example, a heat removal device such as blowing air may be used.

  Furthermore, when applying several times, after drying application of step S300 of the 1st time in said step S400, application | coating of the 2nd stucco 20 in step S500, drying of the 2nd stucco 20 in step S600 Can be done. The necessary number of times, steps S500 and S600 are repeated, and the required number of times of coating may be applied.

  For example, in the case of two coatings, the coating device 30 performs the first coating of the plaster 20 with a coating thickness of 1 mm and the second coating with a coating layer thickness of 1 mm. In this way, a plaster board A for building material having a total coating layer thickness of 2 mm can be produced.

  In the present embodiment, for example, the case where the coating is performed in two portions has been described, but such coating may be performed once or may be performed three or more times.

  Further, if necessary, in multiple coating, the adjustment of fluidity such as the viscosity of the Karnouveau 20a may be changed for each number of times. In particular, since the state of the application surface of the Karnouveau 20a differs between the first coating and the second coating or later, such application may be advantageous. In other words, the first coating (one-time coating) is a coating on the surface of the fiber-based board, and the second and subsequent coatings are repeated coatings to the Karnuvo 20a applied in the first (one-time). Is different.

  Therefore, for example, the first time (one-time coating) is applied with a low-viscosity stucco such that the unevenness of the surface of the fiber-based board 10 is minimally hidden, and becomes a predetermined thickness in the second and subsequent coatings. Thus, thick coating may be applied from the first application with high-viscosity plaster.

  At the time of application, mechanical application may be performed to the predetermined shape of, for example, the rectangular fiber-based board 10 using the application device 30 one by one. Or you may manufacture the plaster board A for building materials of predetermined shape by performing stucco application | coating on the board surface of the large shape from which the fiber-type board 10 of predetermined shapes, such as a rectangular shape, can be taken. In such a case, if the plaster 20 is not applied to the portion corresponding to the cutting line, it is easier to cut.

  Moreover, you may perform two boards by the immersion method which makes the application | coating surface of the stucco 20 face outside, makes it back-to-back, and is immersed in the liquid or slurry-like stucco 20 in the state. In such a case, the viscosity of the plaster 20 may be lowered so that the plaster 20 flows on the board surface. In such a case, a predetermined layer thickness of the plaster 20 may be ensured by increasing the number of times the plaster 20 is applied.

  Alternatively, the dipping method may be used in combination with the coating apparatus 30 such as the flow coater 30a. Either the first coating or the second and subsequent coatings may be performed by the dipping method, and the other may be applied by the flow coater 30a.

  In addition, in the said description, although it was set as the structure which moves the fiber-type board 10 under the curtain of the stucco 20 injected from the shower head 32a in parallel, depending on the case, the shower head 32a is applied in the application direction, spraying the stucco 20. However, it may be translated. Or you may make it aim at the improvement of application | coating efficiency by translating both the fiber-type board 10 and the shower head 32a in the mutually opposing direction. In particular, this method is preferable when the orientation direction of the fibers 11 is not the direction perpendicular to the coating surface but the lying direction.

  Moreover, although the case where the coating apparatus 30 was comprised in the flow coater 30a was shown in the said description, even if comprised in a roll coater, a curtain coater, etc., it does not matter at all.

(Embodiment 3)
This Embodiment demonstrates the structure about the building using the plaster board for building materials demonstrated in the said Embodiment 1. FIG.

  The building material stucco board A described above can be used, for example, to form an indoor wall surface. When using it for the wall surface in a room, it should just carry in to the spot and attach to a construction location. At the time of attachment, an air tucker or the like may be used to stop with an appropriate stable. Alternatively, an adhesive may be used. Furthermore, you may utilize splicing styles, such as an eye jacquard splicing and a sap splicing. Depending on the case, it may be possible to configure the mounting cost for the nail or screwing in advance on the plaster board A for building material and attach it to the mounting substrate surface with such mounting cost.

From the viewpoint of ease of use, the building material plaster board A used for the wall surface has a thickness of, for example, a thickness of 4 mm or more and 50 mm or less, a density of 100 kg / m ³ or more and 500 kg / m ³ or less, and a width of 2000 mm or less. The vertical width may be 3000 mm or less. More preferably, for example, the thickness is 7 mm or more and 15 mm or less, the density is 200 kg / m ³ or more and 350 kg / m ³ , the horizontal width is 1000 mm or less, and the vertical width is 2000 mm or less.

  As described above, the attachment may be performed by various attachment methods using an air tucker or the like. Or you may make it clean up the joint part of the plaster board A for building materials by previously forming the attachment frame and providing the plaster board A for building materials in this frame.

  For example, when the building material plaster board A having such a configuration is used on an inner wall surface of a room, it can be used on a wall surface of a living room such as a living room or a bedroom, a wall surface around water such as a kitchen or a washroom. Furthermore, it can also be used on the walls of stairs used up and down the upper floor.

  Moreover, since the plaster board A for building materials of this invention is lightweight, it can be used also for a ceiling. When attaching to the ceiling, it can be attached in the same manner as when attaching to the wall surface.

When used for the ceiling, the building material plaster board A has a thickness of 4 mm to 50 mm, a density of 100 kg / m ³ or more and 500 kg / m ³ or less, and a width of the board from the viewpoint of ease of use. What is necessary is just 2000 mm or less and a vertical width of 3000 mm or less. More preferably, the thickness is 9 mm or more and 12 mm or less, the density is 200 kg / m ³ or more and 350 kg / m ³ , the horizontal width is 1000 mm or less, and the vertical width is 1000 mm or less.

  Incidentally, the plaster board of the present invention can be used also on the outer wall surface. When used as an outer wall surface, it is only necessary to provide weather resistance by, for example, mixing oil into the plaster 20 coated on the fiber board 10.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  INDUSTRIAL APPLICABILITY The present invention eliminates the on-site application of plaster used for the wall surface of a building, and can be effectively used in the field of construction methods for plaster.

(A) is a side view which shows the structure of a fiber-type board, (b), (c), (d) is sectional explanatory drawing which shows the fiber direction of a fiber-type board partially typically. It is a perspective view which shows typically the plaster board for building materials which concerns on this invention. (A) is sectional drawing which shows typically the modification of the plaster board for building materials, (b), (c) is a partial perspective view which shows the modification of the plaster board for building materials typically. It is a flowchart which shows the manufacturing process of the plaster board for building materials of this invention. It is explanatory drawing which shows typically schematic structure of the plaster coating device used by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fiber board 10a Enfrisonic 11 Fiber 20 Stucco 20a Carnouveau 30 Coating device 30a Flow coater 31 Coating liquid supply tank 32 Coating nozzle 32a Shower head A Building material plaster board S Board surface

Claims (7)

It is characterized in that plaster is applied to the fiber board as a flame-retardant organic synthetic material that can be attached to the construction site by flame-treating the polyester fiber board before installation to the construction site. A stucco board for building materials. In the plaster board for building materials according to claim 1 ,
The fiber-based board is a plaster board for building materials characterized by using a fiber-based board represented by Enfreex (ENFEP (registered trademark) Sonic) manufactured by ENCEP. In the building material plaster board according to claim 1 or 2 ,
The plaster board for building materials characterized in that the plaster has a chemical substance emission rate equal to or lower than a judgment standard value by a chemical substance emission voluntary certification system established by the Japan Plaster Association. In the plaster board for building materials of any one of Claims 1-3 ,
The plaster board for building materials, wherein the plaster is a plaster shown by Karnuovo (registered trademark) manufactured by Nippon Plaster. In the manufacturing method of the stucco board for building materials given in any 1 paragraph of Claims 1-4 ,
The method for producing a plaster board for building materials, wherein the application of the plaster to the fiber board is performed directly on the fiber board. In buildings using plaster boards for building materials,
The building material using the building material plaster board, wherein the building material plaster board according to any one of claims 1 to 4 is used. In buildings using plaster boards for building materials,
The building using the building material plaster board, wherein the building material plaster board is manufactured by the method for manufacturing a building material plaster board according to claim 5 .

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