JP2008208711A - Plaster board coating material and building interior wall finish using the same - Google Patents
Plaster board coating material and building interior wall finish using the same Download PDFInfo
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- JP2008208711A JP2008208711A JP2008093733A JP2008093733A JP2008208711A JP 2008208711 A JP2008208711 A JP 2008208711A JP 2008093733 A JP2008093733 A JP 2008093733A JP 2008093733 A JP2008093733 A JP 2008093733A JP 2008208711 A JP2008208711 A JP 2008208711A
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- gypsum board
- gypsum
- shirasu
- coating
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- 239000000463 material Substances 0.000 title claims abstract description 94
- 239000011248 coating agent Substances 0.000 title claims abstract description 85
- 238000000576 coating method Methods 0.000 title claims abstract description 85
- 239000011505 plaster Substances 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 229920002472 Starch Polymers 0.000 claims abstract description 10
- 229910052602 gypsum Inorganic materials 0.000 claims description 81
- 239000010440 gypsum Substances 0.000 claims description 81
- 239000011247 coating layer Substances 0.000 claims description 14
- 239000004034 viscosity adjusting agent Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 3
- 229920003086 cellulose ether Polymers 0.000 claims description 3
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 3
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 3
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 239000004576 sand Substances 0.000 abstract description 3
- 238000011282 treatment Methods 0.000 description 12
- 239000010410 layer Substances 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000012855 volatile organic compound Substances 0.000 description 5
- 230000008602 contraction Effects 0.000 description 3
- 239000011507 gypsum plaster Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- -1 one Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 241001502129 Mullus Species 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 208000008842 sick building syndrome Diseases 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002335 surface treatment layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000005335 volcanic glass Substances 0.000 description 1
Landscapes
- Finishing Walls (AREA)
Abstract
Description
本発明は、建築物の壁や天井等の内装壁の下地として広く用いられている石膏ボードの表面仕上げや石膏ボード間の目地処理に好適な石膏ボード用塗材およびこれを用いた建築物の内装壁に関する。 The present invention relates to a plaster board coating material suitable for surface finishing of gypsum board and a joint treatment between gypsum boards widely used as a base for interior walls such as walls and ceilings of buildings, and buildings using the same. For interior walls.
建築物の壁や天井等の内装壁は、一般的に、下地となる複数の石膏ボードを所定位置に固定した後、石膏ボード間の目地処理を行い、必要に応じて石膏ボード表面に下塗りを施し、さらに石膏ボードの表面に仕上げ塗りを施すもしくは壁紙等を貼り付けることで形成されている。また、上記目地処理は、通常、石膏ボード間の僅かな隙間をコーキング材や目地パテで埋めた後、例えば、布、ビニール、グラスファイバー製等のメッシュ状に加工したテープ材をボンド系の接着剤で目地に沿って貼り、最後にこのテープ材の上に目地ジョイントパテを約８〜１２ｃｍの幅で目地に沿って平滑に塗布することで行われている。 For interior walls such as building walls and ceilings, in general, after fixing a plurality of gypsum boards to be fixed in place, joint processing between the gypsum boards is performed, and if necessary, the surface of the gypsum board is primed. It is formed by applying a finish to the surface of the gypsum board or attaching wallpaper or the like. The joint treatment is usually performed by filling a small gap between gypsum boards with caulking material or joint putty, and then bonding a tape material processed into a mesh shape such as cloth, vinyl, fiberglass, etc. It is carried out by pasting along the joints with an agent, and finally applying a joint joint putty on the tape material smoothly along the joints with a width of about 8 to 12 cm.
しかし、従来の、石膏ボードを下地として用いた場合における内装壁の内装仕上げ方法では、石膏ボード間の目地処理から石膏ボードの表面仕上げを完了するまでに最低でも２日以上を要し、また、その分余計にコストもかかってしまう。 However, in the conventional interior finishing method of the interior wall when using gypsum board as the base, it takes at least two days to complete the surface finishing of the gypsum board from the joint treatment between the gypsum boards, The extra cost will be required.
また、従来の方法により処理された石膏ボード間の目地および目地周辺部（以下、目地処理部という）は、石膏ボード表面部よりも数ｍｍ盛り上がってしまうため、その上から仕上げ用塗材を塗布する場合には、当該目地処理部の盛り上がりを覆うように、かつ該塗材の塗布層表面が平坦になるように塗布する必要が生じる。つまり、この場合、石膏ボード表面に仕上げ用塗材を３ｍｍ以下程度に薄く均一に塗布することは困難である。 In addition, the joints between the gypsum boards treated by the conventional method and the joint peripheral parts (hereinafter referred to as joints treatment parts) swell up several millimeters from the gypsum board surface part. In this case, it is necessary to apply the coating material so as to cover the bulge of the joint processing portion and to make the coating layer surface of the coating material flat. That is, in this case, it is difficult to uniformly apply the finishing coating material to the surface of the gypsum board as thin as 3 mm or less.
さらに、石膏ボード間の目地処理部は、通常、水分の吸水率が他の場所よりも大きいため、目地処理部上に塗布された仕上げ用塗材の乾燥のみが早く進行し、その結果、仕上げ用塗材塗布層にひび割れや色違い等の不具合が発生する恐れがある。 In addition, the joint treatment part between the gypsum boards usually has a higher water absorption rate than other places, so only the drying of the finishing coating material applied on the joint treatment part proceeds quickly, and as a result There is a risk of problems such as cracks and color differences in the coating material coating layer.
さらに、石膏ボード間の処理に用いる目地パテ、テープ材や壁紙を貼るための接着剤、石膏ボード表面に塗布する塗材などには、近年、大きな問題となっているシックハウス症候群の原因であるＶＯＣ（揮発性有機化合物）を発生しうるものが依然として広く用いられており、これに代わる各種内装仕上げ用材料が強く望まれている。 Furthermore, joint putty used for processing between gypsum boards, adhesives for sticking tape materials and wallpaper, coating materials applied to the surface of gypsum board, etc., VOC which is the cause of sick house syndrome, which has become a big problem in recent years. Those that can generate (volatile organic compounds) are still widely used, and various interior finishing materials are strongly desired.
一方、近年、南九州に広く分布し、白色粗しょうの火山噴出物の一種であるシラスを豊富な資源として有効に活用しようとする様々な試みが為されている。代表的な例としては、シラスを急速加熱して得られる中空形状のシラスバルーンを軽量骨材や断熱材として各種の建築用材料に配合することが挙げられる。
本発明は、建築物の内装壁下地として固定された石膏ボードの表面処理および石膏ボード間の目地処理のいずれにも対応することが可能で、かつＶＯＣが発生しない、シラス含有の石膏ボード用塗材およびこれを用いた内装仕上げ方法を提供することを目的とする。 INDUSTRIAL APPLICABILITY The present invention can be applied to both surface treatment of a gypsum board fixed as an interior wall base of a building and joint treatment between gypsum boards, and does not generate VOCs. An object is to provide a material and an interior finishing method using the same.
本発明は、下記（１）〜（９）に記載の事項をその特徴とするものである。 The present invention is characterized by the following items (1) to (9).
（１） 建築物の内装壁として固定された石膏ボードの表面および／または石膏ボード間の目地を処理するための石膏ボード用塗材であって、シラス、石膏、植物性澱粉糊、粘度調整剤および適宜量の水を混練してなり、塗布乾燥後の吸水率が前記石膏ボードと実質的に同一であることを特徴とする石膏ボード用塗材。 (1) Gypsum board coating material for treating the surface of a gypsum board fixed as an interior wall of a building and / or joints between gypsum boards, shirasu, gypsum, vegetable starch paste, viscosity modifier An appropriate amount of water is kneaded, and the water absorption after coating and drying is substantially the same as that of the gypsum board.
（２）前記シラスを１０〜３０重量％、前記石膏を６５〜８５重量％、前記植物性澱粉糊を１〜５重量％および前記粘度調整剤を０．１〜１重量％含むことを特徴とする上記（１）に記載の石膏ボード用塗材。 (2) 10 to 30 wt% of the shirasu, 65 to 85 wt% of the gypsum, 1 to 5 wt% of the vegetable starch paste, and 0.1 to 1 wt% of the viscosity modifier. The coating material for gypsum board as described in said (1).
（３）前記シラスの平均粒径が３００μｍ以下であることを特徴とする上記（１）または（２）に記載の石膏ボード用塗材。 (3) The gypsum board coating material as described in (1) or (2) above, wherein the average particle size of the shirasu is 300 μm or less.
（４）前記植物性澱粉糊が、綿花材、つのまた、またはこれらの混合物であることを特徴とする上記（１）〜（３）のいずれか１項に記載の石膏ボード用塗材。 (4) The gypsum board coating material according to any one of the above (1) to (3), wherein the vegetable starch paste is a cotton material, one, or a mixture thereof.
（５）前記粘度調整剤が水溶性セルロースエーテル、水溶性メチルセルロース、ヒドロキシメチルセルロース、およびヒドロキシプロピルメチルセルロースからなる群から選択される１種以上であることを特徴とする上記（１）〜（４）のいずれか１項に記載の石膏ボード用塗材。 (5) In the above (1) to (4), the viscosity modifier is one or more selected from the group consisting of water-soluble cellulose ether, water-soluble methylcellulose, hydroxymethylcellulose, and hydroxypropylmethylcellulose. The coating material for gypsum boards of any one of Claims.
（６）上記（１）〜（５）のいずれかに記載の石膏ボード用塗材を、内装壁として固定された石膏ボードの表面および／または石膏ボード間の目地に塗布する工程、を有することを特徴とする内装仕上げ方法。 (6) It has the process of apply | coating the coating material for gypsum board in any one of said (1)-(5) to the surface of the gypsum board fixed as an interior wall, and / or the joint between gypsum boards. An interior finishing method characterized by
（７）前記石膏ボード用塗材を塗布して形成された塗布層の厚みが３ｍｍ以下であることを特徴とする上記（６）に記載の内装仕上げ方法。 (7) The interior finishing method as described in (6) above, wherein the coating layer formed by applying the plasterboard coating material has a thickness of 3 mm or less.
（８）前記石膏ボード用塗材を塗布して形成された塗布層表面に、シラスを５０重量％以上含む上塗り材をさらに塗布する工程を有することを特徴とする上記（６）または（７）に記載の内装仕上げ方法。 (8) The above (6) or (7), further comprising a step of further applying a top coating material containing 50% by weight or more of shirasu to the surface of the coating layer formed by coating the gypsum board coating material. The interior finishing method described in 1.
（９）前記上塗り材が、シラスを５０〜７０重量％および石膏を２０〜４０重量％含むことを特徴とする上記（８）に記載の内装仕上げ方法。 (9) The interior finishing method as described in (8) above, wherein the top coat contains 50 to 70% by weight of shirasu and 20 to 40% by weight of gypsum.
本発明によれば、石膏ボード間の目地処理剤としても、石膏ボード表面の下塗り材もしくは仕上げ用塗り材としても好適に用いることができ、かつＶＯＣが発生しない、シラス含有の石膏ボード用塗材およびこれを用いた内装仕上げ方法を提供することが可能となる。 According to the present invention, a shirasu-containing coating material for gypsum board that can be suitably used as a joint treatment agent between gypsum boards, as a primer or finishing coating material on the surface of gypsum board, and does not generate VOC. In addition, it is possible to provide an interior finishing method using the same.
つまり、本発明の石膏ボード用塗材は、特別な前処理を行うことなしに、石膏ボード間の目地（溝）に塗布（充填）するだけで目地処理を行うことができ、なおかつ、石膏ボード表面の仕上げ処理を行うことができるため、当該本発明の塗材のみで１度に石膏ボードの表面処理と石膏ボード間の目地処理を行うことができ、その結果、これら処理を１日で終わらすことができ、従来と比較して大幅な工期短縮とコスト削減を実現することが可能となる。さらに、従来技術と比較して目地処理部の盛り上がりを抑えることができるため、石膏ボードの表面処理層（塗布層）を３ｍｍ以下程度の厚みで薄く均一に形成することも可能となる。また、塗材の塗布乾燥後の吸水率が塗布対象となる石膏ボードと実質的に同一であるため、当該塗材層やその上に形成されうる上塗り材層にひび割れや色違いといった不具合が生じ難い。 That is, the gypsum board coating material of the present invention can be subjected to joint treatment by simply applying (filling) the joints (grooves) between the gypsum boards without any special pretreatment. Since the surface finishing treatment can be performed, the surface treatment of the gypsum board and the joint treatment between the gypsum board can be performed at once with only the coating material of the present invention, and as a result, these treatments are finished in one day. Therefore, it is possible to realize a significant shortening of the construction period and cost reduction compared to the conventional case. Furthermore, since the rise of the joint processing portion can be suppressed as compared with the prior art, the surface treatment layer (coating layer) of the gypsum board can be thinly and uniformly formed with a thickness of about 3 mm or less. In addition, since the water absorption after coating and drying of the coating material is substantially the same as the gypsum board to be coated, problems such as cracks and color differences occur in the coating material layer and the top coating layer that can be formed thereon. hard.
また、石膏ボード表面に本発明の石膏ボード用塗材を下塗り材として塗布し、その上にシラスを主成分として含む上塗り材、特にシラスと石膏を含む上塗り材を塗布した場合には、両塗り材層間の接着性や追従性などが向上し、さらには、脱臭性、調湿性、断熱性、吸音性、マイナスイオン発生機能などのシラスが有する様々な特性を内装壁表面に付与することができるため、室内を常に快適な環境に保つことが可能となる。 In addition, when the gypsum board coating material of the present invention is applied to the surface of the gypsum board as an undercoat, and a top coat containing shirasu as a main component, especially a top coat containing shirasu and gypsum, is applied on both sides. Adhesiveness and followability between material layers are improved, and furthermore, various characteristics possessed by shirasu such as deodorizing property, humidity control property, heat insulating property, sound absorbing property, negative ion generating function can be imparted to the interior wall surface. Therefore, it is possible to always keep the room in a comfortable environment.
本発明の石膏ボード用塗材は、建築物の内装壁として固定された石膏ボードの表面および／または石膏ボード間の目地を処理するためのものであって、シラス、石膏、植物性澱粉糊、粘度調整剤を含む塗材原料を適宜量の水と混練してなるものであり、かつ塗布乾燥後の吸水率が下地となる石膏ボードと実質的に同一であることをその特徴とするものである。 The gypsum board coating material of the present invention is for treating the surface of a gypsum board fixed as an interior wall of a building and / or joints between gypsum boards, and includes shirasu, gypsum, vegetable starch paste, It is obtained by kneading a coating material material containing a viscosity modifier with an appropriate amount of water, and is characterized in that the water absorption after coating and drying is substantially the same as that of the base gypsum board. is there.
本発明の塗材に配合される上記シラスは、南九州に広く分布する火山噴出物の一種で、高温マグマの冷却により結晶分化作用が起こり、マグマの主成分であるＳｉＯ２、Ａｉ２Ｏ３、Ｆｅ２Ｏ３、ＦｅＯ、ＭｇＯ、ＣａＯ、Ｎａ２Ｏ、Ｋ２Ｏ等が互いに集まり鉱物として晶出し、その後ほどなく爆発的に噴出して形成されたものであり、約３割の結晶鉱物と約７割の非晶質の火山ガラスから成っているものである。また、前述したように、近年では、これを豊富な資源として有効に活用しようとする様々な試みが為されており、特に、シラスを加熱処理等して製造されるシラスバルーンは、様々な材料の軽量骨材や増量剤として用いられているが、本願発明において使用する上記シラスは、そのような高温加熱処理等は施さずに、自然乾燥し、篩いにかけて粒径を整えただけのものである。もちろん、上記シラスとは別にシラスバルーンを本発明の塗材に配合してもよく、この場合には、塗布層表面の仕上がりをふわりとソフトな感じにすることができる。 The above Shirasu blended in the coating material of the present invention is a kind of volcanic ejecta widely distributed in South Kyushu, and the crystal differentiation action occurs by cooling of high-temperature magma, and SiO 2 and Ai 2 O 3 which are main components of magma. , Fe 2 O 3 , FeO, MgO, CaO, Na 2 O, K 2 O, etc. are gathered together and crystallized as minerals, and then formed explosively explosively, and about 30% of crystalline minerals And about 70% amorphous volcanic glass. In addition, as described above, in recent years, various attempts have been made to effectively utilize this as an abundant resource. In particular, shirasu balloons manufactured by heat-treating shirasu have various materials. The above-mentioned shirasu used in the present invention is not dried at such a high temperature but is naturally dried and sieved to adjust the particle size. is there. Of course, a shirasu balloon may be blended in the coating material of the present invention separately from the above shirasu, and in this case, the finish of the coating layer surface can be made soft and soft.
また、上記シラスの粒径は、特に限定されないが、３００μｍ以下（６０目アンダー）であることが好ましく、２５０μｍ以下であることがより好ましい。この粒径が３００μｍを越えると、塗布層表面が粗くなり、仕上がりのなめらかさを保てなく恐れがある。もちろん、塗布層表面をあえて粗く仕上げるデザインにする場合には、３００μｍを越える粒径のシラスを用いても構わない。 The particle size of the shirasu is not particularly limited, but is preferably 300 μm or less (60-under), more preferably 250 μm or less. If this particle size exceeds 300 μm, the surface of the coating layer becomes rough, and the smoothness of the finish may not be maintained. Of course, when the surface of the coating layer is intentionally roughened, a shirasu having a particle size exceeding 300 μm may be used.
また、上記シラスは、本発明の塗材の原料（水以外の成分、以下同じ）中、１０〜３０重量％含まれることが好ましく、１５〜２５重量％含まれることがより好ましい。 The shirasu is preferably contained in an amount of 10 to 30% by weight, more preferably 15 to 25% by weight, in the raw material of the coating material of the present invention (components other than water, hereinafter the same).
本発明の塗材に配合される上記石膏は、収縮ひび割れ等に対し比較的強度を有する自硬性の結合材であり、例えば、焼き石膏（ＣａＳＯ４）を主原料とするものを好ましく用いることができる。また、石膏につのまたやゼラチン等の硬化遅延材を添加して硬化時間を調整した石膏プラスターや当該石膏プラスターにさらに川砂、けい砂、軽量骨材、炭酸カルシウム等を混合した石膏プラスターであってもよく、夫々用途に応じて使い分けることができる。 The gypsum blended in the coating material of the present invention is a self-hardening binder having a relatively high strength against shrinkage cracks and the like. For example, it is preferable to use a material mainly composed of calcined gypsum (CaSO 4 ). it can. It is also a gypsum plaster in which hardening time is adjusted by adding a gelatin or other setting delay material to gypsum, and gypsum plaster in which river sand, silica sand, lightweight aggregate, calcium carbonate, etc. are further mixed with the gypsum plaster. It can be used properly according to the usage.
また、上記石膏は、本発明の塗材の原料中、６５〜８５重量％含まれることが好ましく、７０〜８０重量％含まれることがより好ましい。 Moreover, it is preferable that 65-85 weight% is contained in the raw material of the coating material of this invention, and, as for the said gypsum, it is more preferable that 70-80 weight% is contained.
本発明の塗材に配合される上記植物性澱粉糊は、塗材の塗布作業性、接着性、保水性（吸水率）などを調整するために配合するものであり、その種類は特に限定されないが、例えば、綿花材、つのまた、またはこれらの混合物を用いることができる。 The vegetable starch paste blended in the coating material of the present invention is blended to adjust the coating workability, adhesiveness, water retention (water absorption), etc. of the coating material, and the type is not particularly limited. However, for example, cotton material, one or a mixture thereof can be used.
また、上記植物性澱粉糊は、本発明の塗材の原料中、１〜５重量％含まれることが好ましく、１〜３重量％含まれることがより好ましい。 Moreover, it is preferable that 1-5 weight% is contained in the raw material of the coating material of this invention, and, as for the said vegetable starch paste, it is more preferable that 1-3 weight% is contained.
本発明の塗材に配合される上記粘度調整剤は、塗材の塗布作業性、接着性、保水性（吸水率）などを調整するために配合するものであり、その種類は特に限定されないが、好ましくは、天然のセルロース（パルプ繊維）を原料とする、水溶性セルロースエーテル、水溶性メチルセルロース、ヒドロキシメチルセルロース、およびヒドロキシプロピルメチルセルロース等を採用する。 The viscosity modifier blended in the coating material of the present invention is blended in order to adjust the coating workability, adhesiveness, water retention (water absorption), etc. of the coating material, and the type is not particularly limited. Preferably, water-soluble cellulose ether, water-soluble methyl cellulose, hydroxymethyl cellulose, hydroxypropyl methyl cellulose and the like, which are made from natural cellulose (pulp fiber), are used.
また、上記粘度調整剤の配合量は、本発明の塗材の原料中、０．１〜１重量％含まれることが好ましく、０．５〜１重量％含まれることがより好ましい。 Moreover, it is preferable that 0.1-1 weight% is contained in the raw material of the coating material of this invention, and, as for the compounding quantity of the said viscosity modifier, it is more preferable that 0.5-1 weight% is contained.
本発明の塗材には、上記必須成分の他に、必要に応じて、公知の顔料や骨材等の添加材を、本発明の塗材の特性を損なわない範囲で配合してもよい。 In addition to the above essential components, the coating material of the present invention may contain, as necessary, additives such as known pigments and aggregates within a range that does not impair the properties of the coating material of the present invention.
本発明の塗材は、上記塗材原料、すなわち、上記必須成分および必要に応じて添加される添加材を適宜量の水と混練してなるものである。配合する水の量は、塗材の塗布作業性等を考慮して適宜決定すればよく、特に限定されないが、好ましくは、本発明の塗材の原料１００重量部に対して、２０〜５０重量部程度配合することが好ましい。 The coating material of the present invention is obtained by kneading the above-mentioned coating material raw material, that is, the above-mentioned essential components and an additive added as necessary with an appropriate amount of water. The amount of water to be blended may be appropriately determined in consideration of the coating workability of the coating material and the like, and is not particularly limited, but is preferably 20 to 50 wt. It is preferable to blend about 1 part.
また、本発明の塗材を塗布、乾燥してなる塗布層の吸水率が石膏ボードのそれと実質的に同一であることが好ましく、さらには、その伸縮率も実質的に同一であることが好ましい。本発明の塗材の吸水率や伸縮率を石膏ボードのそれと同一にすることで、当該塗材層やその上に形成されるる上塗り材層に生じうるひび割れ等を効果的に防ぐことが可能となる。なお、本発明の塗材の吸水率や伸縮性は、必須成分の配合量を適宜調整することで、所望の値に調整することが可能である。また、本発明において上記「実質的に同一である」とは、本発明の塗材塗布層の吸水率と、処理対象となる石膏ボードの吸水率との差が、３％以内であることを意味し、望ましくは１％以内である（伸縮率も同様）。また、吸水率は、ＪＩＳ Ａ ６９０１（石膏ボード製品、吸水試験）に準拠して測定することができる。 Further, it is preferable that the water absorption rate of the coating layer formed by applying and drying the coating material of the present invention is substantially the same as that of the gypsum board, and further, the expansion / contraction rate is preferably substantially the same. . By making the water absorption rate and expansion / contraction rate of the coating material of the present invention the same as that of the gypsum board, it is possible to effectively prevent cracks and the like that may occur in the coating material layer and the top coating material layer formed thereon. Become. In addition, the water absorption rate and stretchability of the coating material of the present invention can be adjusted to desired values by appropriately adjusting the blending amounts of the essential components. Further, in the present invention, the above “substantially the same” means that the difference between the water absorption rate of the coating material application layer of the present invention and the water absorption rate of the gypsum board to be treated is within 3%. This means that it is desirably within 1% (the same applies to the expansion / contraction rate). The water absorption rate can be measured according to JIS A 6901 (gypsum board product, water absorption test).
以上のような本発明の塗材は、建築物の内装壁下地として固定された石膏ボードの表面や石膏ボード間の目地を容易に処理することができるため、石膏ボード用の内装仕上げ材料として非常に有用なものである。つまり、目地処理については、従来必要であった前処理を行うことなく、単に目地（溝）に本発明の塗材を塗布（充填）すればよいため、大幅にその工期とコストを削減することができ、さらに、これを石膏ボード表面の仕上げ用塗材として兼用することで、石膏ボード表面の塗材層（仕上げ材層）を３ｍｍ以下程度に薄く均一に塗布することもでき、なおかつ、施工コストと時間を大幅に削減することが可能となる。 Since the coating material of the present invention as described above can easily treat the surface of the gypsum board fixed as the interior wall base of the building and the joints between the gypsum boards, it is very useful as an interior finishing material for gypsum board. It is useful for. In other words, joint processing can be performed by simply applying (filling) the coating material of the present invention to the joints (grooves) without performing the pre-treatment that has been necessary in the past. Furthermore, by using this as a finishing coating material on the gypsum board surface, the coating layer (finishing material layer) on the gypsum board surface can be applied thinly and uniformly to about 3 mm or less. Costs and time can be greatly reduced.
本発明の内装仕上げ方法は、例えば、上記本発明の塗材を、内装壁として固定された石膏ボードの表面および／または石膏ボード間の目地に、塗布表面が平坦になるようにコテやローラー等で塗布する工程を有することをその特徴とするものである。 The interior finishing method of the present invention includes, for example, a trowel, a roller or the like so that the coating surface is flat on the surface of the gypsum board fixed as the interior wall and / or the joint between the gypsum boards. It has the process of apply | coating by this.
また、本発明の内装仕上げ方法において、上記本発明の塗材自体を仕上げ用塗材として用いる場合には、当該塗材層表面の意匠性を高めるために、各種デザインによる表面仕上加工を施してもよい。一方、上記本発明の塗材を下塗り材として用いる場合には、当該塗材層表面に別途、上塗り材（仕上げ用塗材）を塗布する。 Further, in the interior finishing method of the present invention, when the coating material itself of the present invention is used as a finishing coating material, in order to enhance the design of the surface of the coating material layer, surface finishing processing by various designs is performed. Also good. On the other hand, when the coating material of the present invention is used as an undercoat material, a top coating material (finishing coating material) is separately applied to the surface of the coating material layer.
上記上塗り材としては、特に限定されないが、天然素材を主成分とし、ＶＯＣが発生しないものであることが好ましい。具体的には、シラス、ボラ、珪藻土、貝殻粉末などの多孔質物質を主成分とする無機系塗材であることが好ましい。本発明の塗材の塗布層表面との接着性などを考慮すると、シラスを主成分として５０重量％以上含む塗材を用いることが好ましく、シラスを５０〜７０重量％および石膏を２０〜４０重量％含む塗材を用いることがより好ましい。より具体的には、主原料としてシラスを含み、なおかつ、セメントや石膏等の結合材、粘土材、シラスバルーン、接着補強材等を含む「中霧島壁」（株式会社高千穂製、商品名、シラス含有無機系塗材）が挙げられ、これを用いた場合には、内装壁に脱臭性、調湿性、断熱性、吸音性、マイナスイオン発生機能などのシラスが有する様々な特性を効果的に付与することが可能である。 The top coating material is not particularly limited, but is preferably a material mainly composed of a natural material and does not generate VOC. Specifically, an inorganic coating material mainly composed of a porous material such as shirasu, mullet, diatomaceous earth, or shell powder is preferable. Considering the adhesiveness of the coating material of the present invention to the coating layer surface, it is preferable to use a coating material containing 50% by weight or more of shirasu as a main component, 50 to 70% by weight of shirasu and 20 to 40% of gypsum. It is more preferable to use a coating material containing 1%. More specifically, “Nakakirishima Wall” (trade name, Shirasu, manufactured by Takachiho Co., Ltd.) containing Shirasu as the main raw material and also containing binders such as cement and gypsum, clay materials, Shirasu balloons, adhesive reinforcements, etc. When used, the interior walls are effectively imparted with various characteristics of shirasu such as deodorization, humidity control, heat insulation, sound absorption, and negative ion generation function. Is possible.
Claims (7)
を有することを特徴とする建築物の内装壁。 It has a some gypsum board and the coating layer provided in the joint of the surface of the said gypsum board and / or the gypsum board by the dried material of the coating material for gypsum boards of any one of Claims 1-5. An interior wall of a building characterized by
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| JP2013113016A (en) * | 2011-11-29 | 2013-06-10 | Yoshino Gypsum Co Ltd | Finishing structure and construction method of interior wall corner |
| JP2015537066A (en) * | 2012-10-09 | 2015-12-24 | ユナイテッド・ステイツ・ジプサム・カンパニー | Low moisture drying type bonding compound |
| JP2018177657A (en) * | 2017-04-05 | 2018-11-15 | 東和薬品株式会社 | Levetiracetam-containing pharmaceutical composition and method for producing the same |
| JP6931909B1 (en) * | 2021-05-20 | 2021-09-08 | 石見大田工業株式会社 | Gypsum board manufacturing method, wall construction method, ceiling construction method, wall structure, and ceiling structure |
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