JP2021074678A - Method of forming laminate coating film, paint for intermediate coating, and outer wall structure - Google Patents
Method of forming laminate coating film, paint for intermediate coating, and outer wall structure Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 247
- 239000011248 coating agent Substances 0.000 title claims abstract description 245
- 239000003973 paint Substances 0.000 title claims abstract description 230
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000002245 particle Substances 0.000 claims abstract description 82
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 42
- 229920005989 resin Polymers 0.000 claims description 33
- 239000011347 resin Substances 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 25
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 7
- 239000003566 sealing material Substances 0.000 claims description 7
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 239000005002 finish coating Substances 0.000 abstract description 8
- 239000000049 pigment Substances 0.000 description 13
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 11
- 229920002050 silicone resin Polymers 0.000 description 10
- 239000000839 emulsion Substances 0.000 description 7
- 239000004925 Acrylic resin Substances 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000010422 painting Methods 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000007761 roller coating Methods 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000012463 white pigment Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- -1 ocher Chemical compound 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920005792 styrene-acrylic resin Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 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
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Finishing Walls (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
Description
本発明は、積層塗膜の形成方法、中塗り用塗料および外壁構造に関する。 The present invention relates to a method for forming a laminated coating film, a coating material for intermediate coating, and an outer wall structure.
ＡＬＣ（軽量気泡コンクリート）やＰＣ（プレキャスト・コンクリート）等の壁パネルは、建物の壁材、床材、屋根材等の建築材料として広く用いられている。このような壁パネルは、パネル同士の継ぎ目（隣り合う複数枚のパネルの隙間）に生じる目地に、通常は、シーリング材を充填した後、全面に仕上げ塗装が施される。仕上げ塗装が複数回行われて積層塗膜が形成されることもある。 Wall panels such as ALC (lightweight cellular concrete) and PC (precast concrete) are widely used as building materials such as building wall materials, floor materials, and roofing materials. In such a wall panel, joints formed at joints between panels (gap between a plurality of adjacent panels) are usually filled with a sealing material, and then a finish coating is applied to the entire surface. The finish coating may be performed multiple times to form a laminated coating film.
しかし、仕上げ塗装後においても、シーリング材を充填した目地部分の凹凸が目地模様として残ってしまい、意匠性が損なわれる場合があった。近年では、壁パネルを用いた外壁において、大壁風の平面意匠が望まれていることもあり、目地模様を目立ちにくくして欲しいといった要請は非常に強い。 However, even after the finish coating, the unevenness of the joint portion filled with the sealing material remains as a joint pattern, which may impair the design. In recent years, there has been a demand for a large wall-like flat design for an outer wall using a wall panel, and there is a strong demand for the joint pattern to be less noticeable.
そのため、シーリング材を充填した目地部分の凹凸を少なくするような壁パネルの目地埋め工法などが提案されている。 Therefore, a joint filling method for wall panels has been proposed to reduce the unevenness of the joint portion filled with the sealing material.
例えば、特許文献１には「壁パネル同士を突き合わせた目地に沿って設けられた凹部にシーリング材を充填するシーリング材充填ステップと、前記凹部に充填された前記シーリング材を所定の期間養生させる養生ステップと、養生ステップの後で、前記凹部に目地埋め材を充填する目地埋め材充填ステップと、前記目地埋め材が充填された充填面に仕上げ材を塗布する塗装ステップと、を含む壁パネルの目地埋め工法」が記載されており、これによって「仕上げ材で覆った目地を目立ち難くすることができる」とある。 For example, Patent Document 1 states, "A sealant filling step of filling a recess provided along a joint where wall panels are butted against each other with a sealant, and curing of the sealant filled in the recess for a predetermined period of time. A wall panel including a step, a joint filling material filling step of filling the recess with a joint filling material, and a painting step of applying a finishing material to the filling surface filled with the joint filling material after the curing step. "Joint filling method" is described, which states that "the joints covered with the finishing material can be made inconspicuous."
一方、漆喰調の落ち着きのある比較的平坦な仕上がり感を得るための漆喰調の塗料が知られている。 On the other hand, plaster-like paints for obtaining a calm and relatively flat finish feeling of plaster-like are known.
例えば、特許文献２には「消石灰或いは炭酸カルシウムのいずれか或いは両成分を総量として４０〜８０重量％含有し、合成樹脂エマルションを樹脂成分が１０重量％以下である漆喰調塗材」が記載されている。 For example, Patent Document 2 describes "a plaster-like coating material containing 40 to 80% by weight of either or both components of slaked lime or calcium carbonate and having a resin component of 10% by weight or less of a synthetic resin emulsion". ing.
上記特許文献１に記載された目地埋め工法などによって、仕上げ材で覆った目地部分（目地模様）を目立ち難くすることができる。しかしながら、目地模様がほぼわからないようにするためには、非常に大きな骨材（例えば平均粒子径が１．４ｍｍ程度の炭酸カルシウム）を多量に配合した仕上げ材を塗布する必要があった。そのため、仕上がり感がゴツゴツしたものとなってしまいがちであった。 By the joint filling method or the like described in Patent Document 1, the joint portion (joint pattern) covered with the finishing material can be made inconspicuous. However, in order to make the joint pattern almost invisible, it was necessary to apply a finishing material containing a large amount of a very large aggregate (for example, calcium carbonate having an average particle size of about 1.4 mm). Therefore, the finish tends to be rugged.
一方、漆喰調の落ち着きのある比較的平坦な仕上がり感を得たい場合には、仕上げ材として、いわゆる漆喰調の塗料を用いることが考えられる。しかしながら、漆喰調の仕上がり感は得られるものの目地模様が表面に現れてしまうことがあった。このような現象は、漆喰調の塗料を複数回（２〜３回）塗布して積層塗膜とした場合には若干緩和されるものの、目地模様を隠すことは難しかった。 On the other hand, when it is desired to obtain a plaster-like calm and relatively flat finish, it is conceivable to use a so-called plaster-like paint as a finishing material. However, although a plaster-like finish can be obtained, joint patterns sometimes appear on the surface. Such a phenomenon was slightly alleviated when the plaster-like paint was applied a plurality of times (2 to 3 times) to form a laminated coating film, but it was difficult to hide the joint pattern.
本発明は、上述の事柄に留意してなされたものであって、目地模様などの下地模様が表面に現れにくい積層塗膜の形成方法などを提供することを目的とする。 The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide a method for forming a laminated coating film in which a base pattern such as a joint pattern is unlikely to appear on the surface.
上記課題を解決するために、外壁などの被塗装面の表面に下塗り用塗料を塗布して成膜する下塗り塗膜成膜工程と、この下塗り塗膜成膜工程によって成膜された下塗り塗膜の表面に、中塗り用塗料を塗布して成膜する中塗り塗膜成膜工程と、この中塗り塗膜成膜工程によって成膜された中塗り塗膜の表面に、上塗り用塗料を塗布して成膜する上塗り塗膜成膜工程と、を備えており、前記下塗り用塗料、前記中塗り用塗料および前記上塗り用塗料は、それぞれ骨材を含み、前記中塗り用塗料は、前記下塗り用塗料および前記上塗り用塗料のうち、より多くの骨材を含む塗料と、同量以上の骨材を含んでいる、あるいは、前記中塗り用塗料の骨材は、前記下塗り用塗料および前記上塗り用塗料のうち、より大きな粒子径の骨材を含む塗料に含まれる最も大きな粒子径の骨材と、同径以上の粒子径の骨材を含有している、積層塗膜の形成方法とした。 In order to solve the above problems, an undercoat coating film forming step of applying an undercoating paint to the surface of the surface to be coated such as an outer wall to form a film, and an undercoat coating film formed by this undercoating film forming step. An intermediate coating coating film forming step of applying an intermediate coating coating film to the surface of the above, and an intermediate coating coating film forming step of applying the top coating coating material to the surface of the intermediate coating coating film formed by this intermediate coating coating film forming step. The undercoat coating film forming step is provided, and the undercoat coating, the intermediate coating, and the topcoat each contain an aggregate, and the intermediate coating is the undercoat. Among the paint for the top coat and the paint for the top coat, the paint containing more aggregate and the aggregate containing the same amount or more of the aggregate, or the aggregate of the paint for the intermediate coat is the paint for the undercoat and the top coat. A method for forming a laminated coating film, which contains an aggregate having the largest particle size contained in a paint containing an aggregate having a larger particle size and an aggregate having a particle size equal to or larger than that of the above-mentioned paint. ..
この積層塗膜の形成方法によって、目地模様などの下地模様が表面に現れにくい（下地隠蔽力が高い）積層塗膜を形成することができる。
すなわち、前記中塗り用塗料が、前記下塗り用塗料および前記上塗り用塗料のうち、より多くの骨材を含む塗料と、同量以上の骨材を含んでいる、あるいは、前記中塗り用塗料の骨材は、前記下塗り用塗料および前記上塗り用塗料のうち、より大きな粒子径の骨材を含む塗料に含まれる最も大きな粒子径の骨材と、同径以上の粒子径の骨材を含有していることによって、中塗り用塗料によって成膜される層が厚みを増すとともに隠蔽力が高まり、目地模様などの下地模様が表面に現れにくくなる。
ここで、前記中塗り用塗料は、前記下塗り用塗料および前記上塗り用塗料よりも多くの骨材を含んでいる、あるいは、前記中塗り用塗料の骨材は、前記下塗り用塗料の骨材および前記上塗り用塗料の骨材よりも大きな粒子径の骨材を含有している、積層塗膜の形成方法とすることができる。
By this method of forming a laminated coating film, it is possible to form a laminated coating film in which a base pattern such as a joint pattern is unlikely to appear on the surface (high base hiding power).
That is, the intermediate coating paint contains the same amount or more of aggregate as the paint containing more aggregate among the undercoat paint and the topcoat paint, or the intermediate coating paint. The aggregate contains the largest particle size aggregate contained in the paint containing the larger particle size aggregate among the undercoat paint and the top coat paint, and the aggregate having the same or larger particle size. As a result, the layer formed by the intermediate coating paint is thickened and the hiding power is increased, so that the base pattern such as the joint pattern is less likely to appear on the surface.
Here, the intermediate coating paint contains more aggregate than the undercoat paint and the topcoat paint, or the aggregate of the intermediate coating is the aggregate of the undercoat paint and the aggregate of the undercoat paint. It can be used as a method for forming a laminated coating film, which contains an aggregate having a particle size larger than that of the topcoat paint.
また、上記課題を解決するために、外壁などの被塗装面の表面に下塗り用塗料を塗布して成膜する下塗り塗膜成膜工程と、この下塗り塗膜成膜工程によって成膜された下塗り塗膜の表面に、中塗り用塗料を塗布して成膜する中塗り塗膜成膜工程と、この中塗り塗膜成膜工程によって成膜された中塗り塗膜の表面に、上塗り用塗料を塗布して成膜する上塗り塗膜成膜工程と、を備えており、前記下塗り用塗料、前記中塗り用塗料および前記上塗り用塗料は、それぞれ骨材を含み、前記中塗り用塗料は、前記下塗り用塗料および前記上塗り用塗料よりも多くの骨材を含むとともに、前記中塗り用塗料の骨材は、前記下塗り用塗料の骨材および前記上塗り用塗料の骨材よりも大きな粒子径の骨材を含有している、積層塗膜の形成方法とすることもできる。 Further, in order to solve the above problems, an undercoat coating film forming step of applying an undercoating paint to the surface of a surface to be coated such as an outer wall to form a film, and an undercoating film forming step formed by this undercoat coating film forming step. An intermediate coating film forming step in which an intermediate coating coating is applied to the surface of the coating film to form a film, and a top coating coating material is applied to the surface of the intermediate coating coating film formed by the intermediate coating coating film forming step. The top coat coating film forming step of applying and forming a film is provided, and the undercoat paint, the intermediate coat paint, and the top coat paint each contain an aggregate, and the intermediate coat paint includes an aggregate. It contains more aggregate than the undercoat paint and the topcoat paint, and the aggregate of the intermediate coat has a larger particle size than the aggregate of the undercoat paint and the aggregate of the topcoat paint. It can also be a method for forming a laminated coating film containing an aggregate.
この積層塗膜の形成方法によって、より一層、目地模様などの下地模様が表面に現れにくい（下地隠蔽力が高い）積層塗膜を形成することができる。
すなわち、中塗り用塗料が、下塗り用塗料および上塗り用塗料よりも多くの骨材を含むとともに、中塗り用塗料の骨材が、下塗り用塗料の骨材および上塗り用塗料の骨材よりも大きな粒子径の骨材を含有していることで、中塗り用塗料によって成膜される層が厚みを増すとともに隠蔽力が高まり、一層、目地模様などの下地模様が表面に現れにくくなるのである。
また、このような中塗り用塗料を被塗装面に直接塗布した場合、多くの骨材が配合されているため、耐候性や密着性が十分確保できないことも考えられる。しかしながら、中塗り用塗料で下地隠蔽力を強化しつつ、下塗り用塗料で密着性や耐候性を確保し、上塗り用塗料で耐候性や意匠性を確保することで、積層塗膜として要求特性を実現しているのである。
このようなこともあり、中塗り用塗料、下塗り用塗料および上塗り用塗料に用いられる樹脂は、同種の樹脂であることが好ましい。
これら積層塗膜の形成方法において、下塗り用塗料、中塗り用塗料および上塗り用塗料は、骨材に加えて顔料を含むことが好ましい。顔料としては、例えば、着色顔料を用いることができる。
By this method of forming a laminated coating film, it is possible to form a laminated coating film in which a base pattern such as a joint pattern is less likely to appear on the surface (high base hiding power).
That is, the intermediate coating contains more aggregate than the undercoat and the topcoat, and the aggregate of the intermediate coating is larger than the aggregate of the undercoat and the topcoat. By containing the aggregate having a particle size, the layer formed by the intermediate coating paint increases the thickness and the hiding power, and the base pattern such as the joint pattern is less likely to appear on the surface.
Further, when such an intermediate coating paint is directly applied to the surface to be coated, it is possible that sufficient weather resistance and adhesion cannot be ensured because a large amount of aggregate is mixed. However, by strengthening the base hiding power with the intermediate coating paint, ensuring the adhesion and weather resistance with the undercoating paint, and ensuring the weather resistance and designability with the topcoating paint, the required characteristics as a laminated coating film can be obtained. It has been realized.
For this reason, it is preferable that the resins used for the intermediate coating paint, the undercoat coating, and the topcoat coating are the same type of resin.
In the method for forming the laminated coating film, the undercoat paint, the intermediate coat paint and the topcoat paint preferably contain a pigment in addition to the aggregate. As the pigment, for example, a coloring pigment can be used.
ここで、下塗り用塗料、中塗り用塗料および上塗り用塗料に含まれる骨材は、炭酸カルシウムである、積層塗膜の形成方法とすることができる。 Here, the aggregate contained in the undercoat paint, the intermediate coat paint, and the topcoat paint can be a method for forming a laminated coating film, which is calcium carbonate.
炭酸カルシウムは、漆喰調の塗膜を形成するのに好適である。 Calcium carbonate is suitable for forming a plaster-like coating film.
上塗り用塗料は、樹脂成分を８〜１７重量％と、骨材を４５〜６５重量％と、を含んでいる、積層塗膜の形成方法とすることが好ましい。 The topcoat paint preferably uses a method for forming a laminated coating film, which comprises 8 to 17% by weight of a resin component and 45 to 65% by weight of an aggregate.
この上塗り用塗料も、漆喰調の塗膜を形成するのに好適である。 This topcoat paint is also suitable for forming a plaster-like coating film.
中塗り用塗料は、樹脂成分を６〜１３重量％と、骨材を５５〜７５重量％と、を含んでおり、骨材のうち７００μｍ以上の粒子径のものが２．５〜７．５重量％を占める、積層塗膜の形成方法とすることも好ましい。
より具体的には、中塗り用塗料は、樹脂成分を６〜１３重量％と、平均粒子径１８〜２６μｍの骨材を、３〜７重量％と、平均粒子径９０〜１３０μｍの骨材を、３〜７重量％と、平均粒子径２５０〜２９０μｍの骨材を、３０〜６０重量％と、平均粒子径６００〜８００μｍの骨材を、７〜１３重量％と、を含んでいる、積層塗膜の形成方法とすることが好ましい。
The paint for intermediate coating contains 6 to 13% by weight of a resin component and 55 to 75% by weight of an aggregate, and 2.5 to 7.5 of the aggregates having a particle size of 700 μm or more. It is also preferable to use a method for forming a laminated coating film, which accounts for% by weight.
More specifically, the intermediate coating paint contains 6 to 13% by weight of a resin component, an aggregate having an average particle size of 18 to 26 μm, and 3 to 7% by weight, and an aggregate having an average particle size of 90 to 130 μm. Laminated, containing 3 to 7% by weight, an aggregate having an average particle size of 250 to 290 μm, 30 to 60% by weight, and an aggregate having an average particle size of 600 to 800 μm, 7 to 13% by weight. It is preferable to use a method for forming a coating film.
この中塗り用塗料は、十分な成膜厚みと隠蔽力を確保することができ、より一層、目地模様などの下地模様が表面に現れにくくなる。 This intermediate coating paint can secure a sufficient film thickness and hiding power, and further makes it difficult for a base pattern such as a joint pattern to appear on the surface.
下塗り用塗料と上塗り用塗料が同じ組成である、積層塗膜の形成方法とすることも好ましい。 It is also preferable to use a method for forming a laminated coating film in which the undercoat paint and the topcoat paint have the same composition.
上塗り用塗料は、漆喰調で意匠性に優れるほか、中塗り用塗料と比較して骨材の含有量が少ない場合など、耐候性に優れる。また、下地との密着性も高い。そのため、上塗り用塗料を下塗り用塗料として用いることができ、これによって、トータルの塗料コストが低減される。 The topcoat paint is plaster-like and has excellent design properties, and also has excellent weather resistance when the content of aggregate is lower than that of the intermediate coat paint. In addition, it has high adhesion to the base. Therefore, the topcoat paint can be used as the undercoat paint, thereby reducing the total paint cost.
被塗装面が、隣り合う複数枚のパネルと、前記隣り合う複数枚のパネルの隙間に充填されたシーリング材からなる目地部と、を有している、積層塗膜の形成方法とすることも好ましい。 It is also possible to use a method for forming a laminated coating film, wherein the surface to be coated has a plurality of adjacent panels and a joint portion made of a sealing material filled in a gap between the plurality of adjacent panels. preferable.
下塗り用塗料、中塗り用塗料および上塗り用塗料を用いて形成される積層塗膜は、密着性や耐候性などを確保しつつ、目地模様などの下地模様が表面に現れにくいため、上記被塗装面に対して好適に用いられる。 The laminated coating film formed by using the undercoat paint, the intermediate coat paint, and the top coat paint is to be coated because the base pattern such as the joint pattern is hard to appear on the surface while ensuring the adhesion and weather resistance. Suitable for surfaces.
上記積層塗膜の形成方法に用いる中塗り用塗料としては、樹脂成分を６〜１３重量％と、骨材を５５〜７５重量％と、を含み、骨材のうち７００μｍ以上の粒子径のものが２．５〜７．５重量％を占めるものが好適に用いられる。
より具体的には、樹脂成分を６〜１３重量％と、平均粒子径１８〜２６μｍの骨材を、３〜７重量％と、平均粒子径９０〜１３０μｍの骨材を、３〜７重量％と、平均粒子径２５０〜２９０μｍの骨材を、３０〜６０重量％と、平均粒子径６００〜８００μｍの骨材を、７〜１３重量％と、を含んでいるものが好適に用いられる。
The intermediate coating paint used in the method for forming the laminated coating film contains 6 to 13% by weight of a resin component and 55 to 75% by weight of an aggregate, and has a particle size of 700 μm or more among the aggregates. Is preferably used in an amount of 2.5 to 7.5% by weight.
More specifically, the resin component is 6 to 13% by weight, the aggregate having an average particle size of 18 to 26 μm is 3 to 7% by weight, and the aggregate having an average particle size of 90 to 130 μm is 3 to 7% by weight. An aggregate containing an average particle size of 250 to 290 μm and 30 to 60% by weight and an aggregate having an average particle size of 600 to 800 μm of 7 to 13% by weight are preferably used.
また、上記課題は、外壁の被塗装面の表面に下塗り用塗料を塗布して成膜した下塗り塗膜と、この下塗り塗膜の表面に、中塗り用塗料を塗布して成膜した中塗り塗膜と、この中塗り塗膜の表面に、上塗り用塗料を塗布して成膜した上塗り塗膜と、を備えており、前記下塗り用塗料、前記中塗り用塗料および前記上塗り用塗料は、それぞれ骨材を含み、前記中塗り用塗料は、前記下塗り用塗料および前記上塗り用塗料のうち、より多くの骨材を含む塗料と、同量以上の骨材を含んでいる、あるいは、前記中塗り用塗料の骨材は、前記下塗り用塗料および前記上塗り用塗料のうち、より大きな粒子径の骨材を含む塗料に含まれる最も大きな粒子径の骨材と、同径以上の粒子径の骨材を含有している、外壁構造によっても解決される。
すなわち、前記中塗り塗膜は、前記下塗り塗膜および前記上塗り塗膜のうち、より多くの骨材を含む塗膜と、同量以上の骨材を含んでいる、あるいは、前記中塗り塗膜の骨材は、前記下塗り塗膜および前記上塗り塗膜のうち、より大きな粒子径の骨材を含む塗膜に含まれる最も大きな粒子径の骨材と、同径以上の粒子径の骨材を含有している、こととなる。
ここで、前記中塗り塗膜は、前記下塗り塗膜および前記上塗り塗膜よりも多くの骨材を含んでいる、あるいは、前記中塗り塗膜の骨材は、前記下塗り塗膜の骨材および前記上塗り塗膜の骨材よりも大きな粒子径の骨材を含有している、外壁構造とすることができる。
また、前記中塗り塗膜は、前記下塗り塗膜および前記上塗り塗膜よりも多くの骨材を含むとともに、前記中塗り塗膜の骨材は、前記下塗り塗膜の骨材および前記上塗り塗膜の骨材よりも大きな粒子径の骨材を含有している、外壁構造とすることが好ましい。
Further, the above-mentioned problems are the undercoat coating film formed by applying the undercoating paint to the surface of the surface to be coated of the outer wall, and the intermediate coating formed by applying the intermediate coating paint to the surface of the undercoat coating. A coating film and a topcoat coating film formed by applying a topcoat coating material to the surface of the intermediate coating film are provided, and the undercoating paint, the intermediate coating material, and the topcoating paint are provided. Each of the intermediate coating paints contains an aggregate, and the intermediate coating material contains, or contains, the same amount or more of the aggregates as the paint containing more aggregates among the undercoating paint and the topcoating paint. The aggregate of the coating paint is an aggregate having the largest particle size contained in the paint containing the aggregate having a larger particle size among the undercoating paint and the top coating paint, and bone having a particle size equal to or larger than that of the aggregate. It is also solved by the outer wall structure, which contains the material.
That is, the intermediate coating film contains the same amount or more of aggregate as the coating film containing more aggregate among the undercoat coating film and the topcoat coating film, or the intermediate coating coating film. Among the undercoat coating film and the topcoat coating film, the aggregate of the above is the aggregate having the largest particle size contained in the coating film containing the aggregate having a larger particle size, and the aggregate having the same or more particle size. It will be contained.
Here, the intermediate coating film contains more aggregate than the undercoat coating film and the topcoat coating film, or the aggregate of the intermediate coating film is the aggregate of the undercoat coating film and the aggregate. The outer wall structure may contain an aggregate having a particle size larger than that of the topcoat coating film.
Further, the intermediate coating film contains more aggregate than the undercoat coating film and the topcoat coating film, and the aggregate of the intermediate coating film includes the aggregate of the undercoat coating film and the topcoat coating film. It is preferable to have an outer wall structure containing an aggregate having a particle size larger than that of the above-mentioned aggregate.
本発明により、目地模様などの下地模様が表面に現れにくい積層塗膜の形成方法などを提供することができる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a method for forming a laminated coating film in which a base pattern such as a joint pattern is unlikely to appear on the surface.
以下、本発明の実施形態を例示説明する。積層塗膜の形成方法は、下塗り塗膜成膜工程と、中塗り塗膜成膜工程と、上塗り塗膜成膜工程と、を備えている。以降、工程毎に詳説するが、本発明は以下の実施形態などに限定されるものではない。
なお、本明細書において「平均粒子径」は、重量累積粒度分布の５０％径であり、粒度分布の測定には、レーザー回折式粒度分布測定装置（日機装株式会社製 HRAマイクロトラック）を用いた。
Hereinafter, embodiments of the present invention will be illustrated and described. The method for forming the laminated coating film includes an undercoat coating film forming step, an intermediate coating film forming step, and a topcoat coating film forming step. Hereinafter, the present invention will be described in detail for each step, but the present invention is not limited to the following embodiments and the like.
In the present specification, the "average particle size" is 50% of the weight cumulative particle size distribution, and a laser diffraction type particle size distribution measuring device (HRA Microtrac manufactured by Nikkiso Co., Ltd.) was used to measure the particle size distribution. ..
［下塗り塗膜成膜工程］
下塗り塗膜成膜工程は、外壁などの被塗装面の表面に下塗り用塗料を塗布して成膜する工程である。
[Undercoat coating film formation process]
The undercoat coating film forming step is a step of applying an undercoating paint to the surface of the surface to be coated such as an outer wall to form a film.
下塗り用塗料が塗布される被塗装面は、特に限定されないが、ＡＬＣなどの壁パネルを張って、パネル同士の継ぎ目に生じる目地部分にシーリング材などを充填した構成を有するものが好適である。本発明の積層塗膜によって、壁パネル間に生じる目地模様を目立ち難くすることができる。 The surface to be coated to which the undercoat paint is applied is not particularly limited, but one having a structure in which a wall panel such as ALC is stretched and a joint portion formed at a joint between the panels is filled with a sealing material or the like is preferable. With the laminated coating film of the present invention, the joint pattern generated between the wall panels can be made inconspicuous.
１．顔料
下塗り用塗料は顔料を含むことが好ましい。顔料としては、例えば、酸化チタン、黄色酸化鉄、赤色酸化鉄（酸化第二鉄：ベンガラ）、フタロシアニンブルー、オーカー、群青、カーボンブラックなどを用いることができるが、これらに限定されるものではない。白色漆喰調の下塗り用塗料とする場合には、白色顔料としての酸化チタンを用いる場合が多い。
1. 1. The pigment undercoat coating preferably contains a pigment. As the pigment, for example, titanium oxide, yellow iron oxide, red iron oxide (ferrous oxide: red iron oxide), phthalocyanine blue, ocher, ultramarine, carbon black and the like can be used, but the pigment is not limited thereto. .. Titanium oxide as a white pigment is often used as a white plaster-like undercoat paint.
２．骨材
また、下塗り用塗料は骨材を含む。骨材としては、例えば、寒水石、珪砂、炭酸カルシウムなどが挙げられるが、これらに限定されるものではない。なかでも、骨材として炭酸カルシウムを用いることが好ましい。
下塗り用塗料は、骨材を４５〜６５重量％含むことが好ましく、骨材を５０〜６０重量％含むことがより好ましく、骨材を５２〜５６重量％含むことが最も好ましい。
2. Aggregate The undercoat paint also contains aggregate. Examples of the aggregate include, but are not limited to, cold water stone, silica sand, calcium carbonate and the like. Of these, it is preferable to use calcium carbonate as the aggregate.
The undercoat paint preferably contains 45 to 65% by weight of aggregate, more preferably 50 to 60% by weight of aggregate, and most preferably 52 to 56% by weight of aggregate.
下塗り用塗料に含まれる骨材について、例えば、平均粒子径１８〜２６μｍの骨材、平均粒子径９０〜１３０μｍの骨材、平均粒子径２５０〜２９０μｍの骨材、平均粒子径３５０〜４５０μｍの骨材を単独又は適宜組み合わせて用いることができる。
より具体的には、平均粒子径１８〜２６μｍの骨材を、４．５〜９．０重量％、平均粒子径９０〜１３０μｍの骨材を、２０〜４５重量％、平均粒子径２５０〜２９０μｍの骨材を、４．５〜９．０重量％、平均粒子径３５０〜４５０μｍの骨材を、４．５〜９．０重量％用いることができる。
Regarding the aggregates contained in the undercoat paint, for example, an aggregate having an average particle size of 18 to 26 μm, an aggregate having an average particle size of 90 to 130 μm, an aggregate having an average particle size of 250 to 290 μm, and an aggregate having an average particle size of 350 to 450 μm. The materials can be used alone or in combination as appropriate.
More specifically, an aggregate having an average particle size of 18 to 26 μm is 4.5 to 9.0% by weight, an aggregate having an average particle size of 90 to 130 μm is 20 to 45% by weight, and an average particle size is 250 to 290 μm. As for the aggregate of 4.5 to 9.0% by weight, and 4.5 to 9.0% by weight of the aggregate having an average particle size of 350 to 450 μm can be used.
なお、後述するように、下塗り用塗料に含まれる骨材よりも大きな粒子径の骨材が、中塗り用塗料の骨材の一部に含まれていることが好ましい。 As will be described later, it is preferable that an aggregate having a particle size larger than that of the aggregate contained in the undercoat paint is contained in a part of the aggregate of the intermediate coat paint.
３．樹脂成分
下塗り用塗料の樹脂成分は、特に限定されない。例えば、アクリル樹脂、エチレン‐アクリル樹脂、酢酸ビニル‐アクリル樹脂、スチレン‐アクリル樹脂、ウレタン樹脂、シリコン樹脂、ウレタン‐アクリル樹脂、シリコン‐アクリル樹脂等公知の合成樹脂を用いることができる。なかでも、耐候性の面から、アクリルシリコーン系樹脂を用いることが好ましい。例えば、アクリルシリコーン樹脂やセラミック変性アクリルシリコーン樹脂は好適である。
3. 3. Resin component The resin component of the undercoat paint is not particularly limited. For example, known synthetic resins such as acrylic resin, ethylene-acrylic resin, vinyl acetate-acrylic resin, styrene-acrylic resin, urethane resin, silicon resin, urethane-acrylic resin, and silicon-acrylic resin can be used. Above all, it is preferable to use an acrylic silicone resin from the viewpoint of weather resistance. For example, acrylic silicone resin and ceramic modified acrylic silicone resin are suitable.
下塗り用塗料の樹脂成分は、水の中に樹脂を微粒子にして重合した合成樹脂エマルションの形態で用いることが好ましい。アクリルシリコーン樹脂エマルションとして、例えば、旭化成株式会社製「ポリデュレックスＧ‐６２４」が挙げられる。
下塗り用塗料は、樹脂成分（固形分）を８〜１７重量％含むことが好ましく、樹脂成分を１０〜１５重量％含むことがより好ましい。
The resin component of the undercoat paint is preferably used in the form of a synthetic resin emulsion obtained by polymerizing the resin into fine particles in water. Examples of the acrylic silicone resin emulsion include "Polydurex G-624" manufactured by Asahi Kasei Corporation.
The undercoat paint preferably contains a resin component (solid content) of 8 to 17% by weight, and more preferably contains a resin component of 10 to 15% by weight.
下塗り用塗料と後述する上塗り用塗料は同じ組成とすることができる。すなわち、後述する上塗り用塗料を下塗り用塗料として用いることができる。 The undercoat paint and the topcoat paint described later can have the same composition. That is, the topcoat paint described later can be used as the undercoat paint.
４．塗布方法など
被塗装面の表面に下塗り用塗料を塗布する方法は特に限定されない。例えば、吹き付け塗装やローラー塗装で塗布することができる。下塗り用塗料を塗布した後、塗料が乾燥しないうちに、コテなどを用いて表面を平滑に押えることが好ましい。下塗り用塗料を塗布などした後、乾燥させて成膜する。成膜後は、中一日程度の養生期間を設けることが好ましい。
以下、次工程の中塗り塗膜成膜工程について説明する。
4. Application method, etc. The method of applying the undercoat paint to the surface to be coated is not particularly limited. For example, it can be applied by spray coating or roller coating. After applying the undercoat paint, it is preferable to press the surface smoothly with a trowel or the like before the paint dries. After applying the undercoat paint, it is dried to form a film. After the film formation, it is preferable to provide a curing period of about one day.
Hereinafter, the intermediate coating film forming step of the next step will be described.
［中塗り塗膜成膜工程］
中塗り塗膜成膜工程は、前記下塗り塗膜成膜工程によって成膜された下塗り塗膜の表面に、中塗り用塗料を塗布して成膜する工程である。中塗り塗膜成膜工程では、骨材を比較的多く含んでおり、しかも、粒子径の大きな骨材を含有する中塗り用塗料を塗布することが好ましい。これによって、目地模様などの下地模様が表面に現れにくくなる。
[Intermediate coating film forming process]
The intermediate coating film forming step is a step of applying an intermediate coating coating film to the surface of the undercoat coating film formed by the undercoat coating film forming step. In the intermediate coating film forming step, it is preferable to apply an intermediate coating coating material containing a relatively large amount of aggregate and also containing an aggregate having a large particle size. As a result, the base pattern such as the joint pattern is less likely to appear on the surface.
１．顔料
中塗り用塗料は顔料を含むことが好ましい。顔料としては、下塗り用塗料と同様、特に限定されない。白色の中塗り用塗料とする場合には、白色顔料としての酸化チタンを用いる場合が多い。
1. 1. The pigment intermediate coating material preferably contains a pigment. The pigment is not particularly limited as in the undercoat paint. Titanium oxide as a white pigment is often used as a white intermediate coating paint.
２．骨材
また、中塗り用塗料は骨材を含む。骨材としては、下塗り用塗料と同様、特に限定されないが、炭酸カルシウムを用いることが好ましい。
2. Aggregate In addition, the paint for intermediate coating includes aggregate. The aggregate is not particularly limited as in the undercoat paint, but it is preferable to use calcium carbonate.
中塗り用塗料は、前述した下塗り用塗料や後述する上塗り用塗料よりも多くの骨材を含むことが好ましい。この条件のもと、中塗り用塗料は、骨材を５５〜７５重量％含むことが好ましく、骨材を６０〜７０重量％含むことがより好ましく、骨材を６２〜６８重量％含むことが最も好ましい。 The intermediate coating material preferably contains more aggregate than the above-mentioned undercoating paint and the above-mentioned topcoating paint. Under this condition, the intermediate coating paint preferably contains 55 to 75% by weight of aggregate, more preferably 60 to 70% by weight of aggregate, and 62 to 68% by weight of aggregate. Most preferred.
さらに、中塗り用塗料は、前述した下塗り用塗料や後述する上塗り用塗料よりも大きな粒子径の骨材を含有していることが好ましい。中塗り用塗料は、骨材のうち７００μｍ以上の大きな粒子径のものが、中塗り用塗料中の２．５〜７．５重量％を占めることが好ましい。
より詳細には、中塗り用塗料は、平均粒子径１８〜２６μｍの骨材を、３〜７重量％と、平均粒子径９０〜１３０μｍの骨材を、３〜７重量％と、平均粒子径２５０〜２９０μｍの骨材を、３０〜６０重量％と、平均粒子径６００〜８００μｍの骨材を、７〜１３重量％と、を含むことが好ましい。
Further, the intermediate coating paint preferably contains an aggregate having a larger particle size than the above-mentioned undercoating paint and the later-described topcoating paint. As for the intermediate coating paint, it is preferable that a large particle size of 700 μm or more accounts for 2.5 to 7.5% by weight of the intermediate coating paint.
More specifically, the intermediate coating paint has an average particle size of 3 to 7% by weight of an aggregate having an average particle size of 18 to 26 μm and an average particle size of 3 to 7% by weight of an aggregate having an average particle size of 90 to 130 μm. It is preferable to contain an aggregate of 250 to 290 μm in an amount of 30 to 60% by weight and an aggregate having an average particle size of 600 to 800 μm in an amount of 7 to 13% by weight.
なお、中塗り用塗料について、ベース塗料と現場配合骨材に分けて、上記骨材のうち一部又は全部を作業直前に配合するようにしてもよい。例えば、平均粒子径６００〜８００μｍの骨材と平均粒子径２５０〜２９０μｍの骨材の一部または全部を作業直前に配合するようにしてもよい。 The intermediate coating paint may be divided into a base paint and an on-site compounded aggregate, and a part or all of the above aggregate may be compounded immediately before the work. For example, an aggregate having an average particle diameter of 600 to 800 μm and a part or all of an aggregate having an average particle diameter of 250 to 290 μm may be blended immediately before the work.
３．樹脂成分
中塗り用塗料の樹脂成分も特に限定されないが、前記下塗り用塗料と同様、耐候性の面から、アクリルシリコーン系樹脂を用いることが好ましい。アクリルシリコーン樹脂やセラミック変性アクリルシリコーン樹脂は好適である。
3. 3. Resin component The resin component of the intermediate coating paint is not particularly limited, but it is preferable to use an acrylic silicone-based resin from the viewpoint of weather resistance as in the case of the undercoat coating. Acrylic silicone resin and ceramic modified acrylic silicone resin are suitable.
４．塗布方法など
中塗り用塗料の樹脂成分も、前記下塗り用塗料と同様、合成樹脂エマルションの形態で用いることが好ましい。
中塗り用塗料は、樹脂成分を６〜１３重量％含んでいることが好ましく、樹脂成分を７〜１２重量％含んでいることがより好ましく、樹脂成分を８〜１１重量％含んでいることが最も好ましい。
4. It is preferable that the resin component of the intermediate coating paint, such as the coating method, is also used in the form of a synthetic resin emulsion, similarly to the undercoating paint.
The intermediate coating paint preferably contains 6 to 13% by weight of the resin component, more preferably 7 to 12% by weight of the resin component, and preferably contains 8 to 11% by weight of the resin component. Most preferred.
前記下塗り塗膜成膜工程で成膜された下塗り塗膜の表面に中塗り用塗料を塗布する方法は特に限定されない。例えば、吹き付け塗装やローラー塗装で塗布することができる。中塗り用塗料を塗布した後、塗料が乾燥しないうちに、コテなどを用いて表面を平滑に押えることができる。中塗り用塗料を塗布などした後、乾燥させて成膜する。成膜後は、中二日程度の養生期間を設けることが好ましい。
以下、次工程の上塗り塗膜成膜工程について説明する。
The method of applying the intermediate coating paint to the surface of the undercoat coating film formed in the undercoat coating film forming step is not particularly limited. For example, it can be applied by spray coating or roller coating. After applying the intermediate coating paint, the surface can be pressed smoothly with a trowel or the like before the paint dries. After applying a paint for intermediate coating, it is dried to form a film. After the film formation, it is preferable to provide a curing period of about two days.
Hereinafter, the topcoat coating film forming step of the next step will be described.
［上塗り塗膜成膜工程］
上塗り塗膜成膜工程は、前記中塗り塗膜成膜工程によって成膜された中塗り塗膜の表面に、上塗り用塗料を塗布して成膜する工程である。
[Topcoat coating film formation process]
The topcoat coating film forming step is a step of applying a topcoat coating film to the surface of the intermediate coating film formed by the intermediate coating film forming step.
１．顔料
上塗り用塗料は顔料を含むことが好ましい。顔料としては、下塗り用塗料や中塗り用塗料と同様、特に限定されない。白色漆喰調の上塗り用塗料とする場合には、白色顔料としての酸化チタンを用いる場合が多い。
1. 1. The pigment topcoat coating preferably contains a pigment. The pigment is not particularly limited as in the case of the undercoat paint and the intermediate coat paint. Titanium oxide as a white pigment is often used as a white plaster-like topcoat paint.
２．骨材
また、上塗り用塗料は骨材を含む。骨材としては、下塗り用塗料や中塗り用塗料と同様、特に限定されないが、漆喰調の塗膜を形成するためには炭酸カルシウムを用いることが好ましい。
上塗り用塗料は、骨材を４５〜６５重量％含むことが好ましく、骨材を５０〜６０重量％含むことがより好ましく、骨材を５２〜５６重量％含むことが最も好ましい。
2. Aggregate The topcoat paint also contains aggregate. The aggregate is not particularly limited as in the case of the undercoat paint and the intermediate coat paint, but it is preferable to use calcium carbonate in order to form a plaster-like coating film.
The topcoat paint preferably contains 45 to 65% by weight of aggregate, more preferably 50 to 60% by weight of aggregate, and most preferably 52 to 56% by weight of aggregate.
３．樹脂成分
上塗り用塗料の樹脂成分も特に限定されないが、前記下塗り用塗料や前記中塗り用塗料と同様、耐候性の面から、アクリルシリコーン系樹脂を用いることが好ましい。アクリルシリコーン樹脂やセラミック変性アクリルシリコーン樹脂は好適である。
3. 3. Resin component The resin component of the top coat paint is not particularly limited, but it is preferable to use an acrylic silicone resin from the viewpoint of weather resistance as in the case of the undercoat paint and the intermediate coat paint. Acrylic silicone resin and ceramic modified acrylic silicone resin are suitable.
上塗り用塗料の樹脂成分も、前記下塗り用塗料や前記中塗り用塗料と同様、合成樹脂エマルションの形態で用いることが好ましい。
上塗り用塗料は、樹脂成分を８〜１７重量％含むことが好ましく、樹脂成分を１０〜１５重量％含むことがより好ましい。
The resin component of the topcoat paint is also preferably used in the form of a synthetic resin emulsion, like the undercoat paint and the intermediate coat paint.
The topcoat paint preferably contains 8 to 17% by weight of the resin component, and more preferably 10 to 15% by weight of the resin component.
前述した様に、上塗り用塗料と前記下塗り用塗料は同じ組成とすることができる。すなわち、上塗り用塗料を前記下塗り用塗料として用いることができる。 As described above, the top coat paint and the undercoat paint can have the same composition. That is, the topcoat paint can be used as the undercoat paint.
４．塗布方法など
前記中塗り塗膜成膜工程で成膜された中塗り塗膜の表面に上塗り用塗料を塗布する方法は特に限定されない。例えば、吹き付け塗装やローラー塗装で塗布することができる。上塗り用塗料を塗布などした後、塗料が乾燥しないうちに、コテなどを用いて表面を平滑に押えることが好ましい。上塗り用塗料を塗布した後、乾燥させて成膜する。
4. Coating method and the like The method of applying the topcoat coating film to the surface of the intermediate coating film formed in the intermediate coating film forming step is not particularly limited. For example, it can be applied by spray coating or roller coating. After applying the topcoat paint, it is preferable to use a trowel or the like to smoothly press the surface before the paint dries. After applying the topcoat paint, it is dried to form a film.
前記下塗り塗膜成膜工程と、前記中塗り塗膜成膜工程と、前記上塗り塗膜成膜工程と、を経て、外壁などの被塗装面の表面に積層塗膜が形成される。 A laminated coating film is formed on the surface of the surface to be coated such as an outer wall through the undercoat coating film forming step, the intermediate coating film forming step, and the topcoat coating film forming step.
以下、実施例をもって本発明を具体的に説明するが、本発明はこれらに限定されるものではない。実施例中、量比などは重量に基づく値である。 Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited thereto. In the examples, the quantity ratio and the like are values based on weight.
１. 上塗り用塗料、下塗り用塗料および中塗り用塗料の作成
下記表１の配合表に基づき、上塗り用塗料、下塗り用塗料および中塗り用塗料を作成した。エマルション樹脂としては、全ての塗料につて、アクリルシリコーン樹脂エマルション（旭化成株式会社製「ポリデュレックスＧ‐６２４」）、骨材としては炭酸カルシウムを用いた。
1. Preparation of topcoat paint, undercoat paint and intermediate coat paint Based on the composition table in Table 1 below, topcoat paint, undercoat paint and intermediate coat paint were prepared. As the emulsion resin, an acrylic silicone resin emulsion (“Polydulex G-624” manufactured by Asahi Kasei Co., Ltd.) was used for all the paints, and calcium carbonate was used as the aggregate.
骨材について、具体的には、上塗り用塗料および下塗り用塗料について、平均粒子径２２μｍの炭酸カルシウム（東洋ファインケミカル株式会社製 ホワイトンＨ）、平均粒子径１１０μｍの炭酸カルシウム（三共精粉株式会社 炭酸カルシウム粗目）、平均粒子径２７０μｍの炭酸カルシウム（三共精粉株式会社 粒状炭カルＫ１）、平均粒子径４００μｍの炭酸カルシウム（三共精粉株式会社 粒状炭カルＫ２）を用いた。
一方、中塗り用塗料については、平均粒子径２２μｍの炭酸カルシウム（東洋ファインケミカル株式会社製 ホワイトンＨ）、平均粒子径１１０μｍの炭酸カルシウム（三共精粉株式会社 炭酸カルシウム粗目）、平均粒子径２７０μｍの炭酸カルシウム（三共精粉株式会社 粒状炭カルＫ１）、平均粒子径７００μｍの炭酸カルシウム（三共精粉株式会社 粒状炭カルＫ３）を用いた。平均粒子径７００μｍの炭酸カルシウムについて１０重量％配合しており、このとき、７００μｍ以上の粒子径の炭酸カルシウムが概ね５重量％となる。
Regarding aggregates, specifically, for topcoat paints and undercoat paints, calcium carbonate with an average particle size of 22 μm (Whiteon H manufactured by Toyo Fine Chemicals Co., Ltd.) and calcium carbonate with an average particle size of 110 μm (Sankyo Seiko Co., Ltd. Carbonate) Calcium coarse), calcium carbonate having an average particle size of 270 μm (Sankyo Seiko Co., Ltd. Granular Coal Cal K1), and calcium carbonate having an average particle size of 400 μm (Sankyo Seiko Co., Ltd. Granular Coal Cal K2) were used.
On the other hand, for the paint for intermediate coating, calcium carbonate with an average particle size of 22 μm (Whiteon H manufactured by Toyo Fine Chemicals Co., Ltd.), calcium carbonate with an average particle size of 110 μm (calcium carbonate coarse with Sankyo Seiko Co., Ltd.), and an average particle size of 270 μm Calcium carbonate (Sankyo Seiko Co., Ltd. Granular Coal Cal K1) and calcium carbonate with an average particle diameter of 700 μm (Sankyo Seiko Co., Ltd. Granular Coal Cal K3) were used. 10% by weight of calcium carbonate having an average particle size of 700 μm is blended, and at this time, calcium carbonate having a particle size of 700 μm or more is approximately 5% by weight.
なお、本実施例では、表１に示すように、下塗り用塗料と上塗り用塗料を同じ組成とした。 In this embodiment, as shown in Table 1, the undercoat paint and the topcoat paint have the same composition.
また、本実施例では、中塗り用塗料について、ベース塗料と現場配合骨材に分けて、平均粒子径７００μｍの骨材の全てと、平均粒子径２７０μｍの骨材の概ね９割程度を現場配合骨材とし、作業直前にベース塗料に配合した（平均粒子径２７０μｍの骨材の一部（残部）については、予め、ベース塗料に配合しておいた）。 Further, in this embodiment, the intermediate coating paint is divided into the base paint and the on-site compounded aggregate, and all of the aggregate having an average particle size of 700 μm and about 90% of the aggregate having an average particle size of 270 μm are compounded on site. It was used as an aggregate and blended with the base paint immediately before the work (a part (remaining portion) of the aggregate having an average particle size of 270 μm was blended with the base paint in advance).
２. 被塗装面の準備
建物の外壁にＡＬＣパネルを張り、目地部分にシーリング材を充填して養生した後、さらに目地埋め材を充填してヘラで平面状に均した。その後、数日間養生して被塗装面とした。
2. Preparation of the surface to be painted ALC panel was put on the outer wall of the building, and the joint part was filled with a sealing material to cure it, and then the joint filling material was further filled and leveled flat with a spatula. After that, it was cured for several days to prepare the surface to be painted.
３. 積層塗膜の形成
この被塗装面に、前記下塗り用塗料（上塗り用塗料と同一組成）を、スタッコガン（口径８ｍｍ）を用いて吹き付け塗装した。塗布量は、概ね１．５Ｋｇ／ｍ２とした。塗装後、塗料が乾燥しないうちに、ステンレス製のコテを用いて表面を平滑に押えた。その後、乾燥させて成膜し、中一日程度の養生期間を設けて下塗り塗膜を得た。
3. Formation of Laminated Coating Film The surface to be coated was spray-coated with the undercoat paint (same composition as the topcoat paint) using a stacco gun (diameter 8 mm). The coating amount was approximately 1.5 kg / m 2 . After painting, the surface was pressed smoothly with a stainless steel iron before the paint dried. Then, it was dried to form a film, and a curing period of about one day was provided to obtain an undercoat coating film.
次に、前記下塗り塗膜の表面に前記中塗り用塗料を、タイルガン（口径６．５ｍｍ）を用いて吹き付け塗装した。塗布量は、概ね１．５Ｋｇ／ｍ２とした。塗装後、塗料が乾燥しないうちに、ステンレス製のコテを用いて表面を平滑に押えた。その後、乾燥させて成膜し、中二日程度の養生期間を設けて中塗り塗膜を得た。 Next, the intermediate coating paint was spray-coated on the surface of the undercoat coating film using a tile gun (diameter 6.5 mm). The coating amount was approximately 1.5 kg / m 2 . After painting, the surface was pressed smoothly with a stainless steel iron before the paint dried. Then, it was dried to form a film, and a curing period of about two days was provided to obtain an intermediate coating film.
最後に、前記中塗り塗膜の表面に前記上塗り用塗料を、スタッコガン（口径８ｍｍ）を用いて吹き付け塗装した。塗布量は、概ね１．５Ｋｇ／ｍ２とした。塗装後、塗料が乾燥しないうちに、コテを用いて表面を平滑に押えた。その後、乾燥させて成膜し、下塗り塗膜、中塗り塗膜および上塗り塗膜からなる積層塗膜を得た。 Finally, the topcoat paint was spray-coated on the surface of the intermediate coating film using a stacco gun (diameter 8 mm). The coating amount was approximately 1.5 kg / m 2 . After painting, the surface was pressed smoothly with a trowel before the paint dried. Then, it was dried to form a film, and a laminated coating film composed of an undercoat coating film, an intermediate coating film and a topcoat coating film was obtained.
上記実施例の積層塗膜について、意匠性、下地隠蔽性、および耐候性を評価した。意匠性、下地隠蔽性は、塗装後の塗装物から３〜５ｍ離れて、５〜１０人で目視確認して評価した。 The laminated coating film of the above example was evaluated for designability, base hiding property, and weather resistance. The design property and the base hiding property were evaluated by visually confirming them by 5 to 10 people at a distance of 3 to 5 m from the painted object after painting.
具体的には、評価者の８割以上が良好と判断した場合を○、５割以上８割未満が良好と判断した場合を△、２割以上５割未満が良好と判断した場合を△〜×、２割未満が良好と判断した場合を×と評価した。 Specifically, the case where 80% or more of the evaluators are judged to be good is ○, the case where 50% or more and less than 80% is judged to be good is △, and the case where 20% or more and less than 50% is judged to be good is △ ~ X was evaluated as x when less than 20% was judged to be good.
また、耐候性については、ＪＩＳ Ｋ５６００−７−７に基づくキセノンウエザーメーター２５００時間照射後の色差（ΔＥ）評価で、ΔＥ≦３のものを○、３＜ΔＥ≦５を△、５＜ΔＥを×と評価した。 Regarding the weather resistance, in the color difference (ΔE) evaluation after irradiating the xenon weather meter for 2500 hours based on JIS K5600-7-7, those with ΔE ≦ 3 were evaluated as ○, 3 <ΔE ≦ 5 were evaluated as Δ, and 5 <ΔE. It was evaluated as ×.
実施例１は、意匠性、下地隠蔽性、および耐候性の全てにおいて、非常に良好な結果が得られた。 In Example 1, very good results were obtained in all of the design property, the base hiding property, and the weather resistance.
比較例１は、実施例１において、中塗り用塗料を塗布していない（下塗り用塗料と上塗り用塗料のみを塗布した）例であり、下地隠蔽性が劣る結果となった。 Comparative Example 1 is an example in which the intermediate coating paint was not applied (only the undercoating paint and the topcoating paint were applied) in Example 1, and the result was that the base hiding property was inferior.
比較例２は、実施例１において、中塗り塗膜を上塗り用塗料で形成した例であり、下地隠蔽性が劣る結果となった。 Comparative Example 2 is an example in which the intermediate coating film was formed with the top coating paint in Example 1, and the result was that the base hiding property was inferior.
比較例３は、実施例１において、上塗り用塗料を塗布していない例であり、意匠性、耐候性に劣る結果となった。 Comparative Example 3 is an example in which the topcoat paint was not applied in Example 1, and the result was that the design and weather resistance were inferior.
以上、特定の実施形態及び実施例を参照して本発明を説明したが、本発明は上記実施形態などに限定されるものではなく、当該技術分野における熟練者等により、本出願の願書に添付された特許請求の範囲から逸脱することなく、種々の変更及び修正が可能である。 Although the present invention has been described above with reference to specific embodiments and examples, the present invention is not limited to the above-described embodiments and the like, and is attached to the application of the present application by an expert or the like in the technical field. Various changes and amendments can be made without departing from the scope of the claims made.
Claims (11)
この下塗り塗膜成膜工程によって成膜された下塗り塗膜の表面に、中塗り用塗料を塗布して成膜する中塗り塗膜成膜工程と、
この中塗り塗膜成膜工程によって成膜された中塗り塗膜の表面に、上塗り用塗料を塗布して成膜する上塗り塗膜成膜工程と、を備えており、
前記下塗り用塗料、前記中塗り用塗料および前記上塗り用塗料は、それぞれ骨材を含み、
前記中塗り用塗料は、前記下塗り用塗料および前記上塗り用塗料のうち、より多くの骨材を含む塗料と、同量以上の骨材を含んでいる、あるいは、
前記中塗り用塗料の骨材は、前記下塗り用塗料および前記上塗り用塗料のうち、より大きな粒子径の骨材を含む塗料に含まれる最も大きな粒子径の骨材と、同径以上の粒子径の骨材を含有している、
積層塗膜の形成方法。
An undercoat coating film forming process in which an undercoat paint is applied to the surface of the surface to be coated such as an outer wall to form a film.
An intermediate coating film forming step of applying an intermediate coating paint to the surface of the undercoat coating film formed by this undercoat coating film forming step and forming a film.
It is provided with a topcoat coating film forming step of applying a topcoat paint to form a film on the surface of the intermediate coating film formed by this intermediate coating film forming step.
The undercoat paint, the intermediate coat paint, and the topcoat paint each contain an aggregate.
The intermediate coating paint contains, or contains, the same amount or more of the aggregate as the paint containing more aggregate among the undercoat paint and the topcoat paint.
The aggregate of the intermediate coating paint has a particle size equal to or larger than that of the largest particle size aggregate contained in the paint containing the aggregate having a larger particle size among the undercoating paint and the top coating paint. Contains aggregates of
Method for forming a laminated coating film.
この下塗り塗膜成膜工程によって成膜された下塗り塗膜の表面に、中塗り用塗料を塗布して成膜する中塗り塗膜成膜工程と、
この中塗り塗膜成膜工程によって成膜された中塗り塗膜の表面に、上塗り用塗料を塗布して成膜する上塗り塗膜成膜工程と、を備えており、
前記下塗り用塗料、前記中塗り用塗料および前記上塗り用塗料は、それぞれ骨材を含み、
前記中塗り用塗料は、前記下塗り用塗料および前記上塗り用塗料よりも多くの骨材を含むとともに、前記中塗り用塗料の骨材は、前記下塗り用塗料の骨材および前記上塗り用塗料の骨材よりも大きな粒子径の骨材を含有している、
積層塗膜の形成方法。
An undercoat coating film forming process in which an undercoat paint is applied to the surface of the surface to be coated such as an outer wall to form a film.
An intermediate coating film forming step of applying an intermediate coating paint to the surface of the undercoat coating film formed by this undercoat coating film forming step and forming a film.
It is provided with a topcoat coating film forming step of applying a topcoat paint to form a film on the surface of the intermediate coating film formed by this intermediate coating film forming step.
The undercoat paint, the intermediate coat paint, and the topcoat paint each contain an aggregate.
The intermediate coating paint contains more aggregate than the undercoat paint and the topcoat paint, and the aggregate of the intermediate coat is the aggregate of the undercoat paint and the bone of the topcoat paint. Contains aggregate with a larger particle size than the material,
Method for forming a laminated coating film.
請求項１又は２に記載の積層塗膜の形成方法。
The aggregate contained in the undercoat paint, the intermediate coat paint and the top coat paint is calcium carbonate.
The method for forming a laminated coating film according to claim 1 or 2.
樹脂成分を８〜１７重量％と、
骨材を４５〜６５重量％と、を含んでいる、
請求項１〜３のいずれか１項に記載の積層塗膜の形成方法。
Topcoat paint
The resin component is 8 to 17% by weight,
Contains 45-65% by weight of aggregate,
The method for forming a laminated coating film according to any one of claims 1 to 3.
樹脂成分を６〜１３重量％と、
骨材を５５〜７５重量％と、を含んでおり、
骨材のうち７００μｍ以上の粒子径のものが２．５〜７．５重量％を占める、
請求項１〜４のいずれか１項に記載の積層塗膜の形成方法。
The paint for intermediate coating is
Resin component is 6 to 13% by weight,
It contains 55 to 75% by weight of aggregate.
Of the aggregates, those with a particle size of 700 μm or more account for 2.5 to 7.5% by weight.
The method for forming a laminated coating film according to any one of claims 1 to 4.
樹脂成分を６〜１３重量％と、
平均粒子径１８〜２６μｍの骨材を、３〜７重量％と、
平均粒子径９０〜１３０μｍの骨材を、３〜７重量％と、
平均粒子径２５０〜２９０μｍの骨材を、３０〜６０重量％と、
平均粒子径６００〜８００μｍの骨材を、７〜１３重量％と、を含んでいる、
請求項１〜５のいずれか１項に記載の積層塗膜の形成方法。
The paint for intermediate coating is
Resin component is 6 to 13% by weight,
Aggregate with an average particle size of 18 to 26 μm was added to 3 to 7% by weight.
Aggregate with an average particle size of 90 to 130 μm was added to 3 to 7% by weight.
Aggregate with an average particle size of 250 to 290 μm was added to 30 to 60% by weight.
It contains 7 to 13% by weight of aggregate having an average particle size of 600 to 800 μm.
The method for forming a laminated coating film according to any one of claims 1 to 5.
請求項１〜６のいずれか１項に記載の積層塗膜の形成方法。
The undercoat paint and the topcoat paint have the same composition,
The method for forming a laminated coating film according to any one of claims 1 to 6.
隣り合う複数枚のパネルと、
前記隣り合う複数枚のパネルの隙間に充填されたシーリング材からなる目地部と、を有している、
請求項１〜７のいずれか１項に記載の積層塗膜の形成方法。
The surface to be painted is
With multiple adjacent panels
It has a joint portion made of a sealing material filled in a gap between a plurality of adjacent panels.
The method for forming a laminated coating film according to any one of claims 1 to 7.
樹脂成分を６〜１３重量％と、
骨材を５５〜７５重量％と、を含み、
骨材のうち７００μｍ以上の粒子径のものが２．５〜７．５重量％を占める、
中塗り用塗料。
An intermediate coating paint used in the method for forming a laminated coating film according to any one of claims 1 to 8.
Resin component is 6 to 13% by weight,
Contains 55-75% by weight of aggregate,
Of the aggregates, those with a particle size of 700 μm or more account for 2.5 to 7.5% by weight.
Paint for intermediate coating.
樹脂成分を６〜１３重量％と、
平均粒子径１８〜２６μｍの骨材を、３〜７重量％と、
平均粒子径９０〜１３０μｍの骨材を、３〜７重量％と、
平均粒子径２５０〜２９０μｍの骨材を、３０〜６０重量％と、
平均粒子径６００〜８００μｍの骨材を、７〜１３重量％と、を含んでいる、
中塗り用塗料。
An intermediate coating paint used in the method for forming a laminated coating film according to any one of claims 1 to 8.
Resin component is 6 to 13% by weight,
Aggregate with an average particle size of 18 to 26 μm was added to 3 to 7% by weight.
Aggregate with an average particle size of 90 to 130 μm was added to 3 to 7% by weight.
Aggregate with an average particle size of 250 to 290 μm was added to 30 to 60% by weight.
It contains 7 to 13% by weight of aggregate having an average particle size of 600 to 800 μm.
Paint for intermediate coating.
この下塗り塗膜の表面に、中塗り用塗料を塗布して成膜した中塗り塗膜と、
この中塗り塗膜の表面に、上塗り用塗料を塗布して成膜した上塗り塗膜と、を備えており、
前記下塗り用塗料、前記中塗り用塗料および前記上塗り用塗料は、それぞれ骨材を含み、
前記中塗り用塗料は、前記下塗り用塗料および前記上塗り用塗料のうち、より多くの骨材を含む塗料と、同量以上の骨材を含んでいる、あるいは、
前記中塗り用塗料の骨材は、前記下塗り用塗料および前記上塗り用塗料のうち、より大きな粒子径の骨材を含む塗料に含まれる最も大きな粒子径の骨材と、同径以上の粒子径の骨材を含有している、
外壁構造。 An undercoat coating film formed by applying an undercoat paint to the surface of the surface to be coated on the outer wall,
An intermediate coating film formed by applying an intermediate coating paint to the surface of this undercoat coating film and
The surface of the intermediate coating film is provided with a top coating coating film formed by applying a top coating paint.
The undercoat paint, the intermediate coat paint, and the topcoat paint each contain an aggregate.
The intermediate coating paint contains, or contains, the same amount or more of the aggregate as the paint containing more aggregate among the undercoat paint and the topcoat paint.
The aggregate of the intermediate coating paint has a particle size equal to or larger than that of the largest particle size aggregate contained in the paint containing the aggregate having a larger particle size among the undercoating paint and the top coating paint. Contains aggregates of
Outer wall structure.
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