JP6100432B1 - Removable adhesive for floor and floor finishing method using the same - Google Patents

Removable adhesive for floor and floor finishing method using the same Download PDF

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JP6100432B1
JP6100432B1 JP2016179435A JP2016179435A JP6100432B1 JP 6100432 B1 JP6100432 B1 JP 6100432B1 JP 2016179435 A JP2016179435 A JP 2016179435A JP 2016179435 A JP2016179435 A JP 2016179435A JP 6100432 B1 JP6100432 B1 JP 6100432B1
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adhesive
floor
parts
mass
flooring
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JP2018044059A (en
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木村　光一
光一 木村
康三 遠藤
康三 遠藤
嵩大 小島
嵩大 小島
さおり 板橋
さおり 板橋
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Koyo Sangyo Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J1/00—Adhesives based on inorganic constituents
    • C09J1/02—Adhesives based on inorganic constituents containing water-soluble alkali silicates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/16—Flooring, e.g. parquet on flexible web, laid as flexible webs; Webs specially adapted for use as flooring; Parquet on flexible web

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Floor Finish (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

【課題】オープンタイムを確保することなく、コンクリート製の床下地表面に接着剤を塗布した後直ぐにプラスチック系床材を貼着することができ、また、接着剤の硬化速度を所望の速度に設定できる。更に、床材を再剥離する際は容易に剥がすことができ、防汚性にも優れた床材用再剥離型接着剤及びこれを用いた床仕上げ材の施工方法を提供する。【解決手段】コンクリート製の床下地１１表面にプラスチック系床材１２を貼着するために用いられる床用再剥離型接着剤は、水ガラスと高炉水砕スラグとを含有する。また、高炉水砕スラグを水ガラス１００質量部に対して３質量部以上３０質量部以下の割合で含む。更に、水性エマルジョン樹脂又は充填剤のいずれか一方又は双方を更に含有することが好ましい。【選択図】なし[PROBLEMS] To apply a plastic flooring immediately after applying an adhesive to a concrete floor foundation surface without securing an open time, and to set the curing speed of the adhesive to a desired speed. it can. Furthermore, the present invention provides a floor-removable adhesive that can be easily peeled off when the flooring is peeled off and has excellent antifouling properties, and a method for constructing a floor finish using the same. A floor releasable adhesive used for adhering a plastic flooring 12 to the surface of a concrete floor base 11 contains water glass and blast furnace granulated slag. Moreover, blast furnace granulated slag is included in the ratio of 3 to 30 mass parts with respect to 100 mass parts of water glass. Furthermore, it is preferable to further contain either or both of an aqueous emulsion resin and a filler. [Selection figure] None

Description

本発明は、コンクリート製の床下地表面にプラスチック系床材を貼着するために用いられる床用再剥離型接着剤と、この接着剤を用いた床仕上げ方法に関するものである。   The present invention relates to a floor re-peelable adhesive used for adhering a plastic floor material to a concrete floor base surface, and a floor finishing method using the adhesive.

従来より、商業施設をはじめとする各種施設から一般住宅までの床材の幅広い用途に、置敷き型プラスチック系床タイルが施工されている。このプラスチック系床タイルには、ポリ塩化ビニル樹脂製タイル（いわゆるＰタイル）、タイルカーペット（縦５０ｃｍ×横５０ｃｍ等）やプラスチック系長尺床タイル（幅１５ｃｍ×長さ９００ｃｍ等）などがある。これらのプラスチック系床タイルは、既存の床の上にそれらを貼着して、簡易リフォーム、模様替え、そして広告等の目的で使用される。リフォームの際に補修が必要なとき、全面貼り替えは不要で、補修を必要とする箇所のタイルを剥離して新しいタイルに交換するような部分貼替工法が採用されている。   Conventionally, floor-laying plastic floor tiles have been installed for a wide range of flooring applications from various facilities including commercial facilities to general houses. Such plastic floor tiles include tiles made of polyvinyl chloride resin (so-called P tiles), tile carpets (length 50 cm × width 50 cm, etc.), plastic long floor tiles (width 15 cm × length 900 cm, etc.), and the like. These plastic floor tiles are used for purposes such as simple remodeling, remodeling, and advertising by sticking them on an existing floor. When repair is required during renovation, it is not necessary to replace the entire surface, and a partial replacement method is adopted in which the tile at the location requiring repair is peeled off and replaced with a new tile.

一般的にプラスチック系床タイルを既存の床に施工する場合には、ピールアップボンドと呼ばれる再剥離型接着剤が用いられている。従来の再剥離型接着剤は、施工時に十分なオープンタイム、即ち床下地表面に接着剤を塗布してから床タイルを貼着するまでの時間が必要であるため、作業効率が悪く、オープンタイムが不十分であると、接着剤の接着力が強くなり過ぎて、床タイルの再剥離時に床タイルのバッキング材が破壊するおそれがあった。また、ピールアップボンドは、床下地面等の被接着面から除去することが困難であり、特に、アクリル系樹脂をバインダーとするピールアップボンドはこれが顕著である。貼り替え後の床材の十分な接着性と安定性を確保するためには接着剤を完璧に除去する必要があり、このようなピールアップボンドの糊残りを除去するために、従来、強アルカリ性の組成物等からなるワックス用剥離剤や種々の溶剤等からなる接着剤除去剤を除去対象のピールアップボンド表面に塗布又は散布し、更に作業者がブラシ、ヘラ、又はスクレーパーを用いてポリッシング等することにより上記ピールアップボンドの糊残りを除去する手段が用いられている。   In general, when a plastic floor tile is applied to an existing floor, a re-peelable adhesive called a peel-up bond is used. Conventional re-peelable adhesives require a sufficient open time at the time of construction, that is, a time from application of the adhesive to the surface of the floor substrate to the pasting of the floor tiles. If the adhesive is insufficient, the adhesive strength of the adhesive becomes too strong, and the floor tile backing material may be destroyed when the floor tile is peeled again. In addition, it is difficult to remove the peel-up bond from the adherend surface such as a floor base surface, and this is particularly noticeable for the peel-up bond using an acrylic resin as a binder. In order to ensure sufficient adhesion and stability of the flooring after replacement, it is necessary to completely remove the adhesive. Conventionally, in order to remove the adhesive residue of such peel-up bond, strong alkaline Apply or disperse an adhesive remover consisting of a wax release agent and various solvents, etc., on the surface of the peel-up bond to be removed, and further polishing by a worker using a brush, spatula, or scraper, etc. Thus, means for removing the adhesive residue of the peel-up bond is used.

再剥離型接着剤としては、水性接着剤組成物と、再剥離性粘着剤組成物と、天然系樹脂又は石油系樹脂のいずれか一方又は双方の水性分散液とからなる床材用接着剤が開示されている（例えば、特許文献１参照。）。この床材用接着剤では、水性接着剤組成物が、合成樹脂系、天然ゴム系、合成ゴム系等の接着剤組成物の単独又は混合物からなり、不揮発分換算で１００質量部含む。また、再剥離性粘着剤組成物は、炭素数４〜１２のアルキル基を有する（メタ）アクリル酸アルキルエステル７０〜９９．９質量％と、α，β−不飽和カルボン酸０．１〜１０質量％と、上記（メタ）アクリル酸アルキルエステル及びα，β−不飽和カルボン酸以外のビニル化合物０〜２９．９質量％とからなる単量体成分をポリビニルアルコール不完全ケン化物の保護コロイドの存在下に水性懸濁重合することによって得られた粘着性重合体微細球を含有してなり、不揮発分換算で１０〜１００質量部含む。更に、上記天然系樹脂又は石油系樹脂のいずれか一方又は双方の水性分散液は、不揮発分換算で３〜１００質量部含む。   As the re-peelable adhesive, there is an adhesive for flooring composed of an aqueous adhesive composition, a re-peelable pressure-sensitive adhesive composition, and an aqueous dispersion of either or both of a natural resin and a petroleum resin. (For example, refer to Patent Document 1). In this adhesive for flooring, the aqueous adhesive composition is composed of an adhesive composition such as a synthetic resin, natural rubber, or synthetic rubber alone or in a mixture, and contains 100 parts by mass in terms of nonvolatile content. Moreover, the releasable pressure-sensitive adhesive composition has 70 to 99.9% by mass of (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms and 0.1 to 10 α, β-unsaturated carboxylic acid. And a monomer component composed of 0% to 29.9% by weight of a vinyl compound other than the above (meth) acrylic acid alkyl ester and α, β-unsaturated carboxylic acid. It contains adhesive polymer microspheres obtained by aqueous suspension polymerization in the presence of 10 to 100 parts by mass in terms of nonvolatile content. Furthermore, the aqueous dispersion of either one or both of the natural resin and petroleum resin contains 3 to 100 parts by mass in terms of nonvolatile content.

このように構成された床材用接着剤では、粘着性重合体微細球は弾性に富んでいるので、荷重が掛かると変形して偏平な形状になり、被着体との接着面積が増して粘着強度が上がる。一方、荷重を取り除くと元の球状体に戻るので、一定の力を掛けただけで容易に剥がれる物性が得られる。このため、再剥離性とずれ防止性が得られ、床材用接着剤として極めて利用価値が高い。また、上記床材用接着剤を床下地表面に塗工した後に、オープンタイムを考慮することなく良好な再剥離性が得られる。   In the adhesive for flooring constructed in this way, the adhesive polymer microspheres are rich in elasticity, so that when a load is applied, they deform and become flat, increasing the adhesion area with the adherend. Increases adhesive strength. On the other hand, when the load is removed, it returns to the original spherical body, so that physical properties that can be easily peeled off by applying a certain force can be obtained. For this reason, removability and slippage prevention are obtained, and the utility value is extremely high as an adhesive for flooring. In addition, after applying the floor adhesive to the floor base surface, good removability can be obtained without considering open time.

また、別の再剥離型接着剤としては、ポリオールとポリイソシアネート化合物から反応して得られる活性イソシアネート基を有するウレタンプレポリマーと中空フィラーを必須成分とし、ウレタンプレポリマー１００質量部に対し、充填剤３００〜１０００質量部含有し、充填剤中の中空フィラーの質量％が２０〜１００である再剥離可能な一液湿気硬化型ウレタン接着剤組成物が開示されている（例えば、特許文献２参照。）   Further, as another re-peelable adhesive, a urethane prepolymer having an active isocyanate group obtained by reaction from a polyol and a polyisocyanate compound and a hollow filler are essential components, and the filler is used with respect to 100 parts by mass of the urethane prepolymer. A re-peelable one-component moisture-curing urethane adhesive composition containing 300 to 1000 parts by mass and containing 20 to 100% by mass of the hollow filler in the filler is disclosed (for example, see Patent Document 2). )

このように構成されたウレタン接着剤を使用して床下地表面にフローリング材を直貼り施工するときは、先ず、床下地表面に接着剤を広げ、クシゴテ等を用いて均一に塗布する。次に、フローリング材を貼合せ、ズラシ作業により位置決めを行う。上記ウレタン接着剤は、ウレタンプレポリマー１００質量部に対する充填剤の含有割合を３００〜１０００質量部にしたので、従来の接着剤工法を使用しつつ、床の貼り直しや廃棄の際に、床材の材料破壊でなく、接着剤の凝集破壊で再剥離できる。また、床下地表面に残った接着剤もケレン等で簡単に削除することができ、床下地表面の再施工等を必要としない。更に、充填剤に中空フィラーを併用することで、比重を従来の接着剤と同等にすることができる。   When the flooring material is directly attached to the floor base surface using the urethane adhesive configured as described above, first, the adhesive is spread on the floor base surface and uniformly applied using a squeegee or the like. Next, a flooring material is bonded and positioning is performed by a sliding operation. Since the urethane adhesive has a filler content of 300 to 1000 parts by mass with respect to 100 parts by mass of the urethane prepolymer, the flooring material can be used when the floor is reattached or discarded while using the conventional adhesive method. Re-peeling can be achieved by cohesive failure of the adhesive instead of the material destruction. Also, the adhesive remaining on the floor base surface can be easily removed with kelen or the like, and re-installation of the floor base surface is not required. Furthermore, specific gravity can be made equivalent to the conventional adhesive agent by using a hollow filler together with a filler.

特公平０７−７６３３３号公報（請求項１、第５欄第１４行〜同欄第２４行、第６欄第４８行〜同欄第５０行）Japanese Examined Patent Publication No. 07-76333 (Claim 1, column 5 line 14 to column 24 line, column 6 line 48 to column 50) 特開２００４−３０７７８８号公報（請求項１、段落［００１６］、［００１７］）JP 2004-307788 A (Claim 1, paragraphs [0016] and [0017])

しかし、上記従来の特許文献１に示された床材用接着剤では、この床材用接着剤を床下地表面に塗工した後に、オープンタイムを確保せずに、直ぐに被着体を貼着すると、再剥離時に接着剤が床タイルに付着してしまうという問題点があった。また、オープンタイムを確保して施工した場合は、接着剤にタック（ベタつき）が生じてから床材を施工するため、ずらし作業による位置調整が困難である。更に、オープンタイムを確保して施工した場合は、再剥離時に床タイルに接着剤の付着はないものの、床面等の被接着面にベタつきのある接着剤が付着し、この接着剤を除去するのは苦労を要する作業となる。一方、上記従来の特許文献２に示されたウレタン接着剤組成物では、オープンタイムを確保する必要がなく、ずらし作業性も良好であるが、接着剤が硬化するのに時間がかかるため、通常３日程度と長時間の養生期間が必要であった。   However, in the adhesive for floor materials shown in the above-mentioned conventional patent document 1, after applying the adhesive for floor materials to the floor base surface, the adherend is immediately pasted without securing the open time. Then, there existed a problem that an adhesive agent adhered to a floor tile at the time of re-peeling. In addition, when construction is performed with an open time secured, the floor material is constructed after the adhesive has been tacked (sticky), so that it is difficult to adjust the position by shifting work. Furthermore, when construction is performed with an open time secured, no adhesive adheres to the floor tile during re-peeling, but a sticky adhesive adheres to the adherend surface such as the floor surface, and this adhesive is removed. This is a laborious task. On the other hand, in the urethane adhesive composition disclosed in the above-mentioned conventional Patent Document 2, it is not necessary to ensure an open time and the shifting workability is good, but it takes time for the adhesive to harden. A long curing period of about 3 days was required.

本発明の第１の目的は、オープンタイムを確保することなく、コンクリート製の床下地表面に接着剤を塗布した後直ぐにプラスチック系床材を貼着でき、接着剤が完全に硬化した後は優れた密着性能を示し、更に床材を再剥離する際は容易に剥がせるとともに、再剥離後の床下地の防汚性にも優れた、床用再剥離型接着剤及びこれを用いた床仕上げ方法を提供することにある。本発明の第２の目的は、十分な接着力を得ることができ、かつ接着剤の硬化速度を所望の速度に設定できる、床用再剥離型接着剤及びこれを用いた床仕上げ方法を提供することにある。本発明の第３の目的は、接着剤が硬化し収縮することを抑制でき、硬化に伴うひび割れ等を防止でき、また接着剤の塗布性を向上できる、床用再剥離型接着剤及びこれを用いた床仕上げ方法を提供することにある。   The first object of the present invention is that a plastic flooring can be applied immediately after applying an adhesive to a concrete floor foundation surface without securing an open time, and it is excellent after the adhesive is completely cured. Removable adhesive for floors and floor finish using this, which shows excellent adhesion performance and can be easily removed when re-peeling the flooring material, and also has excellent antifouling properties of the floor substrate after re-peeling It is to provide a method. A second object of the present invention is to provide a floor re-peelable adhesive and a floor finishing method using the same, which can obtain a sufficient adhesive force and can set the curing speed of the adhesive to a desired speed. There is to do. A third object of the present invention is to provide a floor re-peelable adhesive capable of suppressing the curing and shrinking of the adhesive, preventing cracks associated with the curing, and improving the applicability of the adhesive. It is to provide a floor finishing method used.

本発明の第１の観点は、水ガラスと高炉水砕スラグとを含有し、コンクリート製の床下地表面にプラスチック系床材を貼着するために用いられる床用再剥離型接着剤であって、高炉水砕スラグを水ガラス１００質量部に対して３質量部以上３０質量部以下の割合で含むことを特徴とする。   A first aspect of the present invention is a floor releasable adhesive that contains water glass and blast furnace granulated slag, and is used to adhere a plastic flooring to a concrete floor base surface. The blast furnace granulated slag is contained in a proportion of 3 parts by mass or more and 30 parts by mass or less with respect to 100 parts by mass of water glass.

本発明の第２の観点は、第１の観点に基づく発明であって、更に水性エマルジョン樹脂又は充填剤のいずれか一方又は双方を更に含有することを特徴とする。   A second aspect of the present invention is an invention based on the first aspect, and is characterized by further containing either or both of an aqueous emulsion resin and a filler.

本発明の第３の観点は、コンクリート製の床下地表面に、接着剤を塗布して塗布層を形成し、この塗布層の表面にプラスチック系床材を貼着することにより、床材を床下地表面に塗布層を介して施工する床仕上げ方法において、上記接着剤が第１又は第２の観点に記載の床用再剥離型接着剤であり、この床用再剥離型接着剤を床下地表面に塗布して塗布層を形成した後、塗布層の乾燥度又は硬化度が６０％以下の状態で、プラスチック系床材を塗布層の表面に貼着することを特徴とする床仕上げ方法である。   According to a third aspect of the present invention, an adhesive is applied to a concrete floor base surface to form a coating layer, and a plastic flooring is adhered to the surface of the coating layer, whereby the floor material is placed under the floor. In a floor finishing method for constructing a ground surface through an application layer, the adhesive is the floor releasable adhesive described in the first or second aspect, and the floor releasable adhesive is used as a floor foundation. A floor finishing method characterized in that after a coating layer is formed by coating on the surface, a plastic flooring is adhered to the surface of the coating layer in a state where the drying or curing degree of the coating layer is 60% or less. is there.

本発明の第１の観点の床用再剥離型接着剤は、オープンタイムを確保することなく、コンクリート製の床下地表面に接着剤を塗布した後直ぐにプラスチック系床材を貼着できるため、作業性に優れている。一般的なピールアップボンドは、塗工してからタック（ベタつき）が生じるまで２０〜６０分程度のオープンタイムを必要とし、特に気温の低い冬場ほどオープンタイムは長時間となるが、本発明の床用再剥離型接着剤は、冬場の作業環境でもオープンタイムを確保することなく、塗布した後すぐに床材を貼着できる。また、床材を貼着する際、本発明の床用再剥離型接着剤は、一般的なピールアップボンドと異なりタックが少ないため、ずらし作業による位置調整が容易にできる。また、高炉水砕スラグを水ガラス１００質量部に対して３質量部以上３０質量部以下の割合で含むので、接着剤の十分な接着力が得られるとともに、接着剤の硬化速度を所望の速度に設定できる。更に、床材を再剥離する際は容易に剥がすことができ、プラスチック系床材裏面への接着剤の付着がなく、被着体となる床下地に残った接着剤はベタつきがなく、ケレン等で簡単に除去することができ、防汚性に優れる。   The floor re-peelable adhesive according to the first aspect of the present invention is capable of adhering a plastic flooring immediately after applying an adhesive to a concrete floor foundation surface without securing an open time. Excellent in properties. A general peel-up bond requires an open time of about 20 to 60 minutes from the coating to the occurrence of tack (stickiness), and the open time becomes longer in winter especially when the temperature is low. Floor re-peelable adhesive can be applied immediately after application without securing open time even in winter work environment. Moreover, when sticking a flooring, the floor re-peelable adhesive of the present invention has less tack unlike a general peel-up bond, so that the position can be easily adjusted by shifting work. Moreover, since granulated blast furnace slag is contained in a proportion of 3 parts by mass or more and 30 parts by mass or less with respect to 100 parts by mass of water glass, sufficient adhesive strength of the adhesive can be obtained, and the curing rate of the adhesive can be set to a desired rate. Can be set. In addition, when the flooring is peeled off again, it can be easily peeled off, there is no adhesion of the adhesive to the back of the plastic flooring, and the adhesive remaining on the floor base that is the adherend has no stickiness, such as kelen Can be easily removed, and has excellent antifouling properties.

本発明の第２の観点の床用再剥離型接着剤では、水性エマルジョン樹脂を更に含有すれば、接着剤とプラスチック系床材との密着性が向上する。また、充填剤を更に含有すれば、接着剤の床下地表面への塗布性を向上できるとともに、接着剤が硬化する際の体積収縮を抑制でき、硬化に伴うひび割れ等を防止できる。   If the floor re-peelable adhesive according to the second aspect of the present invention further contains an aqueous emulsion resin, the adhesion between the adhesive and the plastic flooring is improved. Further, if the filler is further contained, the coating property of the adhesive to the floor base surface can be improved, the volume shrinkage when the adhesive is cured can be suppressed, and the cracks accompanying the curing can be prevented.

本発明の第３の観点の床仕上げ方法では、コンクリート製の床下地表面に、第１又は第２の観点の床用再剥離型接着剤を塗布して塗布層を形成し、オープンタイムを確保することなく、この塗布層の表面にプラスチック系床材を貼着できる。即ち、床用再剥離型接着剤が水ガラスと高炉水砕スラグとを含有しているので、オープンタイムを確保することなく、コンクリート製の床下地表面に接着剤を塗布した後直ぐにプラスチック系床材を貼着でき、接着剤の十分な接着力が得られるとともに、水ガラスと高炉水砕スラグの割合を変えることで接着剤の硬化速度を所望の速度に設定できる。但し、上記床用再剥離型接着剤を床下地表面に塗布して塗布層を形成した後、塗布層の乾燥度又は硬化度が６０％以下の状態で、プラスチック系床材を塗布層の表面に貼着する必要がある。これは、塗布層の乾燥度又は硬化度が６０％を超えると良好な接着力が得られず、剥がれ易くなるからである。このように、オープンタイムを確保せずに済むこと以外は、従来と同様の床材仕上げ方法を用いることができるので、作業者は従来より短時間で比較的容易に床材仕上げ作業を行うことができる。   In the floor finishing method according to the third aspect of the present invention, the floor releasable adhesive for floor according to the first or second aspect is applied to the concrete floor base surface to form a coating layer to ensure open time. The plastic flooring can be adhered to the surface of the coating layer without doing so. That is, since the floor re-peelable adhesive contains water glass and granulated blast furnace slag, the plastic floor is applied immediately after the adhesive is applied to the concrete floor surface without securing open time. The material can be stuck and sufficient adhesive strength of the adhesive can be obtained, and the curing rate of the adhesive can be set to a desired speed by changing the ratio of water glass and granulated blast furnace slag. However, after the above-mentioned floor releasable adhesive is applied to the floor base surface to form a coating layer, the plastic flooring is applied to the surface of the coating layer in a state where the drying or curing degree of the coating layer is 60% or less. It is necessary to stick to. This is because when the dryness or cure degree of the coating layer exceeds 60%, good adhesive strength cannot be obtained and the coating layer is easily peeled off. As described above, since the floor finishing method similar to the conventional method can be used except that it is not necessary to secure an open time, the worker can finish the floor material relatively easily in a shorter time than before. Can do.

実施例の比較試験２における接着性試験の方法を示す概要図である。It is a schematic diagram which shows the method of the adhesive test in the comparative test 2 of an Example.

次に本発明を実施するための形態を図面に基づいて説明する。床用再剥離型接着剤は、コンクリート製或いは木質系の床下地表面にプラスチック系床材を貼着するために用いられ、水ガラスと高炉水砕スラグとを含有する。コンクリート製の床下地としては、コンクリートスラブ等が挙げられる。ここで、コンクリートスラブとは、床の荷重を支える鉄筋コンクリート造りの床をいう。木質系の床下地としては、合板、パーティクルボード等が挙げられる。また、プラスチック系床材としては、クッションフロア、硬質ビニルタイル（いわゆるＰタイル）、軟質ビニルタイル、タイルカーペット、表示シート（床面広告用シート、点字ブロックなど）、ゴム系床タイルなどが挙げられる。ここで、床材をプラスチック系床材に限定したのは、木材等の硬い床材を用いると床材が再剥離時に材料破壊してしまうのに対し、プラスチック系床材は柔らかく再剥離時に材料破壊しないからである。   Next, an embodiment for carrying out the present invention will be described with reference to the drawings. The floor releasable adhesive is used for adhering a plastic flooring to a concrete or wood floor surface, and contains water glass and blast furnace granulated slag. Concrete floor slabs include concrete slabs. Here, the concrete slab means a reinforced concrete floor that supports the load of the floor. Examples of the wooden floor base include plywood and particle board. Examples of plastic floor materials include cushion floors, hard vinyl tiles (so-called P tiles), soft vinyl tiles, tile carpets, display sheets (floor surface advertising sheets, braille blocks, etc.), rubber floor tiles, and the like. . Here, the flooring material is limited to plastic flooring. When hard flooring such as wood is used, the flooring material breaks down during re-peeling, whereas plastic flooring is soft and is free of material during re-peeling. It will not destroy.

また、水ガラスとしては、市販の水ガラス１号、水ガラス２号又は水ガラス３号を使用可能である。上記水ガラス１号〜３号は、主に二酸化ケイ素（ＳｉＯ2）及び酸化ナトリウム（Ｎａ2Ｏ）の含有割合が異なる。そして、水ガラスは、そのまま使用してもよいが、必要に応じて水で希釈して使用することもできる。更に、高炉水砕スラグは、水ガラスの硬化剤として使用される。ここで、高炉水砕スラグとは、銑鉄を製造する高炉で溶融された鉄鉱石中の鉄以外の成分が、副原料の石灰石やコークス中の灰分とともに高炉スラグとなって分離回収された粉末をいい、ブレーン値が３０００〜１６０００ｃｍ2／ｇ程度になるまで微粉砕されることが好ましい。更に、高炉水砕スラグを水ガラス１００質量部に対して３質量部以上３０質量部以下、好ましくは５質量部以上２０質量部以下の割合で含む。ここで、高炉水砕スラグを水ガラス１００質量部に対して３質量部以上３０質量部以下の範囲内に限定したのは、３質量部未満では高炉水砕スラグの含有割合が少なすぎるため接着剤が硬化するまで長時間を要し、また十分な接着力が得られず、３０質量部を超えると反対に硬化速度が速くなりすぎて、作業性が悪くなるからである。 Moreover, as water glass, commercially available water glass No. 1, water glass No. 2, or water glass No. 3 can be used. The above water glass Nos. 1 to 3 mainly differ in the content ratio of silicon dioxide (SiO 2 ) and sodium oxide (Na 2 O). And although water glass may be used as it is, it can also be used by diluting with water as needed. Furthermore, blast furnace granulated slag is used as a hardening agent for water glass. Here, granulated blast furnace slag is a powder obtained by separating and recovering components other than iron in iron ore melted in the blast furnace producing pig iron as blast furnace slag together with lime in the auxiliary material and ash in coke. It is preferable that fine pulverization is performed until the brain value is about 3000 to 16000 cm 2 / g. Furthermore, blast furnace granulated slag is contained in a proportion of 3 parts by mass or more and 30 parts by mass or less, and preferably 5 parts by mass or more and 20 parts by mass or less with respect to 100 parts by mass of water glass. Here, the reason why the blast furnace granulated slag was limited to the range of 3 parts by mass or more and 30 parts by mass or less with respect to 100 parts by mass of the water glass is that the content of the blast furnace granulated slag is too small if it is less than 3 parts by mass. This is because it takes a long time until the agent is cured, and sufficient adhesive force cannot be obtained. On the other hand, if it exceeds 30 parts by mass, the curing rate becomes too fast and the workability deteriorates.

一方、本発明の床用再剥離型接着剤は、水性エマルジョン樹脂又は充填剤のいずれか一方又は双方を更に水ガラス（主剤）への添加剤として含有することが好ましい。水性エマルジョンとしては、ＳＢＲ（スチレン−ブタジエンゴム）系共重合ラテックスやＮＢＲ（アクリロニトリル−ブタジエンゴム）系重合ラテックスなどの合成ゴム系ラテックス、酢酸ビニル系エマルジョン、エチレン−酢酸ビニル共重合エマルジョン、アクリル系重合エマルジョン、スチレン−アクリル系共重合エマルジョン等が挙げられる。上記水性エマルジョンを添加することにより、接着剤とプラスチック系床材との密着性が向上する。また、充填剤は、主剤である水ガラスの粘度を調節するとともに、接着剤が硬化する際の体積収縮を抑制し、硬化に伴うひび割れ等を防止するために添加される。充填剤としては、カオリンクレー等のクレー、ベントナイト、硫酸バリウム、マグネシウムの炭酸塩を含有させたり、又はアルミニウム、亜鉛、マグネシウム、鉄等の水酸化物や、カーボン、ガラス、マイカ等の無機物の粉末若しくは繊維状物や、屑、やし殻、籾殻、高粱等の粉末や、クルミ、桃等の種子殻粉を含有させたり、或いはコーンスターチ、小麦粉、米粉、芋デンプン粉、脂肪大豆粉、血粉、カゼイン等のタンパク質粉又はデンプン質粉等を含有させることができる。このうち、充填剤としては、所望の比重を有し、粒子径の調整がしやすく、またコスト的にも優れることから、クレーが好ましい。更に、水性エマルジョンは主剤である水ガラス１００質量部に対して１０質量部以上５０質量部以下添加することが好ましく、充填剤は主剤である水ガラス１００質量部に対して４０質量部以上８０質量部以下添加することが好ましい。ここで、水性エマルジョンの添加量を水ガラス１００質量部に対して１０質量部以上５０質量部以下の範囲内に限定したのは、１０質量部未満では接着剤とプラスチック系床材との密着性が不十分になり、５０質量部を超えると硬化物が柔軟になり再剥離性に問題が生じるからである。また、充填剤の添加量を水ガラス１００質量部に対して４０質量部以上８０質量部以下の範囲内に限定したのは、４０質量部未満では接着剤の粘度が低いため、クシ目ゴテ等での接着剤の塗工が困難になり、８０質量部を超えると接着剤の粘度が高くなりすぎて接着剤の床下地表面への塗工性が低下してしまうからである。   On the other hand, the floor re-peelable adhesive of the present invention preferably further contains one or both of an aqueous emulsion resin and a filler as an additive to water glass (main agent). Examples of aqueous emulsions include synthetic rubber latex such as SBR (styrene-butadiene rubber) copolymer latex and NBR (acrylonitrile-butadiene rubber) polymer latex, vinyl acetate emulsion, ethylene-vinyl acetate copolymer emulsion, and acrylic polymerization. Examples thereof include emulsions and styrene-acrylic copolymer emulsions. By adding the aqueous emulsion, adhesion between the adhesive and the plastic flooring is improved. The filler is added to adjust the viscosity of the water glass as the main agent, to suppress volume shrinkage when the adhesive is cured, and to prevent cracks and the like accompanying the curing. As fillers, clays such as kaolin clay, bentonite, barium sulfate, magnesium carbonate, hydroxides such as aluminum, zinc, magnesium, iron, and inorganic powders such as carbon, glass, mica, etc. Or fibrous materials, waste, coconut husk, rice husk, high cocoon powder, walnut, peach, etc. seed husk powder, or corn starch, wheat flour, rice flour, potato starch flour, fatty soybean flour, blood flour, Protein powder such as casein or starchy powder can be contained. Among these, as the filler, clay is preferable because it has a desired specific gravity, can easily adjust the particle diameter, and is excellent in cost. Further, the aqueous emulsion is preferably added in an amount of 10 to 50 parts by weight with respect to 100 parts by weight of water glass as the main agent, and the filler is 40 to 80 parts by weight with respect to 100 parts by weight of water glass as the main agent. It is preferable to add a part or less. Here, the addition amount of the aqueous emulsion was limited to the range of 10 parts by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the water glass. The adhesiveness between the adhesive and the plastic flooring was less than 10 parts by mass. If the amount exceeds 50 parts by mass, the cured product becomes flexible and a problem occurs in removability. Moreover, the amount of the filler added is limited to the range of 40 parts by weight or more and 80 parts by weight or less with respect to 100 parts by weight of water glass because the viscosity of the adhesive is low at less than 40 parts by weight. This is because it becomes difficult to apply the adhesive on the surface, and when the amount exceeds 80 parts by mass, the viscosity of the adhesive becomes too high, and the coating property of the adhesive to the floor base surface is lowered.

このように構成された床用再剥離型接着剤では、コンクリート製の床下地表面に接着剤を塗布した後、オープンタイムを確保することなく、直ぐにプラスチック系床材を貼着できる。また、高炉水砕スラグを水ガラス１００質量部に対して３質量部以上３０質量部以下の割合で含むので、接着剤の十分な接着力が得られるとともに、接着剤の硬化速度を所望の速度に設定できる。また、床用再剥離型接着剤が水性エマルジョン樹脂を含有することにより、接着剤とプラスチック系床材との密着性が向上する。また、床用再剥離型接着剤が充填剤を更に含有すれば、接着剤の床下地表面への塗布性を向上できるとともに、接着剤が硬化し収縮することを抑制でき、硬化に伴うひび割れ等を防止できる。   With the floor releasable adhesive configured as described above, the plastic flooring can be immediately applied without securing an open time after applying the adhesive to the concrete floor base surface. Moreover, since granulated blast furnace slag is contained in a proportion of 3 parts by mass or more and 30 parts by mass or less with respect to 100 parts by mass of water glass, sufficient adhesive strength of the adhesive can be obtained, and the curing rate of the adhesive can be set to a desired rate. Can be set. Moreover, the adhesiveness of an adhesive agent and a plastic-type flooring improves because the re-peeling adhesive for floors contains an aqueous emulsion resin. In addition, if the floor re-peelable adhesive further contains a filler, it is possible to improve the applicability of the adhesive to the floor base surface, and it is possible to suppress the adhesive from curing and shrinking, cracking due to curing, etc. Can be prevented.

このように構成された床用再剥離型接着剤を用いた床仕上げ方法を説明する。先ず、コンクリート製の床下地表面に、接着剤を塗布して塗布層を形成する。この接着剤は上記床用再剥離型接着剤である。この床用再剥離型接着剤は、クシ目ゴテやローラー等を用いて床下地表面に均一に塗布することができる。次に、この塗布層の表面にプラスチック系床材を貼着する。このとき塗布層の形成後、塗布層の乾燥度又は硬化度が６０％以下の状態で、床材を塗布層の表面に貼着する。床材を塗布層の表面に貼着するときの塗布層の乾燥度を６０％以下の範囲内に限定したのは、６０％を超えると良好な接着力が得られず、剥がれ易くなるからである。このように、オープンタイムを確保せずに済むこと以外は、従来と同様の床材仕上げ方法を用いることができるので、作業者は従来より短時間で比較的容易に床材仕上げ作業を行うことができる。また、この接着剤は、一般的なピールアップボンドと比較してタックが少ないため、ずらし作業による位置調整が容易にできる。   A floor finishing method using the floor re-peelable adhesive configured as described above will be described. First, an adhesive is applied to a concrete floor base surface to form a coating layer. This adhesive is the above-mentioned floor releasable adhesive. This floor re-peelable adhesive can be uniformly applied to the floor base surface using a comb-shaped iron or a roller. Next, a plastic flooring is adhered to the surface of the coating layer. At this time, after the formation of the coating layer, the flooring is adhered to the surface of the coating layer in a state where the drying or curing degree of the coating layer is 60% or less. The reason why the dryness of the coating layer when the flooring is stuck to the surface of the coating layer is limited to the range of 60% or less is that when it exceeds 60%, a good adhesive force cannot be obtained and it is easy to peel off. is there. As described above, since the floor finishing method similar to the conventional method can be used except that it is not necessary to secure an open time, the worker can finish the floor material relatively easily in a shorter time than before. Can do. Further, since this adhesive has less tack as compared with a general peel-up bond, position adjustment by shifting work can be easily performed.

次に本発明の実施例を比較例とともに詳しく説明する。   Next, examples of the present invention will be described in detail together with comparative examples.

＜実施例１＞
主剤として水ガラス（東曹産業社製：１号ケイ酸ソーダ）１００質量部に対し、硬化剤として高炉水砕スラグを３質量部添加して混合することにより、床用再剥離型接着剤を調製した。この接着剤を実施例１とした。 <Example 1>
By adding 3 parts by mass of granulated blast furnace slag as a curing agent to 100 parts by mass of water glass (manufactured by Tosoh Sangyo Co., Ltd .: 1 sodium silicate) as the main agent, the floor releasable adhesive is obtained. Prepared. This adhesive was referred to as Example 1.

＜実施例２〜６及び比較例１〜３＞
実施例２〜６及び比較例１〜３の床用再剥離型接着剤は、表１に示すようにそれぞれ配合した。 <Examples 2-6 and Comparative Examples 1-3>
The floor re-peelable adhesives of Examples 2 to 6 and Comparative Examples 1 to 3 were blended as shown in Table 1.

＜比較例４＞
床用再剥離型接着剤として、アクリル系ピールアップボンド（東リ社製：エコＧＡセメント）を用いた。この接着剤を比較例４とした。 <Comparative example 4>
An acrylic peel-up bond (manufactured by Toli Co., Ltd .: Eco GA cement) was used as the floor releasable adhesive. This adhesive was referred to as Comparative Example 4.

＜比較例５＞
床用再剥離型接着剤として、次の成分Ｃ１、成分Ｃ２及び成分Ｃ３をそれぞれ１００質量部、５０質量部及び２０質量部の割合で混合して調製した接着剤を用いた。この接着剤を比較例５とした。上記成分Ｃ１としては、アクリル系粘着剤（サイデン化学社製：サイビノールＡＣ−６０）を用いた。成分Ｃ２は次のように調製した。先ず、粘着性微細球の製造のために用意した容器に、水１００質量部、予め溶解しておいた２０％ポリビニルアルコール部分ケン化物の水溶液３質量部、及びアニオン性界面活性剤１質量部を混合し十分に撹拌して水溶液を調製した。一方、別の容器に、２−エチルヘキシルアクリレート４５質量部、ブチルアクリレート５質量部、アクリル酸１．５質量部、及び過酸化ベンゾイル０．５質量部を混合・撹拌し溶解して単量体の混合液を調製した。次いで、この単量体の混合液を上記水溶液に添加して撹拌した。１００ｒｐｍの回転速度で撹拌したところ、温度７０〜７５℃で重合反応が開始し、８５〜９５℃まで急激に発熱した。その後、８１〜８２℃まで冷却させて２時間反応させた。これにより均一な粒子径をもった水性懸濁液が生成された。次に、別の容器に、２−エチルヘキシルアクリレート５０質量部、アニオン活性剤０．５質量部、アクリル酸１．５質量部、過酸化ベンゾイル０．５質量部、及び水５０質量部を混合・撹拌して混合液を調製した。更に、この混合液を３０分間かけて上記水性懸濁液に全量滴下し、８０〜８３℃で４時間反応させた後に、冷却して所望の水性懸濁液（成分Ｃ２）を得た。また、成分Ｃ３としては、水系エマルジョン型粘着付与樹脂（荒川化学社製：タマノルＥ−８６５）を用いた。 <Comparative Example 5>
As the re-peelable adhesive for floors, an adhesive prepared by mixing the following components C1, C2 and C3 at a ratio of 100 parts by mass, 50 parts by mass and 20 parts by mass, respectively. This adhesive was referred to as Comparative Example 5. As the component C1, an acrylic pressure-sensitive adhesive (manufactured by Seiden Chemical Co., Ltd .: Cybinol AC-60) was used. Component C2 was prepared as follows. First, in a container prepared for the production of adhesive microspheres, 100 parts by mass of water, 3 parts by mass of an aqueous solution of 20% polyvinyl alcohol partially saponified in advance, and 1 part by mass of an anionic surfactant were added. An aqueous solution was prepared by mixing and stirring well. On the other hand, in another container, 45 parts by mass of 2-ethylhexyl acrylate, 5 parts by mass of butyl acrylate, 1.5 parts by mass of acrylic acid, and 0.5 parts by mass of benzoyl peroxide are mixed and stirred to dissolve, A mixture was prepared. Next, the mixed solution of the monomers was added to the aqueous solution and stirred. When stirring was performed at a rotation speed of 100 rpm, the polymerization reaction started at a temperature of 70 to 75 ° C., and heat was rapidly generated up to 85 to 95 ° C. Then, it was made to cool to 81-82 degreeC and was made to react for 2 hours. This produced an aqueous suspension with a uniform particle size. Next, in another container, 50 parts by mass of 2-ethylhexyl acrylate, 0.5 parts by mass of an anionic activator, 1.5 parts by mass of acrylic acid, 0.5 parts by mass of benzoyl peroxide, and 50 parts by mass of water were mixed. A mixed solution was prepared by stirring. Furthermore, the entire amount of this mixed solution was dropped into the above aqueous suspension over 30 minutes, reacted at 80 to 83 ° C. for 4 hours, and then cooled to obtain a desired aqueous suspension (component C2). In addition, as the component C3, an aqueous emulsion type tackifying resin (Arakawa Chemical Co., Ltd .: Tamanol E-865) was used.

＜比較試験１及び評価＞
実施例１〜６及び比較例１〜５の床用再剥離型接着剤の乾燥度又は硬化度を測定した。具体的には、気温５℃において上記接着剤をコンクリート製の床下地表面にウーローラーを用いて２００ｇ／ｍ2となるように塗布し、１５分毎にＰＥＴフィルムを塗布層表面に載せてローラーで１往復した後に、このＰＥＴフィルムを直ぐに剥がして接着剤がＰＥＴフィルムに付着する量を目視で観察した。そして、ＰＥＴフィルム全面に接着剤がべっとり付着した状態を乾燥度又は硬化度０％とし、ＰＥＴフィルムに全く接着剤が付着しない状態を乾燥度又は硬化度１００％とし、ＰＥＴフィルムに接着剤が付着していない面積割合を乾燥度又は硬化度として判定した。その結果を表１に示す。なお、「乾燥度又は硬化度」としたのは、次の理由に基づく。比較例４のピールアップボンドは、塗工した後、乾燥することにより、タック（粘着性）が発現するけれども、粘着剤であるため硬化しない。これに対し、実施例１〜６の再剥離型接着剤は、乾燥したり、又は完全に乾燥しなくても硬化したり、或いは低温の条件下でも一定の時間が経過すれば硬化する。両者を含むために「乾燥度又は硬化度」とした。 <Comparative test 1 and evaluation>
The dryness or the degree of cure of the floor releasable adhesives of Examples 1 to 6 and Comparative Examples 1 to 5 was measured. Specifically, at a temperature of 5 ° C., the adhesive is applied to a concrete floor base surface using a woofer so as to be 200 g / m 2, and a PET film is placed on the surface of the coating layer every 15 minutes. Then, the PET film was peeled off immediately and the amount of the adhesive adhering to the PET film was visually observed. The state where the adhesive is sticky on the entire surface of the PET film is 0% dryness or cure, the state where no adhesive is attached to the PET film is 100% dryness or cure, and the adhesive is attached to the PET film. The area ratio which was not performed was determined as a dryness or a cure degree. The results are shown in Table 1. The “dryness or degree of cure” is based on the following reason. The peel-up bond of Comparative Example 4 is tacky (adhesive) by coating and then drying, but does not cure because it is an adhesive. On the other hand, the re-peelable adhesives of Examples 1 to 6 are cured or cured even if not completely dried, or cured after a certain period of time even under low temperature conditions. In order to include both, it was set as "dryness or hardening degree."

Figure 0006100432
Figure 0006100432

表１から明らかなように、高炉水砕スラグを添加しない比較例１では、塗布後１８０分以上経過しても接着剤が全く硬化せず、高炉水砕スラグの添加量が２質量部と少なすぎた比較例２では、塗布後１８０分経過しても接着剤が１５％しか硬化せず、高炉水砕スラグの添加利用が４０質量部と多すぎた比較例３では、塗布後１５分で接着剤が７０％硬化していた。これらに対し、高炉水砕スラグの添加量が３〜３０質量部と適切な範囲内である実施例１〜６では、高炉水砕スラグの添加量が増えるに従って硬化速度が速くなり、塗布後１８０分経過すると接着剤が５０〜１００％硬化した。一方、汎用品のアクリル系ピールアップボンドを用いた比較例４では、塗布後１２０分経過後に接着剤が完全に乾燥し、アクリル系粘接着剤を用いた比較例５では、塗布後９０分経過後に接着剤が完全に乾燥した。   As is apparent from Table 1, in Comparative Example 1 in which no blast furnace granulated slag was added, the adhesive was not cured at all even after 180 minutes or more after application, and the amount of blast furnace granulated slag added was as small as 2 parts by mass. In Comparative Example 2, which was too much, only 15% of the adhesive was cured even after 180 minutes had elapsed after application, and in Comparative Example 3, where the amount of addition of blast furnace granulated slag was too large, 40 parts by weight, 15 minutes after application. The adhesive was 70% cured. On the other hand, in Examples 1 to 6 in which the addition amount of blast furnace granulated slag is within an appropriate range of 3 to 30 parts by mass, the curing rate increases as the addition amount of blast furnace granulated slag increases, and 180% after coating. After a lapse of time, the adhesive was cured by 50 to 100%. On the other hand, in Comparative Example 4 using a general-purpose acrylic peel-up bond, the adhesive was completely dried after 120 minutes from application, and in Comparative Example 5 using an acrylic adhesive, 90 minutes after application. After the lapse of time, the adhesive was completely dried.

＜比較例６＞
実施例２の接着剤を、コンクリート製の床下地表面に塗工量２００ｇ／ｍ2となるようにウーローラーを用いて塗布した後に、この塗布層の表面に、床材として木質系フローリングを貼着した。 <Comparative Example 6>
After applying the adhesive of Example 2 to a concrete floor foundation surface using a wool roller so that the coating amount is 200 g / m 2 , a wooden flooring is pasted on the surface of the coating layer as a flooring material. I wore it.

＜比較試験２及び評価＞
実施例１〜６及び比較例１〜５の接着剤を、コンクリート製の床下地表面に塗工量３００ｇ／ｍ2となるようにウーローラーを用いてそれぞれ塗布した後に、これらの塗布層の表面に、床材としてポリ塩化ビニル樹脂製タイル（Ｐタイル）をそれぞれ貼着した。なお、実施例１〜６及び比較例１〜５では、実施例１〜６及び比較例１〜５の接着剤を床下地表面に塗布した後、接着剤の乾燥度又は硬化度が０％、２５％、５０％、６０％、７０％及び１００％であるときにＰタイルをそれぞれ貼着して、ずらし作業性、接着性、再剥離性及び防汚性をそれぞれ評価した。また、比較例６では、実施例２の接着剤を床下地表面に塗布した後、接着剤の乾燥度又は硬化度が０％、２５％、５０％、６０％、７０％及び１００％であるときに木質系フローリングを貼着して、ずらし作業性、接着性、再剥離性及び防汚性をそれぞれ評価した。 <Comparative test 2 and evaluation>
After applying each of the adhesives of Examples 1 to 6 and Comparative Examples 1 to 5 to a concrete floor foundation surface using a wool roller so as to have a coating amount of 300 g / m 2 , the surfaces of these coating layers Further, tiles made of polyvinyl chloride resin (P tile) were attached as floor materials. In Examples 1 to 6 and Comparative Examples 1 to 5, after applying the adhesives of Examples 1 to 6 and Comparative Examples 1 to 5 to the floor base surface, the dryness or curing degree of the adhesive is 0%, P tiles were stuck at 25%, 50%, 60%, 70% and 100%, respectively, and the shifting workability, adhesiveness, removability and antifouling property were evaluated. In Comparative Example 6, after the adhesive of Example 2 was applied to the floor base surface, the dryness or cure degree of the adhesive was 0%, 25%, 50%, 60%, 70% and 100%. Occasionally, woody flooring was attached to evaluate shifting workability, adhesion, removability and antifouling properties.

（１）ずらし作業性
ずらし作業性が良いとは、床下地に接着剤を塗工し、床材を施工する際に床材の位置合せが任意に行えることをいう。反対にずらし作業性が悪いとは、床材の位置合せを行うことができない、あるいは困難なことをいう。コンクリート製の床下地に接着剤を塗工し、床仕上げ材（３００ｍｍ×３００ｍｍの床タイル）を貼着させたときに、このずらし作業を簡単に行うことができた場合を「優」とし、ずらし作業を行うことが不可能であったか或いは困難であった場合を「不良」とした。 (1) Shifting workability Good shifting workability means that the flooring can be arbitrarily aligned when an adhesive is applied to the floor base and the flooring is applied. On the other hand, poor shifting workability means that it is impossible or difficult to align the flooring. When the adhesive is applied to the floor floor made of concrete and the floor finishing material (300mm x 300mm floor tile) is adhered, the case where this shifting work can be easily performed is "excellent" A case where it was impossible or difficult to perform the shifting work was defined as “bad”.

（２）接着性
図１に示すように、先ず、幅３０ｍｍ×長さ１５０ｍｍにカットしたフレキシブル板１１（コンクリート製）の表面に塗布層１３を介して、幅２５ｍｍ×長さ１５０ｍｍにカットした床材１２（Ｐタイル又は木質系フローリング）を貼着し、ハンドローラーにて圧着させた。このとき床材１２の床下地１１表面に対する接着面積が１８７５ｍｍ2（幅２５ｍｍ×長さ７５ｍｍ）になるように貼着した。この状態で３日間養生したものを試験片１０とした。次に、上記試験片１０の床材１２にせん断方向に２００ｇの錘１４を取付けた状態で、試験片１０の床下地１１を吊り下げて１時間保持することにより、接着性を評価した。即ち、１時間経過後、接着面が剥がれずに錘１４が落ちていない場合を「優」とし、１時間以内に接着面が剥がれ錘１４が落ちていた場合を「不良」とした。なお、上記フレキシブル板１１はコンクリート製の床下地の代用品として用いた。 (2) Adhesiveness First, as shown in FIG. 1, a floor cut to a width of 25 mm and a length of 150 mm via a coating layer 13 on the surface of a flexible plate 11 (made of concrete) cut to a width of 30 mm and a length of 150 mm. Material 12 (P tile or wood flooring) was attached and pressed with a hand roller. At this time, the floor material 12 was attached so that the adhesion area of the floor material 12 to the surface of the floor base 11 was 1875 mm 2 (width 25 mm × length 75 mm). The test piece 10 was aged for 3 days in this state. Next, the adhesiveness was evaluated by suspending the floor base 11 of the test piece 10 and holding it for 1 hour in a state where a weight 14 of 200 g was attached to the floor material 12 of the test piece 10 in the shearing direction. That is, after 1 hour, the case where the bonded surface was not peeled off and the weight 14 was not dropped was defined as “excellent”, and the case where the bonded surface was peeled off within 1 hour and the weight 14 was dropped was defined as “bad”. The flexible plate 11 was used as a substitute for a concrete floor foundation.

（３）再剥離性
床下地表面に塗布層を介して床材（Ｐタイル又は木質系フローリング）を貼着し、３日間養生したものを３枚ずつ試験片として用意した。これらの試験片について床材を引き剥がすことにより再剥離性を評価した。即ち、３枚の床材とも破壊せずにきれいに剥がれた場合を「優」とし、３枚の床材のうち１枚の床材が破壊し残りの２枚の床材が破壊せずにきれいに剥がれた場合を「良」とし、３枚の床材のうち２枚以上の床材が破壊した場合を「不良」とした。 (3) Removability A flooring material (P tile or wood flooring) was attached to the floor base surface via an application layer, and three pieces cured for 3 days were prepared as test pieces. About these test pieces, the removability was evaluated by peeling off the flooring. In other words, if all three flooring materials are peeled cleanly without being destroyed, “excellent” is assumed. One of the three flooring materials is destroyed and the remaining two flooring materials are not destroyed. The case where it peeled off was set as "good", and the case where two or more floor materials among three floor materials destroyed was set as "bad".

（４）防汚性
上記（３）の再剥離性の試験において、床材（Ｐタイル又は木質系フローリング）を引き剥がした後の床下地表面の様子から防汚性を評価した。床下地表面に、床材を引き剥がした際に材料破壊等により生じた床材の破片が付着しておらず、床下地表面に残った接着剤もケレン等を用いて容易に取り除くことができる状態である場合を「優」とし、床材の材料破壊による床材の破片が付着していたり、床下地表面に残った接着剤がベタついていたり、ケレン等で簡単に取り除くことができず、下地の再施工が必要な場合を「不良」とした。 (4) Antifouling property In the re-peelability test of (3) above, the antifouling property was evaluated from the state of the floor base surface after the floor material (P tile or wood flooring) was peeled off. There is no debris of the floor material generated by material destruction when the floor material is peeled off on the floor base surface, and the adhesive remaining on the floor base surface can be easily removed using kelen etc. If the condition is "excellent", the floor material debris from the material destruction of the floor material is attached, the adhesive remaining on the floor substrate surface is sticky, can not be easily removed with keren, A case where reworking of the groundwork was required was regarded as “bad”.

（５）総合判定
上記（１）〜（４）の４つの試験において、４つの試験とも「優」であったものを「Ａ」とし、４つの試験のうち１つの試験だけ「不良」又は「良」であったものを「Ｂ」とし、４つの試験のうち２つ以上の試験が「不良」又は「良」であったものを「Ｃ」とした。それらの結果を表２及び表３に示した。なお、表２及び表３において『−』は測定不能であったことを示す。 (5) Comprehensive judgment In the four tests (1) to (4) above, “A” indicates that all four tests are “excellent”, and only one test among the four tests is “bad” or “ “B” was assigned as “good”, and “C” was assigned when two or more of the four tests were “bad” or “good”. The results are shown in Tables 2 and 3. In Tables 2 and 3, “-” indicates that measurement was impossible.

Figure 0006100432
Figure 0006100432

Figure 0006100432
Figure 0006100432

表２及び表３から明らかなように、接着剤としてアクリル系ピールアップボンドを用いた比較例４や、アクリル系粘接着剤を用いた比較例５では、乾燥度０〜６０％のときの再剥離性が『不良』又は『良』であるのに対し、乾燥度７０〜１００％のときの再剥離性が『優』となっており、接着剤の乾燥度の高い方が再剥離性が向上することが分かった。このため、比較例４及び５では、気温が低く接着剤が乾燥するまで時間が掛かるときは、オープンタイムがより長くなって、作業性が低下することが分かった。また、防汚性ついては、比較例４及び５ともに、いずれの乾燥度においても床下地材にベタつきが残り、『不良』であった。   As is clear from Tables 2 and 3, in Comparative Example 4 using an acrylic peel-up bond as an adhesive and Comparative Example 5 using an acrylic adhesive, the dryness was 0 to 60%. The re-peelability is “poor” or “good”, but the re-peelability is “excellent” when the dryness is 70 to 100%. Was found to improve. For this reason, it was found that in Comparative Examples 4 and 5, when the temperature is low and it takes time until the adhesive dries, the open time becomes longer and the workability decreases. As for the antifouling property, in both Comparative Examples 4 and 5, the floor base material remained sticky at any dryness and was “bad”.

また、接着剤として水ガラス１００質量部に対して高炉水砕スラグを添加しなかった比較例１では、接着剤が硬化しないため、接着性、再剥離性及び防汚性は、『不良』又は『測定不能』であった。また、接着剤として水ガラス１００質量部に対して高炉水砕スラグを２質量部と少なすぎた比較例２では、硬化度０〜６０％のときのずらし作業性が『優』であったけれども、それ以外のずらし作業性、接着性、再剥離性及び防汚性は、硬化度に拘らず『不良』又は『測定不能』であった。更に、接着剤として水ガラス１００質量部に対して高炉水砕スラグを４０質量部と多すぎた比較例３では、接着剤の硬化が速すぎるため、ずらし作業性、接着性、再剥離性及び防汚性は、『不良』又は『測定不能』であった。   Further, in Comparative Example 1 in which blast furnace granulated slag was not added to 100 parts by mass of water glass as an adhesive, since the adhesive was not cured, the adhesiveness, re-peelability and antifouling properties were “poor” or It was “not measurable”. Further, in Comparative Example 2 in which the amount of granulated blast furnace slag was too small as 2 parts by mass with respect to 100 parts by mass of water glass as an adhesive, the shifting workability when the degree of cure was 0 to 60% was “excellent”. The other shift workability, adhesiveness, removability and antifouling property were “bad” or “unmeasurable” regardless of the degree of curing. Furthermore, in Comparative Example 3 in which the amount of blast furnace granulated slag was too much as 40 parts by mass with respect to 100 parts by mass of water glass as an adhesive, the curing of the adhesive was too fast, so that the shift workability, adhesiveness, removability and The antifouling property was “bad” or “unmeasurable”.

これらに対し、接着剤として水ガラス１００質量部に対して高炉水砕スラグを３〜３０質量部と適切な割合で含有する実施例１〜６では、硬化度７０〜１００％のときの総合評価が『Ｃ』であり、硬化度０〜６０％のときの総合評価が『Ａ』となっており、接着剤の硬化度の低い方が性能（ずらし作業性、接着性、再剥離性及び防汚性の全て）が向上することが分かった。このため、実施例１〜６では、気温が低くても、オープンタイムを確保せずに、床下地表面に床材を貼着できるため、作業性が低下せず効率良く作業できることが分かった。   On the other hand, in Examples 1-6 which contain 3-30 mass parts of blast furnace granulated slag with an appropriate ratio with respect to 100 mass parts of water glass as an adhesive agent, comprehensive evaluation at the time of a cure degree of 70-100% Is "C", and the overall evaluation when the degree of cure is 0 to 60% is "A". The lower the degree of cure of the adhesive, the better performance (shifting workability, adhesiveness, removability and prevention) It was found that all of the soiling properties were improved. For this reason, in Examples 1-6, even if temperature was low, since open material was not ensured and a flooring material could be stuck on the floor ground surface, it turned out that workability | operativity does not fall and can work efficiently.

また、水ガラス１００質量部に対して高炉水砕スラグを１０質量部と適切な含有割合の接着剤を用いたけれども、床材として木質系フローリングを用いた比較例６では、硬化度０〜６０％のときのずらし作業性及び接着性が『優』であったけれども、木質系の床材が再剥離の際に材料破壊してしまったため、再剥離性及び防汚性は『不良』であった。   Moreover, although 10 mass parts of blast furnace granulated slag was used for 100 mass parts of water glass and an adhesive having an appropriate content ratio, in Comparative Example 6 using wood flooring as a flooring, the degree of cure was 0-60. Although the displacement workability and adhesiveness at the time of% were “excellent”, the removability and antifouling properties were “poor” because the wooden flooring material was destroyed during re-peeling. It was.

＜実施例７＞
主剤として水ガラス（東曹産業社製：１号ケイ酸ソーダ）１００質量部に対し、主剤への添加剤としてＳＢＲ系共重合ラテックス（旭化成社製：ＤＬ−６１２）を２５質量部と、硬化剤として高炉水砕スラグを１０質量部添加して混合することにより、床用再剥離型接着剤を調製した。この接着剤を実施例７とした。 <Example 7>
25 parts by mass of SBR copolymer latex (manufactured by Asahi Kasei Co., Ltd .: DL-612) as an additive to the main ingredient is cured with respect to 100 parts by mass of water glass (manufactured by Toso Sangyo Co., Ltd .: No. 1 sodium silicate) as the main ingredient. By adding 10 parts by mass of blast furnace granulated slag as an agent and mixing, a floor re-peelable adhesive was prepared. This adhesive was referred to as Example 7.

＜実施例８＞
主剤として水ガラス（東曹産業社製：１号ケイ酸ソーダ）１００質量部に対し、主剤への添加剤としてカオリンクレー（充填剤）を６０質量部と、硬化剤として高炉水砕スラグを１０質量部添加して混合することにより、床用再剥離型接着剤を調製した。この接着剤を実施例８とした。 <Example 8>
100 parts by weight of water glass (manufactured by Toso Sangyo Co., Ltd .: 1 sodium silicate) as the main agent, 60 parts by weight of kaolin clay (filler) as an additive to the main agent, and 10 blast furnace granulated slag as a curing agent A re-peelable adhesive for floor was prepared by adding and mixing parts by mass. This adhesive was referred to as Example 8.

＜実施例９＞
主剤として水ガラス（東曹産業社製：１号ケイ酸ソーダ）１００質量部に対し、主剤への添加剤としてＳＢＲ系共重合ラテックス（旭化成社製：ＤＬ−６１２）及びカオリンクレー（充填剤）をそれぞれ２５質量部及び４０質量部と、硬化剤として高炉水砕スラグを１０質量部添加して混合することにより、床用再剥離型接着剤を調製した。この接着剤を実施例９とした。 <Example 9>
100 parts by mass of water glass (manufactured by Toso Sangyo Co., Ltd .: 1 sodium silicate) as the main agent, SBR copolymer latex (manufactured by Asahi Kasei Co., Ltd .: DL-612) and kaolin clay (filler) as additives to the main agent Were added to and mixed with 25 parts by mass and 40 parts by mass of blast furnace granulated slag as a curing agent to prepare a floor re-peelable adhesive. This adhesive was referred to as Example 9.

＜実施例１０＞
主剤として水ガラス（東曹産業社製：１号ケイ酸ソーダ）１００質量部に対し、主剤への添加剤としてＳＢＲ系共重合ラテックス（旭化成社製：ＤＬ−６１２）及びカオリンクレー（充填剤）をそれぞれ２５質量部及び８０質量部と、硬化剤として高炉水砕スラグを１０質量部添加して混合することにより、床用再剥離型接着剤を調製した。この接着剤を実施例１０とした。 <Example 10>
100 parts by mass of water glass (manufactured by Toso Sangyo Co., Ltd .: 1 sodium silicate) as the main agent, SBR copolymer latex (manufactured by Asahi Kasei Co., Ltd .: DL-612) and kaolin clay (filler) as additives to the main agent Were added to and mixed with 25 parts by mass and 80 parts by mass of blast furnace granulated slag as a curing agent to prepare a floor re-peelable adhesive. This adhesive was referred to as Example 10.

＜実施例１１＞
主剤として水ガラス（東曹産業社製：１号ケイ酸ソーダ）１００質量部に対し、主剤への添加剤としてＳＢＲ系共重合ラテックス（旭化成社製：ＤＬ−６１２）及びコーンスターチ（充填剤）をそれぞれ２５質量部及び６０質量部と、硬化剤として高炉水砕スラグを１０質量部添加して混合することにより、床用再剥離型接着剤を調製した。この接着剤を実施例１１とした。 <Example 11>
For 100 parts by mass of water glass (manufactured by Toso Sangyo Co., Ltd .: 1 sodium silicate) as the main agent, SBR copolymer latex (manufactured by Asahi Kasei Co., Ltd .: DL-612) and corn starch (filler) as additives to the main agent Removable adhesive for floors was prepared by adding and mixing 10 parts by mass of 25 parts by mass and 60 parts by mass of blast furnace granulated slag as a curing agent. This adhesive was referred to as Example 11.

＜比較試験３及び評価＞
実施例１〜１１の床用再剥離型接着剤を、ウーローラー又は塗布量４５０ｇ／ｍ2のクシ目ゴテを用いて塗布し、接着剤の伸び性及び作業性を評価した。そして、接着剤を塗布する作業が重くなく容易に伸ばすことができた場合を「優」とし、塗布作業が重く接着剤を伸ばし難かった場合を「不良」とした。その結果を表４に示す。 <Comparative test 3 and evaluation>
The re-peeling adhesives for floors of Examples 1 to 11 were applied using a wool roller or a comb-shaped iron having a coating amount of 450 g / m 2 , and the extensibility and workability of the adhesive were evaluated. The case where the operation of applying the adhesive was not heavy and could be easily extended was determined as “excellent”, and the case where the application operation was heavy and the adhesive was difficult to extend was determined as “bad”. The results are shown in Table 4.

Figure 0006100432
Figure 0006100432

表４から明らかなように、床用再剥離型接着剤に添加剤を添加せずかつスラグ（硬化剤）を３〜３０質量部含有した実施例１〜６では、接着剤の粘度が低いため、クシ目ゴテによる塗布性は『不良』であったけれども、ローラーによる塗布性は『優』であった。また、床用再剥離型接着剤に添加剤を添加せずかつスラグ（硬化剤）を３０質量部含有した実施例６では、クシ目ゴテによる塗布性及びローラーによる塗布性はいずれも『優』であった。これは、スラグ（硬化剤）の増量により接着剤の粘度が高くなったためであると考えられる。   As is apparent from Table 4, in Examples 1 to 6 in which no additive was added to the floor re-peelable adhesive and 3 to 30 parts by mass of slag (curing agent) was contained, the viscosity of the adhesive was low. Although the applicability by the comb eyes was “poor”, the applicability by the roller was “excellent”. Further, in Example 6 in which no additive was added to the re-peelable adhesive for flooring and 30 parts by mass of slag (curing agent) was contained, the applicability by the comb eyes and the applicability by the roller were both “excellent”. Met. This is considered to be because the viscosity of the adhesive was increased by increasing the amount of slag (curing agent).

また、床用再剥離型接着剤に添加剤としてＳＢＲ系共重合ラテックスを２５質量部添加しかつスラグ（硬化剤）を１０質量部含有した実施例７では、接着剤の粘度が低いため、クシ目ゴテによる塗布性は『不良』であったけれども、ローラーによる塗布性は『優』であった。また、床用再剥離型接着剤に添加剤としてカオリンクレー（充填剤）を６０質量部添加しかつスラグ（硬化剤）を１０質量部含有した実施例８では、ローラーによる塗布性は『不良』であったけれども、クシ目ゴテによる塗布性は『優』であった。これは、カオリンクレーの添加により接着剤の粘度が増大したためであると考えられる。   Further, in Example 7 in which 25 parts by mass of SBR copolymer latex was added as an additive to the re-peelable adhesive for flooring and 10 parts by mass of slag (curing agent) was contained, the viscosity of the adhesive was low. Although the applicability by the eye iron was “poor”, the applicability by the roller was “excellent”. Further, in Example 8 in which 60 parts by mass of kaolin clay (filler) was added as an additive to the re-peelable adhesive for flooring and 10 parts by mass of slag (curing agent) was contained, the applicability by the roller was “poor”. However, the applicability by the comb eyes was “excellent”. This is presumably because the viscosity of the adhesive was increased by the addition of kaolin clay.

また、床用再剥離型接着剤に添加剤としてＳＢＲ系共重合ラテックス及びカオリンクレー（充填剤）をそれぞれ２５質量部及び４０質量部添加しかつスラグ（硬化剤）を１０質量部含有した実施例９では、ローラーによる塗布性は『不良』であったけれども、クシ目ゴテによる塗布性は『優』であった。また、床用再剥離型接着剤に添加剤としてＳＢＲ系共重合ラテックス及びカオリンクレー（充填剤）をそれぞれ２５質量部及び８０質量部添加しかつスラグ（硬化剤）を１０質量部含有した実施例１０では、ローラーによる塗布性は『不良』であったけれども、クシ目ゴテによる塗布性は『優』であった。同様に、床用再剥離型接着剤に添加剤としてＳＢＲ系共重合ラテックス及びコーンスターチ（充填剤）をそれぞれ２５質量部及び６０質量部添加しかつスラグ（硬化剤）を１０質量部含有した実施例１１では、ローラーによる塗布性は『不良』であったけれども、クシ目ゴテによる塗布性は『優』であった。これらは、充填剤の添加により接着剤の粘度が増大したためであると考えられる。   Further, an example in which 25 parts by mass and 40 parts by mass of SBR copolymer latex and kaolin clay (filler) as additives are added to the re-peelable adhesive for floors and 10 parts by mass of slag (curing agent), respectively. In No. 9, although the applicability by the roller was “poor”, the applicability by the comb eyes was “excellent”. Moreover, the Example which added 25 mass parts and 80 mass parts of SBR type | system | group copolymer latex and kaolin clay (filler) as an additive to the re-peelable adhesive for floors, respectively, and contained 10 mass parts of slag (hardening agent). In No. 10, the applicability by the roller was “poor”, but the applicability by the comb-shaped iron was “excellent”. Similarly, an example in which 25 parts by mass and 60 parts by mass of SBR copolymer latex and corn starch (filler) as additives are added to the re-peelable adhesive for flooring and 10 parts by mass of slag (curing agent), respectively. In No. 11, the applicability by the roller was “poor”, but the applicability by the comb eyes was “excellent”. These are considered to be because the viscosity of the adhesive was increased by the addition of the filler.

＜比較試験４及び評価＞
実施例７〜１１の接着剤について、比較試験２と同様の方法で、接着剤の乾燥度又は硬化度が０％、２５％、５０％、６０％、７０％及び１００％であるときのずらし作業性、接着性、再剥離性及び防汚性をそれぞれ評価した。それらの結果を表５に示した。 <Comparative test 4 and evaluation>
For the adhesives of Examples 7 to 11, in the same manner as in Comparative Test 2, shifting is performed when the dryness or cure degree of the adhesive is 0%, 25%, 50%, 60%, 70%, and 100%. Workability, adhesiveness, removability and antifouling properties were evaluated. The results are shown in Table 5.

Figure 0006100432
Figure 0006100432

表５から明らかなように、主剤への添加剤としてＳＢＲ又は充填剤のいずれか一方又は双方を含有する実施例７〜１１では、硬化度７０〜１００％のときのずらし作業性及び接着性は『不良』であり、総合評価が『Ｃ』となったの対して、硬化度０〜６０％のときはいずれの評価試験の結果も『優』であり、総合評価も『Ａ』となった。このことから、主剤にＳＢＲ又は充填剤のいずれか一方又は双方を添加しても、主剤に添加剤を含有しない実施例１〜６と同様に、接着剤の硬化度の低い方が性能（ずらし作業性、接着性、再剥離性及び防汚性の全て）が向上し、気温が低くても、オープンタイムを確保せずに、床下地表面に床材を貼着できるため、作業性が低下せず効率良く作業できることが分かった。   As is apparent from Table 5, in Examples 7 to 11 containing either or both of SBR and filler as an additive to the main agent, the shift workability and adhesiveness when the degree of cure is 70 to 100% are While it was “bad” and the overall evaluation was “C”, when the degree of cure was 0 to 60%, the results of any evaluation test were “excellent” and the overall evaluation was also “A”. . From this, even if one or both of SBR and filler is added to the main agent, the lower the degree of cure of the adhesive, the same as in Examples 1 to 6 which do not contain the additive in the main agent (shifting) Workability, adhesion, re-peelability and antifouling properties are all improved), and even when the temperature is low, the flooring surface can be adhered to the surface of the floor base without securing open time, so workability is reduced. It turned out that it can work efficiently without doing.

本発明の床用再剥離型接着剤は、床下地表面にプラスチック系床材を貼着するため等に利用できる。   The floor re-peelable adhesive of the present invention can be used for adhering a plastic floor material to the floor base surface.

１１ フレキシブル板（床下地の代用品）
１２ 床材
１３ 塗布層 11 Flexible board (substitute for flooring)
12 Flooring 13 Coating layer

Claims (3)

水ガラスと高炉水砕スラグとを含有し、コンクリート製の床下地表面にプラスチック系床材を貼着するために用いられる床用再剥離型接着剤であって、
前記高炉水砕スラグを前記水ガラス１００質量部に対して３質量部以上３０質量部以下の割合で含むことを特徴とする床用再剥離型接着剤。 Removable adhesive for floors, containing water glass and granulated blast furnace slag, and used for adhering plastic flooring to the concrete floor foundation surface,
The floor releasable adhesive comprising the granulated blast furnace slag at a ratio of 3 parts by mass to 30 parts by mass with respect to 100 parts by mass of the water glass. 水性エマルジョン樹脂又は充填剤のいずれか一方又は双方を更に含有する請求項１記載の床用再剥離型接着剤。   The floor releasable adhesive according to claim 1, further comprising either or both of an aqueous emulsion resin and a filler. コンクリート製の床下地表面に、接着剤を塗布して塗布層を形成し、前記塗布層の表面にプラスチック系床材を貼着することにより、前記床材を前記床下地表面に前記塗布層を介して施工する床仕上げ方法において、
前記接着剤が請求項１又は２に記載の床用再剥離型接着剤であり、
この床用再剥離型接着剤を前記床下地表面に塗布して前記塗布層を形成した後、前記塗布層の乾燥度又は硬化度が６０％以下の状態で、前記プラスチック系床材を前記塗布層の表面に貼着することを特徴とする床仕上げ方法。 An adhesive is applied to a concrete floor base surface to form a coating layer, and a plastic flooring is adhered to the surface of the coating layer, whereby the floor material is applied to the floor base surface. In the floor finishing method
The adhesive is a floor peelable adhesive according to claim 1 or 2,
After applying the floor re-peelable adhesive to the floor base surface to form the coating layer, the coating floor is applied in a state where the dryness or curing degree of the coating layer is 60% or less. A floor finishing method characterized by sticking to the surface of a layer.
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Citations (3)

* Cited by examiner, † Cited by third party
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JPH101337A (en) * 1996-06-11 1998-01-06 Shigeki Aoki Formation of hardened product of water glass and blast furnace water-crashed granulated, slag, and hardening composition
JPH1025457A (en) * 1996-07-12 1998-01-27 Kurosawa Kensetsu Kk Adhesive for joining concrete-base structural member and the like
JP2000044322A (en) * 1998-07-30 2000-02-15 Fujimori Kogyo Kk Hardenable composition and formation of water glass- blast furnace water-granulated slag-based hardened material

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JPS4915941B1 (en) * 1970-08-14 1974-04-18
JPS5144542B2 (en) * 1972-09-28 1976-11-29
DE19644309A1 (en) * 1996-10-24 1998-04-30 Basf Ag Powdery adhesive
GB9708831D0 (en) * 1997-04-30 1997-06-25 Unilever Plc Suspensions with high storage stability, comprising an aqueous silicate solution and filler material
DE10316079A1 (en) * 2003-04-08 2004-11-11 Wacker Polymer Systems Gmbh & Co. Kg Polyvinyl alcohol-stabilized redispersible powder with liquefying properties
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Publication number Priority date Publication date Assignee Title
JPH101337A (en) * 1996-06-11 1998-01-06 Shigeki Aoki Formation of hardened product of water glass and blast furnace water-crashed granulated, slag, and hardening composition
JPH1025457A (en) * 1996-07-12 1998-01-27 Kurosawa Kensetsu Kk Adhesive for joining concrete-base structural member and the like
JP2000044322A (en) * 1998-07-30 2000-02-15 Fujimori Kogyo Kk Hardenable composition and formation of water glass- blast furnace water-granulated slag-based hardened material

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