JP2018192692A - Floor decorative sheet and floor decorative material prepared therewith - Google Patents
Floor decorative sheet and floor decorative material prepared therewith Download PDFInfo
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- JP2018192692A JP2018192692A JP2017098108A JP2017098108A JP2018192692A JP 2018192692 A JP2018192692 A JP 2018192692A JP 2017098108 A JP2017098108 A JP 2017098108A JP 2017098108 A JP2017098108 A JP 2017098108A JP 2018192692 A JP2018192692 A JP 2018192692A
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- 239000011241 protective layer Substances 0.000 claims abstract description 16
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- 241000428199 Mustelinae Species 0.000 claims abstract description 12
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- 238000009408 flooring Methods 0.000 description 7
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- 239000004743 Polypropylene Substances 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
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- 238000007373 indentation Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 239000011120 plywood Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
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- 229920001225 polyester resin Polymers 0.000 description 4
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- 238000004040 coloring Methods 0.000 description 3
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 2
- 229920006223 adhesive resin Polymers 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
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- 239000003086 colorant Substances 0.000 description 2
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- 239000001023 inorganic pigment Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
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- 229920000178 Acrylic resin Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
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- 239000002344 surface layer Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Floor Finish (AREA)
- Laminated Bodies (AREA)
Abstract
Description
本発明は、住宅、店舗、事務所、体育館など用いられる床用化粧シート及びそれを用いた床用化粧材に関する。さらに詳しくは、耐衝撃性、耐キャスター性、生産性に優れた床用化粧シート及びそれを用いた床用化粧材に関するものである。 The present invention relates to a floor decorative sheet used for a house, a store, an office, a gymnasium, and the like, and a floor decorative material using the same. More specifically, the present invention relates to a floor decorative sheet excellent in impact resistance, caster resistance and productivity, and a floor decorative material using the same.
木質系基材からなる板張り様の床用化粧材としては、合板の表面に天然木をスライスしたいわゆる突き板を貼り、木工機械にて溝加工して、溝部を着色した後、紫外線硬化型塗料を塗布し硬化させたものが知られている。しかしながら、突き板が天然木のため、色がばらついたり、壁や天井、家具との色調の調和が困難であった。 As a veneer-like floor covering made of a wooden base material, a so-called veneer sliced from natural wood is pasted on the surface of plywood, grooved with a woodworking machine, the groove part is colored, and then an ultraviolet curable paint It is known that is applied and cured. However, because the veneer is a natural wood, the colors vary and it is difficult to harmonize the color with the walls, ceiling, and furniture.
また、木質系基材の表面に凹状溝を設け、凹状溝に導管着色合成樹脂塗料を塗布し、凹状溝以外の塗料を除去した後、木目柄導管凹部を形成し、凹状溝以外の木質系基材表面に透明合成樹脂塗料を塗布する方法が知られている。しかしながら、木質系基材と合成樹脂塗料からなる構成のため、キャスター付き椅子による傷付き耐性いわゆる耐キャスター性において問題があった（特許文献１）。 In addition, a concave groove is provided on the surface of the wood base material, and a colored pipe resin synthetic resin paint is applied to the concave groove, and after removing paint other than the concave groove, a wood grain conduit concave portion is formed, and the woody system other than the concave groove A method of applying a transparent synthetic resin paint to the substrate surface is known. However, because of the construction made of a wood-based substrate and a synthetic resin paint, there was a problem in the so-called caster resistance against scratching by a chair with casters (Patent Document 1).
また、木質系基材上に熱可塑性樹脂化粧シートを積層した床用化粧材も知られてる。しかしながら、熱可塑性樹脂化粧シートが厚すぎると、ウエーブ状（巻き状態）で巻き取りにくく、木質系基材との連続ラミネート時にライン上でシートカットが困難なものとなる。よって生産性が上がらないため、熱可塑性樹脂化粧シートと木質系基材とをラミネートする際には、予め木質系基材と同等の大きさにカットした熱可塑性樹脂化粧シートを準備して、枚葉方式で、１枚１枚積層するなどの方法をとらなければならなかった（特許文献２）。 Further, a flooring decorative material in which a thermoplastic resin decorative sheet is laminated on a wooden base material is also known. However, if the thermoplastic resin decorative sheet is too thick, it will be difficult to wind in a wave shape (rolled state), and sheet cutting will be difficult on the line during continuous lamination with a woody base material. Therefore, since productivity does not increase, when laminating a thermoplastic resin decorative sheet and a wooden base material, prepare a thermoplastic resin decorative sheet that has been cut in the same size as the wooden base material in advance. A method such as laminating one by one using the leaf method had to be taken (Patent Document 2).
一方、マルテンス硬さ試験は、ユニバーサル硬度ともいわれ、皮膜の硬さと物性を圧子押し込み深さを直読することにより硬さ評価する試験器を、ドイツ国のＨｅｌｍｕｔ Ｆｉｓｃｈｅｒ ＧｍｂＨ社が開発したものである。この試験機をベースに１９９７年ドイツ規格ＤＩＮ５０３５９でインデンテーションテスト（物質の硬さや弾性率1、降伏応力などの力学物性をナノメートルスケールで測る技術）がユニバーサル硬さ（ＨＵ）として世界で初めて工業規格化された。さらに２００２年インデンテーション法がＤＩＮ５０３５９からＩＳＯ ＥＮ ＤＩＮ １４５７７で国際規格化され、名称がユニバーサル硬さ（ＨＵ）からマルテンス硬さ（ＨＭ）に変更された経緯があり、ＪＩＳ Ｚ ２２５５：２００３としても知られている。 On the other hand, the Martens hardness test, also referred to as universal hardness, was developed by Helmut Fischer GmbH in Germany to test the hardness and physical properties of the coating by indenting the indenter and directly reading the hardness. Based on this testing machine, the 1997 German standard DIN50359 indentation test (a technology that measures the physical properties of materials such as hardness, elastic modulus 1, yield stress, etc. on the nanometer scale) is the world's first industrial industry with universal hardness (HU). Standardized. In 2002, the indentation method was internationally standardized from DIN 50359 to ISO EN DIN 14577, and the name was changed from Universal Hardness (HU) to Martens Hardness (HM), also known as JIS Z 2255: 2003. It has been.
このような背景に対して、マルテンス硬さは皮膜の硬さの指標としては機能しているも、耐衝撃性、耐キャスター性との関係は必ずしも明らかではなく、床用化粧シート及びそれを用いた床用化粧材の、客観的数値に基づいた品質設計は未着手の状態であった。そのため、耐衝撃性、耐キャスター性により優れた床用化粧シート及びそれを用いた床用化粧材の実現が待たれていた。 Against such a background, Martens hardness functions as an index of film hardness, but the relationship between impact resistance and caster resistance is not always clear. The quality design based on the objective numerical values of the flooring materials used was not yet under way. Therefore, the realization of a floor decorative sheet excellent in impact resistance and caster resistance and a floor decorative material using the same has been awaited.
本発明はこのような状況に鑑みてなされたものであり、その課題とするところは、意匠性に優れ、また色調の調整が容易であり、かつ耐キャスター性、耐衝撃性に優れた、床用化粧シート及びそれを用いた床用化粧材を提供することにある。 The present invention has been made in view of such a situation, and the problem is that the floor is excellent in design, easy to adjust the color tone, and excellent in caster resistance and impact resistance. It is providing the decorative sheet for floors, and the decorative material for floors using the same.
上記の課題を解決するための手段として、請求項１に記載の発明は、少なくとも、絵柄層を設けた熱可塑性樹脂層を基材として、透明熱可塑性樹脂層、表面保護層、を積層してなる床用化粧シートにおいて、
該表面保護層が硬化型樹脂からなり、マルテンス硬さ（ＩＳＯ １４５７７ ２００２）が１７１Ｎ／ｍｍ２から２４０Ｎ／ｍｍ２の範囲であることを特徴とする床用化粧シートである。
As means for solving the above-mentioned problems, the invention according to claim 1 is characterized in that at least a thermoplastic resin layer provided with a pattern layer is used as a base material, and a transparent thermoplastic resin layer and a surface protective layer are laminated. In the floor decorative sheet
Surface protective layer is a cured resin, a floor decorative sheet Martens hardness (ISO 14577 2002) is characterized by a range of 171n / mm 2 of 240 N / mm 2.
また、請求項２に記載の発明は、請求項１記載の床用化粧シートを用い、木質系基材上に積層してなることを特徴とする床用化粧材である。 The invention according to claim 2 is a decorative material for floor, wherein the decorative sheet for floor according to claim 1 is laminated on a wooden base material.
本発明によれば、意匠性に優れ、また色調の調整が容易であり、かつ耐キャスター性、耐衝撃性に優れた、床用化粧シート及びそれを用いた床用化粧材を提供することが可能である。 According to the present invention, it is possible to provide a decorative sheet for floor and a decorative material for floor using the same, which are excellent in design properties, easy to adjust the color tone, and excellent in castor resistance and impact resistance. Is possible.
以下、本発明を図を参照しながら、更に詳しい説明を加える。ただし本発明は、ここに示す例にのみ限定されるものではない。本発明は、請求項によって限定されるものである。 Hereinafter, the present invention will be described in more detail with reference to the drawings. However, the present invention is not limited to the examples shown here. The invention is limited only by the following claims.
図１は本発明に係る、床用化粧シート及びそれを用いた床用化粧材の一実施態様を説明するための部分断面模式図である。 FIG. 1 is a partial cross-sectional schematic view for explaining one embodiment of a floor decorative sheet and a floor decorative material using the same according to the present invention.
床用化粧材３０は、木質系基材１と、床用化粧シート２０とを、接着剤層２を介して積層したものである。ここに示す例において床用化粧シート２０は、バッカー層３、接着剤層Ｂ４、熱可塑性樹脂層５、絵柄層６、透明熱可塑性樹脂層７、表面保護層８、から構成されている。また、図には示していないが、必要に応じて床用化粧材３０には、Ｕ字溝、Ｖ字溝を設けても良い。 The floor decorative material 30 is obtained by laminating a wood base material 1 and a floor decorative sheet 20 with an adhesive layer 2 interposed therebetween. In the example shown here, the floor decorative sheet 20 is composed of a backer layer 3, an adhesive layer B 4, a thermoplastic resin layer 5, a pattern layer 6, a transparent thermoplastic resin layer 7, and a surface protective layer 8. Although not shown in the drawing, the floor decorative material 30 may be provided with a U-shaped groove and a V-shaped groove as necessary.
木質系基材１としては、南洋材合板、パーティクルボード、中密度繊維板（以後ＭＤＦ）、日本農林規格に規定される普通合板が使用可能である。また、木紛添加オレフィン系樹脂からなる木質系基材も使用可能である。厚みは３〜２５ｍｍ程度が好適である。 As the woody base material 1, south plywood plywood, particle board, medium density fiber board (hereinafter MDF), or normal plywood stipulated in Japanese Agricultural Standard can be used. Moreover, the woody base material which consists of wood powder addition olefin resin can also be used. The thickness is preferably about 3 to 25 mm.
接着剤層Ａ２や接着剤層Ｂ４としては、公知の２液ウレタン樹脂接着剤、２液のウレタン変性ビニル樹脂水性接着剤や１液酢酸ビニル樹脂エマルジョン系接着剤、湿気硬化型ウレタン樹脂系ホットメルト接着剤等が使える。また熱可塑性樹脂ホットメルト接着剤も使える。接着剤層２の塗布量は、乾燥後の重さが、３〜２０ｇ／ｍ２程度が接着性の観点から好ましい。 Adhesive layer A2 and adhesive layer B4 include known two-component urethane resin adhesives, two-component urethane-modified vinyl resin aqueous adhesives, one-component vinyl acetate resin emulsion adhesives, and moisture-curing urethane resin hot melts. Adhesives can be used. A thermoplastic resin hot melt adhesive can also be used. As for the application amount of the adhesive layer 2, the weight after drying is preferably about 3 to 20 g / m 2 from the viewpoint of adhesiveness.
バッカー層３としては、積層後の床用化粧材のデュポン式衝撃落下試験（ＪＩＳ Ｋ ５４００−１９９０）後の凹みが０．７ｍｍ以下になる程度の材質と厚みのものを用いる
ことができる。デュポン式衝撃落下試験（ＪＩＳ Ｋ ５４００−１９９０）は、本来は塗膜の評価法であるが、本発明者らはこれにより床用化粧材の凹み量を測定することで容易に有効な床用化粧材の限定が可能となることを見出した。厚みは、材質との組み合わせで層としての強度と前記性能を有する程度に厚ければ良く、製造適性と後加工適性を有する程度に薄ければよい。おおよそ５０〜２００μｍ程度が好適である。材質としては、ポリブチレンテレフタレート、非結晶性ポリエステル樹脂、ポリプロピレン樹脂などが使用可能である。またこれらは単体でも複数枚重ねても良い。
The backer layer 3 may be made of a material and a thickness so that the dent after the DuPont impact drop test (JIS K 5400-1990) of the laminated flooring material is 0.7 mm or less. The DuPont impact drop test (JIS K 5400-1990) is originally an evaluation method for a coating film, but the present inventors can easily and effectively use it for a floor by measuring the amount of dents in the decorative material for flooring. It was found that it is possible to limit the cosmetic material. The thickness only needs to be thick enough to have the strength and the performance as a layer in combination with the material, and thin enough to have manufacturing suitability and post-processing suitability. About 50-200 micrometers is suitable. As a material, polybutylene terephthalate, amorphous polyester resin, polypropylene resin, or the like can be used. These may be used alone or in a plurality.
床用化粧シート２０の熱可塑性樹脂層５および透明熱可塑性樹脂層７としては、非晶状態の結晶性ポリエステル樹脂、非結晶性ポリエステル樹脂、２軸延伸ポリエステル樹脂、ポリプロピレン樹脂、ポリエチレン樹脂などからなる単層あるいは複数の層からなるものが好適に用いられる。特に熱可塑性樹脂層５は着色したものを用いることができ、絵柄層６を設けてから上面に透明熱可塑性樹脂層７（ポリプロピレン樹脂）を設けることができる。床用化粧シート２０の厚みは、耐キャスター性、耐衝撃性、耐傷付き性、ハンドリング性、刃物摩滅度などを考慮すると、５０〜２００μｍが望ましい。絵柄層６としては、公知の不透明な無機、有機顔料からなる２液のウレタン系樹脂バインダー、アクリル樹脂と塩化ビニル−酢酸ビニル樹脂共重合体等からなるグラビアインキが使用可能である。印刷手法を用いることによって、天然素材を用いる場合に比べて色調の調整や安定化は容易となる。 The thermoplastic resin layer 5 and the transparent thermoplastic resin layer 7 of the decorative sheet 20 for floor are made of an amorphous crystalline polyester resin, an amorphous polyester resin, a biaxially stretched polyester resin, a polypropylene resin, a polyethylene resin, or the like. A single layer or a plurality of layers is preferably used. In particular, the thermoplastic resin layer 5 may be colored, and the transparent thermoplastic resin layer 7 (polypropylene resin) may be provided on the upper surface after the pattern layer 6 is provided. The thickness of the decorative sheet for floor 20 is preferably 50 to 200 μm in consideration of caster resistance, impact resistance, scratch resistance, handling properties, blade abrasion, and the like. As the pattern layer 6, a known two-component urethane resin binder made of an opaque inorganic or organic pigment, a gravure ink made of an acrylic resin and a vinyl chloride-vinyl acetate resin copolymer, or the like can be used. By using a printing method, it is easier to adjust and stabilize the color tone than when using a natural material.
また、表面保護層８として、すべり性を考慮して紫外線吸収剤、光安定剤、ガラスビーズなどが添加された紫外線硬化型樹脂や２液ウレタン樹脂を６〜１５ｇ／ｍ２塗布しても良い。この場合、耐衝撃性試験、耐キャスター性試験の復元性を考慮に入れて、表面硬度を調節することが望ましい。 Further, as the surface protective layer 8, 6 to 15 g / m 2 of an ultraviolet curable resin or a two-component urethane resin to which an ultraviolet absorber, a light stabilizer, glass beads and the like are added in consideration of slipperiness may be applied. . In this case, it is desirable to adjust the surface hardness in consideration of the resilience of the impact resistance test and caster resistance test.
また、床用化粧シート２０に金属ロールなどからなるエンボス版を押し当てて、溝加工等を施してもよい。凹部の溝部を着色をする場合、凹部着色インキ層は、公知の不透明な無機、有機顔料からなる１液、又は２液のウレタン系樹脂バインダーからなるグラビアインキが使用可能である。 Further, an embossed plate made of a metal roll or the like may be pressed against the decorative sheet 20 for flooring to give a groove. When coloring the groove part of a recessed part, the recessed coloring ink layer can use the gravure ink which consists of a well-known opaque inorganic and organic pigment 1 liquid, or 2 liquid urethane type resin binders.
このように、本発明によれば、意匠性に優れ、また色調の調整が容易であり、かつ耐キャスター性、耐衝撃性に優れた、床用化粧シート及びそれを用いた床用化粧材を提供することが可能である。 Thus, according to the present invention, a decorative sheet for floor and a decorative material for floor using the same, which are excellent in design and easy to adjust the color tone and excellent in castor resistance and impact resistance, are provided. It is possible to provide.
以下本発明を、実施例によって更に具体的な説明を加える。ただし本発明は、ここに示す例にのみ限定されるものではない。本発明は、請求項によって限定されるものである。 Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to the examples shown here. The invention is limited only by the following claims.
＜実施例１＞
熱可塑性樹脂層５として、厚さ７０μｍの着色エチレンフィルム（リケンテクノス（株）製「リベスターＴＰＯ」）の片面に、グラビアインキ（東洋インキ製造（株）製「ラミスター」）で木目柄をグラビア印刷機により印刷した。その後、印刷を施した面とは逆の面にシリカ粉末を含有する２液ウレタン系プライマー樹脂を乾燥後の厚みが１μｍとなるようにグラビア塗工した。
<Example 1>
A gravure printing machine with gravure ink (“Lamister” manufactured by Toyo Ink Co., Ltd.) on one side of a colored ethylene film (“Rivestar TPO” manufactured by Riken Technos Co., Ltd.) having a thickness of 70 μm as the thermoplastic resin layer 5 Printed by Thereafter, a two-component urethane primer resin containing silica powder on the surface opposite to the printed surface was applied with a gravure so that the thickness after drying was 1 μm.
前記印刷を施した面上に、アンカー剤としてポリエステルポリオールと硬化剤としてイソホロンジイソシアネートの２液ウレタン樹脂系接着剤を乾燥後の塗布量が１ｇ／ｍ２になるように塗工し、さらにこの上に、透明熱可塑性樹脂層７としてホモポリプロピレン５０部、ランダムポリプロピレン５０部の混合物に紫外線吸収剤０．５部、ヒンダードアミン系光安定剤０．５部、熱安定剤０．２部を添加してマレイン酸変成したポリプロピレン系樹脂を乾燥後の厚みが８０μｍとなるようにした。さらに同時にその上に接着性樹脂を乾燥後の厚みが１０μｍとなるようにして、オゾンガスを吹き付けながら共押出しラミネートした。以上のようにして熱可塑性樹脂化粧シートを得た。 On the printed surface, a two-component urethane resin adhesive of polyester polyol as an anchor agent and isophorone diisocyanate as a curing agent is applied so that the coating amount after drying becomes 1 g / m 2. In addition, as a transparent thermoplastic resin layer 7, a mixture of 50 parts of homopolypropylene and 50 parts of random polypropylene was added with 0.5 part of an ultraviolet absorber, 0.5 part of a hindered amine light stabilizer, and 0.2 part of a heat stabilizer. The thickness of the maleic acid-modified polypropylene resin after drying was set to 80 μm. At the same time, the adhesive resin was coextruded and laminated while spraying ozone gas so that the thickness after drying the adhesive resin was 10 μm. A thermoplastic resin decorative sheet was obtained as described above.
前記床用化粧シート２０の共押出ラミネート面上に、乾燥後の厚みが１ｇ／ｍ２となるように２液ウレタン樹脂からなるリコート層を設け、その後、表面保護層８としてウレタンアクリレート（ダイセル・ユーシービー（株）製「Ｅｂｅｃｒｙｌ４８５８」）１００部とペンタエリスリトールテトラアクリレート（ダイセル・ユーシービー（株）製「ＰＥＴＡ−Ｋ」）２０部、ベンゾフェノン系光開始剤（ダイセル・ユーシービー（株）製「Ｅｂｅｃｒｙｌ ＢＺＯ」）０．５部、ベンゾトリアゾール系紫外線吸収剤０．５部、ヒンダードアミン系光安定剤０．５部、ガラスビーズ２部を添加した紫外線硬化型樹脂を厚さ５μｍとなるように塗布し、メタルハライドランプによる紫外線照射により硬化させて表面保護層８を設けた。 On the coextruded laminate surface of the floor decorative sheet 20, a recoat layer made of a two-component urethane resin is provided so that the thickness after drying is 1 g / m 2, and then urethane acrylate (Daicel 100 parts of “Ebecryl 4858” manufactured by UCB Co., Ltd., 20 parts of pentaerythritol tetraacrylate (“PETA-K” manufactured by Daicel UCB Co., Ltd.), a benzophenone photoinitiator (manufactured by Daicel UCB Co., Ltd.) Ebecryl BZO ”) 0.5 part, 0.5 part of benzotriazole UV absorber, 0.5 part of hindered amine light stabilizer and 2 parts of glass beads were applied to a thickness of 5 μm. Then, the surface protective layer 8 was provided by curing by ultraviolet irradiation with a metal halide lamp.
この表面保護層８を設けた熱可塑性樹脂化粧シート４のグラビア塗工した面に、２液ウレタン樹脂接着剤（東洋モートン（株）製「ＴＭ−５９３」）を乾燥後の塗布量が１０ｇ／ｍ２になるように塗工し、この面に透明ポリブチレンテレフタレート樹脂製のバッカー層３となる厚み１９０μｍを、ドライラミネートして巻き取った。 The coating amount after drying a two-component urethane resin adhesive (“TM-593” manufactured by Toyo Morton Co., Ltd.) on the gravure-coated surface of the thermoplastic resin decorative sheet 4 provided with the surface protective layer 8 is 10 g / The film was coated so as to be m 2 , and a thickness of 190 μm to be a backer layer 3 made of a transparent polybutylene terephthalate resin was dry-laminated and wound on this surface.
その後、木質系基材１として厚み１２ｍｍ×３０３ｍｍ×１８１８ｍｍのラワン合板を用い、２液水性エマルジョン接着剤（中央理化工業（株）製「リカボンド」（ＢＡ−１０Ｌ／ＢＡ−１１Ｂ＝１００／５））をウエット状態で１００ｇ／ｍ２塗工したあと、先のドライラミネートした金属中間層３側とをラミネータにて貼り合わせ、１２時間養生後、端部の実加工及び木質系基材まで達する溝加工をした後、２液ウレタン樹脂着色剤にて目地着色を行い、床用化粧材を得た。 Thereafter, a lauan plywood having a thickness of 12 mm × 303 mm × 1818 mm was used as the wood-based substrate 1, and a two-part aqueous emulsion adhesive (“Rikabond” manufactured by Chuo Rika Kogyo Co., Ltd. (BA-10L / BA-11B = 100/5)) ) after 100 g / m 2 coated at a wet state, bonding the above metallic intermediate layer 3 side were dry laminate in the laminator, after 12 hours curing, grooves reaching to machining and woody substrate end After processing, joint coloring was performed with a two-component urethane resin colorant to obtain a flooring decorative material.
＜実施例２＞
表面保護層８のペンタエリスリトールテトラアクリレート（ダイセル・ユーシービー（株）製「ＰＥＴＡ−Ｋ」）１５重量部、マルテンス硬さを１７１Ｎ／ｍｍ２にした以外は実施例１と同じとした。
<Example 2>
The same procedure as in Example 1 was performed except that 15 parts by weight of pentaerythritol tetraacrylate ("PETA-K" manufactured by Daicel UCB Co., Ltd.) of the surface protective layer 8 and the Martens hardness were 171 N / mm 2 .
＜実施例３＞
表面保護層８のペンタエリスリトールテトラアクリレート（ダイセル・ユーシービー（株）製「ＰＥＴＡ−Ｋ」）１０重量部、ガラスビーズ４重両部、マルテンス硬さを２４０Ｎ／ｍｍ２にした以外は実施例１と同じ床用化粧材３０を作製した。
<Example 3>
Example 1 except that 10 parts by weight of pentaerythritol tetraacrylate (“PETA-K” manufactured by Daicel UCB Co., Ltd.) of the surface protective layer 8, quadruple glass beads, and Martens hardness of 240 N / mm 2 were used. The same floor decorative material 30 was prepared.
＜比較例１＞
表面保護層のペンタエリスリトールテトラアクリレート（ダイセル・ユーシービー（株）製「ＰＥＴＡ−Ｋ」）２５重量部、ガラスビーズ０重両部、マルテンス硬さを１５０Ｎ／ｍｍ２にした以外は実施例１と同じようにして床用化粧材３０を作製した。
<Comparative Example 1>
Example 1 except that 25 parts by weight of the surface protective layer pentaerythritol tetraacrylate (“PETA-K” manufactured by Daicel UCB Co., Ltd.), double glass beads, and Martens hardness of 150 N / mm 2 were used. In the same manner, a floor decorative material 30 was produced.
＜比較例２＞
表面保護層のペンタエリスリトールテトラアクリレート（ダイセル・ユーシービー（株）製「ＰＥＴＡ−Ｋ」）５重量部、ガラスビーズ５重両部、マルテンス硬さを３００Ｎ／ｍｍ２にした以外は実施例１と同じようにして床用化粧材３０を作製した。
<Comparative Example 2>
Example 1 except that the surface protective layer pentaerythritol tetraacrylate ("PETA-K" manufactured by Daicel UCB Co., Ltd.) 5 parts by weight, glass beads 5 parts both, and Martens hardness 300N / mm 2 In the same manner, a floor decorative material 30 was produced.
＜性能試験１＞
耐衝撃性試験として、デュポン式落球試験（ＪＩＳ Ｋ ５４００）に準拠して試験を行い、凹み量の測定を行った。
デュポン式衝撃落下試験（ＪＩＳ Ｋ ５４００：１９９０））。表面層のクラックの外
観観察を行なった。
クラックが微小：〇
クラックが明瞭：×とした。
<Performance test 1>
As an impact resistance test, a test was performed in accordance with a DuPont falling ball test (JIS K 5400), and the amount of dents was measured.
DuPont impact drop test (JIS K 5400: 1990)). The appearance of cracks in the surface layer was observed.
Small cracks: ○ Clear cracks: x.
＜性能試験２＞
耐キャスター性試験として、ポリカーボネート製のダブルキャスター（直径４０ｍｍ、１輪の幅９ｍｍ、２輪間の幅１８ｍｍ）に２５ｋｇの重りで荷重をかけ（約２４５Ｎ）、１万回（１ストローク２０ｃｍ以上、５千往復）、キャスターを速度２０ｃｍ／秒で床用化粧材上で動かした。
ポリカーボネート製のダブルキャスター（直径４０ｍｍ、１輪の幅９ｍｍ、２輪間の幅１８ｍｍ）に２５ｋｇの重りで荷重をかけ（約２４５Ｎ）、１万回（１ストローク２０ｃｍ以上、５千往復）、キャスターを速度２０ｃｍ／秒で床用化粧材上で動かした。評価は外観を観察した。
実用上問題なし：〇
実用上問題あり：×とした。
<Performance test 2>
As a caster resistance test, a polycarbonate double caster (diameter 40 mm, 1 wheel width 9 mm, 2 wheel width 18 mm) was loaded with a weight of 25 kg (about 245 N), 10,000 times (1 stroke 20 cm or more, 5,000 reciprocations), and the caster was moved on the floor decorative material at a speed of 20 cm / sec.
A polycarbonate double caster (diameter 40 mm, width 9 mm for one wheel, width 18 mm between wheels) is loaded with a weight of 25 kg (about 245 N), 10,000 times (1 stroke 20 cm or more, 5,000 reciprocations), caster Was moved on the floor decorative material at a speed of 20 cm / sec. In the evaluation, the appearance was observed.
No practical problem: ○ Practical problem: x.
＜マルテンス硬さ測定方法＞
ＩＳＯ １４５７７：２００２に準拠した。
装置名：マイクロレンジ押し込み硬さ試験機、
型式：ＨＭ−２０００ＸＹｐ、
株式会社フィッシャー・インストルメント製、
圧子：ベルコビッチ圧子、
圧子の試料と接する部分の形状：りょう間角が１１５°の三角錐、
試料への押し込みサイクル：０〜２ｍＮ負荷２秒、押し込みクリープを２ｍＮで５秒間、引き抜きを２〜０ｍＮ、
試料への押し込み回数：顕微鏡で試料の測定位置を決め、圧子の位置をずらしていき、５箇所測定し平均値を求めた。
<Martens hardness measurement method>
Compliant with ISO 14577: 2002.
Device name: Micro range indentation hardness tester,
Model: HM-2000XYp,
Made by Fisher Instrument Co., Ltd.
Indenter: Belkovic indenter,
The shape of the portion of the indenter that contacts the sample: a triangular pyramid with a 115 ° clearance angle,
Indentation cycle to sample: 0-2 mN load for 2 seconds, indentation creep at 2 mN for 5 seconds, withdrawal at 2-0 mN,
Number of times of pressing into the sample: The measurement position of the sample was determined with a microscope, the position of the indenter was shifted, and five points were measured to obtain an average value.
試験結果を表１に示す。 The test results are shown in Table 1.
評価基準：各試験項目ごとに〇を合格、×を不合格とした。
各試験項目のいずれも合格であるものを、総合評価で〇とし、それ以外を×とした。
Evaluation criteria: ○ was accepted and x was rejected for each test item.
Those that passed all of the test items were evaluated as “good” in the overall evaluation, and “otherwise” as “x”.
以上に示したように、本発明は床用化粧シートの硬化型樹脂からなる表面保護層のマルテンス硬さを１７１Ｎ／ｍｍ２から２４０Ｎ／ｍｍ２の範囲内に設けることで、耐衝撃性に優れた床用化粧材を得ることができた。 As indicated above, the present invention is by providing the Martens hardness of the surface protective layer made of floor decorative sheet curable resin within a range from 171n / mm 2 of 240 N / mm 2, excellent impact resistance A flooring decorative material was obtained.
すなわち、本発明によれば、色調の調整が容易であり、かつ耐キャスター性、耐衝撃性に優れた、床用化粧シート及びそれを用いた床用化粧材を提供することが可能であることを検証することができた。 That is, according to the present invention, it is possible to provide a decorative sheet for floor and a decorative material for floor using the same, which can easily adjust the color tone and have excellent caster resistance and impact resistance. Could be verified.
１…木質系基材
２…接着剤層Ａ
３…バッカー層
４…接着剤層Ｂ
５…熱可塑性樹脂層
６…絵柄層
７…透明熱可塑性樹脂層
８…表面保護層
２０…床用化粧シート
３０…床用化粧材
1 ... Wooden base material 2 ... Adhesive layer A
3 ... Backer layer 4 ... Adhesive layer B
DESCRIPTION OF SYMBOLS 5 ... Thermoplastic resin layer 6 ... Picture layer 7 ... Transparent thermoplastic resin layer 8 ... Surface protective layer 20 ... Floor decorative sheet 30 ... Floor decorative material
Claims (2)
該表面保護層が硬化型樹脂からなり、マルテンス硬さ（ＩＳＯ １４５７７ ２００２）が１７１Ｎ／ｍｍ２から２４０Ｎ／ｍｍ２の範囲であることを特徴とする床用化粧シート。 At least in a decorative sheet for floors formed by laminating a transparent thermoplastic resin layer and a surface protective layer, using a thermoplastic resin layer provided with a pattern layer as a base material,
Surface protective layer is a cured resin, floor decorative sheet Martens hardness (ISO 14577 2002) is characterized by a range of 171n / mm 2 of 240 N / mm 2.
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| JP2013072206A (en) * | 2011-09-27 | 2013-04-22 | Dainippon Printing Co Ltd | Decorative material for floor |
| JP2017047573A (en) * | 2015-08-31 | 2017-03-09 | 凸版印刷株式会社 | Decorative sheet |
| WO2017038843A1 (en) * | 2015-08-31 | 2017-03-09 | 凸版印刷株式会社 | Decorative sheet and method for manufacturing decorative sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2020163850A (en) * | 2019-03-28 | 2020-10-08 | 大日本印刷株式会社 | Decorative sheet, and decorative plate using the same |
| JP7459581B2 (en) | 2019-03-28 | 2024-04-02 | 大日本印刷株式会社 | Decorative sheet and decorative board using same |
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