JP6115068B2 - Flooring - Google Patents
Flooring Download PDFInfo
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- JP6115068B2 JP6115068B2 JP2012224901A JP2012224901A JP6115068B2 JP 6115068 B2 JP6115068 B2 JP 6115068B2 JP 2012224901 A JP2012224901 A JP 2012224901A JP 2012224901 A JP2012224901 A JP 2012224901A JP 6115068 B2 JP6115068 B2 JP 6115068B2
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- 238000009408 flooring Methods 0.000 title claims description 39
- 239000000463 material Substances 0.000 claims description 32
- 235000019589 hardness Nutrition 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000010410 layer Substances 0.000 description 70
- 238000009413 insulation Methods 0.000 description 18
- 229920005989 resin Polymers 0.000 description 13
- 239000011347 resin Substances 0.000 description 13
- 238000005520 cutting process Methods 0.000 description 8
- 239000012790 adhesive layer Substances 0.000 description 7
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 239000004831 Hot glue Substances 0.000 description 4
- -1 MDF Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000013008 moisture curing Methods 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000004230 Fast Yellow AB Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 235000019615 sensations Nutrition 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920006352 transparent thermoplastic Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Floor Finish (AREA)
Description
本発明は屋内や屋外の建造物床面に敷設して用いる床材に関するものであって、特に床衝撃音遮断性能（遮音性）を持ち、かつ歩行感が良好なクッション性を有する床材に関する。 The present invention relates to a flooring material that is used by being laid on an indoor or outdoor building floor, and particularly relates to a flooring material having a floor impact sound insulation performance (sound insulation property) and a cushioning property with a good walking feeling. .
近年の屋内床面にはフローリング材が多く用いられている。フローリング材には、合板、ＭＤＦ、パーチクルボード、樹脂板などに塗装したものや、化粧シートをラミネートしたものなどが知られている。 In recent years, flooring materials are often used for indoor floors. As the flooring material, a plywood, MDF, particle board, a resin plate, a laminate of a decorative sheet, and the like are known.
フローリング材には表面の耐傷付性、耐衝撃性が求められるあまり、基材となる合板、樹脂板などはより高密度で硬く、耐傷付性、耐衝撃性に優れたものが使われるようになってきた。しかし、それら高強度の基材は床衝撃音遮断性能（遮音性）が著しく低い。 Flooring materials are required to have scratch resistance and impact resistance on the surface, so that plywood and resin boards that are base materials are harder and denser, and those with excellent scratch resistance and impact resistance should be used. It has become. However, these high-strength base materials have extremely low floor impact sound insulation performance (sound insulation).
また一方で、近年増加しつつあるマンション等の高層集合住宅の需要とともに、上層／下層住民間のトラブルを避けるため、床材には床衝撃音遮断性能（遮音性）が求められることが多くなってきている。 On the other hand, with the increasing demand for high-rise apartment buildings such as condominiums in recent years, floor impact sound insulation performance (sound insulation) is often required for flooring materials in order to avoid troubles between upper and lower residents. It is coming.
一般的に、床材の遮音性能の向上には、床材に対して溝を刻むことで剛性を下げる方法や床材裏面に連続気泡率の高い樹脂発泡体などの軟質層を設ける方法が知られている。（特許文献１、２） In general, to improve the sound insulation performance of flooring materials, there are known methods to reduce the rigidity by grooving the flooring material and to provide a soft layer such as a resin foam with a high open cell ratio on the backside of the flooring material. It has been. (Patent Documents 1 and 2)
しかしながら、この方法では軟質層がやわらかすぎるために、人間が踏み込んだときの床材の沈みこみ量が大きく、歩行感が著しく損なわれてしまう。 However, since the soft layer is too soft in this method, the amount of sinking of the flooring when a person steps on is large, and the feeling of walking is significantly impaired.
本発明はこのような問題点を解決するためになされたものであり、すなわちその課題とするところは、しっかりとした歩行感を有しつつ、十分な床衝撃音遮断性能（遮音性）を有する床材を提供することにある。 The present invention has been made in order to solve such problems. That is, the object of the present invention is to have a sufficient feeling of walking while having a sufficient floor impact sound blocking performance (sound insulation). To provide flooring.
本発明はこの課題を解決したものであり、すなわちその請求項１に記載の発明は、床面表面に敷設して用いる床材の、少なくとも表面側に硬質層、床面側に軟質層を設けてなる床材において、前記硬質層がＪＩＳ＿Ｋ＿７１７１に準拠して測定した曲げ弾性率が４００〜３０００ＭＰａであり、前記軟質層がＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さの異なる少なくとも２層以上からなるものであって、前記軟質層のうち最も柔らかい１層の圧縮硬さが５５〜７０Ｎであり、前記軟質層の総厚が４〜７ｍｍであり、かつ最も柔らかい１層の厚さが２〜５ｍｍであることを特徴とする床材。
である。
The present invention solves this problem, that is, the invention according to claim 1 is provided with a hard layer on at least the surface side and a soft layer on the floor surface side of the floor material laid and used on the floor surface. The flexural modulus measured according to JIS_K_7171 is 400 to 3000 MPa, and the soft layer is composed of at least two layers having different compression hardnesses measured according to the JIS_K_6400-2_D method. a is, Ri most compressive hardness of a soft one layer 55~70N der of the soft layer, the total thickness of the soft layer is 4 to 7 mm, and the thickness of the softest one layer 2~5mm flooring, characterized in der Rukoto.
It is.
また、その請求項２に記載の発明は、前記少なくとも２層以上からなる軟質層のうち最も硬い１層と最も柔らかい１層とのＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さの差が、５０〜１００Ｎであることを特徴とする請求項１に記載の床材である。 Further, in the invention according to claim 2, the difference in compression hardness measured according to the JIS_K_6400-2_D method between the hardest layer and the softest layer among the soft layers composed of at least two layers is 50- The flooring material according to claim 1, wherein the flooring material is 100N.
またその請求項３に記載の発明は、前記硬質層の裏面に溝を切削加工することを特徴とする請求項１または２に記載の床材である。
The invention described in the claim 3 is the flooring of claim 1 or 2, characterized in that cutting a groove in the rear surface of the hard layer.
本発明はその請求項１記載の発明により、所定の曲げ弾性率の硬質層と所定の圧縮硬さ、さらには所定の厚みを満たす少なくとも２層以上からなる軟質層を積層することにより、より良好なバランスで遮音性能と良好な歩行感を併せ持つ床材を提供することが可能となるという効果を奏する。
According to the first aspect of the present invention, a hard layer having a predetermined bending elastic modulus and a soft layer composed of at least two layers satisfying a predetermined compression hardness and further satisfying a predetermined thickness are more preferable. It is possible to provide a flooring material having both sound insulation performance and good walking feeling with a good balance.
本発明はその請求項２記載の発明により、所定の圧縮硬さを満たす少なくとも２層の軟質層を積層することで、より良好な歩行感と遮音性能を有する床材を提供することが可能となるという効果を奏する。 According to the second aspect of the present invention, it is possible to provide a flooring material having better walking feeling and sound insulation performance by laminating at least two soft layers satisfying a predetermined compression hardness. The effect of becoming.
本発明はその請求項３記載の発明により、硬質層の裏面に溝を切削加工することで、より良好な遮音性能を有する床材を提供することが可能となるという効果を奏する。 According to the third aspect of the present invention, there is an effect that it is possible to provide a flooring material having better sound insulation performance by cutting a groove on the back surface of the hard layer.
以下、本発明を図面に基づき詳細に説明する。図１に本発明の床材の一実施例の断面の構造を示す。床面１の上に、適宜設ける接着剤層２、２層以上からなる軟質層３１、３２、適宜設ける接着剤層４、硬質層５、適宜設ける接着剤層６と表面の化粧シート７とがこの順に設けられてなる。 Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional structure of an embodiment of the flooring of the present invention. On the floor surface 1, an adhesive layer 2 provided as appropriate, soft layers 31, 32 composed of two or more layers, an adhesive layer 4 provided as appropriate, a hard layer 5, an adhesive layer 6 provided as appropriate, and a decorative sheet 7 on the surface. They are provided in this order.
本発明における軟質層３１，３２に用いるものとしては、後述する硬質層５よりも柔らかいものであって、一番柔らかい軟質層のＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さが５５〜７０Ｎであるものを用いる。
この値の範囲内であれば、後述する硬質層５との組み合わせにより、床材がより良好なバランスで遮音性能と良好な歩行感を併せ持つものとすることが可能となる。圧縮硬さが５５Ｎより低ければ床材として柔らかすぎるために歩行感が著しく損なわれ、圧縮硬さが７０Ｎを超えれば床材として硬すぎるために遮音性能が低下してしまう。
What is used for the soft layers 31 and 32 in the present invention is softer than the hard layer 5 described later, and has a compression hardness of 55 to 70 N measured according to the JIS_K_6400-2_D method of the softest soft layer. Is used.
Within the range of this value, the combination with the hard layer 5 described later enables the flooring material to have both sound insulation performance and good walking feeling with a better balance. If the compression hardness is lower than 55N, the feeling of walking is remarkably impaired because the floor material is too soft, and if the compression hardness exceeds 70N, the sound insulation performance deteriorates because the floor material is too hard.
本発明者らはこの条件設定を見出すために試行錯誤したが、条件設定が決まっていれば、あとは従来公知の材料や製造技術により所望のものを調整して得ることは可能である。
具体的には厚み１〜７ｍｍより好ましくは２〜４ｍｍで発泡倍率が２０〜７０倍の発泡ポリウレタン系シートからなるものが好適に用いられる。
The present inventors have made trial and error to find this condition setting. However, if the condition setting is determined, it is possible to adjust and obtain a desired material by a conventionally known material or manufacturing technique.
Specifically, those made of a polyurethane foam sheet having a thickness of 1 to 7 mm, more preferably 2 to 4 mm and an expansion ratio of 20 to 70 times are suitably used.
前記少なくとも２層以上からなる軟質層のうち最も硬い１層と最も柔らかい１層とのＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さの差が、５０〜１００Ｎであることが好ましい。差が５０Ｎより少ないと、やわらかくなり過ぎてしまうために歩行感の低下を招く。また圧縮硬さの差が１００Ｎを超えると、固くなりすぎるために遮音性能に悪影響を及ぼしてしまう。 It is preferable that the difference in compression hardness measured according to the JIS_K_6400-2_D method between the hardest layer and the softest layer among the soft layers composed of at least two layers is 50 to 100N. If the difference is less than 50N, the feeling of walking is reduced because the difference becomes too soft. On the other hand, if the difference in compression hardness exceeds 100 N, the sound insulation performance is adversely affected because it becomes too hard.
また、前記少なくとも２層以上からなる軟質層の総厚が４〜７ｍｍであり、かつ最も柔らかい１層の厚さが２〜５ｍｍであることが好ましい。総厚が７ｍｍを超える、ないしはやわらかい側の軟質層の厚みが５ｍｍを超えると、人間が足を踏み込んだときの沈みこみ量が大きくなりすぎて歩行感が悪くなる。逆に総厚が４ｍｍに満たない、ないしはやわらかい側の軟質層の厚みが２ｍｍに満たないと、軟質層が硬すぎるために遮音性能が発揮できなくなってしまう。 The total thickness of the soft layer composed of at least two layers is preferably 4 to 7 mm, and the thickness of the softest layer is preferably 2 to 5 mm. If the total thickness exceeds 7 mm or the thickness of the soft layer on the soft side exceeds 5 mm, the amount of sinking when a person steps on becomes too large and the feeling of walking becomes worse. On the other hand, if the total thickness is less than 4 mm or the thickness of the soft layer on the soft side is less than 2 mm, the sound insulation performance cannot be exhibited because the soft layer is too hard.
適宜設ける接着剤層２、４、６としてはそれぞれ前記軟質層３１，３２や後述する硬質層５、化粧シート７とをそれぞれ接着可能とするものであれば特に限定されるものではない。具体的には２液ウレタン水性接着剤や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などがあげられるが、特には湿気硬化型ウレタン系ホットメルト接着剤が好適に用いられる。厚みとしては乾燥後で１０〜１００μｍ程度が好適である。 Adhesive layers 2, 4, and 6 that are appropriately provided are not particularly limited as long as they can bond the soft layers 31 and 32, the hard layer 5 and the decorative sheet 7 described later, respectively. Specific examples include a two-component urethane water-based adhesive, a one-component vinyl acetate resin emulsion-based adhesive, and a moisture-curable urethane resin-based hot-melt adhesive. Particularly, a moisture-curable urethane-based hot-melt adhesive is preferable. Used for. The thickness is preferably about 10 to 100 μm after drying.
本発明における硬質層５に用いるものとしては、ＪＩＳ＿Ｋ＿７１７１に準拠して測定した曲げ弾性率が４００〜３０００ＭＰａのものを用いる。硬質層の曲げ弾性率は遮音性能に大きく寄与し、３０００ＭＰａより硬ければ遮音性能が低下し、一方で４００ＭＰａよりも柔らかければ歩行感を著しく損なってしまうため、床材として適さないものとなる。本発明者らはこの条件設定を見出すために試行錯誤したが、条件設定が決まっていれば、あとは従来公知の材料や製造技術により所望のものを調整して得ることは可能である。具体的には、厚み３〜９ｍｍ程度で、タルクや木粉を含有した樹脂を溶融加熱混合したものを０〜２倍発泡したもの、あるいは中密度繊維板（ＭＤＦ）などが好適に用いられる。 As what is used for the hard layer 5 in this invention, the thing whose bending elastic modulus measured based on JIS_K_7171 is 400-3000 Mpa is used. The flexural modulus of the hard layer greatly contributes to the sound insulation performance, and if it is harder than 3000 MPa, the sound insulation performance is lowered. On the other hand, if it is softer than 400 MPa, the walking feeling is significantly impaired, so it becomes unsuitable as a flooring material. . The present inventors have made trial and error to find this condition setting. However, if the condition setting is determined, it is possible to adjust and obtain a desired material by a conventionally known material or manufacturing technique. Specifically, a resin obtained by melting and mixing a resin containing talc or wood powder with a thickness of about 3 to 9 mm, foamed 0 to 2 times, or a medium density fiberboard (MDF) is preferably used.
また、硬質層５の裏面には適宜溝を切削加工にて設けても良い。切削加工することは硬質層の剛性の低下を招くが、曲げ弾性率が請求項１にて規定される範囲内であれば安定感のある歩行感を担保でき、かつ、硬質層５の剛性を下げることによる遮音性能の向上が期待される。 Moreover, you may provide a groove | channel in the back surface of the hard layer 5 suitably by cutting. Although cutting causes a decrease in the rigidity of the hard layer, if the flexural modulus is within the range defined in claim 1, a stable walking feeling can be ensured, and the rigidity of the hard layer 5 can be increased. Lowering the sound insulation performance is expected.
表面の化粧シート７としては、床材に意匠性を付与する絵柄模様層、床材表面の耐傷性や各種物性を付与する表面保護層等からなる公知のものであれば適宜使用可能であり、特に限定しない。前記硬質層５が厚み３〜９ｍｍ程度で、タルクや木粉を含有した樹脂を溶融加熱混合したものを０〜２倍発泡したものであれば、ポリオレフィン系樹脂シートを基材シートとするものが好適に用いられる。 As the decorative sheet 7 on the surface, it can be appropriately used as long as it is a known one comprising a pattern layer for imparting design properties to the flooring, a surface protective layer for imparting scratch resistance and various physical properties to the flooring, There is no particular limitation. If the hard layer 5 has a thickness of about 3 to 9 mm, and is obtained by foaming a resin containing talc or wood powder that has been melt-heated and mixed 0 to 2 times, a polyolefin resin sheet is used as a base sheet. Preferably used.
＜硬質層５の作製＞
ポリオレフィン樹脂としてポリプロピレン（プライムポリマー（株）製「Ｅ１０５」）７０重量部を用い、これにタルク１０重量部、木粉２０重量部、重曹系発泡剤５重量部を２００℃設定で溶融加熱混合した。一方厚み５ｍｍ、巾１５０ｍｍ、本実形状金型を押出機の先端に取り付けておき、これを用いて前記溶融樹脂を発泡倍率１．６倍で押出し、冷却水を循環させた前記金型と同型の冷却金型に引き込み、冷却固化したのち９００ｍｍの長さに切断、堆積し、８０℃オーブンで６時間加熱した後外気冷却を行い、木質樹脂基材からなる硬質層５とした。この基材をＪＩＳ＿Ｋ＿７１７１に準拠して曲げ弾性率の測定を行ったところ、２１３２ＭＰａであった。
<Preparation of hard layer 5>
70 parts by weight of polypropylene (“E105” manufactured by Prime Polymer Co., Ltd.) was used as the polyolefin resin, and 10 parts by weight of talc, 20 parts by weight of wood flour, and 5 parts by weight of a baking soda-based foaming agent were melt-heated and mixed at 200 ° C. . On the other hand, the actual mold having a thickness of 5 mm and a width of 150 mm is attached to the tip of the extruder, and using this, the molten resin is extruded at an expansion ratio of 1.6 times, and the same mold as the mold in which cooling water is circulated. Then, after being cooled and solidified, it was cut and deposited to a length of 900 mm, heated in an oven at 80 ° C. for 6 hours, and then cooled with outside air to obtain a hard layer 5 made of a wood resin base material. When this substrate was measured for flexural modulus in accordance with JIS_K_7171, it was 2132 MPa.
＜溝の切削＞
前記硬質層５の裏面に対し、切削加工により２０ｍｍピッチで深さ２．０ｍｍ幅０．５ｍｍの溝を３６本設けた。この基材をＪＩＳ＿Ｋ＿７１７１に準拠して曲げ弾性率の測定を行ったところ、５４２ＭＰａであった。
<Cutting grooves>
Thirty-six grooves having a depth of 2.0 mm and a width of 0.5 mm were formed on the back surface of the hard layer 5 by a cutting process at a pitch of 20 mm. It was 542 MPa when the bending elastic modulus of this base material was measured based on JIS_K_7171.
＜軟質層の作製＞
（軟質層３１）としてＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さが６０Ｎ、厚さ４ｍｍの発泡ポリウレタンシート（（株）ブリヂストン製「ＣＦ４．０ｔ」）を用い、これに対して、（軟質層３２）としてＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さが１５０Ｎ、厚さ２ｍｍの発泡ポリウレタンシート（（株）ブリヂストン製「ＲＬ２．０ｔ」）を貼り合わせ、厚さ６ｍｍの軟質層とした。
<Production of soft layer>
As the (soft layer 31), a foamed polyurethane sheet (“CF4.0t” manufactured by Bridgestone Corporation) having a compression hardness of 60 N and a thickness of 4 mm measured according to the JIS_K — 6400-2_D method is used. ), A foamed polyurethane sheet having a compression hardness of 150 N and a thickness of 2 mm (“RL2.0t” manufactured by Bridgestone Corporation) measured according to the JIS_K — 6400-2_D method was bonded to form a soft layer having a thickness of 6 mm.
＜化粧シート７の作製＞
厚み０．０７０ｍｍのポリプロピレン樹脂製着色熱可塑性樹脂層（リケンテクノス（株）製「ＲＩＶＥＳＴ＿ＴＰＯ」）に絵柄模様層として２液ウレタン樹脂系バインダー樹脂製のグラビアインキにて木目柄を印刷し、その上に透明熱可塑性樹脂層として透明ポリプロピレン樹脂を押出しラミネートし、その上にリコート層として乾燥後の塗布量１．３ｇ／ｍ２の２液ウレタン樹脂を塗布し、その上に表面保護層として紫外線硬化型塗料を１０ｇ／ｍ２塗布、硬化させ、化粧シート７を得た。
<Preparation of decorative sheet 7>
Print a wood grain pattern with gravure ink made of two-component urethane resin binder resin as a pattern on a colored thermoplastic resin layer made of polypropylene resin (Riken Technos Co., Ltd. “RIVEST_TPO”) with a thickness of 0.070 mm. A transparent polypropylene resin is extruded and laminated as a transparent thermoplastic resin layer, a two-component urethane resin having a coating amount of 1.3 g / m 2 after drying is applied as a recoat layer thereon, and an ultraviolet curable type is applied as a surface protective layer thereon. The paint was applied and cured at 10 g / m 2 to obtain a decorative sheet 7.
＜床材の作製＞
前記化粧シート７の裏面に湿気硬化型ウレタン樹脂系ホットメルト接着剤（ＤＩＣ（株）製「タイフォース」）を５０μｍとなるように塗布し、前記硬質層５の表面に貼り合わせた。次に、硬質層５の裏面と＜軟質層の作製＞で得た複層発泡体の軟質層３１側とを、軟質層３１の表面に湿気硬化型ウレタン樹脂系ホットメルト接着剤（ＤＩＣ（株）製「タイフォース」）を５０μｍとなるように塗布し、貼り合わせ、床材を作製した。
<Fabrication>
A moisture-curing urethane resin hot melt adhesive (“Tyforce” manufactured by DIC Corporation) was applied to the back surface of the decorative sheet 7 to a thickness of 50 μm, and bonded to the surface of the hard layer 5. Next, the back surface of the hard layer 5 and the soft layer 31 side of the multi-layer foam obtained in <Preparation of Soft Layer> are attached to the surface of the soft layer 31 with a moisture-curing urethane resin hot melt adhesive (DIC Corporation). ) “Tie Force”) was applied to a thickness of 50 μm and bonded to prepare a flooring.
＜溝の切削＞を行わなかった以外は実施例１と同様にして床材を得た。 A flooring was obtained in the same manner as in Example 1 except that <groove cutting> was not performed.
（軟質層３２）としてＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さが１２０Ｎである発泡ポリウレタンシート（（株）ブリヂストン製「ＶＶ４．０ｔ」）を用いた以外は実施例１と同様にして床材を得た。 A flooring material was prepared in the same manner as in Example 1 except that a foamed polyurethane sheet (“VV4.0t” manufactured by Bridgestone Corporation) having a compression hardness of 120 N measured according to the JIS_K_6400-2_D method was used as the (soft layer 32). Obtained.
（軟質層３１）の厚さを２ｍｍ、（軟質層３２）の厚さを４ｍｍとした以外は実施例１と同様にして床材を得た。 A flooring was obtained in the same manner as in Example 1 except that the thickness of (soft layer 31) was 2 mm and the thickness of (soft layer 32) was 4 mm.
＜比較例１＞
（軟質層３１）としてＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さが９０Ｎである発泡ポリウレタンシート（（株）ブリヂストン製「ＤＧ４．０ｔ」）を用いた以外は実施例１と同様にして床材を得た。
<Comparative Example 1>
A flooring material was prepared in the same manner as in Example 1 except that a foamed polyurethane sheet (“DG4.0t” manufactured by Bridgestone Corporation) having a compression hardness of 90 N measured according to the JIS_K — 6400-2_D method was used as the (soft layer 31). Obtained.
＜比較例２＞
（軟質層３１）としてＪＩＳ＿Ｋ＿６４００−２＿Ｄ法に従って測定した圧縮硬さが４０Ｎである発泡ポリウレタンシート（（株）ブリヂストン製「ＴＦ４．０ｔ」）を用いた以外は実施例１と同様にして床材を得た。
<Comparative example 2>
A flooring was prepared in the same manner as in Example 1 except that a foamed polyurethane sheet (“TF 4.0t” manufactured by Bridgestone Corporation) having a compression hardness of 40 N measured according to the JIS_K_6400-2_D method was used as the (soft layer 31). Obtained.
＜比較例３＞
（軟質層３２）として５ｍｍの発泡ポリウレタンシートを用い、軟質層の総厚を９ｍｍとした以外は実施例１と同様にして床材を得た。
<Comparative Example 3>
A flooring was obtained in the same manner as in Example 1 except that a 5 mm foamed polyurethane sheet was used as (soft layer 32) and the total thickness of the soft layer was 9 mm.
＜性能評価＞
実施例１〜４及び比較例１〜３の各々の床材について、下記に示す性能評価を行った。結果を表１に示す。
<Performance evaluation>
The performance evaluation shown below was performed about each flooring of Examples 1-4 and Comparative Examples 1-3. The results are shown in Table 1.
＜床衝撃音許容レベル＞
ＪＩＳ＿Ａ＿１４１８に準拠した方法で軽量床衝撃音レベルを測定し、許容レベルＬＬ−４０、４５を◎、ＬＬ−５０を○として評価した。
<Floor impact sound tolerance level>
The light floor impact sound level was measured by a method based on JIS_A_1418, and the acceptable levels LL-40 and 45 were evaluated as ◎ and LL-50 was evaluated as ◯.
＜歩き心地＞
各床材をコンクリートスラブ上に両面テープを用いて施工し、その上を実際に数人に歩いてもらうことで、床鳴りや歩行感、床の柔らかさについての官能評価を行った。全員が良いと評価したものを◎、良いと評価した人が多かったものを○とした。
<Walking comfort>
Each flooring was constructed on a concrete slab using double-sided tape, and several people actually walked on it to perform a sensory evaluation on floor noise, walking sensation, and floor softness. Those that were evaluated as good by all were evaluated as も の, and those that many evaluated as good were rated as ○.
＜耐荷重試験＞
重量物を長時間静置した場合に生じる沈み込み量の確認のために、耐荷重試験を次のような方法で実施した。実施例１〜４および比較例１〜３の床材から１００×１００ｍｍの試験片を切り出した後、それらの中央部の厚みを測定する。各試験片の中央部に２ｋｇｆ／ｃｍ２の荷重をかけたのち、一週間静置する。その後荷重を取り去り、再度中央部の厚みを測定し、試験前の厚みとの差を求めた。差が０．２ｍｍ以下のものを◎、差が０．３ｍｍ以下のものを○とした。以上の結果を表１に示す。
<Load test>
In order to confirm the amount of subsidence that occurs when a heavy object is left standing for a long time, a load resistance test was performed by the following method. After cutting out the test piece of 100x100mm from the flooring materials of Examples 1-4 and Comparative Examples 1-3, the thickness of those center parts is measured. A load of 2 kgf / cm 2 is applied to the center of each test piece, and then left to stand for one week. Thereafter, the load was removed, the thickness of the central portion was measured again, and the difference from the thickness before the test was determined. The difference is 0.2 mm or less, and the difference is 0.3 mm or less. The results are shown in Table 1.
本発明の床材は、本発明は屋内や屋外の建造物床面に敷設して利用可能である。 The flooring of the present invention can be used by laying it on an indoor or outdoor building floor.
１…床面
２…接着剤層
３１，３２…軟質層
４…接着剤層
５…硬質層
６…接着剤層
７…化粧シート
DESCRIPTION OF SYMBOLS 1 ... Floor surface 2 ... Adhesive layer 31, 32 ... Soft layer 4 ... Adhesive layer 5 ... Hard layer 6 ... Adhesive layer 7 ... Cosmetic sheet
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| CN107190933A (en) * | 2017-06-29 | 2017-09-22 | 苏州亨达尔工业材料有限公司 | A kind of composite decorative board |
| JP7114044B2 (en) * | 2018-02-07 | 2022-08-08 | 岐阜プラスチック工業株式会社 | sound absorbing structure |
| JP7501829B2 (en) * | 2019-04-25 | 2024-06-18 | 大成建設株式会社 | Floor impact sound reduction floors, floor impact sound reduction sheets, and floor impact sound reduction mats |
| JP7427954B2 (en) * | 2019-12-17 | 2024-02-06 | Ｔｏｐｐａｎホールディングス株式会社 | flooring |
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| JP3476323B2 (en) * | 1997-01-31 | 2003-12-10 | 積水化学工業株式会社 | Floor material |
| JP3600726B2 (en) * | 1998-03-27 | 2004-12-15 | 積水化学工業株式会社 | Floor materials and apartment houses using the same |
| JP2000039165A (en) * | 1998-07-27 | 2000-02-08 | Sekisui Chem Co Ltd | Sound-proofing floor finishing material with heating function |
| JP5216315B2 (en) * | 2007-12-21 | 2013-06-19 | パナソニック株式会社 | Soundproof flooring |
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