JP2014070329A - Overlaying floor material for reform - Google Patents
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- JP2014070329A JP2014070329A JP2012214505A JP2012214505A JP2014070329A JP 2014070329 A JP2014070329 A JP 2014070329A JP 2012214505 A JP2012214505 A JP 2012214505A JP 2012214505 A JP2012214505 A JP 2012214505A JP 2014070329 A JP2014070329 A JP 2014070329A
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Description
本発明は、上貼りリフォーム用床材に係り、特に既設床暖房の床面に上貼りしてリフォームするのに好適な床材に関する。 The present invention relates to a flooring material for top-attached renovation, and more particularly to a flooring material that is suitable for reforming by pasting on a floor surface of an existing floor heating.
一般住宅において、内装の床面をリフォームする場合、既存の床材等を除去した後に新たに床材等を貼り替える方法、および既存の床材の上に新たな床材等を上貼りする方法の2通りの方法が挙げられる。 In general housing, when renovating the interior floor, a method of pasting a new flooring after removing the existing flooring and a method of pasting a new flooring on the existing flooring There are two methods.
前者の方法では、既存の床材の撤去作業に多くの手間と時間がかかる上に、撤去作業に伴う廃材が大量に発生するという問題が生じるのに対して、後者の方法では、これらの問題が解消できる利点がある。 In the former method, it takes a lot of time and labor to remove the existing flooring material, and in addition, there is a problem that a large amount of waste material is generated in the removal method. There is an advantage that can be solved.
既存の床材に新たな床材を上貼りする場合、ステープル等の釘類を用いて新たな床材を既存の床材に固定することが多い。しかしながら、既設床暖房の床面に新たな床材を上貼りする場合は、床下に埋め込んだ温水パイプ等が破損するおそれがあることから、釘類を用いることができない。そのため、新たな床材を既存の床材に対して、両面テープおよび接着剤で固定する必要がある。 When a new floor material is pasted on an existing floor material, the new floor material is often fixed to the existing floor material using nails such as staples. However, when a new floor material is pasted on the floor surface of the existing floor heating, nails cannot be used because there is a possibility that the hot water pipe buried under the floor may be damaged. Therefore, it is necessary to fix a new flooring material to the existing flooring material with a double-sided tape and an adhesive.
特許文献1には、四方端面に本実加工を施した上貼り床材を既設床暖房の床面状に順次平列状に施工することにより既設床暖房をリフォームする方法が開示されている。 Patent Document 1 discloses a method of remodeling existing floor heating by sequentially applying upper bonded floor materials, which are actually processed on the four end faces, to the floor surface of the existing floor heating in a parallel manner.
特許文献1に開示された既設床暖房の上貼りリフォーム方法では、本実により嵌合することにより、目隙きや段差などを生じさせることがないとされているが、床材に反りが生じている場合、両面テープでは接着強度が弱いために既設の床面に保持できない。 In the existing floor heating top remodeling method disclosed in Patent Document 1, it is said that the actual fitting does not cause gaps or steps, but the flooring is warped. The double-sided tape cannot be held on the existing floor because the adhesive strength is weak.
そこで、本発明は、床材が巾方向に反っていても両面テープによる保持が容易であり、効率良く施工することが可能な上貼りリフォーム用床材を提供することを目的とする。 Therefore, an object of the present invention is to provide a flooring material for top-coated renovation that can be easily held by a double-sided tape even when the flooring is warped in the width direction and can be efficiently constructed.
本発明は、上記の課題を解決するためになされたものであり、下記の上貼りリフォーム用床材を要旨とする。 This invention is made | formed in order to solve said subject, and makes a summary the following flooring material for upper-forming reform.
(1)既設床暖房に用いられる上貼りリフォーム用床材であって、少なくとも化粧材と木質基材とで構成され、巾方向の曲げヤング係数が0.3〜1.5GPaであることを特徴とする上貼りリフォーム用床材。 (1) It is a flooring material for upper renovation used for existing floor heating, which is composed of at least a decorative material and a wooden base material, and has a bending Young's modulus in the width direction of 0.3 to 1.5 GPa. The flooring material for remodeling.
(2)厚さが3〜9mmであることを特徴とする上記(1)に記載の上貼りリフォーム用床材。 (2) The flooring material for top-coated renovation as described in (1) above, wherein the thickness is 3 to 9 mm.
(3)裏面に前記床材の長手方向と平行な裏溝が形成されていることを特徴とする上記(1)または(2)に記載の上貼りリフォーム用床材。 (3) The flooring material for top-coated renovation as described in (1) or (2) above, wherein a back groove parallel to the longitudinal direction of the flooring material is formed on the back surface.
(4)表面に前記床材の長手方向と平行な縦溝を有し、前記裏溝が該縦溝の一部または全部に沿うように形成されていることを特徴とする上記(3)に記載の上貼りリフォーム用床材。 (4) In the above (3), the surface has a longitudinal groove parallel to the longitudinal direction of the flooring, and the back groove is formed along a part or all of the longitudinal groove. Flooring material for remodeling above.
本発明によれば、床材の巾方向における剛性を調整することで、床材に巾反りが生じていても両面テープおよび接着剤のみでの接着が確実に行えるようになる。したがって本発明に係る床材は、特に、釘類を用いることができない既設床暖房の上貼りリフォーム用に好適である。 According to the present invention, by adjusting the rigidity in the width direction of the flooring material, even when the flooring is warped, it is possible to reliably perform the bonding with only the double-sided tape and the adhesive. Therefore, the flooring according to the present invention is particularly suitable for top-attached renovation of existing floor heating that cannot use nails.
本発明に係る上貼りリフォーム用床材は、巾方向すなわち短手方向における剛性を低下させ、曲げヤング係数を0.3〜1.5GPaの範囲に調整したものである。床材の曲げヤング係数の算出方法について、以下に詳細を示す。 The flooring material for upper remodeling according to the present invention is one in which the rigidity in the width direction, that is, the short side direction is lowered, and the bending Young's modulus is adjusted in the range of 0.3 to 1.5 GPa. Details of the method for calculating the bending Young's modulus of the flooring will be described below.
図1は、床材の曲げヤング係数を求めるための曲げ強さ試験を説明する図である。なお、試験方法は、JIS A 5908(2003)に準拠している。図1に示す試験装置において、試験体の表面を上面とし、スパン中央に直交して置いた荷重棒の上に荷重を加え、そのときのたわみ量を測定する。 FIG. 1 is a diagram illustrating a bending strength test for determining a bending Young's modulus of a flooring material. The test method conforms to JIS A 5908 (2003). In the test apparatus shown in FIG. 1, a load is applied on a load bar placed perpendicular to the center of the span with the surface of the test body as the upper surface, and the amount of deflection at that time is measured.
図2は、通常の合板における、荷重とたわみ量との関係の一例を示す図である。用いた合板は、巾が40.0mm、厚さが5.4mmである。なお、スパンは280mmとした。図2から、曲げ強さ試験において、荷重とたわみ量との間には、原点からA点までの間で曲線的に、A点からB点までの間で直線的に、そしてB点から破断点であるC点までの間で再度曲線的に変化する傾向が認められる。床材の曲げヤング係数は、A点およびB点の間の任意の範囲における傾きから算出する。なお、以下の説明において、図中のA−B間を比例域とよぶ。以下に、具体的な算出例を説明する。 FIG. 2 is a diagram illustrating an example of a relationship between a load and a deflection amount in a normal plywood. The used plywood has a width of 40.0 mm and a thickness of 5.4 mm. The span was 280 mm. From FIG. 2, in the bending strength test, between the load and the deflection amount, a curve between the origin and the A point, a curve between the A point and the B point, and a break from the B point A tendency to change in a curved line again is observed up to point C, which is a point. The bending Young's modulus of the flooring is calculated from the slope in an arbitrary range between points A and B. In the following description, the area AB in the figure is referred to as a proportional range. A specific calculation example will be described below.
曲げヤング係数E(GPa)は、下記の(i)式によって算出することができる。
ただし、上記式中の各記号の意味は以下の通りである。
ΔP:比例域における任意の範囲での荷重の変化量(N)
L:スパン(mm)
b:試験体の巾(mm)
h:試験体の厚さ(mm)
Δy:比例域における任意の範囲でのたわみ量の変化量(mm)
The bending Young's modulus E (GPa) can be calculated by the following equation (i).
However, the meaning of each symbol in the above formula is as follows.
ΔP: Amount of load change in an arbitrary range in the proportional range (N)
L: Span (mm)
b: Width of test specimen (mm)
h: thickness of test specimen (mm)
Δy: Amount of change in deflection in an arbitrary range in the proportional range (mm)
ここで、比例域における任意の範囲での荷重およびたわみ量の変化量の比は、その範囲でのグラフの傾きから算出するのが良い。図2の例においては、概ね、荷重が5Nから150N程度の範囲において、比例関係が認められる。そこで、5Nから150Nまでの範囲において近似直線を引き、その傾き、すなわちΔP/Δyを算出したところ、12.9(N/mm)となった。そして、この例におけるその他の試験条件である、L=280mm、b=40.0mm、h=5.4mm、を上記(i)式に代入したところ、E=11.2(GPa)という結果が得られた。 Here, the ratio of the load and the amount of change in the deflection amount in an arbitrary range in the proportional range is preferably calculated from the slope of the graph in that range. In the example of FIG. 2, a proportional relationship is generally recognized in the range where the load is about 5N to 150N. Accordingly, an approximate straight line was drawn in the range from 5N to 150N, and the slope thereof, that is, ΔP / Δy was calculated to be 12.9 (N / mm). Then, when other test conditions in this example, L = 280 mm, b = 40.0 mm, h = 5.4 mm, are substituted into the above equation (i), the result E = 11.2 (GPa) is obtained. Obtained.
なお、上述のように、比例域における荷重とたわみ量との間における線形近似直線の傾きは、任意の範囲において算出すれば良い。上記の計算例では、荷重が5〜150Nの範囲において算出したが、その他、例えば、5〜50N、5〜100N、50〜100N、または50〜150Nなどにおいて算出しても良い。これらの例の全てにおいて、近似直線の相関係数は0.995以上であった。また、それぞれの範囲において算出した曲げヤング係数Eのばらつきは、相対標準偏差(RSD:%)において3%以下となり、どの区間で傾きを算出しても計算値にほとんど差がないことが分かった。 As described above, the slope of the linear approximation line between the load and the deflection amount in the proportional range may be calculated in an arbitrary range. In the above calculation example, the load is calculated in the range of 5 to 150 N, but may be calculated in other cases, for example, 5 to 50 N, 5 to 100 N, 50 to 100 N, or 50 to 150 N. In all of these examples, the correlation coefficient of the approximate line was 0.995 or higher. Moreover, the variation of the bending Young's modulus E calculated in each range was 3% or less in the relative standard deviation (RSD:%), and it was found that there was almost no difference in the calculated value even if the slope was calculated in any section. .
上述のように、本発明に係る上貼りリフォーム用床材は、両面テープおよび接着剤のみで既設床暖房の床面に確実に接着させられるよう、剛性を低下させ、曲げヤング係数で0.3〜1.5GPaの範囲に調整する必要がある。なお、巾方向の曲げヤング係数は0.5GPa以上であるのが好ましく、1.2GPa以下であるのが好ましい。 As described above, the flooring material for top-coated renovation according to the present invention has a reduced rigidity and a bending Young's modulus of 0.3 so that the flooring material can be reliably bonded to the floor surface of the existing floor heating only with the double-sided tape and the adhesive. It is necessary to adjust to a range of ˜1.5 GPa. The bending Young's modulus in the width direction is preferably 0.5 GPa or more, and preferably 1.2 GPa or less.
本発明における床材は、少なくとも化粧材と木質基材とで構成される構造を有する。化粧材については特に制限はないが、突き板、挽き板、樹脂シート、樹脂含浸紙、印刷紙等が例示できる。上記の化粧材のなかでも、特に巾反りを生じやすい突き板を化粧材として用いた場合において、本発明の巾方向の剛性を低下させることによって両面テープおよび接着剤のみで既設床暖房の床面に確実に接着するという効果が発揮されやすい。また、木質基材についても特に制限はないが、合板、MDF、HDF等の木質繊維材、無垢材、パーティクルボード等の集成材、またはこれらの組み合わせを適宜使用できる。 The flooring in the present invention has a structure composed of at least a decorative material and a wooden base material. Although there is no restriction | limiting in particular about a decorative material, A veneer board, a grinding board, a resin sheet, resin impregnated paper, printing paper etc. can be illustrated. Among the above-mentioned decorative materials, in particular, when a veneer that is likely to cause warp is used as a decorative material, the floor surface of the existing floor heating only with the double-sided tape and the adhesive by reducing the rigidity in the width direction of the present invention It is easy to exert the effect of securely bonding. The wood substrate is not particularly limited, and a wood fiber material such as plywood, MDF and HDF, a solid material, a laminated material such as particle board, or a combination thereof can be used as appropriate.
また、本発明に係る床材は、既設床暖房の上貼りリフォーム用に用いられるものである。既設床暖房の構造については特に制限はないが、本上貼りリフォーム用床材は、床材および放熱部を備える床暖房に好適に用いることができる。既設床暖房の床材としては、突き板、挽き板、樹脂シート、樹脂含浸紙、印刷紙等の化粧材と、合板、木質繊維材、無垢材、集成材、またはこれらの組み合わせからなる基材とで構成される床材が例示できる。放熱部としては、温水パイプが配置された温水式のもの、電熱線または面状発熱体が配置された電気式のものが挙げられる。 Moreover, the flooring according to the present invention is used for top-attached renovation of existing floor heating. Although there is no restriction | limiting in particular about the structure of the existing floor heating, The floor material for this top sticking reform can be used suitably for floor heating provided with a floor material and a thermal radiation part. Existing floor heating floor materials include veneer, sawn board, resin sheet, resin impregnated paper, printing paper and other decorative materials, and plywood, wood fiber material, solid wood, laminated wood, or a combination of these. The floor material comprised by these can be illustrated. Examples of the heat radiating unit include a hot water type in which a hot water pipe is arranged and an electric type in which a heating wire or a planar heating element is arranged.
本発明の上貼りリフォーム用床材の厚さについては特に制限はないが、薄すぎると剛性が著しく低くなり、化粧材貼付時の反りが大きく生産が困難となる。一方、厚すぎると既設床暖房の床面に敷設する際、床暖房の効果を損なうおそれがある。したがって、床材の厚さは、3〜9mmの範囲とするのが好ましい。床材の厚さは、4mm以上であるのがより好ましく、7mm以下であるのがより好ましい。 Although there is no restriction | limiting in particular about the thickness of the flooring material for top-applied reform of this invention, when too thin, rigidity will become remarkably low, the curvature at the time of a cosmetics sticking will become large, and production will become difficult. On the other hand, if it is too thick, the effect of floor heating may be impaired when laying on the floor surface of the existing floor heating. Therefore, the thickness of the flooring is preferably in the range of 3 to 9 mm. The thickness of the flooring is more preferably 4 mm or more, and more preferably 7 mm or less.
また、床材の大きさについても特に制限はなく、例えば、巾が145、150、300、303mm、長さが909、1818mmのものを用いることができる。また、本発明に係る床材同士は本実によって接合するのが好ましい。 Also, the size of the flooring is not particularly limited, and for example, those having a width of 145, 150, 300, 303 mm and a length of 909, 1818 mm can be used. Moreover, it is preferable that the flooring materials according to the present invention are joined to each other according to actuality.
本発明において、床材の巾方向の剛性を低下させる方法について、特に制限は設けないが、裏面に床材の長手方向と平行な裏溝を形成することによって、巾方向の曲げヤング係数を所定の値に調整することができるようになる。 In the present invention, the method for reducing the rigidity in the width direction of the flooring is not particularly limited, but by forming a back groove parallel to the longitudinal direction of the flooring on the back surface, the bending Young's modulus in the width direction is predetermined. Can be adjusted to the value of.
裏溝の形状については特に制限はないが、例えば、長方形、台形、V字形、U字形、R字形または直線と曲線とを組み合わせた形状等の断面形状とすることができる。また、溝の幅についても、所定の曲げヤング係数が得られるように適宜調整すれば良く、例えば、1〜3mmの範囲とすることができる。 Although there is no restriction | limiting in particular about the shape of a back groove | channel, For example, it can be set as cross-sectional shapes, such as a rectangle, trapezoid, V shape, U shape, R shape, or the shape which combined the straight line and the curve. Further, the width of the groove may be appropriately adjusted so as to obtain a predetermined bending Young's modulus, and can be set in a range of, for example, 1 to 3 mm.
裏溝の深さについても床材の厚さおよび剛性との関係から適宜決定すれば良く、特に制限はないが、床材表面と溝底部との距離が2〜3mmの範囲になるように裏溝を形成するのが好ましい。また、木質基材として5層の合板を用いた場合、裏溝は合板の上から2層目まで形成させるのが望ましい。裏溝を合板の1層目まで形成させると、床材の強度が著しく低下し破損のおそれがある。一方、裏溝を合板の3層目またはそれより下層までしか形成させないと、床材の剛性を十分に低下させることができなくなる。 The depth of the back groove may be appropriately determined from the relationship between the thickness and rigidity of the flooring, and is not particularly limited. However, the backside groove should be in a range of 2 to 3 mm. It is preferable to form a groove. Moreover, when 5 layers of plywood is used as the woody substrate, it is desirable to form the back groove from the top of the plywood to the second layer. When the back groove is formed up to the first layer of the plywood, the strength of the flooring material is remarkably lowered and may be damaged. On the other hand, if the back groove is formed only up to the third layer or lower layer of the plywood, the rigidity of the flooring cannot be sufficiently reduced.
ここで、床材に裏溝を形成すると、表面に裏溝が映り意匠性を悪化させる場合がある。そのため、本発明における上貼りリフォーム用床材は、表面に床材の長手方向と平行な縦溝を有したものであって、上記の裏溝が縦溝に沿うように形成されているのが好ましい。図3に、本発明に係る上貼りリフォーム用床材の一例の断面図を示す。また、図4に、本発明に係る上貼りリフォーム用床材の一例の上面図を示す。 Here, when the back groove is formed on the flooring material, the back groove may be reflected on the surface and deteriorate the design. Therefore, the flooring material for top-coated renovation in the present invention has a longitudinal groove parallel to the longitudinal direction of the flooring material on the surface, and the back groove is formed so as to follow the longitudinal groove. preferable. FIG. 3 shows a cross-sectional view of an example of a flooring material for top-attached reform according to the present invention. In addition, FIG. 4 shows a top view of an example of the flooring material for top-attaching reform according to the present invention.
図3および4には、3枚はぎの床材の例を示しているが、2枚はぎ、4枚はぎ、またはそれ以上のはぎ数の床材であっても良い。また、図4に示すように、必要に応じて床材の短手方向に横溝を形成しても良い。 3 and 4 show an example of three strips of flooring, but two strips, four strips, or more strips may be used. Moreover, as shown in FIG. 4, you may form a lateral groove in the transversal direction of a flooring as needed.
縦溝および横溝の形状については特に制限はないが、例えば、R溝、V溝または曲線と直線とを組み合わせた形状等、床材に通常採用される溝形状とすることができる。 The shape of the vertical and horizontal grooves is not particularly limited, but may be a groove shape that is usually employed for flooring, such as an R groove, a V groove, or a combination of curves and straight lines.
上記の裏溝は、縦溝に沿うように形成するのが好ましいが、縦溝の全部に沿うように形成しても良いし、複数の縦溝を有する場合、その一部に沿うように形成しても良い。また、床材の表面に裏溝が映らないようにするためには、裏溝は、巾が縦溝の巾以下となるようにし、縦溝の存在する領域に一致するように裏面側に形成するのが好ましい。 The back groove is preferably formed along the vertical groove, but may be formed along the entire vertical groove, or may be formed along a part of the vertical groove when having a plurality of vertical grooves. You may do it. In addition, in order to prevent the back groove from appearing on the surface of the flooring, the back groove is formed on the back side so that the width is equal to or less than the width of the vertical groove and matches the area where the vertical groove exists. It is preferable to do this.
以下、実施例によって本発明をより具体的に説明するが、本発明はこれらの実施例に限定されるものではない。 EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to these Examples.
厚さ約0.3mmの化粧単板、約0.5mm硬質パワーシート、約5.5mmの合板、約0.3mmの裏単板および約0.05mmのバッカー紙を順次積層して接合し、厚さが6.5mm程度で、長さ1818mm、巾303mmの床材を16個作製した。No.1〜8の床材は、長手方向と平行な巾約1.5mm、深さ3.9mmの長方形の裏溝を加工した。一方、No.9〜16の床材には裏溝を加工しなかった。 Laminate veneer about 0.3mm thick, about 0.5mm hard power sheet, about 5.5mm plywood, about 0.3mm back veneer and about 0.05mm backer paper are sequentially laminated and joined, Sixteen flooring materials having a thickness of about 6.5 mm, a length of 1818 mm, and a width of 303 mm were produced. No. The floor material of 1-8 processed the rectangular back groove | channel of width about 1.5mm and depth 3.9mm parallel to a longitudinal direction. On the other hand, no. The back groove was not processed in the flooring materials 9-16.
それぞれの床材から、長さ方向が40mm程度になるように切断し、曲げ強さ試験用の試験体とした。そして、図1に示す曲げ強さ試験装置を用いて、荷重とたわみ量との関係を測定し、上記の(i)式に基づき、床材の巾方向における曲げヤング係数を求めた。なお、スパンLは280mmである。試験条件および曲げヤング係数の算出結果を表1に示す。 Each floor material was cut so that the length direction was about 40 mm to obtain a test body for a bending strength test. And the relationship between a load and a deflection amount was measured using the bending strength test apparatus shown in FIG. 1, and the bending Young's modulus in the width direction of a flooring was calculated | required based on said (i) Formula. The span L is 280 mm. Table 1 shows the test conditions and the calculation results of the bending Young's modulus.
表1において、試験体の巾bは、切断した後の床材の長さ方向に対応する。また、表中の比例域における傾きは、上述のように、直線が認められる範囲を比例域と認定した後、その範囲での近似直線から求めた傾きである。 In Table 1, the width b of the test body corresponds to the length direction of the floor material after cutting. In addition, the slope in the proportional range in the table is a slope obtained from an approximate line in the range after the range where the straight line is recognized is recognized as the proportional range as described above.
表1に示すように、No.1〜8は、曲げヤング係数Eが本発明で規定する範囲を満足する本発明に係る床材であり、No.9〜16は、曲げヤング係数Eが本発明の規定から外れる比較例の床材である。それぞれの床材を用いて、既設の床暖房の床面に上貼り施工を行った。 As shown in Table 1, no. Nos. 1 to 8 are flooring materials according to the present invention in which the bending Young's modulus E satisfies the range defined by the present invention. 9 to 16 are floor materials of comparative examples in which the bending Young's modulus E deviates from the definition of the present invention. Using each floor material, it was pasted on the floor surface of the existing floor heating.
図5は、施工の概要図を示した図である。図5に示すように床材には本実加工が施されている。施工に際し、既存の床面に接着剤および両面テープを塗布する。両面テープは、上貼りリフォーム用床材の長手方向と平行な方向に貼着しており、図5に示すように、雄実側に貼った。 FIG. 5 is a diagram showing a schematic diagram of construction. As shown in FIG. 5, the actual processing is performed on the flooring. At the time of construction, apply adhesive and double-sided tape to the existing floor surface. The double-sided tape was stuck in a direction parallel to the longitudinal direction of the flooring material for top-coated renovation, and was stuck on the male side as shown in FIG.
上述のような施工において、本発明例であるNo.1〜8の床材は両面テープにより容易に接着することが可能であり施工性が良好であったのに対して、比較例であるNo.9〜16の床材は、剛性が高いため、巾反りの影響で両面テープによって十分に保持することができず、施工性が劣る結果となった。 In the construction as described above, No. which is an example of the present invention. The flooring materials Nos. 1 to 8 can be easily bonded with a double-sided tape and have good workability. Since the floor materials 9 to 16 have high rigidity, they could not be sufficiently held by the double-sided tape due to the influence of the warp, resulting in poor workability.
本発明によれば、床材の巾方向における剛性を調整することで、床材に巾反りが生じていても両面テープおよび接着剤のみでの接着が確実に行えるようになる。したがって本発明に係る床材は、特に、釘類を用いることができない既設床暖房の上貼りリフォーム用に好適である。 According to the present invention, by adjusting the rigidity in the width direction of the flooring material, even when the flooring is warped, it is possible to reliably perform the bonding with only the double-sided tape and the adhesive. Therefore, the flooring according to the present invention is particularly suitable for top-attached renovation of existing floor heating that cannot use nails.
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