JP2014070329A - Overlaying floor material for reform - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overlaying floor material for reform, which is easily held by a double-faced tape even though a floor material is warped in a width direction, and can be efficiently constructed.SOLUTION: The overlaying floor material for reform is used for existing floor heating, is formed of at least a decorative material and a woody substrate, and has a bending Young's modulus of 0.3-1.5 GPa in a width direction. The overlaying floor material for reform has vertical grooves that are formed on a surface so as to be parallel in a longitudinal direction of the floor material, and preferably has rear grooves that are formed in a rear face so as to match with a part or the whole of the vertical grooves.

Description

  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.

  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.

  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.

  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.

  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.

JP2007-056561A

  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.

  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.

  This invention is made | formed in order to solve said subject, and makes a summary the following flooring material for upper-forming reform.

  (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) The flooring material for top-coated renovation as described in (1) above, wherein the thickness is 3 to 9 mm.

  (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) 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.

  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.

It is a figure explaining the bending strength test for calculating | requiring the bending Young's modulus of a flooring. It is a figure which shows an example of the relationship between a load and the deflection amount. It is sectional drawing of an example of the flooring for top-attaching remodeling which concerns on this invention. It is a top view of an example of the flooring material for top-applied reform according to the present invention. It is a schematic diagram of construction.

  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.

  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.

  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.

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)

  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.

  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. .

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to these Examples.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

Claims (4)

  A flooring material for upper renovation used for existing floor heating, characterized in that it 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. Floor material for renovation.   The flooring material for top-coated renovation according to claim 1, wherein the thickness is 3 to 9 mm.   The floor material for top-coated renovation according to claim 1 or 2, wherein a back groove parallel to the longitudinal direction of the floor material is formed on the back surface.   The upper bonding according to claim 3, wherein a vertical groove parallel to a longitudinal direction of the flooring is provided on a surface, and the back groove is formed along a part or all of the vertical groove. Renovation flooring.