JP6497609B2 - Flooring - Google Patents

Description

  The present invention relates to a flooring in which a foam material is combined on the back side of a wooden base material having a pair of real parts at both ends in at least one direction.

  Conventionally, for the purpose of weight reduction and the like, a flooring material in which a foam material is disposed on the back side of a wooden base material has been proposed and implemented (for example, see Patent Document 1). Furthermore, as a flooring material of this type, in order to prevent the load resistance of the real part from being reduced due to the flexibility of the foam material, a flooring material provided with a reinforcing material that also serves as a nail driver is proposed below the real part. Has been.

Japanese Unexamined Patent Publication No. 64-6461

  However, even in such a flooring, the reinforcing material does not sufficiently act on the shape / dimension change or warpage due to moisture absorption or drying. In particular, it is known that the feeling of walking is worsened if a concave warp occurs in the floor material after construction.

  The present invention has been proposed in view of such circumstances, and the object thereof is to provide a flooring material that can prevent changes in shape and dimensions and warpage after construction, and can prevent a decrease in load resistance. There is.

In order to achieve the above object, a flooring material of the present invention is a flooring material having a wooden base material provided with a pair of real parts at both ends in at least one direction, the surface side of the wooden base material A single plate of the same material and the same thickness is disposed on each of the back side and a foam material is disposed on the back side of the single plate on the back side, below one of the real parts, It is configured to be disposed adjacent to the foam material so that the reinforcing material protrudes from the back side edge of the wooden base material, and the number of the single plates provided on the front and back sides is different between the front and back sides. It characterized that you have increase the thickness of the back side of the veneer layer.

  According to the flooring of the present invention, since it has the above-described configuration, it is possible to prevent changes in shape and dimensions and warping after construction, and to prevent a decrease in load resistance.

It is explanatory drawing of the flooring (Example) which concerns on one Embodiment of this invention. (A) is a longitudinal sectional view of the flooring, and (b) is an exploded longitudinal sectional view thereof. It is a longitudinal cross-sectional view of the flooring which concerns on a comparative example. It is an evaluation table | surface which shows the evaluation result of an Example and a comparative example.

  Embodiments according to the flooring of the present invention will be described below with reference to the accompanying drawings.

  A flooring 1 to be described below is a flooring having a wood base material 10 having a pair of real parts 11 and 11 at both ends in one direction. The flooring 1 has a configuration in which a single plate 13 is disposed on at least the back surface side of the wooden substrate 10 and a foam material 15 is disposed on the back surface side of the single plate 13. Moreover, the reinforcing material 16 is arrange | positioned adjacent to the foam material 15 so that it may protrude rather than the back side edge of the wooden base material 10 below one real part 11 of the real parts 11 and 11.

  And as for the thickness as the single board 13 in the front and back of the wooden base material 10, the back side is made larger than the surface side. Note that the single plate 13 may not be disposed on the front surface side, and in this case, the thickness of the single plate 13 on the front surface side is zero.

  Next, the flooring 1 shown in FIG. 1 will be described in detail.

  The floor material 1 is a plate material having a substantially rectangular shape (for example, 303 mm × 1818 mm) in plan view (plan view is omitted). FIGS. 1A and 1B and FIGS. 2A and 2B illustrating the comparative example are longitudinal sectional views showing cross sections cut along the width direction of the floor materials 1 and 2.

  As shown in FIG. 1 (a), the flooring 1 has a protruding male part 5 on one side end and a concave female part 6 on the other side end. doing. In addition, the same male real part 5 and the female real part 6 are formed also in the side edge part of the longitudinal direction of the flooring 1. As shown in FIG. These male and female real parts are actually connected to the floor material 1 provided adjacently on a floor base (not shown).

  This flooring 1 is formed by sticking and laminating various materials to the front and back sides of a wooden substrate 10. As a material of the wood substrate 10, various wood materials such as plywood, MDF, particle board, and the like can be used. Formed on the side end of the wood base material 10 is a pair of peanuts 11 and 11 having stepped shapes that can mesh with each other to form the male part 5 and the female part 6 of the flooring 1. .

  As described above, the peanuts 11 and 11 are formed on the wooden base material 10, and therefore, by providing the foam material 15 and the reinforcing material 16 on the back surface side, the shape can be fitted to the side end portions. A flooring 1 having a male real part 5 and a female real part 6 can be formed.

  Moreover, although the thin base material 10 is used for this flooring 1 in order to reduce weight, even if it is such a thin material, if it is unreasonable 11 and will not be damaged, It can be processed and can be formed in a state where the actual strength is ensured.

  As shown in FIG.1 (b), the moisture-proof paper 14 and the single board 13 are stuck on the surface side of the wooden base material 10 in an order from the bottom. Further, a moisture-proof paper 14, two single plates 13 and 13, and a foam material 15 are attached to the back side of the wooden base material 10 in order from the top.

  A member for forming a concave groove (female real part 6) is provided adjacent to the foam material 15 on the female real part 6 side of the flooring 1. This member is a reinforcing member 16 for forming a nail driving portion for nailing on the female real part 6 side.

  The reinforcing member 16 is disposed so as to protrude from the rear surface side end (end surface corresponding to the bottom of the groove) of the wooden substrate 10 in order to form the groove as the female real part 6. In addition, when the flooring material 1 is constructed on a floor base (not shown), the reinforcing material 16 moves down the male part 5 of the adjacent flooring 1 as shown in FIG. It can also be a supporting material.

  As the reinforcing material 16, the same kind of wood material as that of the wood base material 10 is used. Of course, as long as it can be used as a reinforcing material or a nailing material, it may be formed of other materials.

  The foam material 15 provided as the main material of the back surface layer of the flooring 1 is made of a foamed resin material such as urethane foam.

  Thus, since the main material of the back layer of the present flooring 1 is composed of the foam material 15, the flooring 1 can be reduced in weight. In particular, in the case where the wooden base material 10 is composed of MDF or particle board, the weight reduction effect by the foam material 15 is large because they are originally heavy materials. In addition, since less wood material is used, it is easy to cope with fluctuations in the price of wood materials.

  Moreover, since this flooring 1 has a structure having the reinforcing material 16 adjacent to the foam material 15, it is possible to prevent a decrease in strength and a feeling of walking due to the foam material 15 being disposed on the back surface layer. it can. Further, by providing the reinforcing member 16 so as to protrude only on one side end portion, as described above, it is possible to support the flooring 1 adjacently provided on the floor base from below, so that it is efficient. It is.

  Next, the single plate 13 will be described. The veneer 13 on the front side of the flooring 1 is attached as a hard surface decorative material such as a veneer and has a thickness of about 0.5 mm. Further, as the two single plates 13 and 13 on the back side, the same material and the same thickness as the surface decorative material are used.

  As described above, the flooring 1 has a single plate 13 arranged on the front side of the wooden base material 10 and two single plates 13 and 13 laminated on the back side. The total thickness of the back surface side is thicker than the front surface side.

  Thus, since the single plate layer on the back surface side of the flooring 1 is formed thick, the single plate layer on the back surface side tends to shrink, and the center of the wooden base material 10 tends to protrude upward. In other words, it tends to be convex. Therefore, it becomes difficult to generate a concave warp (a downward dent in the center) due to drying after construction. Since it is difficult for concave warping to occur after construction, the occurrence of subsidence during walking can be suppressed. Therefore, there is almost no sense of incongruity due to the sinking during walking. In addition, when the flooring 1 absorbs moisture, there is a possibility that a convex warp may occur, but since it is a convex warp, there is not much sinking during walking, and it is difficult to feel a sense of incongruity.

  A comparative test was performed on the flooring 1 in order to confirm the degree of warpage. The test was performed under the same conditions for the flooring material 1 (Example) shown in FIG. 1 and the flooring material 2 (Comparative Example) shown in FIG. FIG. 2 is a vertical cross-sectional view of the floor material 2 of the comparative example, and FIG. 3 is an evaluation table showing the evaluation results of both floor materials 1 and 2. The planar dimensions of the flooring materials 1 and 2 are 303 mm × 1818 mm in both the examples and the comparative examples.

  The flooring material 1 according to the embodiment has the structure shown in FIG. 1 and has a laminated structure including one single plate 13 on the front surface side and two single plates 13 and 13 on the back surface side. Yes. Each of the wooden substrate 10 and the reinforcing material 16 is made of a particle board having a thickness of 5.5 mm. The thickness of each single plate 13, 13, 13 is about 0.5 mm. Therefore, the total thickness of the single plates 13 and 13 on the back side is about 1.0 mm. The foam material 15 is made of urethane foam having a thickness of 5.5 mm.

  On the other hand, in the floor material 2 of the comparative example, the number of single plates 13 on the back side is one. That is, the thicknesses of the single plates 13 on the front and back sides are the same, and both are 0.5 mm. The wooden base material 10, the foam material 15, and the reinforcing material 16 are the same as those of the floor material 1.

  The comparative test was performed by comparing the flooring material 1 of the example and the flooring material 2 of the comparative example with respect to three types, one immediately after construction, one in a moisture absorption state after construction, and one dried after construction. In the thermo-hygrostat, the test was carried out by constructing flooring materials 1 and 2 on joists, joists and discarded paste (this test environment is not shown).

  The floor materials 1 and 2 in the hygroscopic state were produced by setting the temperature and humidity chamber to a temperature of 40 ° C. and a humidity of 90%, and leaving the floor materials 1 and 2 in them for 2 weeks. Further, the floor materials 1 and 2 in a dry state were produced by setting the temperature and humidity chamber to a temperature of 50 ° C. and a humidity of 20% and leaving the floor materials 1 and 2 in them for 2 weeks.

  Further, the width warpage was measured using a measurement jig (not shown). The numerical value of the width warpage in FIG. 3 is the amount of change (mm) up and down at the center of the width. The minus sign in the table indicates that it has been warped.

  As can be seen from the evaluation table of FIG. 3, the flooring material 1 of the example is more convex than the flooring material 2 of the comparative example immediately after the construction. Further, when moisture was absorbed after construction, convex warpage occurred in any of the flooring materials 1 and 2, and in this case, the flooring material 1 of the example was more convex than the flooring material 2 of the comparative example.

  Moreover, when it dries after construction, a shape and a dimensional change will occur so that it may be warped, but although the numerical value becomes small about the flooring material 1 of an Example, the convex curvature state (numerical value is 0.012) was maintained. On the other hand, about the flooring 2 of a comparative example, it becomes a concave curvature state (a numerical value is a negative value) after drying. As described in this evaluation table, after drying, the floor material 2 of the comparative example felt a feeling of sinking during walking, but the floor material 1 of the example did not feel the feeling of sinking. .

  As described above, according to the test of the present flooring 1, no concave warp occurred even after drying after construction, and the feeling of walking did not deteriorate. Thus, if this flooring 1 is used, the concave curvature after construction can be suppressed, and therefore the possibility that the feeling of walking will deteriorate is low.

  The flooring 1 according to the embodiment described above has a structure in which the number of the single plates 13 provided on the front and back sides is different to increase the thickness of the single plate layer on the back side in order to make the structure difficult to warp. The single plate 13 thicker than the single plate 13 on the front surface side may be laminated on the back surface side. Further, the two single plates 13 and 13 on the back side may be provided separately through, for example, moisture-proof paper.

  In addition, in the case of providing a flexible decorative sheet without using the veneer 13 as the surface decorative material, it is not necessary to provide the veneer 13 on the front side, so only one veneer 13 is provided on the back side. May be provided.

  Thus, as the configuration of the flooring 1 for making it difficult to warp, the thickness of the single plate 13 on the front and back of the wooden base material 10 may be any as long as the back side is larger than the front side.

  As described above, according to the present flooring 1, not only the load resistance can be prevented from being lowered by thinning the wooden base material 10, but also the shape / dimension change and warpage after construction can be prevented. Deterioration of walking feeling due to occurrence can be prevented.

1 Floor material 5 Male real part 6 Female real part 10 Wood base material 11 Matched real (real part)
13 Veneer 14 Moisture-proof paper 15 Foam material 16 Reinforcement material

Claims (3)

A flooring material having a wooden base material having a pair of real parts at both ends in at least one direction,
The wood substrate surface side and the back side of the same material in each of the single plate of the same thickness is provided, the back surface side of the foam on the back surface side of the single plate is provided, one of the real part The reinforcing material is arranged adjacent to the foam material so that the reinforcing material protrudes from the back side end of the wooden base material.
Flooring characterized that you have increase the thickness of the back side of the veneer layer the number of the veneer which is provided on the front and rear at different among the front and back. In claim 1,
The wooden base material is a floor material made of MDF or particle board. In claim 1 or 2,
The floor is a solid material, the real part of which is a match.

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