JP2008163562A - Sound insulator for floor material and floor material for house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel sound insulator for a floor material and the floor material for a house capable of achieving high sound insulation performance without increasing thickness of the sound insulator and forming the sound insulator having many layers even if a floor material main body is solid. <P>SOLUTION: This sound insulator for the floor material is provided with a first sheet material 4 having an upper face stuck to a lower face 3b of the floor material main body 3, formed like a sheet by nonwoven fabric, and forming many first through holes 4a in the direction of thickness of the material and a second sheet material 5 having an upper face 5b stuck to a lower face 4c of the first sheet material 4, formed like a sheet by nonwoven fabric, forming many second through holes 5a in the direction of thickness of the material, and blocking the first through holes 4a by the upper face 5b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sound insulating material for a floor material and a floor material for a house that sound-insulates an impact sound transmitted to a floor material body of a house so as not to propagate to a lower floor.

  Residential floor materials are required to have a certain level of sound insulation performance so that the impact sound transmitted to the floor surface is not propagated to the lower floors. It is evaluated by the sound insulation performance tested according to (according to JIS A1418, 1440). As a technology to improve the sound insulation performance, the floor material body whose upper surface is the floor surface is made of plywood with high sound insulation performance, or a notch groove for forming an air layer is formed on the bottom surface of the floor material body of this plywood. What has been formed is being implemented. In addition, a sound insulation member made of a foamable synthetic resin or a sound insulation member made of a nonwoven fabric such as a felt material is applied between the floor material body and the laying surface.

  However, the plywood flooring main body according to the above-mentioned conventional technology has better sound insulation performance than the solid flooring main body, but for the environmental reasons that harmful substances such as formaldehyde are released from the adhesive, it is The demand for the main body of flooring is increasing. In addition, a sound insulation effect can be obtained by sticking a sound insulation member made of foamable synthetic resin or a sound insulation member made of nonwoven fabric such as felt material between the floor material body and the laying surface. In order to obtain the sound insulation performance, it is necessary to take measures such as thickening the sound insulation member or installing an intermediate sound insulation member between the floor material body and the sound insulation member. In particular, a solid floor material body has a problem that a sound insulation performance is inferior to that of a plywood floor material body, so that a multilayer sound insulation member is necessary.

  Therefore, the present invention has been proposed in order to solve the problems of the above-described conventional sound insulation materials for flooring and floor materials for houses, and the sound insulation material can be used even if the floor material body is solid. An object of the present invention is to provide a sound insulation material for flooring and a flooring material for a house that have high sound insulation performance without increasing the thickness or without forming multiple layers.

  In order to achieve the above-described object, the floor insulating material according to the first invention (the invention according to claim 1) is bonded to the lower surface of the floor main body and formed into a sheet by a nonwoven fabric. A first sheet member in which a number of first through holes are formed in the thickness direction, and an upper surface is affixed to the lower surface of the first sheet member, and is formed into a sheet shape with a nonwoven fabric. A plurality of second through holes are formed in the thickness direction, and a second sheet member is formed by closing the first through holes with the upper surface.

  In the first invention, since the first through holes respectively formed in the first sheet member are closed by the upper surface of the second sheet member, the respective first holes formed in the first sheet member. Each of the first through holes is formed with an air layer closed by the floor material body and the upper surface of the second sheet member, and each second through hole formed in the second sheet member is Air layers closed by the lower surface and the laying surface of the sheet member 1 are formed.

  Then, the sound wave propagated to the floor material body is propagated by the respective air layers formed by the first through holes of the first sheet member when propagated from the floor material body to the first sheet member. And the attenuated sound wave is further propagated from the first sheet member to the second sheet member by the second through hole of the second sheet member. Since the vibration is attenuated by each formed air layer, the sound wave propagated to the flooring main body becomes a small sound wave or is silenced. Therefore, the material of the flooring main body is not limited to plywood, and even if a solid flooring main body is used, a predetermined sound insulation performance can be obtained without increasing the thickness of the sound insulating material or without using multiple layers. .

Further, since the first and second sheet members are formed into a sheet shape from a nonwoven fabric, a large number of air layers are formed between the fibers in the irregularly woven sheet-shaped cross section. The Then, when the sound wave propagated to the floor material body is propagated from the floor material body to the first sheet member, the vibration of the sound wave is attenuated by each air layer formed by the first through hole. At the same time, the vibration of the sound wave is further attenuated by the air layers formed between the fibers of the first sheet member.

  Furthermore, when the sound wave attenuated by the first sheet member is propagated from the first sheet member to the second sheet member, the sound wave is generated by each air layer formed by the second through hole. The vibration of the sound wave is attenuated, and the vibration of the sound wave is further attenuated by the air layers formed between the fibers of the second sheet member. it can.

  In the present invention, the porosity between the fibers constituting the nonwoven fabric is preferably 30 to 70%. When the porosity is less than 30%, the sound wave attenuation performance is low. On the other hand, when it exceeds 80%, the elasticity of each sheet member is increased, which is not suitable as a sound insulation material for flooring. The nonwoven fabric may be made of either natural fiber or synthetic fiber as raw material, and may be either felt-like or rash-like nonwoven fabric. In addition, the attachment between the lower surface of the flooring main body and the upper surface of the first sheet member and the attachment between the lower surface of the first sheet member and the upper surface of the second sheet member are performed with a double-sided adhesive tape or an adhesive. However, when pasting with an adhesive, it is preferable to prevent the adhesive from entering the respective through holes of each sheet member and reducing the volume of the air layer.

  A second invention (invention according to claim 2) is the above-mentioned first invention, wherein the upper surface of the first sheet member and / or between the first sheet member and the second sheet member and In addition, a paper sheet is affixed to the lower surface of the second sheet member.

  In this 2nd invention, since each through-hole of each sheet | seat member is obstruct | occluded with a paper-made sheet | seat, each through-hole becomes a more sealed air layer, and it can improve sound-insulation performance. Therefore, it is preferable that the paper sheet is attached to the entire area of each sheet member. In addition, as long as this paper sheet is formed into a sheet shape, for example, printing paper such as art paper, coated paper or high-quality paper, wrapping paper such as kraft paper, decorative paper or wallpaper paper Industrial paper such as paper or household paper such as dust paper or towel paper may be used.

  Further, a third invention (invention according to claim 3) is the invention according to the first or second invention, wherein the upper surface is affixed to the lower surface of the second sheet member and is formed into a sheet shape with a non-woven fabric. A large number of third through holes are formed in the thickness direction, and a third sheet member is formed by closing the second through holes with the upper surface.

  In the third aspect of the invention, in addition to the first and second sheet members, the lower surface of the second sheet member is formed into a sheet shape with a nonwoven fabric, and a large number of third through holes are formed in the thickness direction. In addition, since the third sheet member formed by closing the second through hole with the upper surface is attached, the sound insulation performance is further improved.

  According to a fourth invention (invention according to claim 4), in the third invention, the opening areas of all the through holes formed in the first to third sheet members are the first to the third. 3 is less than 50% of the area of the upper surface of the sheet member.

  In the fourth aspect of the invention, the opening areas of all through holes formed in the first to third sheet members are less than 50% with respect to the area of the upper surface of the first to third sheet members. From the lower surface side of the first through hole of the first sheet member closed by the upper surface of the second sheet member, the second through hole of the second sheet member closed by the lower surface of the first sheet member The upper surface side of the second sheet member, the lower surface side of the second through hole of the second sheet member closed by the upper surface of the third sheet member, and the third sheet member closed by the lower surface of the second sheet member. The upper surface side of the three through holes is completely blocked, and the sound wave is effectively attenuated by the air layer formed by these blocking.

  A fifth invention (invention according to claim 5) is the first or second sheet member or the second sheet member and the third sheet member in the third or fourth invention. Is affixed via a double-sided adhesive tape.

  In this 5th invention, since each through-hole of each sheet | seat member is obstruct | occluded with a double-sided adhesive tape, each through-hole becomes a more sealed air layer, and sound insulation performance can be improved. Therefore, it is preferable that the double-sided adhesive tape is attached to the entire area of each sheet member.

  Further, a residential flooring according to a sixth invention (invention according to claim 6) is a flooring main body having an upper surface as a floor surface, and the floor according to any one of the first, second, third, fourth, or fifth aspect. And a sound insulation material for the material.

  In the sixth aspect of the invention, the first sheet member constituting the sound insulating material for flooring according to any one of claims 1, 2, 3, 4 or 5 is provided between the flooring main body and the laying surface. 1 through hole and the second through hole of the second sheet member, or the first through hole of the first sheet member, the second through hole of the second sheet member, and the third Since the third through hole of the sheet member is stuck in a closed state, an air layer in which each of these through holes is closed is formed and propagated to the flooring main body by these air layers. The sound wave is attenuated every time it is propagated to the lower sheet member, and the sound insulation performance is improved.

  And the sound wave propagated to the floor material main body becomes a small sound wave or is silenced as it propagates downward to the floor material for the house. Therefore, the material of the flooring main body is not limited to plywood, and a predetermined sound insulation performance can be obtained even if a solid flooring main body is used. Moreover, although the sound insulation performance of the flooring body itself is enhanced by forming a notch groove on the lower surface, it is not limited to the one in which the notch is formed.

  Further, according to a seventh invention (invention according to claim 7), in the sixth invention, the flooring main body is formed by fixing a plurality of flooring main bodies in the width direction, and the sound insulating material for flooring is The plurality of flooring main bodies have the same area as that of the lower surface.

  In the seventh invention, the floor material body has a plurality of floor material bodies fixed in the width direction, and the sound insulating material for floor material has the same area as the area of the lower surface of the plurality of floor material bodies. As a result, the working time can be shortened when laying residential flooring.

  In the sound insulating material for flooring according to the first invention (invention of claim 1), each first through hole formed in the first sheet member is formed between the flooring main body and the second sheet member. An air layer closed by the upper surface is formed, and each second through hole formed in the second sheet member is closed by the lower surface and the laying surface of the first sheet member. Therefore, since the sound insulation performance is high, it is not necessary to increase the thickness of each sheet member, and the laying height of the flooring can be reduced. Further, since the first and second sheet members are formed into a sheet shape from a nonwoven fabric, a large number of air layers are formed between the fibers in the irregularly woven sheet-shaped cross section. Therefore, the sound insulation performance is further improved.

  In the second invention (the invention according to claim 2), since each through hole of each sheet member is closed with a paper sheet, each through hole becomes a more sealed air layer, and sound insulation performance is improved. Can be improved. Therefore, it is preferable that the paper sheet is attached to the entire area of each sheet member.

  Moreover, in 3rd invention (invention of Claim 3), in addition to the said 1st and 2nd sheet member, on the lower surface of a 2nd sheet member, it shape | molds in the sheet form with the nonwoven fabric, and the thickness direction is carried out. Since the third through hole is formed and a third sheet member is formed by closing the second through hole by the upper surface, the sound insulation performance is further improved. There is no need to increase the thickness of the sheet member, it is possible to have a configuration in which three thin plate-like members are laminated, the laying height of the flooring material can be reduced, and there is no need to use another sound insulating member in combination.

  In the fourth invention (the invention according to claim 4), the opening areas of all through holes formed in the first to third sheet members are the areas of the upper surfaces of the first to third sheet members. Therefore, the sound insulation performance can be further improved by completely closing the through holes formed in each sheet member.

  In the fifth invention (the invention according to claim 5), since each through hole of each sheet member is closed with a double-sided adhesive tape, each through hole of each sheet member has an air layer with high hermeticity. Therefore, the sound insulation performance can be further improved.

  In the sixth invention (the invention described in claim 6), the first through hole of the first sheet member and the second penetration of the second sheet member are provided between the floor material body and the laying surface. In a state where the hole, or the first through hole of the first sheet member, the second through hole of the second sheet member, and the third through hole of the third sheet member are closed. Since each of these through holes is closed, an air layer is formed, and the sound wave propagated to the flooring body by these air layers is attenuated each time it is propagated to the lower sheet member. As a result, the sound insulation performance is improved, and the sound wave is reduced or silenced as it is propagated downward to the residential flooring.

  Therefore, the material of the flooring material body is not limited to plywood, and even if a solid flooring material body is used, a predetermined sound insulation performance can be obtained. As a result, no harmful substances such as formaldehyde released from the adhesives can be eliminated, and the environment can be improved.

  In the seventh invention (the invention according to claim 7), the floor material body is formed by fixing a plurality of floor material bodies in the width direction, and the sound insulating material for floor material is a lower surface of the plurality of floor material bodies. Therefore, the working time can be shortened in the construction work of the residential flooring, so that the working time can be shortened and the construction cost can be reduced.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, best modes according to a sound insulating material for flooring and a flooring for housing for carrying out the present invention will be described in detail with reference to the drawings. First, the flooring 2 for a house according to the first embodiment will be described. A residential flooring 2 according to an embodiment of the present invention includes a floor sound insulating material 1 and a flooring main body 3.

  As shown in FIG. 1, the floor insulating material 1 has an upper surface 4b attached to the lower surface 3b of the floor material body 3 and formed into a sheet shape with a nonwoven fabric. The first sheet member 4 formed with a large number of holes 4a and the upper surface 5b are affixed to the lower surface 4c of the first sheet member 4 and are formed into a sheet shape with a non-woven fabric. A plurality of through holes 5a are formed, and the second sheet member 5 is formed by closing the first through hole 4a with an upper surface 5b.

  As shown in FIG. 1, the first sheet member 4 is formed into a sheet shape from a non-woven fabric, and in the thickness direction, an elliptical first through hole having a long axis in the longitudinal direction of the sheet shape. A large number of openings 4 a are formed, and the total opening area of the first through holes 4 a is about 50% with respect to the area of the upper surface 4 b of the first sheet member 4. Similarly to the first sheet member 4, the second sheet member 5 is formed into a sheet shape from a non-woven fabric. In the thickness direction, the second sheet member 5 has an elliptical shape having a major axis in the longitudinal direction of the sheet shape. A large number of two through holes 5 a are formed, and the total opening area of the second through holes 5 a is about 50% with respect to the area of the upper surface 5 b of the second sheet member 5.

  In addition, the material of the first and second sheet members 4 and 5 is formed into a sheet shape having a thickness of about 2 mm by a felt-like nonwoven fabric made of synthetic fibers, and the nonwoven fabric fibers and fibers. The porosity formed therebetween is 50%. In addition, although the synthetic fiber which is a raw material uses the polyester fiber, natural fibers, such as another synthetic fiber or wool, may be used, and the manufacturing method of a nonwoven fabric may be either a felt shape, a Rash shape, etc.

  The floor sound insulating material 1 composed of the first and second sheet members 4 and 5 formed as described above is formed on the lower surface 3b of the floor material body 3 with the first sheet member 4 as shown in FIG. The upper surface 4b is affixed with a double-sided adhesive tape (not shown), and the upper surface 5b of the second sheet member 5 is affixed with a double-sided adhesive tape (not shown) to the lower surface 4c of the first sheet member 4.

  As shown in FIG. 3, the first through holes 4 a of the first sheet member 4 (the front side of the drawing paper surface) do not overlap with the second through holes 5 a of the second sheet member 5 by this pasting. In this way, the sheet is blocked by the sheet-like portion of the upper surface 5b (see FIG. 1 and FIG. 2) of the second sheet member 5 (see the back side of the drawing sheet) where the second through hole 5a is not provided. Therefore, each first through hole 4 a of the first sheet member 4 is formed with an air layer closed by the floor material body 3 and the upper surface of the second sheet member 5. Each of the second through holes 5a of the second sheet member 5 has air layers blocked by the lower surface 4c (see FIGS. 1 and 2) of the first sheet member 4 and a laying surface (not shown). It is formed.

  As another example of forming each air layer, for example, as shown in FIG. 4, each first through hole 4 a of the first sheet member 4 is formed in the second sheet member 5. Even if it is shifted in the illustrated vertical direction so as not to overlap with the through hole 5a, it is blocked by the sheet-like portion of the upper surface 5b of the second sheet member 5 where there is no second through hole 5a to form an air layer. Can do. Moreover, in this Embodiment, the sticking area of the said double-sided adhesive tape which sticks the flooring main body 3, the 1st sheet member 4, and the 2nd sheet member 5 is 1st and 2nd sheet members 4 and 5 Although it is affixed to the whole surface of each area, it can also be affixed even by partial adhesion.

  Moreover, although the double-sided adhesive tape was used as a sticking material for sticking the floor material body 3, the first sheet member 4 and the second sheet member 5, it can be stuck with an adhesive. However, when sticking with this adhesive, there is a risk of lowering the sound insulation performance, which will be described later, so the first through hole 4a of the first sheet member 4 and the second through hole 5a of the second sheet member 5. It is desirable to take care not to allow the adhesive to enter.

  Next, the flooring 2 for houses is comprised by the flooring main body 3, the 1st sheet | seat member 4, the 2nd sheet | seat member 5, and the sticking material which affixes these, and the solid wood block is used for the flooring main body 3. It has been. As shown in FIGS. 1 and 2A, a notch groove is provided on the lower surface 3b side of the floor material body 3 in order to improve the sound insulation performance and to prevent the floor material body 3 from being distorted (warped). A plurality of 3c are formed in the width direction. 1 and FIG. 2B, a first step 3d is formed on the left side protruding from the lower surface 3b side, and a second step portion 3e is formed on the right side, protruding from the upper surface 3a side. Is formed. And the flooring 2 for houses is comprised by sticking the 1st sheet member 4 and the 2nd sheet member 5 which were mentioned above to the flooring main body 3 formed in this way as shown in FIG. .

  In the floor sound insulating material 1 or the residential floor material 2 according to the first embodiment configured as described above, the following operational effects are obtained. First, the first through-hole 4a formed in the first sheet member 4 and the second through-hole 5a of the second sheet member 5 are the floor material body 3, the first sheet member 4, the first 2 are closed by the sheet member 5 and the laying surface, and the double-sided adhesive tape to form air layers. And when the sound wave propagated to the flooring main body 3 is propagated from the flooring main body 3 to the laying surface via the first and second sheet members 4 and 5, each of the first sheet members 4. The vibration that constitutes the sound wave is attenuated by the air layer.

  Since this attenuated sound wave is further attenuated by the respective air layers of the second sheet member 5, the sound wave propagated to the flooring main body 3 becomes a small sound wave and propagates to the laying surface, or It is muted. Therefore, the material of the flooring main body 3 is not limited to the plywood, and even if the solid flooring main body 3 is used, a predetermined sound insulation is achieved without increasing the thickness of the sheet members 4 and 5 or by using multiple layers. Performance can be obtained.

  Since each sheet member 4 and 5 is formed into a sheet shape by a nonwoven fabric, a large number of air layers are formed between the fibers in the irregularly woven sheet-like cross section. And when the sound wave propagated to the floor material body 3 is propagated from the floor material body 3 to the first sheet member 4, it is attenuated by each air layer of the first through hole 4a, and The vibration of the sound wave is further attenuated by the air layers formed between the fibers of the first sheet member 4. The attenuated sound wave is attenuated by each air layer of the second through hole 5a, and the sound wave is also generated by each air layer formed between the fibers of the second sheet member 5. Since the vibration is further attenuated, the sound insulation performance of the sound wave can be improved.

  Moreover, since each through-hole 4a, 5a of each sheet | seat member 4 and 5 is obstruct | occluded with a double-sided adhesive tape, each through-hole 4a, 5a becomes a sealed air layer, and it can improve a sound-insulation performance further. it can. Therefore, it is preferable that the double-sided adhesive tape is applied to the entire area of the sheet members 4 and 5. Moreover, since the opening area of all the through holes 4a and 5a formed in each sheet member 4 and 5 is less than 50% with respect to the area of the upper surfaces 4b and 5b of each sheet member 4 and 5, it is 2nd. The first sheet member 4 is closed by the upper surface 5b of the first sheet member 5, the lower surface 4c side of the first through hole 4a, and the second sheet member 5 is closed by the lower surface 4c of the first sheet member 4. The upper surface 5b side of the two through holes 5a is completely closed, and the sound wave is further attenuated by the air layer formed by the blocking.

  Next, a second embodiment will be described. In the second embodiment, as shown in FIG. 5, the three floor material bodies 11, 12, 13 are fixed in the width direction, and the first and second sound insulation materials for the floor material are formed. The sheet members 14 and 15 are affixed with the same area as the areas of the lower surfaces 11b, 12b, and 13b of the three floor material bodies 11, 12, and 13. Of course, the 1st through-hole 14a and the 2nd through-hole 15a which were formed in the 1st and 2nd sheet | seat members 14 and 15 are each shifted and stuck so that it may not mutually overlap. Each of the sheet members 14 and 15 has the same area as the areas of the lower surfaces 11b, 12b, and 13b of the three floor material bodies 11, 12, and 13. Therefore, according to the residential flooring according to the second embodiment, the working time can be shortened when laying the residential flooring.

  Next, as shown in FIG. 6, the floor material for a house according to the third embodiment is further provided with a third sheet below the first and second sheet members 14 and 15 in the first example. A member 16 is affixed, a number of third through holes 16a are formed in the thickness direction, and the second through hole 15a is closed by the upper surface 16b. And in the flooring for houses concerning this 3rd embodiment, in addition to the 1st and 2nd sheet members 14 and 15, 3 sheet members 16 are stuck, and the 2nd penetration hole 15a is formed by the upper surface 16b. It is configured to close. Therefore, according to the flooring for a house according to the third embodiment, the sound insulation performance can be further improved.

  Next, a residential flooring according to a fourth embodiment will be described. As shown in FIG. 7, the floor material for a house according to the fourth embodiment has three floor material bodies 21, 22, and 23 fixed in the width direction to constitute a sound insulation material for the floor material. The first and second sheet members 24 and 25 are affixed to have the same area as the areas of the lower surfaces 21b, 22b and 33b of the three floor material bodies 21, 22, and 23, and A lower adhesive sheet member 26 is affixed to the lower surface 25 c of the sheet member 25. In the floor material for houses according to the fourth embodiment, since the lower adhesive sheet member 26 is adhered, for example, when the laying surface is difficult to adhere with a double-sided adhesive tape such as concrete. Adhesiveness can be improved by applying an adhesive corresponding to concrete to the lower surface 26c of the lower adhesive sheet member 26.

  Next, a residential flooring according to a fifth embodiment will be described. As shown in FIG. 8, the floor material for a house according to the fifth embodiment includes a floor material body 33, first to third sheet members 34, 35, and 36, and kraft paper between them. The first to third paper sheets 37, 38, 39, and 40 are attached. The first paper sheet 37 is between the lower surface 33b of the floor material body 33 and the upper surface 34b of the first sheet member 34, and the second paper sheet 38 is the same as the lower surface 34c of the first sheet member 34. Between the upper surface 5b of the second sheet member 35 and the third paper sheet 39 between the lower surface 35c of the second sheet member 35 and the upper surface 36b of the third sheet member 36. 40 is affixed between the lower surface 36c of the third sheet member 36 and a laying surface (not shown).

  And since the through-holes (not shown) of the sheet members 34, 35, 36 are closed by the paper sheets 37, 38, 39, 40, the through-holes become a sealed air layer, and the sound insulation performance is improved. be able to. Therefore, it is preferable that the paper sheets 37, 38, 39, and 40 are attached to the entire area of the sheet members 34, 35, and 36. In addition, any of a double-sided adhesive tape or an adhesive (not shown) may be used for these attachments. The material of the paper sheets 37, 38, 39 is not limited to kraft paper, and may be plain paper or other paper.

  When laying the sound insulating material for flooring, the laying surface may be directly affixed to the concrete base, or may be affixed to the upper surface of the laying plate placed on the joists.

It is a perspective view of the back which shows the sound-insulation material for flooring which concerns on embodiment of this invention, and the flooring for houses. The form of laying the sound insulating material for flooring and the flooring for housing shown in FIG. 1 is shown, (a) is a front view, and (b) is a right side view of (a). It is a top view which shows the form of sticking of the sound insulating material for flooring shown in FIG. It is a top view which shows the other form of sticking of the sound insulating material for flooring shown in FIG. It is a perspective view which shows 2nd Embodiment. It is a perspective view which shows 3rd Embodiment. It is a perspective view which shows 4th Embodiment. It is a front view which shows 5th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sound insulation material for floor materials 2 Floor material for houses 3 Floor material main body 3a Upper surface 3b Lower surface 3c Notch groove 4, 5 1st and 2nd sheet | seat member 4a, 5a 1st and 2nd through-hole 4b, 5b Upper surface 4c Lower surface 11, 12, 13 Floor material body 11b, 12b, 13b Lower surface 14, 15, 16 First to third sheet members 14a, 15a, 16a First to third through holes 21, 22, 23 Floor material body 24 , 25 First and second sheet members 33 Floor material body 34, 35, 36 First to third sheet members 37, 38, 39, 40 First to third paper sheets

Claims (7)

The upper surface is affixed to the lower surface of the flooring main body and is formed into a sheet shape from a nonwoven fabric, and a first sheet member in which a number of first through holes are formed in the thickness direction;
The upper surface is affixed to the lower surface of the first sheet member and is formed into a sheet shape with a non-woven fabric. A plurality of second through holes are formed in the thickness direction, and the first through hole is formed by the upper surface. And a second sheet member formed by closing the floor.   A paper sheet is adhered to the upper surface of the first sheet member and / or between the first sheet member and the second sheet member and / or the lower surface of the second sheet member. The sound insulating material for flooring according to claim 1, wherein   The upper surface is affixed to the lower surface of the second sheet member and is formed into a sheet shape with a nonwoven fabric, and a plurality of third through holes are formed in the thickness direction, and the second through hole is formed by the upper surface. A sound insulation material for flooring according to any one of claims 1 and 2, further comprising a third sheet member that is closed.   The opening area of all through holes formed in the first to third sheet members is less than 50% with respect to the area of the upper surface of the first to third sheet members. 3. The sound insulating material for flooring according to 3.   5. The first sheet member and the second sheet member, or the second sheet member and the third sheet member are pasted through a double-sided adhesive tape. Sound insulation for any flooring.   A floor material for a house, comprising: a floor material body having an upper surface as a floor surface; and the sound insulating material for floor material according to any one of claims 1, 2, 3, 4 or 5. The floor material body is formed by fixing a plurality of floor material bodies in the width direction, and the sound insulating material for floor material has the same area as the area of the lower surface of the plurality of floor material bodies. The flooring for a house according to claim 6.