JP4728780B2 - Backing material for sound insulation flooring - Google Patents

Description

  The present invention relates to a backing material for a sound insulation floor material used by being bonded to the back surface of a wooden sound insulation floor material.

  Conventionally, as this type of backing material for sound insulation flooring, it has been recognized that non-woven fabric or urethane foam alone or laminated ones have a sound insulation effect, and these materials are pasted on the back surface of a wooden sound insulation flooring. It is generally used as a backing material for sound insulation floor materials used together.

  Sound insulation floor materials using backing materials such as non-woven fabric and urethane foam use soft materials to demonstrate the sound insulation effect, so the compression hardness is weak and every time you walk on the floor, The reality is that the floor sinks, seasickness occurs, and walking is not good.

  For example, Japanese Patent Application Laid-Open No. 06-66011 (Patent Document 1) describes a material in which a foam sheet and a non-woven fabric are attached to a wooden board, and Japanese Patent Application Laid-Open No. 08-326279 (Patent Document 2). A material in which a foamed polyethylene sheet and a foamed polyurethane sheet are laminated on a wooden base material, and the foamed polyethylene sheet is hardened to cover the softness of the foamed polyurethane sheet to improve walking feeling is described.

  Japanese Patent Laid-Open No. 05-133082 (Patent Document 3) discloses that a sound insulating buffer having a large number of concave and convex portions provided on the upper and lower surfaces is provided on the lower surface of the flooring body, and the lower surface of the sound insulating buffer is uneven. JP, 2003-166336, A (patent documents 4) describes the heat compression polyurethane foam sheet which provided unevenness, and the high air permeability laminated on the one side A cushion layer is composed of a polyurethane foam sheet, and a nonwoven fabric is pasted on both sides thereof.

  Japanese Patent Application Laid-Open No. 10-121596 (Patent Document 5) describes a vibration-damping and sound-insulating sheet in which a buffer layer is laminated on the uneven portion side of the sound insulating layer on which the uneven portion is formed. It is described that the sound insulation layer is composed of a high specific gravity filler and a binder component mainly composed of synthetic resin or rubber.

Japanese Patent Laid-Open No. 06-066011 Japanese Patent Laid-Open No. 08-326279 Japanese Patent Laid-Open No. 05-133082 JP 2003-166336 A JP-A-10-121596

However, the non-woven fabric and urethane foam backing material for sound insulation flooring used in the above-mentioned conventional example is bonded to the back surface of the base material for flooring alone or laminated to improve the sound insulation performance. Therefore, the soft material containing a lot of air layer is used, so the 50% compression hardness in JIS K-6767 is very weak as 5.7 KPa. When constructed, if the weight during walking is 60 kg and the foot area is 200 cm ² , the load applied to the floor will be 29.4 KPa, sinking each time the floor walks, seasickness occurs, and the walking feeling is poor, There was a problem that the part where heavy objects such as furniture were placed sinks.

  The present invention solves the above-mentioned problems, and its purpose is to provide a backing material for a sound insulation floor material that does not cause sea sickness when constructed on a floor such as flooring and has a good walking feeling. is there.

The first configuration of the sound insulation flooring backing material according to the present invention for achieving the above object, an upper structure having a convex portion on a piece planar and a lower structure having a convex portion on a piece surface And the upper and lower structures are arranged vertically so as to alternately face each other so that the convex portions do not contact each other, and a nonwoven fabric or sponge is sandwiched between the upper and lower structures on the convex portion side of the upper and lower structures. When the load is applied to the floor base material on the upper structure, the upper and lower surfaces of the nonwoven fabric or sponge are deformed in a state of being pressed by the respective convex portions of the upper and lower structures. In this state, a space is formed between each of the planar pieces of the upper and lower structures and a lower surface and an upper surface of the nonwoven fabric or sponge .

Moreover, the 2nd structure of the backing material for sound-insulating floor materials which concerns on this invention is a said 1st structure WHEREIN: The said upper and lower structures are 50% of compression hardness 6.0KPa or more based on JISK -6767. in, and the height of the convex portion is 1mm or more, and at 30mm or less, and separation interval between the convex portions being provided adjacent the 1mm or more, and characterized in that it consists of the 250mm or less.

Further, a third configuration of the backing material for a sound insulating floor material according to the present invention is characterized in that, in the first and second configurations, a through hole is provided inside the convex portion .

According to a fourth configuration of the backing material for a sound insulating floor material according to the present invention, in the first and second configurations, the upper and lower structures are a planar piece and a plurality of standing pieces arranged on the planar piece. It is characterized by having a linear upright piece.

Moreover, the 5th structure of the backing material for sound-insulating floor materials which concerns on this invention is the said 1st-3rd structure. WHEREIN: The said up-and-down structure body is two or more standingly arranged on this planar piece. And a top piece connected to the annular upright piece.

Moreover, the 6th structure of the backing material for sound-insulating floor materials which concerns on this invention is the said 1st- 3rd structure. WHEREIN: The said up-and-down structure body is two or more standingly arranged on this planar piece. The through-hole which penetrates over the said planar piece was formed in the inside of this annular upright piece.

According to the first configuration of the backing material for a sound insulating floor material according to the present invention, walking is performed using the compression hardness of the structure by configuring the nonwoven fabric or sponge on the convex portion side of the upper and lower structures. Even if a load is applied each time, it is received by the structure with compression hardness, and only the soft nonwoven fabric and sponge containing the air layer used to obtain the sound insulation effect of the part in contact with the convex part of the structure are crushed The convex part of the structure is not crushed, so there is no seasickness phenomenon where the flooring sinks, the feeling of walking can be improved, and sinking does not occur even if a heavy object such as furniture is placed. In addition, a sound insulation effect can be obtained by a soft nonwoven fabric or sponge containing a large amount of air layer.

Moreover, according to the 2nd structure of the backing material for sound-insulating flooring materials based on this invention, even if a load is applied, a pair of structure 50% or more of compression hardness 6.0KPa or more based on JISK -6767 is obtained. The convex portions of a pair of structures are constructed by sandwiching a soft non-woven fabric or sponge containing a large amount of air layer used to obtain a sound insulation effect between the convex surfaces. There sinking from both sides in the non-woven fabric or sponge, sound insulation at the time of the floor material for backing the entire compression hardness becomes stronger walking without floor sinks, because there is no seasickness phenomenon walking feeling rather good, furniture, etc. The floor does not sink even if a heavy object is placed. In addition, an air layer is formed between a pair of structures and a non-woven fabric or sponge formed by laminating in a sandwich shape, so that the sound insulation effect can be improved. In addition, since the height of the convex portions is 1 mm or more and 30 mm or less, and the spacing between the convex portions is 1 mm or more and 250 mm or less, the uneven portions are continuously arranged, and the entire flooring is formed. Since the compression hardness is strong and a sufficient air layer is formed between the structure and the nonwoven fabric or sponge on the convex side, the sound insulation effect can be further improved.

Moreover, according to the 3rd structure of the backing material for sound-insulating floor materials which concerns on this invention, since a through-hole has penetrated the inside of the convex part of a structure, more air layers can be made and the sound-insulating effect is raised more. I can do it.

Moreover, according to the 4th structure of the backing material for sound-insulating floor materials which concerns on this invention, if the convex part of a structure can be easily formed with a linear upright piece, and a linear upright piece is combined alternately It can be set as the structure laminated | stacked by sandwiching a nonwoven fabric or sponge between a pair of each linear upright piece of a structure, and interposing between them.

Moreover, according to the 5th structure of the backing material for sound-insulating floor materials which concerns on this invention, the convex part of a structure can be easily formed with a cyclic | annular standing piece, and it is cyclic | annular with the top piece connected to the cyclic | annular standing piece. The rigidity of the standing piece can be increased.

Moreover, according to the 6th structure of the backing material for sound-insulating floor materials which concerns on this invention, the convex part of a structure can be easily formed with a cyclic | annular standing piece, and it covers a planar piece inside a cyclic | annular standing piece. The through hole can be penetrated, and the air hole can be increased by the through hole, and the sound insulation effect can be further enhanced.

An embodiment of a backing material for sound insulation flooring according to the present invention will be specifically described with reference to the drawings. First, FIG. 1, FIG. 4, the configuration of the first embodiment of the sound insulation flooring backing material according to the present invention will be described with reference to FIG. Figure 1 (a), (b) use is a perspective view and a sectional view showing a configuration of a structure of a first embodiment of the sound insulation flooring backing material according to the present invention, FIG. 2 (a) structure body sectional view showing a configuration of a sound insulation flooring backing material had, FIG. 2 (b) sectional view showing the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body, FIG. 3 ( a) the sound insulation provided is a perspective view, FIG. 3 (b) the sound insulation flooring backing material using the structure body shown the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body FIG. 4A is a cross-sectional explanatory view showing the behavior when a load is applied to the surface side of the flooring. FIG. 4A is a backing material for sound insulation flooring in which nonwoven fabrics or sponges are laminated in a sandwich shape by a pair of structures of the first embodiment. FIG. 4B is a cross-sectional explanatory view showing the structure of the sound insulating floor material provided with the backing material for the sound insulating floor material of FIG. 4A, and FIG. 5A is FIG. Perspective view showing the configuration of a sound insulation floor coverings of b), 5 (b) is a sectional view showing the action when a load is applied to the surface side of the sound insulation floor coverings of FIG. 5 (a).

In FIG. 1 to FIG. 5, reference numeral 1 denotes a structure having a convex portion, which has a planar piece 2 and a plurality of linear standing pieces 3 erected in parallel on the planar piece 2. It is configured. The structure 1 has 50% compression hardness of 6.0 KPa or more in accordance with JIS K-6767 , and the height of the line-raising piece 3 to be a convex portion is 1 mm or more and 30 mm or less, and is adjacent to the structure 1 The spacing interval between the line upright pieces 3 is 1 mm or more and 250 mm or less.

  As a material of the structure 1 of the present embodiment, plastic, hard rubber, paper, wood, bamboo, metal, inorganic material, and the like can be applied. For example, a commercially available parallel-rib plastic cardboard can be cut in half. 1 is an example of a linear wire upright piece 3, but another example of the wire upright piece 3 is a wavy wire upright piece 3. Further, a bent line-shaped standing piece 3 or the like can be appropriately applied. In the present embodiment, an example in which the upper end portion of the linear upright piece 3 of the structure 1 is pointed is shown, but the upper end portion of the linear upright piece 3 may be flat or provided with a curvature. It may be.

As shown in FIG. 2, the nonwoven fabric 4 or sponge is laminated on the convex side of the structure 1. FIG. 2A shows an example of a case where the nonwoven fabric 4 is laminated on the line-raised piece 3 side that is the convex portion of the structure 1 and the sponge 5 is laminated on the planar piece 2 side of the structure 1. In addition, you may laminate | stack sponge 5 instead of the nonwoven fabric 4 on the filament standing piece 3 side used as the convex part of the structure 1. FIG. As shown in FIG. 2 (b), a floor base material 6 such as a flooring material is laminated on the upper part of the nonwoven fabric 4.

  As the nonwoven fabric 4, a plate shape, a cotton shape, a sheet shape or the like having a thickness of 0.2 mm or more can be applied. In addition, as the sponge 5, a closed cell or open cell sponge such as plastic or rubber can be applied.

  As a method of laminating the structure 1, the nonwoven fabric 4, the sponge 5, and the floor base material 6, it is possible to join them by an adhesive, heat fusion, or the like.

  FIG. 2 (a) is a diagram of the structure 1 shown in FIG. An example of the backing material 7 for the sound insulation floor material in which the sponge 5 is laminated is shown. FIG. 2B shows an example of the case where the backing material 7 for a sound insulating floor material in FIG. 2A is bonded to the back surface side of the floor base material 6.

  In FIG. 2B, when a load is applied to the surface side of the floor base material 6, the nonwoven fabric 4 is compressed as shown in FIG. 3, the sound insulation flooring 8 having no walking sickness and good walking feeling is obtained. In addition, the space 12 of the non-woven fabric 4 portion that is not in contact with the line-raising piece 3 serving as a convex portion becomes an air layer, and the sound insulation effect can be further improved.

  As the structure 1, a commercially available parallel rib-shaped PP (polypropylene) plastic corrugated cardboard (trade name: Dumplet, manufactured by Ube Nitto Kasei Co., Ltd.) with a thickness of 4 mm and a rib spacing of 4 mm is cut in half by a slicing machine. A structure 1 made of PP (polypropylene) is obtained which is a planar piece 2 having a flat surface of 2.0 mm and a flat surface piece 3 which is a convex part having a compressive hardness of 50% and 169 KPa.

  A non-woven fabric 4 made of PP (polypropylene) having a thickness of 2 mm is adhered to the side of the erected piece 3 that is a convex portion of the structure 1 by using an adhesive, and foaming is performed on the side of the planar piece 2 with a thickness of 2 mm. A sound insulation floor constructed by laminating a polyethylene sponge 5 having a magnification of 10 times using an adhesive and laminating a PP (polypropylene) structure 1, a PP (polypropylene) nonwoven fabric 4, and a polyethylene sponge 5. The material backing material 7 is obtained.

The sound insulation flooring backing material 7 was sound insulating floor member 8 bonded to the floor base 6. The compression hardness of the sound insulation flooring 8 was measured at a compression hardness of 50% according to JIS K-6767. As shown in Table 1 below, it was 169.4 KPa, and the floor sinks even when walking. When the improvement value (dB) of light floor impact sound was measured according to the measurement method of JIS A-1418, the results shown in Table 2 below were obtained. It was.

  According to the backing material 7 for a sound insulating floor material having such a configuration, there is an excellent sound insulating effect, the floor does not sink even when walking, there is no seasickness phenomenon, and the sound insulating floor material backing material 7 has a good walking feeling. I was able to get it.

4 and FIG. 5 are configured by laminating linearly standing upright pieces 3 to be the convex portions of the pair of structures 1 shown in FIG. 1 and sandwiching the nonwoven fabric 4 therebetween to form a sandwich. It is. It should be noted that a sponge 5 may be interposed instead of the non-woven fabric 4 and laminated in a sandwich shape. FIG. 4 (a) is for a sound insulating floor material having a structure in which nonwoven fabrics 4 are laminated in a sandwich shape from above and below with the linear upright pieces 3 as the convex portions of the structure 1 of FIG. 1 having the linear upright pieces 3 as convex portions. FIG. 4B shows a backing material 7, which is a sound insulating floor material 8 in which the backing material 7 for a sound insulating floor material shown in FIG. Other configurations are similarly constructed as described above.

  As shown in FIG. 5B, when a load is applied to the upper surface of the floor base material 6, the nonwoven fabric 4 receives the load in a distributed manner by the linear upright pieces 3 of the upper and lower structures 1. A sound insulation flooring 8 is obtained. In addition, the space 12 that is not in contact with the nonwoven fabric 4 and the linear upright piece 3 of the structure 1 becomes an air layer, which further improves the sound insulation effect.

  Using two sheets of PP (polypropylene) structure 1 having a linear upright piece 3 which is a convex part having a flat surface piece 2 of 50% compression hardness of 169 KPa as in Example 1 above, A backing material 7 for a sound insulation floor was obtained by laminating a nonwoven fabric 4 made of PP (polypropylene) having a thickness of 2 mm between the upper and lower linear erected pieces 3 in a sandwich shape using an adhesive.

The sound insulation flooring backing material 7 and sound insulating floor member 8 bonded to the floor base 6 serving as a flooring substrate 6, were on SL measurements similar to the results shown in Table 1 and Table 2 are obtained It was. Also in this embodiment, it was possible to obtain a better backing material 7 for sound-insulating floor material having no seasickness phenomenon, good walking feeling, more resistant to load, and having a sound-insulating effect.

Next, the structure of 2nd Embodiment of the backing material for sound-insulating flooring materials based on this invention is demonstrated using FIGS. 6-8. FIG 6 (a), (b) use is a perspective view and a sectional view showing a configuration of a structure of a second embodiment of the sound insulation flooring backing material according to the present invention, FIG. 7 (a) structure body sectional view showing a configuration of a sound insulation flooring backing material had, FIG. 7 (b) is a cross-sectional explanatory view showing the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body, FIG. 8 ( a) is a perspective view showing the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body, FIG. 8 (b) load acts on the surface side of the sound insulation floor coverings shown in FIG. 8 (a) It is sectional explanatory drawing which shows the behavior at the time of doing. In addition, what was comprised similarly to the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description.

In this embodiment, as shown in FIGS. 6 to 8, the structure 1 includes a planar piece 2, a plurality of annular upstanding pieces 9 erected on the planar piece 2, and the annular upstanding pieces 9. The top piece 10 is connected. The structure 1 of the present embodiment also has a compression hardness of 50% or higher of 6.0 KPa or more according to JIS K-6767 , and the height of the annular upright piece 9 having the top piece 10 as a convex portion is 1 mm or more, and It is 30 mm or less, and the space | interval space | interval of the adjacent annular standing pieces 9 is 1 mm or more and 250 mm or less.

  The annular upright piece 9 of the present embodiment is an example configured with a circular cross section, but as other cross sectional shapes, a cross sectional polygonal shape such as a triangular cross section, a cross sectional quadrilateral shape, etc., a cross sectional star shape, a cross sectional half moon shape, Various shapes such as a crescent cross-sectional shape and a cross-sectional ridge shape (character shape of cross-section 8) can be applied.

The structure 1 of this embodiment is a plastic corrugated cardboard having an annular upright piece 9 provided with a top piece 10 that is a concavo-convex portion with 50% compression hardness of 6.0 KPa or more in accordance with JIS K-6767. I can do it.

  FIG. 7 (a) shows that the nonwoven fabric 4 is adhered and laminated on the top piece 10 side which is the convex portion of the structure 1 having the annular upright piece 9 provided with the top piece 10 which is the uneven portion, and is formed on the planar piece 2 side. A backing material 7 for a sound insulation floor material laminated with a sponge 5 bonded, and FIGS. 7 (b) and 8 (a) show a floor base on the nonwoven fabric 4 side of the backing material 7 for the sound insulation floor material in FIG. 7 (a). This is a sound insulation floor material 8 in which a material 6 is bonded and laminated.

  As shown in FIG. 8 (b), when a load is applied to the surface side of the floor base material 6, the nonwoven fabric 4 is received by the top piece 10 which is a convex portion of the structure 1, so that a sound insulating floor material 8 that can withstand the load is obtained. It is done. Moreover, the recessed part which is not in contact with the nonwoven fabric 4 of the structure 1 becomes an air layer in the space 12, and the sound insulation effect is improved.

  The top piece of the annular upright piece 9 which is a convex part of PP (polypropylene) plastic corrugated cardboard (product name: Puraparu Kawakami Sangyo Co., Ltd.) with a 50% compression hardness of 204 KPa and a 3 mm thick uneven part. A non-woven fabric 4 made of PP (polypropylene) having a thickness of 2 mm is adhered to 10 and laminated using an adhesive, and a polyethylene sponge 5 having a thickness of 2 mm and a foaming ratio of 10 times is adhered to the planar piece 2 side. A backing material for sound insulation flooring, which is formed by laminating and laminating a structure 1 made of PP (polypropylene) having uneven portions, a nonwoven fabric 4 made of PP (polypropylene), and a sponge 5 made of polyethylene in order. 7 was obtained.

  The sound insulation flooring backing material 7 was bonded to the floor base material 6 to obtain a sound insulation flooring 8, and the same measurement as in Example 1 was performed. As a result, the compression hardness of 50% of the sound insulation flooring 8 was as shown in the above table. As shown in Fig. 1, even if it walks with a load of 204.8 KPa, it does not sink, there is no seasickness phenomenon, and the feeling of walking is good. In addition, when the improvement value (dB) of the lightweight floor impact sound was measured in accordance with the measurement method of JIS A-1418, the results shown in Table 2 above were obtained, so there was a sound insulation effect and there was no seasickness phenomenon. The backing material 7 for sound insulation flooring with a good feeling was able to be obtained.

As described above, since the structure 1 having a compression hardness of 6.0 KPa or more of 50% is used in accordance with JIS K-6767 having the annular upright piece 9 serving as a convex portion, even when a load is applied during walking. Only the soft nonwoven fabric 4 or sponge containing the air layer used for obtaining the sound insulation effect of the portion in contact with the annular upright piece 9 that becomes the convex portion is crushed, and the annular upright piece 9 that becomes the convex portion of the structure 1 is Since it is not crushed and the unevenness is continuously arranged at intervals of 1 mm to 250 mm, the sound insulation flooring 8 as a whole has a strong compressive hardness, and when it is constructed on a flooring floor, it does not sink when walking. Since there is no seasickness phenomenon, the feeling of walking is good, and the floor does not sink even if heavy objects such as furniture are placed. Furthermore, by constructing by laminating the nonwoven fabric 4 and the sponge 5 on one side or both sides of the structure 1 of the annular upright piece 9 to be a convex part, a space 12 is formed between the concave part and the convex part to become an air layer, It can be set as the superior backing material 7 for sound insulation floor materials which can raise the sound insulation effect more.

Next, the structure of 3rd Embodiment of the backing material for sound-insulating floor materials based on this invention is demonstrated using FIGS. 9-11. Figure 9 (a), (b) use is a perspective view and a sectional view showing a configuration of a structure of a third embodiment of the sound insulation flooring backing material according to the present invention, FIG. 10 (a) structure body sectional view showing a configuration of a sound insulation flooring backing material had, FIG. 10 (b) is a cross-sectional explanatory view showing the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body, FIG. 11 ( a) is a perspective view showing the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body, FIG. 11 (b) load acts on the surface side of the sound insulation flooring shown in FIG. 10 (b) It is sectional explanatory drawing which shows the behavior at the time of doing. In addition, what was comprised similarly to each said embodiment attaches | subjects the same code | symbol, and abbreviate | omits description.

As shown in FIGS. 9 to 11, the structure 1 of the present embodiment has a through hole 11 provided inside a convex portion , and the structure 1 is formed on a planar piece 2 and the planar piece 2. A plurality of standing upright annular pieces 9 are provided, and a through hole 11 is formed in the annular upstanding piece 9 so as to penetrate the planar piece 2. The structure 1 of the present embodiment also has a compression hardness of 6.0 KPa or more, the height of the annular upright pieces 9 serving as convex portions is 1 mm or more and 30 mm or less, and the adjacent annular upright pieces 9 are separated from each other. The interval is 1 mm or more and 250 mm or less.

  The structure 1 of the present embodiment is a structure 1 in which the inside of a convex part having a compression hardness of 6.0 KPa or more obtained by slicing and cutting a flat part of a plastic corrugated cardboard having an uneven part with a flat part on the convex part is penetrated. Can be applied.

  FIG. 10 (a) shows a sheet-like piece in which a nonwoven fabric 4 is bonded and laminated to an annular upright piece 9 which is a convex part of a structure 1 having an annular upright piece 9 having through holes 11 formed inside. 10 is a backing material 7 for a sound insulation floor material in which a sponge 5 is bonded and laminated on two sides, and FIGS. 10 (b) and 11 (a) show the floor insulation material 7 for a sound insulation floor material in FIG. 10 (a). The substrate 6 is bonded and bonded.

  As shown in FIG. 11 (b), when a load is applied to the surface side of the floor base material 6, the nonwoven fabric 4 is received by the annular upright piece 9 that becomes the convex portion of the structure 1, so that a sound insulating floor material 8 that can withstand the load is obtained. It is done. Moreover, since the through-hole 11 is provided over the planar piece 2 inside the annular upright piece 9 that becomes the convex portion of the structure 1, a large amount of space becomes an air layer, and the sound insulation effect is improved.

The backing material 7 for sound insulation flooring has no sinking phenomenon and has a good feeling of walking because there is no sinking of the floor. Due to the structure in which the structure 1 having the convex portion made of the annular upright piece 9 and the nonwoven fabric 4 and the sponge 5 are laminated, the compression hardness of the sound insulation flooring material 8 becomes strong, and the floor does not sink when walking, and the seasickness phenomenon Disappears and the feeling of walking is improved. In addition, by forming a space in the backing material 7 for the sound insulation floor material, an air layer is formed, and the sound insulation effect can be further improved.

  Slice and delete the flat plate part of PP (polypropylene) plastic corrugated cardboard (product name: Purapar Kawakami Sangyo Co., Ltd.) with a 5mm thick uneven part with a flat plate on the convex part. A structure 1 made of PP (polypropylene) having a compression hardness of 183.0 KPa with 50% compression hardness in which the annular upright piece 9 serving as a convex portion penetrates the planar piece 2 through the through hole 11 was obtained.

  A non-woven fabric 4 made of PP (polypropylene) having a thickness of 2 mm is adhered and laminated to the annular upright piece 9 which is a convex portion of the structure 1 made of PP (polypropylene) using an adhesive, and thick on the planar piece 2 side. A polyethylene sponge 5 with a foaming ratio of 10 times and a thickness of 2 mm is laminated by bonding with an adhesive, and the inside of the annular upright piece 9 which becomes a convex portion penetrates the planar piece 2 through the through hole 11 A backing material 7 for a sound-insulating flooring material was obtained by sequentially laminating a structure 1 made of (polypropylene), a nonwoven fabric 4 made of PP (polypropylene), and a sponge 5 made of polyethylene.

  The sound insulation flooring backing material 7 was bonded to the floor base material 6 and bonded to form a sound insulation flooring 8. As shown in Table 1 above, 50% compression hardness was 183.0 KPa even when walking at the floor. There was no sinking, no seasickness, and good walking feeling. In addition, the light floor impact sound improvement value (dB) measured in accordance with JIS A-1418 was as shown in Table 2 above, so the sound insulation effect was obtained. A backing material 7 for the material could be obtained.

Surface by the internal through hole 11 of the annular upright strip 9 which 50% of the compressive hardness in compliance with JIS K-6767 with Ritotsu portion by the above-described configuration has a convex shape of the structure 1 above 6.0KPa Since the structure 1 penetrating the piece 2 is used, only the non-woven fabric 4 and the sponge that are in contact with the annular upright piece 9 that becomes a convex portion even when a load is applied during walking are crushed and become the convex portion of the structure 1 The annular upright piece 9 through which the inside passes is not crushed. Furthermore, by forming the structure 1 by laminating the nonwoven fabric 4 and the sponge 5 on one side or both sides, the inside of the annular upright piece 9 serving as a convex portion penetrates the planar piece 2 so that an air layer can be increased. The sound-insulating flooring backing material 7 can further enhance the sound-insulating effect.

  Next, a comparative example will be described.

[Comparative Example 1]
The non-woven fabric 4 made of PP (polypropylene) having a thickness of 2 mm and the sponge 5 made of polyethylene having a foaming magnification of 10 times and having a thickness of 2 times used in Example 1 are bonded and laminated using an adhesive, and the structure described above is used. A backing material for a sound insulating floor material in which the body 1 was omitted was obtained.

  The sound insulation flooring backing material was adhered and bonded to the floor base material 6 to measure the compression hardness and light floor impact sound improvement value (dB) as in Example 1 to be 50. % Compression hardness as shown in Table 1 was as weak as 28 KPa, and as shown in Table 2, there was little sound insulation effect, and a material that could satisfy the performance of the backing material for sound insulation flooring was not obtained.

[Comparative Example 2]
A commercially available sound insulation floor material L- in which a nonwoven fabric 4 made of PP (polypropylene) with a thickness of 2 mm and a urethane foam with a thickness of 2 mm are laminated and bonded to the floor base material 6 as a backing material for the sound insulation floor material. For 45 products (made by Matsushita Electric Works Co., Ltd.), the same measurement as in Example 1 was performed. As shown in Table 1, the compression hardness of 50% of this sound insulation flooring was as weak as 5.7 KPa. When walking, the floor sinks and a seasickness phenomenon occurs, the feeling of walking is poor, the seasickness phenomenon does not occur, and the compression hardness performance of the sound insulating flooring backing material with a good feeling of walking cannot be obtained. However, when the improvement value (dB) of the lightweight floor impact sound of JIS A-1418 was measured, the results shown in Table 2 were obtained, and the sound insulation effect was obtained.

As described above, according to the configuration of the backing material for a sound insulation floor material according to the present invention, it can be used as a backing material for a sound insulation floor material which does not cause sea sickness and has a good walking feeling. Unlike the configuration in which these are used alone or laminated and used, the structure 1 having a convex portion and the nonwoven fabric 4 or the sponge 5 are laminated, so that there is compression hardness, and Sound insulation performance can also be satisfied.

  When the sound insulation flooring backing material 7 having such a structure is bonded to the floor base material 6 and constructed as a sound insulation flooring 8 on a flooring floor or the like, the floor does not sink and there is no seasickness phenomenon when walking. The feeling is good. Moreover, since an air layer can be interposed between the nonwoven fabric 4 or sponge and the structure 1, it has the effect of improving the sound insulation performance.

Therefore, the air layer formed by the compression hardness and the space 12 can be appropriately changed by changing the height, space, or shape of the convex portion of the structure 1.

  That is, if the compression hardness of the structure 1 is increased, the floor does not sink even if a heavy object such as furniture is placed, and the effect of sound insulation performance is increased by increasing the air layer formed by the space 12. Yes, and has a great effect of becoming an excellent backing material 7 for sound insulation flooring.

  As an application example of the present invention, the present invention can be applied to a backing material for a sound insulation floor material used by being bonded to the back surface of a wooden sound insulation floor material.

(A), (b) is the perspective view and cross-sectional explanatory drawing which show the structure of the structure of 1st Embodiment of the backing material for sound-insulating floor materials which concerns on this invention. (A) shows cross-sectional view showing a configuration of a sound insulation flooring backing material using the structure body, the (b) the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body FIG. (A) a perspective view showing the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body, (b) the sound insulation floor provided with sound insulation flooring backing material using the structure body It is sectional explanatory drawing which shows the behavior when a load acts on the surface side of a material. (A) is sectional explanatory drawing which shows the structure of the backing material for sound insulation floor materials which laminated | stacked the nonwoven fabric or sponge by the pair of the structure of 1st Embodiment in the sandwich form, (b) is the backing for sound insulation floor materials of (a). It is sectional explanatory drawing which shows the structure of the sound-insulating floor material which provided the material. (A) is a perspective view which shows the structure of the sound-insulating floor material of FIG.4 (b), (b) is sectional explanatory drawing which shows the behavior when a load acts on the surface side of the sound-insulating floor material of (a). (A), (b) is the perspective view and cross-sectional explanatory drawing which show the structure of the structure of 2nd Embodiment of the backing material for sound-insulating flooring materials based on this invention. (A) shows cross-sectional view showing a configuration of a sound insulation flooring backing material using the structure body, the (b) the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body FIG. (A) is a perspective view showing the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body, (b) is when the load is applied to the surface side of the sound insulation floor coverings of (a) It is sectional explanatory drawing which shows a behavior. (A), (b) is the perspective view and cross-sectional explanatory drawing which show the structure of the structure of 3rd Embodiment of the backing material for sound-insulating floor materials which concerns on this invention. (A) shows cross-sectional view showing a configuration of a sound insulation flooring backing material using the structure body, the (b) the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body FIG. (A) is a perspective view showing the sound insulation of the flooring structure in which a sound insulation flooring backing material using the structure body, the load on the surface side of the sound insulation floor coverings of (b) FIGS 10 (a) acts It is sectional explanatory drawing which shows the behavior in case.

DESCRIPTION OF SYMBOLS 1 ... Structure 2 ... Plane piece 3 ... Line standing piece 4 ... Nonwoven fabric 5 ... Sponge 6 ... Floor base material 7 ... Backing material for sound insulation floor materials 8 ... Sound insulation floor material 9 ... Ring stand up piece
10 ... top piece
11 ... through hole
12 ... space

Claims (6)

An upper structure having a convex portion on the planar piece ;
A lower structure having a convex portion on the planar piece ;
Have
The upper and lower structures are arranged vertically so as to alternately face each other so that the convex portions do not contact each other ,
A nonwoven fabric or sponge is interposed between the upper and lower structures in a sandwich manner on the convex side of the upper and lower structures ,
When a load is applied to the floor base material on the upper structure, the upper and lower surfaces of the nonwoven fabric or sponge are deformed in a state of being pressed by the respective convex portions of the upper and lower structures, and the upper and lower structures are in that state. A backing material for a sound-insulating floor material , wherein a space is formed between each of the planar pieces and a lower surface and an upper surface of the nonwoven fabric or sponge . The upper and lower structures have a 50% compression hardness of 6.0 KPa or more according to JIS K-6767, the height of the protrusions is 1 mm or more and 30 mm or less, and the adjacent protrusions. separation interval of each other 1mm or more, and sound insulation flooring backing material according to claim 1, characterized in that it is composed of 250mm or less. The backing material for a sound insulation floor material according to claim 1 or 2 , wherein a through hole is provided inside the convex portion . The sound insulation according to claim 1 or 2 , wherein the upper and lower structures are configured to include a planar piece and a plurality of erected pieces standing on the planar piece. Backing material for flooring. The upper and lower structures are configured to include a planar piece, a plurality of annular standing pieces standing on the planar piece, and a top piece connected to the annular standing piece. The backing material for a sound-insulating floor material according to any one of claims 1 to 3. The upper and lower structure body has a planar piece and a plurality of annular upstanding pieces standing on the planar piece, and a through-hole penetrating the planar piece is formed inside the annular upright piece. The backing material for a sound insulation floor material according to any one of claims 1 to 3 , wherein the backing material is a sound insulation floor material.

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