JP2004148574A - Method for manufacturing vibration-damping/sound-insulating sheet and vibration-damping/sound-insulating sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration-damping/sound-insulating sheet whose sound insulation performance can be obtained under a simple construction and at a low cost, and a method for easily manufacturing a vibration-damping/sound-insulating sheet. <P>SOLUTION: The vibration-damping/sound-insulating sheet 1 comprises a base material 2 which is molded by passing an asphalt mixture 8 containing an asphalt and a filler between a first roll 23a having an irregular surface 24 formed and a second roll 23b arranged opposite to each other and sheet-like surface materials 3a and 3b which are supplied between the surfaces of the rolls 23a and 23b and the asphalt mixture 8 and laminate joined to the surface of the base material 2. In this case, the surface material 3a to be supplied to the first roll 23a is preferably of a lower melting point than the surface material 3b to be supplied to the second roll 23b. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vibration-damping and sound-insulating sheet, and more particularly to a vibration-damping and sound-insulating sheet used for floors and walls of buildings such as houses to prevent transmission of vibration and noise, and a method of manufacturing the same.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, sheet-like materials are frequently used as a vibration damping material and a sound insulating sheet material for a building such as a house in view of workability, transportability, workability, and the like (having a vibration damping function and / or a sound insulating function). A sheet-shaped material, that is, a vibration damping sheet and a sound insulating sheet may be collectively referred to as a vibration damping sound insulating sheet hereinafter).
As a vibration damping sheet, for example, it is often laid and used as a floor base material for the purpose of absorbing floor vibration and sound insulation (prevention of generation and / or propagation) of solid-borne sound propagating through a building frame such as floor material. The sound insulation sheet is often embedded in a building wall for the purpose of insulating airborne sound. As these vibration-damping and sound-insulating sheets, those obtained by mixing and dispersing fillers such as iron sand, slag, and iron powder into a binder such as asphalt and processing them into a sheet shape are generally used.
[0003]
By the way, in recent years, demands on vibration damping and sound insulation performance for buildings have been increasing, and development of a high-performance vibration damping and sound insulating sheet that can respond to the demand has been urgently required.
In order to improve vibration damping and sound insulation performance, for example, one surface of a base material made of an asphalt-based mixture containing asphalt and a filler is embossed, and the surface opposite to the embossed surface is interposed with an adhesive or the like. Thus, a vibration damping and sound insulating sheet formed by laminating foams such as polyethylene and polyurethane is known (for example, see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent No. 2,735,812 [0005]
[Problems to be solved by the invention]
However, the vibration-damping and sound-insulating sheet in which the foams are laminated as described above has a problem that the production cost is increased because it is necessary to form the foam material into a sheet and laminate this with an adhesive or the like. For this reason, in order to provide a vibration-damping and sound-insulating sheet with high vibration-damping and sound-insulating performance at a low cost, irregularities are directly provided on the surface of a base material made of an asphalt-based mixture, and the vibration of the cavity that appears due to the irregularities is formed Attempts have been made to utilize the sound absorbing effect. However, it is extremely difficult to form an uneven shape directly on the surface of an asphalt-based mixture. In the conventional method, as described in Patent Document 1, embossing with a surface roughness of 1000 μm or less is required. At last.
[0006]
The present invention has been made in view of the above-mentioned problems, and a method and a method for manufacturing a vibration-damping and sound-insulating sheet capable of easily manufacturing a vibration-damping and sound-insulating sheet having excellent vibration damping and sound insulating performance at a low cost and a simple configuration. It is an object to provide a vibration-insulating sheet.
[0007]
[Means for Solving the Problems]
The method for producing a vibration-damping sound-insulating sheet according to the present invention is characterized in that, when the asphalt-based mixture containing asphalt and a filler is formed into a base material by being passed between first and second rolls disposed opposite to each other, A sheet-shaped surface material is supplied between the surface of the roll and the asphalt-based mixture, and the surface material is laminated and joined to both surfaces of the base material, and a vibration damping sound-insulating sheet including the base material and the surface material is provided. A method for manufacturing a vibration-damping and sound-insulating sheet, wherein the first roll is provided with irregularities on the surface, thereby forming irregularities on the surface of the base material. This is a method for manufacturing a sound insulating sheet.
[0008]
According to such a method of manufacturing a vibration-damping and sound-insulating sheet, when the asphalt-based mixture is formed into a sheet by the first and second rolls (twin rolls) arranged opposite to each other and formed into a base material, the surface of the roll is removed. Since the sheet-like surface material is supplied between the asphalt-based mixture and the asphalt-based mixture, adhesion between the roll and the asphalt-based mixture can be prevented, and sufficient workability can be secured. Further, since the irregularities formed on the surface of the first roll can be transferred to the base material, the vibration-damping and sound-insulating sheets having the irregularities on the surface can be continuously mass-produced, and the productivity is extremely high. high.
By providing the irregularities on the surface of the vibration damping and sound insulating sheet, excellent vibration damping performance and sound insulating performance can be obtained.
Further, since the sheet-like surface material is integrally attached to the base material by the adhesive force (tack) of the asphalt-based mixture, it can be laminated without applying an adhesive or the like. In addition, by providing a surface material on the surface of the vibration-damping and sound-insulating sheet, the adhesive force on the surface of the vibration-damping and sound-insulating sheet is suppressed, so that it does not stick to hands and feet during transportation and construction, and is excellent in handling. It will be.
[0009]
In the method for manufacturing the vibration damping and sound insulating sheet, the surface material supplied to the surface of the first roll may have a lower melting point than the surface material supplied to the surface of the second roll. preferable. Thereby, the surface material supplied to the surface of the first roll (hereinafter, also referred to as a first surface material) is changed to the surface material supplied to the surface of the second roll (hereinafter, also referred to as a second surface material). )), The second surface material having higher rigidity can support the tension applied to the substrate, so that a clear uneven shape can be easily formed on one surface of the substrate. In addition, it is possible to suppress the elongation of the base material and the deformation of the uneven shape during roll forming. Therefore, it is possible to easily manufacture a vibration damping and sound insulating sheet having irregularities on the surface.
[0010]
Further, the vibration damping and sound insulating sheet according to the present invention is such that an asphalt-based mixture containing asphalt and a filler is formed into a sheet to form a base material, and a sheet-like surface material is laminated and joined to both surfaces of the base material. And a concavo-convex shape formed on at least one surface of the base material.
Such a vibration-damping sound-insulating sheet has a simple configuration because the base material and the sheet-like surface material are laminated and joined by the adhesive force of the asphalt-based mixture without the use of an adhesive or the like, It can be easily manufactured.
Since the unevenness is provided on one surface of the vibration-damping and sound-insulating sheet, vibrations of floor material, air, and the like can be interrupted, and a high vibration-damping and sound-insulating effect can be obtained. Since the surface material is provided on the surface of the vibration-damping and sound-insulating sheet, the adhesive force on the surface of the vibration-damping and sound-insulating sheet is suppressed, and it does not stick to hands and feet during transportation or construction, and is excellent in handling. It will be.
[0011]
In this vibration damping sound insulating sheet, the irregularities are formed on one surface of the substrate, and the surface material on the side where the irregularities are formed has a lower melting point than the surface material on the other surface. Preferably,
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments.
FIG. 1A is a perspective view showing an example of the vibration damping and sound insulating sheet 1 according to the present invention, FIG. 1B is a schematic diagram illustrating a method for manufacturing the vibration damping and sound insulating sheet 1 according to the present invention, and FIG. FIG. 3 is a perspective view showing a state in which the vibration damping and sound insulating sheet 1 is formed into a long band shape and formed into a roll.
In FIG. 1A, the vibration-damping and sound-insulating sheet 1 is provided on both sides (both sides in the thickness direction) of a base material 2 formed into a sheet by an asphalt-based mixture in which a filler is mixed and dispersed in asphalt. The surface material 3 is integrated in a laminated state. This vibration damping and sound insulating sheet 1 can be applied to floors and walls of buildings such as houses, condominiums, office buildings and factories.
[0013]
Here, the substrate 2 is a mixture of 10 to 30% by mass of asphalt and 90 to 70% by mass of a filler, and the specific gravity of the substrate 2 is formed to be 2.5 to 4.0 g / cm ³ .
As asphalt, straight asphalt, blown asphalt, modified asphalt, and the like can be used. In particular, asphalt for waterproofing work (specific gravity of about 1.0 g / cm ³ ) specified in JIS K 2207 is durable and waterproof. It is suitable in terms of performance, reliability and the like.
[0014]
Various fillers such as metal powders such as iron powders, calcium carbonate powders, cement powders and rock powders can be used as the filler. In particular, those having a particle size distribution of which the particle size is 150 μm or less and 80% by mass or more are used. When used, kneadability with asphalt and workability of an asphalt-based mixture obtained by mixing with asphalt are improved, which is preferable.
[0015]
As the surface material 3, a material having flexibility and flexibility and not impairing the flexibility and flexibility of the whole vibration damping and sound insulating sheet 1 is employed. The surface material 3 functions to maintain the shape of the vibration-damping and sound-insulating sheet 1 and to remove tack on the surface, and paper or the like can be used as the material. The material serving as a buffer material on the surface of the base material 2 is made of polyolefin such as polypropylene or polyethylene, polyester such as polyethylene terephthalate, polyurethane, rayon, glass, or the like. Those having a sheet shape of 状 80 g / m ² are preferable. In particular, those made of a thermoplastic resin such as polypropylene, polyethylene, and polyester are preferable because of their excellent flexibility, workability, affinity with asphalt, and the like. The fixing of the surface material 3 to the base material 2 can utilize the adhesiveness of asphalt included in the base material 2.
The sheet thickness of the vibration damping and sound insulating sheet 1 is not particularly limited, but may be, for example, about 2 to 12 mm.
[0016]
An irregular shape 4 is formed on at least one surface of the vibration damping sound insulating sheet 1. The concavo-convex shape 4 is not particularly limited. Specifically, for example, as shown in FIG. 1A, the concavo-convex shape 4 includes a large number of convex portions 5. Alternatively, as shown in FIG. 3A, it may be composed of a large number of recesses 6, or as shown in FIG. 3B, it may be composed of a large number of grooves 7.
By providing the irregularities 4 on the vibration damping sound insulating sheet 1 as described above, the vibration damping performance and the cushioning property are improved. Further, after the vibration-damping and sound-insulating sheet 1 is constructed, a gap is formed between the vibration-absorbing and sound-insulating sheet 1 and the floor panel, wall material, or the like. Therefore, it can contribute to the maintenance of a more comfortable living environment.
When the vibration-damping and sound-insulating sheet 1 is applied to a floor, the surface of the uneven shape 4 can be directed upward or downward, but it is preferable that the surface be aligned with one of the surfaces.
When the vibration-damping and sound-insulating sheet 1 is applied to a wall, the direction of the surface of the uneven shape 4 can be set to the outdoor side or the indoor side, but it is preferable to perform the construction by aligning it with either one.
[0017]
The shape of the convex portion 5 or the concave portion 6 is illustrated as a quadrangular prism, but is not particularly limited. For example, a polygonal prism such as a triangular prism or a hexagonal prism, a polygonal pyramid such as a triangular pyramid or a quadrangular pyramid, a cylinder or an elliptical column, or a cone One type or a plurality of types can be selected from the above.
The cross-sectional shape of the groove 7 is not particularly limited, and may be, for example, one or more types selected from a triangle, a square, a rectangle, a trapezoid, a semicircle, an arc, and the like.
The shape of the convex portion 5 or the concave portion 6 or the cross-sectional shape of the groove 7 is determined by selecting a material having good performance such as vibration damping performance, cushioning property, and air permeability required for the vibration damping and sound insulating sheet 1. Is preferred.
[0018]
It is preferable that the depth of the uneven shape 4 be 1 mm or more from the viewpoint of vibration damping and sound insulation characteristics. It is preferable that the surface on which the irregularities 4 are not formed is as smooth as possible. However, an embossed shape may be provided so that the surface roughness is less than 1000 μm.
[0019]
Next, one embodiment of a method for manufacturing a vibration damping and sound insulating sheet of the present invention will be described.
First, a filler is added to asphalt being kneaded in a kneader 20 such as a roll type or Banbury type, and the asphalt mixture 8 in which the filler is mixed and dispersed in asphalt by being kneaded by the kneader 20 or the like. Is prepared. The kneading temperature is not particularly limited as long as the kneading can be carried out sufficiently. However, when the kneading temperature is about 150 to 200 ° C., the viscosity of asphalt is reduced, and efficient kneading can be realized.
[0020]
The asphalt mixture 8 thus obtained is supplied from the hopper 21 via the extruder 22 to the forming roll 23 composed of the first and second rolls 23a and 23b. The roll interval between the forming rolls 23 is set to the thickness of the base material 2 to be formed. On one of the forming rolls 23 (first roll 23 a), irregularities 24 transferred to the base material 2 are provided. If the irregularities 24 are formed integrally with the first roll 23a, the durability and the mass productivity will be excellent. For example, a sheet material having the irregularities 24 on the outer periphery of a smooth roll may be used. It may be provided as a separate body by winding.
[0021]
Simultaneously with the forming, the surface materials 3a and 3b are continuously supplied to the surface of the forming roll 23 from the surface material supply rolls 25a and 25b. In this way, the vibration damping and sound insulating sheet 1 in which the surface materials 3a and 3b are laminated on both the front and back surfaces of the base material 2 is continuously manufactured.
The surface materials 3a and 3b are in the form of the above-mentioned sheet represented by a nonwoven fabric, but the first surface material 3a supplied to the first roll 23a and the second surface material supplied to the second roll 23b are used. It is preferable that the material of the surface material 3b be different, and that a thermoplastic resin be used as at least the first surface material 3a. In particular, it is preferable that the first surface material 3a has a lower melting point than the second surface material 3b. Thus, the first surface material 3a exhibits high elongation, and the unevenness 24 on the surface of the first roll 23a can easily form a clear unevenness shape 4 on one surface of the base material 2.
Further, the tension applied to the base material 2 can be supported by the second surface material 3b having higher rigidity, so that the elongation of the base material 2 at the time of roll forming and the deformation of the uneven shape 4 are suppressed, and the forming is performed. The subsequent dimensional stability is very good. Therefore, the production of the vibration damping and sound insulating sheet 1 having the irregularities 4 on the surface can be easily realized.
[0022]
As a combination of the first and second surface materials 3a and 3b, for example, it is preferable to use polypropylene as the first surface material 3a and polyester as the second surface material 3b. Further, as the second surface material 3b, glass fiber or the like may be used. Commercially available polypropylene has a melting point ranging from 165 ° C. to 176 ° C. as described above. Even when confirmed by the present inventors, it was completely dissolved at 180 ° C. For this reason, the asphalt-based mixture kneaded at 150 to 200 ° C sufficiently softens and enhances extensibility. The temperature during roll forming is set to a temperature at which the surface materials 3a and 3b do not melt (that is, the melting point or lower). If the temperature during roll forming is too high, inconveniences such as melting of the surface materials 3a and 3b and perforation may occur.
[0023]
As described above, the present invention has been described based on the preferred embodiments. However, the present invention is not limited to only the embodiments, and various modifications can be made without departing from the gist of the present invention.
For example, in the vibration damping and sound insulating sheet 1 of the above-described embodiment, the irregularities 4 are provided on only one surface of the substrate 2, but the irregularities 4 may be provided on both surfaces of the substrate 2.
As a method of manufacturing the vibration damping sound insulating sheet 1 having the irregularities 4 on both surfaces of the base material 2, for example, in FIG. 1B, instead of smoothing the second roll 23 b, If irregularities are also provided on the surface, irregularities 4 can be formed on both surfaces of the base material 2 by the first and second rolls 23a and 23b.
[0024]
As another method, as shown in FIG. 4, two sets of forming rolls 23 </ b> A and 23 </ b> B composed of a first roll 23 a having irregularities 24 and a smooth second roll 23 b are used. A method of providing the uneven shape 4 on each surface of the material 2 one by one.
In this method, the upper first roll 23a (31) and the lower second roll 23b (34) are disposed on the side of the second surface material 3b. In addition, the upper second roll 23b (32) and the lower first roll 23a (33) are disposed on the first surface material 3a side.
At this time, it is preferable that the temperature of the upper and lower first rolls 23a (31, 33) be a heating roll, and the upper and lower second rolls 23b (32, 34) be a cooling roll. Further, it is preferable to use a low melting point material such as polypropylene as the surface materials 3a and 3b. Thereby, the surface material 3 which is in contact with the first roll 23 a having the irregularities 24 is easily stretched by heating, and the clear irregularities 4 can be easily formed on the surface of the substrate 2. Further, since the surface material 3 in contact with the cooled second roll 23b has relatively high rigidity due to cooling, the tension applied to the base material 2 can be supported. Accordingly, it is possible to easily realize the production of the vibration damping and sound insulating sheet 1 having the irregularities 4 on both surfaces.
A cooling roll is disposed between the upper first roll 31 and the lower second roll 34 between the upper and lower forming rolls 23A and 23B, and a cooling roll is disposed between the upper second roll 32 and the lower second roll 32. By disposing a heating roll between the first roll 33 and the first roll 33, it is preferable that the lower forming roll 23 </ b> B heats the side on which the irregularities 4 are formed on the base material 2.
[0025]
In FIG. 4, the roll for supplying the first surface material 3 a is the upper second roll 32, but this may be the lower first roll 33. In this case, since the alfalt-based mixture 8 comes into direct contact with the surface of the upper second roll 32, it is preferable to wet the surface of the roll 32 with water or the like to enhance the releasability. .
[0026]
【Example】
In the kneader 20, the asphalt for waterproofing work was heated to 150 to 160 ° C and kneaded, and then iron powder as a filler heated to 40 ° C was charged and kneaded for a predetermined time to obtain an asphalt-based mixture. As the forming roll 23, a roll having irregularities 24 with a height of about 2 mm on the surface of the first roll 23a and having a smooth surface on the second roll 23b is used. While supplying a polypropylene non-woven fabric as the first surface material 3a and supplying a polyester (polyethylene terephthalate) non-woven fabric as the second surface material 3b to the surface of the second roll 23b, the first and second surface materials 3a and 3b are provided. In the meantime, the asphalt-based mixture 8 is extruded by the extruder 22, sandwiched between the first and second rolls 23a and 23b, formed into a sheet, and the vibration damping and sound insulating sheet 1 having a thickness of about 6 mm is formed. Obtained.
When the obtained vibration damping and sound insulating sheet 1 was visually observed, the unevenness 4 having a depth of about 2 mm was clearly formed on one surface, and the base material 2 and the surface materials 3a and 3b were firmly and sufficiently. It was laminated and joined with great strength.
[0027]
Next, as shown in FIG. 5, this vibration damping and sound insulating sheet 1 was used as a floor base material. That is, a large number of floor base panels 11 made of particle board or the like were laid on the support legs 13 erected on the concrete slab 12 to form a floating floor. A vibration-damping and sound-insulating sheet 1 was laid on a floor base panel 11 constituting the floating floor, and a floor plate 14 was further stretched on the vibration-damping and sound-insulating sheet 1 to form a floor surface, thereby forming a double floor 15. . When a pedestrian was allowed to walk on the double floor 15, the floorboard 14 was not inclined or uneven, and a horizontal floor was formed. Further, when a vibration damping test of the double floor 15 was performed, excellent vibration damping performance was shown.
After that, when the vibration damping sound insulating sheet 1 was removed from the double floor 15 and the uneven shape 4 of the vibration damping sound insulating sheet 1 was observed, there was no collapse of the uneven shape 4 and the same shape as before the construction was maintained. Was.
[0028]
【The invention's effect】
As described above, the method for producing a vibration damping sound-insulating sheet of the present invention provides a base material by passing an asphalt-based mixture containing asphalt and a filler between first and second rolls disposed opposite to each other. When forming, while using a first roll having an uneven shape on the surface, a sheet-like surface material is supplied between the surface of the roll and the asphalt-based mixture, and the surface material is Since the vibration-damping and sound-insulating sheet comprising the base material and the surface material is manufactured by laminating and joining to the surface of the base material, the asphalt-based mixture is formed into a sheet by the first and second rolls to form a base material. During molding, adhesion between the roll and the asphalt-based mixture can be prevented, and sufficient workability can be ensured. In addition, since the uneven shape formed on the surface of the first roll can be transferred to the base material, the vibration-damping and sound-insulating sheet having the uneven surface can be continuously mass-produced, and the productivity is extremely high. high.
[0029]
By providing unevenness on the surface of the vibration-damping and sound-insulating sheet, vibration of the floorboard and the like can be cut off, and improvements in vibration-damping performance, sound-insulating performance, cushioning properties, and air permeability can be expected.
Further, since the sheet-like surface material is integrally attached to the base material by the adhesive force (tack) of the asphalt-based mixture, it can be laminated without applying an adhesive or the like. In addition, by providing a surface material on the surface of the vibration-damping and sound-insulating sheet, the adhesive force on the surface of the vibration-damping and sound-insulating sheet is suppressed, so that it does not stick to hands and feet during transportation and construction, and is excellent in handling. It will be.
[0030]
In this method of manufacturing a vibration damping and sound insulating sheet, the material of the surface material supplied to the surface of the first roll has a lower melting point than the material of the surface material supplied to the surface of the second roll. It is preferable that Thereby, the surface material supplied to the surface of the first roll (hereinafter, also referred to as a first surface material) is changed to the surface material supplied to the surface of the second roll (hereinafter, also referred to as a second surface material). ), The tension applied to the base material can be supported by the second surface material having higher rigidity, so that a clear uneven shape can be easily formed on one surface of the base material. In addition, it is possible to suppress the elongation of the base material and the deformation of the uneven shape during roll forming. Therefore, it is possible to easily manufacture a vibration damping and sound insulating sheet having irregularities on the surface.
[0031]
In the vibration damping and sound insulating sheet according to the present invention, an asphalt-based mixture containing asphalt and a filler is formed into a sheet to form a base material, and a sheet-like surface material is laminated and joined to both surfaces of the base material. In addition, since the uneven shape is formed on one surface of the base material, the base material and the sheet-like surface material, without the use of an adhesive or the like, asphalt-based mixture Since the layers are laminated and joined by adhesive force, the structure can be made simple, and the production can be easily performed.
Since the surface of the vibration-damping and sound-insulating sheet is provided with irregularities, it is possible to cut off vibrations such as floor materials and air, and it can be expected to improve vibration-damping performance, sound-insulating performance, cushioning properties, and air permeability.
[Brief description of the drawings]
FIG. 1A is a perspective view showing an embodiment of a vibration damping sound insulating sheet of the present invention. (B) It is the schematic explaining one Embodiment of the manufacturing method of the vibration damping sound insulation sheet of this invention.
FIG. 2 is a perspective view showing a state in which the vibration-damping and sound-insulating sheet of the present invention is formed into a long band shape and is formed into a roll.
FIG. 3 is a perspective view showing another embodiment of the vibration damping and sound insulating sheet of the present invention.
FIG. 4 is a schematic view illustrating another embodiment of the method for producing a vibration damping and sound insulating sheet of the present invention.
5A is a perspective view and FIG. 5B is a cross-sectional view illustrating an example in which the vibration damping and sound insulating sheet of the present invention is applied to a floor base material.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vibration suppression sound insulation sheet, 2 ... Substrate, 3 ... Surface material, 3a ... 1st surface material, 3b ... 2nd surface material, 4 ... Unevenness of base material, 8 ... Asphalt type mixture, 23a ... 1 roll, 23b: second roll, 24: unevenness of roll.

Claims (4)

When an asphalt-based mixture containing asphalt and a filler is formed into a substrate by passing between first and second rolls disposed opposite to each other, a sheet is interposed between the surface of the roll and the asphalt-based mixture. A method for producing a vibration-damping sound-insulating sheet, comprising: supplying a surface material having a shape, laminating and joining the surface material to both surfaces of the substrate, and producing a vibration-damping sound-insulating sheet comprising the substrate and the surface material. ,
A method for producing a vibration-damping and sound-insulating sheet, characterized in that the first roll is provided with irregularities on the surface, thereby forming irregularities on the surface of the substrate. 2. The vibration damper according to claim 1, wherein the surface material supplied to the surface of the first roll has a lower melting point than the surface material supplied to the surface of the second roll. 3. Manufacturing method of sound insulation sheet. An asphalt-based mixture containing asphalt and a filler is formed into a sheet to form a base material, and a sheet-like surface material is laminated and joined to both surfaces of the base material, and at least one surface of the base material A vibration-damping and sound-insulating sheet, characterized in that an uneven shape is formed on the sheet. The uneven shape is formed on one surface of the base material, and the surface material on the side where the uneven shape is formed has a lower melting point than the surface material on the other surface. Item 4. The vibration damping and sound insulating sheet according to Item 3.

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