KR20170040700A

KR20170040700A - Air mat for prevention noise between floors

Info

Publication number: KR20170040700A
Application number: KR1020150140002A
Authority: KR
Inventors: 안정배
Original assignee: 안정배
Priority date: 2015-10-05
Filing date: 2015-10-05
Publication date: 2017-04-13
Also published as: KR101745862B1

Abstract

The present invention relates to a mat for reducing noise between floors. The present invention is laid in spaces where children or infants are active. As a result, the present invention significantly reduces noise between floors that can be generated as a result of their activities. The mat for preventing noise between floors according to the present invention includes: an upper surface member and a lower surface member forming surfaces of the mat, edge portions of the surface members being attached to each other to form an inner buffer space; and a buffer member formed inside the buffer space and preventing noise between floors. The buffer member includes an air layer. The air layer includes an air cap layer that has multiple air caps. The air cap layer includes: a first sheet having a plurality of convex protruding portions such that an air-filled sealing space is provided in which air is present so that the air caps are formed; and a second sheet attached to the first sheet and blocking the protruding portions such that the air-filled sealing space is sealed in a state where the protruding portions are filled with air.

Description

TECHNICAL FIELD [0001] The present invention relates to an air damper,

The present invention relates to a mat for preventing interlayer noise of a multi-story building. More particularly, the present invention relates to an air cap mat for preventing noise between layers, which has the effect of reducing vibrations or impact noise generated in the bottom surface of the upper layer by using a laminated mat including the air cap and eliminating noise transmitted to the lower layer. Particularly, the air-gap mat for preventing interlayer noise according to the present invention is laid in an active space of a child or a child, thereby providing an epoch-making effect for preventing interlayer noise which may be caused by activity of a child or the like. Although the term 'air cap' is used herein, it may also be referred to as an 'air bag', 'ever pocket' or simply 'air'.

Since the upper and lower ceilings are shared by two or more layers of the same structure called the interlayer slab, the noise generated in the upper layer is transmitted to the lower layer through the interlayer slab.

In particular, in the case of apartment houses where floors should be shared with neighboring households, noise and vibration caused by walking, children's jogging, falling objects, and other furniture are transmitted to neighboring households, .

In order to solve the interlayer noise problem such as the floor impact sound of the apartment house, the relevant regulations are reflected in the "Housing Construction Standard, etc.". According to this regulation, the inter-floor noise prevention standard of the apartment building for improving the residential environment is set.

In this regulation, especially the floor impact sound blocking performance, lightweight floor impact sound (noise based on the used frequency band due to falling and chair chopping sound) is less than 58dB, heavy floor sound impact sound (low frequency band noise caused by walking, Is set to 50 dB or less.

Various means have been proposed to minimize such interlayer noise. Korean Patent No. 10-1530822 (hereinafter referred to as "Prior Art 1") provides a method of suppressing interlayer noise by including a buffer agent on the floor surface during the construction of a building. In the above-mentioned first invention 1, the generated vibration energy is passed through a structure in which the vibration energy is passed through the multi-layered structure to uniformly disperse the vibration, rotate the direction of vibration to weaken the final vibration transmitted to the bottom slab, The present invention relates to an interlayer vibration noise reducing material for a residential building that reduces noise when the frequency is changed during transmission.

Another prior invention is Korean Patent No. 10-1465410 (hereinafter referred to as " Previous invention 2 "). According to a second aspect of the present invention, there is provided an interlayer noise preventing structure for a building installed on a floor slab of a building, wherein an air cap is densely protruded over the entire area of one surface, A gas filled air cap mat filled with a gas mixed with air of a mass greater than that of air so that the volume of the gas of a large mass is 50% or more, and an upper mat located above the gas filled air cap mat An air cap mat-based noise barrier layer having a protective layer and installed on an upper surface of the bottom slab; A floor finish layer disposed above the air cap mat based noise barrier; And a support layer disposed between the air barrier mat-based noise barrier layer and the bottom finishing material layer, thereby increasing the sound insulation effect of the air cap mat.

The latter of the above-mentioned prior arts has a common point in that the air layer to which the present invention is intended to be used is used. However, the above-mentioned prior arts have improved the structure of the bottom slab at the time of construction of the floor slab, and are not a mat type that can remove the interlayer noise by further positioning the floor slab as required in the present invention. That is, the present invention differs from the above-described prior arts in that it is a technique applied to a mat for removing interlayer noise in addition to the above-mentioned prior arts.

In addition, it is costly and time-consuming to apply such a buffer to existing buildings in which the buffer for preventing interlayer noise is not included in the floor slab itself, and it is difficult to re-install the floor itself.

In order to overcome this problem, it is tried to eliminate the interlayer noise by disposing a mat using foamed synthetic resin on the floor of the upper layer, but it is a reality that a simple mat is hard to exclude vibration and impact noise.

A mat for reducing the interlaminar noise by additionally laying in an appropriate place as disclosed in the present invention is disclosed in Korean Patent No. 10-1474899 (hereinafter referred to as "Prior Art 3"). The above-described prior art 3 is a mat for preventing noise between layers, wherein a buffer is formed by laminating an upper buffer member and a lower buffer member made of a foamable synthetic resin capable of buffering and sound absorption, And an air tube portion laminated between the upper cushioning member and the lower cushioning member and extending in the longitudinal direction and having a plurality of air tubes formed in the width direction so as to be fused on both sides so as not to be closed at regular intervals in the longitudinal direction And an interlayer noise preventing mat. The above-mentioned prior art 3 has a common feature in that it uses a mat type and an air layer as in the present invention, but unlike the present invention, the flatness of the mat can not be maintained and only the air layer is formed, It is inefficient to dissipate the cause energy properly.

The present invention differs from the prior art 3 in that the mat of the present invention maintains the flatness of the mat unlike the previous invention 3 and has an efficient structure for enhancing the interlayer noise suppression effect by a combination of the air layer and the synthetic resin foam layer . When the prior art 3 is an air tube, the present invention has a great difference in that it uses a shape such as a bubble wrap. The bubble wrap is filled with air in an airtight space formed by a hemispherical form and is advantageous for maintaining the flatness of the mat without using an air tube formed as in the prior art 3.

As described above, the hemispherical foam is disclosed in Korean Patent Laid-Open Publication No. 10-2014-0143664 (hereinafter referred to as "Prior Art 4"), but it is only intended to obtain a thermal insulation effect, Otherwise. The structure for increasing the efficiency described later is not disclosed.

KR Patent Publication B1 10-1530822 (Jun. KR Patent Publication B1 10-1465410 (2014.11.20.) KR Patent Registration No. B1 10-1474899 (Dec. 19, 2014) KR Patent Publication No. 10-2014-0143664 (Dec. 17, 2014).

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to disclose a technique for excluding vibrations and shocks from being transmitted to a lower layer by using a mat including an air cap.

The present invention intends to more effectively block the interlayer noise and vibration transmission by making the air layer and layers of different materials function in a complex manner.

The present invention seeks to maintain the flatness of the mat by allowing each stacked layer to be structurally or morphologically interrelated.

The present invention intends to increase the efficiency of a mat while lowering the height by making each stacked layer structurally or morphologically correlated.

It is an object of the present invention to provide an air cap mat for preventing noise between layers by using a polyethylene foam layer and a polyurethane foam layer with controlled density to reduce the manufacturing cost of the mat and effectively eliminate vibration and interlayer noise.

According to an aspect of the present invention, there is provided a surface acoustic wave device comprising: an upper surface member and a lower surface member which form a surface of a mat and have rim portions attached to each other to form a buffer space therein; Wherein the air cushion layer includes an air cap layer in which a plurality of air caps are formed, and the air cap layer is formed by air filling the air cap so that the air cap is formed, A first sheet having a plurality of convex protrusions for providing a confined space; And a second sheet attached to the first sheet to close the hemispherical protrusion so as to seal the air-filled hermetically sealed space with the plurality of protrusions filled with air, and discloses an air-cap mat for preventing inter- .

And the convex protrusion is a hemispherical protrusion.

The air cap layer may further include a reinforcing sheet continuously attached to the upper portion of the protruding portion so that the adjacent air cap is interlocked and deformed when there is a pressing action.

The reinforcing sheet may be an elastic sheet.

In the present invention, two or more of the air cap layers are stacked, and the second sheet is continuously attached to the upper portion of the protruding portion of the air cap layer located below, so that when the air cap is pressed, .

The buffer member may further include a foam layer made of a synthetic resin.

The synthetic resin foam layer may be a polyurethane foam layer.

The upper surface member and the lower surface member may be formed of a single or two or more layers of polyethylene foam.

Wherein the synthetic resin foam layer is positioned on the first sheet of the air cap layer and has a concave groove corresponding to the air cap, and a part or the whole of the air cap is located in the concave groove, and the air cap layer and the synthetic resin foam layer It is possible to reduce the thickness thereof.

The present invention is characterized in that two or more of the air cap layers are stacked so that two air cap layers are laminated facing each other and the air caps of the air cap layers facing each other are arranged to be shifted from each other, And is positioned between the air caps.

The present invention is characterized in that a restoration sheet for restoring the air cap to its original position is laminated between the air cap layers stacked on each other.

According to the present invention, the interlayer noise can be remarkably reduced. This will allow children and children to work freely.

According to the present invention, not only the air layer but also layers of different materials act in a composite manner, thereby effectively interrupting the noise and vibration transmission between the layers.

According to the present invention, the laminated layers are structurally or morphologically interconnected so that the flatness of the mat is maintained.

According to the present invention, the stacked layers are structurally or morphologically related to each other so that the efficiency of the mat can be increased while the height thereof can be lowered.

According to the present invention, a polyethylene foam layer and a polyurethane foam layer having controlled density can be used to reduce the manufacturing cost of a mat, and effectively provide an air cap mat for preventing noise between layers and noise.

1 to 4 show a first embodiment of the present invention, wherein FIG. 1 shows a partially cut-away sectional view. 2 is an exploded perspective view of the assembly. FIG. 3 is a partially enlarged view of an enlarged portion 'A' of FIG. 2, and FIG. 4 is an enlarged view of a portion of the incised portion taken along the line BB ' will be.
Fig. 5 is a cross-sectional view of the cylindrical air cap corresponding to Fig. 4. Fig.
6 is a diagram showing an embodiment of the prior art of the prior art.
7 is a diagram showing the operation of the prior art in the related art.
FIG. 8 is a partly transparent view showing the operation of the first embodiment of the present invention.
9 and 10 show a reinforced air cap layer as a second embodiment of the present invention.
11 and 12 illustrate a reinforced and stacked air cap layer as a third embodiment of the present invention.
13 to 15 show another embodiment of the present invention in which a synthetic resin foam layer and an air cap layer are laminated. FIG. 13 shows an air cap layer formed above and below a synthetic resin foam layer, FIG. 14 shows a synthetic resin foam layer FIG. 15 shows a structure in which the synthetic resin foam layer and the air cap layer correspond to each other.
FIGS. 16 and 17 show another embodiment of the present invention, wherein FIG. 16 shows the air cap layer facing each other, and FIG. 17 shows the state where the restoration sheet is formed between the facing air cap layers.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. .

1 to 4 show a first embodiment of the present invention, wherein FIG. 1 shows a partially cut-away sectional view. 2 is an exploded perspective view of the assembly. FIG. 3 is a partially enlarged view of an enlarged portion 'A' of FIG. 2, and FIG. 4 is an enlarged view of a portion of the incised portion taken along the line BB ' will be.

The present embodiment basically comprises the upper surface member 10 and the lower surface member 20 which form the surface s of the mat and in which the rim portions 11 are attached to each other to form a buffer space 12 therein . A feature of the present invention is an interlayer noise preventing mat formed in the buffer space (12) and including a buffer member (30) for blocking the superfluous noise. The mat may be manufactured in a predetermined size, for example, 130 cm in width and 170 cm in length. Such a size is a simple example, and the technical idea of the present invention can be applied to any size.

The cushioning member 30 includes an air layer, and the air layer includes an air cap layer 40 having a plurality of air caps 41 formed therein. The air cap layer is formed of an air- A first sheet (44) having a plurality of convex protrusions to provide a space (42); And a second seat (45) attached to the first seat (44) so as to close the air filled hermetically sealed space with the plurality of protrusions filled with air to close the protrusions.

The convex protrusion is a hemispherical protrusion (43).

The upper surface member 10 and the lower surface member 20 may be formed of various materials, but they are generally made of a synthetic resin material. The upper surface member 10 and the lower surface member 20 may have a certain thickness by itself or may be effective in preventing interlayer noise by using foamed synthetic resin or the like. However, the features of the present invention relate to the structure of the buffer member 30 positioned between the upper surface member 10 and the lower surface member 20 as described later, and the upper surface member 10 Any material of the lower surface member 20 belongs to the technical scope of the present invention as long as it includes the buffer member 30 disclosed by the present invention.

The rim portion 11 may be bonded to the upper surface member 10 and the lower surface member 20 by welding.

The air layer may be formed of a plurality of layers as described later. In this embodiment, the air cap layer 40 having a plurality of air caps 41 formed by hemispherical protrusions 43 on one plane forms the air layer.

The shape of the convex protrusion is not limited to the hemispherical protrusion. For example, a cylindrical air cap may be formed. Such a shape does not limit the technical idea of the present invention. Fig. 5 is a cross-sectional view of the cylindrical air cap corresponding to Fig. 4. Fig. The reference numerals in FIG. 5 are the same as those in the first embodiment.

The first sheet 44 and the second sheet 45 are brought into contact with each other to be fused, and an air-filled sealed space 42 is formed in the hemispherical protrusion 43. In this specification, the term sheet is used. Usually, a sheet means a thin plate. In the case of the present invention, it means generally a flowable thin plate of a synthetic resin material. The use of terms such as film or film may be used, and the technical idea of the present invention is not limited by the use of such terms.

4, the first sheet 44 is an upper sheet, and the second sheet 45 is a lower sheet. The air filling sealed space 42 is independently filled with air. The upper sheet 44 and the lower sheet 45 may be made of synthetic resin or the like having various materials capable of forming the air-filled hermetically sealed space 42.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described in an intuitive manner using a so-called " bubble wrap " shape. The shape of the bubble wrap is also commonly referred to as a " bobbin ". Generally, it is used for a function such as keeping warm, but the present invention intends to strengthen the material thereof to realize an interlayer noise prevention function.

As mentioned in the description of the prior art 4, the air layer can be divided into a tube shape and a hemispherical protrusion shape. In the present specification, the protrusion is referred to as an " air cap ". As already described, a typical type of the protrusion is the hemispherical protrusion 43. [ 6 is a view showing an embodiment of the prior art 4 of the related art. As shown in FIG. 6, which is a view of the prior art 4, a tube-shaped or air-cap-shaped air layer has been used for the purpose of conventional warming or the like. However, these are not used to reduce the interlayer noise, and the configuration of the present invention is not easily selectable by those skilled in the art. The prior art 3 is a patented prior art, which has technical specificity in that the above-mentioned air layer is used for the interlayer noise-suppressing mat.

However, the present invention differs from the above-mentioned prior art 3 in that the flatness of the mat is maintained through the air cap, and since the air layer has a complex function, it has an efficient structure for enhancing the interlayer noise- .

7 is a diagram showing the operation of the prior art in the related art. FIG. 7 shows the operation of the 'air tube' used in the prior art 3. 7, when the air layer is formed in the shape of a tube (a) so that a shock (p) as shown by a downward arrow is generated, the rebound (r) do. Such a recoil has a problem that the flatness of the mat as a whole can not be maintained. Visually, a rugged surface is formed, which is bad. That is, according to the prior art 3, as the mat is used, the surface unevenly comes and goes out, which is not preferable in terms of aesthetics and function. Further, in the prior art 3, the tube shape (a) is communicated at the joint part (b) as shown in FIG. This has the effect of creating a rugged surface in the entire mat as indicated by two rebound (r) arrows in Fig.

On the other hand, the present invention solves the problems of the above-described prior art 3 by applying the air cap 41 which is a hemispherical protrusion in point units. FIG. 8 is a partly transparent view showing the operation of the first embodiment of the present invention. As shown in FIG. 8, when the impact p is applied to the present invention, unlike the prior art 3, a plurality of hemispherical protrusions act independently, and it is confirmed that only the portion where the impact p is applied is deformed have. The hemispherical protrusion is filled with a gas (air, for example) in a closed space formed by a hemispherical form, and is advantageous for maintaining flatness of the mat without using an air tube formed as in the prior art 3.

On the other hand, when the air cap 41 formed of the hemispherical protrusion 43 described above is used, the resistance strength may need to be increased more if necessary. In this case, if the air cap layer 40 is newly designed and formed, the cost may be separately generated and may not be economical. Therefore, the present invention provides a configuration in which the air cap 41 is reinforced so as to press against the impact p more strongly, that is, to press less than when pressed with the same strength. 9 and 10 show a reinforced air cap layer as a second embodiment of the present invention. On the other hand, the first sheet 44, the second sheet 45 and the reinforcing sheet 51 shown in Figs. 9 and 10 may be made of a transparent material. However, for the sake of understanding of the drawings, the transparent portion is omitted.

The structure of the reinforced air cap layer further includes a reinforcing sheet 51 continuously attached to the upper portion 50 of the projecting portion of the air cap layer 40. When there is a pressing action, ) Are interlocked and deformed. The reinforcing sheet 51 is an elastic sheet.

The upper portion 50 of the protrusion is a part of the first sheet 44. And the reinforcing sheet 51 is attached to the upper portion of the protrusion 50 which is a part of the first sheet. In this case, as described above, the air cap 41 does not act independently due to the pressing action, but acts together with the adjacent air cap 41 and the reinforcing sheet. Whereby the reinforcing sheet 51 is pressed with less pressure than in the case where the reinforcing sheet 51 is not provided, and the effect of increasing the strength can be obtained.

The reinforcing sheet 51 may be elastic. If the elasticity of the reinforcing sheet 51 is appropriately adjusted as required, the degree of resistance to the impact of the air cap layer 40 can be controlled.

A plurality of the air cap layers 40 may be stacked as needed to improve the cushioning effect. In this case, the above-described function of the reinforcing sheet 51 can be performed by the second sheet located on the upper layer. 11 and 12 illustrate a reinforced and stacked air cap layer as a third embodiment of the present invention.

The air cap layer 40 described above may be stacked two or more as necessary. In this case, the second sheet 45 is continuously attached to the upper portion 50 of the protruding portion of the air cap layer 40 located below, and if there is a pressing action, the adjacent air cap 41 interlocks It can be deformed. The reinforcing sheet 51 functions similarly to the reinforcing sheet 51 described above.

In the meantime, the present invention can achieve a higher level of interlayer noise prevention effect by laminating the synthetic resin foam together with the air layer. 13 to 15 show another embodiment of the present invention in which a synthetic resin foam layer and an air cap layer are laminated. FIG. 13 shows an air cap layer formed above and below a synthetic resin foam layer, FIG. 14 shows a synthetic resin foam layer FIG. 15 shows a structure in which the synthetic resin foam layer and the air cap layer correspond to each other. FIG. 15 is a broken line showing a state where an air cap in a foam layer made of a synthetic resin and a concave groove to be described later are combined to clearly show the corresponding structure.

In the case of this embodiment, in addition to the air cap layer 40 already described, a foam layer made of a synthetic resin is characterized. That is, the buffer member 30 further includes a synthetic resin foam layer. In the present embodiment, the synthetic resin foam layer is a polyurethane foam layer 60.

The 'foam' in the synthetic resin foam layer means 'foam', which means a foaming agent. The polyurethane foam layer is a urethane resin formed by bubbling bubbles and diaphragms. The polyurethane foam layer is preferable as the buffer member 30 because the specific gravity is small and light. In the case of this embodiment, a 10 mm thick high-density polyurethane foam layer was formed.

On the other hand, the upper surface member 10 and the lower surface member 20 are formed of a single or two or more layers of a polyethylene foam layer 70. Polyethylene (PE) is divided into low density polyethylene (LDPE), high density polyethylene (HDPE) and high density polyethylene (PE) depending on the degree of side chain. Low density polyethylene (LDPE) has high cold resistance, transparency and good flexibility. It is used as a packaging film, disposable glove, disposable bag, flexible container of mayonnaise and ketchup, inner layer of laminate packing material and high density polyethylene (HDPE) It is opaque and lacks flexibility. However, it is also used for packaging materials of foods heat-sterilized by high temperature because of high heat-resistant temperature. In this embodiment, a 10 mm high density polyethylene foam layer was applied as one layer or two layers.

When the air cap layer 40 and the synthetic resin foam layer are laminated on the buffer member, the effect of preventing the inter-layer noise is improved, but the thickness tends to be increased. In this case, it is preferable that means for lowering the thickness while using both the air cap layer 40 and the synthetic resin foam layer, which are different forms, are provided.

15 is a view showing a corresponding structure of the air cap layer and the synthetic resin foam layer according to still another embodiment of the present invention.

The polyurethane foam layer 60 is formed on the first sheet of the air cap layer 40 and has a concave groove 80 corresponding to the air cap 41. The air cap 41 is formed with a concave groove 80, The thickness of the air cap layer 40 and the synthetic resin foam layer are reduced when the air pocket layer 41 is partially or entirely placed in the concave groove 80. That is, the thickness of the two types can be minimized while appropriately coping with various types of impacts.

FIGS. 16 and 17 show another embodiment of the present invention, wherein FIG. 16 shows the air cap layer facing each other, and FIG. 17 shows the state where the restoration sheet is formed between the facing air cap layers.

In the present embodiment, two or more air cap layers are laminated, two air cap layers are laminated facing each other, and air caps of the air cap layers facing each other are arranged to be shifted from each other, and the air cap layer 40, And is located between the air cap (41) and the air cap (41). This is like a structure corresponding to the air cap layer and the synthetic resin foam layer described above.

In this case, the noise reduction efficiency is greatly improved because not only the shock absorption by the air cap but also the shock absorption by entering the air cap between the air cap and the air cap of the facing air cap layer is further absorbed.

Furthermore, it is preferable that a restoration sheet 90 is laminated between the facing air cap layers so as to restore the air cap to the original position. This is because the restoration sheet 90 can easily restore the air cap 41, which is further inserted by the pressing action, back to its original position. Of course, even if the restoration sheet 90 is not provided, the strength of the air cap 41 can be appropriately restored when the pressing action is removed.

Although the present invention has been described with reference to specific embodiments, the present invention is not limited thereto. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

10: upper surface member
11:
12: Buffer space
20: Lower surface member
30: buffer member
40: air cap layer
41: air cap
42: air-filled sealed space
43: Hemispherical protrusion
44: first sheet
45: second sheet
50: upper part of the projection
51: reinforced sheet
60: polyurethane foam layer
70: polyethylene foam layer
80: concave groove
90: Restore sheet
s: surface
p: shock
r: recoil
a: tube
b:

Claims

An upper surface member 10 and a lower surface member 20 which form the surface s of the mat and in which the rim portions 11 are attached to each other to form a buffer space 12 therein; And
And a buffer member (30) formed in the buffer space to block the filling noise,
Wherein the buffer member comprises an air layer,
The air layer includes an air cap layer (40) having a plurality of air caps (41)
The air cap layer includes a first sheet (44) having a plurality of convex protrusions to provide an air-filled hermetically sealed space (42) in which air is introduced to form the air cap; And a second sheet (45) attached to the first sheet so as to seal the air filling sealing space in a state where the plurality of protrusions are filled with air to close the protrusions
Air cap mat for interlayer noise prevention.

The method according to claim 1,
Characterized in that the convex protrusion is a hemispherical protrusion (43)
Air cap mat for interlayer noise prevention.

The method according to claim 1,
The air cap layer (40) further includes a reinforcing sheet (51) continuously attached to the upper portion (50) of the projecting portion,
And the adjacent air cap (41) is interlocked and deformed when there is a pressing action
Air cap mat for interlayer noise prevention.

The method of claim 3,
The reinforcing sheet (51) is an elastic sheet
Air cap mat for interlayer noise prevention.

The method according to claim 1,
At least two air cap layers 40 are stacked,
The second sheet is continuously attached to the upper portion (50) of the protrusion of the air cap layer (40) located below,
And the adjacent air cap (41) is interlocked and deformed when there is a pressing action
Air cap mat for interlayer noise prevention.

The method according to claim 1,
The buffer member (30) further comprises a synthetic resin-made foam layer
Air cap mat for interlayer noise prevention.

The method according to claim 6,
Wherein the synthetic resin foam layer is a polyurethane foam layer (60)
Air cap mat for interlayer noise prevention.

The method according to claim 1,
Characterized in that the upper surface member and the lower surface member are formed of a single or two or more layers of polyethylene foam layers
Air cap mat for interlayer noise prevention.

8. The method of claim 7,
The synthetic resin foam layer is positioned on the first sheet of the air cap layer 40,
A concave groove corresponding to the air cap 41 is formed,
Characterized in that a part or the whole of the air cap (41) is located in the concave groove, and the thickness of the air cap layer (40) and the synthetic resin foam layer is reduced
Air cap mat for interlayer noise prevention.

The method according to claim 1,
Wherein at least two air cap layers are stacked,
Two air cap layers are stacked facing each other,
The air caps of the air cap layers facing each other are arranged to be shifted from each other,
Characterized in that the air cap is located between the air cap (41) and the air cap (41) of the facing air cap layer (40)
Air cap mat for interlayer noise prevention.

11. The method of claim 10,
Between the opposed air cap layers,
Characterized in that a restoration sheet for restoring the air cap to its original position is laminated
Air cap mat for interlayer noise prevention.