JPS6052333A - Heat-insulating sound-insulating mat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat-insulating and sound-insulating mat for residential use that has improved sound-insulating performance and heat-insulating performance.

In recent years, many sound insulation technologies and materials have been researched and developed to deal with problems such as residential noise, while various insulation technologies and materials have been researched and developed to save resources and energy and improve livability. As a result of this research, excellent materials and techniques have been created in both the sound insulation and thermal insulation fields, which are now used in many homes. However, the reality is that there are no practical materials that exhibit excellent sound insulation and heat insulation performance, and that satisfy the performance of many building materials.For example, regarding sound insulation technology and materials, resonance transmission in the low frequency range The appearance of sound insulation defects due to dew condensation has become a problem, and this problem cannot be solved without extreme weight increase, etc. In addition, there are still problems with insulation technology and materials, such as a decline in insulation performance due to condensation. In particular, in order to efficiently improve sound insulation performance and heat insulation performance at the same time, it is necessary to use a breathable insulation material as a sound absorbing material. In addition, the performance requirements for houses and building materials are usually extremely diverse, including the above performance, and there are very few building materials that comprehensively satisfy these requirements.Therefore, many functional materials must be used in combination. For this reason, construction of these usually requires a great deal of labor and expense.

The present invention was developed in view of this situation, and it improves the sound insulation defects that are harmful to sound insulation, maintains the initial insulation performance without causing dew condensation for a long period of time, and improves the performance of each part of a house with a complex structure. In general, in order to improve sound insulation performance, it is necessary to increase the weight and thickness of the wall, create multiple walls, insert sound absorbing materials, and prevent gaps (
However, even if overall sound insulation performance is improved by these measures, low For example, in ALC walls, there are many cases in which sound insulation defects inherent to the structure and materials used appear due to resonance transmission in the sound range and coincidence effects. Even in walls that are relatively heavy and have a structure that is said to have generally high sound insulation properties, such as cast-in-place concrete walls, sound insulation defects appear in the low frequency range, and there are many cases where noise problems occur frequently. In wooden houses with small walls and poor airtightness, the overall sound insulation performance can be slightly improved by using soft sound insulation sheets, etc. to prevent the increase in weight and gaps. The sound insulation defects caused by this are hardly improved.

Conventional measures to deal with these sound insulation deficiencies are to strengthen the general sound insulation measures mentioned above, that is, to make the sound insulation structure more heavily equipped as a whole, and to move the missing frequencies more or less away from the main audible frequency range (for example, 125Hz to 4000Hz). , and also attempted to improve the sound insulation level in the defective area by improving the overall sound insulation level. In addition, in some cases, the acoustic radiation coefficient is made smaller by allocating one side of the material to reduce the sound insulation loss caused by the coincidence effect. However, the temperature caused by these methods has not been able to efficiently reduce sound insulation defects, and has often forced large sacrifices in economical efficiency.

On the other hand, for insulation materials mainly used to insulate houses and prevent surface condensation, non-permeable high-performance insulation materials with a small moisture permeability coefficient and low thermal conductivity, such as highly expanded polyvinyl chloride, are used. etc. have been developed and manufactured,
In general, the ability to impart sound insulation properties to walls is poor, and when sound insulation properties are important, fibrous or open-cell foam insulation materials with high sound absorption properties are preferably used. However, this sound-absorbing insulation material has a high rate of moisture permeation due to its breathability, and internal condensation occurs in a very short period of time in winter, so it does not lose its insulation performance, and it also tends to shorten the lifespan of the house due to corrosion. To prevent this, cover the insulation with a non-permeable film, or
In many cases, the surface layer of the insulation material or the indoor wall surface is made non-permeable, but in the former case, water vapor can enter through pinholes, and in the latter, water vapor can enter through gaps in the peripheral joints of the wall surface, causing internal condensation in the long term. There are many. There is also a method of increasing ventilation on the back side of the heat insulating layer, but this is extremely disadvantageous in terms of sound insulation. Therefore, although it is extremely important to fully demonstrate the insulation and sound absorption functions of breathable insulation materials, in reality it is difficult to maintain both functions for a long period of time, and this has become a problem. ing.

In addition, there are many cases in which the sound insulating material and the heat insulating material are installed almost simultaneously within the same wall surface, and both are often inserted, laminated, or stretched over the entire construction surface without any gaps. Therefore, in general, it takes time and effort to install them; for example, when installing soft sound insulation sheets and glass walls on a wooden house,
Glass wool is pushed into the complex structures of walls, ceilings, floors, etc. without any gaps, and the soft sound insulating sheets are stretched or laminated on beams, etc. to match the shape of the construction surface so that there are no gaps, and fixed with staplers, etc. It is also essential to perform tasks that require effort and attention.

Therefore, there is a strong demand for materials that can simultaneously and easily carry out heat and sound insulation construction, which requires time and effort, but there are few products that meet this requirement. There are problems such as difficulty in joining due to errors and poor airtightness at the joining site.

Moreover, panels are relatively expensive, and they always have drawbacks such as the loss of sound insulation performance.As shown in the picture above, the sound insulation performance deteriorates due to sound insulation loss.

Sufficiently preventing and eliminating the decline in insulation performance due to condensation and further improving workability are extremely important issues. However, in reality, it is extremely difficult to achieve these comprehensively. There has been a strong desire for the emergence of technologies and components that can achieve these goals.

The present invention has solved the above problems, and its gist is as follows:
A structure in which a soft sound-insulating sheet, a heat-insulating sound-absorbing material, and a soft sheet are laminated, wherein the heat-insulating sound-absorbing material is hermetically filled and sandwiched between the soft sound-insulating sheet and the soft sheet, and the soft sound-insulating sheet is The projected area in the thickness direction of the structure is sa,
Similarly, when the projected area of the adiabatic sound absorption film is sb and the projected area of the soft sheet is Sc, Sa 'B Sc ) 3b is 0.9Sa≧5b40.
45 PFr thermal shield 1-. This is related to one item.

The present invention will be explained below.

The heat-insulating and sound-insulating mat of the present invention has a sandwich structure in which a high-sound-absorbing heat-insulating material (1) and a heat-insulating sound-absorbing material (2) are sealed on one side of a soft sound-insulating sheet, and the outer periphery of the soft sound-insulating sheet is formed by sealing the two sheets together. It has a structure in which pleats are formed in the part, and the sandwich structure part has a high sound insulation function and a heat insulation function with excellent dew resistance, and the pleat part has a function of maintaining airtightness by preventing gaps. It has a construction adjustment function and a function to improve sound insulation defects in the sand inch structure that is the adjacent facing part.

The soft sound insulating sheet plays an important role in the configuration of the present invention. That is, as the weight increases, it becomes an acoustic sound insulating wall and exhibits high sound insulating properties. Furthermore, when the mats of the present invention are arranged adjacent to each other, the folds bonded and laminated to the soft sheet, which is the face material part of the sandwich structure, substantially make the acoustic behavior of the soft sheet significantly non-uniform, and the sandwich structure has It significantly improves sound insulation defects by dispersing the resonant transmission frequency of the double wall. In addition, since the mat of the present invention is tightly joined to other adjacent members by the pleats, no gaps are created, improving the airtightness of the entire construction surface such as walls and floors, and exhibiting a high sound insulation effect. Furthermore, the pleats also play the role of adjusting the distance between the centers of adjacent mats, and are well adapted to complex construction volume shapes.
It has the function of preventing dew condensation on the overall heat and sound absorbing material. As a soft sound insulating sheet, it is sufficient if it has an internal density of 5 to 9/d at least 1.0, has a degree of flexibility that is not self-supporting by itself, or is more flexible, and is non-moisture permeable. For example, there are sheets made by mixing and dispersing iron oxide powder in vinyl chloride, lead sheets, etc.As heat-insulating and sound-absorbing materials, fibrous heat-insulating materials such as glass wool and rock wool, which have high sound-absorbing properties, Open cell foams such as polyurethane, powder heat insulating materials such as wood flour and cotton waste powder, and heat insulating and sound absorbing materials that are a mixture or composite of these materials can all be used. Furthermore, in applications where heat insulation is not important, a material that emphasizes sound absorption may be used. Further, it is preferable that the heat-insulating and sound-absorbing material has appropriate flexibility.

The soft sheet seals the heat-insulating and sound-absorbing material together with the soft sound-insulating sheet, preventing condensation on the heat-insulating and sound-absorbing material, and exhibits sound insulation properties as one side of the acoustic double wall as a whole. In order to improve this effect, it is desirable to have an areal density of 0.4 kg/Wt or more, and in order to reduce sound insulation defects, it is desirable to have as much flexibility as possible. Moreover, if a soft sound insulation sheet is used as the soft sheet, the sound insulation performance will be further improved. Note that it is further advantageous for sound insulation to use the soft sound insulation sheet and/or a surface material formed with non-uniform surface density as the soft sheet.

Next, the projected areas of the soft sound insulating sheet, heat insulating sound absorbing material, and soft sheet in the thickness direction of the structure are Sll, Sb, and Sc, respectively.
Then, the relationship 8a4Sc>Sb would be required.Bb is the smallest because the heat-insulating and sound-absorbing material is wrapped in a soft sound-insulating sheet, and 3a is the smallest because the folds of the soft sound-insulating sheet exist on the outer periphery. However, the soft sheet must be bonded to the outer periphery of the heat-insulating and sound-absorbing material, that is, at least the innermost part of the pleats of the soft sound-insulating sheet, but it may be laminated over the entire pleat area. The sound insulating sheet and the soft sheet part may be integrally formed of the same soft sound insulating material, and the part other than the area filled with the heat insulating sound absorbing material may be formed as a pleat. Part face 9 (
The relationship between Sa-8b) and the projected area (Sb) of the heat-insulating and sound-absorbing material is important; that is, the relationship between Sa and Sb is at least 0.9
It must satisfy the following relationship: 0XSa, msb≧0.45X3a.

The folds have airtightness when joining the mat of the present invention with adjacent members, and when multiple mats of the present invention are used in construction, by laminating them with the face material of the sand inch structure, the face material can be It becomes substantially non-uniform and exhibits the effect of improving sound insulation defects according to the non-uniform area ratio. This heterogeneous area is desirably approximately 25 inches or more and less than 75 inches of sb, so %8b > 0.90
In 3a, the improvement effect on sound insulation defects is extremely small,
Furthermore, when 0.45XSa>Sb, the area of the folds is too large and the effect of improving sound insulation defects is almost saturated, making it difficult to obtain the above-mentioned non-homogenized area, and moreover, it becomes uneconomical, which is not preferable. 90 X 8a b S'b≧
It is necessary to satisfy the relationship of 0.45XSa.

Further, the projected shape in the thickness direction of the filled portion of the heat-insulating and sound-absorbing material needs to form a planar filling shape. The main part that performs both sound insulation and heat insulation functions is the filling part of the insulation sound absorbing material, so this part can be installed uniformly, evenly, and with high density on the construction surfaces such as walls, ceilings, and floors. desired. Therefore, it is necessary that the portion filled with the heat-insulating and sound-absorbing material has a flat filling shape.

5.3 Next, examples of the heat-insulating and sound-insulating mat according to the present invention are shown in FIGS. 1 to 4, and usage modes thereof are shown in FIGS. 5 to 9. Fig. 1 is a plan view of a sandwich structure in which the heat insulating sound absorbing material 3 and the soft sheet 2 near the center of the soft sound insulating sheet 1 are laminated, and Figs. 5 to 7 show structures constructed using a plurality of these. FIG. 3 is a cross-sectional view showing an example of how the heat-insulating sound-insulating mat is used.

The folded portion of the soft sound insulating sheet is laminated on the adjacent face material portion of the sandwich structure portion of the mat of the present invention. FIG. 2 is a plan view of an example in which the sandwich structure is provided close to the lower left corner, and FIGS. 8 and 9 are cross-sectional views showing examples of how the sandwich structure is used.

3 and 4 are plan views showing examples of the present mat having shapes other than rectangular shapes, and FIG. 3 is a mountain-shaped mat.

In FIG. 4, each is formed in a circular shape. Note that the shape can be arbitrarily formed depending on the construction site.

Figure 11 shows 1 plywood 4 (thickness 5.5 m, surface density 3.0 kg)
/rl), Soft sound insulation sheet made by mixing metal powder into polyvinyl chloride) 1 (Sandam ■S-5,
Zeon Kasei Co., Ltd. 111, thickness 0.6 M, areal density 2
．． 1kg/i), glass wool 3 (48: thickness 4
0m.

FIG. 10 is a cross-sectional view taken along the line A-A in FIG. 10 showing Comparative Example 1, which has a sand inch structure with a density of 4 s kg /, s ) and corresponds to a normal on-site construction example or a panel structure.

The external dimensions are as shown in Figure 1θ<90cm x 180c+a
(3 shaku x 6 shaku) and the outer circumference is made of wood (1') as shown in Figure 13.
) 20m+11x41FII+ square timbers to secure the structure and seal the inside. Furthermore, FIG. 12 shows an example of construction in which the heat-insulating sound-insulating mat according to the present invention shown in FIG. It is a sectional view showing a loaded example. The heat-insulating and sound-insulating mat consisted of a sandwich structure of 60z×9QaR and a pleat extending 15α above and below the mat, and three sheets were joined one above the other and loaded over the entire surface of the hollow layer. Therefore, the mat loaded in the middle row is upside down from the mats in the upper and lower rows (see Figure 85), and the folds are...

The sound insulation sheet 1 laminated on each soft sheet surface 2 of the upper and lower mats is made of the same material as Comparative Example 1. .1
m, areal density 4. xky/i), soft sheet 2
is a soft vinyl chloride sheet (thickness 0.4 m, areal density 0.
6 kg/ba) is used. Further, in both the comparative example and the usage example of the mat of the present application, the soft sound insulating sheet or the soft sheet and the plywood were joined using tape on both sides.

First, in order to compare the durability against condensation of the two,
Both the panels according to Comparative Example 1 and the present example were arranged as partition walls of two constant temperature and humidity chambers a and b, and the surface temperature of each panel was measured. The temperature and humidity conditions of the constant temperature and humidity room are a: 5℃, 604R
,l(,,b were kept constant at 30"C18°tlAR,H,.

The results of the measurements are shown in Table 1 below.

As shown in Table 1, in Comparative Example 1, moisture permeation occurred slightly from the periphery of the panel, and dew condensed in the glass wool.
It can be seen that the insulation performance is significantly reduced. However, in the present example, it was seen that moisture permeated from the periphery of the panel, but no condensation occurred in the insulation material.
It can be seen that the insulation performance is maintained. Therefore, in this example, even after long-term use, no condensation occurs in the insulation material, and there is no need to take any new measures against moisture permeability and condensation.However, this advantage is limited to this construction example. If the mat of the present invention is used, it can be applied to a very wide range, and similar effects can be expected.

In addition, the sound insulation performance of both panels was evaluated according to J I 5-A-1416.
Measurements were made in a reverberation chamber according to .

In addition, as Comparative Example 2, the same soft sound insulation sheet as the example of the present application (
Santam ■ 5-10, areal density 4.1 h/m')
.

Using a heat-insulating sound-absorbing board (glass wool: 48K) and a soft sheet (made of vinyl chloride, thickness 1.1, surface density o, 6H/d), we created a sandwich structure of GOc+xX60cm and each pleat of 60clIL on the top and bottom. A heat-insulating and sound-insulating mat (Sb/5a-o, '33) is provided, and as in the case of the present application, three sheets are placed on the top and bottom, and as shown in FIG. Both sheets were joined using double-sided tape, and the sound insulation performance was similarly measured based on JIS-A-1416.

These +1ill constant results are shown in FIG.

As shown in this figure, in Comparative Example 1, large sound insulation defects occur in both the low frequency range around 200 Hz and the high frequency range around 4KH1. In addition, in Comparative Example 2, the sound transmission loss is improved overall compared to Comparative Example 1, but similar to Comparative Example 1, a large sound insulation loss is seen around 200R2, and even around 4K] iZ. Defects are visible. On the other hand, according to this example, since the face material portion (Sb/5a = 0.67) is substantially non-uniform due to the pleats, the sound insulation loss frequencies are dispersed, The sound transmission loss is improved by more than 5dB,
The shielding performance has been significantly improved. This improvement effect significantly improves the sound insulation grade from about D-25 (comparative example) to D-30 or higher (according to the present example), and substantially eliminates the sound insulation deficiency that is important for sound insulation. It has extremely important meaning.

[Brief explanation of the drawing]

Figures 1 to 4 are plan views showing examples of the heat-insulating and sound-insulating mats according to the present invention, and Figures 5 to 9 are sectional views showing how these mats are used adjacent to other members. is,
Figure 1 shows the sound transmission loss (
dll) and the 1/3 octave center frequency (Hl)... Soft sound insulation sheet, 2...
・Soft sheet, 3...insulating sound absorbing material, 4...plywood,
5...Wooden square lumber. Patent applicant Zeon Corporation Figure 2 Figure 08 Figure 4. w Blade' Rei13Figure 11114Figure Frequency () [Z)

Claims (1)

[Scope of Claims] L A structure in which a soft sound insulating sheet, a heat insulating sound absorbing material, and a soft sheet are laminated, wherein the heat insulating sound absorbing material is hermetically filled and sandwiched between the soft sound insulating sheet and the soft sheet. and the projected area of the soft sound insulating sheet in the thickness direction of the structure is 8
a.Similarly, when the projected area of the heat insulating and sound absorbing material is sb, and the projected area of the soft sheet is SC, the following relationship is satisfied: (1) Sa≧Sc > 5b (2) 0.9 Sa b Sb≧0.45Sa , a heat-insulating and sound-insulating mat, characterized in that the projected shape in the thickness direction of the filled portion of the heat-insulating and sound-absorbing material is a flat filling shape;