JPS63151756A - Constraint type vibration-damping floor member for direct sticking - 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 damping floor member, and particularly to a damping floor member for direct connection. In recent years, technological progress regarding this type of vibration-damping floor components has been remarkable, and the remaining issues in the architectural field are:
It is said that the current situation is narrowing down to two points: condensation and sound/vibration. In recent years, various countermeasures have been taken to address the problem of sound and vibration, and although improvements have been made, there are still many areas where sufficient effects have not been achieved, partly due to technical difficulties. Flooring materials are an example of this, and although various studies have been conducted, there is currently no material that exhibits good performance. In other words, among flooring materials, residents prefer wooden flooring because of its advantages such as being able to maintain cleanliness, being difficult for pests such as mold and mites to inhabit, and having a subdued color tone. is increasing. However, the only disadvantage of wood flooring is that it cannot at all reduce floor impact noise due to the sound of walking on the floor or the sound of objects falling, and considering the continuous windows of people living downstairs, wood flooring cannot be used upstairs. The current situation is that there is no such thing. Against this background, the inventors of the present invention conducted extensive research into flooring materials with excellent floor impact noise mitigation performance, and as a result, very good results were obtained as shown in Japanese Patent Application No. 61-93466, etc. After conducting further improvement tests, we discovered a method that could make even greater improvements, and completed the present invention.

The uninvented vibration damping floor member utilizes the vibration damping properties of an air layer, a crosslinked viscoelastic material with excellent damping properties and compression properties, and also uses a fibrous base fabric and/or a foam sheet. be.

As is conventionally known, it is known that floor impact noise can be easily alleviated by using a material that can be compressed and deformed easily even under small stress, such as felt. . On the other hand, materials with such performance are
Because the compressive deformation is too large, if a floor material that requires a smooth finish, such as a wooden floor, is used, distortion will occur even at the height of furniture, etc., which is a fatal drawback, and smoothness cannot be maintained. It happens. Therefore, floor impact noise countermeasures that are currently being implemented are made by combining several types of compressed glass wool, asbestos, centimeter board, rubber boards, inorganic boards, plywood, etc., or by floating the combinations of these materials above the floor slabs. In addition, sound-absorbing material is placed in the space between the floor slab and ceiling, and in some cases, the ceiling is made of vibration-proof rubber to create a suspended ceiling, thereby taking measures to reduce floor impact noise through the combined effect of the floor and ceiling. The current situation is that

However, the method requires a large number of raw materials and high raw material costs. There is a lot of material loss during construction.

The cost increases due to the large number of construction steps.

In addition, the total thickness of floor members for alleviating floor impact noise becomes extremely thick, and if buildings are kept at the same eave height, the living space must be narrower or the number of floors must be reduced. On the other hand, if the same number of floors and living space are maintained, the disadvantage is that the increase in eave height will add to the construction cost of the building.

The inventors of the present invention have solved the above-mentioned drawbacks, and have developed a method that can reduce floor impact noise at low cost, can be directly connected to long and thin combs, and can also reduce floor impact noise even when finished with wood flooring. After repeated trial and error with the goal of creating a bonded restraint type vibration damping floor member, we developed a liquid rubber that can be reacted at room temperature to form a crosslinked viscoelastic material, a base material with closed cells, a fibrous base fabric, and/or As a result of various tests, the present invention was completed based on the knowledge that when used in combination with a foam sheet, it not only exhibits the ability to further reduce floor impact noise, but also eliminates the drawbacks when used alone. I came to the conclusion.

In other words, when liquid rubber is used alone to obtain a crosslinked viscoelastic body through room-temperature reaction, it is expensive and unsuitable for general-purpose flooring, and when reacted between plate-shaped restraining materials, However, unless a large amount of material is used and a method is used to extrude the excess material, large cavities are likely to be created randomly, resulting in product variations. In addition, if a plate-shaped body is made in advance and pasted, the thickness accuracy will be insufficient unless it is a standard size, and since it is a cross-linked viscoelastic body, blocking etc. will easily occur, and the pasting process will be difficult. This method has the disadvantage that the number of man-hours required for alignment processing is extremely large, resulting in high costs. On the other hand, when using a base material with closed cells alone, if there is no material to protect the film that forms the closed cells, the film will break if pressure is applied locally, and it may become a part of the flooring material. It has the disadvantage that it is not a material that can be used in layered form. Furthermore, among film base materials, those covered with a thin film not only on one side but also on both sides have a slightly higher load capacity than single-sided film products, but are not materials that can be used in a layered manner as flooring materials. or,
Plastic cardboard with enclosed air is also known, but those with increased surface film thickness and overall rigidity buckle under unexpectedly small stress when a compressive load is applied, and it is said that they do not recover. Not only does it have fatal drawbacks as a flooring material, but it also has poor floor impact noise mitigation performance.

In order to eliminate the above drawbacks, if a polyolefin foam sheet is pasted on one or both sides, the floor impact noise mitigation performance will be improved, but if a plastic cardboard with enclosed air is used or not. There is no difference between the two cases, and even during compression, if the deformation limit of the polyolefin foam sheet is exceeded, there is a drawback that it buckles and does not recover as in the case where the polyolefin foam sheet is not laminated.

After repeated trial and error in order to solve both of the above drawbacks, the present inventors filled the spaces other than the convex parts of the closed cell with a liquid rubber that can be reacted at room temperature to form a crosslinked viscoelastic body, and further We have found that by using a base fabric and a foam sheet in combination, it is possible to obtain a floor material with excellent floor impact sound mitigation performance and very good compression properties as a floor material.

In other words, the reason for the excellent floor impact sound mitigation performance is that the air-filled portion becomes an air bag and is easily compressed and deformed, and the viscoelastic material filled in the spaces other than the convex portions adheres closely to the irregularities of the closed cell-containing base material. , the displacement at the time of impact is restrained by a complex shape, and in addition to the impact energy absorption performance of the viscoelastic body itself, the deformation of the convex part that forms the air bag and the sliding deformation part with the crosslinked viscoelastic body are increased. It is thought that the impact energy absorption performance is increased, and the impact energy absorption performance is further increased by laminating the fibrous base fabric or foam sheet.

It is also believed that by combining many materials, the difference in natural frequencies could be effectively utilized.

In addition, in terms of compression properties, when an impact is applied, the fibrous base fabric, foam sheet, and air bag that is a convex part are compressed, and by compressing the viscoelastic material even more, it can be Although it deforms easily, when it is compressed under a certain load or more, the reaction force of the compressed air in the convex air bag and the compression reaction force of the crosslinked viscoelastic body act, and in order to increase the deformation, it is necessary to It is possible to avoid displacement more than necessary due to the need for force. Furthermore, when the compressive load is removed, the restoring force of the cross-linked viscoelastic body and the restoring force of the compressed convex air bladders are combined, resulting in a very quick recovery force. It was done.

Furthermore, even though it is a cross-linked substance, cross-linked viscoelastic bodies tend to be easily affected by changes in hardness due to temperature changes, but at high temperatures, air expansion can suppress the decrease in compressive force due to the decrease in hardness of the viscoelastic body. On the other hand, at low temperatures, the shrinkage of air can suppress the increase in compressive strength due to increased hardness of the viscoelastic body, and it also has the advantage of being a vibration damping floor member in that it reduces changes in performance due to temperature changes.

In terms of cost, at least one side is made of film or other non-blocking material, which makes handling work very easy, and it also has the advantage of being able to process long lengths, which greatly reduces the number of man-hours. Not only become;
Since the convex air sealing part does not require any material, it is possible to reduce the amount of material, which is suitable for cost reduction.

It also has excellent heat insulation performance because it is made of laminated materials with low thermal conductivity.

Next, the cross-sectional configuration of a floor using the restraint-type damping floor member for direct attachment of the present invention will be described.

As shown in Figures 1 to 4, a sheet base material containing a closed cell with a crosslinked viscoelastic body and a fibrous base material or foam sheet laminated (constrained) on one or both sides of the base material are further made into a relatively rigid board. A method of using a shaped body as a restraining material, and Figures 5 to 6
As shown in the figure, either a relatively rigid plate-like body or a floor slab may be used as the restraining material.

Further, two types of fibrous base materials or foam sheets to be bound and bonded to one or both sides of the closed cell-containing sheet base material with crosslinked viscoelastic body may be used on one side, or the same type may be used on both sides.

Next, the floor components will be explained step by step.

Examples of finishing materials include wood floor finishing materials, vinyl chloride floor finishing materials, and cork tiles, which are currently used as floor finishing materials.

Wooden flooring materials include flooring boards, flooring blocks, single-layer flooring made of mosaic barkerato, natural wood decorative composite flooring, specially processed decorative composite flooring, natural wood decorative composite blocks, composite flooring made of specially processed decorative composite blocks, and sawn wood flooring. Examples include flooring made of boards, boards, cork, and laminated layers. It is preferable to have a thin board layer in order to reduce floor impact noise.Specific examples of the restraining material include the above-mentioned wooden flooring materials, plywood, compressed paper, plastic boards, thin metal sheets, Particle board, wood chip cement board, fiber board, pulp cement board, wood wool cement board, flexible board, soft flexible board, large flat board, asbestos cement board,
Asbestos-cement perlite boards, asbestos-cement calcium silicate boards, plaster boards, etc. can be used as long as they are in the form of a board, regardless of whether or not the surface has decorative finishing or holes. If the goal is to reduce the total thickness, a thin plate is desirable. Further, as a foam sheet, polyethylene, polypropylene, urethane, ethylene-vinyl acetate,
It may also be a sheet made of a rubber sponge made of vinyl chloride, vinylidene chloride, or a chloropolyethylene propylene multi-component copolymer, or a pulverized product of the above-mentioned foam. Specific examples of cloth-like base materials include nonwoven fabrics using nylon, polyester, polypropylene, polyethylene, and glass fibers, natural fibers such as cotton and hemp, and/or synthetic fibers such as nylon, urethane, polypropylene, acrylic, and polyester. Cloth can be used as an example, but when using fibers, it is desirable to use something as long and as thin as possible in order to reduce compression distortion. That is, although it may be used in a compressed state in terms of compressive strain, the total thickness when laminated with a closed cell-containing sheet base material with a crosslinked viscoelastic material and used is 3 to 1.
It is desirable to use it between 0 mm.

Next, the crosslinked viscoelastic material will be explained.

The crosslinked viscoelastic substance referred to in the present invention is liquid at room temperature,
In addition, the cured product after reacting at room temperature retains its shape even when heated to 80°C, and has a hardness of 50 or less on the C-type hardness tester shown in Japan Rubber Association standard SRIS-0101 at 20°C. It satisfies the conditions.

Furthermore, as a matter of course, the curing speed of substances that react at room temperature can be further increased by heating, and this property may be utilized to improve production efficiency by heating.

Examples of reactive substances that can satisfy the above conditions include combinations of a liquid rubber having a functional group shown in Table 1 and a crosslinking agent.

Considering the ease of controlling curing rate, cost, and availability of room-temperature reactivity, these materials have a hydroxyl group at the end and a main chain consisting of polybutadiene, hydrogenated polybutadiene, and polybutadiene. -Nitrile, polybutadiene-styrene, isoprene, etc., polyether polyols, polyester polyols, urethane acrylic polyols, aniline derivative polyols, etc. are preferably used alone or in combination. Further, as the curing agent for the reactive substance, an isocyanate-based curing agent is suitable, and it is necessary that each molecule has two or more isocyanate groups.

Table 1 Functional groups of liquid rubber Functional groups of crosslinking agent -011-NGO Metal oxide, -OH, -NCO -S11)10-N =e0=N-
OH, metal oxide, -NGO, peroxide-NR, polyvalent halogen compound (-Br)-NCO-OH
, -NHz, -NHR, -COOH, -5H-Rr
-NRg+ -NHR+ -NH2+ Metal oxide -5C-OR-Nib Specific examples thereof include toluylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and prepolymers having terminal isocyanate groups; Alternatively, they can be used in combination. Also, isocyanate curing agents can be used in combination with plasticizers due to problems such as blending ratio and/or viscosity, but the plasticizers must be dehydrated and do not react with isocyanate compounds. It is.

Although it is possible to obtain a crosslinked viscoelastic material that satisfies the present invention by combining only the essential components required to cause the room-temperature reaction described above, various additives may be added in order to improve cost, workability, and physical properties. By adding , a wide variety of stable crosslinked viscoelastic materials can be obtained.

Additives include plasticizers, fillers, bituminous substances, tackifying resins, anti-aging agents, anti-mold agents, flame retardants, catalysts, surfactants,
Coupling agents and the like can be mentioned.

The plasticizer is blended for the purpose of adjusting viscosity, adjusting workability, adjusting the substance of the crosslinked viscoelastic body, imparting flame retardance, and the like.

Specific examples of plasticizers include naphthenic oil, paraffinic oil, amarotic oil, castor oil, cottonseed oil, pine oil, tall oil, phthalic acid derivatives, isophthalic acid derivatives, adipic acid derivatives, areic acid derivatives, and functional groups of liquid rubber. There are some that do not contain , and they can be used alone or in combination. When flame retardancy is required, halogen compound-based or phosphorus compound-based plasticizers can be used alone or in combination. Examples of the bituminous material include straight asphalt, blown asphalt, and tar, which may be modified in advance with a tackifying resin, plasticizer, etc. in order to obtain a desired crosslinked viscoelastic material.

Tackifying resins include natural resins, rosins, modified rosins, derivatives of rosins and modified rosins, polyterpene resins, modified terpenes, aliphatic hydrocarbon resins, cyclopentadiene resins, aromatic petroleum resins, and phenolic resins. ,
Alkylphenol-acetylene resins, xylene resins, coumaron-indene resins, vinyltoluene-α-methylstyrene copolymers, and the like can be used alone or in combination.

Fillers are effective in improving vibration damping properties, sound insulation properties, and flame retardancy, and are used to adjust the blending ratio of the main ingredient/curing agent, adjust viscosity, and reduce compounding costs. and those commonly used in paint-related applications can be used.

Specific examples include mica, graphite, vermiculite,
Scale-like inorganic powders such as talc and clay, ferrite, metal powders, barium sulfate, high specific gravity fillers such as lithopone, calcium carbonate, finely divided silica, carbon, magnesium carbonate,
General-purpose fillers such as aluminum hydroxide and asbestos can be used alone or in combination. Moreover, antimony trioxide, borax, etc. can also be used for the purpose of flame retardation.

Other additives include anti-aging agents, catalysts, pigments, surfactants, coupling agents, anti-mold agents, etc.
These can be added as necessary.

Next, the closed cell-equipped base material will be explained.

The closed cell base material is 0.005cc or more per piece.
A countless number of closed cell cells each having a volume of 10 cc are connected at regular or irregular intervals via a film, thread, foam sheet, plate, sheet, adhesive, adhesive, etc. Specific examples are shown in FIGS. 7 and 8.

The materials of the closed cell bag include polyethylene, polyethylene, ethylene-vinyl acetate copolymer, vinyl chloride,
Rubbers such as vinylidene chloride, nylon, polyester, butyl rubber, natural rubber, chloroprene, etc. may be used alone or in layers, or may be layered with nonwoven fabric or paper. The thickness of the cross section is preferably 6 mm or less, and a more preferable range is 2 to 41 mm.

The shape of the convex portion of the closed cell may be cylindrical, prismatic, spherical, hemispherical, elliptical, etc., as long as a closed cell is formed.

When a sheet base material containing a closed cell with a crosslinked viscoelastic body is used, the ratio of the volume of the crosslinked viscoelastic body to the volume of the air portion of the closed cell is preferably 2=8 to 8:2. Volume of crosslinked viscoelastic body: Volume of air portion of closed cell = 2 = 8 If the volume of the crosslinked viscoelastic body becomes smaller, the cost of raw materials will decrease, but the risk of destruction of the air bag will increase and the recovery performance will decrease. The disadvantage is that it gets worse. On the other hand, if the volume of the crosslinked viscoelastic body increases from the ratio of the volume of the crosslinked viscoelastic body to the volume of the air portion of the closed cell body = 8:2, the cost of raw materials increases and the restorability tends to deteriorate.

Next, the part that is attached to the floor slab is called the uneven absorbent material.
To explain the materials of the uneven absorbent material, the materials include polyethylene, polystyrene, polypropylene, vinyl chloride, ethylene-vinyl acetate copolymer, chloroprene,
Rubber foam base materials such as ethylene propylene copolymer and natural rubber, and fibrous base materials made of urethane, acrylic, nylon, polyester, polypropylene, polyethylene, glass fiber, rock wool, cotton, linen, etc. I can do it. These materials can be used alone or in combination.

Further, the foam base material may be slitted at appropriate intervals and depths, or may be attached in the form of small plates at appropriate intervals.

Next, as for how to join flooring materials together, if you create a real part around the flooring material and make a real joint, you can maintain smoothness after construction.

Next, the present invention will be explained with reference to Examples and Comparative Examples.

These are summarized in Table ■2 Table ■.

Next, examples and comparative examples of the present invention will be described.

The examples and comparative examples shown in Table ■ were prepared according to the formulation example shown in the table, and the base material and curing agent were mixed in the ratio shown in the table, the space in the closed cell substrate was filled, and the mixture was heated at room temperature. hardened. On the other hand, hardness, 80°C shape retention, and room temperature reactivity were checked using the following methods.

(1) Hardness: After creating a base resin based on the formulation shown in Table ■, weighing out the amounts of curing agent and base resin shown in Table ■ and mixing them,
It was poured into a 121m x 50mm x 50mm mold that had been subjected to mold release treatment, allowed to react at room temperature, and cured for 7 days at room temperature and 7 days at 50°C.
The hardness was measured using a C-type hardness meter specified in .

(2) Shape retention at 80°C = After demolding the material obtained by the method shown in (1), applying release paper to the upper and lower surfaces, and leaving it at 80°C for 24 hours under a load of 50 g. The sample was unloaded, left to stand at room temperature, and visually determined based on the degree of deformation after 4 hours.

Mark ○ if the edges are sharp and there is almost no deformation.
Those with no sharp edges or those with large deformation were marked with an X.

(3) Room temperature reactivity: Pour the mixture of the base agent and curing agent in (1) into a 100 cc cup, let it stand at room temperature, and after 1 day, if the entire cup has gelled or hardened, O Marked as a mark, and the rest marked as an X.

Next, examples and comparative examples regarding the floor configurations shown in Table (1) will be described.

The crosslinked viscoelastic body used in the Examples and Comparative Examples was Example 1 shown in Table 1, and in the Examples, 2, and Comparative Examples, the closed cell volume was 0.3 cc, and the crosslinked viscoelastic body and closed cell A closed cell-containing sheet with a crosslinked viscoelastic material was prepared using a closed cell-arranged base material having a volume ratio of 5:5. In Example 3, the crosslinked viscoelastic body was the same as in other Examples, 2, and Comparative Example 1, the volume of the closed cell was 3 cc, and the volume ratio of the crosslinked viscoelastic body to the closed cell was 4:6. A closed cell-containing sheet with a crosslinked viscoelastic material was prepared using a closed cell-equipped base material.

In addition, the floor impact sound level was determined according to JIS-1 by the method shown in Figure 9.
It was conducted based on A-1418. Restorability was determined using the configurations shown in the examples and comparative examples, with a point load of 1 kg/cm" and 3 k
After applying a load at 5 kg/cm'' and 5 kg/cm'' for 20 days, the load was removed and the amount of displacement was measured 3 days later. If the amount of displacement after 3 days is within 0.2 layer type, mark ○, 0
．． Those with 2 dragons or more are marked with an X. Floor surface material breaking strength is 1
cm" steel jig directly on the floor, 2us/min
The load at which cracking of the surface material occurred was measured.

Table ■ Note: Manufactured by ARCO, product name: Po1y bd R-4
5HT Note 2. Manufactured by Dai-Kogyo Seiyaku Co., Ltd. Product name Poly Hardener 〇-350 Note 3. Manufactured by Idemitsu Kosan Product name Diana Process Oil ^H-16 Note 4. Manufactured by Tokyo Jushi Kogyo Co., Ltd. Product name: U-Rex 80
EF Note 5. Manufactured by Yasuyu Kogyo Co., Ltd. Product name: ys resin #Note 6
．． Manufactured by Nippon Kagaku Sangyo ■Product name: 28χ Tin Octylate Note 7. Manufactured by Dai-Kogyo Seiyaku ■ Product name Polyflex M
H Table■ Note: The symbols in the floor configuration cross-sectional diagram are as follows.

A Surface decorative wood flooring 5.5tB Fiber f base material 2. Closed cell-containing sheet base material with OtC crosslinked viscoelastic body 4. Ot D Plywood 3. Ot E Unconventional absorbent material 2. Ot F Floor slab 150t G Foam sheet 2. Ot H grooved uneven absorbent material 10. The examples and comparative examples shown in Table 1 are examples of crosslinked viscoelastic bodies used in the present invention. Table 3 shows that Examples 1 and 2 are formulation examples that can achieve the object of the present invention, but Comparative Example 1 has a hardness that is outside the claimed range, indicating that the sound insulation performance is not sufficient.

The examples and comparative examples shown in Table 1 are examples showing cross-sectional views of the floor structure of the present invention. In Example 1, a fibrous base material was attached to one side of a closed cell-containing sheet base material with a crosslinked viscoelastic body, and a restraining layer was further attached to the upper and lower surfaces, and the foam sheet was used as a non-contact absorbent material. This indicates that the floor impact sound level is good, and the restorability as a floor material and the breaking strength of the floor surface material are also good.

Example 2 is a case where a foam sheet is laminated on the lower constraining layer side of the crosslinked viscoelastic closed cell-containing sheet base material used in Example 1. The floor impact sound level was also good, indicating that the restorability as a floor material and the breaking strength of the floor surface material were also good.

In Example 3, foam sheets were laminated on both sides of a closed cell-containing sheet base material with a crosslinked viscoelastic body, and constraining layers were provided on the top and bottom,
This shows the case where grooves are provided in the uneven absorbing material. The floor impact sound level was further improved, indicating that the restorability of the floor material and the breaking strength of the floor surface material were also good.

Comparative Example 1 showed a case in which neither a fibrous base material nor a foam sheet was provided above and below a closed cell-containing sheet base material with a crosslinked viscoelastic body.

Although the floor impact sound level in Comparative Example 1 is not bad, it can be seen that it can be greatly improved by implementing the example. .

As mentioned above (by utilizing the present invention,
It was possible to further improve the method shown in No.-93466, and to obtain a flooring material that does not lose its functionality as a flooring material.

In other words, the floor impact sound level, which has traditionally been said to be extremely difficult to achieve with wood-finished flooring materials, has been made possible by keeping the total thickness of the flooring material to 2511 or less.
It has good resilience as a flooring material, and the breaking strength of the surface material can be kept to the same level as conventional wood flooring, and it can meet many requests in that it can be lived on without causing damage to people on the floor below.

For the above reasons, the industrial utility value of the present invention is very high.

[Brief explanation of the drawing]

FIG. 1 shows a construction cross-sectional view of one embodiment of the present invention, in which a fibrous base fabric is provided on one side of a sheet base material containing a closed cell with a crosslinked viscoelastic body, and a fibrous base fabric is further provided on the surface as an upper restraining layer. A decorative wood board is used, plywood is used as the lower restraining layer, an uneven absorbing material is provided between the lower restraining layer and the slab, and a real part suitable for joining the flooring materials is provided. FIG. 2 shows a construction cross-sectional view of one embodiment of the present invention, in which a foam sheet is provided on one side of a sheet base material containing a closed cell with a crosslinked viscoelastic body, and a surface decoration is further provided as an upper restraining layer. A wooden board is used, plywood is used as the lower restraining layer, grooves are provided in the uneven absorbing material, and a real part is provided that is suitable for joining the flooring materials together. FIG. 3 shows a construction cross-sectional view of one embodiment of the present invention, in which a fibrous base fabric is provided on both sides of a sheet base material containing a closed cell with a crosslinked viscoelastic body, and furthermore, constraining layers are placed on the top and bottom. This is an example used. FIG. 4 shows a construction cross-sectional view of an embodiment of the present invention, in which a fibrous base fabric and a foam sheet are laminated on one side of a sheet base material containing a closed cell with a crosslinked viscoelastic body, and This is an example of using layers one above the other. FIG. 5 shows a construction sectional view of an embodiment of the present invention, in which a fibrous base fabric and a foam sheet are laminated on both sides of a sheet base material containing a closed cell with a crosslinked viscoelastic body, and an upper restraining layer is formed. This is an example in which the surface decorative wood board is used and the lower restraining layer is a floor slab. FIG. 6 shows a construction sectional view of one embodiment of the present invention, in which a fibrous base material and a foam sheet are laminated on one side of a sheet base material containing a closed cell with a crosslinked viscoelastic body, and the other side is laminated with a fibrous base material and a foam sheet. This is an example in which a foam sheet is provided as a restraining layer on one side. FIG. 7 and FIG. 8 are perspective views of a sheet base material containing a closed cell with a crosslinked viscoelastic body. FIG. 9 is an explanatory diagram of an apparatus that measures floor impact sound. 1...Surface decorative wood board 2...Female fruit part 3...
Male fruit part 4...Fibrous base material or foam sheet 5...Closed cell containing sheet base material with crosslinked viscoelastic body 6
...Plywood (lower restraining material) 7...Uneven absorbing material 8...Floor slab 9...
Closed cell body 10...Crosslinked viscoelastic body 11...
Sound source quality 12...Tapping machine 13.
...Sample 14...Floor slab 15...
Sound receiving room 16...Microphone 17...
Precision sound level meter 18... Frequency analyzer 19...
Level coder - Figure 1, Figure 2, Figure 3, Figure 4, Figure 6

Claims (1)

[Claims] 1. The closed cell-arranged base material (A) is 0.00 per piece.
The convex portion made into a closed cell by enclosing 5cc to 10cc of gas is bonded to a film-like material, foam sheet-like material, sheet-like material, cloth-like material, or thread-like material by heat-sealing, adhesive, or thread-like material. It is a base material with a structure in which a countless number of pieces are connected at regular or irregular intervals using forced fixation.The crosslinked viscoelastic material (B) undergoes a curing reaction at room temperature, and the product after the curing reaction is It retains its shape even when heated to 80°C, and its hardness at 20°C meets the Japan Rubber Association standard SRI.
It is a substance that satisfies the three conditions of having a hardness of 50 or less on the C-type hardness tester specified in S-0101, and the fibrous base fabric and/or foam sheet (C) refers to synthetic fibers, natural fibers, inorganic fibers, Fabrics made from metal fibers alone or in combination are called fibrous base fabrics, and include polyethylene,
A single sheet made of foam made of urethane, polypropylene, polystyrene, or various rubbers is called a foam sheet, and a base material made of a pulverized product of the above foam and made into a sheet with a binder and nonwoven fabric is called a foam sheet, with a crosslinked viscoelastic material. The closed cell-containing sheet substrate (D) is a sheet substrate in which the spaces between the closed cells of the closed cell-arranged substrate (A) are filled with a crosslinked viscoelastic material (B), and further contains When the land absorbent material (E) is defined as being composed of a fibrous base fabric and/or a foam sheet or a foam block, ) on one or both sides of the fibrous base fabric and/or foam sheet (C
) are laminated, and a plate-like body is further laminated on one or both sides as a restraining material, and the surface to be adhered to the floor slab side is made into a floor cross-sectional structure, either as it is or with an uneven absorbing material (E) provided. A restraining type vibration damping floor member for direct attachment. 2. Closed cell-containing sheet base material with crosslinked viscoelastic body (D)
A patent characterized in that the ratio of the volume of the crosslinked viscoelastic body (B) to the volume of the closed cell body is 2:8 to 8:2, and the thickness of the convex portion of the closed cell body is 6 mm or less A restraining type vibration damping floor member for direct attachment according to claim 1. 3. Closed cell-containing sheet base material with crosslinked viscoelastic body (D)
When used as a part of a floor component by laminating a fibrous base fabric and/or foam sheet (C) on one or both sides of the floor, the total thickness of C and D is 3 mm to 10 mm. A restraining type vibration damping floor member for direct attachment according to claim 1. 4. Closed cell-equipped base material (A) is 0.00 per piece.
The convex portion made into a closed cell by enclosing 5cc to 10cc of gas is bonded to a film-like material, foam sheet-like material, sheet-like material, cloth-like material, or thread-like material by heat-sealing, adhesive, or thread-like material. It is a base material with a structure in which a countless number of pieces are connected at regular or irregular intervals using forced fixation.The crosslinked viscoelastic material (B) undergoes a curing reaction at room temperature, and the product after the curing reaction is It retains its shape even when heated to 80°C, and its hardness at 20°C meets the Japan Rubber Association standard SRI.
It is a substance that satisfies the three conditions of having a hardness of 50 or less on the C-type hardness tester specified in S-0101, and the fibrous base fabric and/or foam sheet (C) refers to synthetic fibers, natural fibers, inorganic fibers, Fabrics made from metal fibers alone or in combination are called fibrous base fabrics, and include polyethylene,
Urethane, polypropylene, polystyrene, and various rubbers are used as a foam, and a single sheet-like material is used, and a crushed product of the above-mentioned foam is used as a binder, and a nonwoven absorbent material (E) is a fibrous base fabric and/or foam. When defined as consisting of a sheet or a foam block, the closed cell-arranged substrate (A) includes a convex portion and a film-fused portion, which is a cylindrical closed cell consisting of two films. A crosslinked viscoelastic material (B) is formed in the recesses using a base material in which recesses are alternately formed, and a fibrous base fabric (C) made of needle-punched synthetic fibers is laminated on one or both sides of the crosslinked viscoelastic body (B). A restraint for direct application, characterized in that a wooden board material is formed as a restraint layer on one or both sides of the same, and the surface to be adhered to the floor slab side has a floor cross-sectional structure, either as it is or with an uneven absorbing material (E). Type vibration damping floor member.