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KR-20260065583-A - INTERFLOOR NOISE INSULATION

KR20260065583AKR 20260065583 AKR20260065583 AKR 20260065583AKR-20260065583-A

Abstract

An embodiment provides an interlayer sound insulation material comprising: a first sound-absorbing member having a first storage modulus; a support member disposed on the first sound-absorbing member and having a flexural strength higher than that of the first sound-absorbing member; and a second sound-absorbing member disposed on the support member and having a second storage modulus different from the first storage modulus.

Inventors

  • 조희진
  • 문갑수

Assignees

  • 피유코어 주식회사

Dates

Publication Date
20260508
Application Date
20251031
Priority Date
20241101

Claims (16)

  1. A sound-absorbing member having a storage modulus of 0.08 MPa to 0.18 MPa at 1 Hz and 25℃; and An interlayer sound insulation material comprising a support member disposed on the sound-absorbing member and in direct contact with the sound-absorbing member.
  2. A first sound-absorbing part having a first storage modulus; A support member disposed on the first sound-absorbing member and having a higher bending strength than the first sound-absorbing member; and An interlayer sound insulation material comprising a second sound-absorbing member disposed on the above-mentioned support member and having a second storage modulus different from the first storage modulus.
  3. In Article 2, The above support A plurality of column sections inserted into the first sound-absorbing section; and An interlayer sound insulation material comprising a connecting portion that connects the above-mentioned column portions to each other.
  4. In claim 2, the above-mentioned column part A cavity that is an empty space inside; and It includes an outer wall portion surrounding the outer periphery of the above cavity, and A portion of the second sound-absorbing part is an interlayer sound insulation material disposed within the cavity.
  5. In claim 3, the above-mentioned column part A cavity that is an empty space inside; and It includes an outer wall portion surrounding the outer periphery of the above cavity, and A portion of the first sound-absorbing part is an interlayer sound insulation material that is in direct contact with the outer wall.
  6. A first sound-absorbing member having a first loss modulus; and An interlayer sound insulation material comprising: a second sound-absorbing member disposed on the first sound-absorbing member and having a second loss modulus different from the first loss modulus.
  7. In claim 6, a first sound-absorbing layer composed of the first sound-absorbing part; A second sound-absorbing layer disposed on the first sound-absorbing layer and composed of the second sound-absorbing part; and An interlayer sound insulation material comprising an intermediate layer disposed between the first sound-absorbing layer and the second sound-absorbing layer, and including the first sound-absorbing portion and the second sound-absorbing portion.
  8. In claim 6, an interlayer sound insulation material comprising a plurality of pocket portions that are empty spaces between the first sound-absorbing portion and the second sound-absorbing portion.
  9. In claim 8, the interlayer sound insulation material comprises a separating portion between the first sound-absorbing portion and the second sound-absorbing portion, wherein the pocket portions are formed within the separating portion.
  10. In claim 9, an interlayer sound insulation material having a volume of 1 ml to 100 ml for each pocket portion.
  11. In claim 6, the first sound-absorbing part First sound-absorbing layer; and An interlayer sound insulation material comprising a first protrusion protruding upward from the first sound-absorbing layer.
  12. In claim 11, the second sound-absorbing part A second sound-absorbing layer disposed on the first sound-absorbing layer; and An interlayer sound insulation material comprising a second protrusion protruding downward from the second sound-absorbing layer.
  13. In claim 12, the first protrusion and the second protrusion are arranged to alternately interlock with each other in a horizontal direction between the first sound-absorbing layer and the second sound-absorbing layer, forming an interlayer sound insulation material.
  14. In Article 6, The first loss modulus is measured at 1 Hz and 25°C and is 0.03 MPa to 0.09 MPa, and The first sound-absorbing part has a third loss modulus measured at 5 Hz and 25℃, and The first sound-absorbing part has a fifth loss modulus measured at 10 Hz and 25℃, and The third loss modulus is 0.001 MPa to 0.04 MPa larger than the first loss modulus, and The above fifth loss modulus is an interlayer sound insulation material that is 0.001 MPa to 0.03 MPa larger than the above third loss modulus.
  15. In claim 14, the second loss modulus is measured at 1 Hz and 25°C and is 0.005 MPa to 0.02 MPa, and An interlayer sound insulation material in which the first loss modulus is 0.001 MPa to 0.1 MPa larger than the second loss modulus.
  16. In claim 15, the second sound-absorbing member has a fourth loss modulus measured at 5 Hz and 25°C, The second sound-absorbing part has a sixth loss modulus measured at 10 Hz and 25℃, The fourth loss modulus is 0.001 MPa to 0.01 MPa smaller than the second loss modulus, and The above 6th loss modulus is an interlayer sound insulation material that is 0.001 MPa to 0.01 MPa smaller than the above 4th loss modulus.

Description

Interfloor Noise Insulation The embodiment relates to an interlayer sound insulation material. Along with changes in housing conditions, securing housing performance to protect users (residents) is emerging as a major issue both domestically and internationally. In particular, Japan enacted the "Quality Assurance Promotion Act" in 2000 and is encouraging rational housing supply and consumption based on consumer choice by publicly disclosing quality during the housing supply process. Domestically, an objective housing quality labeling system has also been introduced to induce overall quality and performance improvements in multi-unit housing, thereby meeting the public's demand for improved housing quality and enhancing individual asset values. This not only contributes to the sound development of the housing industry at the national level but also promotes the advancement of housing construction technology and the housing industry, enabling the public to select housing while knowing its quality and performance in advance. The current industry is conducting various research and development efforts to address the issue of floor impact noise, which is emerging as a major factor degrading the residential environment of multi-unit housing, in order to construct multi-unit housing that complies with regulations. In particular, the development of various soundproofing materials equipped with both thermal insulation and impact noise reduction functions for floor slabs is actively underway. As a few examples regarding sound insulation materials, Korean Registered Patent No. 166993 discloses a floor construction method in which a rubber material mixed with an adhesive substance is laid on a slab, a polyethylene foam sponge is laminated on top of it to form a barrier layer, and then a flooring material is formed on the foam sponge. Additionally, Korean Published Patent No. 2006-38862 discloses a thermoplastic foam having a foaming ratio of 5 to 200 times and foam cells of a specific diameter, which can be used as a sound insulation material for inter-floor noise in buildings. All of the aforementioned prior art technologies utilize resin foam as a component for reducing inter-floor noise. Such resin foam has long been installed for purposes such as thermal insulation or cushioning, and examples include foams made of polyethylene, polystyrene, or polyvinyl chloride. However, while such conventional foams achieve a certain degree of thermal insulation or shock cushioning, their effectiveness in absorbing, dispersing, and dissipating floor impact sound—a major cause of inter-floor noise—has not been satisfactory. Meanwhile, Korean Public Patent No. 2008-0027177 was developed to improve the above-mentioned problems and relates to an interlayer sound insulation material comprising an open-cell containing resin foam having an open-cell ratio of 20% or more (including 60% or more and 80% or more) and a dynamic elastic modulus of 0.5 to 10 MN/㎥, which is said to be effective in absorbing and dissipating noise and vibration caused by impact. FIG. 1 is a perspective view illustrating an interlayer sound insulation material according to an embodiment. Figure 2 is a cross-sectional view showing a cross section cut along A-A' in Figure 1. FIG. 3 is a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 4 is a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 5 is a drawing showing a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 6 is a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 7 is a drawing showing a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 8 is a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 9 is a drawing showing a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 10 is a drawing showing a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 11 is a drawing showing a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 12 is a drawing showing a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 13 is a drawing showing a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 14 is a perspective view illustrating an interlayer sound insulation material according to another embodiment. FIG. 15 is a perspective view illustrating the support member. FIG. 16 is a cross-sectional view showing a cross section cut along B-B' in FIG. 14. FIG. 17 is a drawing showing a cross-section of an interlayer sound insulation material according to another embodiment. FIG. 18 is a drawing showing a cross-section of an interlayer sound insulation material