KR101054557B1 - Interlayer Noise Material - Google Patents

Interlayer Noise Material Download PDF

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KR101054557B1
KR101054557B1 KR1020080126425A KR20080126425A KR101054557B1 KR 101054557 B1 KR101054557 B1 KR 101054557B1 KR 1020080126425 A KR1020080126425 A KR 1020080126425A KR 20080126425 A KR20080126425 A KR 20080126425A KR 101054557 B1 KR101054557 B1 KR 101054557B1
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South Korea
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urethane foam
foam sheet
sheet
density
interlayer noise
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KR1020080126425A
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Korean (ko)
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KR20100067848A (en
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권회현
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(주)대한솔루션
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00Flooring
    • E04F15/18Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E04F15/203Separately-laid layers for sound insulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/40Layered products comprising a layer of synthetic resin comprising polyurethanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/10Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/72Density
    • B32B2307/722Non-uniform density
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/726Permeability to liquids, absorption
    • B32B2307/7265Non-permeable
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/041Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise

Abstract

본 발명은 층간소음제거 및 방진효과가 우수하고 층간단열기능도 가지는 새로운 구조의 층간소음재에 대한 것이다.The present invention relates to an interlayer noise absorbing material having a novel structure having excellent interlayer noise removing and dustproofing effects and also having an interlayer insulating function.
본 발명에 따르면, 제1우레탄폼시트(10)와, 상기 제1우레탄폼시트(10)의 상면에 적층된 매스층(20)과, 상기 매스층(20)의 상면에 적층되며 상기 제1우레탄폼시트(10) 보다 상대적으로 작은 밀도를 가지는 제2우레탄폼시트(30)와, 상기 제2우레탄폼시트(30)의 상면에 적층된 방수시트(40)를 포함하여 이루어진 것을 특징으로 하는 층간소음재가 제공된다.According to the present invention, the first urethane foam sheet 10, the mass layer 20 laminated on the upper surface of the first urethane foam sheet 10, and the first surface of the mass layer 20 are laminated on the first surface. It characterized in that it comprises a second urethane foam sheet 30 having a relatively smaller density than the urethane foam sheet 10, and a waterproof sheet 40 laminated on the upper surface of the second urethane foam sheet 30 An interlayer noise material is provided.
층간소음재, 우레탄폼시트, 매스층, 밀도, 방수층 Interlayer noise material, urethane foam sheet, mass layer, density, waterproof layer

Description

층간소음재{Soundproof Structure of between floors in building}Soundproof Structure of between floors in building}
본 발명은 층간소음재에 관한 것으로서, 보다 상세하게는 층간소음제거 및 방진효과가 우수하고 층간단열기능도 가지는 새로운 구조의 층간소음재에 관한 것이다.The present invention relates to an interlayer noise absorbing material, and more particularly, to an interlayer sound absorbing material having a novel structure having excellent interlayer noise removing and dustproofing effects and having an interlayer insulating function.
생활수준의 향상과 더불어 안락하고 쾌적한 생활환경을 영위하고자 하는 욕구가 증대되고 있으며, 이에 따라 생활주변에서 발생되는 소음에 대한 민감도도 상승되고 있는 추세이다. 특히 아파트 등과 같은 공동주거공간에서는 건축물의 외부에서 발생되는 소음은 물론이며, 상하 층간에서 발생되는 소음에 대해서도 민감한 반응을 보이는 경우가 많다.In addition to the improvement of living standards, the desire to maintain a comfortable and comfortable living environment is increasing, and accordingly, the sensitivity to the noise generated around the living is also increasing. In particular, common residential spaces such as apartments often have a sensitive response to the noise generated from the outside of the building and the noise generated between the upper and lower floors.
이와 같은 층간소음을 줄이고자 다양한 종류의 층간소음재가 제공되고 있으나, 건축물의 층간에서 발생되는 진동 및 소음을 효과적으로 제거하지 못하고 있는 실정이다. In order to reduce such noise between floors, various kinds of noise between floors are provided. However, the situation does not effectively remove vibrations and noises generated between floors of buildings.
한편, 종래에는 슬라브 바닥에 시공된 난방파이프에서 발생하는 열의 일부가 하층으로 전달되는 등 불필요하게 에너지가 낭비되는 문제점도 있다.On the other hand, conventionally there is a problem that unnecessary energy is wasted, such as a part of the heat generated from the heating pipe installed on the floor of the slab is transferred to the lower layer.
본 발명은 상기의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 층간소음제거 및 방진기능이 우수하여, 건축물의 슬라브에 시공하면 쾌적한 주거환경을 조성할 수 있으며, 층간 단열기능도 우수하여 건축물의 냉난방효율도 상승되어 에너지 절감효과도 얻을 수 있는 새로운 구조의 층간소음재를 제공하고자 하는 것이다.The present invention is to solve the above problems, the object of the present invention is to excellent noise removal and dustproof function between the floor, when constructing on the slab of the building to create a comfortable living environment, excellent insulation between floors of the building The aim is to provide a new layered noise absorbing material that can increase energy savings and heating efficiency.
본 발명에 따르면, 제1우레탄폼시트(10)와, 상기 제1우레탄폼시트(10)의 상면에 적층된 매스층(20)과, 상기 매스층(20)의 상면에 적층되며 상기 제1우레탄폼시트(10) 보다 상대적으로 작은 밀도를 가지는 제2우레탄폼시트(30)와, 상기 제2우레탄폼시트(30)의 상면에 적층된 방수시트(40)를 포함하여 이루어진 것을 특징으로 하는 층간소음재가 제공된다. According to the present invention, the first urethane foam sheet 10, the mass layer 20 laminated on the upper surface of the first urethane foam sheet 10, and the first surface of the mass layer 20 are laminated on the first surface. It characterized in that it comprises a second urethane foam sheet 30 having a relatively smaller density than the urethane foam sheet 10, and a waterproof sheet 40 laminated on the upper surface of the second urethane foam sheet 30 An interlayer noise material is provided.
본 발명의 다른 특징에 따르면, 상기 제1우레탄폼시트(10)에는 황마섬유시트 (12)가 삽입된 것을 특징으로 하는 층간소음재가 제공된다. According to another feature of the invention, the first urethane foam sheet 10 is provided with an interlayer noise material, characterized in that jute fiber sheet 12 is inserted.
본 발명의 또 다른 특징에 따르면, 상기 제1우레탄폼시트(10)의 다수개의 오목홈(14)이 형성되어, 상기 오목홈(14)에 의해 상기 제1우레탄폼시트(10)는 저면의 75~85%만 슬라브바닥(1)에 접촉되는 것을 특징으로 하는 층간소음재가 제공된다.According to another feature of the present invention, a plurality of recessed grooves 14 of the first urethane foam sheet 10 is formed, the first urethane foam sheet 10 by the recessed grooves 14 of the bottom surface An interlayer sound absorbing material is provided, characterized in that only 75 to 85% is in contact with the slab bottom (1).
본 발명의 또 다른 특징에 따르면, 상기 제1우레탄폼시트(10)는 밀도가 140~180kg/㎥이고, 제2폴리우레탄폼시트(30)는 밀도가 20~30kg/㎥인 것을 특징으로 하는 층간소음재가 제공된다. According to another feature of the invention, the first urethane foam sheet 10 has a density of 140 ~ 180kg / ㎥, the second polyurethane foam sheet 30 is characterized in that the density of 20 ~ 30kg / ㎥ An interlayer noise material is provided.
이상과 같은 구성을 가지는 본 발명은 서로 다른 물성을 가지는 복수개의 시트가 적층되어 층간에서 발생되는 소음과 진동을 저감시킨다. 특히, 제1우레탄폼시트(10)에 황마섬유시트(12)가 삽입되어, 음파의 전달저항인 임피던스 값이 증가되어 바닥충격음 차단성능이 우수하다. 또한, 제1우레탄폼시트(10) 바닥면에 오목홈(14)을 형성하여 층간소음재가 시공되는 슬라브바닥(1)과 층간소음재의 접촉면적을 조절함으로써, 충격음 차단성능이 향상된다. The present invention having the configuration as described above is laminated with a plurality of sheets having different physical properties to reduce the noise and vibration generated between the layers. In particular, the jute fiber sheet 12 is inserted into the first urethane foam sheet 10, and the impedance value, which is the transfer resistance of the sound waves, is increased, so that the floor shock sound blocking performance is excellent. In addition, by forming a concave groove 14 in the bottom surface of the first urethane foam sheet 10 to adjust the contact area between the slab bottom (1) and the interlayer noise absorbing material is constructed, the impact sound blocking performance is improved.
또한, 밀도가 낮은 제2우레탄폼시트(30)가 다소 두껍게 구성되어, 이 제2우레탄폼시트(30)가 스프링요소로 작용함으로써, 층간 충격에 의한 진동도 효과적으로 흡수되며, 이 제2우레탄폼시트(30)에 의해 층간의 단열기능도 가지므로 층간의 열전달이 차단되며, 이에 따라 에너지 절감효과도 기대된다. In addition, the second urethane foam sheet 30 having a low density is formed to be somewhat thick, and the second urethane foam sheet 30 acts as a spring element, thereby effectively absorbing vibration caused by an interlayer impact. Since the sheet 30 also has a thermal insulation function between the layers, heat transfer between the layers is blocked, and thus energy saving effect is also expected.
이하에서 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다. 도 1은 본 발명의 일 실시예를 보인 사시도이고, 도 2는 그 단면도이다. 본 발명은 도시된 바와 같이, 슬라브바닥면(1)에 시공되는 것으로서, 제1우레탄폼시트(10)와, 상기 제1우레탄폼시트(10)의 상면에 적층된 매스층(20)과, 상기 매스층(20)의 상면에 적층되며 상기 제1우레탄폼시트(10) 보다 상대적으로 작은 밀도를 가지는 제2우레탄폼시트(30)와, 상기 제2우레탄폼시트(30)의 상면에 적층된 방수시트(40)로 이루어진다. Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view showing an embodiment of the present invention, Figure 2 is a cross-sectional view thereof. As shown in the present invention, the first urethane foam sheet 10, the mass layer 20 laminated on the upper surface of the first urethane foam sheet 10, which is installed on the slab bottom surface 1, The second urethane foam sheet 30 is laminated on the upper surface of the mass layer 20 and has a density relatively smaller than that of the first urethane foam sheet 10, and the upper surface of the second urethane foam sheet 30 is laminated. It is made of a waterproof sheet 40.
상기 제1우레탄폼시트(10)는 차음과 더불어 충격에 의한 진동 발생을 억제하는 기능을 한다. 이러한 제1우레탄폼시트(10)는 상대적으로 고밀도를 가진다. 이러한 제1우레탄폼시트(10)의 상면에는 매스층(20)이 부착되는데, 이 매스층(20)은 고중량의 EVA 컴파운드로 성형된다. 이 매스층(20) 역시 상기 제1우레탄폼시트(10)와 더불어 층간소음재의 중량요소로 작용하여 충격에 때한 진동발생 억제와 차음기능을 한다. The first urethane foam sheet 10 functions to suppress the occurrence of vibration due to impact as well as sound insulation. This first urethane foam sheet 10 has a relatively high density. The mass layer 20 is attached to the upper surface of the first urethane foam sheet 10, and the mass layer 20 is formed of a high weight EVA compound. The mass layer 20 also acts as a weight element of the interlayer noise absorbing material together with the first urethane foam sheet 10, thereby suppressing vibration occurrence and sound insulation.
상기 제2우레탄폼시트(30)는 상기 제1우레탄폼시트(10)에 비해 상대적으로 저밀도를 가진다. 이러한 제2우레탄폼시트(30)는 흡음과 더불어 진동흡수기능을 하며, 단열기능도 한다. 바람직하게는 상기 제1우레탄폼시트(20)는 밀도가 140~180kg/㎥ 정도이고, 제2우레탄폼시트(30)는 밀도가 20~30kg/㎥인 것이 바람직하다. 이러한 제2우레탄폼시트(30)의 상면에는 방수시트(40)가 적층된다. 바람직하게는 방수시트(40)는 EVA필름으로 이루어진다. 이 방수시트(40)에 의해 층간소음재에 방수기능이 부여된다. The second urethane foam sheet 30 has a relatively low density compared to the first urethane foam sheet 10. The second urethane foam sheet 30 has a sound absorbing and vibration absorbing function as well as a heat insulating function. Preferably, the first urethane foam sheet 20 has a density of about 140 to 180 kg / m 3, and the second urethane foam sheet 30 preferably has a density of 20 to 30 kg / m 3. The waterproof sheet 40 is laminated on the upper surface of the second urethane foam sheet 30. Preferably, the waterproof sheet 40 is made of an EVA film. The waterproof sheet 40 is provided with a waterproof function to the interlayer sound absorbing material.
이러한 구성을 가지는 본 발명은 제1우레탄폼시트(10)에 매스층(20)을 먼저, 부착시키고, 매스층(20)이 부착된 제1우레탄폼시트(10)와 제2우레탄폼시트(20) 및 방수시트(40)를 라미네이팅하여 제조되는데, 상기 각 부재들 사이에 접착제를 도포 또는 살포하여 각 부재들을 접착시킨다. According to the present invention having such a configuration, the mass layer 20 is first attached to the first urethane foam sheet 10, and the first urethane foam sheet 10 and the second urethane foam sheet to which the mass layer 20 is attached ( 20) and the waterproof sheet 40 is laminated, by applying or spraying an adhesive between the respective members to adhere each member.
한편, 바람직하게는 상기 제1우레탄폼시트(10)의 저면에는 오목홈(14)이 소정형태로 배열 형성된다. 이 오목홈(14)에 의해 층간소음재의 완충력이 상승되어 충격음 차단성능이 향상된다. 후술하는 실시예를 통해 알 수 있는 바와 같이, 이 오목홈(14)의 크기와 개수에 따라 층간소음재가 슬라브바닥에 접촉되는 면적이 달라지고 층간소음재의 완충력이 달라져서 충격음 차단성능이 변화되므로 오목홈의 크기와 개수를 조절할 필요가 있다. On the other hand, preferably the concave groove 14 is formed in a predetermined form on the bottom surface of the first urethane foam sheet 10. The concave grooves 14 increase the buffering force of the interlayer noise absorbing material, thereby improving the impact sound blocking performance. As can be seen through the embodiment to be described later, according to the size and number of the concave groove 14, the area where the interlayer noise material is in contact with the slab floor and the buffering force of the interlayer noise material is changed, so that the impact sound blocking performance is changed, the recess groove You need to adjust the size and number of.
또, 바람직하게는 상기 제1우레탄폼시트(10)에는 황마섬유시트(12)가 삽입된다. 바람직하게는 금형내부에 상기 매스층(20)을 깔고 그 위에 황마섬유시트(12)를 적층시킨 다음, 우레탄원액을 주입하고 발포하여 제1우레탄폼시트(10)를 만든다. 이와 같이 하면, 내부에 황마섬유시트(12)가 삽입되고, 상면에 매스층(20)이 부착된 제1우레탄폼시트(10)가 얻어진다. In addition, preferably, the jute fiber sheet 12 is inserted into the first urethane foam sheet 10. Preferably, the mass layer 20 is laid in the mold, and the jute fiber sheet 12 is laminated thereon, and then the urethane stock solution is injected and foamed to form the first urethane foam sheet 10. In this way, the jute fiber sheet 12 is inserted inside, and the first urethane foam sheet 10 having the mass layer 20 attached to the upper surface is obtained.
이와 같이 제1우레탄폼시트(10)에 황마시트(12)가 삽입되면 음파의 전달저항인 임피던스 값이 커지게 되어 충격음의 차단성능이 향상된다. 황마섬유시트(12)의 면밀도(kg/㎡, 단위면적당 섬유의 무게)가 높을수록 음파의 전달저항인 임피던스 값이 커져서 충격음 차단성능이 향상되며, 황마섬유시트(12)의 면밀도가 동일한 경우에는 황마섬유시트(12)를 형성하는 황마원사가 가늘수록 황마섬유시트(12)의 표면적이 증가되어 임피던스값이 증가되고 충격음 차단성능이 상승된다. 경우에 따라 서는 황마섬유(12)를 절단하여 제1우레탄폼시트(10)에 혼입할 수도 있다. As such, when the jute sheet 12 is inserted into the first urethane foam sheet 10, the impedance value, which is the transfer resistance of the sound wave, is increased, thereby improving the blocking performance of the impact sound. When the surface density of the jute fiber sheet 12 (kg / ㎡, the weight of the fiber per unit area) is higher, the impedance value, which is the transfer resistance of sound waves, increases, so that the impact sound blocking performance is improved, and the surface density of the jute fiber sheet 12 is the same. As the jute yarn forming the jute fiber sheet 12 is thinner, the surface area of the jute fiber sheet 12 is increased so that the impedance value is increased and the impact sound blocking performance is increased. In some cases, the jute fiber 12 may be cut and mixed into the first urethane foam sheet 10.
실시예 1Example 1
두께가 10mm이고 밀도가 150kg/㎥인 제1우레탄폼시트와, EVA컴파운드로 이루어지며 두께 1mm, 밀도 2000kg/㎥인 매스층과, 두께가 19mm, 밀도가 20kg/㎥인 제2우레탄폼시트와, 두께가 1mm인 EVA필름으로 이루어진 방수시트를 적층시켜 층간소음재를 만들었다. 이와 같이 하여 제조된 층간소음재의 충격음 차단성능을 측정하였다. 그리고 비교치로 PE폼시트, PET시트, EVA폼시트가 적층되어 이루어진 기존 층간소음재의 충격음 차단성능을 측정하였다. A first urethane foam sheet having a thickness of 10 mm and a density of 150 kg / m 3, an EVA compound, a mass layer having a thickness of 1 mm and a density of 2000 kg / m 3, a second urethane foam sheet having a thickness of 19 mm and a density of 20 kg / m 3; , Laminated waterproof sheet made of EVA film having a thickness of 1mm to make the interlayer noise material. In this way, the impact sound blocking performance of the interlayer noise produced was measured. As a comparison value, the impact sound blocking performance of the existing interlayer noise absorbing material formed by laminating PE foam sheet, PET sheet, and EVA foam sheet was measured.
그 결과는 도 5의 그래프와 같은데, 이를 통해 기존의 층간소음재보다 본 발명에 의한 층간소음재가 우수한 충격력 차단성능을 가짐을 알 수 있다. The results are shown in the graph of Figure 5, through which it can be seen that the interlayer noise material according to the present invention has an excellent impact force blocking performance than the existing interlayer noise material.
실시예 2Example 2
두께가 10mm, 밀도가 150kg/㎥이며, 저면에 사각형태의 오목홈이 전후좌우로 배열형성된 제1우레탄폼시트와, EVA컴파운드로 이루어지며 두께 1mm, 밀도 2000 kg/㎥인 매스층과, 두께가 19mm, 밀도 20kg/㎥인 제2우레탄폼시트와, 두께가 1mm인 EVA필름으로 이루어진 방수시트를 적층시켜 층간소음재를 만들되, 제1우레탄폼시트의 오목홈의 크기를 달리하여 3종의 층간소음재를 만들었다. 이때 제1우레탄폼시트 저면의 60%, 75%, 85% 만이 슬라브바닥면과 접촉되도록 오목홈의 크기와 개수를 조절하였다. 그리고 각 층간소음재의 충격력 전달성능을 테스트하였으며, 그 값을 실 시예1의 오목홈이 형성되지 않은 층간소음재(슬라브바닥과의 접촉면적이 100%)의 충격력 차단성능과 비교하였다. 그 결과는 도 6의 그래프와 같다. A first urethane foam sheet having a thickness of 10 mm and a density of 150 kg / m 3, and having a rectangular recessed groove arranged in front, rear, left, and right sides, EVA compound, and a mass layer having a thickness of 1 mm and a density of 2000 kg / m 3; The second urethane foam sheet having a thickness of 19 mm and a density of 20 kg / m3 and a waterproof sheet made of an EVA film having a thickness of 1 mm to make an interlayer sound absorbing material. Interlayer noise material was made. At this time, the size and number of recessed grooves were adjusted so that only 60%, 75%, and 85% of the bottom surfaces of the first urethane foam sheet contacted the slab bottom surface. And the impact force transmission performance of each interlayer noise material was tested, and the value was compared with the impact force blocking performance of the interlayer noise material (contact area with slab bottom 100%) without concave groove of Example 1. The results are shown in the graph of FIG.
도 6을 살펴보면, 제1우레탄폼시트의 저면에 오목홈이 형성되어 제1우레탄폼시트의 저면이 슬라브바닥에 100% 접촉되지 않는 경우가 제1우레탄폼저면에 오목홈이 형성되지 않아 제1우레탄폼저면이 슬라브바닥에 100% 접촉되는 경우에 비해 충격력 차단성능이 우수함을 알 수 있다. 더욱이 오목홈이 형성된 경우에도 제1우레탄폼시트의 저면 면적의 75% 만이 슬라브바닥에 접촉되는 경우에 가장 우수한 충격력 차단성능을 가지며, 제1우레탄폼시트의 저면 면적의 85% 만이 슬라브바닥에 접촉되는 경우에 상당한 수준의 충격력 차단성능을 가짐을 알 수 있다. Referring to FIG. 6, a recess is formed in the bottom of the first urethane foam sheet so that the bottom surface of the first urethane foam sheet is not 100% in contact with the slab bottom. It can be seen that the impact blocking performance is superior to that when the bottom of the urethane foam is in contact with the slab bottom 100%. Moreover, even when the recessed groove is formed, only 75% of the bottom surface area of the first urethane foam sheet contacts the slab bottom, and the impact resistance is excellent. Only 85% of the bottom area of the first urethane foam sheet contacts the slab bottom. It can be seen that there is a significant level of impact force blocking performance.
실시예 3 Example 3
두께가 10mm이고 저면에 오목홈이 형성된 제1우레탄폼시트와, EVA컴파운드로 이루어지며 두께 1mm, 밀도 2000kg/㎥인 매스층과, 두께 19mm 밀도 20kg/㎥인 제2우레탄폼시트와, 두께가 1mm인 EVA필름으로 이루어진 방수시트를 적층시켜 층간소음재를 만들되, 제1우레탄폼시트의 밀도를 각각 100, 140, 150, 180kg/㎥로 다르게 하여 4종의 층간소음재를 만들었다. 이때 제1우레탄폼시트 저면의 75%만 슬라브바닥과 접촉되도록 상기 오목홈의 크기와 개수를 조절하였다. 이들 층간소음재의 충격력 차단성능을 테스트하였는데, 그 결과는 도 7의 그래프와 같다. A first urethane foam sheet having a thickness of 10 mm and a recessed groove formed on the bottom, an EVA compound, a mass layer having a thickness of 1 mm and a density of 2000 kg / m3, a second urethane foam sheet having a thickness of 19 mm and a density of 20 kg / m3 and a thickness of Laminated waterproof sheet made of EVA film of 1mm to make an interlayer noise material, four kinds of interlayer noise material was made by varying the density of the first urethane foam sheet to 100, 140, 150, 180kg / ㎥ respectively. At this time, the size and number of the concave grooves were adjusted so that only 75% of the bottom surface of the first urethane foam sheet was in contact with the slab bottom. The impact force blocking performance of these interlayer noise materials was tested, and the results are shown in the graph of FIG.
도 7을 살펴보면, 제1우레탄폼시트의 밀도가 높을수록 충격력 전달성능이 우수함을 알 수 있다. 그러나 제1우레탄폼시트의 밀도가 180kg/㎥, 200kg/㎥인 경우 에는 밀도가 150kg/㎥인 경우에 비해 오히려 충격력 차단성능이 낮았다. 이를 통해 제1우레탄폼시트의 밀도가 180kg/㎥를 초과하는 경우에는 제1우레탄폼시트의 밀도가 높아질수록 충격력 차단성능이 급격히 감소됨을 알 수 있다. 또한, 제1우레탄폼시트의 밀도가 100kg/㎥인 경우에는 종래의 층간소음재(실시예1의 도 1 참조)와 유사한 수준의 충격력 차단성능을 보였다. 따라서 제1우레탄폼시트의 밀도가 과도하게 높거나 낮은 경우에는 충격력 차단성능이 저하되므로 본 발명에서는 제1우레탄폼시트의 밀도를 140~180kg/㎥으로 한정한다. Looking at Figure 7, it can be seen that the higher the density of the first urethane foam sheet, the better the impact force transmission performance. However, when the density of the first urethane foam sheet is 180kg / ㎥, 200kg / ㎥ compared to the case where the density is 150kg / ㎥, the impact resistance was lower. Through this, when the density of the first urethane foam sheet exceeds 180kg / ㎥ can be seen that the impact force blocking performance is sharply reduced as the density of the first urethane foam sheet increases. In addition, when the density of the first urethane foam sheet is 100kg / ㎥ showed a shock force blocking performance similar to the conventional interlayer noise absorbing material (see Figure 1 of Example 1). Therefore, when the density of the first urethane foam sheet is excessively high or low, the impact force blocking performance is lowered, so in the present invention, the density of the first urethane foam sheet is limited to 140 to 180 kg / m 3.
실시예 4Example 4
두께가 10mm이고 저면에 오목홈이 형성되며 내부에는 황마시트가 삽입된 제1우레탄폼시트와, EVA컴파운드로 이루어지며 두께 1mm, 밀도 2000kg/㎥인 매스층과, 두께 19mm, 밀도 20kg/㎥인 제2우레탄폼시트와, 두께가 1mm인 EVA필름으로 이루어진방수시트를 적층시켜 다수개의 층간소음재를 제조하였다. 제1우레탄폼시트의 75%만 슬라브바닥에 접촉되도록 오목홈의 크기와 개수를 조절하였다. 이러한 층간소음재의 충격력 차단성능을 테스트하고 그 값을 실시예2의 동일 조건을 갖는 층간소음재이 충격력 차단성능과 비교하였다. 그 결과는 도 8과 같다. It is 10mm thick, and a recess is formed in the bottom surface, and the inside is made of a first urethane foam sheet having jute sheets inserted therein, and an EVA compound. A second urethane foam sheet and a waterproof sheet made of an EVA film having a thickness of 1 mm were laminated to prepare a plurality of interlayer sound absorbing materials. The size and number of concave grooves were adjusted so that only 75% of the first urethane foam sheet was in contact with the slab bottom. The impact force blocking performance of the interlayer noise absorber was tested, and the value was compared with the impact force blocking performance of the layer noise absorbent having the same conditions as in Example 2. The result is shown in FIG. 8.
이러한 실험결과, 황마시트가 삽입된 층간소음재가 황마시트가 삽입되지 않은 것에 비해 충격력의 차단성능이 우수함을 알 수 있다. As a result of this experiment, it can be seen that the interlayer noise material in which the jute sheet is inserted is superior in the impact performance of the impact force as compared to the case in which the jute sheet is not inserted.
이상의 실시예에서 본 발명의 바닥충격력 차단성능을 테스트하였는데, 바닥 전달충격력이 클수록 발생되는 소음도 크기 때문에, 결국 충격력이 차단되어 층간에 전달되는 충격력이 감소된다는 것은 결국, 층간소음도 감소된다는 것이다. 따라서 본 발명에 의한 층간소음재는 충격력 차단성능, 즉, 층간소음에 대한 흡차음효과가 우수하다. In the above embodiment, the floor impact force blocking performance of the present invention was tested. As the floor impact impact force is higher, the noise generated is larger, so that the impact force is cut off and the impact force transmitted between the layers is reduced, so that the interlayer noise is also reduced. Therefore, the interlayer noise absorber according to the present invention is excellent in impact force blocking performance, that is, the sound absorbing and insulating effect on the interlayer noise.
도 1은 본 발명의 일 실시예를 보인 사시도1 is a perspective view showing an embodiment of the present invention
도 2는 상기 실시예의 단면도2 is a cross-sectional view of the embodiment
도 3은 본 발명의 다른 실시예를 보인 단면도Figure 3 is a cross-sectional view showing another embodiment of the present invention
도 4는 본 발명의 또 다른 실시예를 보인 단면도 Figure 4 is a cross-sectional view showing another embodiment of the present invention
도 5 내지 도 8은 본 발명의 각 실시예에 따른 층간소음재의 충격력 차단성능을 나타낸 그래프5 to 8 is a graph showing the impact force blocking performance of the interlayer sound absorbing material according to each embodiment of the present invention

Claims (4)

  1. 삭제delete
  2. 제1우레탄폼시트(10)와, 상기 제1우레탄폼시트(10)의 상면에 적층된 매스층(20)과, 상기 매스층(20)의 상면에 적층되며 상기 제1우레탄폼시트(10) 보다 상대적으로 작은 밀도를 가지는 제2우레탄폼시트(30)와, 상기 제2우레탄폼시트(30)의 상면에 적층된 방수시트(40)를 포함하고, 상기 제1우레탄폼시트(10)에는 황마섬유시트 (12)가 삽입된 것을 특징으로 하는 층간소음재.The first urethane foam sheet 10, the mass layer 20 laminated on the upper surface of the first urethane foam sheet 10, and the first urethane foam sheet 10 laminated on the upper surface of the mass layer 20. The second urethane foam sheet 30 having a relatively smaller density than) and the waterproof sheet 40 laminated on the upper surface of the second urethane foam sheet 30, the first urethane foam sheet 10 The interlayer noise material, characterized in that the jute fiber sheet 12 is inserted.
  3. 삭제delete
  4. 삭제delete
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KR20150146291A (en) 2014-06-23 2015-12-31 주식회사 한국융합에코기술 Noise insulation between floor using nanomaterial for concrete floor construction of architecture
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KR20200041155A (en) 2018-10-11 2020-04-21 주식회사 한국융합에코기술 Interlayer noise prevention structure for remodeling
KR20200079705A (en) 2018-12-26 2020-07-06 주식회사 한국융합에코기술 Eco-friendly interlayer noise prevention structure

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