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KR-102963464-B1 - SOUND INSULATION TO ABSORB NOISE BETWEEN FLOORS OF BUILDINGS

KR102963464B1KR 102963464 B1KR102963464 B1KR 102963464B1KR-102963464-B1

Abstract

The present invention relates to a sound insulation material for reducing inter-floor vibration and noise installed on a concrete slab, wherein the sound insulation material has a structure having a plurality of protrusions on a substrate, has a Shore hardness of 50 to 80, and the substrate portion is made of a material comprising 30 to 70 weight% of elastomer rubber and 70 to 30 weight% of recycled material, each protrusion is spaced apart from each other and has a concentric double cylinder shape of an inner circular cylinder and an outer circular cylinder, is made of an elastomer rubber material, the spacing between the protrusions is in the range of 10 to 15 mm, the outer diameter of the outer circular cylinder is in the range of 20 to 50 mm, the thickness (i.e., the difference between the outer diameter and the inner diameter) is 1 to 3 mm, and the height is 15 to 35 mm, and the outer diameter of the inner circular cylinder is in the range of 10 to 30 mm, the thickness is 1 to 3 mm, and the height is 10 to 20 mm.

Inventors

  • 정낙일
  • 노향순

Dates

Publication Date
20260511
Application Date
20240412

Claims (8)

  1. As a sound insulation material for reducing inter-floor noise in buildings installed on a concrete slab, The above sound insulation material is, A first plastic mesh having a thickness of 1 to 3 mm, and A soundproofing substrate laminated on top of the first plastic mesh and having a thickness of 16 to 19 mm, and A second plastic mesh having a thickness of 1 to 3 mm and laminated on the upper part of the soundproofing substrate, and It includes a foam pad having a thickness of 8 to 10 mm that is laminated on top of the second plastic mesh net, and The above soundproofing substrate is, It is formed of a material comprising 3 to 5% by weight of urethane and 95 to 97% by weight of recycled material, and reduces inter-floor noise by naturally curing without pressure between the first plastic mesh and the second plastic mesh to form an air layer inside. Soundproofing material.
  2. In Article 1, The above recycled material is, Sound insulation material consisting of waste tire buffing chips produced during waste tire recycling or coconut shells crushed to a length of 10 to 15 mm.
  3. In Article 1, The above foam pad is, Sound insulation material that is PE or PP foam.
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Description

Sound insulation material for absorbing noise between floors of buildings The present invention relates to a sound insulation material for inter-floor noise in buildings, and more specifically, to a sound insulation material for buildings with excellent sound insulation performance while significantly reducing production costs through the use of recycled materials by mixing buffing chips, which are recycled materials generated during waste tire recycling, with urethane and forming a sound insulation substrate for reducing inter-floor noise, and then forming a plastic mesh net on the upper and lower surfaces of the sound insulation substrate so that the shape of the sound insulation substrate is not deformed before hardening, and by naturally hardening the sound insulation substrate without pressure to form a plurality of air layers within the sound insulation substrate. In multi-story buildings, such as multi-story buildings, apartments, schools, hospitals, and dormitories, it is common practice to install soundproofing materials on walls and floors to block vibrations and noise. Since impacts from upper floors, particularly the noise and vibrations generated by such impacts, cause significant discomfort to residents on lower floors, the installation of soundproofing materials to block impact noise is considered essential in the floor construction between levels of a building. Floor construction between floors has generally been carried out by laminating a board made of resin foam, non-woven fabric, or a mixture of woven fabric, non-woven fabric, and synthetic resin on top of a concrete slab floor of a building, then pouring and curing foamed concrete that serves as thermal insulation and soundproofing between floors, installing piping such as underfloor heating pipes, and applying finishing concrete. However, sound insulation materials in the form of resin foam or non-woven fabric according to conventional technology have poor durability, and concrete layers cannot absorb much impact vibration due to their fine structure and high strength, and transmit it to the lower plates between layers, so as a result, they cannot sufficiently prevent impact and vibration. As a solution to this problem, for example, Korean Patent No. 10-0729871 (registered on June 12, 2007) provides a sound insulation material for floors of a building that can minimize the transmission of noise and impact sound to the lower floor by laminating two styrofoams of different specific gravities, forming a circular sound insulation groove on the joint surface where the two styrofoams are laminated, and providing a cushioning sound insulation structure on the bottom surface. In addition, Korean Patent No. 10-0922009 (registered on October 8, 2009) discloses a sound insulation material and a method of installing the same, characterized by having a plurality of conical groove sound insulation parts provided on the upper surface of a substrate composed of materials such as ethylene vinyl acetate (EVA), polyethylene (PE), or rubber. Korean Patent Publication No. 10-2011-0051952 (published on May 18, 2011) discloses a method for manufacturing a heat-pressed plate-shaped sound insulation material, and the method includes the step of forming fine grooves in the soft thermoplastic resin sheet by embossing a low-density polyethylene material with a thickness of 20 to 60 μm and a melting point of 120 to 160°C with an embossing roller having embossing irregularities, then sequentially laminating an outer nonwoven fabric thereon, and then heat-press molding the molding target body and cooling it to obtain a plate-shaped sound insulation material. Korean Patent Publication No. 10-2014-0030513 (published March 12, 2014) also discloses a technical configuration intended to prevent the transmission of impact sound by utilizing an uneven surface and a blocking section provided at the bottom of a sound insulation material. Meanwhile, Korean Patent No. 10-1833475 (registered on February 22, 2018) discloses a soundproofing material comprising a substrate composed of a high-density elastic body, a first soundproofing part composed of a plurality of curved protrusions extending from the top to the bottom outside the substrate, a second soundproofing part composed of a plurality of curved protrusions cut to a certain length between the plurality of first soundproofing parts, a plurality of curved space parts provided on the sides of the first and second soundproofing parts, and a straight space part, a flow path. In addition, Korean Patent No. 10-2553972 (registered on July 6, 2023) discloses a sound insulation material comprising upper and lower plates in which sound insulation members are assembled in a continuous manner and placed on top of each other in a finely wrinkled shape with continuous ridges and grooves formed in positive and negative shapes, and an intermediate plate between them. Korean Patent No. 10-2571170 (registered on August 22, 2023) discloses a