KR101187109B1 - Finishing Material Of Wall - Google Patents

Finishing Material Of Wall Download PDF

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Publication number
KR101187109B1
KR101187109B1 KR1020090100005A KR20090100005A KR101187109B1 KR 101187109 B1 KR101187109 B1 KR 101187109B1 KR 1020090100005 A KR1020090100005 A KR 1020090100005A KR 20090100005 A KR20090100005 A KR 20090100005A KR 101187109 B1 KR101187109 B1 KR 101187109B1
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South Korea
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interior
sound absorption
finishing material
needle
glass fiber
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KR1020090100005A
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Korean (ko)
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KR20110043066A (en
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전승민
신홍철
한정필
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(주)엘지하우시스
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/07Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0867Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having acoustic absorption means on the visible surface
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/07Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
    • 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

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Building Environments (AREA)
  • Finishing Walls (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)

Abstract

본 발명은 흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽 마감재에 관한 것으로, 보다 상세하게는 인테리어 벽지와 유리섬유 매트가 접합되어 이루어지되, 상기 인테리어 벽지는 타공 처리된 것이고, 상기 유리섬유 매트는 유리섬유를 니들 펀칭(needle punching)하여 얻은 니들 매트인 것을 특징으로 하는 흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽 마감재에 관한 것이다. The present invention relates to a wall finishing material having excellent sound absorption, heat insulation, flame retardancy and interior properties, and more particularly, interior wallpaper and glass fiber mat is bonded, the interior wallpaper is perforated, the glass fiber mat is glass The present invention relates to a wall finishing material having excellent sound absorption, heat insulation, flame retardancy and interior properties, which is a needle mat obtained by needle punching fibers.

본 발명에 따르면, 인테리어 벽지를 타공 처리하고, 이에 높은 기공률을 가진 유리섬유 니들 매트를 결합하여 우수한 흡음성, 단열성, 난연성 및 인테리어성을 갖는 벽 마감재를 제공하는 효과가 있다. According to the present invention, the interior wallpaper is perforated, and combined with the glass fiber needle mat having a high porosity there is an effect to provide a wall finishing material having excellent sound absorption, heat insulation, flame retardancy and interior properties.

타공, 니들 펀칭, 유리섬유, 흡음, 단열성, 난연성, 인테리어성, 벽 마감재 Perforated, Needle Punched, Fiberglass, Sound Absorption, Heat Insulation, Flame Retardant, Interior, Wall Finish

Description

흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽마감재{Finishing Material Of Wall}Finishing material of wall with excellent sound absorption, insulation, flame retardancy and interior

본 발명은 흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽 마감재에 관한 것으로, 보다 상세하게는 인테리어 벽지를 타공 처리하고, 이에 높은 기공률을 가진 유리섬유 니들 매트를 결합하여 우수한 흡음성, 단열성, 난연성 및 인테리어성을 갖는 벽 마감재의 제공에 관한 것이다. The present invention relates to a wall finishing material having excellent sound absorption, heat insulation, flame retardancy and interior properties, and more specifically, perforated interior wallpaper, and combined with a glass fiber needle mat having a high porosity to excellent sound absorption, heat insulation, flame retardancy and interior The present invention relates to the provision of wall finishes having properties.

종래에 벽 마감재로 벽지, 인테리어 층이 구비된 단열재 및 인테리어 층이 구비된 유/무기 흡음재 등이 있다.Conventionally, wall finishing materials include wallpaper, insulation with interior layers, and organic / inorganic sound absorbers with interior layers.

상기 벽지는 현장 재단성, 시공 자유도 및 인테리어성 등은 뛰어나나, 공기층 등이 확보되지 못해 단열성 및 흡음성이 열악하고, 상기 인테리어 층이 구비된 단열재는 단열성 및 난연성은 뛰어나나, 흠음성이 떨어지며, 상기 인테리어 층이 구비된 유기 흡음재는 화재에 취약하고, 인테리어 층에 의해 흡음성이 다소 떨어지는 문제가 있다.The wallpaper has excellent field cutting properties, construction freedom and interior properties, but the insulation and sound absorption are poor because the air layer is not secured, and the insulation material provided with the interior layer is excellent in insulation and flame retardancy, but is less flammable. In addition, the organic sound absorbing material provided with the interior layer is vulnerable to fire, and there is a problem in that the sound absorption is somewhat inferior by the interior layer.

상기 인테리어 층이 구비된 무기 흡음재, 특히 시멘트가 함유된 무기 흡음재는 난연성은 있으나 표면경도가 약해 소재의 가루가 비산되고, 단열성 및 흡음성이 유기 흡음재보다도 떨어지며, 현장 재단 및 시공 자유도가 극히 제한적이다.The inorganic sound absorbing material having the interior layer, particularly the inorganic sound absorbing material containing cement, is flame retardant but the surface hardness is weak, so that the powder of the material is scattered, and the thermal insulation and sound absorption are inferior to the organic sound absorbing material, and the degree of freedom of field cutting and construction is extremely limited.

따라서, 흡음성, 단열성, 난연성 및 인테리어성을 모두 충분히 갖춘 벽 마감재의 개발이 시급한 실정이다. Therefore, it is urgent to develop a wall finishing material having sufficient sound absorption, heat insulation, flame retardancy, and interior properties.

상기와 같은 종래기술의 문제점을 해결하고자, 본 발명은 인테리어 벽지를 타공 처리하고, 이에 높은 기공률을 가진 유리섬유 니들 매트를 결합하여 우수한 흡음성, 단열성, 난연성 및 인테리어성을 갖는 벽 마감재를 제공하는 것을 목적으로 한다. In order to solve the problems of the prior art as described above, the present invention is to provide a wall finishing material having excellent sound absorption, heat insulation, flame retardancy and interior properties by perforating the interior wallpaper, and combined with a glass fiber needle mat having a high porosity. The purpose.

상기의 목적을 달성하기 위하여, 본 발명은 인테리어 벽지와 유리섬유 매트가 접합되어 이루어지되, 상기 인테리어 벽지는 타공 처리된 것이고, 상기 유리섬유 매트는 유리섬유를 니들 펀칭(needle punching)하여 얻은 니들 매트인 것을 특징으로 하는 흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽 마감재를 제공한다. In order to achieve the above object, the present invention is made by bonding the interior wallpaper and glass fiber mat, the interior wallpaper is perforated, the glass fiber mat is a needle mat obtained by needle punching the glass fiber (needle punching) It provides a wall finishing material excellent in sound absorption, heat insulation, flame retardancy and interior properties characterized in that.

이하 본 발명을 상세하게 설명한다. Hereinafter, the present invention will be described in detail.

본 발명의 흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽 마감재는 인테리어 벽지와 유리섬유 매트가 접합되어 이루어지되, 상기 인테리어 벽지는 타공 처리된 것이고, 상기 유리섬유 매트는 유리섬유를 니들 펀칭(needle punching)하여 얻은 니들 매트인 것을 특징으로 한다.Excellent sound absorption, heat insulation, flame retardancy and interior of the present invention is a wall finishing material is made by bonding the interior wallpaper and glass fiber mats, the interior wallpaper is perforated, the glass fiber mat needle punching the glass fiber (needle punching) It is a needle mat obtained by the).

상기 타공 처리는 특별히 제한되지 않으나, 상기 인테리어 벽지와 상기 유리섬유 매트를 점착제로 합지시킨 후 실시되는 것이 바람직하다. The perforation treatment is not particularly limited, but is preferably carried out after laminating the interior wallpaper and the glass fiber mat with an adhesive.

상기 타공은 직경이 1 내지 0.1 mm인 것이 바람직한데, 이 범위 내에서 인테리어 벽지의 다양한 무늬 및 질감을 훼손하지 않으면서, 뛰어난 흠읍성을 갖는다. Preferably, the perforations have a diameter of 1 to 0.1 mm, and have excellent flawability without compromising the various patterns and textures of the interior wallpaper within this range.

상기 니들 매트(needle mat)는 두께가 3 내지 10 mm인 것이 바람직한데, 이 범위 내에서 롤 타입(roll type)으로도 사용이 가능하고, 다루기가 용이하여 우수한 현장 재단성 및 시공 자유도를 갖는다. The needle mat (needle mat) is preferably a thickness of 3 to 10 mm, can be used as a roll type (roll type) within this range, easy to handle has excellent field cutting and construction freedom.

참고로, 상기 타공 및 니들 매트의 두께가 커지면 저 주파수 대역의 흡음에 유리하고, 상기 타공 및 니들 매트의 두께가 작아지면 고 주파수 대역의 흡음에 유리하다. For reference, an increase in the thickness of the perforated and needle mats is advantageous for sound absorption in a low frequency band, and an increase in the thickness of the perforated and needle mats is advantageous in sound absorption in a high frequency band.

상기 벽 마감재는 기능성 벽지 등으로 사용될 수 있다. The wall finish can be used as a functional wallpaper or the like.

참고로, 상기 벽 마감재의 흡음의 주된 원리는 상기 타공 입구에서의 음파에 대한 배플 효과(baffle effect), 타공을 통해 이동하는 음파의 공기 마찰에 의한 1차 열에너지 방사, 높은 기공률의 니들 매트에 의한 음파의 흡수, 및 흡수된 음파의 니들 매트의 다층구조 내에서 공기 마찰에 의한 2차 열에너지 방사 등에 의한다.For reference, the main principle of the sound absorption of the wall finishing material is due to the baffle effect on the sound wave at the inlet of the perforation, the first thermal energy radiation by the air friction of the sound wave moving through the perforation, and the high porosity needle mat Absorption of sound waves, and secondary thermal energy radiation by air friction in a multilayered structure of the absorbent sound absorbing needle mat.

상기 니들 매트 대신에 오픈-셀(open-cell) 구조의 우레탄 폼 또는 멜라민 폼 등의 유기발포소재를 사용하면 흡음성은 향상시킬 수 있으나, 유연성이 부족하여 벽의 코너 등의 시공이 어렵고, 난연성을 구현할 수 없다.The use of an organic foam material such as urethane foam or melamine foam having an open-cell structure in place of the needle mat can improve sound absorption, but it is difficult to construct a corner of a wall due to lack of flexibility and flame retardancy. It cannot be implemented.

상기에서 살펴본 바와 같이, 본 발명에 따르면 인테리어 벽지를 타공 처리하고, 이에 높은 기공률을 가진 유리섬유 니들 매트를 결합하여 우수한 흡음성, 단열성, 난 연성 및 인테리어성을 갖는 벽 마감재를 제공하는 효과가 있다. As described above, according to the present invention, the interior wallpaper is perforated, and the glass fiber needle mat having a high porosity is bonded thereto, thereby providing a wall finishing material having excellent sound absorption, heat insulation, flame retardancy, and interior properties.

이하, 본 발명에 따른 벽마감재의 구체적인 실시예를 첨부된 도면에 의거하여 설명하나, 하기 실시예는 본 발명을 예시하는 것일 뿐, 본 발명의 기술적 범위를 한정하는 것은 아니다.Hereinafter, specific embodiments of the wall finishing material according to the present invention will be described with reference to the accompanying drawings, but the following examples are merely illustrative of the present invention, and are not intended to limit the technical scope of the present invention.

하기 도 1은 본 발명의 벽 마감재를 개략적으로 도시한 사시도인데, 상기 벽 마감재(10)는 인테리어 벽지(11), 니들 매트(13), 상기 인테리어 벽지(11)와 니들 매트(13)를 고정시키는 점착제(14) 및 상기 인테리어 벽지에 형성된 타공(12)으로 구성된다.1 is a perspective view schematically showing a wall finishing material of the present invention, wherein the wall finishing material 10 fixes the interior wallpaper 11, the needle mat 13, the interior wallpaper 11 and the needle mat 13. It consists of a pressure-sensitive adhesive 14 and the perforations 12 formed in the interior wallpaper.

상기 벽 마감제(10)의 구체적인 제조방법은 다음과 같다.Specific manufacturing method of the wall finish 10 is as follows.

긴 유리섬유를 카딩기에 의하여 적정 두께의 웹으로 만든 다음, 이 웹을 니들 펀칭기로 촘촘히 니들 펀칭하여 3 mm 두께의 니들 매트(13)를 얻었고, 이 니들 매트(13)의 일면에 점착제(14)를 도포한 다음, 그 위에 인테리어 벽지(11)를 접착하고 나서, 가압 로울러를 사용하여 가압성형하였다.The long glass fibers were made into webs of proper thickness by a carding machine, and the webs were then needle-punched tightly with a needle puncher to obtain a needle mat 13 having a thickness of 3 mm, and an adhesive (14) was applied to one side of the needle mat 13. ) Was applied, and then the interior wallpaper 11 was adhered thereon, followed by press molding using a pressure roller.

상기 가압 성형된 인테리어 벽지(11) 및 니들 매트(13) 접합체는 마이크로 타공 핀을 장착한 롤 타입(Roll Type)의 펀칭 장치를 이용하여 상기 인테리어 벽지(11) 전면이 타공(12) 입경 0.1 mm 이하가 되도록 타공 처리되어 최종적으로 벽 마감재(10)를 제조하였다.The interior wall 11 and the needle mat 13 of the pressure-molded interior wall are bonded to each other by using a roll type punching device equipped with a micro-perforated pin. Perforated treatment to be below to finally produce a wall finish (10).

상기 실시예에서 제조된 벽 마감재(10)의 흡음성, 단열성 및 난연성을 측정한 결과, 소음 발생시 공간 내의 잔향 시간이 크게 줄었고, 낮은 열 전도율과 우수한 난연성을 나타냈으며, 두께가 얇아 재단 및 현장 시공이 용이함을 확인할 수 있었다.As a result of measuring the sound absorption, heat insulation and flame retardancy of the wall finishing material 10 manufactured in the above embodiment, the reverberation time in the space was greatly reduced when noise was generated, and exhibited low thermal conductivity and excellent flame retardancy, and the thickness was thin so that cutting and field construction Ease could be confirmed.

도 1은 본 발명의 벽 마감재를 개략적으로 도시한 사시도이다.1 is a perspective view schematically showing the wall finish of the present invention.

*도면의 주요 부호에 대한 설명** Description of Major Symbols in Drawings *

10: 벽 마감재 11: 인테리어 벽지10: wall finishing material 11: interior wallpaper

12: 타공 13: 니들 매트12: Perforation 13: Needle Mat

14: 점착제14: adhesive

Claims (3)

인테리어 벽지와 유리섬유 매트가 접합되어 이루어지되, Interior wallpaper is made of glass fiber mats, 상기 인테리어 벽지는 타공 처리된 것이고, 상기 유리섬유 매트는 유리섬유를 니들 펀칭(needle punching)하여 얻은 니들 매트인 것을 특징으로 하는 흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽 마감재.The interior wallpaper is perforated, and the glass fiber mat is a needle mat obtained by needle punching the glass fiber (needle punching), sound absorption, heat insulation, flame retardancy and excellent wall finishing material. 제 1항에 있어서,The method of claim 1, 상기 타공은, 직경이 1 내지 0.1 mm인 것을 특징으로 하는 흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽 마감재.The perforation is a wall finishing material excellent in sound absorption, heat insulation, flame retardancy and interior properties, characterized in that the diameter of 1 to 0.1 mm. 제 1항에 있어서,The method of claim 1, 상기 유리섬유 매트는, 두께가 3 내지 10 mm인 것을 특징으로 하는 흡음성, 단열성, 난연성 및 인테리어성이 우수한 벽 마감재.The glass fiber mat is 3 to 10 mm in thickness, sound absorption, heat insulation, flame retardancy and interior finish excellent wall finishing material.
KR1020090100005A 2009-10-21 2009-10-21 Finishing Material Of Wall KR101187109B1 (en)

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CN103469984A (en) * 2013-09-04 2013-12-25 苏州金义瑞建筑装饰材料有限公司 Sound-absorbing pore board
CN103711275A (en) * 2013-12-17 2014-04-09 陕西科技大学 Heat-preservation sound-absorbing decoration material and manufacturing method thereof
CN104989051A (en) * 2015-06-24 2015-10-21 倪传华 Environment-protecting type heat preservation noise reduction wear-resisting fluorescence wallpaper

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485504A (en) * 2013-09-27 2014-01-01 苏州市依星橡塑有限公司 Thermal insulating wall paper
CN103738042B (en) * 2014-01-22 2015-09-09 雷俊挺 The technique for applying of a kind of water based emulsion liquid in Stone back mesh and application apparatus
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CN111119429A (en) * 2020-01-03 2020-05-08 中国十七冶集团有限公司 Perforated aluminum plate sound-absorbing wall surface of indoor sports basketball court and construction method thereof
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200390729Y1 (en) 2005-04-29 2005-07-25 김죽영 A natural wall of solubility in water synthetic resin
KR100829163B1 (en) 2006-11-28 2008-05-16 이재수 Noninflammable wallpaper made of mica and manufacturing method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200390729Y1 (en) 2005-04-29 2005-07-25 김죽영 A natural wall of solubility in water synthetic resin
KR100829163B1 (en) 2006-11-28 2008-05-16 이재수 Noninflammable wallpaper made of mica and manufacturing method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103469984A (en) * 2013-09-04 2013-12-25 苏州金义瑞建筑装饰材料有限公司 Sound-absorbing pore board
CN103711275A (en) * 2013-12-17 2014-04-09 陕西科技大学 Heat-preservation sound-absorbing decoration material and manufacturing method thereof
CN103711275B (en) * 2013-12-17 2015-11-11 陕西科技大学 A kind of insulation and decoration damping material and preparation method thereof
CN104989051A (en) * 2015-06-24 2015-10-21 倪传华 Environment-protecting type heat preservation noise reduction wear-resisting fluorescence wallpaper

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