KR970008482B1 - A noise absorption plate making method - Google Patents

A noise absorption plate making method Download PDF

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Publication number
KR970008482B1
KR970008482B1 KR1019940018492A KR19940018492A KR970008482B1 KR 970008482 B1 KR970008482 B1 KR 970008482B1 KR 1019940018492 A KR1019940018492 A KR 1019940018492A KR 19940018492 A KR19940018492 A KR 19940018492A KR 970008482 B1 KR970008482 B1 KR 970008482B1
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KR
South Korea
Prior art keywords
mold
polyurethane foam
fiber
foam
prepared
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KR1019940018492A
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Korean (ko)
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KR960004099A (en
Inventor
서경석
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대우자동차 주식회사
양재신
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Priority to KR1019940018492A priority Critical patent/KR970008482B1/en
Publication of KR960004099A publication Critical patent/KR960004099A/en
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Publication of KR970008482B1 publication Critical patent/KR970008482B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/09—Reducing noise

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Passenger Equipment (AREA)
  • Nonwoven Fabrics (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Polyurethane foam and fiber is mixed with a weight ratio of 7:3. The mold is coated with a releasing agent is prepared and polyurethane fiber is set in the mold. Then after closing the mold the prepared polyurethane foam is injected into the mold, keeping in mold temperature at 50 degree Celsius. By controlling the injection amount of the polyurethane foam, the cell structure of the foam can be controlled. As the molded noise blocking panel is composed of polyurethane foam and fiber mixed in the ratio of 7:3, it has a improved reinforcement, a good cushion, a outstanding noise blocking and absorbing in the low frequency and also has a high tensile and bending strength and a good moldability.

Description

자동차용 차음판 제조방법Manufacturing method of sound insulation panel for automobile

제1도는 본 발명의 방법에 의해 차음판의 사용상태 단면도.1 is a cross-sectional view of the state of use of the sound insulation plate by the method of the present invention.

제2도는 본 발명의 방법에 의해 제조된 차음판의 단면도.2 is a cross-sectional view of a sound insulation plate manufactured by the method of the present invention.

제3도는 본 발명의 제조공정도.3 is a manufacturing process diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 폴리우레탄 폼2 : 화이버1: Polyurethane Foam 2: Fiber

A : 차음판B : 바디판넬A: Sound insulation board B: Body panel

C : 카페트C: Carpet

본 발명 자동차용 차음판의 제조방법에 관한 것으로, 특히 자동차의 차음, 흡음효과를 증대시키고, 인장강도 및 굴곡강도 뿐 아니라 탄력성을 증대시키도록 폴리우레찬 폼과 화이버를 적절하게 배합하여 고리형상으로 성형한 성형체를 제조하는 방법이다.The present invention relates to a method for manufacturing a sound insulation board for automobiles, in particular, in order to increase the sound insulation and sound absorbing effect of automobiles, and to increase elasticity as well as tensile strength and flexural strength by appropriately blending polyurethane foam and fibers in a ring shape. It is a method of manufacturing the molded object.

이와 같이 제조되는 차음판은 자동차 내부로 진입되는 소음을 줄이는데 탁월한 효과가 있으며, 특히 시트재로서 탁월한 효과가 있다.The sound insulation panel manufactured as described above has an excellent effect in reducing noise entering the vehicle, and particularly has an excellent effect as a sheet material.

일반적으로 자동차에는 차음, 흡음을 위한 차음판이 적용된 예가 없었으며, 자동차 내의 천정 또는 자동차 내부의 양측면에 폴리우레탄 또는 휄트(WOOL)를 일부 적용하고 있다.In general, there is no example in which a sound insulation plate for sound insulation and sound absorption is applied to a vehicle, and some parts of polyurethane or a wool are applied to both sides of a ceiling or an interior of a vehicle.

이와 같은 경우에는 저음(저주파) 차단이 어렵고, 형상유지가 곤란하여 처지는 사례가 발생하며 장시간사용시 산화에 의한 셀(cell)이 조직파괴가 발생되어 사용시 최초에 이루워지던 차음 흠음 효과가 급속히 저하되어 그 기능을 발휘하지 못하는 단점이 발생되는 것이었다.In this case, low bass (low frequency) is difficult to block, shape retention is difficult, and sagging occurs. The disadvantage was that it does not function.

본 발명은 폴리우레탄 폼과 화이버를 적절히 혼합시켜 서로 고리형상 성형케 하므로써 기존 단일 소재들에 비해 보강기능 및 저주파에 대한 차음 및 흡음성을 증대시킬 수 있도록 하고, 인장강도 및 굴곡강도 성형성 등이 우수할 뿐 아니라 발포셀의 조직을 조절할 수 있어 사용기준이 까다로운 차량의 방음제로서의 요구 특성에 부응할 수 있으며 중량이 가벼움으로서 특히, 차량용 흡음, 방음재로서 적용에 적합하도록 한 것이다.According to the present invention, the polyurethane foam and the fiber are properly mixed to form a ring shape with each other, so that the reinforcing function and the sound insulation and sound absorption against low frequency can be increased, and the tensile strength and the bending strength are excellent compared to existing single materials. In addition, the structure of the foam cell can be adjusted to meet the demanded characteristics of the vehicle as a soundproofing material, which is difficult to use standards, and is light in weight, and is particularly suitable for application as a sound absorbing and soundproofing material for a vehicle.

이하 본 발명의 요지를 첨부도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, the gist of the present invention will be described in detail with reference to the accompanying drawings.

폴리우레탄 폼과 화이버를 중량비 7:3 비율로 준비하고, 몰드를 연다음, 몰드에 이형체를 도포하여 준비된 화이버를 셋팅한 후 몰드를 닫고, 준비된 폴리우레탄 폼을 몰드 내에 분사하되 몰드 내의 온도를 50℃로 하여 폴리우레탄 폼과 화이버를 통상과 같이 성형케한다.Prepare the polyurethane foam and fibers in a weight ratio of 7: 3, open the mold, apply the mold to the mold, set the prepared fibers, close the mold, and spray the prepared polyurethane foam into the mold, but maintain the temperature in the mold. It is made into 50 degreeC, and a polyurethane foam and a fiber are shape | molded as usual.

상기에 있어서, 폴리우레탄 폼의 분사량을 조절케 하므로써 발포셀의 조직을 조절할 수 있다.In the above, it is possible to control the structure of the foam cell by adjusting the injection amount of the polyurethane foam.

즉, 폴리우레탄 폼의 양을 많이 하면 밀도가 가볍게 할 수 있다.That is, if the amount of polyurethane foam is large, the density can be made light.

또한 화이버는 야자나무 껍질 또는 야자 열매에서 얻는다.Fiber is also obtained from palm bark or palm fruit.

제3도에 도시된 커링, 몰드오픈, 디몰딩, 트리밍은 통상의 성형순서이며, 도면 중 1는 폴리우레탄 폼, 2는 화이버, A는 차음판, B는 바디판넬, C는 카페트이다.Curing, mold-opening, de-molding, and trimming shown in FIG. 3 are typical molding procedures, in which 1 is a polyurethane foam, 2 is a fiber, A is a sound insulation board, B is a body panel, and C is a carpet.

이와 같이 하여 얻어진 본 발명의 차음판은 폴리우레탄 폼과 화이버가 7:3의 비율로 혼합되어 성형되므로서 기존 단일 소재들에 비해 보강기능이 향상되고, 쿠션성이 좋으며, 특히 스폰지 상의 다공을 가질 수 있어 저주파에 대한 차음 및 흡음성을 비롯하여 인장강도 및 굴곡강도, 성형성 등이 우수할 뿐 아니라, 발포셀이 조직을 조절할 수 있어 요구특성에 부응할 수 있고, 단열(INSULATION) 효과는 물론 차음판의 중량도 매우 가볍게 할 수 있어 자동차 내에 들어오는 소음을 차단하고 차량 실내 온도를 외부온도와 차단시키는 단열 효과를 가져오게 할 수 있으며, 특히 본 발명은 자동차용 시트에 가장 적합한 것이다.The sound insulation plate of the present invention obtained in this way is formed by mixing a polyurethane foam and fibers in a ratio of 7: 3, thereby improving reinforcement function and cushioning properties, in particular, sponge-like pores compared to existing single materials. It is excellent in tensile strength, flexural strength and formability as well as sound insulation and sound absorption against low frequency, foam cell can adjust the structure to meet the required characteristics, insulation effect as well as sound insulation panel The weight can also be very light, so that it can block the noise coming into the vehicle and bring the insulation effect to block the vehicle interior temperature and the outside temperature, in particular the present invention is most suitable for a car seat.

Claims (1)

폴리우레탄 폼과 화이버를 중량비 7:3 비율로 준비하고, 몰드를 연 다음, 몰드에 이형제를 도포하여 준비된 화이버를 셋팅한 후 몰드를 닫고, 준비된 폴리우레탄 폼을 몰드 내에 분사하되 몰드 내의 온도를 50℃로 하여 폴리우레탄 폼과 화이버를 통상과 같이 성형케하되 폴리우레탄 폼의 분사량을 조절케 하므로써 발포셀의 조직을 할 수 있게 한 것을 특징으로 하는 자동차용 차음판 제조방법.Prepare the polyurethane foam and fibers in a weight ratio of 7: 3, open the mold, apply the release agent to the mold, set the prepared fibers, close the mold, and spray the prepared polyurethane foam into the mold, Method of manufacturing a sound insulation panel for automobiles, characterized in that by molding the polyurethane foam and fibers at a temperature as usual, but by controlling the injection amount of the polyurethane foam to organize the foam cells.
KR1019940018492A 1994-07-28 1994-07-28 A noise absorption plate making method KR970008482B1 (en)

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KR1019940018492A KR970008482B1 (en) 1994-07-28 1994-07-28 A noise absorption plate making method

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KR1019940018492A KR970008482B1 (en) 1994-07-28 1994-07-28 A noise absorption plate making method

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KR970008482B1 true KR970008482B1 (en) 1997-05-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7541259B2 (en) 2006-07-24 2009-06-02 Hynix Semiconductor Inc. Semiconductor device having a compressed device isolation structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100517695B1 (en) * 2002-12-12 2005-09-29 현대모비스 주식회사 sound-absorbing materials bolting structure in a car

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7541259B2 (en) 2006-07-24 2009-06-02 Hynix Semiconductor Inc. Semiconductor device having a compressed device isolation structure

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