KR101697699B1 - 2 of the engine cover noise preventing material and a manufacturing method for automobiles - Google Patents

2 of the engine cover noise preventing material and a manufacturing method for automobiles Download PDF

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KR101697699B1
KR101697699B1 KR1020160094218A KR20160094218A KR101697699B1 KR 101697699 B1 KR101697699 B1 KR 101697699B1 KR 1020160094218 A KR1020160094218 A KR 1020160094218A KR 20160094218 A KR20160094218 A KR 20160094218A KR 101697699 B1 KR101697699 B1 KR 101697699B1
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felt
pet
fiber
polypropylene
reinforcing
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KR1020160094218A
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Korean (ko)
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전명옥
서민석
김종광
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현대합성공업 주식회사
주식회사 아이에프엘
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/082—Engine compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Abstract

The present invention relates to a dual engine cover noise preventing material for a vehicle and a manufacturing method thereof and, more specifically, to a dual engine cover noise preventing material for a vehicle and a manufacturing method thereof, which can prevent noise of an engine cover. The present invention comprises: a polypropylene felt manufacturing step; a pet and LM fiber manufacturing step; a mixed reinforcing felt manufacturing step; a mixed reinforcing felt preheating step; a mold cooling forming step; a noise preventing material manufacturing step; and a noise preventing material high frequency thermosetting bonding step.

Description

자동차용 2중 엔진 커버 노이즈 방지재와 그 제조방법{2 of the engine cover noise preventing material and a manufacturing method for automobiles}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a noise-

본 발명은 자동차용 2중 엔진 커버 노이즈 방지재와 그 제조방법에 관한 것으로, 더욱 상세하게는 폴리프로필렌(PP)과 pet 펠트 및 LM(화이바)으로 이루어지는 보강혼합 펠트를 니들 펀칭하여 성형하여 오븐을 통과하면서 예열하고 주어진 형상을 따라 가압 성형한 후 노이즈 방지재를 규격에 맞게 커팅하면서 선단을 따라 융착하여 상기 보강혼합 펠트에 고주파 열융착하여 접합하는 것을 특징으로 하는 자동차용 2중 엔진 커버 노이즈 방지재와 그 제조방법에 관한 것이다.More particularly, the present invention relates to a double engine cover anti-noise material for automobiles, and more particularly, to a method for manufacturing a double engine cover anti-noise material for automobiles, Wherein the noise preventing member is bonded to the reinforcing compound felt by high-frequency welding by welding along the tip while cutting the noise preventing member according to the standard, And a manufacturing method thereof.

일반적으로, 주행 중인 자동차에는 다양한 경로를 통해, 차량 실내로 외부 소음이 유입된다. 타이어와 지면 간의 마찰음, 배기 계통의 고온, 고압의 연소가스 유동으로 발생하는 소음, 엔진에서 발생하여 차체 또는 공기를 통해 전달되는 엔진 투과 소음은 승객의 귀로 전달되어 차량의 정숙감을 저해하는 요소가 된다.Generally, outside noise is introduced into the vehicle interior through various routes to the vehicle in motion. The friction noise between the tire and the ground, the noise generated by the high-temperature and high-pressure combustion gas flow of the exhaust system, and the engine-transmitted noise generated by the engine or transmitted through the air are transmitted to the passenger's ears, .

엔진 투과 소음을 억제하기 위하여, 일반적으로 엔진 커버 또는 후드 인슐레이터를 사용하고 있으나, 그것만으로는 엔진 투과 소음을 원하는 수준까지 제거하는 데에는 다소 한계가 있다.In general, an engine cover or a hood insulator is used in order to suppress the engine transmission noise, but there is a limitation in removing the engine transmission noise to a desired level by itself.

따라서 자동차에는 전방과 좌측 측면, 그리고 바닥에 흡음재를 장착하는데, 예컨대 엔진룸에서 발생하는 소음을 차단하기 위하여 엔진룸과 차실을 구분하는 대쉬 패널에 흡음재가 설치되며, 차체의 측면을 통해 유입되는 소음을 차단하기 위하여 사이드 패널에도 흡음재를 부착하고 있다.Accordingly, a sound absorbing material is mounted on the front, the left side, and the floor of the vehicle. For example, a sound absorbing material is installed on a dash panel that separates the engine room from the vehicle room to block noise generated in the engine room. A sound absorbing material is attached to the side panel.

이러한 흡음재를 사용하는 재질로 통상 유리섬유, 우레탄 폼, 잡사 펠트를 사용한다. 주로 사용되는 우레탄 폼의 경우 냄새가 유독하며, 가연성으로 인하여 사고 시 유독성 가스가 발생될 우려가 있고, 흡음재로 제조하는 경우에 발포두께가 얇은 경우 성형이 어려운 문제점이 있다.As a material using such a sound absorbing material, usually glass fiber, urethane foam, or felt felt is used. In the case of urethane foam, which is mainly used, the odor is toxic and toxic gas may be generated at the time of an accident due to flammability, and when the foamed material is made of a sound absorbing material, molding is difficult.

또한 최근 친환경적 요인과 재활용 가능 여부에 대한 각국의 규제가 점차적으로 강화되고 있는 추세여서 우레탄폼 보다는 폴리프로필렌(Polypropylene, PP)과 같은 열가소성 수지를 기반으로 하는 섬유 펠트와, 흡음 및 단열 성능의 향상을 위하여 폴리에틸렌 테레프탈레이트(polyethylene terephthalate, PET) 펠트가 널리 사용되고 있다.Recently, regulations on the environment-friendly factors and the possibility of recycling have been gradually strengthened. Therefore, fiber felt based on thermoplastic resin such as polypropylene (PP) rather than urethane foam and improvement of sound absorption and insulation performance Polyethylene terephthalate (PET) felt is widely used.

이러한 폴리에틸렌 테레프탈레이트 수지를 함유한 흡음재에 관해 한국등록특허 제10-893690호에는 폐 폴리우레탄 스크랩을 압축성형하여 제조된 폴리우레탄 시트와 폴리우레탄 시트의 외측으로 PET 시트를 적층하여 열융착으로 상호 결합한 흡/차음용 자동차 내장재를 제안하였다. 그러나 여전히 활용이 어려운 폴리우레탄 시트를 기본으로 하여 펠트나 재활용 잡사 등을 다시 재활용할 수 있는 친환경적인 흡음재라고 하기에는 다소 부족하며, With respect to a sound absorbing material containing such a polyethylene terephthalate resin, Korean Patent No. 10-893690 discloses a polyurethane sheet produced by compression molding a waste polyurethane scrap and a PET sheet laminated outside the polyurethane sheet, And proposed a car interior material for ash / tea. However, it is somewhat insufficient to say that it is an environmentally friendly sound absorbing material which can recycle felt, recycle and the like based on a polyurethane sheet which is still difficult to use,

1액형 접착제를 사용하여 폐 폴리우레탄폼을 압축, 공극을 메움으로써 흡음률과 휘발성유기화합물(Volatileorganic compounds, VOC) 규제에 좋지 않은 영향을 끼칠 수 있다.Compressing the waste polyurethane foam using a one-component adhesive to fill the pores can adversely affect the absorption rate and the regulation of volatile organic compounds (VOC).

한편, 음향 특성에 따른 차량의 NVH(Noise, Vibration, Harness) 성능을 향상시키기 위하여, 중대형 고급차종에 서는 주로 고중량, 고후도의 흡음재를 사용한다. 이 경우 폴리우레탄 폼이 소음을 가장 많이 감소시키며, 차량 정숙성 또한 향상되나, 상기한 바와 같이 재활용이 불가하여 친환경적인 소재가 아니며, 고후도로 제작되는 경우 차체의 중량을 증가시켜 연비를 저해하는 요소로 작용하게 된다.On the other hand, in order to improve the NVH (Noise, Vibration, Harness) performance of the vehicle according to the acoustic characteristics, a heavy weight and a thick sound absorbing material are mainly used in medium and large luxury cars. In this case, the polyurethane foam reduces the noise the most and improves the quietness of the vehicle. However, as described above, since recycling is not possible, it is not an environmentally friendly material. .

이러한 상기 결점을 방지하기 위한 대한민국특허로는 특허등록번호 제1470478호가 제안되었으며, 이는 저융점 폴리에틸렌 테레프탈레이트(Polyethylene terephthalate) 섬유와 레귤러 폴리에틸렌 테레프탈레이트 섬유를 카딩(Carding)하고 니들펀칭하여 제1 펠트층(Felt layer) 및 제2 펠트층을 제작하는 단계;Patent No. 1470478 discloses a Korean patent for preventing such drawbacks. It is proposed that a low-melting polyethylene terephthalate fiber and a regular polyethylene terephthalate fiber are carded and needle-punched to form a first felt layer (Felt layer) and a second felt layer;

상기 제1 펠트층을 하부 지그에 삽입하고 상기 제2 펠트층을 상기 하부 지그의 상부에 위치하는 상부 지그에 삽입하는 단계;Inserting the first felt layer into a lower jig and inserting the second felt layer into an upper jig located above the lower jig;

상기 하부 지그와 상기 상부 지그의 일단에 위치하는 열판을 슬라이드 이동시켜 상기 하부 지그와 상기 상부 지그 사이로 삽입하는 단계;Inserting the lower jig and the hot plate located at one end of the upper jig into a space between the lower jig and the upper jig;

상기 하부 지그와 상기 상부 지그를 상하로 이동시켜 상기 열판에 상기 제1 펠트층과 제2 펠트층을 인접하게 위치시켜 상기 제1 펠트층의 상부면과 상기 제2 펠트층의 하부면을 상기 열판의 온도에 의해 간접 용융시키는 단계;The lower jig and the upper jig are moved up and down to place the first felt layer and the second felt layer adjacent to each other on the heat plate so that the upper surface of the first felt layer and the lower surface of the second felt layer are brought into contact with the heat plate Indirectly melting by the temperature of < RTI ID = 0.0 >

상기 제1 펠트층과 상기 제2 펠트층의 간접 용융시킨 후 상기 하부 지그와 상기 상부 지그 사이에서 상기 열판을 인출시키는 단계; 및Drawing the hot plate between the lower jig and the upper jig after indirect melting the first felt layer and the second felt layer; And

상기 열판을 인출 후 상기 하부 지그와 상부 지그를 상하로 이동시켜 간접 용융된 상기 제1 펠트층과 제2 펠트층을 압착하여 합지하는 단계를 포함하는 것이다.And drawing the hot plate and moving the lower jig and the upper jig up and down to press the first and second felted layers which are indirectly melted and to join them together.

그러나 이러한 종래의 기술은 제1, 2 펠트층을 압착하여 합지하는 것이므로 노이즈를 정상적으로 해소할 수 있는지에 대하여 많은 의문이 있다.However, this conventional technique has a lot of questions as to whether noise can be solved normally because the first and second felt layers are pressed and joined together.

그리고 특허등록번호 제1375442호는 "저융점 폴리에틸렌 테레프탈레이트(Polyethylene terephthalate) 섬유와 레귤러 폴리에틸렌 테레프탈레이트 섬유를 함유하는 상부펠트층(Felt layer) 및 하부펠트층; 및Patent No. 1375442 discloses a laminate comprising a lower felt layer and a lower felt layer containing a low melting point polyethylene terephthalate fiber and a regular polyethylene terephthalate fiber;

상기 상부펠트층과 하부펠트층 사이에 개재되며, 폴리프로필렌(Polypropylene)을 함유하는 에어라이트층을 포함하는 기술이 제안되었다.A technique comprising an airlight layer interposed between the upper felt layer and the lower felt layer and containing polypropylene has been proposed.

그러나 이러한 종래의 기술은 상부펠트층과 하부펠트층을 각각 성형해야 하고, 상기 상, 하부 펠트층의 사이에 에어라이트층을 포함하는 것이므로 원가가 크게 상승하며 구조에 따른 생산의 복잡성과 어려움이 있었다.However, this conventional technique has to form the upper and lower felt layers, respectively, and since the air layer is included between the upper and lower felt layers, the cost increases greatly, .

특히, 종래의 흡음재는 주로 pp극세사로 구성되어 있어 엔진룸의 온도에 노출되면 내열성 부분이 취약하여 장시간 운전시 심하게는 딱딱하게 굳어 어스러지거나 부스러지기 때문에 가루가 발생할 수 있다 . 엔진룸의 온도는 150~180℃인데 반해, 기존 pp 극세사는 온도가 통상적으로 100℃정도 이기 때문이다. Particularly, since the conventional sound absorbing material is composed of micro-fine fibers mainly composed of polypropylene, the heat-resistant portion is weak when exposed to the engine room temperature, so that it may be crumbled or crumbled due to severe hardness during long- The temperature of the engine room is 150 ~ 180 ℃, whereas the temperature of the existing micro-plastic is usually 100 ℃.

문헌 1. 특허등록번호 제1375442호(2014. 03. 11. 등록)Literature 1. Patent Registration No. 1375442 (Registered on Mar. 11, 2014) 문헌 2. 특허등록번호 제1470478호(2014. 12. 02. 등록)Document 2. Patent Registration No. 1470478 (Registered on December 12, 2014) 문헌 3. 특허등록번호 제0893690호(2009. 04. 09. 등록)Literature 3. Patent Registration No. 0893690 (Registered on April 04, 2009) 문헌 4. 특허등록번호 제1128199호(2012. 03. 12. 등록)Literature 4. Patent Registration No. 1128199 (registered on Mar. 12, 2012)

따라서 이러한 종래의 결점을 해소하기 위하여 안출된 것으로, 본 발명의 해결과제는, 폴리프로필렌과 pet 펠트 및 LM 화이바로 이루어지는 보강혼합 펠트에 노이즈 방지재를 결합하여 엔진 커버의 노이즈를 방지할 수 있도록 하는 것을 목적으로 한다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a reinforced composite felt composed of polypropylene, pet felt and LM fiber, .

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본 발명은 폴리프로필렌(PP, polypropylene) 펠트(felt)를 1차적으로 제조하는 폴리프로필렌 펠트 제조단계;The present invention relates to a process for producing a polypropylene felt (PP) which primarily produces a polypropylene (PP) felt;

pet(폴리에틸렌 테레프탈레이트, polyethylene terephthalate)와 LM 화이바(fiber)를 니들 펀칭하여 결속에 의해 보강혼합 되도록 하는 pet와 LM 화이바 제조단계;PET and LM fiber fabrication steps in which PET (polyethylene terephthalate) and LM fiber are needle-punched and reinforced by binding;

상기 폴리프로필렌(PP) 펠트와 결속된 pet 및 LM 화이바를 공급하여 900∼1,500g/㎡의 중량이 되도록 결속시켜 보강혼합 펠트를 성형하는 폴리프로필렌 펠트와 pet 및 LM 화이바 결속으로 보강혼합 펠트 제조단계;The pet and LM fiber bonded with the polypropylene (PP) felt were fed to bind the PET and LM fibers to a weight of 900 to 1,500 g / m < 2 > to form a reinforced mixed felt. ;

보강혼합 펠트를 오븐 MC에 자동 투입시켜 예열하는 보강혼합 펠트 예열단계;Reinforced blend felting preheating step in which the reinforcing blended felt is automatically fed into the oven MC to preheat;

몰드에서 프레스 압력을 가함으로써 냉각 성형으로 정해진 제품을 얻어 외곽 라인을 커팅하는 몰드 냉각 성형단계;A mold cooling forming step of obtaining a product determined by cold forming by applying a press pressure to the mold to cut the contour line;

필요한 모양으로 컷팅하며 선단의 마감 융착부을 따라서 열 융착이 이루어지도록 하는 노이즈 방지재 제조단계; 및A noise-proofing material manufacturing step of cutting the material into a required shape and performing thermal fusion bonding along the welded portion at the front end; And

상기 보강혼합 펠트의 상측에 노이즈 방지재를 공급하여 성형상태에 따른 위치로 결합하고, 일정한 위치에서 고주파 열 융착부를 통하여 접합하는 것으로 2중 엔진커버를 성형하는 보강혼합 펠트에 노이즈 방지재 고주파 열 융착 접착단계; 를 포함하는 것이다.A noise preventing member is provided on the upper side of the reinforcing and mixing felt to be joined to a position corresponding to a molding state and joined at a predetermined position through a high frequency thermal welding portion to form a reinforced mixing felt for forming a double engine cover, An adhesion step; .

본 발명은 폴리프로필렌(PP)과 pet 펠트 및 LM 화이바를 니들 펀칭하여 보강 혼합 펠트를 성형함으로써 하나의 보강혼합 펠트로 충분한 보강을 통한 강도를 제공하여 안전성을 확보하고, 상기 보강혼합 펠트를 오븐에서 예열한 후 몰드에서 제품 형상을 성형하고 트리밍 작업 후 노이즈 방지재를 규격에 맞게 커팅하고 상기 보강혼합 펠트와 노이즈 방지재를 고주파 열융착으로 성형함으로써 흡음성을 충분하게 제공하는 효과가 있다.The present invention relates to a method for manufacturing a reinforced composite felt, which comprises needle-punching polypropylene (PP), pet felt and LM fiber to form a reinforced and mixed felt, thereby providing sufficient strength by reinforcing one reinforcing mixed felt to secure safety, And then shaping the product shape in the mold, cutting the noise preventing member after the trimming operation according to the standard, and forming the reinforcing mixed felt and the noise preventing member by high-frequency heat welding.

도 1 은 본 발명의 바람직한 실시예를 나타낸 분리상태 단면도
도 2 는 본 발명의 보강 혼합층과 노이즈 방지재를 결합한 상태의 단면도
도 3 은 본 발명의 보강 혼합층에 노이즈 방지재를 열 융착한 상태의 저면도
도 4 는 본 발명의 가장 바람직한 실시예를 나타낸 블럭도BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view
FIG. 2 is a cross-sectional view of a state in which the reinforcing mixed layer of the present invention and the anti-
Fig. 3 is a bottom view of the noise suppression material in the state where the noise suppression material is thermally fused to the reinforcing mixed layer of the present invention
Figure 4 is a block diagram illustrating the most preferred embodiment of the present invention.

이하에서 본 발명의 바람직한 실시예를 첨부시킨 도면에 따라서 상세하게 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 바람직한 실시예를 나타낸 분리상태 단면도이고, 도 2는 본 발명의 보강 혼합층과 노이즈 방지재를 결합한 상태의 단면도, 도 3은 본 발명의 보강 혼합층에 노이즈 방지재를 열 융착한 상태의 저면도를 나타낸 것이다.FIG. 1 is a cross-sectional view showing a preferred embodiment of the present invention, FIG. 2 is a cross-sectional view of a state in which a reinforcing mixed layer of the present invention is combined with a noise preventing material, FIG. State diagram of the state.

본 발명은, 열가소성 범용수지의 한 가지로 내열성이 있고, 내약품성에도 뛰어난 폴리프로필렌(PP, polypropylene)과 pet(폴리에틸렌 테레프탈레이트, polyethylene terephthalate) 및 LM 화이바(fiber)를 니들 펀칭하여 보강혼합 펠트(10)를 성형하여 900∼1,500g/㎡의 중량을 준비하고, 상기 보강혼합 펠트(10)를 오븐 M/C에 넣고 예열하는 것이다.The present invention relates to a thermoplastic general-purpose resin which is heat-resistant and which is excellent in chemical resistance, and which is made by needle punching polypropylene (PP), pet (polyethylene terephthalate), and LM fiber 10) to prepare a weight of 900 to 1,500 g / m < 2 >, and the reinforced mixing felt 10 is placed in an oven M / C and preheated.

상기 오븐 M/C에서 예열된 보강혼합 펠트(10)를 몰드에 공급하여 주어진 형상으로 성형하고, 트리밍 작업 후 컷팅과 동시에 선단을 따라서 열융착한 노이즈 방지재(20)를 상기 보강혼합 펠트(10)의 한쪽에서 초음파 열융착하여 2중 엔진커버(30)를 성형하는 것이다.The reinforced composite felt 10 pre-heated in the oven M / C is supplied to the mold to form a given shape, and after the trimming operation, the noise preventing member 20, which is heat- And then the two-piece engine cover 30 is formed.

상기 보강혼합 펠트(10)는 폴리프로필렌(PP, polypropylene) 펠트(felt)를 1차적으로 제조하고, 중량이 400∼700g/㎡으로 하며 두께는 1∼5mm가 되도록 하며, 전체 중량의 45∼55% 수준이 되도록 혼방하여 준비한다.The reinforced blend felt 10 is made primarily of polypropylene (PP) felt and has a weight of 400 to 700 g / m 2, a thickness of 1 to 5 mm, and a total weight of 45 to 55 % Level.

그리고 pet(폴리에틸렌 테레프탈레이트, polyethylene terephthalate)와 LM 화이바(fiber)를 2차적으로 제조하되;Secondary production of pet (polyethylene terephthalate) and LM fiber (fiber);

전체 펠트 중량의 45∼55%가 되도록 하고, 이중 LM 화이바는 38∼42% 정도가 되며 중량이 500∼800g/㎡이 되도록 한다.45 to 55% of the total felt weight, the double LM fiber is about 38 to 42%, and the weight is 500 to 800 g / m 2.

상기 1차로 제조한 폴리프로필렌(PP, polypropylene) 펠트(felt)에 2차로 제조한 pet(폴리에틸렌 테레프탈레이트, polyethylene terephthalate)와 LM 화이바(fiber)를 니들 펀칭하여 결속에 의해 보강혼합 되도록 결합하여 중량이 900∼1,500g/㎡ 되도록 한다.PET (polyethylene terephthalate) and LM fiber fabric, which are secondarily manufactured on the first-produced polypropylene (PP) felt, are needle-punched to be reinforced and mixed by binding, 900 to 1,500 g / m 2.

상기 보강혼합 펠트(10)를 오븐 M/C에 자동으로 투입하여 예열시키는데, 예열온도를 180∼350℃로 40∼90초간 예열시켜 성형을 위한 준비된 몰드에 투입하여 1∼15℃의 온도에서 45∼150ton의 프레스 압력을 가함으로써 냉각 성형으로 정해진 제품을 얻는 것이다.The reinforced blended felt 10 is automatically put into an oven M / C to preheat it. The pre-heated temperature is pre-heated to 180 to 350 ° C for 40 to 90 seconds and put into a mold prepared for molding. To obtain a product determined by cooling molding by applying a pressing pressure of 150 tons.

상기 성형된 제품의 외곽 라인을 컷팅하고, 노이즈 방지재(20)를 필요한 모양으로 컷팅하며 선단의 마감 융착부(40)을 따라서 열 융착이 이루어지도록 하는 것이다.The outer product line of the molded product is cut, the noise preventing member 20 is cut into a required shape, and heat fusion is performed along the finishing fused portion 40 at the tip end.

상기 노이즈 방지재(20)는 3M pet극세사와 익성의 pct 극세사 및 휴비스 노바마이크로(nova-micro) 중 어느 하나를 사용하는 것이며, 180∼430g/㎡의 중량으로 이루어지는 것이 바람직하다.The noise preventing member 20 may be made of any one of 3M pet micro-yarn, pct micro-fiber, and huvis nova-micro, and preferably has a weight of 180 to 430 g / m 2.

상기 보강혼합 펠트(10) 중 폴리프로필렌(PP) 펠트의 하측에 노이즈 방지재(20)를 공급하여 성형상태에 따른 위치로 결합하고, 일정한 위치에서 고주파 열 융착부(50)를 통하여 접합하는 것으로 2중 엔진커버(30)를 성형하는 것이다.The noise preventing member 20 is supplied to the lower side of the polypropylene (PP) felt in the reinforced mixing felt 10 to be joined at a position corresponding to the molding state and is bonded at a predetermined position through the high- Thereby forming the double engine cover 30.

상기 고주파 열 융착부(50)를 대신하여 핫멜트로 접착하는 것이 가능하다.It is possible to adhere with hot-melt instead of the high-frequency heat-sealed portion 50.

이러한 구성으로 이루어진 본 발명의 가장 바람직한 실시예를 도 4의 블럭도와 도면을 통하여 보다 상세하게 설명하기로 한다.The most preferred embodiment of the present invention having such a configuration will be described in detail with reference to the block diagrams and the drawings of FIG.

폴리프로필렌(PP) 펠트를 제조하는 단계(S10)로, 400∼700g/㎡의 중량과 1∼5mm의 두께, 전체 중량의 45∼55% 수준이 되도록 혼방하여 폴리프로필렌(PP, polypropylene) 펠트(felt)를 1차적으로 제조하는 것이다.A method for producing a polypropylene (PP) felt, comprising the steps of (S10) blending a polypropylene (PP) felt to a weight of 400 to 700 g / m 2 and a thickness of 1 to 5 mm, felt in the first place.

상기 폴리프로필렌(PP) 펠트를 제조한 후 prt(폴리에틸렌 테레프탈레이트)와 LM 화이바를 함께 제조하는 pet와 LM 화이바 제조단계(S20)로, 전체 펠트 중량의 45∼55%가 되도록 하되; 이중 LM 화이바는 38∼42% 정도가 되며 중량이 500∼800g/㎡이 되도록 하고, pet(폴리에틸렌 테레프탈레이트, polyethylene terephthalate)와 LM 화이바(fiber)를 니들 펀칭하여 결속에 의해 보강혼합 되도록 하는 것이다.(Pet) and LM fiber manufacturing step (S20) in which prt (polyethylene terephthalate) and LM fiber are manufactured together after the polypropylene (PP) felt is manufactured, to be 45 to 55% of the total felt weight; The weight of the LM fiber is about 38 to 42%, the weight is 500 to 800 g / m 2, and PET (polyethylene terephthalate) and LM fiber are needle-punched to be reinforced and mixed by binding.

상기 폴리프로필렌 펠트와 pet 및 LM 화이바 결속으로 보강혼합 펠트 제조단계(S30)를 수행하는 것이며, 상기 폴리프로필렌(PP) 펠트와 결속된 pet 및 LM 화이바를 공급하여 900∼1,500g/㎡의 중량이 되도록 결속시켜 보강혼합 펠트(10)를 성형하는 것이다.(PET) and LM fiber bindings (S30), and the pet and LM fiber bonded to the polypropylene (PP) felt are fed to produce a weight of 900 to 1,500 g / So that the reinforced composite felt 10 is formed.

상기 pst와 LM 화이바는 혼방 결속되고, 하측으로 폴리프로필렌 펠트가 공급되어 보강혼합 펠트(10)를 형성하는 것이다.The pst and the LM fiber are mixed together, and the polypropylene felt is fed to the lower side to form the reinforced composite felt 10.

상기 보강혼합 펠트(10)는 보강혼합 펠트 예열단계(S40)를 수행하는 것이며, 상기 보강혼합 펠트(10)를 180∼350℃로 40∼90초간 오븐 MC에 자동 투입시켜 예열하는 것이다.The reinforced composite felt 10 performs a reinforced composite felt preheating step S40. The reinforced composite felt 10 is preheated by automatically feeding the reinforced composite felt 10 to the oven MC at 180 to 350 캜 for 40 to 90 seconds.

상기 예열된 보강혼합 펠트(10)를 냉각 성형하는 몰드 냉각 성형단계(S50)를 수행하는 것으로, 1∼13℃의 온도를 유지하는 몰드에서 45∼130ton의 프레스 압력을 가함으로써 냉각 성형으로 정해진 제품을 얻어 외곽 라인을 커팅하는 것이다.(S50) in which the preheated reinforced blended felt 10 is subjected to cooling molding, whereby a product defined by cooling molding by applying a press pressure of 45 to 130 tons in a mold maintaining a temperature of 1 to 13 캜 And cutting the outline line.

그리고 노이즈 방지재 제조단계(S60)는, 노이즈 방지재(20)를 필요한 모양으로 컷팅하며 선단의 마감 융착부(40)을 따라서 열 융착이 이루어지도록 함으로써 노이즈 방지재(20)를 제조하는 것이다.The noise preventing material manufacturing step S60 is to manufacture the noise preventing member 20 by cutting the noise preventing member 20 into a required shape and making the heat welding along the finishing fused portion 40 at the tip.

상기 노이즈 방지재(20)는 3M pet 극세사와 익성의 pct 극세사 및 후비스 노바마이크로(nova-micro) 중 어느 하나를 사용하는 것이며, 180∼430g/㎡의 중량으로 이루어지는 것이 바람직하다.The noise preventing member 20 may be made of any one of 3M pet micro-wax, pct micro-fibers and nova-micro, and preferably has a weight of 180 to 430 g / m 2.

마지막으로, 보강혼합 펠트에 노이즈 방지재 고주파 열융착 접착단계(S70)를 수행하는 것으로, 보강혼합 펠트(10)의 상측에 노이즈 방지재(20)를 공급하여 성형상태에 따른 위치로 결합하고, 일정한 위치에서 고주파 열 융착부(50)를 통하여 접합하는 것으로 2중 엔진커버(30)를 성형하는 것이다.Lastly, the noise-preventing material (S70) is applied to the reinforced blended felt to allow the noise-preventing material (20) to be supplied to the upper side of the reinforced blended felt (10) And is then joined at a predetermined position via the high-frequency thermal welding portion 50 to form the double engine cover 30. [

이러한 본 발명은 보강혼합 펠트(10)의 한쪽으로 노이즈 방지재(20)를 고주파 열 융착하여 2중 엔진커버(30)를 성형한 후 노이즈 방지재(20)가 엔진방향에 위치하도록 하고, 보강혼합 펠트(10)가 외부로 노출되도록 설치함으로써 엔진의 노이즈를 방지할 수 있는 것이다.The present invention is characterized in that the noise preventing member 20 is thermally fused to one side of the reinforced composite felt 10 to form the double engine cover 30 so that the noise preventing member 20 is positioned in the engine direction, It is possible to prevent the noise of the engine by providing the mixed felt 10 so as to be exposed to the outside.

상기 2중 엔진커버(30)는 보강혼합 펠트(10)를 폴리프로필렌(PP) 펠트와 pet 및 LM 화이바와 같은 3중 구조로 성형함으로써 강성을 향상시켜 설치된 후에 쉽게 손상되거나 변형되지 않게 되는 것이며, 하측으로 설치한 노이즈 방지재(20)는 고주파 열 융착을 통하여 간편하게 설치하고, 엔진과 소정의 간격을 두고 설치된 상태에서 융점이 간접열 300℃ 이상이므로 엔진에서 발생하는 간접열(180℃ 이하)에 전혀 영향을 받지 않는 것이다.The double engine cover 30 improves the rigidity by molding the reinforced composite felt 10 into a triple structure such as polypropylene (PP) felt and pet and LM fiber so that it is not easily damaged or deformed after being installed, The noise preventing member 20 provided on the lower side is easily installed through high-frequency welding. Since the melting point of the noise preventing member 20 is 300 ° C or more in a state where the engine is installed at a predetermined distance from the engine, the indirect heat It is not affected at all.

상기 2중 엔진커버(30)는 보강혼합 펠트(10)와 노이즈 방지재(20)의 2중으로 이루어진 것이므로 간편하게 제조할 수 있는 매우 간단한 구조를 제공하며, 가벼워 원료의 소모량이 적어 매우 저렴한 가격을 공급할 수 있는 것이다.Since the double engine cover 30 is made up of the reinforced blend felt 10 and the noise preventing material 20, it provides a very simple structure that can be easily manufactured and provides a very low price due to its light weight and low consumption of raw materials. You can.

본 발명은 플리프로필렌(PP) 펠트와 pet 및 LM 화이바를 니들 펀칭하여 일체형으로 결속한 보강혼합 펠트를 예열시킨 후 냉각성형을 통하여 성형하고, 하측으로 노이즈 방지재를 고주파 열 융착 고정시키는 2중 엔진커버를 제공하여 원가를 절감하고 엔진 등에서 발생하는 노이즈를 해소하는 매우 유용한 발명을 제공하는 것이다. The present invention relates to a method for manufacturing a reinforced composite felt, which comprises pre-heating a reinforced composite felt bonded together with a polypropylene (PP) felt, PET and LM fibers by needle punching the PET and LM fibers, molding the same through cold forming, The present invention provides a very useful invention for reducing the cost and noise of the engine.

10 : 보강혼합 펠트 20 : 노이즈 방지재
30 : 2중 엔진커버 40 : 마감 융착부
50 : 고주파 열 융착부10: reinforced mixed felt 20: noise preventing material
30: 2 engine cover 40: finishing fused portion
50: high-frequency heat-

Claims (12)

삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 폴리프로필렌(PP, polypropylene) 펠트(felt)를 1차적으로 제조하는 폴리프로필렌 펠트 제조단계(S10);
pet(폴리에틸렌 테레프탈레이트, polyethylene terephthalate)와 LM 화이바(fiber)를 니들 펀칭하여 결속에 의해 보강혼합 되도록 하는 pet와 LM 화이바 제조단계(S20);
상기 폴리프로필렌(PP) 펠트와 결속된 pet 및 LM 화이바를 공급하여 900∼1,500g/㎡의 중량이 되도록 결속시켜 보강혼합 펠트(10)를 성형하는 폴리프로필렌 펠트와 pet 및 LM 화이바 결속으로 보강혼합 펠트 제조단계(S30);
보강혼합 펠트(10)를 오븐 MC에 자동 투입시켜 예열하는 보강혼합 펠트 예열단계(S40);
몰드에서 프레스 압력을 가함으로써 냉각 성형으로 정해진 제품을 얻어 외곽 라인을 커팅하는 몰드 냉각 성형단계(S50);
필요한 모양으로 컷팅하며 선단의 마감 융착부(40)을 따라서 열 융착이 이루어지도록 하는 노이즈 방지재 제조단계(S60); 및
상기 보강혼합 펠트(10)의 상측에 노이즈 방지재(20)를 공급하여 성형상태에 따른 위치로 결합하고, 일정한 위치에서 고주파 열 융착부(50)를 통하여 접합하는 것으로 2중 엔진커버(30)를 성형하는 보강혼합 펠트에 노이즈 방지재 고주파 열 융착 접착단계(S70); 를 포함하는 자동차용 2중 엔진 커버 노이즈 방지재의 제조방법.
A step (S10) of producing a polypropylene felt to primarily produce a polypropylene (PP) felt;
pet and LM fiber fabrication step (S20) in which PET (polyethylene terephthalate) and LM fiber are needle-punched to be reinforced and mixed by binding;
The pet and LM fiber bonded to the polypropylene (PP) felt were fed to bind the PET and LM fibers to a weight of 900 to 1,500 g / m < 2 > to form a reinforced mixed felt 10, A felt manufacturing step (S30);
A reinforcing mixing felt preheating step (S40) in which the reinforcing mixing felt 10 is automatically charged into the oven MC to preheat;
A mold cooling forming step (S50) of obtaining a product determined by cold forming by applying a press pressure in the mold and cutting the contour line;
(S60) a step of cutting the material into a desired shape and performing heat fusion along the finishing fused portion 40 of the tip; And
The noise preventing member 20 is supplied to the upper side of the reinforced mixing felt 10 to be joined at a position corresponding to the molding state and joined at a predetermined position via the high frequency thermal welding portion 50, A noise-preventing material high-frequency thermal welding adhesion step (S70) to the reinforcing mixing felt for forming the reinforcing composite felt; Wherein the noise preventing member is made of a synthetic resin.
제 8항에 있어서,
상기 폴리프로필렌 펠트 제조단계(S10)는, 400∼700g/㎡의 중량과 1∼5mm의 두께, 전체 중량의 45∼55% 수준이 되도록 혼방하여 폴리프로필렌(PP, polypropylene) 펠트(felt)를 1차적으로 제조하는 것을 특징으로 하는 자동차용 2중 엔진 커버 노이즈 방지재의 제조방법.
9. The method of claim 8,
The polypropylene felt production step (S10) is performed by blending polypropylene (PP) felt at a weight of 400 to 700 g / m 2 and a thickness of 1 to 5 mm at a level of 45 to 55% Wherein the antistatic agent is manufactured by a conventional method.
제 8항에 있어서,
상기 pet와 LM 화이바 제조단계(S20)는, 전체 펠트 중량의 45∼55%가 되도록 하되; 이중 LM 화이바는 38∼42% 정도가 되며 중량이 500∼800g/㎡이 되도록 하고, pet(폴리에틸렌 테레프탈레이트, polyethylene terephthalate)와 LM 화이바(fiber)를 니들 펀칭하여 결속에 의해 보강혼합 되도록 하는 것을 특징으로 하는 자동차용 2중 엔진 커버 노이즈 방지재의 제조방법.
9. The method of claim 8,
The pet and the LM fiber manufacturing step (S20) are made to be 45 to 55% of the total felt weight; The double LM fiber is about 38 to 42% in weight and has a weight of 500 to 800 g / m 2. The PET (polyethylene terephthalate) and LM fiber are needle-punched to be reinforced and mixed by binding Wherein the method comprises the steps of:
제 8항에 있어서,
상기 보강혼합 펠트 예열단계(S40)는, 보강혼합 펠트(10)를 180∼350℃로 40∼90초간 오븐 MC에 자동 투입시켜 예열하는 것을 특징으로 하는 자동차용 2중 엔진 커버 노이즈 방지재의 제조방법.
9. The method of claim 8,
The pre-heating step (S40) of the reinforcing mixed felt is a step of pre-heating the reinforcing mixed felt (10) by automatically feeding the reinforcing mixed felt (10) to the oven MC at 180 to 350 캜 for 40 to 90 seconds .
제 8항에 있어서,
상기 몰드 냉각 성형단계(S50)는, 1∼15℃의 온도를 유지하는 몰드에서 45∼150ton의 프레스 압력을 가함으로써 냉각 성형으로 정해진 제품을 얻어 외곽 라인을 커팅하는 것을 특징으로 하는 자동차용 2중 엔진 커버 노이즈 방지재의 제조방법.9. The method of claim 8,
The mold cooling and molding step (S50) is performed by applying a press pressure of 45 to 150 ton in a mold maintaining a temperature of 1 to 15 DEG C to obtain a product determined by cooling molding, and cutting the outline line. A method for manufacturing an engine cover noise preventing member.
KR1020160094218A 2016-07-25 2016-07-25 2 of the engine cover noise preventing material and a manufacturing method for automobiles KR101697699B1 (en)

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