KR100487993B1 - Automobile plastic seat back frame panel by injection molding process - Google Patents

Automobile plastic seat back frame panel by injection molding process Download PDF

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Publication number
KR100487993B1
KR100487993B1 KR10-2002-0059870A KR20020059870A KR100487993B1 KR 100487993 B1 KR100487993 B1 KR 100487993B1 KR 20020059870 A KR20020059870 A KR 20020059870A KR 100487993 B1 KR100487993 B1 KR 100487993B1
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South Korea
Prior art keywords
seat back
back frame
injection molding
plastic
frame panel
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KR10-2002-0059870A
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Korean (ko)
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KR20040029566A (en
Inventor
이시호
김정환
민경봉
이용철
이명재
김군협
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에코플라스틱 주식회사
주식회사 엘지화학
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/68—Seat frames
    • B60N2/686—Panel like structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
    • B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
    • B60N2/4228—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the rear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Seats For Vehicles (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

본 발명은 자동차 뒷 좌석의 형상을 유지하고 승객의 안전을 보호하는 목적으로 사용되는 자동차 시트백 프레임을 사출성형 공법을 적용하여 플라스틱 시트백 프레임을 제공하기 위한 것으로서, 구체적으로는 자동차 시트 장치의 일부분인 시트백 프레임(seat back Frame)의 중량감소와 원가절감을 달성하기 위한 방안으로 플라스틱(Plastic) 재료를 사용함에 있어서, 낮은 제조 원가로 대량 생산이 가능하도록 열가소성 유리 장섬유 강화 복합재료를 사용하여 사출성형 공법을 적용한 본 발명의 시트백의 프레임 판넬은 화물 충돌시 뒤틀림이나 깨짐 현상이 발생되지 않는 최적 두께와 형상을 가지며, 플라스틱 시트백 프레임이 차체 BIW(Body In White)와 조립 될 때, 강도 상 가장 취약한 부위인 힌지(Hinge)와 래치(Latch) 부위에 강철(Steel)을 삽입(Insert)하여 플라스틱 시트백 프레임의 충돌 성능을 만족할 수 있게 한 것이다.The present invention is to provide a plastic seat back frame by applying the injection molding method to the car seat back frame used for maintaining the shape of the back seat of the car and to protect the safety of passengers, specifically, a seat back that is part of the car seat device In order to achieve weight reduction and cost reduction of the seat back frame, the injection molding method using thermoplastic glass filament-reinforced composite material to enable mass production at low manufacturing cost in using plastic material The frame panel of the seatback of the present invention to which the present invention is applied has an optimum thickness and shape that does not cause warping or cracking during cargo collision, and when the plastic seatback frame is assembled with the body BIW (Body In White), it is the most vulnerable part in strength. Insert steel into hinge and latch area to insert plastic The collision performance of the seatback frame can be satisfied.

Description

사출성형공법에 의한 유리 장섬유 강화 복합소재 적용 자동차 플라스틱 시트백 프레임 판넬 {Automobile plastic seat back frame panel by injection molding process}Automotive plastic seat back frame panel by injection molding process Application of glass long fiber reinforced composite material by injection molding method

자동차 시트백장치에서의 새로운 유럽 법규인 ECE 17.07와 EEC 76.115은 자동차 화물칸에서의 화물(Luggage)이 고정되어 지지 않은 상태에서 운행 중, 차량 급정거 시에 화물이 쏠려 뒷 좌석을 타격할 때, 충분한 강성을 지니므로 승객을 보호하는 기능을 가져야 된다는 자동차 안전법규로써, 도 1에서와 같이 시트백 프레임은 화물에 의한 충격 하중에 파손 되어지지 않아야 한다. 따라서, 대부분의 시트백 프레임의 재료는 스틸(Steel)로 구성되어 있어 차량 중량 증가에 따른 연비 감소를 초래하고 있으며, 최근까지의 플라스틱화의 사례로는 충격 강화용 합성수지인 그라스 매트 써모플라스틱(GMT) 재료를 사용한 시트백 프레임이 한국특허 등록번호 제340964호에 알려져 있지만 프레스 공법을 적용해야 하는 까닭에 복잡한 가공 공정에 의해 제조 원가가 뿐아니라, 재활용이 거의 불가능한 단점으로 인해 사실상 시트백 프레임의 플라스틱화가 불가능하였다. 그러나, 본 발명을 활용할 경우에는 대량생산에 따른 원가절감이 가능한 플라스틱 성형 공정인 사출 성형 공법을 적용할 수 있으므로, 시트 백 프레임의 본격적인 플라스틱화를 달성할 수 있게 되어 차량 중량감소에 의한 연비 향상과 원가절감이 가능해 진다. New European legislation on car seatback systems, ECE 17.07 and EEC 76.115, provide sufficient stiffness when the luggage is hit by the load in the event of a sudden stop while the car is in the unloaded position. As a vehicle safety law that must have a function to protect passengers, as shown in Figure 1, the seat back frame should not be damaged by the impact load caused by the cargo. Therefore, most of the seat back frame is made of steel, which leads to a reduction in fuel efficiency due to the increase in the weight of the vehicle. As a recent example of plasticization, glass mat thermoplastic (GMT), an impact-reinforced synthetic resin, has been used. Although the seatback frame using the material is known from Korean Patent Registration No. 340964, the press method should be applied, which makes it impossible to plasticize the seatback frame due to the fact that it is not only a manufacturing cost by a complicated machining process, but also almost impossible to recycle. . However, when the present invention is utilized, since the injection molding method, which is a plastic molding process capable of cost reduction according to mass production, can be applied, it is possible to achieve full plasticization of the seat back frame, thereby improving fuel economy by reducing vehicle weight and Cost reduction is possible.

본 발명에서는 자동차 시트백 프레임의 판넬부 형상을 사출성형공법이 적용 가능한 소재인 유리 장섬유 강화 소재에 적합하도록 두께와 형상을 최적화함으로써 화물의 충격에 파손되지 않도록 하였으며, 차체와의 조립 부분인 힌지(Hinge)와 래치(Latch) 부위에 스틸 인서트 부품을 삽입함으로써, 화물 충격시 최대 취약 부위의 강도를 보강하여 충격 성능을 만족하여 파손을 방지하는데 그 목적이 있다.In the present invention, by optimizing the thickness and shape of the panel portion of the car seatback frame to be suitable for glass long-fiber reinforcement material that is applicable to the injection molding method, it is not damaged by the impact of the cargo, the hinge ( By inserting the steel insert parts into the hinges and latches, the purpose is to prevent the damage by satisfying the impact performance by reinforcing the strength of the most vulnerable part during cargo impact.

이를 위하려는 화물이 플라스틱 시트백 프레임에 충돌시, 시트백 프레임에 분포되는 응력을 예측하여야 하고 스틸 인서트물을 시트백 프레임 성형 후에 삽입할 수 있도록 하여야 한다.If the cargo intended to do so impinges on the plastic seatback frame, the stresses to be distributed in the seatback frame must be predicted and the steel inserts can be inserted after the seatback frame is molded.

본 발명은 자동차 시트백 프레임을 제조함에 있어 경량화와 원가절감이 가능하도록 사출성형 공법을 적용한 플라스틱 시트백 프레임을 제공하는데 목적이 있으며, 본 발명에서는 열가소성 유리 장섬유 강화 복합재료를 사용하여 사출성형공법을 적용하는 것이 바람직하다. 본 발명에서 사용하는 유리 장섬유 강화 복합 소재는 연속 유리섬유에 수지를 함침 시키는 풀트루젼(Pultrusion)공법을 이용하여, 섬유 강화 효과를 극대화한 보강 소재로서 단섬유 강화 소재 대비 강화된 섬유 길이가 통상 10배 이상 길어서 월등한 기계적 강도와 높은 탄성율을 가지고 있다. 또한, 우수한 기계적 열적 특성과 함께 열가소성 수지의 장점인 저비중 특성과 성형가공성이 우수한 장점을 지닌다.An object of the present invention is to provide a plastic seat back frame to which the injection molding method is applied in order to reduce the weight and cost in manufacturing an automobile seat back frame, and in the present invention, the injection molding method using the thermoplastic glass long fiber reinforced composite material is applied. It is desirable to. The glass long fiber reinforced composite material used in the present invention is a reinforcing material maximizing the fiber reinforcing effect by using the Pultrusion method of impregnating the resin in the continuous glass fiber, the fiber length is reinforced compared to the short fiber reinforced material It is usually 10 times longer and has superior mechanical strength and high elastic modulus. In addition, it has the advantages of low specific gravity and molding processability, which are advantages of thermoplastic resins, together with excellent mechanical and thermal properties.

장섬유 강화 소재의 탁월한 기계적 물성과 내구성은 비교적 길이가 긴 장섬유가 강화제로 작용하기 때문이며 이는 독특한 제조공정에 의해 가능 하다. 일반적인 유리 섬유 보강 소재(단섬유 보강 소재)는 평균 3~5mm로 절단 된 유리 섬유가 압출기로 투입되어 수지와 함께 혼련 되는데 비해, 장섬유 강화 소재는 연속상의 섬유에 수지를 함침 다이에서 함침 시킨 후 이를 약 10~12mm의 크기로 절단하여 펠렛내의 섬유 길이가 약 10~12mm로 유지 된다. The superior mechanical properties and durability of long fiber reinforced materials is due to the fact that the longer length of long fiber acts as a reinforcing agent. In general glass fiber reinforcing material (short fiber reinforcing material), glass fiber cut to an average of 3 ~ 5mm is fed into the extruder and kneaded together with the resin, while long fiber reinforcing material is impregnated with resin in the continuous fiber This is cut to a size of about 10-12mm to maintain the fiber length in the pellets about 10-12mm.

본 발명에 적용 된 수지 조성물은 열가소성 수지가 35~70 중량%, 플트루젼 공법에 의하여 함침된 장섬유 함량이 20~60 중량%, 열가소성 탄성체 고무 1~10 중량%로 이루어진 장섬유 복합 열가소성 수지 조성물이다.The resin composition applied to the present invention is a long fiber composite thermoplastic resin composed of 35 to 70% by weight of thermoplastic resin, 20 to 60% by weight of long fiber impregnated by the plusion method, and 1 to 10% by weight of thermoplastic elastomer rubber. Composition.

이하 본 발명의 구성 및 작용을 도면을 통하여 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described with reference to the drawings.

도 1 에서와 같이, 자동차 시트백장치에서의 새로운 유럽 법규인 ECE 17.07 테스트 규격은 차량이 뒷 방향으로 스래드(Sled) 가속도 운동을 하는 과정에 자동차 뒷 시트백(10)의 뒷 부분에 설치 되어 있는 목재(중량 18kg, 300*300*300mm) 테스트용 화물(11)이 초기속도 0km/hour에서 관성운동을 하며 뒷좌석 시트백 프레임에 충돌하게 된다. 충돌 후 차체의 최종 속도는 50km/hour로 초속도로 환산하면 13.89m/sec이다. 이 법규를 만족하는 플라스틱 시트백 프레임을 제작하기 위해서는 충격해석 전용 씨에이이(CAE) 프로그램을 사용하여 충격상황을 컴퓨터 시뮬레이션 실시하여 강도적으로 취약 부위를 파악할 수 있다.As shown in Fig. 1, the new European standard ECE 17.07 test specification for the car seatback device is based on the wood installed at the back of the car seatback 10 during the sled acceleration movement of the vehicle in the rear direction. (18kg, 300 * 300 * 300mm) The test cargo (11) will inertia at the initial speed of 0km / hour and hit the rear seat back frame. The final speed of the car after the crash is 50 km / hour, which is 13.89 m / sec. In order to manufacture a plastic seat back frame that satisfies the legislation, the impact situation can be identified by computer simulation using a CAE program dedicated to impact analysis.

도 2는 이런 충격 상황을 컴퓨터 시뮬레이션 한 결과로써, 시트백 프레임의 응력 분포를 상세히 제공하여 보강이 필요한 취약 부위를 알 수 있게 한다.FIG. 2 is a computer simulation result of such an impact situation, and provides the stress distribution of the seatback frame in detail so as to identify a weak point that needs to be reinforced.

도 3은 컴퓨터 시뮬레이션 과정을 거쳐 설계된 플라스틱 시트백 프레임의 개략도로써, 자동차 뒷 트렁크를 열면 눈으로 보이는 부분인 차량 뒷 방향에서 도시한 것이다.3 is a schematic diagram of a plastic seatback frame designed through a computer simulation process, and is shown in a rear view of a vehicle, which is visible when the rear trunk of the vehicle is opened.

도 4는 도 3의 반대 부분, 즉 자동차 전면에서 봤을 때의 시트백 프레임의 전면 개략도를 도시한 것이다.FIG. 4 shows a schematic front view of the seatback frame as seen from the opposite side of FIG. 3, ie from the front of the vehicle.

시트백 프레임의 가장자리(21)는 유(U)자 형상을 이루며 강도 유지와 변형 방지를 위해 그 사이에 리브(Rib)를 보강하였다. 이때 유(U)자 형상의 가장자리의 두께는 2.0~6.0mm이고 높이는 20~60mm 이다. 시트백 프레임 판넬의 기본 두께는 유리섬유 강화소재의 특성을 극대화하기 위해 2.0~6.0mm를 유지하고 강도 보강 목적의 리브(22) 두께는 1.5~6.0mm이며 높이는 10~50mm이다. 판넬에서의 힌지(Hinge)체결 부위에는 스틸 플랜지 너트(Steel Flange Nut)(24)를 사출 성형 공정 중에 삽입하여 힌지조립에 필요한 공정을 삭제하고 힌지 조립 부분의 강도를 강화 시켰다. The edge 21 of the seat back frame has a U-shape and reinforces ribs therebetween to maintain strength and prevent deformation. At this time, the thickness of the U-shaped edge is 2.0 ~ 6.0mm and the height is 20 ~ 60mm. The basic thickness of the seat back frame panel is to maintain 2.0 ~ 6.0mm to maximize the properties of the glass fiber reinforced material, the thickness of the rib 22 for strength reinforcement is 1.5 ~ 6.0mm and the height is 10 ~ 50mm. Steel flange nuts (24) were inserted into the hinge joints in the panel during the injection molding process, eliminating the steps required for hinge assembly and strengthening the strength of the hinge assembly.

래치(Latch)는 시트백 프레임을 차체에 쉽게 조립할 수 있도록 원 타치(one touch) 설계가 되어 있는 스틸 부품으로 도 3과 같이 시트백 프레임에 결합되며, 스틸인서트물(도 8)을 시트백 프레임 성형후에 래치(Latch)조립 부위에 삽입함으로써 화물 충돌시의 플라스틱 시트백 프레임의 깨짐문제를 근본적으로 대비 할 수 있게 하였다. 본 발명과 같은 구조로 사출 시트백 프레임을 구성할 경우에는, ECE 17.07의 신규 차량 안전 법규에서 지정하는 50km/hour의 속도에서도 화물의 충격하중에 플라스틱 시트백 프레임은 깨짐 현상이 발생되지 않고 성능을 만족하여 실제로 차량에 적용할 수 있게 된다.A latch is a steel part that is designed to be one touch to easily assemble a seatback frame to a vehicle body. The latch is coupled to the seatback frame as shown in FIG. 3, and the steel insert (FIG. 8) is latched after forming the seatback frame. (Latch) By inserting into the assembly area, it is possible to fundamentally prepare for the problem of plastic seat back frame breakage during cargo collision. When the injection seatback frame is constructed with the same structure as the present invention, even at a speed of 50 km / hour specified by the new vehicle safety regulations of ECE 17.07, the plastic seatback frame does not break under the impact load of the cargo and satisfies the performance. In fact, it can be applied to vehicles.

본 발명을 자동차 플라스틱 시트백 프레임 제조 시에 적용하면, 스틸 대체에 따른 중량감소를 실현함으로써 자동차 연비향상에 기여할 수 있고, 복잡한 공정을 거쳐 제조되는 합성수지인 그라스 매트 써모플라스틱(GMT) 재료를 사용한 시트백 프레임을 사출성형 공법에 의한 열가소성 플라스틱으로 제조 가능함으로 대량 생산에 의한 원가 절감을 실현할 수 있다.When the present invention is applied to manufacturing a plastic seat back frame, the seat back frame using glass mat thermoplastic (GMT) material, which is a synthetic resin produced through a complex process, can contribute to the improvement of fuel efficiency of automobiles by realizing weight reduction according to steel replacement. Can be manufactured into a thermoplastic plastic by the injection molding method, it is possible to realize cost reduction by mass production.

도 1은 시트백 프레임 관련 새로운 유럽 법규(ECE 17.07)에 따른 테스트 규격이다.1 is a test standard according to the new European legislation (ECE 17.07) relating to seatback frames.

도 2는 ECE 17.07 테스트 규격에 따른 CAE 충격해석 결과이다.2 is a CAE impact analysis results according to the ECE 17.07 test standard.

도 3은 본 발명이 채택된 플라스틱 시트백 프레임의 후면 개략도이다.3 is a schematic rear view of a plastic seatback frame incorporating the present invention.

도 4는 본 발명이 채택된 플라스틱 시트백 프레임의 전면 개략도이다.4 is a front schematic view of a plastic seatback frame to which the present invention is employed.

도 5는 도 4에서의 판넬 가장자리 유(U)자 형상의 단면이다.5 is a cross-sectional view of the panel edge U-shaped in FIG.

도 6은 도 4에서의 판넬 주요 리브(Rib) 부분의 단면이다.FIG. 6 is a cross-sectional view of the panel main rib portion in FIG. 4. FIG.

도 7은 도 4에서의 힌지 결합부위에 스틸 플랜지 너트(Steel Flange Nut)가 설치된 개략도이다.FIG. 7 is a schematic view illustrating a steel flange nut installed at the hinge coupling part of FIG. 4.

도 8은 도 4에서의 래치(Latch) 결합부위에 설치되는 스틸 인서트 부품 개략도이다.FIG. 8 is a schematic view of a steel insert component installed at the latch engagement portion of FIG. 4. FIG.

도 9는 판넬의 또다른 실시 형태로 주름 단면 형상을 갖는 사출 시트백 프레임의 개략도이다.9 is a schematic view of an injection seatback frame having a corrugated cross-sectional shape in another embodiment of a panel.

도 10은 도 9의 주요 단면을 개략적으로 도시한 것이다.FIG. 10 schematically illustrates the main cross section of FIG. 9.

도 11은 힌지 체결부에 결합되는 스틸 플렌지 너트의 사시도이다 11 is a perspective view of a steel flange nut coupled to a hinge fastener;

<도면의 주요 부분에 대한 설명>Description of the main parts of the drawing

10 : 자동차 뒷 시트백 11 : 테스트용 화물10: Car rear seatback 11: Test cargo

20 : 플라스틱 시트백 프레임 21 : 유(U)자 형상 가장자리 20: plastic seat back frame 21: U-shaped edge

22 : 리브(Rib) 23 : 힌지 (Hinge)22: Rib 23: Hinge

24 : 힌지 체결부 스틸 플랜지 너트 25 : 래치 (Latch) 24: Hinge fastening steel flange nut 25: Latch

Claims (4)

유리 장섬유 강화 복합소재를 사용하여 사출성형 공법으로 제작되고, 시트백 프레임 판넬의 가장자리 부분이 U(유)자 단면 형상을 이루고 있고, 상기 U(유)자 단면을 갖는 판넬 가장자리 사이에 강도 및 변형 방지 목적으로 리브(Rib)를 설치하며,It is manufactured by injection molding process using glass long-fiber reinforced composite, and the edge part of the seat back frame panel has a U-shaped cross section, and the strength and deformation between panel edges having the U-shaped cross section. Rib is installed for the purpose of prevention, 판넬에서의 힌지 결합부위에는 사출성형공정 중에 삽입되는 아이(I)자형 스틸 플렌지 너트를 갖고, 래치 결합부위에는 시트백 프레임 성형후 삽입되는 스틸 인서트 부품을 갖는 것을 특징으로 하는 자동차 플라스틱 시트백 프레임 판넬.An automobile plastic seatback frame panel having an eye (I) shaped steel flange nut inserted into the hinge coupling part of the panel during the injection molding process and a steel insert part inserted into the latch coupling part after molding the seatback frame. 제 1항에 있어서, 상기 시트백 프레임 판넬의 가장자리 부분이 두께 2.0 내지 6.0 ㎜, 높이 20 내지 60 ㎜의 U(유)자 단면 형상을 이루고 있는 것을 특징으로 하는 자동차 플라스틱 시트백 프레임 판넬.The vehicle plastic seat back frame panel according to claim 1, wherein the edge portion of the seat back frame panel has a U-shaped cross-sectional shape having a thickness of 2.0 to 6.0 mm and a height of 20 to 60 mm. 제 2항에 있어서, 시트백 프레임 판넬의 기본 두께가 2.0~6.0mm 이고 리브(Rib)의 크기가 두께 1.5~6.0mm, 높이 10~50mm인 자동차 플라스틱 시트백 프레임 판넬.3. The automobile plastic seat back frame panel according to claim 2, wherein the seat back frame panel has a basic thickness of 2.0 to 6.0 mm and a rib size of 1.5 to 6.0 mm and a height of 10 to 50 mm. 제 1항 내지 제 3항중 어느 한항에있어서, 사출성형공법에 사용되는 플라스틱의 재질이 열가소성 유리 장섬유 강화 복합 소재로서, 그 조성이 열가소성 수지 35~70 중량%, 유리 장섬유 20~60 중량%, 열가소성 탄성체 고무 1~10 중량%로 구성되어 있는 것을 특징으로 하는 자동차 플라스틱 시트백 프레임 판넬. The method of any one of claims 1 to 3, wherein the plastic material used in the injection molding method is a thermoplastic glass filament reinforced composite material, the composition of which is 35 to 70% by weight of thermoplastic resin and 20 to 60% by weight of glass filament. Automotive thermoplastic seat back frame panel, characterized in that composed of 1 to 10% by weight of thermoplastic elastomer rubber.
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KR20160071199A (en) 2014-12-11 2016-06-21 현대자동차주식회사 Hybrid composite for vehicle seat frame
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