KR20230018772A - Vehicle Trunk Center Under Tray For Vehicle and manufacturing method thereof - Google Patents

Vehicle Trunk Center Under Tray For Vehicle and manufacturing method thereof Download PDF

Info

Publication number
KR20230018772A
KR20230018772A KR1020210100689A KR20210100689A KR20230018772A KR 20230018772 A KR20230018772 A KR 20230018772A KR 1020210100689 A KR1020210100689 A KR 1020210100689A KR 20210100689 A KR20210100689 A KR 20210100689A KR 20230018772 A KR20230018772 A KR 20230018772A
Authority
KR
South Korea
Prior art keywords
fiber
sound
layer
weight
parts
Prior art date
Application number
KR1020210100689A
Other languages
Korean (ko)
Other versions
KR102558807B1 (en
Inventor
조성진
박창석
김정
Original Assignee
원풍물산주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 원풍물산주식회사 filed Critical 원풍물산주식회사
Priority to KR1020210100689A priority Critical patent/KR102558807B1/en
Publication of KR20230018772A publication Critical patent/KR20230018772A/en
Application granted granted Critical
Publication of KR102558807B1 publication Critical patent/KR102558807B1/en

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/22Layered 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
    • B32B5/24Layered 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
    • B32B5/26Layered 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
    • B32B5/265Layered 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 characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266Layered 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 characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/22Layered 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
    • B32B5/24Layered 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
    • B32B5/26Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/02Layered 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
    • B32B5/022Non-woven fabric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered 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
    • B32B5/02Layered 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
    • B32B5/06Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/01Liners for load platforms or load compartments
    • B60R13/011Liners for load platforms or load compartments for internal load compartments, e.g. car trunks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08Insulating elements, e.g. for sound insulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02Synthetic macromolecular fibres
    • B32B2262/0276Polyester fibres
    • B32B2262/0284Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14Mixture of at least two fibres made of different materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/10Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102Insulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00Vehicles
    • B32B2605/08Cars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60YINDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00Other features of vehicle sub-units
    • B60Y2306/09Reducing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

According to the present invention, a vehicle trunk center under tray stack comprises: a skin layer (1) which is formed of non-woven fabric made of polyethylene terephthalate (PET) fiber; a sound absorbing layer (2) which is formed of non-woven fabric made of polyethylene terephthalate (PET) fiber, low melting point fiber (LMF), and hollow fibers; and a sound insulating layer (3) which is formed of non-woven fabric made of polyethylene terephthalate (PET) fiber, low melting point fiber (LMF), and polypropylene (PP) fiber. Therefore, a manufacturing process is simplified since the skin layer and the sound absorbing layer are laminated through single needle punching, and then the laminate obtained thereafter can be manufactured through single heat bonding of the laminated skin layer and sound absorbing layer, and the sound insulating layer.

Description

차량 트렁크 센터 언더 트레이 적층체 및 그 제조방법{Vehicle Trunk Center Under Tray For Vehicle and manufacturing method thereof}Vehicle trunk center under tray laminate and manufacturing method thereof

본 발명은 차량의 트렁크 안쪽에 장착되어 공구키트가 수납되는 차량용 트렁크 센터 언더 트레이 적층체 및 그 제조방법에 관한 것이다.The present invention relates to a trunk center under tray laminate for a vehicle mounted inside a trunk of a vehicle and storing a tool kit therein, and a method for manufacturing the same.

차량용 트렁크 센터 언더 트레이는 스페어 타이어가 수납되는 트레이다. The trunk center under tray for vehicles is a tray for storing spare tires.

최근 국내 도로에서 언제 어디서나 긴급출동서비스 등을 부르기 쉬어지고, 스페어 타이어가 20kg 이상 무게가 나가는 탓에 자주 사용하지 않는 스페어 타이어를 장착함으로 인해 불필요한 연료가 소비되며, 스페어 타이어가 없으면 공간 활용성이 높아진다는 정점 등이 반영되어 긴급구조 키트가 들어가는 공구키트를 수납하는 공구박스로 변경되고 있다.Recently, it is easy to call emergency road service anytime, anywhere on domestic roads, and since a spare tire weighs more than 20 kg, unnecessary fuel is consumed due to the installation of a spare tire that is not used frequently, and space utilization is increased without a spare tire. is being changed to a tool box that stores a tool kit containing an emergency rescue kit by reflecting vertices.

종래의 스페어 타이어 수납용 차량용 트렁크 센터 언더 트레이는 도 1과 같은 구성과 재질을 갖고 있다.A conventional trunk center under tray for a vehicle for accommodating a spare tire has the same configuration and material as shown in FIG. 1 .

도 1의 종래의 차량용 트렁크 센터 언더 트레이 적층체는 표피층인 부직포(200g/m2), 차음중간층의 PP시트(1400g/m2), 이면층인 난연부직포(30g/m2), 흡음층인 스펀본드부직포+멜트블로우+스펀본드부직포의 3층구조(300g/m2)의 총 1930g/m2의 중량으로 이루어져 있다.The conventional vehicle trunk center under tray laminate of FIG. 1 includes a nonwoven fabric (200g/m 2 ) as a skin layer, a PP sheet (1400g/m 2 ) as a sound insulation intermediate layer, a flame retardant nonwoven fabric (30g/m 2 ) as a back layer, and a sound absorbing layer It consists of a total weight of 1930 g/m 2 of a three-layer structure (300 g/m 2 ) of spunbond nonwoven fabric + melt blown + spunbond nonwoven fabric.

종래의 차량용 트렁크 센터 언더 트레이는 강성을 유지하기 위하여 사출 또는 압출품인 PP 시트를 사용함으로써 차음성은 있으나, 트렁크 센터 언더 트레이를 우회하여 차량실내로 도달하는 소음에 대하여는 취약하여, PP 시트의 상부에 부직포의 표피층와 하부에 이면층인 난연부직포, 3층 구조의 흡읍층로 구성되어 있었다. 다시 설명하면, 흡음층, 차음층, 이면층, 흡음층의 구조로 이루어져 있다.The conventional trunk center under tray for vehicles has sound insulation by using an injection or extruded PP sheet to maintain rigidity, but is vulnerable to noise that bypasses the trunk center under tray and reaches the vehicle interior. It was composed of a non-woven skin layer, a flame retardant non-woven fabric as a back layer at the bottom, and an absorption layer with a three-layer structure. In other words, it consists of a sound-absorbing layer, a sound-insulating layer, a back layer, and a sound-absorbing layer.

종래의 차량용 트렁크 센터 언더 트레이는 상기 구조로 이루어져 있어 중량이 무겁고, PP 시트로 인하여 취성이 높아 파손될 우려가 크며 스페어 타이어의 제거로 이격소음이 생기는 문제가 있다.A conventional vehicle trunk center undertray has the above structure, so it is heavy, has high brittleness due to the PP sheet, and is highly susceptible to breakage.

차량용 트렁크 센터 언더 트레이는 트렁크 외부 소음, 노면 등으로부터 흘러들어오는 소음 및 진동 등을 감소시키는 역할이 동시에 요구되는 차량 부품이다.The trunk center under tray for a vehicle is a vehicle part that simultaneously reduces external noise from the trunk and noise and vibration from the road surface.

본 출원인은 차음중간층을 PP시트(1400g/m2)에서 흡음층인 부직포로 변경하고, 종래의 이면층을 제거하여 경량성을 향상시키되, 형태유지를 위한 강성을 갖는 부직포 적층체를 개발하고 본 발명을 완성하였다.The present applicant changes the sound insulation intermediate layer from a PP sheet (1400 g / m 2 ) to a non-woven fabric, which is a sound-absorbing layer, and improves lightness by removing the conventional back layer, but develops a non-woven fabric laminate having rigidity for maintaining shape. The invention was completed.

특허문헌1; 대한민국 등록특허공보 등록번호10-0451400호Patent Document 1; Republic of Korea Registered Patent Registration No. 10-0451400

본 발명은 종래의 스페어 타이어 장작되던 트렁크 구조에서 스페어 타이어를 제거하고, 공구 키트가 수납되는 공구박스형태로 변경되는 차량용 트렁크 센터 언더 트레이 적층체 및 그 제조방법의 제공하는데 있다.An object of the present invention is to provide a trunk center under tray laminate for a vehicle and a method for manufacturing the same, in which a spare tire is removed from a conventional trunk structure in which a spare tire is mounted, and the tool kit is changed to a tool box shape.

본 발명의 차량 트렁크 센터 언더 트레이 적층체는 폴리에틸렌테레프탈레이트(PET) 섬유로 이루어진 부직포인 표피층(1)과, 폴리에틸렌테레프탈레이트(PET) 섬유, 저융점 섬유(LMF), 중공사 섬유로 이루어진 부직포인 흡음층(2)과, 폴리에틸렌테레프탈레이트(PET) 섬유, 저융점 섬유(LMF), 폴리프로필렌(PP) 섬유로 이루어진 부직포인 차음층(3)로 이루어진다.The vehicle trunk center under tray laminate of the present invention is a skin layer 1, which is a nonwoven fabric made of polyethylene terephthalate (PET) fiber, and a nonwoven fabric made of polyethylene terephthalate (PET) fiber, low melting point fiber (LMF), and hollow fiber fiber. It consists of a sound absorption layer 2 and a sound insulation layer 3 which is a nonwoven fabric made of polyethylene terephthalate (PET) fibers, low melting point fibers (LMF), and polypropylene (PP) fibers.

본 발명의 차량 트렁크 센터 언더 트레이 적층체에서, 상기 흡음층(2)은 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부와 저융점 섬유(LMF) 15 ~ 25중량부 및 중공사 섬유 45 ~ 55중량부로 조성된 부직포이고, 차음층(3)은 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부 및 저융점 섬유(LMF) 35 ~ 45중량부, 폴리프로필렌(PP) 섬유 25 ~ 35 중량부로 조성된다.In the vehicle trunk center under tray laminate of the present invention, the sound absorbing layer 2 includes 25 to 35 parts by weight of polyethylene terephthalate (PET) fiber, 15 to 25 parts by weight of low melting point fiber (LMF), and 45 to 55 parts by weight of hollow fiber. It is a nonwoven fabric composed of parts by weight, and the sound insulation layer 3 is composed of 25 to 35 parts by weight of polyethylene terephthalate (PET) fibers, 35 to 45 parts by weight of low melting point fibers (LMF), and 25 to 35 parts by weight of polypropylene (PP) fibers. do.

본 발명의 차량 트렁크 센터 언더 트레이 적층체에서 상기 표피층(1)은 면밀도 150 ~ 200g/m2 이고, 흡음층(2)은 면밀도 1000 ~ 1200g/m2 이고, 차음층(3)은 면밀도 180 ~ 220g/m2 이다.In the vehicle trunk center under tray laminate of the present invention, the skin layer (1) has an areal density of 150 to 200 g/m 2 , the sound-absorbing layer (2) has an areal density of 1000 to 1200 g/m 2 , and the sound insulation layer (3) has an areal density of 180 to 1200 g/m 2 . 220 g/m 2 .

본 발명의 차량 트렁크 센터 언더 트레이 적층체에서 표피층(1)과 차음층(3)의 밀도는 흡음층(2)의 밀도에 비하여 상대적으로 고밀도이다.In the vehicle trunk center under tray laminate of the present invention, the skin layer 1 and the sound insulating layer 3 have a relatively high density compared to the sound absorbing layer 2 .

본 발명의 차량 트렁크 센터 언더 트레이 적층체에서 상기 표피층(1)의 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 6데니어이고, 상기 흡음층(2)의 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 10데니어, 저융점 섬유(LMF)는 3 ~ 6데니어, 중공사 섬유는 3 ~ 10데니어이며, 차음층(3)의 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 6데니어, 저융점 섬유(LMF)는 3 ~ 6데니어, 폴리프로필렌(PP) 섬유는 3 ~ 6데니어이다.In the vehicle trunk center under tray laminate of the present invention, the polyethylene terephthalate (PET) fiber of the skin layer 1 is 3 to 6 denier, and the polyethylene terephthalate (PET) fiber of the sound absorption layer 2 is 3 to 10 denier. , low melting point fiber (LMF) is 3 to 6 denier, hollow fiber fiber is 3 to 10 denier, polyethylene terephthalate (PET) fiber of the sound insulation layer (3) is 3 to 6 denier, low melting point fiber (LMF) is 3 ~ 6 denier, polypropylene (PP) fibers are 3 to 6 denier.

본 발명의 차량 트렁크 센터 언더 트레이 적층체의 제조방법은, a) 폴리에틸렌테레프탈레이트(PET) 섬유를 면밀도 150 ~ 200g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭하여 표피층(1)을 얻는 제 1 공정과, b) 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부와 저융점 섬유(LMF) 15 ~ 25중량부 및 중공사 섬유 45 ~ 55중량부를 면밀도 1000 ~ 1200g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭하여 흡음층(2)을 얻는 제 2 공정 및, c) 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부 및 저융점 섬유(LMF) 35 ~ 45중량부, 폴리프로필렌(PP) 섬유 25 ~ 35 중량부를 면밀도 180 ~ 220g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭하여 차음층(3)을 얻는 제 3 공정과, d) 제 1 공정에 얻어진 표피층과 제 2 공정에서 얻어진 흡음층(2)을 적층하여 니들펀니칭에 의해 합지하는 제 4 공정과, e) 제 4 공정에서 얻어진 표피층(1)과 대면하지 않는 흡음층(2)을 가열하여 제 3 공정에서 얻어진 차음층(3)과 결합하는 제 5 공정을 포함한다.A method for manufacturing a vehicle trunk center under tray laminate of the present invention includes a) dispersing polyethylene terephthalate (PET) fibers with an areal density of 150 to 200 g/m 2 to form a web, and then needle punching to obtain a skin layer (1). In step 1, b) 25 to 35 parts by weight of polyethylene terephthalate (PET) fiber, 15 to 25 parts by weight of low melting point fiber (LMF), and 45 to 55 parts by weight of hollow fiber fiber are dispersed at a surface density of 1000 to 1200 g/m 2 After forming the web, the second step of needle punching to obtain the sound absorbing layer 2, and c) 25 to 35 parts by weight of polyethylene terephthalate (PET) fibers and 35 to 45 parts by weight of low melting point fibers (LMF), polypropylene 25 to 35 parts by weight of (PP) fibers are dispersed at an areal density of 180 to 220 g/m 2 to form a web, followed by needle punching to obtain a sound insulation layer (3); 4th process of laminating the sound-absorbing layer 2 obtained in step 2 and bonding them together by needle punching, e) 3rd process of heating the sound-absorbing layer 2 that does not face the skin layer 1 obtained in the 4th step A fifth step of bonding with the sound insulation layer 3 obtained in

상기 표피층(1)과 차음층(3)의 밀도는 흡음층(2)의 밀도에 비하여 상대적으로 고밀도가 되도록 니들펀칭횟수가 많은 것을 특징으로 차량 트렁크 센터 언더 트레이 적층체의 제조방법.The density of the skin layer (1) and the sound insulation layer (3) is relatively high compared to the density of the sound absorption layer (2), characterized in that the number of needle punching is high, characterized in that the vehicle trunk center under tray laminate manufacturing method.

상기 제 1 공정에서의 니들펀칭횟수가 니들펀칭횟수가 200 ~ 300 PPSC(Punching Per Square cm)범위이고, 제 2 공정에서의 니들펀칭횟수가 100 ~ 200 PPSC(Punching Per Square cm)범위이고, 제 3 공정에서의 니들펀칭횟수가 200 ~ 300 PPSC(Punching Per Square cm)범위에서 제조된다.The number of needle punching in the first process is in the range of 200 to 300 PPSC (Punching Per Square cm), the number of needle punching in the second process is in the range of 100 to 200 PPSC (Punching Per Square cm), The number of needle punches in step 3 is manufactured in the range of 200 to 300 PPSC (Punching Per Square cm).

상기 흡음층(2)과 차음층(3)의 구성성분인 저융점 섬유(LMF)는 용융온도는 130 ~ 180℃의 용융온도와 폴리에틸렌테레프탈레이트(PET) 소재이다.The low-melting fiber (LMF), which is a component of the sound-absorbing layer 2 and the sound-insulating layer 3, has a melting temperature of 130 to 180 ° C and a polyethylene terephthalate (PET) material.

상기 흡음층(2)을 형성하는 상기 흡음층(2)의 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 10데니어, 저융점 섬유(LMF)는 3 ~ 6데니어, 중공사 섬유는 3 ~ 10데니어이며, 섬유장은 각각 51 ~ 64㎜의 섬유를 카딩, 웹형성 및 웹결합에 의해 제조된 것이고, 웹결합은 니들펀칭에 의한 웹결합이 바람직하며 표면이 부드러운 질감을 나타내는 벨루어 타입(velour-type) 부직포가 바람직하다.The polyethylene terephthalate (PET) fiber of the sound-absorbing layer 2 forming the sound-absorbing layer 2 is 3 to 10 denier, the low melting point fiber (LMF) is 3 to 6 denier, and the hollow fiber fiber is 3 to 10 denier, , The fiber length is manufactured by carding, web forming, and web bonding of fibers of 51 to 64 mm, respectively, and the web bonding is preferably web bonding by needle punching, and the surface is a velor-type nonwoven fabric showing a soft texture. is preferable

본 발명의 차량 트렁크 센터 언더 트레이 적층체 및 그 제조방법은 표피층의 고밀도부직포, 흡음층의 저밀도부직포, 차음층의 고밀도보직포를 순차적으로 결합시켜 종래 의차량 트렁크 센터 언더 트레이 적층체보다 20% 이상 경량화시키고, 흡음성능과 차음성능은 동등한 수준의 차량 트렁크 센터 언더 트레이 적층체를 제조할 수 있고, 표피층과 흡은층을 1회의 니들펀칭으로 합지하고, 이후 합지된 표피층과 흡음층과 차음층을 1회의 가열 접합만으로 적층체를 제조할 수 있어 제조공정이 단순화된다.The vehicle trunk center under tray laminate and method for manufacturing the same according to the present invention sequentially combine a high-density non-woven fabric for a skin layer, a low-density non-woven fabric for a sound-absorbing layer, and a high-density non-woven fabric for a sound insulation layer, so that the weight is reduced by 20% or more compared to the conventional vehicle trunk center under tray laminate. It is possible to manufacture a vehicle trunk center undertray laminate that is lightweight and has equivalent sound absorption and sound insulation performance, and the skin layer and the absorption layer are laminated with one needle punch, and then the laminated skin layer, sound absorption layer and sound insulation layer are formed. A laminate can be manufactured with only one heat bonding, which simplifies the manufacturing process.

도 1은 종래기술에 따른 차량 트렁크 센터 언더 트레이적층체의 다층구조를 대략적으로 나타낸 도면
도 2는 본 발명에 따른 차량 트렁크 센터 언더 트레이 위치를 나타내는 사진
도 3은 본 발명에 따른 차량 트렁크 센터 언더 트레이 실물사진
도 4는 본 발명에 따른 차량 트렁크 센터 언더 트레이 적층체의 다층구조를 대략적으로 나타낸 도면
1 is a view schematically showing a multilayer structure of a vehicle trunk center under tray laminate according to the prior art.
Figure 2 is a photograph showing the location of the vehicle trunk center under tray according to the present invention
3 is a real picture of a vehicle trunk center under tray according to the present invention
4 is a view schematically showing a multilayer structure of a vehicle trunk center under tray laminate according to the present invention.

이하에서는 실시예 및 시험예 등에 의해 본 발명을 더욱 구체적으로 설명하겠으며, 아래 기재에 의해 본 발명이 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail by examples and test examples, but the present invention is not limited by the following description.

도 4는 본 발명에 따른 차량 트렁크 센터 언더 트레이 적층체의 다층구조를 대략적으로 나타낸 도면이다.4 is a diagram schematically illustrating a multilayer structure of a vehicle trunk center under tray laminate according to the present invention.

도 4에 개시된 본 발명의 차량 트렁크 센터 언더 트레이 적층체는 폴리에틸렌테레프탈레이트(PET) 섬유로 이루어진 부직포인 표피층(1)과, 폴리에틸렌테레프탈레이트(PET) 섬유, 저융점 섬유(LMF), 중공사 섬유로 이루어진 부직포이 흡음층(2)과, 폴리에틸렌테레프탈레이트(PET) 섬유, 저융점 섬유(LMF), 폴리프로필렌(PP) 섬유로 이루어진 부직포인 차음층(3)으로 이루어진다.The vehicle trunk center under tray laminate of the present invention disclosed in FIG. 4 includes a skin layer 1, which is a nonwoven fabric made of polyethylene terephthalate (PET) fibers, polyethylene terephthalate (PET) fibers, low melting point fibers (LMF), and hollow fiber fibers. A sound-absorbing layer (2) made of non-woven fabric and a sound-insulating layer (3) made of polyethylene terephthalate (PET) fibers, low-melting point fibers (LMF), and polypropylene (PP) fibers.

본 발명의 차량 트렁크 센터 언더 트레이 적층체에서, 상기 흡음층(2)은 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부와 저융점 섬유(LMF) 15 ~ 25중량부 및 중공사 섬유 45 ~ 55중량부로 조성된 부직포이다.In the vehicle trunk center under tray laminate of the present invention, the sound absorbing layer 2 includes 25 to 35 parts by weight of polyethylene terephthalate (PET) fiber, 15 to 25 parts by weight of low melting point fiber (LMF), and 45 to 55 parts by weight of hollow fiber. It is a nonwoven fabric composed of parts by weight.

흡음층(2)에서 폴리에틸렌테레프탈레이트(PET) 섬유는 기재로서의 기능, 중공사 섬유는 흡음기능을 갖고, 저융점 섬유는 상대적으로 낮은 온도인 130 ~ 180℃ 에서 용융되어, 폴리에틸렌테레프탈레이트(PET) 섬유와 중공사 섬유 사이를 액상으로 스며들어 결합시키는 기능을 갖는다.In the sound-absorbing layer (2), polyethylene terephthalate (PET) fibers function as a base material, hollow fiber fibers have a sound-absorbing function, and low-melting fibers are melted at a relatively low temperature of 130 to 180 ° C., polyethylene terephthalate (PET) It has a function of permeating and bonding between fibers and hollow fiber fibers in a liquid phase.

흡음층(2)에서 중공사 섬유는 45 ~ 55중량부 포함시 종래의 흡음성능과 동등의 흡음성능을 갖을 수 있다.In the sound-absorbing layer 2, the hollow fiber fibers may have sound-absorbing performance equal to that of the conventional sound-absorbing performance when included in an amount of 45 to 55 parts by weight.

차음층(3)은 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부 및 저융점 섬유(LMF) 35 ~ 45중량부, 폴리프로필렌(PP) 섬유 25 ~ 35 중량부로 조성된 부직포이다.The sound insulation layer 3 is a nonwoven fabric composed of 25 to 35 parts by weight of polyethylene terephthalate (PET) fibers, 35 to 45 parts by weight of low melting point fibers (LMF), and 25 to 35 parts by weight of polypropylene (PP) fibers.

차음층(3)에서 폴리에틸렌테레프탈레이트(PET) 섬유는 기재로서의 기능, 폴리프로필렌(PP) 섬유는 본 발명에 의해 제조된 적층체를 원하는 형태로 성형하는 딥 드로윙 과정에서 큰 굴곡으로 변형시 유동성을 증가시키는 기능을 담당한다. 저융점 섬유는 상대적으로 낮은 온도인 130 ~ 180℃ 에서 용융되어, 폴리에틸렌테레프탈레이트(PET) 섬유와 폴리프로필렌(PP) 섬유 사이를 액상으로 스며들어 결합시키는 기능을 갖는다.In the sound insulation layer 3, polyethylene terephthalate (PET) fibers function as a base material, and polypropylene (PP) fibers improve fluidity when deformed into large bends in the deep drawing process of forming the laminate manufactured according to the present invention into a desired shape. responsible for increasing The low-melting fiber is melted at a relatively low temperature of 130 to 180 ° C., and has a function of infiltrating and bonding between polyethylene terephthalate (PET) fibers and polypropylene (PP) fibers in a liquid phase.

차음층(3)에서 상대적으로 저융점 섬유가 많이 포함되는 것은 상대적으로 많은 량의 저융점 섬유가 용융하여 폴리에틸렌테레프탈레이트(PET) 섬유와 폴리프로필렌(PP) 섬유 사이를 견고하게 결합하고, 흡음층(2) 보다는 상대적으로 저융점 섬유가 많이 포함되어 용융되므로, 폴리에틸렌테레프탈레이트(PET) 섬유와 폴리프로필렌(PP) 섬유 사이의 기공을 용융된 저융점 섬유가 채워서 차음층(3)을 전체적으로 치밀하게 하여 차음기능이 강화된다.The fact that a relatively large amount of low-melting fiber is included in the sound insulation layer 3 means that a relatively large amount of low-melting fiber is melted and firmly bonded between polyethylene terephthalate (PET) fibers and polypropylene (PP) fibers, and the sound-absorbing layer Since relatively many low-melting fibers are included and melted compared to (2), the molten low-melting fibers fill the pores between polyethylene terephthalate (PET) fibers and polypropylene (PP) fibers to make the sound insulation layer 3 dense as a whole. Thus, the sound insulation function is strengthened.

본 발명의 차량 트렁크 센터 언더 트레이 적층체에서 상기 표피층(1)은 면밀도 150 ~ 200g/m2 이고, 흡음층(2)은 면밀도 1000 ~ 1200g/m2 이고, 차음층(3)은 면밀도 180 ~ 220g/m2 이다. In the vehicle trunk center under tray laminate of the present invention, the skin layer (1) has an areal density of 150 to 200 g/m 2 , the sound-absorbing layer (2) has an areal density of 1000 to 1200 g/m 2 , and the sound insulation layer (3) has an areal density of 180 to 1200 g/m 2 . 220 g/m 2 .

종래 기술의 차량 트렁크 센터 언더 트레이 적층체가 1930g/m2의인 반면, 본 발명에 차량 트렁크 센터 언더 트레이 적층체는 1330 ~ 1620g/m2의 면밀도를 갖어 종래기술의 적층체보다 68 ~ 84%의 중량으로 경량화된다.While the vehicle trunk center under tray laminate of the prior art is of 1930 g/m 2 , the vehicle trunk center under tray laminate of the present invention has an areal density of 1330 to 1620 g/m 2 , which is 68 to 84% of the weight of the prior art laminate. is lightened by

본 발명의 차량 트렁크 센터 언더 트레이 적층체에서 상기 표피층(1)의 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 6데니어이고, 상기 흡음층(2)의 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 10데니어, 저융점 섬유(LMF)는 3 ~ 6데니어, 중공사 섬유는 3 ~ 10데니어이며, 차음층(3)의 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 6데니어, 저융점 섬유(LMF)는 3 ~ 6데니어, 폴리프로필렌(PP) 섬유는 3 ~ 6데니어이다.In the vehicle trunk center under tray laminate of the present invention, the polyethylene terephthalate (PET) fiber of the skin layer 1 is 3 to 6 denier, and the polyethylene terephthalate (PET) fiber of the sound absorption layer 2 is 3 to 10 denier. , low melting point fiber (LMF) is 3 to 6 denier, hollow fiber fiber is 3 to 10 denier, polyethylene terephthalate (PET) fiber of the sound insulation layer (3) is 3 to 6 denier, low melting point fiber (LMF) is 3 ~ 6 denier, polypropylene (PP) fibers are 3 to 6 denier.

흡음층(2)의 기재역할의 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 10데니어이고, 흡음역할의 중공사 섬유는 3 ~ 10데니어인 반면, 저융점 섬유(LMF)는 3 ~ 6데니어인데 이는 섬유 직경인 데니어가 크면 섬유 사이의 간극이 커져 기공이 만아여 흡음성을 향상시킬 수 있기 때문이고, 저융점 섬유(LMF)는 상대적으로 낮은 온도에서 용융되어 폴리에틸렌테레프탈레이트(PET) 섬유와 중공사 섬유 사이에 침투하여 결합시키는 기능을 하여야 하므로, 상대적으로 작은 직경인 3 ~ 6데니어의 섬유를 사용한다.Polyethylene terephthalate (PET) fibers serving as the base material of the sound-absorbing layer 2 are 3 to 10 denier, and hollow fiber fibers serving as sound absorption are 3 to 10 denier, whereas low-melting fiber (LMF) is 3 to 6 denier, which is This is because when the fiber diameter, denier, is large, the gap between the fibers becomes large and pores are formed to improve sound absorption. Since it has to function to infiltrate and bond between them, a fiber with a relatively small diameter of 3 to 6 denier is used.

본 발명의 차량 트렁크 센터 언더 트레이 적층체의 제조방법은 a) 폴리에틸렌테레프탈레이트(PET) 섬유를 면밀도 150 ~ 200g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭횟수가 200 ~ 300 PPSC(Punching Per Square cm)범위로 니들펀칭하여 표피층(1)을 얻는 제 1 공정과, b) 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부와 저융점 섬유(LMF) 15 ~ 25중량부 및 중공사 섬유 45 ~ 55중량부를 면밀도 1000 ~ 1200g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭횟수가 100 ~ 200 PPSC(Punching Per Square cm)범위로 니들펀칭하여 흡음층(2)을 얻는 제 2 공정 및, c) 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부 및 저융점 섬유(LMF) 35 ~ 45중량부, 폴리프로필렌(PP) 섬유 25 ~ 35 중량부를 면밀도 180 ~ 220g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭횟수가 200 ~ 300 PPSC(Punching Per Square cm)범위로 니들펀칭하여 차음층(3)을 얻는 제 3 공정과, d) 제 1 공정에 얻어진 표피층과 제 2 공정에서 얻어진 흡음층(2)을 적층하여 니들펀니칭에 의해 합지하는 제 4 공정과, e) 제 4 공정에서 얻어진 표피층(1)과 대면하지 않는 흡음층(2)을 가열하여 제 3 공정에서 얻어진 차음층과 결합하는 제 5 공정을 포함한다.In the method for manufacturing the vehicle trunk center under tray laminate of the present invention, a) after forming a web by dispersing polyethylene terephthalate (PET) fibers with an areal density of 150 to 200 g/m 2 , the number of needle punches is 200 to 300 PPSC (Punching Per Square cm), the first step of obtaining the skin layer (1) by needle punching, and b) 25 to 35 parts by weight of polyethylene terephthalate (PET) fiber, 15 to 25 parts by weight of low melting point fiber (LMF) and hollow fiber fiber A second process of obtaining a sound-absorbing layer (2) by dispersing 45 to 55 parts by weight at an areal density of 1000 to 1200 g/m 2 to form a web, and then needle punching in a range of 100 to 200 PPSC (Punching Per Square cm) And, c) 25 to 35 parts by weight of polyethylene terephthalate (PET) fibers, 35 to 45 parts by weight of low-melting fiber (LMF), and 25 to 35 parts by weight of polypropylene (PP) fibers are dispersed at a density of 180 to 220 g / m 2 After forming the web, the number of needle punches is needle punched in the range of 200 to 300 PPSC (Punching Per Square cm) in the third step of obtaining the sound insulation layer (3), and d) in the skin layer obtained in the first step and the second step A fourth step of laminating the obtained sound-absorbing layers 2 and bonding them together by needle punching, e) heating the sound-absorbing layer 2 that does not face the skin layer 1 obtained in the fourth step to heat the sound insulation obtained in the third step A fifth step of bonding with the layer is included.

본 발명의 차량 트렁크 센터 언더 트레이 적층체에서 표피층은 트렁크 내부에 노출되는 부분으로 공구키트가 접촉하여 찍힘이 없어야 하므로, 소정의 강도를 갖는 것이 바람직하고, 1차적으로 발생된 소리를 차단시키는 차음 기능 또한 갖는다. 따라서 부직포제조시 상대적으로 고밀도를 갖는 것이 바람직하다.In the vehicle trunk center under tray laminate of the present invention, the skin layer is a portion exposed to the inside of the trunk and should not be punctured by contacting the tool kit, so it is desirable to have a predetermined strength and to have a sound insulation function that primarily blocks the generated sound. also have Therefore, it is desirable to have a relatively high density when manufacturing a nonwoven fabric.

표피층(1)을 얻는 제 1 공정은 폴리에틸렌테레프탈레이트(PET) 섬유를 면밀도 150 ~ 200g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭횟수가 200 ~ 300 PPSC(Punching Per Square cm)범위로 니들펀칭된 부직포인데, 이는 1 cm2당 니들펀칭회수로 니들펀칭회수가 증가면, 상대적으로 동일한 면밀도에서도 두께가 얇아지면 더 단단해지고, 강성이 증가하면서 고밀도 부직포를 얻게 된다. 바람직하기는 니들펀칭횟수가 230 ~ 300 PPSC(Punching Per Square cm)범위이다.In the first step of obtaining the skin layer 1, a web is formed by dispersing polyethylene terephthalate (PET) fibers with an areal density of 150 to 200 g/m 2 , and then the number of needle punches is in the range of 200 to 300 PPSC (Punching Per Square cm). It is a needle punched nonwoven fabric, which becomes harder when the number of needle punches increases with the number of needle punches per 1 cm 2 and the thickness becomes thinner even at a relatively same area density, and a high density nonwoven fabric is obtained with increased stiffness. Preferably, the number of needle punches is in the range of 230 to 300 PPSC (Punching Per Square cm).

흡음층(2)을 얻는 제 2 공정은 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부와 저융점 섬유(LMF) 15 ~ 25중량부 및 중공사 섬유 45 ~ 55중량부를 면밀도 1000 ~ 1200g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭횟수가 100 ~ 200 PPSC(Punching Per Square cm)범위로 니들펀칭하여 흡음층(2)을 저밀도 부직포를 얻는다. 흡음층(2)은 상기 표피층(1)과 같이 고밀도로 하게 되면, 차음성능은 우수해 지지만 상대적으로 흡음성능은 낮아지게 된다. 따라서 흡음층(2)은 니들펀칭회수를 적게하여 저밀도 부직포를 제조하여야 하고, 이는 중공사 섬유를 포함하는 것과 함께 흡음층(2)의 흡음성능을 높이는데 중요한 점이다. 바람직하기는 니들펀칭횟수가 150 ~ 180 PPSC(Punching Per Square cm)범위이다.In the second step of obtaining the sound-absorbing layer 2, 25 to 35 parts by weight of polyethylene terephthalate (PET) fibers, 15 to 25 parts by weight of low melting point fibers (LMF), and 45 to 55 parts by weight of hollow fiber fibers having an area density of 1000 to 1200 g/m After dispersing to 2 to form a web, the number of needle punching is needle punched in the range of 100 to 200 PPSC (Punching Per Square cm) to obtain a low density nonwoven fabric for the sound absorbing layer (2). When the sound-absorbing layer 2 has a high density like the skin layer 1, the sound insulation performance is excellent, but the sound absorption performance is relatively low. Therefore, the sound-absorbing layer 2 should be made of a low-density nonwoven fabric by reducing the number of needle punches, which is an important point in improving the sound-absorbing performance of the sound-absorbing layer 2 together with the inclusion of hollow fiber fibers. Preferably, the number of needle punches is in the range of 150 to 180 PPSC (Punching Per Square cm).

상기 흡음층(2)을 형성하는 폴리에틸렌테레프탈레이트(PET) 섬유는 3 ~ 10데니어, 저융점 섬유(LMF)는 3 ~ 6데니어, 중공사 섬유는 3 ~ 10데니어이며, 섬유장은 각각 51 ~ 64㎜의 섬유를 카딩, 웹형성 및 웹결합에 의해 제조된 것이고, 웹결합은 니들펀칭에 의한 웹결합이 바람직하며 표면이 부드러운 질감을 나타내는 벨루어 타입(velour-type) 부직포가 바람직하다.Polyethylene terephthalate (PET) fibers forming the sound-absorbing layer 2 are 3 to 10 denier, low melting point fibers (LMF) are 3 to 6 denier, hollow fiber fibers are 3 to 10 denier, and the fiber length is 51 to 64, respectively. It is produced by carding, web formation, and web bonding of millimeter fibers, preferably web bonding by needle punching, and preferably a velor-type nonwoven fabric having a smooth surface.

차음층(3)을 얻는 제 3 공정은 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부 및 저융점 섬유(LMF) 35 ~ 45중량부, 폴리프로필렌(PP) 섬유 25 ~ 35 중량부를 면밀도 180 ~ 220g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭횟수가 200 ~ 300 PPSC(Punching Per Square cm)범위로 니들펀칭하여 차음층(3)의 고밀도 부직포를 얻는다. In the third process of obtaining the sound insulation layer 3, 25 to 35 parts by weight of polyethylene terephthalate (PET) fibers, 35 to 45 parts by weight of low melting point fibers (LMF), and 25 to 35 parts by weight of polypropylene (PP) fibers having an area density of 180 to 35 parts by weight After forming a web by dispersing at 220 g/m 2 , needle punching is performed in a range of 200 to 300 PPSC (Punching Per Square cm) to obtain a high-density nonwoven fabric of the sound insulation layer 3 .

차음층(3)은 트렁크 하부의 리어플로워 측과 대면하여 외부 소음, 노면 등으로부터 흘러들어오는 소음을 차단시키는 기능을 하여야 한다. 따라서 부직포제조시 상대적으로 고밀도를 갖는 것이 바람직하다.The sound insulation layer 3 faces the rear floor under the trunk and has a function of blocking external noise and noise flowing in from the road surface. Therefore, it is desirable to have a relatively high density when manufacturing a nonwoven fabric.

차음층(3)을 니들펀칭회수를 높게하여 고밀도를 가져야 하고, 바람직하기는 니들펀칭횟수가 230 ~ 300 PPSC(Punching Per Square cm)범위이다.The sound insulation layer 3 should have high density by increasing the number of needle punches, and preferably, the number of needle punches is in the range of 230 to 300 PPSC (Punching Per Square cm).

상기 흡음층(2)과 차음층(3)의 구성성분인 저융점 섬유(LMF)는 130 ~ 180℃의 용융온도를 갖고 폴리에틸렌테레프탈레이트(PET) 소재이다.The low-melting fiber (LMF), which is a component of the sound-absorbing layer 2 and the sound-insulating layer 3, has a melting temperature of 130 to 180 ° C. and is a polyethylene terephthalate (PET) material.

상기 제 1 공정과 제 2 공정에서 각각 제조된 표피층(1), 흡음층(2)을 적층하여 니들펀칭하여 합지하여 제 4 공정을 수행한다. 이때의 니들펀칭횟수는 수십 PPSC(Punching Per Square cm)범위이고, 바람직하기는 20 ~ 40 PPSC(Punching Per Square cm)범위이다. A fourth process is performed by laminating the skin layer 1 and the sound-absorbing layer 2 prepared in the first process and the second process, respectively, and needle punching and bonding them together. At this time, the number of times of needle punching is in the range of several tens PPSC (Punching Per Square cm), preferably in the range of 20 to 40 PPSC (Punching Per Square cm).

상기 제 4 공정에서 표피층(1), 흡음층(2) 순으로 합지된 후, 표피층(1)과 대면하지 않는 흡음층(2)에는 벨루어 타입(velour-type)의 기모가 형성되어 있다. 이 기모를 가열하면서 차음층(3)을 결합하여 적층함으로써, 차량 트렁크 센터 언더 트레이 적층체를 제조한다.After the skin layer 1 and the sound-absorbing layer 2 are laminated in this order in the fourth step, a velor-type nap is formed on the sound-absorbing layer 2 that does not face the skin layer 1. A vehicle trunk center undertray laminate is manufactured by combining and laminating the sound insulation layer 3 while heating the napping.

본 발명의 차량 트렁크 센터 언더 트레이 적층체는 종래기술에 의한 차량 트렁크 센터 언더 트레이 적층체에 비하여 중량을 16 ~ 32% 감소시키되, 흡음성능을 향상시키는 저밀도 흡음층(2)을 구현할 수 있다. 또한 종전의 PP 시트와 동등한 강도와 차음성능을 갖는 표피층(1)과 차음층(3)을 구현할 수 있다.The vehicle trunk center under tray laminate of the present invention can realize a low-density sound absorbing layer 2 that reduces the weight by 16 to 32% compared to the prior art vehicle trunk center under tray laminate and improves sound absorption performance. In addition, the skin layer 1 and the sound insulation layer 3 having strength and sound insulation performance equivalent to those of the conventional PP sheet can be implemented.

<실시예 1><Example 1>

아래 [표 1]에 나타낸 조성 및 비율에 따라 각각의 층에 따른 소재를 준비하고, 위 기재한 본 발명의 제조공정에 의해 위로부터 표피층(1)/흡음층(2)/차음층(3)으로 순차 적층된 다층구조의 차량 트렁크 센터 언더 트레이 적층체(S)를 제조하였다.Materials for each layer were prepared according to the composition and ratio shown in [Table 1] below, and the skin layer (1) / sound-absorbing layer (2) / sound-insulating layer (3) was formed from above by the manufacturing process of the present invention described above. A vehicle trunk center under tray laminate (S) having a multi-layer structure sequentially laminated was manufactured.

구분division 조성성분Ingredients 비율ratio 비고 note 표피층(1)epidermal layer (1) PET섬유PET fiber 100중량부100 parts by weight PET섬유 섬도 3~6데니어, 길이 51~64로 제 조된 면밀도 180g/m2 고밀도부직포High-density non-woven fabric with a surface density of 180 g/m 2 made of PET fiber fineness of 3 to 6 denier and length of 51 to 64
흡음층(2)

sound absorbing layer (2)
PET섬유PET fiber 30중량부30 parts by weight
PET섬유 및 중공사섬유 섬도 3~10데니어, 길이 51~64㎜,
저융점섬유 4-6데어어 51~64㎜로 제조된 벨루어 타입 면밀도 1000g/m2 저밀도부직포

PET fiber and hollow fiber fiber fineness of 3 to 10 denier, length of 51 to 64 mm,
Velor-type cotton density 1000g/m 2 low-density nonwoven fabric made of low-melting fiber 4-6 derere 51-64 mm
저융점섬유low melting fiber 20중량부20 parts by weight 중공사섬유hollow fiber 50중량부50 parts by weight 차음층(3)Sound Insulation Layer (3) PET섬유PET fiber 30중량부30 parts by weight PET섬유 및 PP섬유 섬도 3~6데니어,
길이 51~64㎜,
저융점섬유 4-6데어어 51~64㎜로 제조된 면밀도 200g/m2 고밀도부직포
PET fiber and PP fiber fineness 3~6 denier,
Length 51~64㎜,
High-density nonwoven fabric with 200 g/m2 area density made of low-melting fiber 4-6 derere 51-64 mm
저융점섬유low melting fiber 40중량부40 parts by weight PP섬유PP fiber 30중량부30 parts by weight

<실시예 2><Example 2>

상기 <실시예 1>에서 제조한 다층구조의 차량 트렁크 센터 언더 트레이 적층체(S) 원단을 230℃에서 가열한 후, 10℃의 온도로 냉각한 하부금형에 위치시키고, 100Kgf/㎠으로 가압하면서 70초를 유지한 다음 성형된 차량 트렁크 센터 언더 트레이를 금형으로부터 추출하였다.After heating the fabric of the multi-layered vehicle trunk center under tray laminate (S) prepared in <Example 1> at 230 ° C, placing it in a lower mold cooled to a temperature of 10 ° C, and pressurizing at 100 Kgf / cm 2 After holding for 70 seconds, the molded vehicle trunk center undertray was extracted from the mold.

<시험예> <Test Example>

상기 <실시예 1 및 2>로부터 제조된 차량 트렁크 센터 언더 트레이 적층체로부터 시편를 준비하고, 시편에 대하여 기계적 강도, 차음성(KS F 2814-2), 흡음율(MS 343-05 따라 감음계수로 평가하였으며, 500, 1000, 2000Hz에서의 평균값)에 대하여 시험하고, 그 결과를 아래 [표 2] 및 [표 3]에 나타내었다.Specimens were prepared from the vehicle trunk center under tray laminates prepared in <Examples 1 and 2>, and mechanical strength, sound insulation (KS F 2814-2), and sound absorption coefficient (according to MS 343-05) were evaluated for the specimens. and average values at 500, 1000, and 2000 Hz) were tested, and the results are shown in [Table 2] and [Table 3] below.

시험항목Test Items 단위 unit 시험결과Test result 시험방법Test Methods 중량weight g/㎡g/㎡ 13801380

MS 343-05


MS 343-05
인장강도(가로/세로방향)Tensile strength (horizontal/longitudinal direction) ㎏f/5㎝kgf/5cm 20.5/20.720.5/20.7 인열강도(가로/세로방향)Tear strength (horizontal/vertical direction) ㎏fkgf 8.1/11.58.1/11.5 내마모성wear resistance class 33 압축탄성율compressive modulus %% 4343

시험항목Test Items 시험결과Test result 비고note

차음율


sound insulation rate
1,000Hz1,000Hz 1515
KS F 2814-2

KS F 2814-2
2,000Hz2,000Hz 2121 3,150Hz3,150Hz 2828 5,000Hz5,000Hz 3232 흡음율absorption rate 500, 1000, 2000Hz에서의 평균값Average values at 500, 1000 and 2000 Hz 0.610.61 MS 343-05MS 343-05

상기 [표 2] 및 [표 3]에 나타난 바와같이 본 발명 따른 차량용 트렁트 센터 언더 트레이 적층체는 가로방향과 세로방향의 편차가 비교적 작으며, 차음성이 주파수에 비례하여 수치가 높게 나타나는 것은 차음성이 우수하고, 흡음률은 500, 1000, 2000Hz에서의 평균값이 높을수록 우수하므로 본 발명 따른 차량용 트렁트 센터 언더 트레이 적층체의 흡,차음성도 우수한 것을 확인할 수 있다.As shown in [Table 2] and [Table 3], the vehicle trunk center under tray laminate according to the present invention has a relatively small deviation in the horizontal direction and the vertical direction, and the sound insulation value is high in proportion to the frequency. Since the sound insulation property and the sound absorption coefficient increase as the average value at 500, 1000, and 2000 Hz increases, it can be confirmed that the sound absorption and insulation properties of the trunk center under tray laminate for a vehicle according to the present invention are also excellent.

1; 표피층
2; 흡음층
3; 차음층
One; epidermal layer
2; sound absorption layer
3; sound insulation layer

Claims (5)

폴리에틸렌테레프탈레이트(PET) 섬유로 이루어진 부직포인 표피층(1)과,
폴리에틸렌테레프탈레이트(PET) 섬유, 저융점 섬유(LMF), 중공사 섬유로 이루어진 부직포인 흡음층(2)과,
폴리에틸렌테레프탈레이트(PET) 섬유, 저융점 섬유(LMF), 폴리프로필렌(PP) 섬유로 이루어진 부직포인 차음층(3)으로 이루어진 것을 특징으로 하는 차량 트렁크 센터 언더 트레이 적층체.
A skin layer 1, which is a nonwoven fabric made of polyethylene terephthalate (PET) fibers,
A sound-absorbing layer 2, which is a nonwoven fabric made of polyethylene terephthalate (PET) fiber, low melting point fiber (LMF), and hollow fiber fiber;
A vehicle trunk center under tray laminate, characterized in that it is made of a sound insulation layer (3), which is a nonwoven fabric made of polyethylene terephthalate (PET) fiber, low melting point fiber (LMF), and polypropylene (PP) fiber.
청구항1에 있어서,
흡음층(2)은 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부와 저융점 섬유(LMF) 15 ~ 25중량부 및 중공사 섬유 45 ~ 55중량부로 이루어진 부직포이고,
차음층(3)은 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부 및 저융점 섬유(LMF) 35 ~ 45중량부, 폴리프로필렌(PP) 섬유 25 ~ 35 중량부로 이루어진 것을 특징으로 하는 차량 트렁크 센터 언더 트레이 적층체.
In claim 1,
The sound-absorbing layer 2 is a nonwoven fabric composed of 25 to 35 parts by weight of polyethylene terephthalate (PET) fibers, 15 to 25 parts by weight of low melting point fibers (LMF), and 45 to 55 parts by weight of hollow fiber fibers,
The sound insulation layer (3) is a vehicle trunk center, characterized in that composed of 25 to 35 parts by weight of polyethylene terephthalate (PET) fiber, 35 to 45 parts by weight of low melting point fiber (LMF), and 25 to 35 parts by weight of polypropylene (PP) fiber Undertray laminate.
청구항1에 있어서,
표피층(1)은 면밀도 150 ~ 200g/m2 이고, 흡음층(2)은 면밀도 1000 ~ 1200g/m2 이고, 차음층(3)은 면밀도 180 ~ 220g/m2 이되, 표피층(1)과 차음층(3)의 밀도는 흡음층(2)의 밀도에 비하여 상대적으로 고밀도인 것을 특징으로 하는 차량 트렁크 센터 언더 트레이 적층체.
In claim 1,
The skin layer (1) has an areal density of 150 to 200 g/m 2 , the sound-absorbing layer (2) has an areal density of 1000 to 1200 g/m 2 , and the sound insulation layer (3) has an areal density of 180 to 220 g/m 2 , but the skin layer (1) and sound insulation The vehicle trunk center undertray laminate, characterized in that the density of the layer (3) is relatively high compared to the density of the sound-absorbing layer (2).
a) 폴리에틸렌테레프탈레이트(PET) 섬유를 면밀도 150 ~ 200g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭하여 표피층(1)을 얻는 제 1 공정과,
b) 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부와 저융점 섬유(LMF) 15 ~ 25중량부 및 중공사 섬유 45 ~ 55중량부를 면밀도 1000 ~ 1200g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭하여 흡음층(2)을 얻는 제 2 공정 및,
c) 폴리에틸렌테레프탈레이트(PET) 섬유 25 ~ 35중량부 및 저융점 섬유(LMF) 35 ~ 45중량부, 폴리프로필렌(PP) 섬유25 ~ 35 중량부를 면밀도 180 ~ 220g/m2 로 분산시켜 웹을 형성한 후, 니들펀칭하여 파음층(3)을 얻는 제 3 공정과,
d) 제 1 공정에 얻어진 표피층과 제 2 공정에서 얻어진 흡음층(2)을 적층하여 니들펀니칭에 의해 합지하는 제 4 공정과,
e) 제 4 공정에서 얻어진 표피층(1)과 대면하지 않는 흡음층(2)을 가열하여 제 3 공정에서 얻어진 차음층과 결합하는 제 5 공정을 포함하는 것을 특징으로 하는 차량 트렁크 센터 언더 트레이 적층체의 제조방법.
a) a first step of dispersing polyethylene terephthalate (PET) fibers with an areal density of 150 to 200 g/m 2 to form a web, and then needle punching to obtain a skin layer (1);
b) 25 to 35 parts by weight of polyethylene terephthalate (PET) fiber, 15 to 25 parts by weight of low-melting fiber (LMF), and 45 to 55 parts by weight of hollow fiber fiber are dispersed at an areal density of 1000 to 1200 g/m 2 to form a web , a second step of obtaining a sound-absorbing layer 2 by needle punching, and
c) 25 to 35 parts by weight of polyethylene terephthalate (PET) fibers, 35 to 45 parts by weight of low-melting fiber (LMF), and 25 to 35 parts by weight of polypropylene (PP) fibers are dispersed at an areal density of 180 to 220 g/m 2 to form a web. A third step of obtaining a sound wave layer 3 by needle punching after formation;
d) a fourth step of laminating the skin layer obtained in the first step and the sound-absorbing layer 2 obtained in the second step and bonding them together by needle punching;
e) a fifth step of heating the sound-absorbing layer (2) that does not face the skin layer (1) obtained in the fourth step and combining it with the sound insulating layer obtained in the third step; Manufacturing method of.
청구항4에 있어서,
표피층(1)과 차음층(3)의 밀도는 흡음층(2)의 밀도에 비하여 상대적으로 고밀도가 되도록 니들펀칭횟수가 많은 것을 특징으로 차량 트렁크 센터 언더 트레이 적층체의 제조방법.
In claim 4,
The density of the skin layer (1) and the sound insulation layer (3) is relatively high compared to the density of the sound absorption layer (2), characterized in that the number of times of needle punching is large, manufacturing method of the vehicle trunk center under tray laminate.
KR1020210100689A 2021-07-30 2021-07-30 Vehicle Trunk Center Under Tray For Vehicle and manufacturing method thereof KR102558807B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020210100689A KR102558807B1 (en) 2021-07-30 2021-07-30 Vehicle Trunk Center Under Tray For Vehicle and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020210100689A KR102558807B1 (en) 2021-07-30 2021-07-30 Vehicle Trunk Center Under Tray For Vehicle and manufacturing method thereof

Publications (2)

Publication Number Publication Date
KR20230018772A true KR20230018772A (en) 2023-02-07
KR102558807B1 KR102558807B1 (en) 2023-07-24

Family

ID=85253278

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020210100689A KR102558807B1 (en) 2021-07-30 2021-07-30 Vehicle Trunk Center Under Tray For Vehicle and manufacturing method thereof

Country Status (1)

Country Link
KR (1) KR102558807B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020039071A (en) * 2000-11-20 2002-05-25 최광인 Producing method of polyester sound absorptive material having three dimensional fiber structure
KR100451400B1 (en) 2002-03-23 2004-10-08 (주)휴인텍 Polyester non-woven composite sheet having excellent sound-absorbing and sound-blocking properties and manufacturing method thereof
KR101533293B1 (en) * 2014-06-16 2015-07-02 주식회사 금호 엔.티 Multi-functional Nonwoven composite sheet having excellent sound absorbing and sound-blocking properties and manufacturing method thereof
KR101555857B1 (en) * 2014-03-31 2015-09-25 원풍물산주식회사 Manufacturing method of interior materials for automible
KR20210082667A (en) * 2019-12-26 2021-07-06 현대자동차주식회사 a polyester sound absorbing material, manufacturing method of a molded article to which a polyester sound absorbing material is applied, and a molded product manufactured thereby

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020039071A (en) * 2000-11-20 2002-05-25 최광인 Producing method of polyester sound absorptive material having three dimensional fiber structure
KR100451400B1 (en) 2002-03-23 2004-10-08 (주)휴인텍 Polyester non-woven composite sheet having excellent sound-absorbing and sound-blocking properties and manufacturing method thereof
KR101555857B1 (en) * 2014-03-31 2015-09-25 원풍물산주식회사 Manufacturing method of interior materials for automible
KR101533293B1 (en) * 2014-06-16 2015-07-02 주식회사 금호 엔.티 Multi-functional Nonwoven composite sheet having excellent sound absorbing and sound-blocking properties and manufacturing method thereof
KR20210082667A (en) * 2019-12-26 2021-07-06 현대자동차주식회사 a polyester sound absorbing material, manufacturing method of a molded article to which a polyester sound absorbing material is applied, and a molded product manufactured thereby

Also Published As

Publication number Publication date
KR102558807B1 (en) 2023-07-24

Similar Documents

Publication Publication Date Title
US6802389B2 (en) Multi-density sound attenuating laminates and methods of making same
US4199635A (en) Fabric faced laminate panel and method of manufacture
KR101974469B1 (en) Deep draw composites and methods of using them
KR100802677B1 (en) Vertical type sound-absorbing materials and method for manufacturing the same
JP3613727B2 (en) Sound absorbing material with excellent moldability
JP2017185816A (en) Molded soundproofing component, and manufacturing method thereof
JP4685113B2 (en) Automotive ceiling materials
KR20060045364A (en) Laminated member for automobile interior ceiling material
KR101874305B1 (en) A vehicle floor carpet and a method of producing
KR20180130027A (en) Floor Carpet for vehicles and manufacture method thereof
KR20170076255A (en) Undercover for automobile and Preparing Method thereof
KR101992116B1 (en) Vehicle interior material of multi-layer having Perforated film and synthetic resin powder and manufacturing method thereof
KR102018644B1 (en) A multi-layered vehicle engine cover and method of manufacturing an engine cover
KR101954178B1 (en) method of manufacturing a three-layer composite nonwoven fabric by needle punching simultaneously in the upward direction and the downward direction
KR20070071351A (en) Headlining material for automobile using thermosetting polymer
KR102558807B1 (en) Vehicle Trunk Center Under Tray For Vehicle and manufacturing method thereof
KR20180047882A (en) Single vehicle interior materials and methods for their preparation
KR100768824B1 (en) Equipment for the production of multilayer extruded sheet and multilayer extruded sheet
JP3972296B2 (en) Sound absorbing material and vehicle interior material
KR102219310B1 (en) Nonwoven with improved strength and sound absorption, manufacturing method thereof and vehicle under cover composed of nonwoven with improved strength and sound absorption
JP7328353B2 (en) Multi-layer sound absorbing material
KR20190073708A (en) Engine cover and engine undercover of multi- rayer for vehicles
KR102388493B1 (en) Electric vehicle engine room sound-absorbing panel and its manufacturing method
US20220410525A1 (en) Layered sound-absorbing material
KR102453898B1 (en) package tray of a car having improved sound absorption and light weight and method for manufacturing thereof

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant