KR20140136695A - Polyester non-woven fabric having a thermal-forming property and preparing method thereof - Google Patents
Polyester non-woven fabric having a thermal-forming property and preparing method thereof Download PDFInfo
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- KR20140136695A KR20140136695A KR20130057060A KR20130057060A KR20140136695A KR 20140136695 A KR20140136695 A KR 20140136695A KR 20130057060 A KR20130057060 A KR 20130057060A KR 20130057060 A KR20130057060 A KR 20130057060A KR 20140136695 A KR20140136695 A KR 20140136695A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/55—Polyesters
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H13/00—Other non-woven fabrics
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/04—Heat-responsive characteristics
- D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/062—Load-responsive characteristics stiff, shape retention
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
본 발명은 열성형이 가능한 폴리에스테르 부직포 및 그 제조방법에 대한 것으로, 더욱 자세하게는 종래의 일반적인 플라스틱 몰딩(plastic moulding) 제품을 대체할 수 있도록 하면서 우수한 방음효과와 형태 안정성을 갖는 열성형이 가능한 폴리에스테르 부직포 및 그 제조방법에 대한 것이다.
The present invention relates to a thermoformable polyester nonwoven fabric and a method of manufacturing the same. More particularly, the present invention relates to a polyester nonwoven fabric capable of thermoforming with excellent soundproofing effect and shape stability while being able to replace conventional general plastic molding products, An ester nonwoven fabric and a method of producing the same.
통상적으로 사용되어 오고 있는 종래의 일반적인 플라스틱 몰딩 제품은 제조 및 성형성에 간편성은 있으나, 이들 원료의 제품은 그 재질의 특성상 완제품에 공극이 없어 방음 등의 효과가 떨어진다는 단점이 있어, 방음이 요구되는 부분에서의 사용에는 적합하지 않았다. Conventional general plastic molding products, which have been used conventionally, have simplicity in manufacturing and molding properties. However, these products have disadvantages such as lack of airtightness due to the nature of the materials, Lt; / RTI >
따라서, 이를 해결하기 위한 것으로, 만족스러운 성형성에 방음성을 보완하기 위한 것으로, 발포우레탄이라든지 다양한 소재의 펠트 제품을 바인더를 사용하여 복합화시킨 제품들이 제안되어 사용되어 왔는데, 예를 들어 대한민국 특허공개공보 제2000-0000207호에서는, 자동차의 천정 및 보닛 덮개(Bonnet Hood) 등에 적용되어 우수하고 양호한 흡음성과 차음성을 갖도록 한 자동차 내장용 성형기재 및 그 제조방법에 관한 것으로, 본 성형기재는 자동차 내장용 성형기재의 제조시 우레탄 폼을 사용하며, 우레탄 폼이 차체에 접하는 면에 발포 플라스틱층을 접착하고, 반대면(자동차 실내에 접하는 면)에 다공성 부직포를 접착함으로서, 흡음성과 차음성이 동시에 달성한다고 개시하고 있다. 그러나, 상기한 제품들은 이들 제품을 제조하는 공정에서 분진이 많이 발생하고, 또한 유기용제를 사용함에 따라 작업환경이 좋지 않으며 재활용 또한 쉽지 않다는 문제점이 있다. In order to solve this problem, there have been proposed and used products in which foamed urethane or felt products of various materials are combined by using a binder in order to supplement satisfactory formability and soundproofness. For example, Korean Patent Laid- 2000-0000207 relates to a molding base for an automobile interior which is applied to a ceiling of a car and a bonnet hood and has an excellent sound absorption property and a car sound, and a manufacturing method thereof, It has been disclosed that a urethane foam is used in the production of a base material, a foamed plastic layer is bonded to a surface of the urethane foam in contact with the vehicle body, and a porous nonwoven fabric is adhered to the opposite surface . However, the above-mentioned products have a problem that dust is generated in a process of manufacturing these products, and because of using organic solvents, the working environment is not good and recycling is also difficult.
이에 상기한 바와 같은 이 기술 분야에서의 문제점이 인식되고 이에 대한 해결책이 요구됨에 따라 다양한 노력들이 기울어져, 여러 가지 방안들이 제안되었는데, 예를 들어 대한민국 특허공개공보 제2003-0000746호의 자동차용 흡음제는 "자동차에서 발생하는 소음을 차단하기 위하여 설치되는 자동차용 흡차음 성형기재에 있어서, 상기 흡차음 성형기재는 PET섬유(Polyester staple fiber)를 소재로 종류별 특성에 따라 분포도를 달리하여 고밀도층과 저밀도층에 의한 연질층과 경질층으로 세분화하여 다층구조로 된 WEB적층체로 이루어져 구성됨을 특징으로 하는 자동차용 흡차음재"를 개시하고 있으며, 대한민국 특허공개공보 제2009-0009327호에서는 고용융성 섬유 및 접착성의 열가소성 섬유를 포함하는 압축된 섬유 웨브에 의해 형성된 열성형 가능한 방음 시트에 관한 것으로서, 상기 접착성 섬유가 적어도 부분적으로 고용융성 섬유를 코팅하고 섬유 매트릭스 내의 틈새 공간을 감소시키는 것을 개시하고 있으며, 대한민국 특허출원 제2010-0022130호는 자동차 열성형용 난연 부직포의 제조방법이라는 명칭으로 인계 난연제 및 가교제를 포함하는 난연성 조성물 및 이를 이용한 자동차 열성형용 난연 부직포에 관한 것으로, 상기 자동차 열성형용 난연 부직포는 난연성 조성물이 균일하게 살포 및 흡착되어 있고, 아크릴계 바인더가 부직포의 표면을 피복하고 있어서 열 성형 처리시에 난연 조성물의 가교제가 가교됨으로써 난연성 및 강도가 더욱 향상되고, 부직포가 수축되는 일이 없어 부직포 구조가 본질적으로 가지는 특성을 극대화할 수 있는 장점이 있다고 기술하고 있다. Accordingly, various efforts have been made due to the above-mentioned problems in the technical field being recognized and a solution thereof being required. For example, Korean Unexamined Patent Application Publication No. 2003-0000746 The present invention relates to a sound absorbing molding material for automobiles, which is installed to prevent noise generated in a car, wherein the sound absorbing molding material is made of PET fiber (polyester staple fiber), which has a high density layer and a low density layer And a WEB laminate having a multi-layered structure in which the soft layer and the hard layer are divided into a soft layer and a hard layer according to the present invention. Korean Patent Laid-Open Publication No. 2009-0009327 discloses a heat- A thermoformable soundproof sheet formed by a compressed fibrous web comprising fibers Korean Patent Application No. 2010-0022130 discloses a process for producing a flame retardant nonwoven fabric for automotive thermoforming, which comprises coating the melt-spun fiber at least partly with the adhesive fiber and reducing the interstitial space in the fiber matrix The present invention relates to a flame retardant composition comprising a phosphorus-based flame retardant and a crosslinking agent, and a flame retardant nonwoven fabric for automotive thermoformable use, wherein the flame-retardant composition is uniformly sprayed and adsorbed, and the acrylic binder covers the surface of the nonwoven fabric, The cross-linking agent of the flame-retardant composition is crosslinked at the time of the molding process, so that the flame retardancy and the strength are further improved, and the nonwoven fabric is not shrunk and the characteristics inherently possessed by the nonwoven fabric structure can be maximized.
그러나, 상기한 종래의 방법들은 내부 공극을 갖는 부직포를 이용하여 방음성 효과를 얻음과 함께 가교제 등을 사용하여 형태안정성을 갖게 하므로 플리스틱 몰딩을 대체하려고 시도된 것으로, 형태안정성과 방음성에 부가하여 생산성의 측면에서 보다 우수한 열성형 가능한 부직포 재질의 성형기재에 대한 요구가 지속되고 있는 실정이다.
However, the above-mentioned conventional methods have attempted to substitute flastic molding for obtaining a soundproof effect by using a nonwoven fabric having internal voids and using a crosslinking agent or the like to have shape stability. In addition to the form stability and soundproofness, There is a continuing need for a molding substrate of a nonwoven fabric material which can be thermoformed more than in the aspect of the present invention.
따라서, 본 발명은 상기한 종래 기술에 있어서의 기술적 문제점을 감안하여 된 것으로, 본 발명의 주목적은 종래의 일반적인 플라스틱 몰딩 제품을 대체할 수 있는 성형성 및 안정성을 가지면서 우수한 방음효과를 가지고 생산성이 우수한 열성형이 가능한 폴리에스테르 부직포를 제공하기 위한 것이다.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 plastic molding having excellent moldability and stability, And to provide a polyester nonwoven fabric capable of excellent thermoforming.
본 발명의 다른 목적은 상기한 우수한 특성을 갖는 열성형이 가능한 폴리에스테르 부직포를 보다 용이하게 제조하는 방법을 제공하기 위한 것이다.Another object of the present invention is to provide a method for manufacturing a thermoformable polyester nonwoven fabric having excellent properties as described above more easily.
본 발명은 또한 상기한 명확한 목적 이외에 본 명세서의 전반적인 기술로부터 이 분야의 통상인에 의해 용이하게 도출될 수 있는 다른 목적을 달성함을 그 목적으로 할 수 있다.
The present invention may also be directed to accomplishing other objects that can be easily derived by those skilled in the art from the overall description of the present specification, other than the above-described and obvious objects.
상기한 본 발명의 목적은 부직포 제조 시 융점이 낮은 섬유를 함께 방사함으로써 그 섬유가 바인더 역할을 하여 열성형이 가능하도록 하여 플라스틱 몰딩 제품으로서 사용될 수 있음을 인식하고, 우수한 형태 안정성과 방음효과를 가지는 구성을 밝혀내어 완성되었다.
It is an object of the present invention to provide a nonwoven fabric which can be used as a plastic molding product by spinning fibers having a low melting point when the nonwoven fabric is produced, It was completed by clarifying the composition.
상기 목적을 달성하기 위한 본 발명의 열성형이 가능한 폴리에스테르 부직포는;The thermoformable polyester nonwoven fabric of the present invention for achieving the above object comprises;
융점이 250℃ 이상인 고융점 폴리에스터와 120 내지 220℃의 저융점 폴리에스터가 10~30 : 70~90의 중량비로 웹이 형성되어 니들 펀칭이나 열압착에 의해 100g/㎡ 내지 1000g/㎡의 단위 중량으로 형성된 것임을 특징으로 한다.
A high melting point polyester having a melting point of 250 ° C or higher and a low melting point polyester having a melting point of 120 to 220 ° C are formed at a weight ratio of 10 to 30:70 to 90 by a needle punching or thermocompression to a unit of 100 g / And is formed by weight.
상기 다른 목적을 달성하기 위한 본 발명의 열성형이 가능한 폴리에스테르 부직포의 제조방법은;According to another aspect of the present invention, there is provided a method of producing a thermoformable polyester nonwoven fabric comprising:
융점이 250℃ 이상인 고융점 폴리에스터와 120 내지 220℃의 저융점 폴리에스터를 10~30 : 70~90의 중량비로 동시에 방사한 후 웹으로 형성하여 니들 펀칭하거나 엠보싱롤을 통과시켜 열압착하여 제조함을 특징으로 한다.A high melting point polyester having a melting point of 250 ° C or higher and a low melting point polyester having a melting point of 120 to 220 ° C are simultaneously spinned at a weight ratio of 10 to 30:70 to 90 and then formed into a web to be subjected to needle punching or through an embossing roll, .
본 발명의 다른 구성에 따르면, 상기 저융점 폴리에스터는 융점이 120 내지 180℃의 것을 사용함을 특징으로 한다.According to another aspect of the present invention, the low-melting-point polyester has a melting point of 120 to 180 ° C.
본 발명의 또 다른 구성에 따르면, 상기 폴리에스터는 폴리에틸렌테레프탈레이트(polyethyleneterephthalate; PET)를 사용함을 특징으로 한다.According to another embodiment of the present invention, the polyester is characterized by using polyethylene terephthalate (PET).
본 발명의 또 다른 구성에 따르면, 상기 폴리에스터의 방사는 섬도 2 내지 10de의 섬도로 방사함을 특징으로 한다.
According to another embodiment of the present invention, the spinning of the polyester is characterized by spinning with a fineness of 2 to 10 denier.
상기와 같이 구성되는 본 발명의 열성형이 가능한 폴리에스테르 부직포 및 그 제조방법은 저융점의 폴리에스터를 일정량 함유되도록 혼합방사하므로 부직포가 자체적으로 결합력을 가지고 있어서 복합화시키거나 바인더 없이 자체적으로 열성형이 가능하기 때문에 공정을 줄이고 쉽게 재활용이 가능하도록 할 뿐 아니라, 또한 부직포 시트를 열프레싱 가공하면 형태안정성이 유지되고 유기용제를 사용하지 않아 친환경적이고, 흡음성능이 우수한 부직포를 제공할 수 있게 되어 상기한 문제를 해결한다.
The thermoformable polyester nonwoven fabric of the present invention having the above-described structure and the method for producing the polyester nonwoven fabric according to the present invention are mixed and spinned so as to contain a certain amount of polyester having a low melting point so that the nonwoven fabric has its own binding force, It is possible to provide a nonwoven fabric that is environmentally friendly and excellent in sound absorption performance because it is possible to reduce the number of processes and easily recycle the nonwoven fabric sheet and to heat-press the nonwoven fabric sheet to maintain shape stability, Solve the problem.
이하, 본 발명을 바람직한 실시형태에 의해 보다 자세하게 설명하지만, 본 발명의 기술사상 범위 내에서 다양한 변형 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속함은 당연한 것이다.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. will be.
흡음재는 흡음 방식에 따라 다공질 흡음재, 공명 흡음재, 판상 흡음재 등으로 나눌 수 있다. The sound absorbing material can be divided into a porous sound absorbing material, a resonant sound absorbing material, and a plate sound absorbing material according to a sound absorption method.
다공질 흡음재는 유리섬유, 식물성 섬유류, 발포 플라스틱 같이 표면과 내부에 미세한 구멍이 있는 소재로 재료 표면에 입사한 음파가 다공성 흡음재의 미세한 구멍을 통과하면서 주변 벽에 마찰이나 저항에 의해 열에너지로 변환되면서 흡음을 하는 원리이다.The porous sound absorbing material is a material having fine holes on the surface and inside such as glass fiber, vegetable fiber, and foam plastic. Sound waves entering the surface of the material pass through the minute holes of the porous sound absorbing material and are converted into heat energy by friction or resistance to the surrounding wall. And the like.
다공질 흡음재의 경우 소재의 두께나 재질, 통기성 등에 의해 흡음 특성이 변화하며 중, 고 주파수에서는 흡음성능이 좋으나 저주파에서는 성능이 떨어지고 통기성이 저하되면 중, 고 주파수에서도 흡음성능이 떨어진다. In case of porous sound-absorbing material, the sound-absorbing property changes depending on the thickness, material, and air permeability of the material, and the sound-absorbing performance is good at medium and high frequencies, but the performance is deteriorated at low frequencies.
공명 흡음재는 저음 주파수가 심한 곳에 빈 병을 놔두면 울림이 쉽게 없어지는 원리를 이용한 것으로 병 입구에서 공기 마찰이 심하게 일어나면서 소리에너지가 열에너지로 변환되면서 흡음을 하는 것으로 보통 70~300Hz 범위에서 일어나며 흡음 주파수와 공명 주파수가 일치 하는지 확인을 하여야 한다. Resonance sound absorbing material uses the principle that when the empty bottle is left in the place where the bass frequency is high, the sound is easily lost. Air friction occurs at the entrance of the bottle and the sound energy is converted into heat energy and sound absorption occurs. Usually, it occurs in the range of 70 to 300 Hz. And the resonance frequency should be checked.
판상 흡음재의 경우 플라스틱이나 합판 같은 얇은 판상 소재에 음이 입사되면 미세한 진동을 하면서 에너지의 변환이 일어나 흡음 특성을 지니게 되는 것으로 얇을수록 흡음효과가 크다는 특징이 있다.In the case of plate-shaped sound-absorbing materials, when a sound is incident on a thin plate-like material such as plastic or plywood, the sound is converted by energy conversion while performing minute vibration.
본 발명에서 이용하고자 하는 흡음 특성은 다공질 흡음 방식으로 다공질 흡음 방식의 소재에 막이나 표면에 도장을 할 경우에는 통기성이 떨어져 흡음성능이 현저히 감소된다. The sound-absorbing property to be used in the present invention is a porous sound-absorbing type, and when a film or a surface is applied to a porous sound-absorbing material, the breathability is poor and the sound-absorbing performance is significantly reduced.
바인더나 접착제를 사용하여 통기성을 떨어뜨리지 않아 최대한 흡음성능을 유지하면서 열 성형이 가능한 부직포의 제조 방법을 아래에 설명하겠다.A method of manufacturing a nonwoven fabric which can be thermoformed while maintaining the sound absorption performance without deteriorating the breathability by using a binder or an adhesive will be described below.
본 발명에 따른 열성형이 가능한 폴리에스테르 부직포는 융점이 250℃ 이상인 고융점 폴리에스터와 120 내지 220℃의 저융점 폴리에스터가 10~30 : 70~90의 중량비로 웹이 형성되어 니들 펀칭이나 열압착에 의해 100g/㎡ 내지 1000g/㎡의 단위 중량으로 형성되어 질 수 있다.The thermoformable polyester nonwoven fabric according to the present invention has a high melting point polyester having a melting point of 250 ° C or higher and a low melting point polyester having a melting point of 120 to 220 ° C at a weight ratio of 10 to 30:70 to 90, And may be formed by compression to have a unit weight of 100 g / m 2 to 1000 g / m 2.
상기와 같이 본 발명은 고융점 폴리에스터와 저융점 폴리에스터를 동시에 방사한 후 웹으로 형성함으로써 얻어진 부직포 시트를 열프레싱 가공하면 형태안정성이 유지되고 유기용제를 사용하지 않으며 재활용이 가능하면서 흡음성능이 우수한 부직포를 제공할 수 있게 되며, 본 발명에 따라 저융점 폴리에스터의 함량에 따라 형태안정성과 흡음성능을 적절하게 조절할 수 있게 된다.As described above, the present invention provides a nonwoven fabric sheet obtained by simultaneously spinning a high-melting-point polyester and a low-melting-point polyester and forming the web, and then heat-pressing the nonwoven fabric sheet to maintain shape stability, It is possible to provide an excellent nonwoven fabric. According to the present invention, the shape stability and the sound absorption performance can be appropriately adjusted according to the content of the low melting point polyester.
본 발명의 바람직한 실시형태에 따르면, 열성형이 가능한 폴리에스테르 부직포의 제조방법은 융점이 250℃ 이상인 고융점 폴리에스터와 120 내지 220℃의 저융점 폴리에스터를 10~30 : 70~90의 중량비로 동시에 방사한 후 웹으로 형성하여 니들 펀칭하거나 엠보싱롤을 통과시켜 열압착하여 제조할 수 있다.According to a preferred embodiment of the present invention, a method for producing a thermoformable polyester nonwoven fabric is characterized in that a high melting point polyester having a melting point of 250 ° C or higher and a low melting point polyester having a melting point of 120 to 220 ° C are mixed at a weight ratio of 10 to 30:70 to 90 And then formed into a web and needle-punched or passed through an embossing roll to thermocompression.
본 발명의 다른 바람직한 실시형태에 따르면, 상기 저융점 폴리에스터는 융점이 120 내지 180℃의 것을 사용할 수 있다.According to another preferred embodiment of the present invention, the low-melting-point polyester may have a melting point of 120 to 180 ° C.
본 발명에서는 또한 폴리에스터로서 폴리에틸렌테레프탈레이트(polyethyleneterephthalate; PET)를 사용하는 것이 특히 바람직할 수 있다.In the present invention, it is particularly preferable to use polyethylene terephthalate (PET) as the polyester.
본 발명의 실시형태에 따르면, 상기 폴리에스터의 방사는 섬도 2 내지 10de의 섬도로 방사하는 것이 바람직하다.According to an embodiment of the present invention, it is preferable that the spinning of the polyester emits with a fineness of 2 to 10 denier.
본 발명의 다른 실시형태에 따르면, 상기 본 발명에 따라 제조된 부직포는, 여기에 한정되는 것은 아니지만 열프레싱 기계를 통해 150℃에서 10초간 프레싱을 하여 보드형태 등으로 제작하여 다양한 용도로 사용할 수 있다.
According to another embodiment of the present invention, the nonwoven fabric manufactured according to the present invention may be used for various purposes by, for example, but not limited to, pressing through a thermal pressing machine at 150 ° C. for 10 seconds to form a board or the like .
이하, 본 발명을 실시예에 의해 보다 자세하게 설명한다. 다음의 실시예 및 비교실시예는 본 발명의 좀더 구체적으로 설명하는 것으로, 본 발명의 범주를 한정하는 것은 아니다.
Hereinafter, the present invention will be described in more detail with reference to examples. The following examples and comparative examples illustrate the invention in more detail and do not limit the scope of the invention.
실시예 1. Example 1.
융점이 250℃인 고융점 폴리에틸렌테레프탈레이트(이하, PET라고 함)와 융점이 150℃인 저융점 PET의 혼합비를 고융점:저융점=90:10으로 하여 방사를 한다. 방사한 섬유는 이젝터(Ejector)를 통해 연신이 되고 충돌판에 충돌하여 컨베이어 벨트에 랜덤하게 적층된다. 이때 단위 중량은 500g/㎡이 되도록 컨베이어 속도를 조정한다. 이렇게 형성된 웹은 카렌다롤에서 프리-본딩(Pre-bonding)을 하여 니들펀칭 방법으로 부직포를 제작하였다. 이렇게 제작한 부직포를 열프레싱 기계를 통해 150℃에서 10초간 프레싱을 하여 보드형태로 제작을 하였다.
(Hereinafter referred to as PET) having a melting point of 250 DEG C and low melting point PET having a melting point of 150 DEG C at a high melting point: low melting point = 90: 10. The spun fibers are stretched through an ejector and collide with the impingement plate and are randomly deposited on the conveyor belt. At this time, the conveyor speed is adjusted so that the unit weight is 500 g / m 2. The web thus formed was pre-bonded on a calender roll to prepare a nonwoven fabric by a needle punching method. The nonwoven fabric thus produced was pressed through a thermal pressing machine at 150 DEG C for 10 seconds to produce a board.
실시예 2. Example 2.
고융점 PET와 저융점 PET의 혼합비가 30: 70인 것을 제외하고 나머지 방법은 실시예 1과 동일하게 제작하였다.
Except that the mixing ratio of the high-melting-point PET to the low-melting-point PET was 30:70.
비교예 1.Comparative Example 1
고융점 PET와 저융점 PET의 혼합비가 5: 95인 것을 제외하고 나머지 방법은 실시예 1과 동일하게 제작하였다.
The remaining method was the same as Example 1 except that the blending ratio of the high melting point PET and the low melting point PET was 5:95.
비교예 2.Comparative Example 2
고융점 PET와 저융점 PET의 혼합비가 40:60인 것을 제외하고 나머지 방법은 실시예 1과 동일하게 제작하였다.
Except that the mixing ratio of the high melting point PET and the low melting point PET was 40:60.
실험예Experimental Example
1. 형태안정성: 보드형태로 제작된 물품의 형태안정성을 평가하여 다음과 같은 기준에 의해 다음 표 1에 나타냈다.1. Morphological stability: The morphological stability of the products prepared in the form of a board is evaluated and shown in the following Table 1 according to the following criteria.
X : 사용불가, ○: 사용 가능, ◎: 매우 좋음X: Not available, ○: Available, ◎: Very good
2. 소음감소계수: KSF 2805에 기재된 방법에 의거하여 흡음률을 측정하여 그 결과를 다음 표 1에 나타냈다.2. Noise reduction factor: The absorption coefficient was measured according to the method described in KSF 2805, and the results are shown in Table 1 below.
상기 표 1에서 알 수 있는 바와 같이, 저융점 PET섬유의 비율이 10% 이하가 되면 형태안정성이 좋지 않아 사용하기가 어렵고, 반대로 30% 이상이 되면 형태안정성은 좋으나 흡음 성능이 떨어지기 때문에 사용하는데 제약이 많다.
As can be seen from Table 1, when the ratio of the low-melting point PET fiber is less than 10%, the shape stability is poor and it is difficult to use. On the contrary, when the ratio is more than 30%, the shape stability is good, There are many restrictions.
이상에서 설명한 본 발명은 전술한 실시형태에 의하여 한정되는 것은 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어서 명백할 것이다.
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be obvious to the person.
Claims (5)
A high melting point polyester having a melting point of 250 ° C or higher and a low melting point polyester having a melting point of 120 to 220 ° C are formed at a weight ratio of 10 to 30:70 to 90 by a needle punching or thermocompression to a unit of 100 g / Wherein the thermoformable polyester nonwoven fabric is formed of a thermoplastic resin.
A high melting point polyester having a melting point of 250 ° C or higher and a low melting point polyester having a melting point of 120 to 220 ° C are simultaneously spinned at a weight ratio of 10 to 30:70 to 90 and then formed into a web to be subjected to needle punching or through an embossing roll, Wherein the polyester nonwoven fabric is thermoformable.
The method according to claim 2, wherein the low-melting-point polyester has a melting point of 120 to 180 ° C.
(polyethyleneterephthalate; PET)를 사용함을 특징으로 하는 열성형이 가능한 폴리에스테르 부직포의 제조방법.
The polyester film according to claim 2, wherein the polyester is polyethylene terephthalate
wherein the thermoplastic polyester nonwoven fabric is made of polyethyleneterephthalate (PET).
The process for producing thermoformable polyester nonwoven fabric according to claim 2, wherein the spinning of the polyester emits a fineness of fineness of 2 to 10 degrees.
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