KR101460242B1 - The adhesive film for fixing the module of mobile device, which has impact resistance and water resistance - Google Patents

The adhesive film for fixing the module of mobile device, which has impact resistance and water resistance Download PDF

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KR101460242B1
KR101460242B1 KR20130108409A KR20130108409A KR101460242B1 KR 101460242 B1 KR101460242 B1 KR 101460242B1 KR 20130108409 A KR20130108409 A KR 20130108409A KR 20130108409 A KR20130108409 A KR 20130108409A KR 101460242 B1 KR101460242 B1 KR 101460242B1
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adhesive film
fixing
mobile device
layer
pressure
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KR20130108409A
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Korean (ko)
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박종각
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주식회사 에스바텍
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/41—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the carrier layer

Abstract

The present invention relates to an adhesive form for fixing module of a mobile device having excellent impact resistance and water resistance, which is characterized by comprising: a base material layer made of a polyester film; an urethane water resistant layer made of an urethane water resistant resin and aerogel microparticles formed on the upper and lower surfaces of the base material layer; and an adhesive layer formed on the upper and lower surfaces of the urethane water resistant layer.

Description

내충격성과 방수 기능을 포함한 모바일 기기 모듈 고정용 점착 필름{THE ADHESIVE FILM FOR FIXING THE MODULE OF MOBILE DEVICE, WHICH HAS IMPACT RESISTANCE AND WATER RESISTANCE} BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure-sensitive adhesive film for fixing a mobile module,

본 발명은 모바일 기기 모듈 고정용 점착 필름에 관한 것으로, 더욱 상세하게는 내충격성 및 방수성이 우수한 모바일 기기 모듈 고정용 점착 필름에 관한 것이다.
The present invention relates to an adhesive film for fixing a mobile device module, and more particularly, to an adhesive film for fixing a mobile device module having excellent impact resistance and waterproofness.

최근에는 모바일 기기의 터치스크린의 화면이 대형화되는 추세에 있으며, 넓은 터치스크린을 제조하기 위해 터치스크린의 테두리에 형성되는 vessel 프레임의 폭은 점차로 얇게 제조되고 있다.In recent years, the screen of a touch screen of a mobile device has been enlarged. In order to manufacture a wide touch screen, a width of a vessel frame formed on the edge of a touch screen is gradually made thinner.

따라서, 그 배면에서 모듈을 고정하는 점착 필름의 폭도 더욱 동시에 줄어들고 있어서, 폭 변화에 따라 더욱 고기능성의 점착 필름이 필요하게 되었다. Therefore, the width of the pressure-sensitive adhesive film for fixing the module on the backside thereof is further reduced at the same time, so that a more highly functional pressure-sensitive adhesive film is required as the width changes.

쓰리엠이나 TESA 에 의해 현재 시판되고 있는 점착 필름(1)은 도 1에 나타낸 바와 같이 50㎛의 두께를 갖는 폴리에스테르 필름(11)을 기재로 하여 그 양면에 2∼3㎛ 두께의 흑색 인쇄 층(12)을 형성하고 70㎛ 이상의 두께를 갖는 아크릴 점착제(13)를 다시 양쪽으로 코팅하여 제조되는데, 이러한 종래에 점착 필름는 기재가 폴리에스테르만으로 이루어져 있어 내충격성이 나쁘다. 중량 평균 분자량이 500,000이하의 점착제를 사용하며, 또한 점착 층의 두께가 일반적으로 70㎛ 이상(시판 테이프의 경우 97㎛)으로 타발 가공시 접착제 성분이 금형 칼날에 지속적으로 묻어나와 생산성이 저하되는 문제점이 있었다. 또, 중량 평균 분자량이 500,000 이하의 아크릴 점착제를 70㎛ 이상의 두꺼운 두께로 코팅하게 되면 점착제의 흐름 현상으로 잔사가 발생하고, 터치스크린 패널 모듈 세트와 액정모듈 세트를 오염시키는 문제점도 있다. 또한 이러한 아크릴 점착제만으로는 방수기능이 떨어진다는 문제점도 있었다.As shown in Fig. 1, the pressure-sensitive adhesive film (1) currently marketed by 3M or TESA has a polyester film (11) having a thickness of 50 mu m as a base, and a black print layer 12) and coating the acrylic pressure-sensitive adhesive 13 having a thickness of 70 m or more on both sides. In this conventional adhesive film, the substrate is made of only polyester and has poor impact resistance. A pressure-sensitive adhesive having a weight average molecular weight of 500,000 or less is used, and the thickness of the adhesive layer is generally 70 占 퐉 or more (97 占 퐉 in the case of a commercial tape), and the adhesive component continuously sticks to the mold blade during the punching process, . Further, if an acryl pressure-sensitive adhesive having a weight average molecular weight of 500,000 or less is coated to a thickness of 70 μm or more, residues may be generated due to the flow of the pressure-sensitive adhesive, thereby contaminating the touch screen panel module set and the liquid crystal module set. In addition, there was also a problem that such an acryl pressure-sensitive adhesive alone is inferior in waterproof function.

또, 내충격성을 향상시키기 위해 도 2에 도시한 바와 같이 기재를 폴리에틸렌 발포체(21)로 형성하고 아크릴 점착제(23)를 상하로 도포한 제품(2)도 출시되어 있는데, 이러한 제품의 경우 내충격성은 좋아졌지만 탄성 복원력의 한계가 있었다. 또, 폴리에틸렌 발포체를 기재로 사용하는 것으로 이해 타발 가공시 1.2mm(vessel 폭) 이하의 대화면용 타발이 불가능하다. 또한, 폴리에틸렌 발포체는 타발 커팅 면으로 수압을 받으면 물이 침투해 방수효과가 떨어진다. 그리고, 조립공정 시 잘못 붙인 경우 다시 떼어 붙이려 하면 폴리에틸렌 발포체 내부가 찢어져 재 작업성이 전혀 없어 모듈 세트를 모두 폐기해야 하는 문제점이 있었다. In order to improve the impact resistance, as shown in Fig. 2, a product (2) in which a substrate is formed of a polyethylene foam (21) and an acrylic adhesive (23) is applied on both the upper and lower sides is also available. However, there was a limitation of the elastic restoring force. In addition, it is understood that polyethylene foam is used as a base material, so that it is not possible to use a large-sized padding of less than 1.2 mm (vessel width) when punching. In addition, when the polyethylene foam is subjected to water pressure by the punching cut surface, the water penetrates and the waterproof effect becomes poor. In addition, if it is erroneously attached in the assembling process, if the polyethylene foam is torn again, the inside of the polyethylene foam tears and the reworkability does not exist.

도한, 일본공개특허공보 특개 2008-250309 호에서는 아크릴 발포 층을 포함하는 접착 필름을 게시하고 있는데, 역시 방수성이 부족하였다. Japanese Patent Application Laid-Open Publication No. 2008-250309 also discloses an adhesive film containing an acrylic foam layer, but also has poor water resistance.

따라서, 이러한 점착 필름들은 모두 최근 화면 부분이 대형화되고 있는 터치스크린 등에 적합하지 못하였다.
Therefore, all of these adhesive films are not suitable for a touch screen having a recent screen portion becoming larger in size.

일본공개특허공보 특개 2008-250309 호Japanese Patent Application Laid-Open No. 2008-250309

본 발명의 목적은 접착성이 우수하여, 터치스크린 패널 모듈 및 액정 모듈과 의 접지면적이 좁은 상태에서도 탁월한 접착성을 나타내고 방수기능을 가지면서 우수한 내열성과 내충격성을 나타내는 모바일 기기 모듈 고정용 점착 필름를 제공하는 것이다.An object of the present invention is to provide a pressure-sensitive adhesive film for fixing a mobile device module, which exhibits excellent adhesion even when a ground contact area between the touch screen panel module and the liquid crystal module is small, exhibits excellent heat resistance and impact resistance, .

본 발명의 다른 목적은 인열강도 및 재 작업성이 향상된 모바일 기기 모듈 고정용 점착 필름을 제공하는 것이다.Another object of the present invention is to provide an adhesive film for fixing a module of a mobile device with improved tear strength and reworkability.

본 발명의 목적은 폴리에스테르 필름으로 이루어진 기재 층, 상기 기재 층의 상 하부 면에 형성된 우레탄 방수 수지와 에어로겔 마이크로 입자로 이루어진 우레탄 방수층, 상기 우레탄 방수층의 상 하부 면에 형성되는 점착 층으로 이루어지는 것을 특징으로 하는 방수 성능 및 내충격성이 우수한 모바일 기기 모듈 고정용 점착 필름을 제공함에 의해 달성된다. It is an object of the present invention to provide a pressure-sensitive adhesive tape comprising a base layer made of a polyester film, a urethane waterproof layer made of urethane waterproof resin and aerogel microparticles formed on the upper and lower surfaces of the base layer, and an adhesive layer formed on the upper and lower surfaces of the urethane waterproof layer Which is excellent in waterproof performance and impact resistance.

상기 우레탄 방수층에는 차광을 위한 흑색 안료를 부가하는 것을 특징으로 한다. And a black pigment for shading is added to the urethane waterproof layer.

상기 점착 층은 중량 평균 분자량 700,000 이상의 아크릴 점착제를 사용하는 것을 특징으로 한다. The pressure-sensitive adhesive layer is characterized by using an acrylic pressure-sensitive adhesive having a weight average molecular weight of 700,000 or more.

본 발명에 따른 모바일 기기 모듈 고정용 점착 필름은 터치스크린 패널 모듈및 액정 모듈과의 vessel 폭의 접지면적이 좁은 상태에서도 탁월한 접착성을 나타내고 방수기능을 갖는다. 또한, 우수한 충격강도, 인열강도 및 재 작업성을 나타낸다.
INDUSTRIAL APPLICABILITY The adhesive film for fixing a mobile device module according to the present invention exhibits excellent adhesiveness and waterproof function even when a vessel area of a vessel width of a touch screen panel module and a liquid crystal module is narrow. It also exhibits excellent impact strength, tear strength and reworkability.

도 1은 시판되는 종래 기술의 모바일 기기 모듈 고정용 점착 필름의 단면도.
도 2은 시판되는 종래 기술의 모바일 기기 모듈 고정용 점착 필름의 단면도.
도 3은 본 발명의 모바일 기기 모듈 고정용 점착 필름의 단면도.
도 4는 본 발명의 우레탄 방수층의 전자현미경 사진.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a commercially available conventional adhesive film for fixing a mobile device module. Fig.
2 is a sectional view of a commercially available prior art adhesive film for fixing a mobile device module.
3 is a sectional view of a pressure-sensitive adhesive film for fixing a mobile device module of the present invention.
4 is an electron micrograph of the urethane waterproof layer of the present invention.

이하에는, 본 발명의 바람직한 실시 예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.
Hereinafter, preferred embodiments of the present invention and physical properties of the respective components will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, And this does not mean that the technical idea and scope of the present invention are limited.

본 발명에 따른 모바일 기기 모듈 고정용 점착 필름(4)은 도 3에 도시된 단면도로부터 알 수 있는 바와 같이, 폴리에스테르 필름으로 이루어진 기재 층(41)과, 그 기재 층(41)의 상 하부 면에 형성된 우레탄 방수 수지와 탄성 에어로겔로 이루어진 우레탄 방수층(42), 그리고 상기 우레탄 방수층(42)의 상 하부 면에 형성되는 점착 층(43)으로 이루어진다.
3, the adhesive film 4 for fixing a mobile device module according to the present invention comprises a base film layer 41 made of a polyester film, A urethane waterproof layer 42 made of an urethane waterproof resin and an elastic airgel formed on the urethane waterproof layer 42, and an adhesive layer 43 formed on the upper and lower surfaces of the urethane waterproof layer 42.

상기 기재 층(41)은 본 발명에 따른 내충격성이 우수한 터치스크린 패널용 점착 필름의 기재가 되는 층으로, 폴리에스테르 필름으로 형성된다. 기재 층(41)의 두께는 10~75㎛이고, 바람직하게는 12㎛, 25㎛, 또는 50㎛ 두께의 기재를 사용한다.
The base layer (41) is a base layer of a pressure-sensitive adhesive film for a touch screen panel having excellent impact resistance according to the present invention, and is formed of a polyester film. The base layer 41 has a thickness of 10 to 75 mu m, preferably 12 mu m, 25 mu m, or 50 mu m thick.

상기 기재 층(41)의 상 하부 면에 형성되는 우레탄 방수층(32)은 아크릴이나 유리소재로 이루어진 터치스크린 윈도우 패널 등에 모두 적용가능하고, 탄성 방수 우레탄 수지와 탄성 에어로겔로 제조되어 방수 효과가 우수할 뿐 아니라 내충격성을 현저하게 향상시키는 역할을 한다.
The urethane waterproof layer 32 formed on the upper and lower surfaces of the base layer 41 can be applied to a touch screen window panel made of acrylic or glass material and is made of an elastic waterproof urethane resin and an elastic airgel, But also significantly improves impact resistance.

도 4에 본 발명의 우레탄 방수층의 전자현미경 사진을 게시하였다. 도 4에서 알 수 있는 바와 같이, 우레탄 방수 수지 내에 에어로겔 마이크로 입자가 포함되어 있어 충격을 흡수하는 역할을 한다. 에어로겔 마이크로 입자는 우레탄 수지 고형분 100중량부에 대해 10~35중량부의 양으로 포함된다. 그 이하의 양으로 포함되면 충격 강도의 향상 효과가 현저하게 나타나지 않고, 그 이상으로 포함되면 성형에 문제가 생길 수 있다.
Fig. 4 shows an electron micrograph of the urethane waterproof layer of the present invention. As can be seen from Fig. 4, the urethane waterproof resin contains airgel microparticles and serves to absorb impact. The aerogel microparticles are included in an amount of 10 to 35 parts by weight based on 100 parts by weight of the solid urethane resin. If the amount is less than the above range, the effect of improving the impact strength is not remarkably exhibited.

우레탄 방수층의 전체 두께는 50∼150㎛이다. 따라서 상 하부 층의 두께를 동일한 두께로 하는 경우에는 한 층의 두께는 25∼75㎛이다. 상 하부 층의 두께를 다르게 할 수 있으며, 이 경우에는 예를 들어 상부 우레탄 방수층의 두께는 60㎛, 하부 우레탄 방수층의 두께는 40㎛로 할 수도 있다. 또한, 이 우레탄 방수층에는 흑색 안료를 부가하여 빛이 새는 것을 방지한다. 도 1에 도시된 종래 기술의 흑색 인쇄 층의 두께는 불과 2~3㎛인데 반해, 본 발명에서는 전체 두께 50-150㎛의 우레탄 방수층에 흑색 안료를 분산시켜 더욱 완벽하게 차폐효과를 얻을 수 있다. 또한 발포체가 아니므로 인열강도가 우수하고 재 작업성이 우수하여, 가공 조립의 잘못으로 인한 불량 발생시에 손쉽게 양면 테이프를 제거한 후에 재조립할 수 있다.
The total thickness of the urethane waterproof layer is 50 to 150 mu m. Therefore, when the upper and lower layers have the same thickness, the thickness of one layer is 25 to 75 mu m. In this case, for example, the thickness of the upper urethane waterproof layer may be 60 占 퐉, and the thickness of the lower urethane waterproof layer may be 40 占 퐉. Further, a black pigment is added to the urethane waterproof layer to prevent light from leaking. The thickness of the black print layer of the prior art shown in FIG. 1 is only 2 to 3 탆, but in the present invention, the black pigment is dispersed in the urethane waterproof layer having a total thickness of 50 to 150 탆, thereby achieving a more perfect shielding effect. In addition, since it is not a foam, it has excellent tear strength and reworkability, so that it is possible to easily re-assemble after removing the double-sided tape when defective due to erroneous processing or assembly.

점착 층(43)은 상기 우레탄 방수층(42)의 상부 면과 상기 기재 층(41)의 하부 면에 형성되며, 본 발명에 따른 점착 필름이 터치스크린 패널 모듈과 액정모듈 사이에 위치하여 터치스크린 패널 모듈과 액정모듈을 접착시킬 수 있도록 하는 역할을 한다.The adhesive layer 43 is formed on the upper surface of the urethane waterproof layer 42 and the lower surface of the base layer 41. The adhesive film according to the present invention is positioned between the touch screen panel module and the liquid crystal module, And to adhere the module and the liquid crystal module.

이때, 전술한 점착 층(43)은 아크릴계 감압성 점착제(PSA, Pressure Sensitive Adhesive)로 이루어지며, 70 내지 80 마이크로미터의 두께를 갖는데, 우수한 점착성능을 나타내어 전술한 기재 층(41)과 방수 층(42)이 터치스크린 패널 모듈과 액정모듈 사이에 개재되었을 때, 터치스크린 패널 모듈 및 액정모듈의 부착면적이 좁은 경우에도 우수한 접착력을 나타내어 터치스크린 패널 모듈과 액정모듈을 견고하게 접착하는 역할을 한다.The pressure-sensitive adhesive layer 43 is made of acrylic pressure-sensitive adhesive (PSA) and has a thickness of 70 to 80 micrometers. The pressure-sensitive adhesive layer 43 exhibits excellent adhesive performance, When the touch panel module and the liquid crystal module are interposed between the touch screen panel module and the liquid crystal module, the touch panel module and the liquid crystal module exhibit excellent adhesion even when the area of the touch screen panel module and the liquid crystal module is narrow, .

전술한 점착 층(43)이 70 마이크로미터 미만으로 형성되면 점착성능이 저하되며, 80 마이크로미터를 초과하게 되면 점착제 성분이 기재 층 밖으로 흘러나오는 현상이 발생하며, 점착제의 잔사율이 증가하여 재 작업성이 저하된다.If the above-mentioned pressure-sensitive adhesive layer 43 is formed to be less than 70 micrometers, the pressure-sensitive adhesive performance deteriorates. When the pressure-sensitive adhesive layer 43 exceeds 80 micrometers, the pressure-sensitive adhesive component flows out of the base layer, The property is deteriorated.

또, 본 발명에서는 타발 가공시 점착제가 칼날에 묻지 않도록 중량 평균 분자량 700,000 이상의 아크릴 점착제를 사용하여 타발 가공 적성이 우수하다.
Further, in the present invention, an acrylic pressure-sensitive adhesive having a weight average molecular weight of 700,000 or more is used so that the pressure-sensitive adhesive does not adhere to the blade during punching, and the punching performance is excellent.

이하에서는, 본 발명에 따른 점착 필름의 물성을 실시 예를 들어 설명한다.
Hereinafter, physical properties of the pressure-sensitive adhesive film according to the present invention will be described with reference to examples.

<실시 예 1>&Lt; Example 1 >

50마이크로미터의 두께를 갖는 폴리에스테르 필름의 상 하부 면에 분자량 탄성 우레탄 방수 수지에 에어로겔과 흑색안료가 함유된 각각 30마이크로미터 두께의 우레탄 방수층을 형성하고, 상기 우레탄 방수층의 상 하부 면에, 분자량 700,000 이상의 감압성 아크릴 점착제를 각각 70마이크로미터로 도포하여 점착 층을 형성하여 점착 필름을 제조하였다. 필름 전체 두께는 250마이크로미터였다.
A urethane waterproof layer having a thickness of 30 micrometers each containing an aerogel and a black pigment in a molecular weight elastic urethane waterproof resin is formed on the upper and lower surfaces of a polyester film having a thickness of 50 micrometers, Pressure sensitive acrylic pressure sensitive adhesive of 700,000 or more was applied at 70 micrometers, respectively, to form an adhesive layer to produce an adhesive film. The total film thickness was 250 micrometers.

<비교 예 1>&Lt; Comparative Example 1 &

50 마이크로미터 두께의 폴리에스테르 필름을 기재로 사용하고, 각각 3 마이크로미터의 흑색 인쇄 층이 기재 층의 상하로 형성되고 아크릴 점착제 층이 각각 97마이크로미터로 그 상하에 도포된 3M사의 터치스크린 패널용 점착 필름(9295B)를 구비하였다. 필름 전체 두께는 250마이크로미터였다.
Using a 50 micrometer thick polyester film as a substrate, a 3 micrometer black printing layer was formed on the top and bottom of the substrate layer, and an acrylic pressure sensitive adhesive layer was applied on the top and bottom of each 97 micrometer And an adhesive film 9295B. The total film thickness was 250 micrometers.

<비교예 2>&Lt; Comparative Example 2 &

120 마이크로미터 두께의 폴리에틸렌 발포체를 기재로 사용하고, 아크릴 점착제 층이 각각 75마이크로미터로 그 상하에 도포된 TESA사의 터치스크린 패널용 점착 필름(62945)를 구비하였다. 필름 전체 두께는 250마이크로미터였다.
And a pressure-sensitive adhesive film (62945) for a touch screen panel of TESA Co., Ltd., in which a polyethylene foam having a thickness of 120 micrometers was used as a base material and an acryl pressure-sensitive adhesive layer was coated thereon with 75 micrometers above and below, respectively. The total film thickness was 250 micrometers.

전술한 실시예 1을 통해 제조된 점착 필름과 비교예 1 및 비교예 2를 통해 구비된 터치스크린 패널용 점착 필름의 점착력, 내충격성, 방수성, 타발가공 적성, 내열성, 재 작업성을 평가하여 아래 표 1에 나타내었다.The adhesive films prepared in Example 1 and Comparative Examples 1 and 2 were evaluated for adhesion, impact resistance, water resistance, punching suitability, heat resistance and reworkability of the adhesive film for a touch screen panel, Table 1 shows the results.

또한, 박리 강도와 방수시험 결과를 표 2에 게시하였다.
The peel strength and waterproof test results are also shown in Table 2.

점착력은 제조된 각각의 점착 필름의 이형 층을 제거하고 고무압착 롤러를 이용하여 2kg의 하중으로 SUS(Steel Us Stainless)판에 부착하고 30분 후에 90° 또는 180°의 각도로 SUS판으로부터 박리 시 측정되는 힘을 나타낸 것이다.Adhesive strength was measured by removing the release layer of each manufactured adhesive film and attaching it to a SUS (Steel Us Stainless) plate with a load of 2 kg using a rubber pressing roller. After peeling from the SUS plate at an angle of 90 ° or 180 ° after 30 minutes It is the force to be measured.

또한, 내충격성은 ASTM D 1794(듀폰 충격시험기) 충격테스트 방법을 이용하여 측정하였다.Also, the impact resistance was measured using ASTM D 1794 (DuPont Impact Tester) impact test method.

재 작업성은 제조된 각각의 점착 필름를 가로 2mm×세로 50mm로 절단한 후에, 절단된 점착 필름의 이형 층을 제거하여 폴리카보네이트에 부착하고, 고무압착롤러를 이용하여 2kg의 하중 및 300mm/min의 조건으로 왕복 1회 압착하여 시편을 제조하고, 제조된 시편을 23℃의 온도에서 72시간 방치하고, 70℃의 온도에서 20분간 추가로 방치한 후에 손으로 폴리카보네이트로 점착 필름를 박리하면서 폴리카보네이트의 표면에 점착제 잔사 여부 및 점착 필름이 찢어지는 빈도 수를 100회 측정하여 나타내었다.
Each of the produced adhesive films was cut to a width of 2 mm and a length of 50 mm. Then, the release layer of the cut adhesive film was removed and attached to the polycarbonate. Using a rubber pressing roller under a load of 2 kg and a condition of 300 mm / min , And the prepared specimens were left at a temperature of 23 DEG C for 72 hours and further left at a temperature of 70 DEG C for 20 minutes. Thereafter, the adhesive film was peeled off with polycarbonate by hand, and the surface of the polycarbonate And the frequency of tearing of the adhesive film was measured 100 times.

실시예 1 Example 1 비교예 1Comparative Example 1 비교예 2Comparative Example 2 점착력adhesiveness ◎ ◎ ○ ○ ○○ 내충격성Impact resistance ○ ○ × × ○○ 방수성Waterproof ◎ ◎ △ △ △△ 타발 가공성Punching workability ◎ ◎ × × ×× 내열성Heat resistance ◎ ◎ △ △ ×× 재 작업성Reworkability ◎ ◎ × × ××

◎: 우수◎: Excellent

○: 양호○: Good

△: 보통 △: Normal

×: 미흡 ×: Poor

평가항목Evaluation items 적용apply 평가조건Evaluation condition 실시예 1Example 1 비교예 1 Comparative Example 1 비교예 2Comparative Example 2 180°
박리강도
(gf/25mm)


180 °
Peel strength
(gf / 25 mm)


SUS


SUS


FaceFace 21502150 17901790 17351735 BackBack 20702070 16851685 16851685
PC
PC

FaceFace 24802480 20502050 19201920 BackBack 22902290 18201820 18501850 유리Glass FaceFace 22352235 19801980 18151815 BackBack 21352135 17601760 17901790 방수시험
(IPX7)Waterproof test
(IPX7) ABS/PMMAABS / PMMA 30분30 minutes ○○○○○○ ○○○○○○ ○○○○○○ 24시간24 hours ○○○○○○ ○○×Xx ○× ×○ × × 내충격시험Impact resistance test 200mm*500g200mm * 500g 23℃
*50%R.H.23 ℃
* 50% RH ○○○○○○○○○○ × × × × × × × × × × × × × × × × × × × × 300mm*500g300mm * 500g ○○○○○○○○○○ × × × × × × × × × × × × × × × × × × × × 400mm*500g400mm * 500g ○○○○○○○○○○ × × × × × × × × × × × × × × × × × × × × 500mm*500g500mm * 500g ○× ○× ○○ × ○ × ○ × × × × × × × × × × × × × × × × × × × ×

상기 표에서 알 수 있는 바와 같이, 본 발명의 점착 필름은 종래의 시판 점착 필름에 비해, 방수성, 내충격성, 타발 가공성, 내열성 및 재 작업성이 우수하다. 특히 방수성, 내충격성 및 타발 가공성이 우수하며, 1.0mm 이하에서도 타발 가공이 가능하며, 특히, 실제 시험결과 외곽(Vessel) 폭 0.7mm와 0.5mm에서도 타발 가공이 가능하였다.
As can be seen from the above table, the pressure-sensitive adhesive film of the present invention is superior in water resistance, impact resistance, punching workability, heat resistance and reworkability as compared with the conventional pressure-sensitive adhesive film. Particularly, it is excellent in waterproof property, impact resistance and punching workability, and punching can be performed even under 1.0 mm. In particular, in actual test results, punching was possible even in 0.7 mm and 0.5 mm widths of vessel.

본 발명의 점착 필름은 터치스크린 패널 모듈 및 액정 모듈과의 접지면적이 좁은 상태에서도 탁월한 접착성을 나타내고 우수한 내충격성 및 방수기능을 가져 모바일 기기 모듈 고정용으로 사용할 수 있다. INDUSTRIAL APPLICABILITY The adhesive film of the present invention exhibits excellent adhesiveness even when the ground contact area between the touch screen panel module and the liquid crystal module is small, and has excellent impact resistance and waterproof function, so that it can be used for fixing a mobile device module.

Claims (7)

폴리에스테르 필름으로 이루어진 기재 층, 상기 기재 층의 상 하부 면에 형성된 우레탄 방수 수지와 에어로겔 마이크로 입자로 이루어진 우레탄 방수층, 상기 우레탄 방수층의 상 하부 면에 형성되는 점착 층으로 이루어지는 것을 특징으로 하는 방수 성능이 우수한 모바일 기기 모듈 고정용 점착 필름.
A urethane waterproof layer composed of a urethane waterproof resin and aerogel microparticles formed on upper and lower surfaces of the base layer, and a pressure-sensitive adhesive layer formed on the upper and lower surfaces of the urethane waterproof layer. Good adhesive film for fixing mobile module.
제 1 항에 있어서, 상기 우레탄 방수층에는 차광을 위한 흑색 안료를 부가하는 것을 특징으로 하는 모바일 기기 모듈 고정용 점착 필름.
The adhesive film for fixing a mobile device module according to claim 1, wherein a black pigment is added to the urethane waterproof layer for light shielding.
제 1 항 또는 제 2항에 있어서, 상기 에어로겔 마이크로 입자는 우레탄 수지 고형분 100중량부에 대해 10~35중량부의 양으로 함유되는 것을 특징으로 하는 모바일 기기 모듈 고정용 점착 필름.
The adhesive film for fixing a mobile device module according to claim 1 or 2, wherein the airgel microparticles are contained in an amount of 10 to 35 parts by weight based on 100 parts by weight of the solid content of the urethane resin.
제 1 항에 있어서, 상기 점착 층은 중량 평균 분자량 700,000 이상의 아크릴 점착제를 사용하는 것을 특징으로 하는 모바일 기기 모듈 고정용 점착 필름.
The pressure-sensitive adhesive film for fixing a mobile device module according to claim 1, wherein the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive having a weight average molecular weight of 700,000 or more.
제 1 항에 있어서, 상기 폴리에스테르 필름으로 이루어진 기재 층의 두께는 23~75㎛인 것을 특징으로 하는 모바일 기기 모듈 고정용 점착 필름.
The adhesive film for fixing a mobile device module according to claim 1, wherein the thickness of the substrate layer made of the polyester film is 23 to 75 μm.
제 1 항에 있어서, 상기 우레탄 방수층의 두게는 30~60㎛인 것을 특징으로 하는 모바일 기기 모듈 고정용 점착 필름.
The adhesive film for fixing a mobile device module according to claim 1, wherein the thickness of the urethane waterproof layer is 30 to 60 탆.
제 1 항에 있어서, 상기 점착 층의 두께는 70~80㎛인 것을 특징으로 하는 모바일 기기 모듈 고정용 점착 필름.

The adhesive film for fixing a mobile device module according to claim 1, wherein the thickness of the adhesive layer is 70 to 80 占 퐉.

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KR101672467B1 (en) * 2016-05-11 2016-11-04 주식회사 이녹스 Improved impact resistant adhesive film for mobile device and manufacturing method there of
WO2016199957A1 (en) * 2015-06-11 2016-12-15 주식회사 지오스에어로젤 Composition for moisture permeation preventing film for electronic device, method for forming moisture permeation preventing film for electronic device using same, and electronic device
KR101806355B1 (en) 2016-06-22 2017-12-08 가드넥(주) Tape for waterproof, absorbing impact and shading light

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