KR20120046999A - The sticky tape for protecting surface using deep drawing - Google Patents

The sticky tape for protecting surface using deep drawing Download PDF

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KR20120046999A
KR20120046999A KR1020100108610A KR20100108610A KR20120046999A KR 20120046999 A KR20120046999 A KR 20120046999A KR 1020100108610 A KR1020100108610 A KR 1020100108610A KR 20100108610 A KR20100108610 A KR 20100108610A KR 20120046999 A KR20120046999 A KR 20120046999A
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film layer
weight
parts
deep drawing
adhesive tape
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KR1020100108610A
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Korean (ko)
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KR101228439B1 (en
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안창덕
나영수
윤영삼
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세계화학공업(주)
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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
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • 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
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
    • 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
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • 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
    • C09J2423/00—Presence of polyolefin

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)

Abstract

PURPOSE: A surface-protective adhesive tape is provided to endure against pressure of hundreds tons in case of using for a surface of deep drawing processing material, and to have excellent slipability, thereby not remaining torn, pushed, pulled, etc mark. CONSTITUTION: A surface-protective adhesive comprises: a polypropylene film layer(100) with excellent hardness of surface, consisting of polypropylene material; a polypropylene/polyethylene mixture film layer(200), which is conjugated to the bottom of the polypropylene film layer, consisting of a mixture of polyethylene and polypropylene; a polyethylene film layer(300) which is conjugated to the bottom of the polypropylene/polyethylene mixture film, consisting of polyethylene material, and having excellent elongation; and an adhesive layer(400), which is conjugated to the bottom of the polyethylene film layer, containing adhesive components.

Description

디프 드로잉（Ｄｅｅｐ ｄｒａｗｉｎｇ）용 표면보호 점착 테이프{The Sticky Tape For Protecting Surface Using Deep Drawing}The Sticky Tape For Protecting Surface Using Deep Drawing}

본 발명은 주로 싱크볼, 세탁기의 날개, 세탁기의 앞판 등 스테인리스 스틸, 혹은 도장용 강판 등의 디프 드로잉(Deep drawing) 가공시 소재의 표면보호를 위해 부착되는 디프 드로잉(deep drawing)용 표면보호 점착 테이프에 관한 것이다.  The present invention is a surface protection adhesive tape for deep drawing, which is mainly attached for protecting the surface of a material during deep drawing processing, such as a sink ball, a wing of a washing machine, a front plate of a washing machine, or stainless steel, or a steel sheet for painting. It is about.

디프 드로잉가공(deep dawing)은 평판으로부터 이음이 없는 중공용기를 만드는 대표적인 성형법으로서, 다이 표면 위에 있는 재료를 원주방향으로 줄이면서 펀치와 다이 사이를 이동시켜 측벽을 만드는 가공법이다. Deep dawing is a typical method of forming a seamless hollow container from a flat plate, and is a method of making sidewalls by moving between a punch and a die while reducing the material on the die surface in a circumferential direction.

그러나 상기의 가공법은 펀치 밑바닥에 닿는 재료가 두 축방향으로 늘어나면서 얇아지는 문제점이 발생하였다.However, the above processing method has a problem that the material that touches the bottom of the punch becomes thin as it extends in two axial directions.

이러한 문제점을 해결하기 위하여, 종래에는 디프 드로잉 가공을 할 소재의 표면보호를 위해 보호용 테이프를 부착한 후 가공공정을 거치게 되었다.In order to solve this problem, conventionally, the protective tape is attached to protect the surface of the material to be deep drawn, and then processed.

그러나 디프 드로잉 가공시 사용되는 프레스는 수백톤의 얍력으로 소재 및 소재표면의 보호용 테이프를 누르기 때문에 이러한 압력으로 인하여 보호용 테이프의 표면이 찢어지거나, 소재가 터지는 현상이 다수 발생하였다.However, the press used for deep drawing process presses the protective tape on the material and the surface of the material by several hundred tons of output force, so that the surface of the protective tape is torn or burst due to this pressure.

이러한 가혹한 조건에 견디기 위한 보호용 테이프는 일반적으로 PE를 사용하였다. Protective tape generally used PE to withstand these harsh conditions.

그러나 일반적으로 PE는 신율이 500% 정도까지 우수하여 디프 드로잉 가공은 가능하나, 가공시 마찰에 의한 보호용 테이프의 찢김 및 눌림 현상이 발생하여 소재 표면의 압입자국 및 철판터짐 현상이 발생하는 문제점이 있었다.However, in general, PE has excellent elongation of about 500%, so deep drawing processing is possible, but the tearing and squeezing of the protective tape caused by friction occurs, resulting in indentation of the surface of the material and iron plate bursting. .

이를 보완하기 위하여, 표면의 경질성이 우수한 PP 재질의 보호용 테이프를 사용하는 경우가 있었다.In order to compensate for this, there was a case where a protective tape made of PP material having excellent surface hardness was used.

그러나 종래의 PP 재질의 보호용 테이프는 표면의 미끄럼성이 좋아 찢김, 눌림, 철판 터짐 등이 발생하지는 않으나 PP 재질의 특성상 신율(Elongation)이 매우 낮아 1차 가공 후 테이프의 복원력에 의해 소재의 표면에서 보호용 테이프가 탈리되는 현상이 발생하였다.However, the protective tape made of PP material does not cause tearing, crushing or iron plate rupture due to its good sliding property, but its elongation is very low due to the characteristics of the PP material. A phenomenon in which the protective tape detached occurred.

그리고 종래 일부에서는 PE에 PP를 혼용한 제품을 생산하기도 하였다.In addition, some of the conventional products have produced a mixture of PP in PE.

그러나 E에 PP를 혼용한 제품의 물성은 PP와 PE의 수지 용해 온도가 상이하여 다량의 미혼합된 겔(fish eye)를 제어하기가 매우 어려우며, 이러한 겔들이 가공시에 소재에 압입자국을 남겨 불량률이 매우 높아지는 문제점이 있었다.However, the physical properties of PP mixed with E are very difficult to control a large amount of unmixed fish eye due to the different resin dissolution temperature of PP and PE, and these gels leave indentation marks on the material during processing. There was a problem that the defective rate is very high.

본 발명은 상기 문제점을 해결하기 위해 안출된 것으로서, 본 발명의 해결하고자 하는 과제는 디프 드로잉(Deep drawing) 가공 소재의 표면에 부착되어 수백톤의 압력에도 견딜 수 있으며, 미끄럼성이 좋아 찢김, 눌림, 압입자국이 남지 않으며, 점착성이 우수하여 소재로부터 쉽게 탈리되지 않는 디프 드로잉(deep drawing)용 표면보호 점착 테이프를 제공하기 위함이다. The present invention has been made to solve the above problems, the problem to be solved of the present invention is attached to the surface of the deep drawing (Deep drawing) processing material can withstand hundreds of tons of pressure, good slipping, tearing, pressing In order to provide a surface protection adhesive tape for deep drawing that does not leave indentation marks and is excellent in adhesiveness and is not easily detached from the material.

상기의 목적을 달성하기 위해 본 발명의 디프 드로잉(deep drawing)용 표면보호 점착 테이프은 PP 재질로 이루어져 표면의 경질성이 우수한 PP필름층과, 상기 PP필름층의 하부에 접합되며, PE 와 PP의 혼합물로 이루어지는 PP?PE 혼합필름층과, 상기 PP?PE 혼합필름층의 하부에 접합되며, PE 재질로 이루어져 신율(Elongation)이 우수한 PE필름층과, 상기 PE 필름층의 하부에 접합되며, 접착성분이 포함된 점착층을 포함하는 것을 특징으로 한다.In order to achieve the above object, the surface protection adhesive tape for deep drawing of the present invention is made of a PP material and has a PP film layer having excellent surface rigidity, and is bonded to the lower part of the PP film layer, A PP-PE mixed film layer made of a mixture, a PE film layer bonded to the lower portion of the PP-PE mixed film layer, made of PE material and excellent in elongation, and bonded to a lower portion of the PE film layer, It characterized in that it comprises an adhesive layer containing the component.

여기서, 상기 PP 필름층은 폴리프로필렌 블록 50 ~ 95 중량% 와, 프로필렌과 a-올레핀의 공중합체 엘라스토머 블록 5 ~ 50 중량% 로 이루어지는 프로필렌-a-올레핀 블록 공중합체의 PP 주제 100중량부에, 0.1~5중량부 UV 안정제, 0.1~5중량부 UV 흡수제, 0.1~5중량부 무기제를 첨가하여 이루어지고, 상기 PP?PE 혼합필름층은 PE 필름의 중합체가 5 ~ 95 중량%이고 PP 필름의 중합체가 5 ~ 95 중량%로 혼합된 조성물 100중량부에, 0.1~5중량부 UV 안정제, 0.1~5중량부 UV 흡수제, 0.1~5중량부 무기제를 첨가하여 이루어지고, 상기 PE 필름층은 에틸렌과 a-올레핀과의 공중합체로 이루어진 PE 주제 100중량부에, 0.1~5 중량부 UV 안정제, 0.1~5 중량부 UV 흡수제, 0.1~5 중량부 무기제가 첨가되어 이루어지는 것이 바람직하다. Here, the PP film layer is 50 to 95% by weight of polypropylene block, and 100 parts by weight of the PP main body of the propylene-a-olefin block copolymer composed of 5 to 50% by weight of a copolymer elastomer block of propylene and a-olefin, 0.1 to 5 parts by weight of UV stabilizer, 0.1 to 5 parts by weight of UV absorber, 0.1 to 5 parts by weight of the inorganic agent is added, the PP-PE mixed film layer is 5 to 95% by weight of the polymer of the PE film and PP film It is made by adding 0.1 to 5 parts by weight UV stabilizer, 0.1 to 5 parts by weight UV absorber, 0.1 to 5 parts by weight inorganic agent to 100 parts by weight of the composition of the polymer of 5 to 95% by weight, the PE film layer It is preferable that 0.1-5 weight part UV stabilizer, 0.1-5 weight part UV absorber, and 0.1-5 weight part inorganic agent are added to 100 weight part of PE main materials which consist of a copolymer of silver ethylene and a-olefin.

그리고 상기 PP필름층은 PP 주제 100중량부에 대해서 0.1~5 중량부 변성실리콘을 추가로 포함하되, 상기 변성실리콘에는 -NCO기를 함유하는 것이 바람직하다.       The PP film layer further includes 0.1 to 5 parts by weight of modified silicone based on 100 parts by weight of the PP main ingredient, and the modified silicone preferably contains -NCO group.

또한 상기 PP필름층의 두께는 전체 테이프 두께의 10 ~ 70 % 이고, 상기 PE필름층의 두께 또한 전체 테이프 두께의 10 ~ 70 % 인 것이 바람직하다. In addition, the thickness of the PP film layer is 10 to 70% of the total tape thickness, it is preferable that the thickness of the PE film layer is also 10 to 70% of the total tape thickness.

상기와 같은 구성의 본 발명에 따르면, 다음과 같은 효과를 기대할 수 있을 것이다.According to the present invention of the configuration described above, the following effects can be expected.

우선, 본 발명은 싱크볼, 세탁기의 날개, 세탁기의 앞판 등 스테인리스 스틸, 혹은 도장용 강판 등에 부착되어 10cm 이상의 디프 드로잉 가공시 소재의 표면을 보호하는 효과가 있다. First, the present invention is attached to a stainless steel, such as a sink ball, a wing of a washing machine, a front plate of a washing machine, or a steel sheet for painting, and has an effect of protecting the surface of the material during deep drawing processing of 10 cm or more.

그리고 본 발명은 재질의 경질성이 우수하고, 미끄럼성이 좋아 찢김, 눌림, 터짐 현상이 발생하지 않는 이점이 있다.In addition, the present invention has the advantage that the rigidity of the material is excellent, the sliding property is not good, tearing, crushing, bursting does not occur.

또한, 본 발명은 점착성이 우수하고, 신율(Elongation)이 높아서 디프 드로잉 1차 가공을 한 후에도 가공 성형물의 표면으로부터 테이프가 쉽게 탈리되지 않아 2차, 3차 가공이 가능한 이점이 있다.In addition, the present invention has an advantage in that the tape is not easily detached from the surface of the processed molding even after deep drawing primary processing due to excellent adhesiveness and high elongation, so that secondary and tertiary processing can be performed.

그리고 본 발명은 PP 필름층과 PE 필름층 사이에 PP?PE 혼합층을 접합한 3층 필름으로 제작하여, 디프 드로잉(deep drawing) 가공 상태가 우수하고 디프 드로잉 가공 후 소재 표면에 압입자국이 남지 않아 불량률을 낮추는 효과가 있다.In addition, the present invention is made of a three-layer film in which a PP-PE mixed layer is bonded between the PP film layer and the PE film layer, so that deep drawing processing is excellent and no indentation marks remain on the surface of the material after deep drawing processing. It is effective to lower the defective rate.

도1 은 본 발명의 바람직한 실시예에 따른, 디프 드로잉(deep drawing)용 표면보호 점착 테이프의 단면도.1 is a cross-sectional view of a surface protection adhesive tape for deep drawing in accordance with a preferred embodiment of the present invention.

이하 첨부된 도면을 참고로 본 발명의 바람직한 실시예에 대하여 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

먼저, 도 1은 본 발명의 바람직한 실시예에 따른 디프 드로잉(deep drawing)용 표면보호 점착 테이프의 단면도이다. First, Figure 1 is a cross-sectional view of a surface protection adhesive tape for deep drawing according to a preferred embodiment of the present invention.

도시된 바와 같이 본 발명의 디프 드로잉(deep drawing)용 표면보호 점착 테이프는 PP 필름층(100), PP?PE 혼합필름층(200), PE 필름층(300), 점착층(400)으로 이루어진다.As shown, the surface protection adhesive tape for deep drawing of the present invention includes a PP film layer 100, a PP-PE mixed film layer 200, a PE film layer 300, and an adhesive layer 400. .

우선 디프 드로잉가공(deep dawing) 이란 평판으로부터 이음이 없는 중공용기를 만드는 대표적인 성형법으로서, 다이 표면 위에 있는 재료를 원주방향으로 줄이면서 펀치와 다이 사이를 이동시켜 측벽을 만드는 가공법이다. First, deep dawing is a typical molding method for making a seamless hollow container from a flat plate. A method of forming a sidewall by moving a punch and a die while reducing the material on the die surface in a circumferential direction.

본 발명의 디프 드로잉(deep drawing)용 표면보호 점착 테이프는 이러한 디프 프로잉(Deep drawing) 가공 소재의 표면에 부착되어, 소재의 표면 보호를 위하여 사용된다.The surface protective adhesive tape for deep drawing of the present invention is attached to the surface of such deep drawing processed material and used for protecting the surface of the material.

먼저 PP 필름층(100)에 대해 설명하고자 한다.First, the PP film layer 100 will be described.

상기 PP 필름층(100)은 최상위에 형성되는 층으로서, PP 재질로 이루어져 표면의 경질성이 우수한 층이다.The PP film layer 100 is a layer formed on the top, made of a PP material is a layer having excellent surface rigidity.

일반적으로 PP(Polypropylene)은 프로필렌의 종합으로 얻을 수 있는 합성폴리머로서, 강도가 높고 가벼운 이점이 있다.In general, PP (Polypropylene) is a synthetic polymer that can be obtained from the synthesis of propylene, and has advantages of high strength and light weight.

이러한 PP(Polypropylene) 재질의 필름층은 파열강도가 높고 내열성이 우수하다.The PP (polypropylene) film layer has a high burst strength and excellent heat resistance.

따라서 최상위에 위치한 상기 PP 필름층(100)은 디프 프로잉(Deep drawing) 가공시 수백톤의 압력이 가해지더라도 소재의 표면에 압입 자국이나, 눌림 현상이 발생하지 않는다.Therefore, the PP film layer 100 located at the top does not have an indentation or pressing phenomenon on the surface of the material even when a pressure of several hundred tons is applied during deep drawing processing.

특히 상기 PP 필름층(100)은 미끄럼성이 좋아 찢어짐이나 터짐 현상이 생기지 않게 된다.In particular, the PP film layer 100 is not slippery good tearing or bursting phenomenon.

바람직하게는 PP 필름층(100)의 두께는 전체 테이프 두께의 70 % 이하인 것이 적절하며, 보다 바람직하게는 10 ~70 % 를 차지하는 것이 바람직하며, 이에 대해서는 아래에서 실시예와 비교예를 들어 자세하게 설명하기로 한다.Preferably, the thickness of the PP film layer 100 is appropriately 70% or less of the total tape thickness, more preferably occupies 10 to 70%, which will be described in detail with reference to Examples and Comparative Examples below. Let's do it.

그리고 상기 PP 필름층은 폴리프로필렌 블록 50 ~ 95 중량% 와, 프로필렌과 a-올레핀의 공중합체 엘라스토머 블록 5 ~ 50 중량% 로 이루어지는 프로필렌-a-올레핀 블록 공중합체의 PP 주제 100중량부에, 0.1~5중량부 UV 안정제, 0.1~5중량부 UV 흡수제, 0.1~5중량부 무기제(TiO2, CaCO3 등)를 첨가하여 이루어지는 것이 바람직하다.And the PP film layer is 50 to 95% by weight of polypropylene block, 100 parts by weight of the PP main material of the propylene-a-olefin block copolymer consisting of 5 to 50% by weight of copolymer elastomer block of propylene and a-olefin, 0.1 It is preferable to add -5 weight part UV stabilizer, 0.1-5 weight part UV absorber, and 0.1-5 weight part inorganic agent (TiO2, CaCO3 etc.).

여기서, 첨가제는 모두 PP 주제 100중량부 대비 5중량부 이하로 첨가되는 데, 이는 5 중량부 이상 첨가하면 필름 수지와의 혼합성이 떨어져 외부의 조건(빛, 열, 가공압 등)에 의해 가공성이 나빠지기 때문이다.Here, the additives are all added in an amount of 5 parts by weight or less relative to 100 parts by weight of the PP main body, which is added when 5 parts by weight or more is poor in blendability with the film resin, and is processed by external conditions (light, heat, processing pressure, etc.). Because it gets worse.

특히 점착제와의 부착면에서는 점착제의 탈리를 발생시켜 가공물의 표면에 점착제의 오염을 유발할 수 있다.In particular, the adhesion surface with the adhesive may cause detachment of the adhesive to cause contamination of the adhesive on the surface of the workpiece.

그리고 상기 PP 필름층에는 딥드로잉시 발생되는 마찰을 줄이기 위해 소량의 변성실리콘과 경화제를 주입한다.In addition, a small amount of modified silicon and a curing agent are injected into the PP film layer to reduce friction generated during deep drawing.

여기서, 변성실리콘은 PP 주제 100중량부에 대해서, 0.1~5 중량부 변성실리콘이 주입된다.Herein, the modified silicone is injected with 0.1 to 5 parts by weight of modified silicone based on 100 parts by weight of the PP main ingredient.

상기 변성실리콘은 기능성 기를 가지고 있어야 하며,(ex. 신에츠의 KBM-9007)은 특히 -NCO기를 함유하고 있어 반응성이 우수하다. The modified silicone should have a functional group (ex. Shin-Etsu KBM-9007) is particularly excellent because it contains -NCO group.

이러한 반응성 기는 수분, 이중결합과 강력하고 빠른 결합을 이루기 때문에 PP 원료에 우수한 결합성을 가지며, 이러한 결합성으로 인해 외부로 방출되어 오염을 일으키지 않으며, 마찰력을 감소시켜 우수한 가공성을 확보할 수 있다. Since the reactive groups form strong and fast bonds with moisture and double bonds, the reactive groups have excellent binding properties to the PP raw material, and due to such binding properties, they are not released to the outside and cause contamination, thereby reducing friction and securing excellent processability.

다음은 PP?PE 혼합필름층(200)에 대해 설명하기로 한다.Next, the PP-PE mixed film layer 200 will be described.

상기 PP?PE 혼합필름층(200)은 상기 PP필름층(100)의 하부에 접합되며, PE 와 PP의 혼합물로 이루어진다.The PP-PE mixed film layer 200 is bonded to the lower portion of the PP film layer 100, made of a mixture of PE and PP.

이러한 PP?PE 혼합필름층(200)은 녹는점이 낮은 PE가 용융되어 PP를 결합시킨 구조로서, PP와 PE를 적절한 비율로 혼합하여 가공한다.The PP-PE mixed film layer 200 is a structure in which a low melting point PE is melted to combine PP, and the PP and PE are mixed and processed at an appropriate ratio.

여기서 PP?PE 혼합필름층(200)은 PP 필름층(100)과 후술할 PE 필름층(300) 사이에 형성되어, PP 필름층(100)과 PE 필름층(300)의 접합을 위한 목적으로 사용된다.The PP-PE mixed film layer 200 is formed between the PP film layer 100 and the PE film layer 300 to be described later, for the purpose of bonding the PP film layer 100 and the PE film layer 300. Used.

또한 상기 PP?PE 혼합필름층(200)은 표면강도가 높아서 흠집이 잘 나지 않으며, 쉽게 마모되지 않는 이점이 있다.In addition, the PP-PE mixed film layer 200 has a high surface strength, so it does not scratch well, and has an advantage of not being easily worn.

그리고 상기 PP?PE 혼합필름층(200)은 PE 필름의 중합체가 5 ~ 95 중량%이고 PP 필름의 중합체가 5 ~ 95 중량%로 혼합된 조성물 100중량부에, 0.1~5중량부 UV 안정제, 0.1~5중량부 UV 흡수제, 0.1~5중량부 무기제(TiO2, CaCO3 등)를 첨가하여 이루어지는 것이 바람직하다.And the PP-PE mixed film layer 200 is 5 to 95% by weight of the polymer of the PE film and 100 parts by weight of the composition of the polymer of 5 to 95% by weight of the PP film, 0.1 to 5 parts by weight UV stabilizer, It is preferable to add 0.1-5 weight part UV absorbers and 0.1-5 weight part inorganic agents (TiO2, CaCO3 etc.).

다음은 PE 필름층(300)에 대해 설명하고자 한다.Next, the PE film layer 300 will be described.

상기 PE 필름층(300)은 상기 PP?PE 혼합필름층(200)의 하부에 접합되며, PE 재질로 이루어져 신율(Elongation)이 우수하다.The PE film layer 300 is bonded to the lower portion of the PP-PE mixed film layer 200, made of a PE material is excellent in elongation (Elongation).

일반적으로 PE(Polyethylene)은 에틸렌을 중합한 합성 폴리머로서, 가볍고, 유연성이 뛰어나다.Generally, polyethylene (PE) is a synthetic polymer obtained by polymerizing ethylene, and is light and excellent in flexibility.

특히, PE 는 신율(Elongation)이 약 500% 정도로 매우 우수하여, 잡아당겼을때 잘 늘어나며, 찢김 현상이 덜하다.In particular, PE has a very good elongation of about 500%, stretches well when pulled out, and less tearing.

본 발명의 PE 층은 일반적으로 LDPE, LLDPE, HDPE 등과 이들의 혼합물로써 이루어진다.The PE layer of the present invention generally consists of LDPE, LLDPE, HDPE and the like and mixtures thereof.

그리고 PE 층의 두께는 전체 테이프의 두께의 70% 이하인 것이 적절하며, 보다 바람직하게는 10 ~ 70 % 으로 이루어지며, 이에 대해서는 아래에서 실시예와 비교예를 들어 자세하게 설명하기로 한다.And it is appropriate that the thickness of the PE layer is not more than 70% of the thickness of the entire tape, more preferably made of 10 to 70%, which will be described in detail with examples and comparative examples below.

바람직하게는 상기 PE 필름층은 에틸렌과 a-올레핀과의 공중합체로 이루어진 PE 주제 100중량부에, 0.1~5중량부 UV 안정제, 0.1~5중량부 UV 흡수제, 0.1~5중량부 무기제(TiO2, CaCO3 등)를 첨가하여 이루어진다.Preferably, the PE film layer is 100 parts by weight of a PE main material consisting of a copolymer of ethylene and a-olefin, 0.1 to 5 parts by weight UV stabilizer, 0.1 to 5 parts by weight UV absorber, 0.1 to 5 parts by weight inorganic ( TiO2, CaCO3, etc.) is added.

여기서, 상기 첨가제는 모두 PE 주제 100중량부 대비 5중량부 이하로 첨가하는 데, 이는 5 중량부 이상 첨가하면 필름 수지와의 혼합성이 떨어져 외부의 조건(빛, 열, 가공압 등)에 의해 가공성이 나빠지기 때문이다.Here, the additives are all added in an amount of 5 parts by weight or less relative to 100 parts by weight of PE main body, which is added by 5 parts by weight or more due to the poor compatibility with the film resin due to external conditions (light, heat, processing pressure, etc.) This is because workability deteriorates.

특히 점착제와의 부착면에서는 점착제의 탈리를 발생시켜 가공물의 표면에 점착제의 오염을 유발할 수 있다.In particular, the adhesion surface with the adhesive may cause detachment of the adhesive to cause contamination of the adhesive on the surface of the workpiece.

다음은 점착층(400)에 대해 살펴보기로 한다.Next, the adhesive layer 400 will be described.

상기 점착층(400)은 상기 PE 필름층(300)의 하부에 접합되며, 접착성분이 포함된다.The adhesive layer 400 is bonded to the lower portion of the PE film layer 300, and includes an adhesive component.

바람직하게는 상기 점착층(400)은 고무계, 아크릴계, 실리콘계 등으로 이루어져 있으며, 내열, 응집력이 우수한 아크릴계가 주로 사용된다. Preferably, the pressure-sensitive adhesive layer 400 is made of rubber, acrylic, silicone, and the like, and acrylic, which is excellent in heat resistance and cohesion, is mainly used.

이하, 본 발명의 구체적인 실시예, 비교예에 의거 상세하게 살펴보기로 한다.      Hereinafter, based on the specific examples, comparative examples of the present invention will be described in detail.

아래에서는 본 발명의 디프 드로잉(deep drawing)용 표면보호 점착 테이프의 각 필름층의 두께 비율을 달리 제작하여, 도장용 강판에 부착한 후 디프 드로잉(Deep drawing) 가공을 실시해보았다.Below, the thickness ratio of each film layer of the surface protection adhesive tape for deep drawing of this invention was produced differently, and it attached to the coating steel plate, and performed deep drawing processing.

아래 표1은 디프 드로잉(deep drawing)용 표면보호 점착 테이프의 각 필름층의 두께의 비율을 달리하여 제조한 수치표이고, 표2는 디프 드로잉 가공을 한 후의 가공성과, 도장용 강판의 표면상태, 필름층의 상태를 나타내는 결과표이다.Table 1 below is a numerical table prepared by varying the thickness ratio of each film layer of the surface protection adhesive tape for deep drawing, Table 2 is the workability after the deep drawing process, the surface state of the steel sheet for coating It is a result table which shows the state of a film layer.

두께%thickness% PP 필름층PP film layer PP?PE혼합필름층 PP-PE Mixed Film Layer PE 필름층PE film layer 실시예1Example 1 7070 1010 2020 실시예2Example 2 2020 1010 7070 실시예3Example 3 3535 3030 3535 실시예4Example 4 4040 3030 3030 실시예5Example 5 1515 7070 1515 실시예6Example 6 1010 2020 7070 비교예1Comparative Example 1 8080 1010 1010 비교예2Comparative Example 2 1010 1010 8080 비교예3Comparative Example 3 100100 00 00 비교예4Comparative Example 4 00 00 100100 비교예5Comparative Example 5 00 100100 00

실험결과Experiment result 디프드로잉 가공성Deep Drawing Machinability 가공 후 강판의 상태State of Steel Sheet After Processing 필름층의 상태State of film layer 실시예1Example 1 양호Good 양호Good 양호Good 실시예2Example 2 양호Good 양호Good 양호Good 실시예3Example 3 양호Good 양호Good 양호Good 실시예4Example 4 양호Good 양호Good 양호Good 실시예5Example 5 양호Good 양호Good 양호Good 실시예6Example 6 양호Good 양호Good 양호Good 비교예1Comparative Example 1 들뜸Uplifting 양호Good 양호Good 비교예2Comparative Example 2 들뜸Uplifting 양호Good 찢김Tearing 비교예3Comparative Example 3 들뜸Uplifting 압입발생Indentation 양호Good 비교예4Comparative Example 4 들뜸Uplifting 압입발생Indentation 찢김Tearing 비교예5Comparative Example 5 들뜸Uplifting 압입발생Indentation 바스러짐Crumb

실시예 1 내지 실시예 6까지는 PP 필름층의 두께가 전체 테이프의 10 ~ 70 % 이하이고, PE 필름층의 두께가 전체 테이프의 10 ~ 70 % 이하로 구성되어 디프 드로잉 가공 후에도 필름층의 상태가 양호하고, 도장용 강판 표면의 압입이나 주름 발생이 없었으며, 테이프의 외관도 양호하였다.In Examples 1 to 6, the thickness of the PP film layer is 10 to 70% or less of the entire tape, and the thickness of the PE film layer is 10 to 70% or less of the entire tape, so that the state of the film layer is maintained even after deep drawing processing. It was satisfactory, and there was no indentation or wrinkle generation on the surface of the coated steel sheet, and the appearance of the tape was also good.

이에 반해 비교예 1은 PP 필름층의 두께가 전체 테이프 두께의 80%를 차지함으로써 PP 필름층의 강성이 높아 가공 후 점착제의 응집력이 PP 필름층의 수축성을 극복하지 못하고 들뜨는 현상이 발생하였다.On the contrary, in Comparative Example 1, since the thickness of the PP film layer occupies 80% of the total tape thickness, the rigidity of the PP film layer is high, and the cohesive force of the pressure-sensitive adhesive after processing does not overcome the shrinkage of the PP film layer.

그리고 비교예 2는 PE층의 두께가 전체 테이프 두께의 80% 를 차지함으로써 적절한 가공성을 나타내기 못하고 들뜨는 현상이 발생하였다. And in the comparative example 2, since the thickness of PE layer occupies 80% of the whole tape thickness, the phenomenon which floated without showing appropriate workability occurred.

특히 비교예 3은 PP 단독필름층이 사용된 것으로 PP 필름층의 강성으로 인해 강판의 표면에 압입이 발생되었다. In particular, in Comparative Example 3, the PP sole film layer was used, and the indentation occurred on the surface of the steel sheet due to the rigidity of the PP film layer.

또한 PE 필름층이 100%가 사용된 비교예 4는 가공불량, 소재 압입발생과 필름층이 가공압을 견디지 못하고 찢어지는 현상이 발생하였으며, 비교예 5의 PP?PE혼합필름층은 PP 와 PE의 완전 혼합이 불가능하여 가공 후 바스러지는 현상이 발생하였다.In addition, in Comparative Example 4 in which the PE film layer was used at 100%, processing defects, material indentation, and the film layer could not tolerate the processing pressure were torn, and the PP-PE mixed film layer of Comparative Example 5 was PP and PE. It was impossible to mix completely so that the chipping after processing occurred.

이와 같은 실험결과 본 발명의 디프 드로잉(deep drawing)용 표면보호 점착 테이프은 PP 필름층의 두께와, PE 필름층의 두께는 전체 테이프 두께의 10~70%를 차지하는 것이 가장 적합한 가공성을 가짐을 알 수 있었다. As a result of this experiment, the surface protective adhesive tape for deep drawing of the present invention has the most suitable processability when the thickness of the PP film layer and the thickness of the PE film layer occupy 10 to 70% of the total tape thickness. there was.

이상에서 설명한 본 발명은 전술한 실시 예 및 첨부한 도면에 의해 한정되지 않으며, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서, 치환, 변형 및 변환이 가능하다는 것을 본 발명이 속하는 기술 분야에서, 통상의 지식을 가진 자에게 있어서 명백할 것이다.The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and in the technical field to which the present invention pertains that substitutions, modifications, and conversions can be made without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

100: PP 필름층
200: PP?PE 혼합필름층
300; PE 필름층
400: 점착층100: PP film layer
200: PP-PE mixed film layer
300; PE film layer
400: adhesive layer

Claims (5)

디프 드로잉(deep drawing)용 표면보호 점착 테이프에 있어서,
PP 재질로 이루어져 표면의 경질성이 우수한 PP필름층;
상기 PP필름층의 하부에 접합되며, PE 와 PP의 혼합물로 이루어지는 PP?PE 혼합필름층;
상기 PP?PE 혼합필름층의 하부에 접합되며, PE 재질로 이루어져 신율(Elongation)이 우수한 PE필름층; 및
상기 PE 필름층의 하부에 접합되며, 접착성분이 포함된 점착층;
을 포함하는 것을 특징으로 하는 디프 드로잉(deep drawing)용 표면보호 점착 테이프.In the surface protection adhesive tape for deep drawing,
PP film layer made of PP material and excellent surface rigidity;
A PP-PE mixed film layer bonded to a lower portion of the PP film layer and formed of a mixture of PE and PP;
A PE film layer bonded to the lower portion of the PP? PE mixed film layer and made of PE material and having excellent elongation; And
An adhesive layer bonded to a lower portion of the PE film layer and including an adhesive component;
Surface protection adhesive tape for deep drawing characterized in that it comprises a. 제1항에 있어서,
상기 PP 필름층은 폴리프로필렌 블록 50 ~ 95 중량% 와, 프로필렌과 a-올레핀의 공중합체 엘라스토머 블록 5 ~ 50 중량% 로 이루어지는 프로필렌-a-올레핀 블록 공중합체의 PP 주제 100중량부에, 0.1~5중량부 UV 안정제, 0.1~5중량부 UV 흡수제, 0.1~5중량부 무기제를 첨가하여 이루어지고,
상기 PP?PE 혼합필름층은 PE 필름의 중합체가 5 ~ 95 중량%이고 PP 필름의 중합체가 5 ~ 95 중량%로 혼합된 조성물 100중량부에, 0.1~5중량부 UV 안정제, 0.1~5중량부 UV 흡수제, 0.1~5중량부 무기제를 첨가하여 이루어지고,
상기 PE 필름층은 에틸렌과 a-올레핀과의 공중합체로 이루어진 PE 주제 100중량부에, 0.1~5 중량부 UV 안정제, 0.1~5 중량부 UV 흡수제, 0.1~5 중량부 무기제가 첨가되어 이루어지는 것을 특징으로 하는 디프 드로잉(deep drawing)용 표면보호 점착 테이프.The method of claim 1,
The PP film layer is 0.1 to 100 parts by weight of the PP main body of the propylene-a-olefin block copolymer composed of 50 to 95% by weight of a polypropylene block and 5 to 50% by weight of a copolymer elastomer block of propylene and a-olefin. 5 parts by weight of UV stabilizer, 0.1 to 5 parts by weight of UV absorber, 0.1 to 5 parts by weight of the inorganic agent is added,
In the PP-PE mixed film layer, the polymer of the PE film is 5 to 95% by weight and the polymer of the PP film is mixed to 100 parts by weight of the composition, 0.1 to 5 parts by weight UV stabilizer, 0.1 to 5 parts by weight. Made by adding a secondary UV absorber, 0.1 to 5 parts by weight of an inorganic agent,
The PE film layer is composed of 0.1 to 5 parts by weight of UV stabilizer, 0.1 to 5 parts by weight of UV absorber, 0.1 to 5 parts by weight of inorganic agent is added to 100 parts by weight of PE main body consisting of a copolymer of ethylene and a-olefin. Surface protection adhesive tape for deep drawing. 제2항에 있어서,
상기 PP필름층은 PP 주제 100중량부에 대해서 0.1~5 중량부 변성실리콘을 추가로 포함하되,
상기 변성실리콘에는 -NCO기를 함유하는 것을 특징으로 하는 디프 드로잉(deep drawing)용 표면보호 점착 테이프.The method of claim 2,
The PP film layer further includes 0.1 to 5 parts by weight of modified silicone, based on 100 parts by weight of PP main body,
Surface-modified adhesive tape for deep drawing, characterized in that the modified silicon contains -NCO group. 제1항에 있어서,
상기 PP필름층의 두께는 전체 테이프 두께의 10 ~ 70 % 이고, 상기 PE필름층의 두께 또한 전체 테이프 두께의 10 ~ 70 % 인 것을 특징으로 하는 디프 드로잉(deep drawing)용 표면보호 점착 테이프.The method of claim 1,
The thickness of the PP film layer is 10 to 70% of the total tape thickness, and the thickness of the PE film layer is also 10 ~ 70% of the total tape thickness, the surface protection adhesive tape for deep drawing. 제1항에 있어서,
상기 PP필름층은 PP 주제 100중량부에 대해서 0.1~5 중량부 변성실리콘을 추가로 포함하되,
상기 변성실리콘에는 -NCO기를 함유하는 것을 특징으로 하는 디프 드로잉(deep drawing)용 표면보호 점착 테이프.The method of claim 1,
The PP film layer further includes 0.1 to 5 parts by weight of modified silicone, based on 100 parts by weight of PP main body,
Surface-modified adhesive tape for deep drawing, characterized in that the modified silicon contains -NCO group.
KR1020100108610A 2010-11-03 2010-11-03 The Sticky Tape For Protecting Surface Using Deep Drawing KR101228439B1 (en)

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