KR100319486B1 - Automotive coating protection sheet - Google Patents
Automotive coating protection sheet Download PDFInfo
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- KR100319486B1 KR100319486B1 KR1019940038786A KR19940038786A KR100319486B1 KR 100319486 B1 KR100319486 B1 KR 100319486B1 KR 1019940038786 A KR1019940038786 A KR 1019940038786A KR 19940038786 A KR19940038786 A KR 19940038786A KR 100319486 B1 KR100319486 B1 KR 100319486B1
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- adhesive
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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
- C09J7/22—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
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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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
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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
- C09J7/201—Adhesives in the form of films or foils characterised by their carriers characterised by the release coating composition on the carrier layer
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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
- C09J7/22—Plastics; Metallised plastics
-
- 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
- C09J2203/306—Applications of adhesives in processes or use of adhesives in the form of films or foils for protecting painted surfaces, e.g. of cars
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
본 발명은 자동차 도장 보호용 시이트에 관한 것으로서, 더욱 상세하게는 폴리올레핀 기재층에 박리층과 접착층을 형성시켜 이루어지되 도장 완성차의 형태에 맞추어서 접착 또는 피복하여 형성됨으로써 자동차의 도장면을 일시적으로 보호하는 기능을 가진 자동차 도장 보호용 시이트에 관한 것이다.The present invention relates to a sheet for protecting a car paint, and more particularly, to form a peeling layer and an adhesive layer on a polyolefin base layer, and is formed by adhering or coating in accordance with the shape of a finished car to temporarily protect a painted surface of a car. It relates to a car paint protection sheet having a.
Description
본 발명은 자동차 도장 보호용 시이트에 관한 것으로서, 더욱 상세하게는 폴리올레핀 기재층에 박리층과 접착층을 형성시켜 이루어지되 도장 완성차의 형태에 맞추어서 접착 또는 피복하여 형성됨으로써 자동차의 도장면을 일시적으로 보호하는 기능을 가진 자동차 도장 보호용 시이트에 관한 것이다.The present invention relates to a sheet for automobile paint protection, and more particularly, to form a peeling layer and an adhesive layer on a polyolefin base layer, but is formed by adhering or coating in accordance with the shape of the finished car to temporarily protect the painted surface of the car. It relates to a car paint protection sheet having a.
현재, 도장이 완성된 자동차는 출고 전 장거리 운송 과정에서 자동차 도장면이 산성비나 분진 등 각종 부유물질 또는 충돌물에 의해 손상되거나 퇴색, 변색되는 경우가 발생하고 있다.At present, the finished car is often damaged, discolored, or discolored by various floating materials such as acid rain, dust, or collisions in the long distance transportation process before shipment.
따라서, 도장이 완성된 자동차를 운송수단을 통해서 국내외의 장거리 이동시에는 도장의 보호 조치가 필수적이다.Therefore, the protection of the painting is essential for long-distance travel at home and abroad through a vehicle for the completed painting.
이에 대한, 종래 자동차 도장 보호 방법으로는 페인팅한 자동차나 자동차부품을 왁스를 포함하는 20 ∼ 40 ㎛두께의 피복물로 피복하는 페인트막 보호조치가 알려져 있으며, 또한 기재상에 감압성 접착층을 형성시킨 각종 유형의 표면보호 시이트가 공지되어 있다.As a conventional automobile coating protection method, a paint film protection measure for covering a painted car or automobile part with a coating having a thickness of 20 to 40 μm containing wax is known, and various pressure-sensitive adhesive layers are formed on a substrate. Types of surface protective sheets are known.
그러나, 페인트막 보호 조치는 왁스 피복물을 균일한 두께로 형성시키기가 어렵기 때문에 페인트막의 균일한 보호 효과를 얻을 수 없으며 왁스 피복물이 엉기기 쉬우며 산성비에 대한 내성이 약하다. 또한, 왁스의 일부가 페인트막 내로 침투하여 변색 등 기타 결함을 야기시킬 수 있으며, 왁스 피복물의 형성이나 제거시에 많은 노력이 필요하고 용매사용 및 폐액 처리로 인한 환경문제를 야기시키기가 쉽다.However, since the paint film protection measures are difficult to form the wax coating with a uniform thickness, it is impossible to obtain a uniform protective effect of the paint film, the wax coating is easily entangled, and the resistance to acid rain is weak. In addition, a part of the wax may penetrate into the paint film and cause other defects such as discoloration, and much effort is required when forming or removing the wax coating, and it is easy to cause environmental problems due to solvent use and waste solution treatment.
그리고, 도장표면 보호시이트의 경우는 아크릴 감압성 접착층을 포함하는 보호시이트가 제안된 바 있는데, 이 경우에 있어서는 장기간 치장 후 도장 변색의 우려와 접착력의 조절 등에 문제가 있다. 이로인해 장기간의 운송도중에 온도가 증가함에 따라 자동차에 도포된 시이트의 접착강도가 증가하여 운송후에 시이트분리가 어려운 문제가 있다.In the case of the coated surface protective sheet, a protective sheet including an acrylic pressure-sensitive adhesive layer has been proposed. In this case, there is a problem of discoloration of paint after coating for a long time and control of adhesive strength. As a result, the adhesive strength of the sheet applied to the vehicle increases as the temperature increases during long-term transportation, which makes it difficult to separate the sheet after transportation.
또한, 대한민국특허출원 제92-10559호에서는 상기 문제점을 해결하기 위해서 동적 탄성률이 60 ℃에서 2 × 105∼ 7 × 106dyn/㎠인 고무계 감압성 접착제가 형성된 기재를 포함하는 자동차 페인트막 보호시이트를 개발하였는데, 이 경우에는 롤(roll) 상태에서의 이형성이 불량하여 작업자의 작업능률을 저하시키고 부착시필름의 엉겨붙음이 생기거나 필요한 부분만을 절단하는 데 어려움이 있다.In addition, Korean Patent Application No. 92-10559 discloses an automobile paint film protection comprising a substrate having a rubber-based pressure-sensitive adhesive having a dynamic modulus of 2 × 10 5 to 7 × 10 6 dyn / cm 2 at 60 ° C. to solve the above problem. The sheet was developed, in which case the releasability in the roll (roll) is poor to reduce the work efficiency of the operator and there is a difficulty in tangling the film or cutting only necessary parts when attaching.
따라서, 본 발명자들은 상기 종래의 자동차 도장보호 방법들의 문제점을 해결하기 위해 연구 노력한 결과, 도장막의 손상이나 변색을 효과적으로 막아주고 온도상승 조건에서도 접착력이 균일하게 유지되며 이형성이 개선되어 작업성이 용이한 본 발명의 자동차 도장보호용 시이트를 개발하였다.Therefore, the inventors of the present invention have made efforts to solve the problems of the conventional automotive coating protection methods, effectively prevent damage or discoloration of the coating film, even in the temperature rise conditions, the adhesive strength is maintained uniformly and the releasability is improved to facilitate workability The automobile paint protection sheet of the present invention was developed.
본 발명은 폴리올레핀 필름기재층의 양면에 각각 감압 접착제와 배면처리제를 도포하여 형성시킴으로써 자동차 도장막을 효과적으로 보호하며 이형성이 개선된 자동차 도장보호용 시이트를 제공하는 데 그 목적이 있다.An object of the present invention is to provide an automobile coating protective sheet which effectively protects an automobile paint film by forming a pressure-sensitive adhesive and a backing agent on both sides of a polyolefin film base layer, and improves releasability.
이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
본 발명은 자동차 도장 보호용 시이트에 있어서, 폴리올레핀 기재층(1)과 이 기재층(1) 한면에 배면처리제를 도포하여 형성시킨 박리층(2) 및 상기 기재층(1)의 다른 한쪽면에 감압 접착제를 도포하여 형성시킨 접착층(3)으로 이루어진 것을 그 특징으로 한다.In the sheet for automobile coating protection, the present invention provides a polyolefin substrate layer 1 and a release layer 2 formed by applying a backing agent to one surface of the substrate layer 1 and the other side of the substrate layer 1. The adhesive layer 3 is formed by applying an adhesive.
이와같은 본 발명을 더욱 상세히 설명하면 다음과 같다.Referring to the present invention in more detail as follows.
본 발명은 자동차 도장 보호용 시이트에 관한 것으로서, 본 발명에 의해 제조된 시이트의 형태는 첨부도면 제 1 도에 나타낸 바와 같이 기재층(1), 박리층(2) 및 접착층(3)으로 이루어진다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet for automobile coating protection, wherein the form of the sheet produced by the present invention comprises a base layer 1, a peeling layer 2, and an adhesive layer 3, as shown in FIG.
상기 기재층(1)은 폴리에틸렌과 폴리프로필렌을 2 : 8 ∼ 7 : 3 중량비로 혼합하여 사용할 수 있다.The base material layer 1 may be used by mixing polyethylene and polypropylene in a weight ratio of 2: 8 to 7: 3.
여기서 폴리에틸렌과 폴리프로필렌의 혼합비가 2 : 8 미만인 경우는 필름의옥외 안정성이 결여되어 갈라지는 문제가 있고, 7 : 3을 초과하는 경우는 내열도가 약해지고 외관이 변하는 문제가 있다.In the case where the mixing ratio of polyethylene and polypropylene is less than 2: 8, there is a problem of lack of outdoor stability of the film and cracking. If the ratio is more than 7: 3, the heat resistance is weak and the appearance is changed.
그리고, 박리층(2)은 장쇄 알킬기를 갖는 화합물이나 천연 또는 합성 고분자 물질의 장쇄 알킬화물, 퍼클로로 알킬 함유 폴리머와 실리콘 유도체 및 장쇄알킬 화합물과 폴리머를 혼합한 것중에서 선택된 배면처리제를 톨루엔, 이소프로판올 등의 용매에 저농도로 용해한 용액을 도포하고 가열 건조하여 형성시킨다.The release layer 2 is a backing agent selected from a compound having a long chain alkyl group, a long chain alkylate of a natural or synthetic high molecular material, a perchloro alkyl-containing polymer and a silicone derivative, and a mixture of a long chain alkyl compound and a polymer. A solution dissolved at low concentration in a solvent such as the above is applied, and dried by heating.
또한, 접착층(3)은 이소부틸렌계 중합체이거나 또는 폴리스티렌 블록, 에틸렌-부틸렌 공중합체 블록 및 폴리스티렌 블록을 포함하는 A-B-A유형의 블록 공중합체로 바람직하게는 스티렌 이소프렌 스티렌(SIS), 스티렌 부타디엔 스티렌(SBS) 및 폴리이소부틸렌(PIB) 등이다.Further, the adhesive layer 3 is an isobutylene-based polymer or an ABA type block copolymer including a polystyrene block, an ethylene-butylene copolymer block, and a polystyrene block. SBS) and polyisobutylene (PIB) and the like.
상기와 같이 형성시킨 박리층(2)과 접착층(3)을 기재층(1)에 도포하여 본 발명의 자동차 도장 보호용 시이트를 제조하는데, 이때 도포되는 박리층(2)의 두께는 건조 후 0.2 ∼ 1 ㎛가 되도록 하며, 0.2 ㎛ 미만이면 충분한 이형력을 얻기 어렵고, 1 ㎛를 초과하면 이형제가 접착면으로 전이하는 문제가 있다. 그리고, 도포되는 접착층(3)의 두께는 건조 후 10 ∼ 15 ㎛가 되도록 하며, 10 ㎛ 미만이면 충분한 초기 접착력을 얻기 어렵고, 15 ㎛를 초과하면 박리시 접착력이 과다한 문제가 있다.The release layer 2 and the adhesive layer 3 formed as described above are applied to the base layer 1 to produce the sheet for automobile coating protection of the present invention, wherein the thickness of the release layer 2 to be applied is 0.2 to 2 after drying. If it is 1 micrometer, when it is less than 0.2 micrometer, sufficient release force will be hard to be obtained, and when it exceeds 1 micrometer, there exists a problem that a mold release agent transfers to an adhesive surface. In addition, the thickness of the adhesive layer 3 to be applied is 10 to 15 μm after drying. If the thickness is less than 10 μm, sufficient initial adhesive force is difficult to be obtained.
이와같이 제조된 자동차 도장 보호용 시이트는 도장막의 손상이나 변색을 효과적으로 막아주고 온도상승 조건에서도 접착력이 균일하게 유지될 뿐 아니라 이형성이 개선되어 작업성이 용이한 잇점이 있어 해당부분에 유용하게 사용될 수 있다.The automobile paint protection sheet thus manufactured effectively prevents damage or discoloration of the coating film, and maintains uniform adhesive strength even under elevated temperature conditions, and improves releasability.
이하, 본 발명을 실시예에 의거하여 상세히 설명하면 다음과 같은 바, 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to the following Examples, but the present invention is not limited by the Examples.
실시예 1Example 1
폴리에틸렌 20 중량%와 폴리프로필렌 80 중량%를 혼합하여 제조한 기재층에 배면처리제 RA60(일본 아시오사 제품)을 톨루엔 용매에 0.6% 농도로 녹이고, 메쉬 롤(mesh roll)을 이용하여 건조 후의 두께가 0.6 ㎛가 되도록 도포하였다. 그 다음 접착제인 폴리이소부틸렌(PIB)를 건조 후의 두께가 10 ㎛가 되게 코팅하여 자동차 도장 보호용 시이트를 제조한 후, 15 ×5cm 되게 절단하여 180° 필(peel)법으로 이형력을 측정하였으며, 그 결과는 다음 표에 나타낸 바와 같다.The backing agent RA60 (manufactured by Ashio Co., Ltd.) was dissolved in a toluene solvent at a concentration of 0.6% in a substrate layer prepared by mixing 20% by weight of polyethylene and 80% by weight of polypropylene, and the thickness after drying using a mesh roll The coating was applied so that it was 0.6 m. Next, the adhesive was coated with polyisobutylene (PIB) to a thickness of 10 μm to prepare a protective sheet for automobile coating, and then cut to 15 × 5 cm to measure a release force by a 180 ° peel method. The results are shown in the following table.
실시예 2Example 2
폴리에틸렌 30 중량%와 폴리프로필렌 70 중량%를 혼합하여 제조한 기재층에 배면처리제 RA-585S(일본 아시오사 제품)를 톨루엔 용매에 0.6%농도로 녹이고,메쉬 롤(mesh roll)을 이용하여 건조 후의 두께가 0.4 ㎛가 되도록 도포하였다. 그 다음 접착제인 PIB를 건조 후의 두께가 10 ㎛가 되게 코팅하여 자동차 도장 보호용 시이트를 제조한 후, 15 ×5cm 되게 절단하여 180°필(peel)법으로 이형력을 측정하였으며, 그 결과는 다음 표에 나타낸 바와 같다.The backing agent RA-585S (manufactured by Ashio, Japan) was dissolved in a toluene solvent at a concentration of 0.6% in a substrate layer prepared by mixing 30% by weight of polyethylene and 70% by weight of polypropylene, followed by drying using a mesh roll. The thickness was applied so that the thickness was 0.4 m. Then, the adhesive PIB was coated to have a thickness of 10 μm after drying to prepare a sheet for car paint protection, and cut to 15 × 5 cm to measure a release force by a 180 ° peel method. The results are shown in the following table. As shown in.
실시예 3Example 3
폴리에틸렌 50 중량%와 폴리프로필렌 50 중량%를 혼합하여 제조한 기재층에 배면처리제 RA22-1(일본 아시오사 제품)를 톨루엔 용매에 0.6% 농도로 녹이고, 메쉬 롤(mesh roll)을 이용하여 건조 후의 두께가 0.2 ㎛가 되도록 도포하였다. 그다음 접착제인 PIB를 건조 후의 두께가 10 ㎛가 되게 코팅하여 자동차 도장보호용 시이트를 제조한 후, 15 ×5 cm 되게 절단하여 180°필(peel)법으로 이형력을 측정하였으며, 그 결과는 다음 표에 나타낸 바와 같다.The backing agent RA22-1 (manufactured by Ashio, Japan) was dissolved in a toluene solvent at a concentration of 0.6% in a substrate layer prepared by mixing 50% by weight of polyethylene and 50% by weight of polypropylene, and dried using a mesh roll. The thickness was applied so that the thickness was 0.2 m. Then, the adhesive PIB was coated to have a thickness of 10 μm after drying to prepare an automobile paint protection sheet, and then cut to 15 × 5 cm to measure a release force by a 180 ° peel method. The results are shown in the following table. As shown in.
비교예 1Comparative Example 1
폴리에틸렌 80 중량%와 폴리프로필렌 20 중량%를 혼합하여 제조한 기재층에 접착제인 PIB를 건조 후의 두께가 10 ㎛가 되게 코팅하여 자동차 도장 보호용 시이트를 제조한 후, 15 ×5 cm 되게 절단하여 180°필(peel)법으로 이형력을 측정하였으며, 그 결과는 다음 표에 나타낸 바와 같다.PIB, an adhesive, was coated on a substrate layer prepared by mixing 80% by weight of polyethylene and 20% by weight of polypropylene so as to have a thickness of 10 μm after drying to prepare a sheet for car paint protection, and then cut to 15 × 5 cm to 180 °. The release force was measured by the peel method, and the results are shown in the following table.
비교예 2Comparative Example 2
폴리에틸렌 기재층에 배면처리제 RA60(일본 아시오사 제품)을 톨루엔 용매에 0.6% 농도로 녹이고, 메쉬 롤(mesh roll)을 이용하여 건조 후의 두께가 0.1 ㎛가 되도록 도포하였다. 그 다음 접착제인 PIB를 건조 후의 두께가 10 ㎛가 되게 코팅하여 자동차 도장 보호용 시이트를 제조한 후, 15 ×5 cm 되게 절단하여 180° 필(peel)법으로 이형력 및 내열도를 측정하였으며, 그 결과는 다음 표에 나타낸 바와 같다.The backing agent RA60 (made by Ashio Co., Ltd.) was melt | dissolved in the toluene solvent at 0.6% concentration, and it applied to the polyethylene base layer so that the thickness after drying might be 0.1 micrometer using the mesh roll. Then, the adhesive PIB was coated to have a thickness of 10 μm after drying to prepare a sheet for car paint protection, and then cut to 15 × 5 cm to measure release force and heat resistance by 180 ° peel method. The results are shown in the following table.
표table
(주) ○ : 외관 이상 없음.(Note) ○: No abnormality in appearance.
△ : 외관이 다소 주름잡힘.(Triangle | delta): Appearance wrinkles a little.
× : 필름의 변형과 주름이 심함.X: Deformation and wrinkles of the film are severe.
제 1 도는 본 발명의 실시예 1 ~ 3에서 제조한 시이트의 횡단면도이다.1 is a cross sectional view of a sheet prepared in Examples 1 to 3 of the present invention.
[ 도면의 주요부분에 대한 부호의 설명 ][Description of Code for Major Parts of Drawing]
1 - 기재층, 2 - 박리층,1-base material layer, 2-release layer,
3 - 접착층.3-adhesive layer.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940038786A KR100319486B1 (en) | 1994-12-29 | 1994-12-29 | Automotive coating protection sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940038786A KR100319486B1 (en) | 1994-12-29 | 1994-12-29 | Automotive coating protection sheet |
Publications (2)
Publication Number | Publication Date |
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KR960022913A KR960022913A (en) | 1996-07-18 |
KR100319486B1 true KR100319486B1 (en) | 2002-07-02 |
Family
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Application Number | Title | Priority Date | Filing Date |
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KR1019940038786A KR100319486B1 (en) | 1994-12-29 | 1994-12-29 | Automotive coating protection sheet |
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Country | Link |
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KR (1) | KR100319486B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100864821B1 (en) | 2007-05-02 | 2008-10-23 | 안근흥 | A painted colorband and the producing method for car |
WO2018004112A1 (en) * | 2016-06-28 | 2018-01-04 | 김정린 | Vehicle and home appliance scratch repair sticker and method for manufacturing same repair sticker |
-
1994
- 1994-12-29 KR KR1019940038786A patent/KR100319486B1/en active IP Right Grant
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100864821B1 (en) | 2007-05-02 | 2008-10-23 | 안근흥 | A painted colorband and the producing method for car |
WO2018004112A1 (en) * | 2016-06-28 | 2018-01-04 | 김정린 | Vehicle and home appliance scratch repair sticker and method for manufacturing same repair sticker |
Also Published As
Publication number | Publication date |
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KR960022913A (en) | 1996-07-18 |
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