KR102276449B1 - UV imprinting device with indirect cooling type roller unit - Google Patents

UV imprinting device with indirect cooling type roller unit Download PDF

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KR102276449B1
KR102276449B1 KR1020190158539A KR20190158539A KR102276449B1 KR 102276449 B1 KR102276449 B1 KR 102276449B1 KR 1020190158539 A KR1020190158539 A KR 1020190158539A KR 20190158539 A KR20190158539 A KR 20190158539A KR 102276449 B1 KR102276449 B1 KR 102276449B1
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roll
cooling
film
mold
roller unit
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KR1020190158539A
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KR20210068925A (en
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나기수
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주식회사 쎄넘
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/20Exposure; Apparatus therefor
    • G03F7/2002Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
    • G03F7/2004Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/0002Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70Microphotolithographic exposure; Apparatus therefor
    • G03F7/70008Production of exposure light, i.e. light sources
    • G03F7/70033Production of exposure light, i.e. light sources by plasma extreme ultraviolet [EUV] sources
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70Microphotolithographic exposure; Apparatus therefor
    • G03F7/70425Imaging strategies, e.g. for increasing throughput or resolution, printing product fields larger than the image field or compensating lithography- or non-lithography errors, e.g. proximity correction, mix-and-match, stitching or double patterning
    • G03F7/70458Mix-and-match, i.e. multiple exposures of the same area using a similar type of exposure apparatus, e.g. multiple exposures using a UV apparatus
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70Microphotolithographic exposure; Apparatus therefor
    • G03F7/708Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
    • G03F7/70858Environment aspects, e.g. pressure of beam-path gas, temperature
    • G03F7/70866Environment aspects, e.g. pressure of beam-path gas, temperature of mask or workpiece
    • G03F7/70875Temperature, e.g. temperature control of masks or workpieces via control of stage temperature

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  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Toxicology (AREA)
  • Environmental & Geological Engineering (AREA)
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Abstract

본 발명은 외주면에 미세 패턴이 형성된 금형롤; 자외선발생기; 필름을 권취하되, 스텝모터가 설치되어 권취되는 필름의 이동속도의 제어가 가능한 권취롤; 상기 필름을 권출하는 권출롤; 상기 필름의 이동속도를 측정하는 속도센서; 상기 금형롤의 온도를 측정하는 온도센서; 상기 금형롤의 하부에 설치되어 상기 필름을 상기 금형롤에 압착·지지하는 지지롤; 냉각롤, 상기 금형롤과 상기 냉각롤 사이에 접촉하여 설치되는 제1 고무롤과 제2 고무롤로 구성된 냉각롤러유닛; 및 제어부;를 포함하여 이루어진 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치에 관한 것이다.The present invention is a mold roll having a fine pattern formed on the outer circumferential surface; UV generator; But the film is wound, a step motor is installed, a winding roll capable of controlling the moving speed of the film to be wound; an unwinding roll for unwinding the film; a speed sensor for measuring the moving speed of the film; a temperature sensor for measuring the temperature of the mold roll; a support roll installed under the mold roll to press and support the film to the mold roll; a cooling roller unit comprising a cooling roll, a first rubber roll and a second rubber roll installed in contact between the mold roll and the cooling roll; and a control unit; relates to a UV imprinting apparatus having a cooling roller unit of an indirect cooling method comprising a.

Description

간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치{UV imprinting device with indirect cooling type roller unit}UV imprinting device with indirect cooling type roller unit

본 발명은 미세패턴이 형성된 금형롤을 냉각시키기 위한 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치에 관한 것이다.The present invention relates to a UV imprinting apparatus having a cooling roller unit of an indirect cooling method for cooling a mold roll on which a fine pattern is formed.

미세패턴이 형성된 필름은 냉장고, 세탁기 등 각종 가전제품, 가구나 차량 등의 외장을 보호하고 장식하는 용도로 많이 이용되고 있는 바, 이러한 미세패턴이 형성된 필름을 생산하는 방식은 다양하나, 본 발명은 UV(Ultraviolet) 경화 방식을 이용한 임프린팅 장치에 관한 것이다.A film having a fine pattern is widely used for protecting and decorating the exterior of various home appliances such as refrigerators and washing machines, furniture and vehicles, etc. There are various methods of producing a film having such a fine pattern, but the present invention is a UV (Ultraviolet) relates to an imprinting apparatus using a curing method.

일반적으로 UV 임프린팅 장치는 합성수지나 금속 재질의 필름에 자외선 경화수지를 도포하고 미세패턴이 형성된 금형롤을 이용하여 대상 필름의 표면에 미세패턴을 전사한 후, 자외선을 조사하여 필름 표면에 형성된 미세패턴을 경화시키는 장치로 구성되어 있다.In general, a UV imprinting device applies a UV curing resin to a film made of a synthetic resin or a metal material, transfers the micro pattern to the surface of the target film using a mold roll on which the micro pattern is formed, and then irradiates the UV light to form the micro-pattern on the film surface. It consists of a device for curing the pattern.

이러한 UV 임프린팅 장치에 있어서 냉각에 관한 종래의 기술은 대부분 UV 램프가 포함된 자외선발생기 또는 미세패턴이 형성된 '필름'을 냉각시키는 것에 관한 것이었다.In such a UV imprinting apparatus, the conventional technology for cooling was mostly related to cooling a 'film' on which a fine pattern was formed or an ultraviolet generator including a UV lamp.

한편, 미세패턴이 임프린팅된 필름의 품질을 향상시킴에 있어서, 미세패턴의 인쇄와 자외선 경화작용이 발생하는 금형롤의 과열을 방지하는 것이 무엇보다 중요하다는 사실을 발견하였다.On the other hand, it was found that, in improving the quality of the film imprinted with the fine pattern, it is most important to prevent overheating of the mold roll, which causes the printing of the fine pattern and the UV curing action.

즉, 금형롤이 과열된 상태에서 제조된 미세패턴이 형성된 필름은 국소적인 색상의 불균일과 냉각 과정에서 미세한 크랙 등 불량이 발생할 가능성이 높아지게 된다.That is, the film on which the fine pattern is formed, which is manufactured in a state in which the mold roll is overheated, is more likely to have local color non-uniformity and defects such as minute cracks in the cooling process.

이러한, 금형롤을 냉각시키는 방식으로는 금형롤 내부에 냉매(냉각수 포함)가 유동가능한 유로를 형성하여 금형롤을 직접적으로 냉각시키는 '직접' 냉각방식을 생각할 수 있으나, 이는 금형롤의 제조비용을 상승시켜 결국 제품의 제조원가를 상승시킬 뿐만 아니라 다른 형태의 미세패턴이 형성된 금형롤로 교체시 많은 시간과 노력이 소모되는 단점이 있다.As a method of cooling the mold roll, a 'direct' cooling method in which a refrigerant (including coolant) flows through the mold roll is formed to directly cool the mold roll, but this reduces the manufacturing cost of the mold roll As a result, it not only increases the manufacturing cost of the product, but also has the disadvantage of consuming a lot of time and effort when replacing the mold roll with a different type of fine pattern.

따라서 본 발명은 금형롤을 냉각시키는 방식에 있어서 생산단가의 상승을 방지하면서 금형롤의 교체시 비용과 시간을 획기적으로 절약할 수 있는 '간접' 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치를 제시한다. Therefore, the present invention is a UV imprinting apparatus equipped with a cooling roller unit of an 'indirect' cooling method that can significantly save cost and time when replacing a mold roll while preventing an increase in production cost in a method of cooling a mold roll. present

KR10-1785055 B1 (2017. 10. 13. 공고)KR10-1785055 B1 (2017. 10. 13. Announcement)

상기와 같은 문제점을 해결하기 위해 안출된 것으로, 본 발명은 UV 임프린팅 장치의 금형롤의 외부에 간접 냉각방식의 냉각롤러유닛을 구비하여 금형롤의 과열을 방지하고자 함에 그 목적이 있다.The purpose of the present invention is to prevent overheating of the mold roll by providing a cooling roller unit of an indirect cooling method on the outside of the mold roll of the UV imprinting apparatus.

또한, 본 발명은 기존의 UV 임프린팅 장치에 용이하게 부가하여 설치할 수 있는 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치를 제공하고자 함에 그 목적이 있다.In addition, an object of the present invention is to provide a UV imprinting apparatus having a cooling roller unit of an indirect cooling method that can be easily installed in addition to an existing UV imprinting apparatus.

또한, 본 발명은 금형롤의 온도에 따라 필름의 이동속도를 조절하여 마찰열을 감소시키거나 제품의 생산속도를 증가시키는 제어를 가능하게 하고자 함에 그 목적이 있다.In addition, an object of the present invention is to enable control of reducing frictional heat or increasing the production speed of a product by adjusting the moving speed of the film according to the temperature of the mold roll.

상기한 문제점을 해결하고자 본 발명은, 외주면에 미세 패턴이 형성된 금형롤; 자외선발생기; 필름을 권취하되, 스텝모터가 설치되어 권취되는 필름의 이동속도의 제어가 가능한 권취롤; 상기 필름을 권출하는 권출롤; 상기 필름의 이동속도를 측정하는 속도센서; 상기 금형롤의 온도를 측정하는 온도센서; 상기 금형롤의 하부에 설치되어 상기 필름을 상기 금형롤에 압착·지지하는 지지롤; 냉각롤, 상기 금형롤과 상기 냉각롤 사이에 접촉하여 설치되는 제1 고무롤과 제2 고무롤로 구성된 냉각롤러유닛; 및 제어부;를 포함하여 이루어진다.In order to solve the above problems, the present invention, a mold roll having a fine pattern formed on the outer peripheral surface; UV generator; But the film is wound, a step motor is installed, a winding roll capable of controlling the moving speed of the film to be wound; an unwinding roll for unwinding the film; a speed sensor for measuring the moving speed of the film; a temperature sensor for measuring the temperature of the mold roll; a support roll installed under the mold roll to press and support the film to the mold roll; a cooling roller unit comprising a cooling roll, a first rubber roll and a second rubber roll installed in contact between the mold roll and the cooling roll; and a control unit.

또한 상기 제1 고무롤과 제2 고무롤은 금속재질의 원통형상의 롤의 외주면에 고무층이 형성된 것을 특징으로 한다.In addition, the first rubber roll and the second rubber roll are characterized in that a rubber layer is formed on the outer peripheral surface of the metal cylindrical roll.

또한 상기 냉각롤러유닛은 냉매가 통과하는 유로가 내부에 형성된 금속재질의 원통형상의 롤의 외주면에 고무층이 형성되되, 금형롤에 접촉/비접촉 가능하도록 이동가능하게 설치된 보조냉각롤을 더 포함하는 것을 특징으로 한다.In addition, the cooling roller unit further comprises an auxiliary cooling roll having a rubber layer formed on the outer circumferential surface of the metal cylindrical roll having a flow path through which the refrigerant passes therein, and movably installed so as to be in contact/non-contact with the mold roll. do it with

또한 상기 제어부는 상기 온도센서에 의해 측정된 상기 금형롤의 온도가 일정온도에 이르면 상기 권취롤의 스텝모터를 제어하여 상기 필름의 이동속도를 낮추는 것을 특징으로 한다.In addition, when the temperature of the mold roll measured by the temperature sensor reaches a predetermined temperature, the control unit controls the step motor of the take-up roll to lower the moving speed of the film.

또한 상기 제어부는 상기 온도센서에 의해 측정된 상기 금형롤의 온도가 일정온도에 이르고 그 온도상승의 속도가 비정상적으로 가파른 경우에 상기 권취롤의 스텝모터를 제어하여 상기 필름의 이동속도를 낮추는 동시에 상기 보조냉각롤을 상기 금형롤에 접촉하도록 이동시키는 것을 특징으로 한다.In addition, when the temperature of the mold roll measured by the temperature sensor reaches a certain temperature and the speed of the temperature rise is abnormally steep, the control unit controls the step motor of the winding roll to lower the moving speed of the film at the same time. It is characterized in that the auxiliary cooling roll is moved to contact the mold roll.

또한 상기 고무층은 유리섬유가 포함된 폴리우레탄 계열 내지 실리콘 계열의 고무 중 선택가능하되, 그 두께가 1~10 mm 인 것을 특징으로 한다.In addition, the rubber layer may be selected from among polyurethane-based or silicone-based rubbers containing glass fibers, and the thickness thereof is 1 to 10 mm.

상기와 같은 기술적 특징을 갖는 본 발명에 의하면 미세패턴이 형성된 금형롤을 손상없이 효율적으로 냉각시킬 수 있다.According to the present invention having the above technical characteristics, it is possible to efficiently cool the mold roll on which the fine pattern is formed without damage.

또한, 본 발명에 따른 냉각롤러유닛은 기존의 UV 임프린팅 장치에 용이하게 부가하여 설치할 수 있다.In addition, the cooling roller unit according to the present invention can be easily installed in addition to the existing UV imprinting apparatus.

또한, 본 발명에 의하면 미세패턴이 형성된 필름의 효율적인 지속 생산이 가능하게 된다.In addition, according to the present invention, it is possible to efficiently and continuously produce a film on which a fine pattern is formed.

도 1은 본 발명의 일 실시예에 따른 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치의 구성을 개략적으로 나타낸 구성도
도 2는 본 발명의 다른 일 실시예에 따른 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치의 구성을 개략적으로 나타낸 구성도
도 3은 본 발명에 따른 냉각롤러유닛의 구성을 나타낸 분해사시도.
도 4는 본 발명에 따른 보조냉각롤의 구성을 나타낸 사시도
1 is a configuration diagram schematically showing the configuration of a UV imprinting apparatus having a cooling roller unit of an indirect cooling method according to an embodiment of the present invention;
2 is a configuration diagram schematically showing the configuration of a UV imprinting apparatus having a cooling roller unit of an indirect cooling method according to another embodiment of the present invention;
3 is an exploded perspective view showing the configuration of a cooling roller unit according to the present invention;
4 is a perspective view showing the configuration of an auxiliary cooling roll according to the present invention;

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

일반적으로 UV(Ultra Violet) 임프린팅 장치를 이용하여 미세패턴이 형성된 필름을 제조하는 과정에서 금형롤(1)의 과열을 방지하는 것이 품질향상에 매우 중요한데, 보통 제조과정에서는 필름의 재질과 자외선 경화수지의 종류에 따라 금형롤의 온도 상한을 40~80℃ 이하로 유지시키는 것이 필요하다.In general, it is very important for quality improvement to prevent overheating of the mold roll 1 in the process of manufacturing a film with a fine pattern using a UV (Ultra Violet) imprinting device. Depending on the type of resin, it is necessary to maintain the upper temperature limit of the mold roll at 40~80℃ or less.

한편, 미세패턴이 형성된 필름을 제조하는 과정에서 필름의 이동속도는 통상적으로 5~30 m/min 이다. On the other hand, in the process of manufacturing the film on which the fine pattern is formed, the moving speed of the film is usually 5 to 30 m/min.

이에 따라 본 발명의 일 실시예를 도 1을 참고하여 설명하면, UV 임프린팅 장치는 권취롤(3)에 의해 권출롤(2)로부터 필름(F)을 권출하여 필름(F)에 자외선 경화수지를 도포하고, 가이드롤(11, 12)에 의해 금형롤(1)에 유도된 필름(F)을 지지롤(4)로 미세패턴이 형성된 금형롤(1)에 가압하여 필름(F)에 미세패턴을 전사하면서 자외선발생기(5)로부터 발생되는 자외선을 조사하여 미세패턴을 경화시키는 구성을 포함하여 이루어진다.Accordingly, when an embodiment of the present invention will be described with reference to FIG. 1 , the UV imprinting apparatus unwinds the film F from the unwinding roll 2 by the winding roll 3 to apply an ultraviolet curing resin to the film F. is applied, and the film (F) guided to the mold roll (1) by the guide rolls (11, 12) is pressed to the mold roll (1) on which the fine pattern is formed with the support roll (4) to form a fine film (F). It includes a configuration for curing the fine pattern by irradiating the ultraviolet rays generated from the ultraviolet ray generator 5 while transferring the pattern.

또한, 본 발명의 UV 임프린팅 장치는 권취롤(3)의 권취속도를 조절할 수 있는 스텝모터(미도시)가 권취롤의 회전축에 설치되되, 권취롤(3)에 이동되는 필름(F)의 이동속도를 측정할 수 있는 속도센서(미도시)가 스텝모터에 연결설치되고, 금형롤(1)의 온도를 측정할 수 있는 온도센서(미도시)가 설치되며, 금형롤(1)의 온도에 따라 권취롤(3)의 권취속도를 제어하는 구성을 포함하는 제어부(미도시)가 더 구성된다. In addition, in the UV imprinting apparatus of the present invention, a step motor (not shown) capable of adjusting the winding speed of the winding roll 3 is installed on the rotating shaft of the winding roll, and the film (F) moved to the winding roll 3 A speed sensor (not shown) capable of measuring the moving speed is installed connected to the step motor, a temperature sensor (not shown) capable of measuring the temperature of the mold roll 1 is installed, and the temperature of the mold roll 1 is installed. A control unit (not shown) including a configuration for controlling the winding speed of the winding roll 3 is further configured.

본 발명의 제어부는 속도센서, 온도센서로부터 측정값을 입력받아 기 설정된 금형롤(1)의 온도의 상한과 하한의 범위에서 스텝모터와 냉각롤러유닛(A, A’)의 작동을 제어한다.The control unit of the present invention receives the measured values from the speed sensor and the temperature sensor and controls the operation of the step motor and the cooling roller units (A, A') in the range of the upper and lower limits of the preset temperature of the mold roll 1 .

참고로, 여기서 필름(F)의 이동속도와 권취롤(3)의 권취속도는 표현만 따를 뿐 같은 개념이며, 본 명세서에서는 혼용하여 기술한다.For reference, here, the moving speed of the film (F) and the winding speed of the winding roll (3) are the same concept only according to the expression, and are described in combination in the present specification.

그런데 제조과정에서 자외선발생기로부터 방사되는 열과 필름과의 마찰열, 자외선 경화수지가 경화되면서 발생하는 반응열 등에 의해 금형롤(1)이 과열되는 문제점이 발생하였고, 금형롤(1)이 과열된 상태에서 제조된 미세패턴이 형성된 필름(F)은 크랙이나 국소적인 색상의 불균일성 등 불량률이 증가하는 현상이 발생되었다.However, during the manufacturing process, there was a problem in that the mold roll 1 was overheated due to heat radiated from the UV generator, friction heat with the film, and reaction heat generated while the UV curing resin was cured. In the film (F) on which the fine pattern was formed, a phenomenon in which the defect rate increased, such as cracks or local color non-uniformity, occurred.

따라서 본 발명은 금형롤(1)의 온도를 일정온도 이하로 유지시키기 위한 냉각롤러유닛(A)을 제시한다.Therefore, the present invention proposes a cooling roller unit (A) for maintaining the temperature of the mold roll (1) below a certain temperature.

냉각롤러유닛(A)은 냉각롤(20), 제1 고무롤(30) 및 제2 고무롤(40)로 이루어지는데, 제1 및 제2 고무롤(30, 40)은 냉각롤(20)과 금형롤(1) 사이에 접촉하도록 설치되어 금형롤(1)을 냉각시키는 작용을 하게 된다.The cooling roller unit (A) consists of a cooling roll 20, a first rubber roll 30 and a second rubber roll 40. The first and second rubber rolls 30 and 40 are a cooling roll 20 and a mold roll. (1) is installed so as to contact between the mold roll (1) is cooled.

도 3을 참조하여 설명하면, 냉각롤(20)은 스테인레스 등 금속재질의 원통형 롤의 내부에 냉매가 유동할 수 있는 유로(미도시)를 설치한 구성을 갖고 있고, 제1 및 제2 고무롤(30, 40)은 금속재질의 원통형 롤의 외주면에 고무층(31, 41)을 형성한 구성을 갖는다.3, the cooling roll 20 has a configuration in which a flow path (not shown) through which a refrigerant can flow is installed inside a cylindrical roll made of a metal material such as stainless steel, and the first and second rubber rolls ( 30 and 40) have a configuration in which rubber layers 31 and 41 are formed on the outer peripheral surface of a cylindrical roll made of a metal material.

만약 금속재질의 냉각롤(20)이 금형롤(1)에 접촉하여 냉각시키는 구성을 취한다면 작은 진동과 충격에 의해서도 금형롤의 미세패턴이 손상되는 문제가 발생하기 때문에 이를 방지하기 위해 제1 및 제2 고무롤(30, 40)을 구성한 것이다.If the cooling roll 20 made of a metal material is configured to cool the mold roll 1 in contact with the mold roll 1, the problem of damaging the fine pattern of the mold roll even by small vibrations and shocks occurs. The second rubber rolls 30 and 40 are constituted.

여기서 고무층(31, 41)을 구성하는 고무(rubber)는 열전도율을 높이기 위해 유리섬유(glass fiber)가 함유된 폴리우레탄 계열 내지 실리콘 계열의 고무에서 선택하되, 고무층(31, 41)의 두께는 1~10 mm 로 구성함이 바람직하다. 그리하여 예를 들면, 고무층(31, 41)의 두께가 1mm, 3mm, 5mm 또는 10mm 인 고무롤을 다수개 제작하여 고무층의 마모나 손상이 발생할 경우에 신속하게 교체하여 사용할 수도 있다.Here, the rubber constituting the rubber layers 31 and 41 is selected from polyurethane-based or silicone-based rubbers containing glass fibers to increase thermal conductivity, and the thickness of the rubber layers 31 and 41 is 1 It is preferable to configure it as ~10 mm. Thus, for example, a plurality of rubber rolls having a thickness of 1 mm, 3 mm, 5 mm, or 10 mm of the rubber layers 31 and 41 may be manufactured and replaced quickly when abrasion or damage to the rubber layer occurs.

이에 본 발명에 따른 간접 냉각방식의 냉각롤러유닛(A)을 구비한 UV 임프린팅 장치의 작동을 설명하면, 작업과정 중 온도센서에 의해 측정된 금형롤(1)의 온도가 설정된 온도의 상한에 이르면 제어부의 제어신호에 따라 권취롤(3)의 권취속도를 낮추도록 제어한다. 한편, 온도센서에 의해 측정된 금형롤(1)이 온도가 설정된 온도의 하한에 이르지 못한 경우, 제어부의 제어신호에 따라 속도센서로 부터 측정된 필름(F)의 이동속도가 설정된 속도의 상한에 이르기까지 권취롤(3)의 권취속도를 점진적으로 높이도록 제어한다.Accordingly, when explaining the operation of the UV imprinting apparatus having the cooling roller unit (A) of the indirect cooling method according to the present invention, the temperature of the mold roll 1 measured by the temperature sensor during the operation process is at the upper limit of the set temperature. When it arrives, it is controlled to lower the winding speed of the winding roll 3 according to the control signal of the control unit. On the other hand, when the temperature of the mold roll 1 measured by the temperature sensor does not reach the lower limit of the set temperature, the moving speed of the film F measured from the speed sensor according to the control signal of the controller is set at the upper limit of the set speed. It is controlled to gradually increase the winding speed of the winding roll 3 until it is reached.

본 발명에 따른 냉각롤러유닛의 다른 일 실시예를 도 2와 도 4를 참조하여 설명하면, 냉각롤러유닛(A’)은 보조냉각롤(50)을 더 포함한다.Another embodiment of the cooling roller unit according to the present invention will be described with reference to FIGS. 2 and 4 , the cooling roller unit A′ further includes an auxiliary cooling roll 50 .

보조냉각롤(50)은 스테인레스 등 금속재질의 원통형 롤의 내부에 냉매가 유동할 수 있는 유로를 설치한 구성을 갖고 있고, 그 외주면에 고무층(51)을 형성하여 구성한다. 여기서 냉각롤(20)과 보조냉각롤(50)의 유로가 서로 연동되도록 구성하여 냉매가 냉각롤(20)과 보조냉각롤(50)의 내부를 유동할 수 있도록 구성할 수도 있다.The auxiliary cooling roll 50 has a configuration in which a flow path through which a refrigerant can flow is installed inside a cylindrical roll made of a metal material such as stainless steel, and a rubber layer 51 is formed on the outer circumferential surface thereof. Here, the flow paths of the cooling roll 20 and the auxiliary cooling roll 50 may be configured to interlock with each other so that the refrigerant can flow inside the cooling roll 20 and the auxiliary cooling roll 50 .

보조냉각롤(50)의 고무층(51)을 구성하는 고무(rubber)는 열전도율을 높이기 위해 유리섬유(glass fiber)가 함유된 폴리우레탄 계열 내지 실리콘 계열의 고무에서 선택하되, 고무층(51)의 두께는 1~10 mm 로 구성함이 바람직하다.The rubber constituting the rubber layer 51 of the auxiliary cooling roll 50 is selected from polyurethane-based or silicone-based rubbers containing glass fibers to increase thermal conductivity, but the thickness of the rubber layer 51 is is preferably configured to be 1 to 10 mm.

작동을 설명하면, 작업과정 중 온도센서에 의해 측정된 금형롤(1)의 온도가 설정된 온도의 상한에 이르고, 그 온도상승의 속도가 비정상적으로 가파른 경우, 제어부의 제어신호에 따라 권취롤(3)의 권취속도를 설정된 속도의 하한 까지 낮추도록 스텝모터를 제어하는 한편, 보조냉각롤(50)이 금형롤(1)에 접촉하도록 이동시켜 신속 냉각이 가능하도록 한다.To explain the operation, when the temperature of the mold roll 1 measured by the temperature sensor during the working process reaches the upper limit of the set temperature, and the speed of the temperature rise is abnormally steep, according to the control signal of the control unit, the winding roll 3 ), while controlling the stepper motor to lower the winding speed to the lower limit of the set speed, the auxiliary cooling roll 50 is moved to contact the mold roll 1 to enable rapid cooling.

이상에서 본 발명의 바람직한 실시예를 설명하였으나, 본 발명의 범위는 앞서 설명한 특정 실시예에만 국한되는 것이 아니며, 해당 기술분야의 통상의 지식을 가진 자라면 본 발명의 특허청구범위에 기재된 범주 내에서 적절하에 변형 실시가 가능하다 할 것이다.Although preferred embodiments of the present invention have been described above, the scope of the present invention is not limited to the specific embodiments described above, and those of ordinary skill in the art are within the scope described in the claims of the present invention. It will be possible to carry out a modification if appropriate.

1 : 금형롤 2 : 권출롤
3 : 권취롤 4 : 지지롤
5: 자외선발생기
A, A’: 냉각롤러유닛 F : 필름
11, 12 : 가이드롤
20 : 냉각롤
30 : 제1 고무롤 31 : 고무층
40 : 제2 고무롤 41 : 고무층
50 : 보조냉각롤 51 : 고무층
1: mold roll 2: unwinding roll
3: winding roll 4: support roll
5: UV generator
A, A': Cooling roller unit F: Film
11, 12: guide roll
20: cooling roll
30: first rubber roll 31: rubber layer
40: second rubber roll 41: rubber layer
50: auxiliary cooling roll 51: rubber layer

Claims (6)

외주면에 미세 패턴이 형성된 금형롤;
자외선발생기;
필름을 권취하되, 스텝모터가 설치되어 권취되는 필름의 이동속도의 제어가 가능한 권취롤;
상기 필름을 권출하는 권출롤;
상기 필름의 이동속도를 측정하는 속도센서;
상기 금형롤의 온도를 측정하는 온도센서;
상기 금형롤의 하부에 설치되어 상기 필름을 상기 금형롤에 압착·지지하는 지지롤;
냉각롤, 상기 금형롤과 상기 냉각롤 사이에 접촉하여 설치되는 제1 고무롤과 제2 고무롤로 구성된 냉각롤러유닛; 및
제어부;
를 포함하여 이루어지는 것을 특징으로 하는 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치에 있어서,
상기 냉각롤러유닛은 냉매가 통과하는 유로가 내부에 형성된 금속재질의 원통형상의 롤의 외주면에 고무층이 형성되되, 금형롤에 접촉/비접촉 가능하도록 이동가능하게 설치된 보조냉각롤을 더 포함하고,
상기 제어부는 상기 온도센서에 의해 측정된 상기 금형롤의 온도가 일정온도에 이르고 그 온도상승의 속도가 비정상적으로 가파른 경우에 상기 권취롤의 스텝모터를 제어하여 상기 필름의 이동속도를 낮추는 동시에 상기 보조냉각롤을 상기 금형롤에 접촉하도록 이동시키는 것을 특징으로 하는 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치.
a mold roll having a fine pattern formed on the outer peripheral surface;
UV generator;
But the film is wound, a step motor is installed, a winding roll capable of controlling the moving speed of the film to be wound;
an unwinding roll for unwinding the film;
a speed sensor for measuring the moving speed of the film;
a temperature sensor for measuring the temperature of the mold roll;
a support roll installed under the mold roll to press and support the film to the mold roll;
a cooling roller unit comprising a cooling roll, a first rubber roll and a second rubber roll installed in contact between the mold roll and the cooling roll; and
control unit;
In the UV imprinting apparatus having a cooling roller unit of an indirect cooling method, characterized in that it comprises a,
The cooling roller unit further includes an auxiliary cooling roll having a rubber layer formed on the outer circumferential surface of the metal cylindrical roll having a flow path through which the refrigerant passes therein, and being movably installed so as to be in contact/non-contact with the mold roll,
When the temperature of the mold roll measured by the temperature sensor reaches a certain temperature and the speed of the temperature rise is abnormally steep, the control unit controls the step motor of the take-up roll to lower the moving speed of the film and the auxiliary UV imprinting apparatus having a cooling roller unit of an indirect cooling method, characterized in that the cooling roll is moved to contact the mold roll.
청구항 1에 있어서,
상기 제1 고무롤과 제2 고무롤은 금속재질의 원통형상의 롤의 외주면에 고무층이 형성된 것을 특징으로 하는 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치.
The method according to claim 1,
The first rubber roll and the second rubber roll are UV imprinting apparatus having an indirect cooling cooling roller unit, characterized in that a rubber layer is formed on the outer peripheral surface of the metal cylindrical roll.
삭제delete 삭제delete 삭제delete 청구항 2에 있어서,
상기 고무층은 유리섬유가 포함된 폴리우레탄 계열 내지 실리콘 계열의 고무 중 선택가능하되, 그 두께가 1~10 mm 인 것을 특징으로 하는 간접 냉각방식의 냉각롤러유닛을 구비한 UV 임프린팅 장치.

3. The method according to claim 2,
The rubber layer is a UV imprinting device having a cooling roller unit of an indirect cooling method, characterized in that the rubber layer is selectable from among polyurethane-based or silicone-based rubbers containing glass fibers, and the thickness is 1 to 10 mm.

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