KR100922016B1 - Method For Manufacturing Reflector Increasing Light Reflectivity - Google Patents

Method For Manufacturing Reflector Increasing Light Reflectivity Download PDF

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KR100922016B1
KR100922016B1 KR1020070069383A KR20070069383A KR100922016B1 KR 100922016 B1 KR100922016 B1 KR 100922016B1 KR 1020070069383 A KR1020070069383 A KR 1020070069383A KR 20070069383 A KR20070069383 A KR 20070069383A KR 100922016 B1 KR100922016 B1 KR 100922016B1
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reflective sheet
manufacturing
light reflection
increasing
reflection characteristics
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KR1020070069383A
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KR20090006242A (en
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차성운
박준영
서정환
김학빈
전병주
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연세대학교 산학협력단
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00605—Production of reflex reflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3403—Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3415—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0083—Reflectors
    • B29L2011/0091—Reflex reflectors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

본 발명은 광반사 특성 증대를 위한 반사시트 제조 방법에 대한 것으로서, 더욱 상세하게는 연신된 플라스틱을 이용하여 초미세 발포 공정을 수행하여 반사시트을 제조함으로써, 반사시트의 광학적 특성을 향상시키고, 제작된 반사시트의 두께를 감소시키며, 그 생산 비용을 절감할 수 있는 반사시트 제조 방법에 관한 것이다.The present invention relates to a method for manufacturing a reflective sheet for improving light reflection characteristics, and more particularly, by manufacturing an reflective sheet by performing an ultra-fine foaming process using an elongated plastic, thereby improving optical properties of the reflective sheet, and The present invention relates to a method for manufacturing a reflective sheet which can reduce the thickness of the reflective sheet and reduce its production cost.

이를 위해,for teeth,

(a) 플라스틱 재료를 상온에서 1축 연신 또는 2축 연신시키는 단계; 및(a) uniaxially stretching or biaxially stretching the plastic material at room temperature; And

(b) 상기 플라스틱 재료를 이용하여 초미세 발포 공정을 수행하는 단계;(b) performing an ultrafine foaming process using the plastic material;

를 포함하여 구성되는 것을 특징으로 하는 광반사 특성 증대를 위한 반사시트 제조 방법을 제공한다.It provides a reflective sheet manufacturing method for increasing the light reflection characteristics, characterized in that configured to include.

발포 플라스틱, 반사시트, 광반사, 연신, 초미세 발포 공법. Foamed plastic, reflective sheet, light reflection, stretching, ultra-fine foaming method.

Description

광반사 특성 증대를 위한 반사시트 제조 방법 {Method For Manufacturing Reflector Increasing Light Reflectivity}Method for manufacturing reflector sheet to increase light reflection property {Method For Manufacturing Reflector Increasing Light Reflectivity}

본 발명은 광반사 특성 증대를 위한 반사시트 제조 방법에 대한 것으로서, 더욱 상세하게는 연신된 플라스틱을 이용하여 초미세 발포 공정을 수행하여 반사시트을 제조함으로써, 반사시트의 광학적 특성을 향상시키고, 제작된 반사시트의 두께를 감소시키며, 반사시트의 생산 비용을 절감할 수 있는 반사시트 제조 방법에 관한 것이다.The present invention relates to a method for manufacturing a reflective sheet for improving light reflection characteristics, and more particularly, by manufacturing an reflective sheet by performing an ultra-fine foaming process using an elongated plastic, thereby improving optical properties of the reflective sheet, and The present invention relates to a method for manufacturing a reflective sheet which can reduce the thickness of the reflective sheet and reduce the production cost of the reflective sheet.

일반적으로, LCD는 백라이트 유닛(back light unit, 이하 "BLU" 라 한다) 과 액정 패널로 나눌 수 있다. LCD의 특성상 자체 발광이 불가능하므로, 뒤에서 빛을 비추는 광원이 필요하며, 이러한 광원을 BLU라 한다. 그리고 그 위에 얹어지는 지는 것이 액정 패널 부분이며, 액정 패널은 각 셀을 트랜지스터의 원리에 의해 들어온 신호에 따라 열고 닫음으로서 BLU에서 투사되는 빛을 컨트롤하게 된다. 이렇게 해서 최종 화면이 사용자의 눈앞에 보이게 된다.In general, the LCD may be divided into a back light unit (hereinafter referred to as "BLU") and a liquid crystal panel. Due to the nature of the LCD, self-luminous is impossible, so a light source that emits light from behind is required, and such a light source is called a BLU. And what is placed on it is the liquid crystal panel part, and the liquid crystal panel controls the light projected from the BLU by opening and closing each cell in accordance with the signal input by the principle of the transistor. This way the final screen is in front of the user.

상기와 같은 BLU는 도1 에 도시된 바와 같이 프리즘시트, 확산시트, 도광판, 반사시트를 포함하여 구성된다. As described above, the BLU includes a prism sheet, a diffusion sheet, a light guide plate, and a reflective sheet.

상기 확산시트를 이용하게 되면 빛의 확산을 기대할 수 있으나, 휘도(brightness) 효율이 매우 떨어지게 된다. 디스플레이 장치에 있어 휘도 효율이 낮아지는 것은 제품의 성능이 떨어지는 것과 직결되기 때문에 확산시트의 사용은 최대한 줄여야 하며, 따라서 전면에 동일한 휘도를 구현할 수 있는 반사시트의 성능 개선이 필요하다. When the diffusion sheet is used, light diffusion can be expected, but brightness efficiency is very low. As the luminance efficiency of the display device is directly related to the deterioration of the product performance, the use of the diffusion sheet should be reduced as much as possible, and thus the performance of the reflective sheet capable of realizing the same luminance on the front surface is required.

상기의 반사시트는 광원에서 나오는 빛에 시각효과를 구현하기 위하여 원하는 방향으로 빛을 보낼 수 있는 플라스틱 시트 또는 필름의 형태로 구성되며, 현재 상기와 같은 반사시트를 만드는 방법은 현재 크게 두 가지로 구분이 된다. The reflective sheet is configured in the form of a plastic sheet or film that can send light in a desired direction in order to implement a visual effect on the light from the light source, and currently the method of making the reflective sheet is divided into two types Becomes

첫 번째 방법은 플라스틱 압출 공정 중에 필러(filler) 또는 첨가제를 넣어 플라스틱 판에서 각각의 필러 또는 첨가제가 반사체 역할을 하게 만드는 방법이다.The first is to add fillers or additives during the plastic extrusion process so that each filler or additive acts as a reflector in the plastic plate.

두 번째 방법은 초미세 발포 공정(Microcellular foaming process, 이하 "MCPs"라 한다) 을 활용하는 방안이다. 상기의 MCPs 공정을 이용하여 만든 플라스틱 내부에는 마이크론 스케일(micron scale)의 미세 기공이 형성되는데, 이러한 미세 기공이 반사체 역할을 함으로써 반사성능을 일으키는 것이다. The second method is to utilize a microcellular foaming process (hereinafter referred to as "MCPs"). The micropores of the micron scale (micron scale) is formed in the plastic made by using the MCPs process, which causes the reflecting performance by acting as a reflector.

현재 상용화된 반사시트의 경우 상기의 두 번째 방법인 MCPs공정을 활용한 MCPET제품이 있는데, 이는 폴리에틸렌테레프탈레이트(poly ethylene terephthalate, 이하 "PET" 라 함) 를 MCPs 공정을 활용하여 제작한 것이다.In the case of currently commercially available reflective sheet, there is an MCPET product using the MCPs process, which is the second method.

그러사 상기와 같은 MCPET 제품은,Then such MCPET products,

첫째, 상대적으로 고가인 PET를 사용하여 반사시트을 제작하므로 그 제조비용이 고가이고,First, since the reflective sheet is made of relatively expensive PET, its manufacturing cost is expensive,

둘째, 단위 체적당 기공의 개수를 확보하기 위하여 반사시트의 두께가 0.8mm 이상이 되어야 한다는 문제점이 있다.Second, in order to secure the number of pores per unit volume, there is a problem that the thickness of the reflective sheet should be 0.8 mm or more.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, 반사시트의 광학적 특성을 향상시키면서 이와 동시에 반사시트의 두께를 감소시키고, 반사시트의 생산 비용을 절감할 수 있는 광반사 특성 증대를 위한 반사시트 제조 방법을 제공하는데 그 목적이 있다.The present invention has been made in view of the above points, while improving the optical properties of the reflective sheet and at the same time reduce the thickness of the reflective sheet, the reflection sheet for increasing the light reflection characteristics that can reduce the production cost of the reflective sheet It is an object to provide a manufacturing method.

상기와 같은 본 발명 광반사 특성 증대를 위한 반사시트 제조 방법은,Reflective sheet manufacturing method for increasing the light reflection characteristics of the present invention as described above,

(a) 플라스틱 재료를 상온에서 1축 연신 또는 2축 연신시키는 단계; 및(a) uniaxially stretching or biaxially stretching the plastic material at room temperature; And

(b) 상기 플라스틱 재료를 이용하여 초미세 발포 공정을 수행하는 단계;(b) performing an ultrafine foaming process using the plastic material;

를 포함하여 구성되는 것을 특징으로 한다.Characterized in that comprises a.

상기와 같은 본 발명 광반사 특성 증대를 위한 반사시트 제조 방법에 의하면, 반사시트의 광학적 특성을 향상시키면서 이와 동시에 반사시트의 두께를 감소시킬 수 있고, 또한 기존의 반사시트에 비하여 생산 비용을 절감할 수 있으므로 다양한 상업적·경제적 효과가 기대된다. According to the reflective sheet manufacturing method for increasing the light reflection characteristics of the present invention as described above, while improving the optical characteristics of the reflective sheet and at the same time can reduce the thickness of the reflective sheet, and also reduce the production cost compared to the conventional reflective sheet As such, various commercial and economic effects are expected.

본 출원에서 사용한 용어는 단지 특정한 실시예를 설명하기 위해 사용된 것으로, 본 발명을 한정하려는 의도가 아니다. 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한 복수의 표현을 포함한다. 본 출원에서, “포함하다” 또는 “가지다” 등의 용어는 명세서상에 기재된 특징, 숫자, 단계, 동작, 구성요소, 부품 또는 이들의 조합한 것이 존재함을 지정하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this application, the terms “comprises” or “having” are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and one or more other It is to be understood that the present invention does not exclude the possibility of the presence or the addition of features, numbers, steps, operations, components, parts, or a combination thereof.

이하, 본 발명을 첨부도면을 참조하여 상세하게 설명한다. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 플라스틱 재료를 상온에서 1축 또는 2축 연신한 후(310), 불활성 기체를 사용하여 상기 플라스틱 재료를 초미세 발포시켜서(320) 원하는 반사시트를 얻는(330)것을 특징으로 한다.The present invention is characterized in that after uniaxially or biaxially stretching the plastic material at room temperature (310), the plastic material is ultra-foamed (320) using an inert gas to obtain the desired reflective sheet (330).

이때 사용되는 가스로는 5 MPa 이상의 불활성 기체를 사용하며, 더욱 상세하게는 이산화탄소, 질소, 헬륨 등을 사용한다. 또한 이때의 압력은 상용 압력 용기의 압력을 유지한 상태에서 공정을 진행하고, 발포 공정에서 사용되는 열전달 매개체의 경우 글리세린, IR 히팅, 열풍 등을 사용할 수 있다. In this case, an inert gas of 5 MPa or more is used as the gas, and more specifically, carbon dioxide, nitrogen, helium, or the like is used. In addition, the pressure at this time proceeds the process while maintaining the pressure of the commercial pressure vessel, in the case of the heat transfer medium used in the foaming process may be used glycerin, IR heating, hot air and the like.

특히 상기 플라스틱 재료는 기존의 PET에 비해 상대적으로 저렴한 폴리올레핀(polyolefin) 계열의 재료를 사용하여 공정이 가능하다.In particular, the plastic material may be processed using a polyolefin-based material, which is relatively inexpensive than conventional PET.

폴리올레핀 계열의 대표적인 예로는 폴리프로필렌 또는 폴리에틸렌을 들 수 있는데, 유리전이 온도 (glass transition temperature)가 도 5에 도시된 바와 같이 상온보다 낮다. 따라서 상온에서 인장이 가능한 리써리 상태(leathery state)에 있게 된다.Representative examples of the polyolefin series include polypropylene or polyethylene, and the glass transition temperature is lower than room temperature as shown in FIG. 5. As a result, it is in a leasey state that can be tensioned at room temperature.

상기와 같은 공정을 통하여 기존의 제품이 가질 수 없는 단위 부피당 미세 기공의 개수(more than 1011/cm3)를 제작할 수 있고 미세 기공의 크기가 10 마이크론(micron) 이하의 크기를 가짐으로써 동일한 두께 내에 미세 기공의 층을 증가시킬 수 있고, 이를 통해 반사시트의 광반사 특성을 향상시킬 수 있다. 이러한 단위 부피당 미세 기공의 개수 증가는 종래 기술에 의한 반사판을 나타낸 도 6과 본 발명에 따른 반사판을 나타낸 도 7을 보면 그 차이가 명백함을 알 수 있다. Through the above process, the number of micropores per unit volume (more than 10 11 / cm 3 ) that existing products cannot have can be produced, and the micropore size has a size of 10 microns or less, which is the same thickness. It is possible to increase the layer of micropores within, thereby improving the light reflection characteristics of the reflective sheet. The increase in the number of micropores per unit volume can be seen in FIG. 6 showing the reflector according to the prior art and FIG. 7 showing the reflector according to the present invention.

샘플Sample 반사율(%)reflectivity(%) MCPET (두께 : 0.8mm)MCPET (thickness: 0.8mm) 93.5493.54 본 발명에 따른 반사판 (두께 : 0.6mm)Reflector according to the present invention (thickness: 0.6 mm) 93.7393.73 본 발명에 따른 반사판 (두께 : 0.5mm)Reflector according to the invention (thickness: 0.5mm) 86.2586.25

또한, 상기의 표 1에서 확인할 수 있듯이 기존 MCPET 보다 두께가 더 얇으면서도 반사율은 오히려 더 높은 반사판을 제조할 수 있다.In addition, as can be seen in Table 1 above, although the thickness is thinner than the existing MCPET, it is possible to manufacture a reflector having a higher reflectance.

또한, 플라스틱 재료를 상온에서 1축 또는 2축 연신하는 단계(310)에서, 열적 물리적 변형을 최소화하기 위하여 첨가제 또는 첨가물을 추가할 수 있다.In addition, in step 310 of uniaxial or biaxial stretching of the plastic material at room temperature, additives or additives may be added to minimize thermal and physical deformation.

이때 첨가 가능한 물질로서 열안정제, 가소체, 활제, 산화방지제, 자외선 안정제, 대전방지제, 윤활제, 핵제, 생물안정제, 충진제, 보강제, 착색재, 내충격제, 난연제, 가교제, 형광증백제, 투과성조절제,thioester, 충격보강제, 무적제, 블로킹방지제, 슬립제 등이 있다.At this time, as a material that can be added, thermal stabilizers, plasticizers, lubricants, antioxidants, ultraviolet stabilizers, antistatic agents, lubricants, nucleating agents, biostabilizers, fillers, reinforcing agents, coloring materials, impact agents, flame retardants, crosslinking agents, optical brighteners, permeability regulators, thioesters, impact modifiers, invincibles, antiblocking agents and slip agents.

또한, 생성된 반사시트를 얻는 단계(330)에서, 열적 물리적 변형을 최소화 하기 위하여 첨가제 또는 첨가물 이용하여 반사시트의 표면에 1층 또는 2층의 추가 레이어를 구성할 수 있다. In addition, in step 330 to obtain the resulting reflective sheet, one or two additional layers may be configured on the surface of the reflective sheet using additives or additives to minimize thermal physical deformation.

이상에서는 본 발명을 특정의 바람직한 실시예에 대하여 도시하고 설명하였으나, 본 발명은 이러한 실시예에 한정되지 않으며, 당해 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 특허청구범위에서 청구하는 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 실시할 수 있는 다양한 형태의 실시예들을 모두 포함한다. While the invention has been shown and described with respect to certain preferred embodiments, the invention is not limited to these embodiments, and those of ordinary skill in the art claim the invention as claimed in the appended claims. It includes all the various forms of embodiments that can be implemented without departing from the spirit.

도 1은 LCD 중 BLU 구성을 나타낸 도면,1 is a view showing a BLU configuration of the LCD,

도 2는 종래의 반사 시트에서 빛의 반사를 나타낸 도면,2 is a view showing the reflection of light in a conventional reflective sheet,

도 3은 본 발명에 따른 반사 시트를 제조하는 방법을 나타낸 순서도,3 is a flowchart showing a method of manufacturing a reflective sheet according to the present invention;

도 4는 본 발명에 따른 반사 시트에서 빛의 반사를 나타낸 도면이다.4 is a view showing the reflection of light in the reflective sheet according to the present invention.

Claims (7)

(a) 폴리올레핀(polyolefin) 계열의 폴리프로필렌 또는 폴리에틸렌으로 이루어지는 플라스틱 재료를 상온에서 1축 연신 또는 2축 연신시키는 단계; 및(a) uniaxially stretching or biaxially stretching a plastic material made of polyolefin-based polypropylene or polyethylene at room temperature; And (b) 상기 플라스틱 재료를 이용하여 초미세 발포 공정을 수행하는 단계;(b) performing an ultrafine foaming process using the plastic material; 를 포함하여 구성되는 것을 특징으로 하는 광반사 특성 증대를 위한 반사시트 제조 방법.Reflective sheet manufacturing method for increasing the light reflection characteristics, characterized in that configured to include. 삭제delete 청구항 1에 있어서,The method according to claim 1, 상기 (b) 단계에 사용되는 기체는 5 MPa 이상의 이산화탄소, 질소, 헬륨 중 어느 하나인 것을 특징으로 하는 광반사 특성 증대를 위한 반사시트 제조 방법. The gas used in the step (b) is at least 5 MPa of carbon dioxide, nitrogen, helium any one of the reflection sheet manufacturing method for increasing the light reflection characteristics, characterized in that. 청구항 3에 있어서,The method according to claim 3, 상기 (b) 단계에서 사용되는 열전달 매개체의 경우 글리세린, IR 히팅, 열풍 중 어느 하나인 것을 특징으로 하는 광반사 특성 증대를 위한 반사시트 제조 방법. In the case of the heat transfer medium used in step (b), the method of manufacturing a reflective sheet for increasing light reflection characteristics, characterized in that any one of glycerin, IR heating, hot air. 청구항 4에 있어서,The method according to claim 4, 상기 (a) 단계 중 플라스틱 재료에 첨가제 또는 첨가물을 추가하여 반사시트의 열적 물리적 변형을 최소화하는 것을 특징으로 하는 광반사 특성 증대를 위한 반사시트 제조 방법. Method of manufacturing a reflective sheet for increasing the light reflection characteristics, characterized in that to minimize the thermal physical deformation of the reflective sheet by adding an additive or additive to the plastic material during the step (a). 청구항 4에 있어서,The method according to claim 4, 상기 (b) 단계 후 생성된 반사시트에 첨가제 또는 첨가물을 이용하여 표면에 1층 또는 그 이상의 층의 추가 레이어를 구성하는 것을 특징으로 하는 광반사 특성 증대를 위한 반사시트 제조 방법. Method for manufacturing a reflection sheet for increasing the light reflection characteristics, characterized in that by using an additive or an additive to the reflection sheet generated after the step (b) to form an additional layer of one or more layers on the surface. 청구항 1에 있어서,The method according to claim 1, 상기 광반사 특성 증대를 위한 반사시트 제조 방법을 이용하여 생성된 반사시트.Reflective sheet generated using the reflective sheet manufacturing method for increasing the light reflection characteristics.
KR1020070069383A 2007-07-11 2007-07-11 Method For Manufacturing Reflector Increasing Light Reflectivity KR100922016B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001348452A (en) * 2000-06-05 2001-12-18 Nitto Denko Corp Polyolefinic resin foam and manufacturing method therefor
WO2006001152A1 (en) * 2004-06-25 2006-01-05 Mitsubishi Denki Kabushiki Kaisha Optical disc, optical disc device, optical disc recording method and optical disc driving method
WO2006011508A1 (en) * 2004-07-30 2006-02-02 Murata Manufacturing Co., Ltd. Hybrid electronic component and method for manufacturing the same
KR20070049038A (en) * 2005-11-07 2007-05-10 가부시끼가이샤 퓨처 비전 Plane light source unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001348452A (en) * 2000-06-05 2001-12-18 Nitto Denko Corp Polyolefinic resin foam and manufacturing method therefor
WO2006001152A1 (en) * 2004-06-25 2006-01-05 Mitsubishi Denki Kabushiki Kaisha Optical disc, optical disc device, optical disc recording method and optical disc driving method
WO2006011508A1 (en) * 2004-07-30 2006-02-02 Murata Manufacturing Co., Ltd. Hybrid electronic component and method for manufacturing the same
KR20070049038A (en) * 2005-11-07 2007-05-10 가부시끼가이샤 퓨처 비전 Plane light source unit

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