JPS6157322A - Manufacture of dazzling-free film - Google Patents
Manufacture of dazzling-free filmInfo
- Publication number
- JPS6157322A JPS6157322A JP59178488A JP17848884A JPS6157322A JP S6157322 A JPS6157322 A JP S6157322A JP 59178488 A JP59178488 A JP 59178488A JP 17848884 A JP17848884 A JP 17848884A JP S6157322 A JPS6157322 A JP S6157322A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- thermoplastic resin
- composite
- dazzling
- glare film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はテレビのブラウン管、コンピューターの表示画
面をはじめ自動車の計器表示板用として可視光領域の光
量をコントロールし、かつ外部光を遮ることによシ、画
面を鮮明にする防眩フィルムの製造方法に関するもので
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to television cathode ray tubes, computer display screens, and automobile instrument display boards to control the amount of light in the visible light range and to block external light. This invention relates to a method for producing an anti-glare film that makes the screen clearer.
最近の電子産業の発展は目を見張るものがあ)、電子機
器の応用分野が各方面に拡大している。The recent development of the electronics industry is remarkable, and the fields of application of electronic devices are expanding in various fields.
テレビのブラウン管をはじめ、ここ数年来急増するオフ
ィスコンピューターの表示画面などは、多くの人々が長
時閲見るようになると、画面の見やすさ、目の疲れなど
が問題となシ、これらの機器を専門に操作する人の間で
は、視力の低下などが職業病として、社会問題化する傾
向゛さえみられる。The display screens of office computers, which have been increasing rapidly over the past few years, including cathode ray tubes in televisions, have become increasingly difficult to read, and as more and more people look at them for long periods of time, problems such as ease of viewing the screen and eye fatigue have arisen. Among professional operators, there is even a tendency for vision loss to become an occupational disease and a social problem.
さらに最近は自動車計器類のデジタル化傾向が顕著であ
り、インパネ回シのデザイン刷新の波のなかで可視光領
域の光量をコントロールできデザインの自由さと安全走
行を満足させる素材が求められておシ、防眩フィルムは
これらの要求を満たすため、使用量が急増している。Furthermore, recently there has been a noticeable trend toward digitalization of automobile instruments, and amid the wave of design innovations for instrument panels, there is a demand for materials that can control the amount of light in the visible light range and satisfy design freedom and safe driving. In order to meet these demands, the amount of anti-glare films used is rapidly increasing.
従来の防眩フィルムは、可視光領域の光量を均一に吸収
するためにガラスペースやゼラチンベースに種々の染料
を組み合わせて添加していたが、染料が長期間使用中に
変色、退色を起こすことが避けられなかった。又、ガラ
スは自由な形状をとることができない点や割れ易いとい
う欠点があシ、ゼラチンは湿気、水に弱くフィルムが汚
れた場合、簡単に洗浄出来なかった。又長期間高湿雰囲
気中に放置された場合、カビが発生するという致命的現
象が起こる。Conventional anti-glare films have been made by adding a combination of various dyes to a glass space or gelatin base in order to uniformly absorb the amount of light in the visible light range, but the dyes tend to discolor or fade during long-term use. was unavoidable. In addition, glass has disadvantages in that it cannot take a free shape and is easily broken, and gelatin is sensitive to moisture and water, so if the film becomes dirty, it cannot be easily cleaned. Furthermore, if it is left in a high humidity atmosphere for a long period of time, mold will grow, which is a fatal phenomenon.
さらに従来の防眩フィルムは光量をコントロールするの
に添加する染料の量を細かく調整する必要があシ、以上
のような製造上の細かい生産管理を経て作られるため、
生産コストは高くならざるおえないのが現状であった。Furthermore, with conventional anti-glare films, it is necessary to finely adjust the amount of dye added to control the amount of light.
The current situation was that production costs had to rise.
本発明は既知の製造方法では不可能であった安価に防眩
フィルムを作る製造方法について共押出技術を応用して
出来ないかと鋭意検討した結果、可視光領域の光量を均
一に吸収する方法として、カーボンブラックを少量均一
分散させた透明性熱可塑性樹脂(C)にその性能が存在
することが見い出され、第1層は無機充填剤を50〜1
50重量部添加し、かつ第2層とは熱融着しないポリオ
レフィン系樹脂囚であり、第2層は、透明性の優れた熱
可塑性樹脂(B)であり、第3層は、熱可塑性樹脂(B
)と熱融着が可能である先記透明性熱可塑性樹脂(C)
で、第4層は第2層の熱可m性樹脂(B)と同一又は異
なる透明性の優れた、かつ第3層の透明性熱可塑性樹脂
(C)と熱融着が可能な熱可塑性樹脂(D)の構成で共
押出を行ない、その後、第1層を剥離することにより、
従来になく安価に防眩フィルムを作ることが可能となる
事を見い出し、本発明を完成するに至ったものである。The present invention was developed as a result of extensive research into the possibility of applying co-extrusion technology to a method of manufacturing an anti-glare film at a low cost, which was not possible using known manufacturing methods. It was discovered that this performance exists in a transparent thermoplastic resin (C) in which a small amount of carbon black is uniformly dispersed, and the first layer contains an inorganic filler of 50 to 1
50 parts by weight is added, and the second layer is a polyolefin resin that does not heat-seal, the second layer is a highly transparent thermoplastic resin (B), and the third layer is a thermoplastic resin. (B
) and the above-mentioned transparent thermoplastic resin (C) that can be thermally fused with
The fourth layer is a thermoplastic resin having excellent transparency, which is the same as or different from the thermoplastic resin (B) of the second layer, and which can be thermally fused with the transparent thermoplastic resin (C) of the third layer. By performing coextrusion with the composition of resin (D) and then peeling off the first layer,
The inventors have discovered that it is possible to produce an anti-glare film at a lower cost than ever before, and have completed the present invention.
本発明は、第1層は無機充填剤を15〜150 、
重量部添加し、かつ第2層とは熱融着しないポリオレフ
ィン系樹脂組成物(2)であり、第2層は、透明性の優
れた熱可塑性樹脂(6)でちシ第3層は熱可塑性樹脂(
B)と熱融着が可能であり、かつカーボンブラックを少
量均一分散させた透明性熱可塑性樹脂(C)で、第4層
は、第2AIi!の熱可塑性樹脂03)と同一又は異な
る透明性の優れた、かつ第3屑の透明性熱可塑性樹脂(
C)と熱融着が可能な熱可塑性樹脂(6)の構成で共押
出を行ない、その後第1層を剥離することを特徴とする
防眩フィルムの製造方法である0
図をもりて本発明の詳細な説明する。第1図は本発明の
共押出した複合フィルムの断面図である。In the present invention, the first layer contains an inorganic filler of 15 to 150%,
The second layer is a polyolefin resin composition (2) that is added in parts by weight and is not heat fused to the second layer, and the second layer is a highly transparent thermoplastic resin (6). Plastic resin (
The fourth layer is a transparent thermoplastic resin (C) that can be thermally fused with B) and has a small amount of carbon black uniformly dispersed therein. The same or different thermoplastic resin 03) with excellent transparency, and the third waste transparent thermoplastic resin (
A method for producing an anti-glare film characterized by co-extruding a composition of C) and a thermoplastic resin (6) which can be thermally fused, and then peeling off the first layer. Detailed explanation of. FIG. 1 is a cross-sectional view of a coextruded composite film of the present invention.
1は無機充填剤を添加したポリオレフィン系樹脂組成物
囚、2.4は透明性の優れた熱可塑性樹脂ノ)、(6)
であり、3はカーボンブラックを少量均一分散させた透
明性熱可塑性樹脂(C)である。第1図に示す4層複合
フィルムの1のポリオレフィン系樹脂組成物(イ)の層
を剥離すると第2図の3層複合フィルムとなる。第2図
の2の透明性の優れた熱可塑性樹脂(B)の層の表面5
は艶消しあるいは梨地状の面となる。1 is a polyolefin resin composition containing an inorganic filler, 2.4 is a thermoplastic resin with excellent transparency, (6)
3 is a transparent thermoplastic resin (C) in which a small amount of carbon black is uniformly dispersed. When the layer of polyolefin resin composition (a) of 1 of the 4-layer composite film shown in FIG. 1 is peeled off, the 3-layer composite film shown in FIG. 2 is obtained. Surface 5 of the layer of thermoplastic resin (B) with excellent transparency in 2 of Fig. 2
has a matte or satin-like surface.
本発明に使用されるポリオレフィン系樹脂とは、ポリエ
チレン、ポリプロピレン、エチレン・酢酸ビニル共重合
体、アイオノマー、ポリブタジェン、エチレン・プロピ
レン共重合体、エチレン・アクリル酸エステル共重合体
等があるが、第2層の透明性の優れた熱可m樹脂との共
押出成形性及び熱融着性を示さない点からポリエチレン
、ポリプロピレンが好ましい。The polyolefin resin used in the present invention includes polyethylene, polypropylene, ethylene/vinyl acetate copolymer, ionomer, polybutadiene, ethylene/propylene copolymer, ethylene/acrylic acid ester copolymer, etc. Polyethylene and polypropylene are preferable because they have excellent layer transparency and do not exhibit coextrusion moldability or heat fusion properties with thermoplastic resins.
ポリオレフィン系樹脂に添加される無機充填剤としては
、シリカ、メルク、炭酸カルシウム及びクレー等が使用
される。無機充填剤の添加量は50重量部以下では第2
層の熱可塑性樹脂(B)の表面が充分に艶消しにならず
又150重量部以上では押出成形が非常に困難となる。As the inorganic filler added to the polyolefin resin, silica, Merck, calcium carbonate, clay, etc. are used. If the amount of inorganic filler added is 50 parts by weight or less, it is
The surface of the thermoplastic resin (B) of the layer will not become sufficiently matte, and if it exceeds 150 parts by weight, extrusion molding will become extremely difficult.
本発明に用いられる透明性の優れた熱可塑性樹脂は、ポ
リアミド、ポリメタクリル酸メチル、ポリメチルペンテ
ン、ポリカーボネート、ポリスチレン、ポリエーテルサ
ルフオン、ポリエーテルイミド、ポリサル7オンなどが
ある。しかし成形性、価格からみて、ポリメチルペンテ
ン、ポリカーボネートが最も好ましい。Thermoplastic resins with excellent transparency used in the present invention include polyamide, polymethyl methacrylate, polymethylpentene, polycarbonate, polystyrene, polyether sulfone, polyetherimide, polysal 7one, and the like. However, from the viewpoint of moldability and cost, polymethylpentene and polycarbonate are most preferred.
又、カーボンブラックは、アセチレンブラック、オイル
ファーネスブラック、サーマルブラック、チャンネルブ
ラックなどが使用できるが最も重要な事は少量のカーボ
ンをいかに均一分散させるかであり、混線機は特に限定
しないが、電子顕微鏡で分散を観察した場合、1万倍の
倍率でみてカーボンの凝集体が全く存在せず、かつカー
ボンブラックの分散の濃淡もみられないように均一分散
している状態が望ましい。もしカーボン凝集体が多数存
在した場合侵入した光が凝集体によシ散乱し、可視光領
域の各色相を平均的に吸収できなくなるからである。Carbon black can be acetylene black, oil furnace black, thermal black, channel black, etc., but the most important thing is how to uniformly disperse a small amount of carbon. When observing the dispersion under a magnification of 10,000 times, it is desirable that the carbon black be uniformly dispersed so that no aggregates of carbon exist at all and no shading of the carbon black is observed. This is because if a large number of carbon aggregates exist, the incoming light will be scattered by the aggregates, making it impossible to absorb each hue in the visible light range on average.
本発明の防眩フィルムの製造方法によシ、従来非常に高
価とされたこの程のフィルムが安価に生産可能となシ、
例えば従来の場合、光量のコントロールの違うフィルム
を作る時は添加する染料の量を変えることによシおこな
われていたが、本発明では、共押出する中間層であるカ
ーボンを少量均一分散させた透明性熱可塑性樹脂(B)
の層の厚みのみを押出す際に変え、3層のトータル厚み
は工業■スミカセンG701)100重量部に炭酸カル
シウム120重量部を混練した樹脂組成物を50μmの
厚みで、第2層及び第4層にはポリテルペン(三井石油
化学工業5 TPX MXOO4)を各30μmで、さ
らに第3層には、上記ポリメチルペンテン100重量部
にカーボンブラック(電気化学工業■デンカブラック)
1重量部を均一分散したコニバウンドを10μmの厚み
の4層複合フィルムを共押出し、フィルム冷却後、第1
層のポリエチレン樹脂組成物を剥離し透明なポリメチル
ペンテン層の表面の中心線平均粗さが20μmの防眩フ
ィルムを得た。By the method for producing an anti-glare film of the present invention, such a film, which was conventionally considered to be very expensive, can be produced at low cost.
For example, in the past, when creating films with different light intensity controls, this was done by changing the amount of dye added, but in the present invention, a small amount of carbon, which is the intermediate layer to be coextruded, is uniformly dispersed. Transparent thermoplastic resin (B)
Only the thickness of the second layer and the fourth layer were changed during extrusion, and the total thickness of the three layers was made by kneading 120 parts by weight of calcium carbonate with 100 parts by weight of Sumikasen G701) to a thickness of 50 μm. The layer contains polyterpene (Mitsui Petrochemical Industries 5 TPX MXOO4) with a thickness of 30 μm each, and the third layer contains 100 parts by weight of the above polymethylpentene and carbon black (Denka Black from Denki Kagaku Kogyo).
A four-layer composite film with a thickness of 10 μm was coextruded with 1 part by weight of Konibound uniformly dispersed, and after cooling the film, the first
The polyethylene resin composition of the layer was peeled off to obtain an anti-glare film having a surface of a transparent polymethylpentene layer with a center line average roughness of 20 μm.
この防眩フィルムの可視光領域の吸収を調べたところ第
3図の様な吸収スペクトルを得た。When the absorption of this anti-glare film in the visible light region was investigated, an absorption spectrum as shown in FIG. 3 was obtained.
(2)第1層として゛ポリプロピレン(住友化学工業■
ノーブレンFC−240) 100重量部にタルク3
0重量部を混線した樹脂組成物を200μmの厚みで、
第2/!及び第4層にはポリカーボネート(帝人化成■
パンライ) K −1300)を各100μmの厚みで
、さらに第3層に上記ポリカーボネート100tfL部
にカーボンブラック(キャボット社C3X−99)1.
5重量部を均一分散したコンパウンドを5μmの厚みで
ある4層複合シートを共押出し、フィルム冷却後、第1
層のポリプロピレン樹脂組成物を剥離し、透明なポリカ
ーボネート層の表面の中心線平均粗さが10μmの梨地
状の表面をもつ防眩フィルムを得た。この防眩フィルム
の可視光領域の吸収を調べたところ第4図の様な吸収ス
ペクトルを得た。(2) As the first layer, polypropylene (Sumitomo Chemical Co., Ltd.)
Noblen FC-240) 3 parts of talc to 100 parts by weight
A resin composition mixed with 0 parts by weight was prepared with a thickness of 200 μm,
2nd/! And the fourth layer is polycarbonate (Teijin Kasei ■
Panrye) K-1300) with a thickness of 100 μm each, and carbon black (Cabot C3X-99) 1.
A 4-layer composite sheet with a thickness of 5 μm was coextruded with 5 parts by weight of the compound uniformly dispersed, and after cooling the film, the first
The polypropylene resin composition of the layer was peeled off to obtain an antiglare film having a satin-like surface with a center line average roughness of 10 μm on the surface of the transparent polycarbonate layer. When the absorption of this anti-glare film in the visible light region was investigated, an absorption spectrum as shown in FIG. 4 was obtained.
第1図は本発明の中間品の複合フィルムの断面図、第2
図は本発明の防眩フィルムの断面図、第3図及び第4図
は実施例1.2における各吸収スペクトルを表わす図で
ある。
特許出願人 住友ベークライト株式会社第2図Figure 1 is a cross-sectional view of the intermediate composite film of the present invention;
The figure is a cross-sectional view of the anti-glare film of the present invention, and FIGS. 3 and 4 are diagrams showing absorption spectra in Example 1.2. Patent applicant: Sumitomo Bakelite Co., Ltd. Figure 2
Claims (3)
、かつ第2層とは熱融着しないポリオレフィン系樹脂組
成物(A)であり、第2層は、透明性の優れた熱可塑性
樹脂(B)であり、第3層は、熱可塑性樹脂(B)と熱
融着が可能であり、かつカーボンブラックを少量均一分
散させた透明性熱可塑性樹脂(C)で、第4層は、第2
層の熱可塑性樹脂(B)と同一又は異なる透明性の優れ
た、かつ第3層の透明性熱可塑性樹脂(C)と熱融着が
可能な熱可塑性樹脂(D)の構成で共押出を行ない、そ
の後第1層を剥離することを特徴とする防眩フィルムの
製造方法。(1) The first layer is a polyolefin resin composition (A) to which 15 to 150 parts by weight of an inorganic filler is added and which is not thermally bonded to the second layer. The third layer is a thermoplastic resin (B), and the third layer is a transparent thermoplastic resin (C) that can be thermally bonded to the thermoplastic resin (B) and has a small amount of carbon black uniformly dispersed therein. The second layer
Co-extrusion with a thermoplastic resin (D) having excellent transparency, which is the same as or different from the thermoplastic resin (B) of the layer, and which can be thermally fused with the transparent thermoplastic resin (C) of the third layer. 1. A method for producing an anti-glare film, the method comprising the steps of: carrying out an anti-glare film, and then peeling off the first layer.
チルペンテンである特許請求の範囲第1項記載の防眩フ
ィルムの製造方法。(2) The method for producing an anti-glare film according to claim 1, wherein the thermoplastic resins (B), (C) and (D) are polymethylpentene.
ーボネートである特許請求の範囲第1項記載の防眩フィ
ルムの製造方法。(3) The method for producing an anti-glare film according to claim 1, wherein the thermoplastic resins (B), (C) and (D) are polycarbonate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59178488A JPS6157322A (en) | 1984-08-29 | 1984-08-29 | Manufacture of dazzling-free film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59178488A JPS6157322A (en) | 1984-08-29 | 1984-08-29 | Manufacture of dazzling-free film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6157322A true JPS6157322A (en) | 1986-03-24 |
Family
ID=16049333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59178488A Pending JPS6157322A (en) | 1984-08-29 | 1984-08-29 | Manufacture of dazzling-free film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6157322A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5234648A (en) * | 1990-06-05 | 1993-08-10 | General Electric Company | Method of coextruding a plate-shaped product |
US5258215A (en) * | 1990-06-05 | 1993-11-02 | General Electric Company | Method of coextruding a plate-shaped product and the products thus obtained |
WO1994004358A1 (en) * | 1992-08-25 | 1994-03-03 | Hp-Chemie Pelzer Research & Development Ltd. | Process for manufacturing decorable moulded parts |
-
1984
- 1984-08-29 JP JP59178488A patent/JPS6157322A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5234648A (en) * | 1990-06-05 | 1993-08-10 | General Electric Company | Method of coextruding a plate-shaped product |
US5258215A (en) * | 1990-06-05 | 1993-11-02 | General Electric Company | Method of coextruding a plate-shaped product and the products thus obtained |
WO1994004358A1 (en) * | 1992-08-25 | 1994-03-03 | Hp-Chemie Pelzer Research & Development Ltd. | Process for manufacturing decorable moulded parts |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6736958B2 (en) | Transmissive transparent screen, video display system and video display method | |
JPWO2016068087A1 (en) | Transmission type transparent screen, video display system, and video display method | |
JPH0618991A (en) | Two-layer back projection screen | |
US20070098998A1 (en) | Diffusion sheet and manufacturing method thereof | |
JPH08313708A (en) | Lens sheet for liquid crystal display device and its production | |
KR101914376B1 (en) | Double-sided adhesive tape | |
TWI281040B (en) | Optical filtering/electromagnetic screening structure | |
JPS6157322A (en) | Manufacture of dazzling-free film | |
JPS6168231A (en) | Preparation of glare-proof film | |
EP1219410B1 (en) | Optical semitransmission reflection material | |
US4591525A (en) | Transparent thermoplastic sheet | |
JPH10128898A (en) | Resin composite panel molded body, composite sheet and its manufacture | |
JPH08313707A (en) | Light controlling functional sheet for liquid crystal display device and its production | |
JPH0682810A (en) | Light control material | |
JPS6225198B2 (en) | ||
JPH06305075A (en) | Highly sharp laminated metal plate and decorative sheet used therein | |
JPH10260475A (en) | Reflection type projection screen | |
JPH03161644A (en) | Heat wave absorptive plate | |
JP4914140B2 (en) | Light diffusing sheet, manufacturing method thereof, and use thereof | |
JP2002240206A (en) | Box-like structure having high design quality and its application | |
CN214202981U (en) | Display screen protective glass | |
JPS6129004A (en) | Light transmitting cover for lighting fixture | |
CN212933190U (en) | Edge blue light eliminating structure of liquid crystal display | |
JP2000084995A (en) | Resin sheet and its manufacture | |
JPH10319231A (en) | Selected wavelength absorbable sheet and composite sheet |