JPH03160031A - Light-scattering filmlike object - Google Patents
Light-scattering filmlike objectInfo
- Publication number
- JPH03160031A JPH03160031A JP29912889A JP29912889A JPH03160031A JP H03160031 A JPH03160031 A JP H03160031A JP 29912889 A JP29912889 A JP 29912889A JP 29912889 A JP29912889 A JP 29912889A JP H03160031 A JPH03160031 A JP H03160031A
- Authority
- JP
- Japan
- Prior art keywords
- light
- scattering
- filmlike
- polybutylene terephthalate
- terephthalate resin
- 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
- 238000000149 argon plasma sintering Methods 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 238000002834 transmittance Methods 0.000 claims abstract description 11
- -1 polybutylene terephthalate Polymers 0.000 claims abstract description 10
- 229920001707 polybutylene terephthalate Polymers 0.000 claims abstract description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 abstract description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 abstract description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- 229920001281 polyalkylene Polymers 0.000 abstract description 2
- WSQZNZLOZXSBHA-UHFFFAOYSA-N 3,8-dioxabicyclo[8.2.2]tetradeca-1(12),10,13-triene-2,9-dione Chemical compound O=C1OCCCCOC(=O)C2=CC=C1C=C2 WSQZNZLOZXSBHA-UHFFFAOYSA-N 0.000 abstract 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 6
- 229920001748 polybutylene Polymers 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002667 nucleating agent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、照明カバー、照明看板、各檀ディスプレイ、
グレージングあるいは透過型スクリーン等光の拡散を目
的とし、特にフィルム等の薄いものでも高い光拡散性と
烏い允透過性を併せ持つ允拡散性フィルム状物に関する
。[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to lighting covers, lighting signboards, various wooden displays,
The present invention relates to a diffusive film material, such as a glazing or a transmission screen, which is used for light diffusion, and which has both high light diffusivity and light transmittance even when it is thin, such as a film.
(従来の技術)
促米よク広く使用している照明カバーや透過型スクリー
ン等の允拡散材科としては、無機物質粉末を合底樹脂申
に分散させたものが一般に用いられている。この場合の
無機物質粉末としては硫酸バリウム、炭酸カルシウム、
二酸化ケイ素などの微粉末が用いられてきた。(Prior Art) As a diffusion material for lighting covers, transmission screens, etc., which are widely used in the field of promotion, materials in which inorganic substance powder is dispersed in a resin material are generally used. In this case, the inorganic powders include barium sulfate, calcium carbonate,
Fine powders such as silicon dioxide have been used.
(発明が解決しようとする課題)
しかし、これらの微粉末を添加した合或衛脂はフィルム
等の薄いものでは光拡散性が低く、高い光拡散性を得る
ために微粉末の添加部数を増加させると允透過性が低下
したク、フィルムが脆くなるなど問題点が生じる。(Problem to be solved by the invention) However, the light diffusivity of the synthetic resin added with these fine powders is low when used in thin materials such as films, and in order to obtain high light diffusivity, the number of fine powders added must be increased. If this happens, problems arise such as decreased gas permeability and brittle film.
また高い光拡散性を維持するためにシート等の厚いもの
を用いると、二次加工が容易でなく、透過型スクリーン
では解像度が低下するなどの欠点がある。Further, if a thick material such as a sheet is used to maintain high light diffusivity, secondary processing is not easy, and a transmission screen has drawbacks such as a decrease in resolution.
(課題を解決するための手段)
本発明者らは上述した如き状況に鑑み、鋭意検討の結果
、フィルム等の薄いものでも高い光拡散性を持つ光拡散
性フィルム状物を見出し本発明に到達した。(Means for Solving the Problem) In view of the above-mentioned situation, the inventors of the present invention have made extensive studies and have found a light-diffusing film-like material that has high light-diffusing properties even when it is thin, such as a film, and has arrived at the present invention. did.
すなわち、本発明の允拡散性フィルム状物は,全光線透
過率が60%以上で、かつ90優以上の曇価を持つポリ
プチレンテレフタレート樹脂からなることを特徴とする
。That is, the light-diffusing film-like material of the present invention is characterized by being made of a polybutylene terephthalate resin having a total light transmittance of 60% or more and a haze value of 90 or more.
以下、本発明を具体的に説明する。The present invention will be specifically explained below.
本発明にかける光拡散性フィルム状物は結晶性の容易さ
の点からポリブチレンテレ7タレート樹脂を使用するこ
とが必須である。またフィルムの曇価としては、照明カ
バーを例にとると,90%未満では照明器具中の1IL
球が透けて見えるため好ましくない。全光烟透過率は高
い万が好1バ60%以上、特に好ましくは80%以上で
ある。It is essential to use polybutylene tere-7 tallate resin for the light-diffusing film-like material according to the present invention from the viewpoint of easy crystallinity. In addition, if the haze value of the film is less than 90%, taking a lighting cover as an example, 1IL in the lighting equipment
This is not desirable because the ball can be seen through it. The total light smoke transmittance is preferably high, preferably 60% or more, particularly preferably 80% or more.
本発明に用いられるポリプチレンテレフタレート樹脂は
、テレフタル酸またはそのエステル94体と1,4−プ
タンジオールから合或され、20モル%以下の他のジカ
ルボン酸、グリコールあるいはポリアルキレンエーテル
グリコール等金共重合してもよい。その極限粘度〔η〕
は25Cフェノール/テトラクロルエタン(重量比1二
1)混合溶媒で測定した値がll6〜1.4の範囲が製
膜性の面からも好ましい。かかるポリプテレンテレ7タ
レート樹脂に核剤、結晶化促進剤等が配合されたものも
好ましく用いられ?。核剤としてはメルク、酸化アンチ
モン、安息香酸塩等の公知のもの、促進剤としては、高
級脂肪fI1あるいはアルコールの誘導体、そのケン価
物等公知のものを用いることが出来る。The polybutylene terephthalate resin used in the present invention is synthesized from terephthalic acid or 94 esters thereof and 1,4-butanediol, and is copolymerized with gold such as 20 mol% or less of other dicarboxylic acids, glycol, or polyalkylene ether glycol. You may. Its limiting viscosity [η]
From the viewpoint of film forming properties, the value measured with a mixed solvent of 25C phenol/tetrachloroethane (weight ratio: 121) is preferably in the range of 116 to 1.4. It is also preferable to use a polypterene 7-talate resin containing a nucleating agent, a crystallization accelerator, etc. . As the nucleating agent, known ones such as Merck, antimony oxide, and benzoate can be used, and as the accelerator, known ones such as higher fat fI1, alcohol derivatives, and saponyl hydroxides thereof can be used.
また、本発明の光拡散性フィルム状物には、熱または光
に対する安定剤、例えば7エノール系、ホスファイト系
安定剤、紫外線吸収剤、アミン系の光安定剤:#加水分
解性等の改質剤、例えばエポキシ系のもの;公知の難燃
化剤;染顔科;可塑剤、さらには本発明の目的を阻害し
ない範囲で他の重合体、例えばボリカーボネート等を必
要に応じ加えることができる。また一般の光拡散材科に
用いられている無機物質粉末等を加えることもできる。In addition, the light-diffusing film material of the present invention may include stabilizers against heat or light, such as 7-enol-based stabilizers, phosphite-based stabilizers, ultraviolet absorbers, amine-based light stabilizers, etc. Additives, such as epoxy-based ones; known flame retardants; dyestuffs; plasticizers, and other polymers such as polycarbonate may be added as necessary to the extent that they do not impede the purpose of the present invention. can. Further, inorganic substance powders used in general light-diffusing materials can also be added.
本発明のフィルム状物は、溶融したポリブチレンテレ7
タレート樹脂を押出機のダイスよク押出し、徐冷して結
晶化させる等の方法によク得ることができる。The film-like material of the present invention is made of molten polybutylene tele7
The tallate resin can be obtained by a method such as extrusion through a die of an extruder, slow cooling, and crystallization.
本発明のフィルム状物は、10〜300μ■程度の厚み
のものが光拡散性材科として好ましく用いられる。The film-like material of the present invention having a thickness of about 10 to 300 .mu.m is preferably used as a light-diffusing material.
(発明の実施例冫 以下、実施例によク本発明をさらに詳しく説明する。(Embodiments of the invention Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施?ll1〜3
極限粘度〔η〕が1.05のポリブチレンテレ7タレー
ト樹脂のべレソトを40龍φの一軸押出機に供給してシ
リンダー温度200〜260C,アダプター釦よびTダ
イ(500sam巾)温度250Cで押出し、エアーギ
ャップ5c!n1冷却ロール温度t−1000.120
℃,140℃にして徐冷し、引取ク速度20m/分で引
取り、廖さ40μmフィルムを得た。得られたフィルム
を日本梢密光学(株)製ボイツク積分球式へ一ズメータ
ー SEP−He−D t−用いて全光線透過率および
曇価を測定した。その結果を表1に示す。implementation? ll1~3 Beresoto, a polybutylene tele7 tallate resin with an intrinsic viscosity [η] of 1.05, is fed into a single screw extruder with a diameter of 40 mm, and the cylinder temperature is 200~260 C, and the temperature of the adapter button and T die (500 sam width) is Extruded at 250C, air gap 5C! n1 cooling roll temperature t-1000.120
The film was slowly cooled to 140° C. and taken off at a drawing speed of 20 m/min to obtain a film with a thickness of 40 μm. The total light transmittance and haze value of the obtained film were measured using a Boitzk integrating sphere type hesometer SEP-He-Dt- manufactured by Nippon Kozue Kogaku Co., Ltd. The results are shown in Table 1.
いずれのフィルムも光線透過率は80%以上と光透過性
が高く、曇価は90%以上で高い光拡散性を示した.
比較例1
冷却ロール温度を30℃として押出されたポリプチレン
テレ7タレート樹脂フィルムを急冷した以外は、実施例
とIWJ様にフィルムを成膜した。得られたフィルムは
表2に示す様に曇価が28優と低く,光拡散性が低かっ
た。All films had high light transmittance, with a light transmittance of 80% or more, and a haze value of 90% or more, showing high light diffusivity. Comparative Example 1 A film was formed in the same manner as in Example and IWJ, except that the cooling roll temperature was set at 30° C. and the extruded polybutylene tele-7 tallate resin film was rapidly cooled. As shown in Table 2, the obtained film had a low haze value of 28 or better and low light diffusivity.
表 1
表
2
(発明の効果)
以上述べてきた如き構或からなる本発明の光拡散性フィ
ルム状物は、高い光線透過率と光拡散性ft有するので
光拡散材料と
して有用である。Table 1 Table 2 (Effects of the Invention) The light-diffusing film-like material of the present invention having the structure as described above has high light transmittance and light-diffusing property ft, and is therefore useful as a light-diffusing material.
Claims (1)
曇価を持つポリブチレンテレフタレート樹脂からなる光
拡散性フィルム状物。(1) A light-diffusing film-like material made of a polybutylene terephthalate resin having a total light transmittance of 60% or more and a haze value of 90% or more.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29912889A JPH03160031A (en) | 1989-11-17 | 1989-11-17 | Light-scattering filmlike object |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29912889A JPH03160031A (en) | 1989-11-17 | 1989-11-17 | Light-scattering filmlike object |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03160031A true JPH03160031A (en) | 1991-07-10 |
Family
ID=17868489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29912889A Pending JPH03160031A (en) | 1989-11-17 | 1989-11-17 | Light-scattering filmlike object |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03160031A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001053391A1 (en) * | 2000-01-20 | 2001-07-26 | Mitsubishi Polyester Film Gmbh | Amorphous, white, flame-retardant, uv-stable, thermoformable film, a method for the production thereof and the use of the same |
WO2002057348A3 (en) * | 2001-01-17 | 2002-10-10 | Mitsubishi Polyester Film Gmbh | Amorphous film coloured in a muted manner, having an antimicrobial finish and consisting of a crystallisable thermoplast, method for the production thereof and use of the same |
WO2005028950A1 (en) * | 2003-09-19 | 2005-03-31 | Sony Corporation | Backlight device and liquid crystal display |
-
1989
- 1989-11-17 JP JP29912889A patent/JPH03160031A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001053391A1 (en) * | 2000-01-20 | 2001-07-26 | Mitsubishi Polyester Film Gmbh | Amorphous, white, flame-retardant, uv-stable, thermoformable film, a method for the production thereof and the use of the same |
WO2002057348A3 (en) * | 2001-01-17 | 2002-10-10 | Mitsubishi Polyester Film Gmbh | Amorphous film coloured in a muted manner, having an antimicrobial finish and consisting of a crystallisable thermoplast, method for the production thereof and use of the same |
WO2005028950A1 (en) * | 2003-09-19 | 2005-03-31 | Sony Corporation | Backlight device and liquid crystal display |
US7185995B2 (en) | 2003-09-19 | 2007-03-06 | Sony Corporation | Backlight device and liquid crystal display |
US7318664B2 (en) | 2003-09-19 | 2008-01-15 | Sony Corporation | Backlight device and liquid crystal display apparatus |
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