JP2001239626A - Synthetic resin film - Google Patents
Synthetic resin filmInfo
- Publication number
- JP2001239626A JP2001239626A JP2000055356A JP2000055356A JP2001239626A JP 2001239626 A JP2001239626 A JP 2001239626A JP 2000055356 A JP2000055356 A JP 2000055356A JP 2000055356 A JP2000055356 A JP 2000055356A JP 2001239626 A JP2001239626 A JP 2001239626A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- film
- titanium oxide
- resin film
- type titanium
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 55
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 55
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000010410 layer Substances 0.000 claims abstract description 32
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002344 surface layer Substances 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 abstract description 8
- 238000010030 laminating Methods 0.000 abstract 1
- 239000002585 base Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 239000011941 photocatalyst Substances 0.000 description 9
- 230000003373 anti-fouling effect Effects 0.000 description 7
- -1 polyoxyethylene Polymers 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000005422 blasting Methods 0.000 description 5
- 229920005672 polyolefin resin Polymers 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000001699 photocatalysis Effects 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000000992 sputter etching Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Laminated Bodies (AREA)
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、親水性、防汚性、
ならびに耐久性を備えた合成樹脂フィルムに関するもの
である。TECHNICAL FIELD The present invention relates to a hydrophilic, antifouling,
And a durable synthetic resin film.
【０００２】[0002]
【従来の技術】食品包装用フィルムや農業用被覆フィル
ムなどの合成樹脂フィルムのうち、その用途によっては
防曇性が要求される場合がある。この性能を付与するた
めにはフィルムに防曇剤を配合することが一般的に行わ
れている。このような防曇剤としては、ポリオキシエチ
レンアルキルエステル、ポリオキシエチレンアルキルエ
ーテル、ソルビタンエステル、ソルビタンエステルエー
テル、グリセリンエステル等の非イオン系界面活性剤が
よく知られている。2. Description of the Related Art Among synthetic resin films such as food packaging films and agricultural coating films, antifogging properties may be required depending on the application. In order to provide this performance, it is common practice to incorporate an anti-fogging agent into the film. As such an antifogging agent, nonionic surfactants such as polyoxyethylene alkyl ester, polyoxyethylene alkyl ether, sorbitan ester, sorbitan ester ether and glycerin ester are well known.
【０００３】しかしながら、単に合成樹脂フィルムに防
曇剤を配合しただけでは防曇効果の持続性が乏しく、ま
た防曇効果の持続性の改良を目的として大量に防曇剤を
配合すると、フィルム表面にブリードアウトした防曇剤
によりフィルムの透明性が損なわれたり、べたつくとい
う問題があった。However, the durability of the anti-fogging effect is poor if the anti-fogging agent is simply added to the synthetic resin film, and if a large amount of the anti-fogging agent is added for the purpose of improving the durability of the anti-fogging effect, the surface of the film is deteriorated. However, there is a problem that the transparency of the film is impaired or sticky due to the anti-fogging agent bleed out.
【０００４】この問題を解決する一つの手段として、近
年、合成樹脂フィルムの表面に光触媒としてアナターゼ
型酸化チタンを担持、あるいは被覆するという手段が種
々提案されている。アナターゼ型酸化チタンは、上記し
た防曇性に加えて、防汚性を付与することができること
が知られており注目を集めている。しかしながらアナタ
ーゼ型酸化チタンを合成樹脂フィルムの表面に担持、あ
るいは被覆するためには、ゾル・ゲル法、溶射法等の煩
雑な処理工程が必要であるとともに、合成樹脂フィルム
の屈曲等によりアナターゼ型酸化チタンからなる層が合
成樹脂フィルムから剥落しやすいという問題があった。
このような問題を避けるために、アナターゼ型酸化チタ
ンを合成樹脂に直接練り込むという方法も考えられる
が、合成樹脂に練り込まれたアナターゼ型酸化チタン粒
子の表面はほぼ完全に合成樹脂で覆われているため、本
来目的とする効果を達成できなかった。さらに、光、中
でも紫外線によって励起された光触媒がラジカルを発生
させ、合成樹脂の劣化を引き起こし、結果として合成樹
脂フィルムの寿命を極端に短縮させてしまうという問題
があった。As one means for solving this problem, various means have recently been proposed for supporting or coating an anatase type titanium oxide as a photocatalyst on the surface of a synthetic resin film. It is known that anatase-type titanium oxide can impart antifouling property in addition to the above-described antifogging property, and is attracting attention. However, in order to carry or coat the anatase type titanium oxide on the surface of the synthetic resin film, complicated processing steps such as a sol-gel method and a thermal spraying method are required, and the anatase type oxidation is caused by bending of the synthetic resin film. There is a problem that the layer made of titanium is easily peeled off from the synthetic resin film.
In order to avoid such a problem, a method of directly kneading anatase-type titanium oxide into a synthetic resin may be considered, but the surface of the anatase-type titanium oxide particles kneaded into the synthetic resin is almost completely covered with the synthetic resin. Therefore, the intended effect could not be achieved. Further, there is a problem that a photocatalyst excited by light, especially ultraviolet light, generates radicals, causing deterioration of the synthetic resin, and as a result, the life of the synthetic resin film is extremely shortened.
【０００５】[0005]
【発明が解決しようとする課題】本発明はこのような状
況に鑑みなされたもので、防曇性、防汚性に優れるとと
もに耐久性においても問題のない合成樹脂フィルムの提
供を目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide a synthetic resin film which is excellent in antifogging property and antifouling property and has no problem in durability.
【０００６】すなわち本発明は、アナターゼ型酸化チタ
ンを実質的に含まず、主として合成樹脂から構成される
基材層の少なくとも片面に、アナターゼ型酸化チタンが
配合された合成樹脂組成物からなる表層が積層されたフ
ィルムであって、該表層がブラスト処理されていること
を特徴とする合成樹脂フィルムを提供するものである。That is, according to the present invention, a surface layer made of a synthetic resin composition containing anatase-type titanium oxide is provided on at least one surface of a base layer mainly made of a synthetic resin, containing substantially no anatase-type titanium oxide. The present invention provides a laminated resin film, wherein the surface layer has been blasted.
【０００７】さらに本発明は、表層に用いられる合成樹
脂組成物が、合成樹脂１００重量部に、アナターゼ型酸
化チタンが０．０１〜５重量部配合されたものであるこ
とを特徴とする上記の合成樹脂フィルムを提供するもの
である。Further, the present invention is characterized in that the synthetic resin composition used for the surface layer is obtained by mixing 0.01 to 5 parts by weight of anatase type titanium oxide with 100 parts by weight of the synthetic resin. It is intended to provide a synthetic resin film.
【０００８】[0008]
【発明の実施の形態】合成樹脂にアナターゼ型酸化チタ
ンを配合して得られ得る合成樹脂フィルムの表面は、通
常図２に示すようにアナターゼ型酸化チタン粒子の表面
が合成樹脂によって覆われている。本発明の第一の骨子
は、この表面をブラスト処理することにより、図１に示
すごとくアナターゼ型酸化チタン粒子をフィルム表面に
露出させることにある。このことにより、アナターゼ型
酸化チタンの光触媒としての機能が効果的に発揮され
る。さらに本発明のもう一つの骨子は、合成樹脂とアナ
ターゼ型酸化チタンからなる組成物から構成される表層
に接する基材層を存在させ、この基材層によって合成樹
脂フィルムの耐久性を確保するということにある。以下
本発明をより詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION The surface of a synthetic resin film which can be obtained by blending an anatase type titanium oxide with a synthetic resin usually has the surface of anatase type titanium oxide particles covered with the synthetic resin as shown in FIG. . The first gist of the present invention is to expose the anatase type titanium oxide particles to the film surface as shown in FIG. 1 by blasting the surface. Thereby, the function as a photocatalyst of anatase type titanium oxide is effectively exhibited. Further, another gist of the present invention is that a base layer in contact with a surface layer composed of a composition comprising a synthetic resin and anatase-type titanium oxide is present, and the durability of the synthetic resin film is ensured by the base layer. It is in. Hereinafter, the present invention will be described in more detail.
【０００９】本発明において表層に用いられる合成樹脂
は、アナターゼ型酸化チタンと溶融混合可能なものであ
れば特に限定されるものでなく例えば、低密度ポリエチ
レン、高密度ポリエチレン、直鎖状低密度ポリエチレ
ン、ポリプロピレン、エチレン−酢酸ビニル共重合体、
エチレン−（メタ）アクリル酸共重合体、エチレン−
（メタ）アクリル酸エステル共重合体等のポリオレフィ
ン系樹脂；ポリアミド、ポリエチレンテレフタレート、
ポリブチレンテレフタレート、ポリメチルメタクリレー
ト、フッ素樹脂、エチレン−酢酸ビニル共重合体鹸化
物、ポリ塩化ビニル、ポリスチレン等が挙げられる。こ
れら合成樹脂の中でも価格的に低廉で、加工が簡便なポ
リオレフィン系樹脂がより好適である。The synthetic resin used for the surface layer in the present invention is not particularly limited as long as it can be melt-mixed with anatase-type titanium oxide. Examples thereof include low-density polyethylene, high-density polyethylene, and linear low-density polyethylene. , Polypropylene, ethylene-vinyl acetate copolymer,
Ethylene- (meth) acrylic acid copolymer, ethylene-
Polyolefin resins such as (meth) acrylate copolymers; polyamides, polyethylene terephthalate,
Examples thereof include polybutylene terephthalate, polymethyl methacrylate, fluororesin, saponified ethylene-vinyl acetate copolymer, polyvinyl chloride, and polystyrene. Among these synthetic resins, a polyolefin resin which is inexpensive and easy to process is more preferable.
【００１０】また、表層に用いられるアナターゼ型酸化
チタンは平均粒子径が１〜１００ｎｍの粒度を有するも
のが好ましい。そして、アナターゼ型酸化チタンの配合
量は表層に用いられる合成樹脂１００重量部に対し、
０．０１〜５重量部の範囲に設定されるのが好ましい。
アナターゼ型酸化チタンの配合量が０．０１重量部未満
であると期待した光触媒機能が発現しない恐れがある。
逆にアナターゼ型酸化チタンの配合量が５重量部を超え
ると、合成樹脂フィルムの強度や耐久性に問題を生じる
恐れがある。なお、アナターゼ型酸化チタンは、それ自
体を直接用いるようにしてもよいし、シリカ、アルミナ
等の各種担体に担持させたものを用いるようにしてもよ
い。The anatase type titanium oxide used for the surface layer preferably has an average particle size of 1 to 100 nm. And the compounding amount of the anatase type titanium oxide is 100 parts by weight of the synthetic resin used for the surface layer,
It is preferably set in the range of 0.01 to 5 parts by weight.
The photocatalytic function expected when the compounding amount of the anatase type titanium oxide is less than 0.01 part by weight may not be exhibited.
Conversely, if the amount of the anatase type titanium oxide exceeds 5 parts by weight, there is a possibility that a problem may occur in the strength and durability of the synthetic resin film. As the anatase type titanium oxide, it may be used directly, or may be one supported on various carriers such as silica and alumina.
【００１１】一方、本発明において基材層に用いる合成
樹脂は、表層で用いるのと同様のものが使用可能であ
る。なお、基材層は前記した表層を支持するとともに、
強度低下を来しやすい表層の強度を補う目的で設けられ
るものである。従って、基材層は極力耐候性のあるもの
としておくことが好ましい。この目的のためには、基材
層はアナターゼ型酸化チタンを実質的に含まない合成樹
脂から主として形成される必要があるとともに、基材層
には各種ラジカル捕捉剤、光安定剤、紫外線吸収剤を配
合しておくことが望ましい。また、基材層は単一層から
なるものでなく、複数の層からなるものであってもよ
い。さらに基材層の厚みは、本発明の合成樹脂フィルム
の全体厚みの６０〜９５％となるようにすることが耐久
性の点から望ましい。On the other hand, as the synthetic resin used for the substrate layer in the present invention, the same synthetic resin as used for the surface layer can be used. In addition, the base material layer supports the surface layer described above,
It is provided for the purpose of compensating for the strength of the surface layer, which is liable to decrease in strength. Therefore, it is preferable that the base material layer has weather resistance as much as possible. For this purpose, the base layer needs to be mainly formed of a synthetic resin substantially free of anatase-type titanium oxide, and the base layer has various radical scavengers, light stabilizers, and ultraviolet absorbers. Is desirably blended. Further, the base layer is not formed of a single layer, but may be formed of a plurality of layers. Further, the thickness of the base layer is desirably 60 to 95% of the total thickness of the synthetic resin film of the present invention from the viewpoint of durability.
【００１２】上記した、合成樹脂、アナターゼ型酸化チ
タン等から積層フィルムを成形する。その方法は特に限
定されるものでなく、インフレーション式共押出成形
法、Ｔダイ式共押出成形法等が挙げられる。A laminated film is formed from the above-mentioned synthetic resin, anatase type titanium oxide or the like. The method is not particularly limited, and examples thereof include an inflation coextrusion method and a T-die coextrusion method.
【００１３】次いで、得られた、積層フィルムを、ブラ
スト処理する。ブラスト処理の方法としてはまず、砥材
を高圧エアーに混入させて吹き付ける方法、所謂、ショ
ットブラスト法が挙げられる。この方法における砥材と
しては、鉄、ステンレス、ジルコニア、アルミニウム、
アルミナ、窒化珪素、炭化珪素、ガラス、砥材、等が用
いられる。そしてその粒度は♯３０よりも微細なものが
望ましい。処理時間、風速等の諸条件は、表層に用いた
合成樹脂の硬度、フィルムの厚み等を考慮して適宜設定
される。ブラスト処理を行うために用いる装置の形式は
特に限定されないが、長巻のフィルムを連続的に供給で
き、自動化されたものが望ましい。ブラスト処理の方法
の中でも最も有効なものが上記したショットブラスト法
であるが、ショットブラスト法以外のブラスト処理方法
としてはヤスリ等による傷つけ処理、スパッタエッチン
グ処理、イオンビーム処理、クロム酸処理、アルカリ処
理等が挙げられる。Next, the obtained laminated film is subjected to a blast treatment. As a method of the blast treatment, first, there is a method of mixing an abrasive with high-pressure air and spraying the mixture, that is, a so-called shot blast method. As abrasives in this method, iron, stainless steel, zirconia, aluminum,
Alumina, silicon nitride, silicon carbide, glass, an abrasive, or the like is used. And the particle size is desirably finer than $ 30. Various conditions such as processing time and wind speed are appropriately set in consideration of the hardness of the synthetic resin used for the surface layer, the thickness of the film, and the like. The type of the apparatus used for performing the blast processing is not particularly limited, but it is preferable that the apparatus be capable of continuously supplying a long-wound film and be automated. Among the blasting methods, the most effective one is the above-mentioned shot blasting method. However, other blasting methods other than the shot blasting method include a flaw treatment by a file or the like, a sputter etching treatment, an ion beam treatment, a chromic acid treatment, and an alkali treatment. And the like.
【００１４】本発明の合成樹脂フィルムの具体的な層構
成は、少なくとも表層と基材層からなる２層構成をとる
ものであるが、表層／基材層／表層という３層構成をと
ってもよい。この場合、両側の表層の少なくとも片方、
より好ましくは両方をブラスト処理するようにする。な
お、表層と基材層の接着性が十分でない場合には両層間
にエチレン−無水マレイン酸共重合体等の変成ポリオレ
フィン樹脂、あるいは該変成ポリオレフィン樹脂を含有
する樹脂組成物からなる層を介在させるようにしてもよ
い。さらに、表層、基材層のいずれか一方、あるいは双
方に変成ポリオレフィン樹脂が含有されるようにしても
よい。また、前にも述べたように、基材層は複数の層か
ら構成されるものであってよい。The specific layer structure of the synthetic resin film of the present invention has a two-layer structure consisting of at least a surface layer and a base material layer, but may have a three-layer structure of surface layer / base material layer / surface layer. In this case, at least one of the surface layers on both sides,
More preferably, both are blasted. When the adhesion between the surface layer and the base material layer is not sufficient, a modified polyolefin resin such as an ethylene-maleic anhydride copolymer or a layer made of a resin composition containing the modified polyolefin resin is interposed between the two layers. You may do so. Further, the modified polyolefin resin may be contained in one or both of the surface layer and the base material layer. Further, as described above, the base material layer may be composed of a plurality of layers.
【００１５】[0015]
【実施例】以下、実施例により本発明の形態を更に詳細
に説明する。なお、これらの実施例により本発明が限定
されるものではない。The embodiments of the present invention will be described in more detail with reference to the following examples. The present invention is not limited by these embodiments.
【００１６】［実施例１］加圧式ニーダーを用いて、低
密度ポリエチレン（住友化学工業株式会社製、スミカセ
ンＦ−２０８）１００重量部と、平均粒子径が３０ｎｍ
のアナターゼ型酸化チタン（テイカ株式会社製、ＡＭＴ
−６００）１重量部とを溶融混練の後、ペレット化し、
光触媒含有組成物を得た。次いで、３層共押出用のＴダ
イを備えた３層共押出式ラボプラストミル（東洋精機株
式会社）を用い、基材層（中間層）としてエチレン−酢
酸ビニル共重合体（住友化学工業株式会社製、エバテー
トＤ−２０１０）１００重量部にヒンダードアミン系光
安定剤を３０００ｐｐｍ配合した組成物を、両表層とし
て前記の光触媒含有組成物を押し出しフィルムを得た。
なお、各層の厚み構成は、表層／基材層／表層＝１０／
６０／１０（μｍ）とした。このようにして得られたフ
ィルムの表面を♯４００のサンドペーパーでブラスト処
理した。次いで、ブラスト処理した面の光触媒性能を評
価した。具体的には、試料にブラックライトを０．５ｍ
Ｗ／ｃｍ2の強度で約２日間照射し、その後試料表面に
シリンジを用いて蒸留水を滴下し、３０秒後の接触角
を、接触角測定器を用いて測定した。この結果を表１に
示す。更に、得られたフィルムの３ヶ月間にわたる屋外
暴露試験の前後における光線透過率（６００ｎｍ）を測
定した。また、屋外暴露試験の前後における引張強度を
測定し、暴露後の引張強度を暴露前の引張強度で除した
値である強度維持率を求めた。これらの結果を表１に示
す。Example 1 Using a pressurized kneader, 100 parts by weight of low-density polyethylene (Sumikacene F-208, manufactured by Sumitomo Chemical Co., Ltd.) and an average particle diameter of 30 nm were used.
Anatase type titanium oxide (manufactured by Teica Corporation, AMT
-600) 1 part by weight and after melt kneading, pelletizing,
A photocatalyst-containing composition was obtained. Next, an ethylene-vinyl acetate copolymer (Sumitomo Chemical Co., Ltd.) was used as a base layer (intermediate layer) using a three-layer coextrusion type lab plast mill (Toyo Seiki Co., Ltd.) equipped with a T die for three-layer coextrusion. A composition in which 3000 ppm of a hindered amine-based light stabilizer was added to 100 parts by weight of Evatate D-2010 (manufactured by a company) was extruded from the photocatalyst-containing composition as both surface layers to obtain a film.
The thickness configuration of each layer is as follows: surface layer / substrate layer / surface layer = 10 /
60/10 (μm). The surface of the film thus obtained was blasted with # 400 sandpaper. Next, the photocatalytic performance of the blasted surface was evaluated. Specifically, a black light of 0.5 m was applied to the sample.
Irradiation was performed at an intensity of W / cm 2 for about 2 days, after which distilled water was dropped on the surface of the sample using a syringe, and the contact angle after 30 seconds was measured using a contact angle measuring device. Table 1 shows the results. Furthermore, the light transmittance (600 nm) of the obtained film before and after an outdoor exposure test for three months was measured. In addition, the tensile strength before and after the outdoor exposure test was measured, and a strength retention ratio, which is a value obtained by dividing the tensile strength after exposure by the tensile strength before exposure, was obtained. Table 1 shows the results.
【００１７】［比較例１］ブラスト処理を行わない以外
は、実施例１と同様にしてフィルムを得た。次いで、実
施例１と同様にして、フィルム面の蒸留水を用いた接触
角を測定した。この結果を表１に示す。更に、得られた
フィルムの３ヶ月間にわたる屋外暴露試験の前後におけ
る光線透過率（６００ｎｍ）を測定した。また、屋外暴
露試験の前後における引張強度を測定し、暴露後の引張
強度を暴露前の引張強度で除した値である強度維持率を
求めた。これらの結果を表１に示す。Comparative Example 1 A film was obtained in the same manner as in Example 1 except that no blast treatment was performed. Next, in the same manner as in Example 1, the contact angle of the film surface using distilled water was measured. Table 1 shows the results. Further, the light transmittance (600 nm) of the obtained film before and after an outdoor exposure test for three months was measured. In addition, the tensile strength before and after the outdoor exposure test was measured, and a strength retention rate, which is a value obtained by dividing the tensile strength after exposure by the tensile strength before exposure, was determined. Table 1 shows the results.
【００１８】［比較例２］実施例１と同様にして光触媒
含有組成物を得た。次いで、Ｔダイを備えた単層押出式
ラボプラストミル（東洋精機株式会社）を用いて光触媒
含有組成物を押し出し、厚み８０μｍのフィルムを得
た。このようにして得られたフィルムの表面を♯４００
のサンドペーパーでブラスト処理した。次いで、実施例
１と同様にして、フィルム面の蒸留水を用いた接触角を
測定した。この結果を表１に示す。更に、得られたフィ
ルムの３ヶ月間にわたる屋外暴露試験の前後における光
線透過率（６００ｎｍ）を測定した。また、屋外暴露試
験の前後における引張強度を測定し、暴露後の引張強度
を暴露前の引張強度で除した値である強度維持率を求め
た。これらの結果を表１に示す。Comparative Example 2 A photocatalyst-containing composition was obtained in the same manner as in Example 1. Subsequently, the photocatalyst-containing composition was extruded using a single-layer extrusion-type Labo Plastomill equipped with a T die (Toyo Seiki Co., Ltd.) to obtain a film having a thickness of 80 μm. The surface of the film obtained in this way was # 400
Blasted with sandpaper. Next, in the same manner as in Example 1, the contact angle of the film surface using distilled water was measured. Table 1 shows the results. Further, the light transmittance (600 nm) of the obtained film before and after an outdoor exposure test for three months was measured. In addition, the tensile strength before and after the outdoor exposure test was measured, and a strength retention rate, which is a value obtained by dividing the tensile strength after exposure by the tensile strength before exposure, was determined. Table 1 shows the results.
【００１９】[0019]
【表１】 [Table 1]
【００２０】表１から明らかなように、実施例１で示さ
れた合成樹脂フィルムは良好な光触媒効果を示すことに
より、親水性、防汚性に優れることがわかる。これに対
し、比較例１で示されたフィルムは、表面をブラスト処
理していないため、光触媒効果の発現が十分でなく、親
水性、防汚性の点で満足できるものではないことがわか
る。さらに、実施例１で示された本発明の合成樹脂フィ
ルムは耐久性の点でも良好な性能を有していることが明
らかである。これに対し、比較例２で示されたフィルム
は、単層構造をとるため耐久性に問題があることがわか
る。As is clear from Table 1, the synthetic resin film shown in Example 1 exhibits a good photocatalytic effect and is thus excellent in hydrophilicity and antifouling property. On the other hand, since the surface of the film shown in Comparative Example 1 was not blasted, the photocatalytic effect was not sufficiently exhibited, and it was found that the film was not satisfactory in terms of hydrophilicity and antifouling properties. Further, it is clear that the synthetic resin film of the present invention shown in Example 1 has good performance in terms of durability. On the other hand, it can be seen that the film shown in Comparative Example 2 has a problem in durability because it has a single-layer structure.
【００２１】[0021]
【発明の効果】以上説明したように本発明によれば、親
水性、防汚性に優れるとともに耐久性においても問題の
ない合成樹脂フィルムを提供することができる。本発明
によって得られる合成樹脂フィルムは従来の防曇剤を配
合して得られたフィルムに比べ、防曇性の持続効果に優
れたものである。更に光触媒の有する防汚性を有するも
のである。このように、本発明の合成樹脂フィルムは包
装用フィルム、農業用フィルムのみならず、各種産業用
資材、生活日常用品の部材として有用であり、産業に利
するところ大であるといえる。As described above, according to the present invention, it is possible to provide a synthetic resin film which is excellent in hydrophilicity and antifouling property and has no problem in durability. The synthetic resin film obtained according to the present invention has an excellent antifogging effect as compared with a film obtained by blending a conventional antifogging agent. Further, it has the antifouling property of the photocatalyst. Thus, the synthetic resin film of the present invention is useful not only as a packaging film and an agricultural film but also as a member of various industrial materials and daily necessities, and it can be said that the synthetic resin film is very useful for industry.
【図１】 本発明の合成樹脂フィルムの模式断面図であ
る。FIG. 1 is a schematic sectional view of a synthetic resin film of the present invention.
【図２】 従来の光触媒を配合した合成樹脂フィルムの
模式断面図である。FIG. 2 is a schematic cross-sectional view of a conventional synthetic resin film containing a photocatalyst.
１ 合成樹脂フィルム ２ 表層 ３ 基材層 ４ アナターゼ型酸化チタン DESCRIPTION OF SYMBOLS 1 Synthetic resin film 2 Surface layer 3 Base layer 4 Anatase type titanium oxide
フロントページの続き Ｆターム(参考） 4F100 AA21B AA21C AA21H AK01A AK01B AK01C AK06 AK68 AL05B AL05C BA02 BA03 BA08 BA10B BA10C CA10B CA10C EJ16B EJ16C GB01 GB23 JB05 JL00 JL06 4G069 AA15 BA04A BA04B BA48A BA48C CD10 EC22X EC22Y ED02 4H020 AA01 AB02 Continued on the front page F-term (reference) 4F100 AA21B AA21C AA21H AK01A AK01B AK01C AK06 AK68 AL05B AL05C BA02 BA03 BA08 BA10B BA10C CA10B CA10C EJ16B EJ16C GB01 GB23 JB05 JL00 JL06 4G0BA04A02BA04A02BA04A02BA04A02BA04A02BA
Claims (2)
ず、主として合成樹脂から構成される基材層の少なくと
も片面に、アナターゼ型酸化チタンが配合された合成樹
脂組成物からなる表層が積層されたフィルムであって、
該表層がブラスト処理されていることを特徴とする合成
樹脂フィルム。1. A surface layer made of a synthetic resin composition containing anatase-type titanium oxide is laminated on at least one surface of a base layer mainly made of a synthetic resin, substantially free of anatase-type titanium oxide. A film,
A synthetic resin film, wherein the surface layer has been blasted.
成樹脂１００重量部に、アナターゼ型酸化チタンが０．
０１〜５重量部配合されたものであることを特徴とする
請求項１に記載の合成樹脂フィルム。2. The synthetic resin composition used for the surface layer contains 100 parts by weight of the synthetic resin and 0.1 part of anatase-type titanium oxide.
The synthetic resin film according to claim 1, wherein the synthetic resin film is blended in an amount of from 0.01 to 5 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000055356A JP2001239626A (en) | 2000-03-01 | 2000-03-01 | Synthetic resin film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000055356A JP2001239626A (en) | 2000-03-01 | 2000-03-01 | Synthetic resin film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001239626A true JP2001239626A (en) | 2001-09-04 |
Family
ID=18576493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000055356A Pending JP2001239626A (en) | 2000-03-01 | 2000-03-01 | Synthetic resin film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001239626A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006326907A (en) * | 2005-05-24 | 2006-12-07 | Three M Innovative Properties Co | Liquid feed member |
| JP2007083527A (en) * | 2005-09-21 | 2007-04-05 | Hotta Rubber Industrial Co Ltd | Method for manufacturing resin-composition-made member having photocatalytic function |
| US7930079B2 (en) * | 2006-03-23 | 2011-04-19 | Denso Corporation | Software system of electronic control unit for vehicle and design method thereof |
| CN113933917A (en) * | 2021-11-22 | 2022-01-14 | 广西五行材料科技有限公司 | Nano material for dewatering and anti-fogging of glasses |
-
2000
- 2000-03-01 JP JP2000055356A patent/JP2001239626A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006326907A (en) * | 2005-05-24 | 2006-12-07 | Three M Innovative Properties Co | Liquid feed member |
| JP2007083527A (en) * | 2005-09-21 | 2007-04-05 | Hotta Rubber Industrial Co Ltd | Method for manufacturing resin-composition-made member having photocatalytic function |
| US7930079B2 (en) * | 2006-03-23 | 2011-04-19 | Denso Corporation | Software system of electronic control unit for vehicle and design method thereof |
| CN113933917A (en) * | 2021-11-22 | 2022-01-14 | 广西五行材料科技有限公司 | Nano material for dewatering and anti-fogging of glasses |
| CN113933917B (en) * | 2021-11-22 | 2023-02-28 | 广西五行材料科技有限公司 | Nano material for dewatering and anti-fogging of glasses |
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