JPS6320334A - Transparent, gas-barrier film - Google Patents
Transparent, gas-barrier filmInfo
- Publication number
- JPS6320334A JPS6320334A JP16523886A JP16523886A JPS6320334A JP S6320334 A JPS6320334 A JP S6320334A JP 16523886 A JP16523886 A JP 16523886A JP 16523886 A JP16523886 A JP 16523886A JP S6320334 A JPS6320334 A JP S6320334A
- Authority
- JP
- Japan
- Prior art keywords
- film
- gas barrier
- fine powder
- barrier film
- defects
- 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
- 230000004888 barrier function Effects 0.000 claims abstract description 32
- 230000007547 defect Effects 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000002985 plastic film Substances 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 25
- 239000002245 particle Substances 0.000 abstract description 12
- -1 polyethylene terephthalate Polymers 0.000 abstract description 12
- 239000004927 clay Substances 0.000 abstract description 11
- 229920005989 resin Polymers 0.000 abstract description 8
- 239000011347 resin Substances 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 6
- 239000005022 packaging material Substances 0.000 abstract description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 6
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 6
- 238000004898 kneading Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000454 talc Substances 0.000 abstract description 3
- 229910052623 talc Inorganic materials 0.000 abstract description 3
- 238000005054 agglomeration Methods 0.000 abstract description 2
- 230000002776 aggregation Effects 0.000 abstract description 2
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 2
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 111
- 239000007789 gas Substances 0.000 description 23
- 230000035699 permeability Effects 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 239000005033 polyvinylidene chloride Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 108700025474 F 372 Proteins 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 239000002960 lipid emulsion Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野−１
本発明は、ガスバリヤ性の優れた透明なプラスチックフ
ィルムに関するものであり、さらに詳しくは、包装材料
等に使用されるガスバリヤ性に優れ、かつ、透明性にも
優れたプラスチックフィルムに関するものである。Detailed Description of the Invention [Industrial Field of Application-1] The present invention relates to a transparent plastic film with excellent gas barrier properties, and more specifically, a transparent plastic film with excellent gas barrier properties and This relates to a plastic film that also has excellent transparency.
１゛従米の技術−１
食品、医薬品、化学薬品等の包装材料に使用されるプラ
スチックフィルムには、包装された内容物の変質を防ぐ
ために、水蒸気や酸素ガスなどのがス透過性の小さい材
質のものが使用されている。1゛Journey's technology - 1 Plastic films used for packaging foods, pharmaceuticals, chemicals, etc. are made of materials with low permeability to water vapor and oxygen gas to prevent deterioration of the packaged contents. are used.
そして、さらに高度のガスバリヤ性が必要な包装材料の
場合には、プラスチックフィルムにアルミニウム箔を貼
り合せたものや、プラスチックフィルムの表面にアルミ
ニウムを蒸着させたものが用いられてきた。In the case of packaging materials that require even higher gas barrier properties, materials in which aluminum foil is bonded to a plastic film, or materials in which aluminum is vapor-deposited on the surface of a plastic film have been used.
しかしながら、このような金属箔や蒸着膜を構成要素と
する包装材料は、水蒸気や酸素などに対するヴスバリャ
性には優れているものの、不透明であり、内容物を外か
ら見ることができないという欠点があって、包装材料と
しては適当でない面があった。However, although packaging materials made of metal foil or vapor-deposited films have excellent resistance to water vapor and oxygen, they are opaque and have the disadvantage that the contents cannot be seen from the outside. Therefore, it was not suitable as a packaging material.
一方、ポリプロピレンフィルム、ポリエステルフィルム
、ポリアミドフィルムに、ポリ塩化ビニリデンを主成分
とする樹脂のフィルムをラミネートしたマ）、ラミネー
トする代わりにポリ塩化ビニリデンを主成分とする！Ｊ
（脂のエマル７ョンまたは溶液を塗布したフィルムが、
ガスバリヤ性が要求される用途で使用されている。On the other hand, polypropylene film, polyester film, or polyamide film is laminated with a resin film whose main component is polyvinylidene chloride (Ma), which uses polyvinylidene chloride as the main component instead of laminating! J
(A film coated with a fat emulsion or solution is
Used in applications that require gas barrier properties.
しかしながら、上記ポリプロピレンフィルム、ポリエス
テルフィルム、ポリアミドフィルム等の従来のフィルム
は、フィルムの印ｉ工程、フィルムの積層、製袋、他物
質の塗布の各工程等のあと加工を逐行する際にフィルム
同士が付着しあうのを防止するために、原料ＰＡ虞の製
造工程および／またはフィルムの製造工程で、原料（ｊ
（脂を相溶性のない粒径が０ 、１ ”−５μのクレー
、タルク、炭酸カルシウム、シリカ等の無代系の微細粉
末を、１００〜１０，０００９ｐ論の範囲で添加し、フ
ィルム表面を粗くし、滑り性が改良されている。However, with conventional films such as the polypropylene film, polyester film, and polyamide film, the films are not easily bonded to each other during processing after the film marking process, film lamination, bag making, coating with other substances, etc. In order to prevent the materials from adhering to each other, the raw materials (j
(A fine powder of clay, talc, calcium carbonate, silica, etc., with a particle size of 0.1"-5μ, which is incompatible with fat, is added in the range of 100 to 10,0009p, and the film surface is It is roughened and has improved slipperiness.
上のような従来のフィルムでは、原料？Ｊｆ脂とフィル
ム表面粗面化剤として使用されるＷ、８！系のｍｓ＋粉
末とは相溶性がないために、樹脂と微細粉末との界面に
微小なボイドが生じ、フィルムを延伸した場合にはボイ
ドは拡大され、さらにはフィルム表面に微細な傷をっ（
る原因となり、これらボイドやフィルム表面に生じた傷
は、フィルムのガスバリヤ性低下の原因となっている。In the conventional film like above, what is the raw material? W used as Jf fat and film surface roughening agent, 8! Because it is not compatible with the ms+ powder in the system, minute voids are created at the interface between the resin and the fine powder, and when the film is stretched, the voids are enlarged and even cause minute scratches on the film surface.
These voids and scratches on the film surface are the cause of deterioration of the gas barrier properties of the film.
［発明が解決しようとした問題点」
本発明の目的は、基体フィルム中に分散された無機系の
微細粉末に白米する欠陥、αが少なく、優れたガスバリ
ヤ性と優れた透明性を発揮するプラスチックフィルムを
提供することにある。[Problems to be Solved by the Invention] The purpose of the present invention is to create a plastic that exhibits excellent gas barrier properties and excellent transparency, with few defects and α caused by polishing in the inorganic fine powder dispersed in the base film. The goal is to provide film.
「問題点を解決するための手段」
しかして本発明の要旨とするところは、透明ガスバリヤ
性フィルムにおいて、フィルム中に分散された無機系の
微細粉末に白米する欠陥点の平均径が４μ以下で、かつ
、１平方メートル当りの個数が１０４個以下であること
を特徴とする透明ガスバリヤ性フィルムに存する（第１
発明）、。"Means for Solving the Problems" The gist of the present invention is to provide a transparent gas barrier film in which the average diameter of the defect points formed in the fine inorganic powder dispersed in the film is 4μ or less. , and the number of particles per square meter is 104 or less (first aspect).
invention),.
そして第２発明は、上記＃Ｓ１発明に係るフィルムの少
なくとも片面に、池の透明なプラスチックフィルムが積
層されてなることを特徴とする透明ガスバリヤ性フィル
ムを要旨とする。The gist of the second invention is a transparent gas barrier film, characterized in that a transparent plastic film is laminated on at least one side of the film according to the #S1 invention.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明に係る基体フィルムは、それ自体でガスバリヤ性
の優れたフィルムがよい。その具体例としては、ポリ塩
化ビニルフィルム、塩化ビニルを主成分とする共重合体
フィルム、ポリ塩化ビニリデンフィルム、塩化ビニリデ
ンを主７＆分とする共重合体のフィルム、ポリエチレン
テレフタレートフィルム、ポリテトラエチレンフィルム
、ポリカーボネートフィルム、ポリアミド類のフィルム
、エチレン−酢酸ビニル共重合体のフィルム等があげら
れる。The base film according to the present invention is preferably a film that itself has excellent gas barrier properties. Specific examples include polyvinyl chloride film, copolymer film mainly composed of vinyl chloride, polyvinylidene chloride film, copolymer film mainly composed of vinylidene chloride, polyethylene terephthalate film, and polytetraethylene film. , polycarbonate film, polyamide film, ethylene-vinyl acetate copolymer film, and the like.
基体フィルムは、未延伸のものであってよいが、延伸さ
れているものが好ましい。延伸されたフィルムの場合に
は、少なくとも一袖方向に３倍以上に延伸されたものが
特に好ましい。延伸することによってフィルムのガスバ
リヤ性が向」−するからでｊ＞９、結晶性ｔＭ脂を原料
としたフィルムの場合には、延伸によるガスバリヤ性の
向−ヒ効果が顕著である。The base film may be unstretched, but preferably stretched. In the case of a stretched film, it is particularly preferred that the film be stretched three times or more in at least one sleeve direction. Since the gas barrier properties of the film are improved by stretching, in the case of a film made from crystalline tM resin, where j>9, the effect of stretching on the gas barrier properties is significant.
本発明の目的を効果的に達成するためには、フィルム中
に分散された無機系の微細粉末に白米する欠陥点の平均
径が４μ以下で、かつ、１乎方メートル当りの個数が１
０４個以下でなければならな〜１゜
フィルムの表面を粗面化し、フィルムのあと加工を行な
う場合の作業性を改善する目的で、フィルム化前の原料
樹脂に、平均０．１−＆ ５μ程度のクレー、炭酸カル
シウム、タルク、シリカ等が一汗通使用される。これら
微細粉末は、粒子が爪独でフィルム中に分散しているこ
とは少なく、数個の粒子が凝集した状態でフィルム中に
分散しているのが汗通である。従って、フィルム中に分
散している微細粉末の径は、もとの径の数倍に達するこ
とがあり、これがフィルムのボイドや傷などの欠陥点と
なり、フィルムのガスバリヤ性低下の原因となる。In order to effectively achieve the purpose of the present invention, it is necessary that the average diameter of the defects in the fine inorganic powder dispersed in the film be 4μ or less, and that the number of defects per square meter be 1.
In order to roughen the surface of the film and improve workability when processing the film after processing, an average of 0.1- & 5μ is added to the raw material resin before film formation. Clay, calcium carbonate, talc, silica, etc. are used regularly. These fine powder particles are rarely dispersed in the film by themselves, but rather are dispersed in the film in the form of agglomerations of several particles. Therefore, the diameter of the fine powder dispersed in the film can reach several times the original diameter, which causes defects such as voids and scratches in the film and causes a decrease in the gas barrier properties of the film.
本発明者らの実験によれば、フィルム化前の原料樹脂に
無代系の微細粉末を配合する場合であっても、微細粉末
に白米する欠陥点の平均径を４μ以下とし、１平方メー
トル当りの欠陥点の数を１０４個以下に調節すると、フ
ィルムのガスバリヤ性は低下しないことが１号っな。According to experiments by the present inventors, even when blending a non-forming fine powder into the raw material resin before film formation, the average diameter of the defect points polished in the fine powder is set to 4μ or less, and the The first thing is that when the number of defect points is adjusted to 104 or less, the gas barrier properties of the film do not deteriorate.
フィルムに配合した微細粉末に白米する欠陥点の平均径
、単位面積当ｌ）の個数を上の範囲にｉｉｓするには、
微細粉末の１須、直径、添加量、混練方法、混線条件を
選コζことにより可能である。例えば、平均粒径が１μ
以下の微細粉末をできるだけ１１１＠させ樹脂製造時に
少量配合してお（方法とか、平均粒径が１μ以下の微細
粉末を極めて少量配合するにとどめる方法、全く配合し
ない方法等があげられる。In order to keep the average diameter of the defect points polished in the fine powder blended into the film (per unit area) within the above range,
This is possible by selecting the type of fine powder, diameter, amount added, kneading method, and mixing conditions. For example, if the average particle size is 1μ
Examples of methods include blending a small amount of the following fine powder as much as possible during resin production, a method of blending only a very small amount of fine powder with an average particle size of 1 μ or less, and a method of not blending it at all.
Ｉ−記性質を備えたフィルムを製造するには、押出法、
溶液キャスト法、イン７レーシシン法等の公知の方法に
よることができる。I-To produce a film with the above properties, an extrusion method,
Known methods such as the solution casting method and the in-7 resin method can be used.
このフィルムを延伸するには、フィルム化工程で同時に
、またはフィルム化工程とは別工程で、もしくはフィル
ム化工程で一部延伸し次のフィルム化工程とは別の工程
で残りを延伸する、等いずれかのか法によればよい。フ
ィルムの延伸方法には特に制限がなく、テンター法、チ
ューブラ−法、ロール法などの従来から知られている方
法によればよい。To stretch this film, it can be stretched simultaneously in the film forming process, in a separate process from the film forming process, or partially stretched in the film forming process and then stretched in a separate process from the next film forming process, etc. Either law may apply. There is no particular restriction on the method of stretching the film, and conventionally known methods such as the tenter method, tubular method, and roll method may be used.
本発明の目的は、上記欠陥点が少なく、かつ、欠陥点の
個数も少ないフィルムを基体フィルムとし、その少なく
とも片面に、他の透明なプラスチックフィルムを積層し
た積層フィルムによっても効果的に達成される。The object of the present invention can also be effectively achieved by a laminated film in which a film having fewer defective points and a smaller number of defective points is used as a base film, and another transparent plastic film is laminated on at least one side of the base film. .
基体フィルムに積層できる他の透明なプラスチックフィ
ルムとしては、ポリエチレンフィルム、エチレンを主成
分とする共重合体のフィルム、ポリプロピレンフィルム
、プロピレンを主成分とする共ｆｆｉ 合体のフィルム
、ポリスチレンフィルム、そのほか基体フィルムになし
うる例としてあげられた前記各種フィルムがあげられる
。これらフィルムは、未延伸であっても延伸されたもの
であってもよい。Other transparent plastic films that can be laminated to the base film include polyethylene film, ethylene-based copolymer film, polypropylene film, propylene-based copolymer film, polystyrene film, and other base films. The above-mentioned various films can be mentioned as possible examples. These films may be unstretched or stretched.
ｆｆｆ屑フィルムを製造するには、接着剤を使用して積
層接着する方法、共押出法等の公知の方法で５！造する
ことができる。接着剤を使用して積Ｈ４接着する場合に
おいて使用可能な接着剤としては、ウレタン系接着剤、
アクリル系接着剤、ポリエステル系接着剤等があげられ
る。これらは、有機溶媒に溝肩した形態で使用するのが
よく、基体フィルムの表面に、ロールコート法その他公
知の方法で接着剤を塗布し、溶媒を揮散させたのち、こ
の接着剤塗布面に、ロール状に巻いた積層用フィルムを
巻き戻しながら重ね、ロールで押圧して積層する。fff scrap film can be produced using known methods such as lamination using an adhesive or coextrusion. can be built. Adhesives that can be used when bonding the product H4 using an adhesive include urethane adhesive,
Examples include acrylic adhesives and polyester adhesives. These are best used in the form of a groove coated with an organic solvent.The adhesive is applied to the surface of the base film by a roll coating method or other known method, and after the solvent is evaporated, the adhesive is applied to the surface coated with the adhesive. , the laminating film wound into a roll is rolled back and stacked, and then laminated by pressing with a roll.
本発明に係る透明ガスバリヤ性フィルムの表面には、一
方または双方に、フィルムのヒートシール性を向上させ
る物質を塗布しておくと、透明ガスバリヤ性フィルムか
ら機密袋を製造したり、透明ガスバリヤ性フィルムをｆ
ｉｆｆｉ容器の蓋として使用する際に、好適である。ヒ
ートシール性を向ヒさせる物質としては、低密度ポリエ
チレン、エチレン−酢酸ビニル共重合体、ポリプロピレ
ン、アイオノマー等があげられる。これらは、溶液に溝
肩してフィルム表面に塗布するか、薄いフィルム状にし
て積層するのがよい。If one or both of the surfaces of the transparent gas barrier film according to the present invention are coated with a substance that improves the heat sealing properties of the film, it is possible to manufacture airtight bags from the transparent gas barrier film, f
Suitable for use as a lid for an iffi container. Examples of substances that improve heat sealability include low density polyethylene, ethylene-vinyl acetate copolymer, polypropylene, and ionomer. These are preferably applied to the surface of the film by dipping into a solution or laminated in the form of a thin film.
本発明に係る透明ガスバリヤ性フィルムの厚さは、ガス
バリヤ性、強度、柔軟性、経済性および用途等を勘案し
て５〜５００μの範囲で選ｊこのがよい。中でも好まし
いのは１Ｏ−ｕ２００μであり、さらに好ましいのは１
２〜１００μの厚さである。The thickness of the transparent gas barrier film according to the present invention is preferably selected within the range of 5 to 500 μm, taking into consideration gas barrier properties, strength, flexibility, economic efficiency, usage, etc. Among them, 1O-u200μ is preferable, and 1O-u200μ is more preferable.
The thickness is 2-100μ.
透明ガスバリヤ性フィルムが積層フィルムである場合に
は、基体フィルムと他の透明なプラスチックフィルムと
を積層したものが、」−記の範囲となるように、適宜選
択すればよい。When the transparent gas barrier film is a laminated film, the laminated film of the base film and another transparent plastic film may be selected as appropriate so that it falls within the range indicated below.
「発明の効果」
本発明に係る透明ガスバリヤ性フィルムは、透明性に優
れ、かつ、ガスバリヤ性にも優れてす３す、柔軟性があ
って、強度および経済性の面でも優れたものである。従
って、食品、医薬品、化学薬品等の包装材料として、ま
たは、高度のガスバリヤ性が要求されるものの包装材料
として、広範囲の用途に用いることができ、その産業上
の利用価値は極めて大である。"Effects of the Invention" The transparent gas barrier film according to the present invention has excellent transparency and gas barrier properties, is flexible, and is excellent in terms of strength and economy. . Therefore, it can be used in a wide range of applications, such as as a packaging material for foods, medicines, chemicals, etc., or as a packaging material for items that require a high degree of gas barrier property, and its industrial utility value is extremely large.
「実施例」
以下、本発明を実施例にもとづいて、また比較例と対照
させながら詳細に現明するが、本発明はその要詣を超乏
ない限り、以下の例に限定されるものではない。"Examples" The present invention will be explained in detail based on Examples and in contrast with comparative examples, but the present invention is not limited to the following examples unless the gist of the invention is overshadowed. do not have.
なお、以下の例において、水蒸気透過率（透湿度）はＡ
ＳＴＭ Ｆ３７２にもとづいて、４０℃×９０％ＲＨ
の条件において測定したものであり、酸素透過率はモグ
ンコントロール社の０Ｘ−ＴＲＡＮｌｏｏを用いて、３
０℃×８０％ＲＨの条件下において測定したものである
。In addition, in the following example, the water vapor permeability (moisture permeability) is A
Based on STM F372, 40℃ x 90%RH
The oxygen permeability was measured under the following conditions using Mogun Control's 0X-TRANloo.
Measured under the conditions of 0° C. x 80% RH.
実施例１
ポリエチレンテレフタレートｉｏｏｆｆｉｚｇに対して
、平均粒子径０．３μのクレーを１０ｐｐｍ秤量し、プ
レングーで混合したのち、押出機で溶融し、Ｔ−グイか
らフィルム状に押出し、厚さ２０μの無延伸フィルムを
得た。Example 1 Weighed 10 ppm of clay with an average particle size of 0.3 μm to polyethylene terephthalate iooffizg, mixed it with a pre-goo, melted it with an extruder, extruded it into a film from a T-goo, and made an unstretched film with a thickness of 20 μm. Got the film.
このフィルムの２０ケ所をランダムに定めて、欠陥点の
平均径、欠陥、αの数を、顕微鏡によって観察した。こ
の測定値を統計処理した結果を、第１表に示すに
のフィルムについて、水蒸気透過率と酸素透過率を測定
した結果を、ｍ１表に示す。Twenty locations on this film were randomly selected, and the average diameter of defect points, defects, and the number of α were observed using a microscope. Table m1 shows the results of statistical processing of the measured values for the water vapor permeability and oxygen permeability of the films shown in Table 1.
実施例２
実施例１に記載の例において、原料ポリエチレンテレフ
タレートに配合、混合したクレーの量を１１０００ｐｐ
に代えたほかは、同例におけると同様の手順で厚さ２０
μの無延伸フィルムを得た。Example 2 In the example described in Example 1, the amount of clay blended and mixed with the raw material polyethylene terephthalate was 11000 pp.
The thickness was 20 mm using the same procedure as in the same example except that
An unstretched film of μ was obtained.
このフィルムについて、欠陥点、水蒸気透過率、酸素透
過率を同例におけると同様に測定した。結果を、ｍ１表
に示す。Regarding this film, defect points, water vapor permeability, and oxygen permeability were measured in the same manner as in the same example. The results are shown in table m1.
実施例３
実施例２に記載の例において、原料ポリエチレンテレフ
タレートに配合、混合したものを、平均粒径１μのクレ
ーに代えたほかは、同例におけると同様の手順で厚さ２
０μの無延伸フィルムを得た。Example 3 In the example described in Example 2, except that clay with an average particle size of 1 μm was used instead of the material blended and mixed with the raw material polyethylene terephthalate, a clay with a thickness of 2 μm was prepared using the same procedure as in the same example.
A non-stretched film of 0μ was obtained.
このフィルムについて、欠陥点、水蒸気透過率、酸素透
過率を同様に測定した。結果を、第１表に示す。Regarding this film, defect points, water vapor permeability, and oxygen permeability were measured in the same manner. The results are shown in Table 1.
実施例４
実施例３に記載の方法で無延伸フィルムを製造し、この
フィルムを１００℃の条件下テンター法で３Ｘ３倍に二
軸に延伸し、１８０″Ｃで１０分間熱固定し、厚さ２０
μの二軸延伸ポリエチレンテレフタレートフィルムを得
た。Example 4 An unstretched film was produced by the method described in Example 3, and this film was biaxially stretched to 3x3 times using a tenter method at 100°C, heat-set at 180″C for 10 minutes, and the thickness 20
A biaxially stretched polyethylene terephthalate film of μ was obtained.
このフィルムについて、欠陥点、水蒸気透過率、酸素透
過率をそれぞれ測定した。結果を、第１表に示す。Regarding this film, defect points, water vapor permeability, and oxygen permeability were measured. The results are shown in Table 1.
実施例５
ポリ−ε−カブロック ム１００重＠部に灯して、平均
粒子径１μのクレーを１１０００ｐｐを秤量し、ブレン
グーで混合したのち、押出機で溶融し、Ｔ−グイからフ
ィルム状に押出し、キャストロールで冷却した。続いて
このフィルムラ、約５５゛Ｃの温度で、ロール式縦延伸
機で縦方向に３倍、約８５℃の温度でテンターによって
横方向に３倍延伸し、１８０℃で１分間熱固定し、厚さ
２０μの二〇１！！延伸ポリーε−カプロラクタムフィ
ルムを得た。 このフィルムについて、欠陥点、水蒸気
透過率、酸素透過率をそれぞれ測定した。結果を、第１
表に示す。Example 5 Weighed 11,000 pp of clay with an average particle size of 1 μm in 100 parts by weight of poly-ε-cablock, mixed it in a blender, melted it in an extruder, and made it into a film from T-guy. It was extruded and cooled with a cast roll. Next, this film was stretched 3 times in the longitudinal direction using a roll-type longitudinal stretching machine at a temperature of about 55°C, and 3 times in the transverse direction using a tenter at a temperature of about 85°C, and heat-set at 180°C for 1 minute. , 201 with a thickness of 20μ! ! A stretched poly ε-caprolactam film was obtained. Regarding this film, defect points, water vapor permeability, and oxygen permeability were measured. The results, first
Shown in the table.
比較例１
実施例１で用いたのと同種のポリエチレンテレ７タレー
）１００ｇ（１都に対して、平均粒子径１μのクレーを
１１０００ｐｐ秤量し、ブレングーで混合したのち、押
出機で溶融し、Ｔ−グイからフィルム状に押出し、厚さ
２０μの無延伸フィルムを得た。Comparative Example 1 100 g (11,000 pp of clay with an average particle size of 1 μm was weighed for 1 piece of polyethylene Tele 7 tarley of the same type as that used in Example 1), mixed in a blender, melted in an extruder, and - It was extruded into a film form from goo to obtain an unstretched film with a thickness of 20 μm.
このフィルムについての諸性質測定結果を、第１表に示
す。Table 1 shows the results of various property measurements regarding this film.
比較例２
比較例１に記載の例において、原料（３４脂に配合、混
合したクレーの量を１００，０００ｐｐｍに代えたほか
は、同例におけると同様の手順で厚さ２０μの無延伸フ
ィルムを得た。Comparative Example 2 In the example described in Comparative Example 1, an unstretched film with a thickness of 20μ was prepared in the same manner as in the same example, except that the amount of clay mixed with the raw material (34 fat was changed to 100,000 ppm). Obtained.
このフィルムについての諸性質測定結果を、第１−＆に
示す。The results of measuring various properties of this film are shown in Section 1-&.
比較例３
実施例５に記載の例において、クレーの量を１００ｙ０
００ｐｐ＋＊に代えたほがは、同例におけると同様の手
順で厚さ２０μの二軸延伸フィルムを得た。Comparative Example 3 In the example described in Example 5, the amount of clay was changed to 100y0
A biaxially stretched film having a thickness of 20 μm was obtained using the same procedure as in the same example except that the film was replaced with 00pp+*.
このフィルムについての諸性質測定結果を、第１表に示
す。Table 1 shows the results of various property measurements regarding this film.
第１表より、次のことが明らかである。From Table 1, the following is clear.
（１）本発明に係るフィルムは、水蒸気透過率が１００
ｇｒ／ｍ” ２４ｈｒｓ・２０μ以下であり、かつ酸素
透過率が１２０ｃｃ／ｍ２・２４ｈｒｓ・２０μと低い
水準にあり、ガスバリヤ性が優れているといえる。(1) The film according to the present invention has a water vapor transmission rate of 100
gr/m" 24hrs/20μ or less, and the oxygen permeability is at a low level of 120cc/m2/24hrs/20μ, so it can be said that the gas barrier property is excellent.
（２）これに対して比較例のフィルムは、水蒸気透過率
か酸素透過率のいずれかが大きいか（比較例１．２）、
双方とも大きく（比較例３）、ガスバリヤ性が優れてい
るとはいえない。(2) On the other hand, the films of Comparative Examples have either higher water vapor permeability or oxygen permeability (Comparative Example 1.2);
Both were large (Comparative Example 3) and cannot be said to have excellent gas barrier properties.
Claims (4)
に分散された無機系の微細粉末に由来する欠陥点の平均
径が４μ以下で、かつ、１平方メートル当りの個数が１
０＾４個以下であることを特徴とする透明ガスバリヤ性
フィルム。(1) In a transparent gas barrier film, the average diameter of defect points originating from fine inorganic powder dispersed in the film is 4μ or less, and the number of defects per square meter is 1
A transparent gas barrier film characterized by having 0^4 or less.
向に３倍以上延伸されてなることを特徴とする、特許請
求の範囲第（１）項記載の透明ガスバリヤ性フィルム。(2) The transparent gas barrier film according to claim (1), wherein the transparent gas barrier film is stretched at least three times in one axis direction.
に分散された無機系の微細粉末に由来する欠陥点の平均
径が４μ以下であり、かつ、１平方メートル当りの個数
が１０＾４個以下である基体フィルムの少なくとも片面
に、他の透明なプラスチックフィルムが積層されてなる
ことを特徴とする透明ガスバリヤ性フィルム。(3) In a transparent gas barrier film, a substrate in which the average diameter of defect points derived from fine inorganic powder dispersed in the film is 4μ or less, and the number of defects per square meter is 10^4 or less A transparent gas barrier film characterized in that another transparent plastic film is laminated on at least one side of the film.
延伸されてなることを特徴とする、特許請求の範囲第（
３）項記載の透明ガスバリヤ性フィルム。(4) The base film is stretched three times or more in at least one axial direction,
3) The transparent gas barrier film described in section 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16523886A JPS6320334A (en) | 1986-07-14 | 1986-07-14 | Transparent, gas-barrier film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16523886A JPS6320334A (en) | 1986-07-14 | 1986-07-14 | Transparent, gas-barrier film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6320334A true JPS6320334A (en) | 1988-01-28 |
Family
ID=15808488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16523886A Pending JPS6320334A (en) | 1986-07-14 | 1986-07-14 | Transparent, gas-barrier film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6320334A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0795574A1 (en) * | 1996-03-13 | 1997-09-17 | Wolff Walsrode Ag | Foil having rough seal layer at one end and composite foils produced thereby |
| JP2001114912A (en) * | 1999-08-09 | 2001-04-24 | Du Pont Kk | Stretched aromatic polyester film and preparation method thereof |
| JP2006104394A (en) * | 2004-10-08 | 2006-04-20 | Asahi Kasei Chemicals Corp | Photocurable prepreg sheet with protective film |
-
1986
- 1986-07-14 JP JP16523886A patent/JPS6320334A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0795574A1 (en) * | 1996-03-13 | 1997-09-17 | Wolff Walsrode Ag | Foil having rough seal layer at one end and composite foils produced thereby |
| JP2001114912A (en) * | 1999-08-09 | 2001-04-24 | Du Pont Kk | Stretched aromatic polyester film and preparation method thereof |
| JP2006104394A (en) * | 2004-10-08 | 2006-04-20 | Asahi Kasei Chemicals Corp | Photocurable prepreg sheet with protective film |
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