JPH05169604A - Laminated polyester film - Google Patents
Laminated polyester filmInfo
- Publication number
- JPH05169604A JPH05169604A JP3343932A JP34393291A JPH05169604A JP H05169604 A JPH05169604 A JP H05169604A JP 3343932 A JP3343932 A JP 3343932A JP 34393291 A JP34393291 A JP 34393291A JP H05169604 A JPH05169604 A JP H05169604A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- layer
- film
- particles
- laminated
- 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
- 229920006267 polyester film Polymers 0.000 title claims abstract description 18
- 229920000728 polyester Polymers 0.000 claims abstract description 64
- 239000002245 particle Substances 0.000 claims abstract description 60
- 239000000654 additive Substances 0.000 claims abstract description 12
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 238000010023 transfer printing Methods 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 47
- 238000000034 method Methods 0.000 description 20
- 238000011156 evaluation Methods 0.000 description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 description 12
- 239000005020 polyethylene terephthalate Substances 0.000 description 12
- 238000012937 correction Methods 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000007334 copolymerization reaction Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 238000001721 transfer moulding Methods 0.000 description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-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
- 241001422033 Thestylus Species 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- AAEHPKIXIIACPQ-UHFFFAOYSA-L calcium;terephthalate Chemical compound [Ca+2].[O-]C(=O)C1=CC=C(C([O-])=O)C=C1 AAEHPKIXIIACPQ-UHFFFAOYSA-L 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- WPUMVKJOWWJPRK-UHFFFAOYSA-N naphthalene-2,7-dicarboxylic acid Chemical compound C1=CC(C(O)=O)=CC2=CC(C(=O)O)=CC=C21 WPUMVKJOWWJPRK-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Credit Cards Or The Like (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、積層ポリエステムフィ
ルムに関するものであり、詳しくは、生産性、厚み均一
性、強度等に優れ、主として、磁気カード、転写印刷、
成形転写印刷用のフィルムとして好適な積層ポリエステ
ルフィルムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated polyester film, and more specifically, it is excellent in productivity, thickness uniformity, strength, etc. and is mainly used for magnetic cards, transfer printing,
The present invention relates to a laminated polyester film suitable as a film for molding transfer printing.
【０００２】[0002]
【従来の技術】一般に、ポリエステルフィルムには、用
途、生産性等の観点から、各種の添加粒子が配合され
る。例えば、磁気カード用ベースフィルムには、カード
への印刷特性（見栄え、発色性等）を向上させるため、
例えば、二酸化チタン顔料等の平均粒径が０．００１〜
１μｍの粒子が１０〜３０重量％配合される。また、転
写印刷や成形転写印刷用ベースフィルムには、表面を艶
消し状態にして高級感を出すため、例えば、平均粒径が
２〜３．５μｍの各種粒子が０．１〜３重量％配合され
る。また、ポリエステルフィルムの生産においては、フ
ィルム表面を粗面化して搬送その他を容易にするため、
比較的大粒径の各種粒子が適当量配合される。2. Description of the Related Art Generally, various additive particles are blended with a polyester film from the viewpoints of use, productivity and the like. For example, in order to improve the printing characteristics (look, color development, etc.) on the card, the base film for magnetic cards is
For example, the average particle size of titanium dioxide pigment is 0.001-
10 to 30% by weight of 1 μm particles are blended. In addition, in order to give a high-quality appearance by matting the surface of the base film for transfer printing or molding transfer printing, for example, 0.1 to 3% by weight of various particles having an average particle diameter of 2 to 3.5 μm is blended. To be done. Also, in the production of polyester film, in order to roughen the film surface and facilitate transportation and the like,
Various particles having a relatively large particle diameter are blended in appropriate amounts.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、添加粒
子は延伸に寄与しないため、添加粒子の含有量が高い場
合や添加粒子の粒径が大きい場合のポリエステルフィル
ムは、十分な延伸倍率を達成することができずに生産性
が悪化し、また、厚み均一性、強度等の物性面でも劣
る。特に、粒径が２μｍ以上の添加粒子を含有するポリ
エステルフィルムにおいては、所謂ボイドの生成量が急
増する問題がある。本発明は、上記実情に鑑みなされた
ものであり、その目的は、上記の欠点を解消し、生産
性、厚み均一性、強度等に優れ、主として、磁気カー
ド、転写印刷、成形転写印刷用のフィルムとして好適な
積層ポリエステルフィルムを提供する点にある。However, since the additive particles do not contribute to the stretching, the polyester film having a high content of the additive particles or a large particle diameter of the additive particles should achieve a sufficient stretching ratio. Productivity cannot be obtained, and physical properties such as thickness uniformity and strength are poor. In particular, in a polyester film containing added particles having a particle size of 2 μm or more, there is a problem that the so-called void generation amount increases rapidly. The present invention has been made in view of the above circumstances, and an object thereof is to solve the above-mentioned drawbacks and to be excellent in productivity, thickness uniformity, strength, etc., and mainly for magnetic cards, transfer printing, molding transfer printing. The point is to provide a laminated polyester film suitable as a film.
【０００４】[0004]
【課題を解決するための手段】すなわち、本発明の要旨
は、ポリエステル（Ａ）層の少なくとも片面にポリエス
テル（Ｂ）層を積層したのち二軸延伸して成る積層ポリ
エステルフィルムであって、ポリエステル（Ａ）層は、
実質的に添加粒子を含有しないポリエステルから成り、
ポリエステル（Ｂ）層は、平均粒径が０．００１〜１μ
ｍの添加粒子および／または平均粒径が２〜３．５μｍ
の添加粒子を含有し、小粒子の含有量が１０〜３０重量
％、大粒子の含有量が０．１〜３重量％であるポリエス
テルから成り、そして、全体に対するポリエステル
（Ａ）層の厚み割合が１０〜９５％であることを特徴と
する積層ポリエステムフィルムに存する。That is, the gist of the present invention is a laminated polyester film obtained by laminating a polyester (B) layer on at least one side of a polyester (A) layer and then biaxially stretching the polyester (A) layer. A) layer is
Consisting essentially of polyester containing no added particles,
The polyester (B) layer has an average particle size of 0.001 to 1 μm.
m added particles and / or average particle diameter of 2 to 3.5 μm
Of the polyester containing 10 to 30% by weight of small particles and 0.1 to 3% by weight of large particles, and the thickness ratio of the polyester (A) layer to the whole. Is 10 to 95%.
【０００５】以下、本発明を詳細に説明する。本発明に
おいて、（Ａ）層および（Ｂ）層を構成するポリエステ
ルとしては、代表的には、ポリエチレンテレフタレート
（ＰＥＴ）やポリエチレン−２，６−ナフタレート（Ｐ
ＥＮ）等が挙げられる。上記のポリエステルについてＰ
ＥＴを例に挙げて説明するが、本発明は、ＰＥＴに限定
されるものではない。The present invention will be described in detail below. In the present invention, as the polyester constituting the layers (A) and (B), polyethylene terephthalate (PET) or polyethylene-2,6-naphthalate (P) is typically used.
EN) and the like. About the above polyester P
Although ET will be described as an example, the present invention is not limited to PET.
【０００６】本発明に使用されるＰＥＴは、テレフタル
酸またはそのアルキルエステルを主たる酸成分とし、エ
チレングリコールを主たるグリコール成分とし、エステ
ル化反応またはエステル交換反応を行なった後、重縮合
反応を行うことにより得られる。The PET used in the present invention comprises terephthalic acid or its alkyl ester as a main acid component, ethylene glycol as a main glycol component, and an esterification reaction or a transesterification reaction followed by a polycondensation reaction. Is obtained by
【０００７】（Ａ）層のポリエステルは、ＰＥＴの結晶
性を低下させない程度において共重合成分を含有しても
よい。共重合成分の割合は、通常１０ｍｏｌ％以下、好
ましくは５ｍｏｌ％以下とされる。一方、（Ｂ）層のポ
リエステルは、任意量の共重合成分を含有してもよい。
転写印刷用途においてフィルムの変形を伴なう場合、即
ち、成形転写印刷用途では、結晶性が余りに高くない方
が好ましい。従って、共重合成分の含有量は、具体的に
は、２０〜４０ｍｏｌ％以下の範囲まで許容される。The polyester of the layer (A) may contain a copolymerization component to the extent that the crystallinity of PET is not deteriorated. The proportion of the copolymerization component is usually 10 mol% or less, preferably 5 mol% or less. On the other hand, the polyester of the layer (B) may contain an arbitrary amount of copolymerization component.
When the film is accompanied by deformation in transfer printing, that is, in molding transfer printing, it is preferable that the crystallinity is not too high. Therefore, the content of the copolymerization component is specifically allowed to be in the range of 20 to 40 mol% or less.
【０００８】上記の共重合成分としては、具体的には、
次の各酸成分および各グリコール成分が挙げられる。す
なわち、酸成分としては、例えば、ナフタレン−２，７
−ジカルボン酸、イソフタル酸、フタル酸、アジピン
酸、セバシン酸、ｐ−ヒドロキシ安息香酸またはこれら
のアルキルエステル等が挙げられ、グリコール成分とし
ては、例えば、トリメチレングリコール、テトラメチレ
ングリコール、ヘキサメチレングリコール、ネオペンチ
ルグリコール、１，４−シクロヘキサンジメタノール等
が挙げられる。As the above-mentioned copolymerization component, specifically,
The following acid components and glycol components are included. That is, as the acid component, for example, naphthalene-2,7
-Dicarboxylic acid, isophthalic acid, phthalic acid, adipic acid, sebacic acid, p-hydroxybenzoic acid or alkyl esters thereof, and the like, and examples of the glycol component include trimethylene glycol, tetramethylene glycol, hexamethylene glycol, Examples include neopentyl glycol and 1,4-cyclohexanedimethanol.
【０００９】また、（Ｂ）層のポリエステルは、他の重
合体、例えば、ポリアミド、ポリオレフィン、ポリカー
ボネート等をブレンドしたものであってもよい。他の重
合体は、（Ｂ）層のポリエステルの結晶性を必要以上に
低下させたり、フィルムとした際にその表面を必要以上
に粗面化させない割合で使用され、通常、その使用割合
は１０重量％以下とされる。The polyester of the layer (B) may be a blend of other polymers such as polyamide, polyolefin and polycarbonate. The other polymer is used in a proportion that does not unnecessarily reduce the crystallinity of the polyester of the layer (B) or roughens the surface of the film when it is formed into a film. It is to be less than or equal to wt%.
【００１０】本発明において、上記（Ａ）層は、実質的
に添加粒子を含有しないポリエステルから成ることが必
要である。これに対し、上記（Ｂ）層は、平均粒径が
０．００１〜１μｍの添加粒子および／または平均粒径
が２〜３．５μｍの添加粒子を含有し、小粒子の含有量
が１０〜３０重量％、大粒子の含有量が０．１〜３重量
％であるポリエステルから成ることが必要である。In the present invention, the layer (A) is required to consist essentially of polyester containing no added particles. On the other hand, the layer (B) contains additive particles having an average particle size of 0.001 to 1 μm and / or additive particles having an average particle size of 2 to 3.5 μm, and the content of small particles is 10 to 10. It must consist of 30% by weight polyester with a content of large particles of 0.1 to 3% by weight.
【００１１】上記（Ｂ）層のポリエステルの添加粒子系
は、ポリエステルフィルムの用途、生産性等の観点から
規定されたものである。例えば、小粒子多量添加系は、
例えば、磁気カード用ベースフィルムにおいて、カード
への印刷特性（見栄え、発色性等）を向上させるために
顔料等を添加する場合に相当する。また、小粒子多量添
加系と大粒子少量添加系との併用系は、上記のベースフ
ィルムにおいて、フィルム表面を粗面化して搬送その他
を容易にするために必要とされる場合に相当する。更に
また、大粒子少量添加系は、転写印刷や成形転写印刷用
ベースフィルムにおいて、表面を艶消し状態にして高級
感を出すために必要とされる場合に相当する。The additive particle system of the polyester of the layer (B) is defined from the viewpoints of the application and productivity of the polyester film. For example, the system for adding small particles in a large amount is
For example, this corresponds to the case where a pigment or the like is added to the base film for a magnetic card in order to improve the printing characteristics (look, color development, etc.) on the card. Further, a combined system of a system containing a large amount of small particles and a system containing a small amount of large particles corresponds to a case where it is necessary to roughen the film surface of the above base film to facilitate transportation and the like. Furthermore, the system in which a large amount of a small amount of particles is added corresponds to the case where it is necessary to give a high-grade feeling by making the surface matte in a base film for transfer printing or molding transfer printing.
【００１２】上記の各添加系は、何れにおいても、十分
な延伸倍率を達成することができずに生産性が悪化し、
また、厚み均一性、強度等の物性面でも劣ると言う共通
の問題を有する。本発明の骨子は、実質的に添加粒子を
含有しないポリエステル（Ａ）層の少なくとも片面にポ
リエステル（Ｂ）層を積層したのち二軸延伸することに
より、ポリエステル（Ｂ）層の有する上記の問題を解決
した点にある。しかも、本発明によれば、添加粒子の含
有量が単層フィルムの場合よりも少なくよいことから、
コスト的にも有利となる。なお、（Ａ）層のポリエステ
ルにおいても、実質的に結晶性、配向性に影響のない程
度である限り、添加粒子の含有は認められる。In each of the above addition systems, a sufficient draw ratio cannot be achieved and productivity is deteriorated.
Further, they have a common problem that they are inferior in terms of physical properties such as thickness uniformity and strength. The skeleton of the present invention has the above-mentioned problems of the polyester (B) layer by laminating the polyester (B) layer on at least one surface of the polyester (A) layer containing substantially no added particles and then biaxially stretching the layer. There is a solution. Moreover, according to the present invention, since the content of the added particles may be smaller than that in the case of the monolayer film,
It is also advantageous in terms of cost. In the polyester of the layer (A), the inclusion of the additive particles is recognized as long as the crystallinity and the orientation are not substantially affected.
【００１３】添加粒子の種類としては、ポリエステルフ
ィルムの用途等に応じて適宜選択されるが、例えば、カ
オリン、クレー、炭酸カルシウム、酸化ケイ素、球状シ
リカ、テレフタル酸カルシウム、酸化アルミニウム、酸
化チタン、リン酸カルシウム、フッ化リチウム、カーボ
ンブラック等の不活性無機微粒子、ポリエステル樹脂の
溶融製膜に際して不溶な高融点有機化合物、架橋ポリマ
ー等が挙げられる。なお、（Ａ）層および（Ｂ）層のポ
リエステルには、本発明の目的を損なわない範囲におい
て、必要に応じ、安定剤、着色剤、酸化防止剤、消泡
剤、静電防止剤等の添加剤を含有させることも出来る。The type of particles to be added is appropriately selected depending on the use of the polyester film, and for example, kaolin, clay, calcium carbonate, silicon oxide, spherical silica, calcium terephthalate, aluminum oxide, titanium oxide, calcium phosphate. Inactive inorganic fine particles such as lithium fluoride and carbon black, high melting point organic compounds insoluble during melt film formation of polyester resin, crosslinked polymers and the like. In addition, in the polyester of the (A) layer and the (B) layer, if necessary, a stabilizer, a colorant, an antioxidant, an antifoaming agent, an antistatic agent, etc. may be added to the polyester as long as the object of the present invention is not impaired. Additives can also be included.
【００１４】そして、本発明の積層フィルムにおいて、
表層を構成するポリエステル（Ｂ）層の表面について、
中心平均粗さ（Ｒａ）が０．７〜３．０、好ましくは
０．１〜２．０、最大高さ（Ｒｔ）が１．０〜４．０、
好ましくは２．０〜３．０の範囲に調整するならば、滑
り性が良好となり、転写印刷時の高級感が得られ、イン
クや磁性塗料の塗布性が良好となる。Then, in the laminated film of the present invention,
Regarding the surface of the polyester (B) layer constituting the surface layer,
Central average roughness (Ra) is 0.7 to 3.0, preferably 0.1 to 2.0, and maximum height (Rt) is 1.0 to 4.0,
If it is adjusted to preferably in the range of 2.0 to 3.0, the slidability becomes good, a high-grade feeling at the time of transfer printing is obtained, and the applicability of ink or magnetic paint becomes good.
【００１５】ポリエステル（Ａ）層と（Ｂ）との積層
は、共押出し法、コート法、ラミ法等の何れによっても
よいが、技術的に容易であり且つ使用時に剥離や反りの
心配の少ない共押出し法が好ましい。また、（Ｂ）層
は、（Ａ）層の片面だけに積層してもよいが、滑り性、
表面性の観点より、（Ａ）層の両面に積層するのが好ま
しい。この場合、表裏両面において、添加粒子の種類、
平均粒径、含有量を変えることも出来る。また、再生ポ
リエステルの有効利用等の目的により、斯かる第３のポ
リエステルの層をポリエステル（Ａ）層と（Ｂ）層との
間に積層することも出来る。The polyester (A) layer and the (B) layer may be laminated by any of a coextrusion method, a coating method and a laminating method, but they are technically easy and there is little fear of peeling or warpage during use. The coextrusion method is preferred. The layer (B) may be laminated on only one side of the layer (A), but the slipperiness,
From the viewpoint of surface property, it is preferable to laminate on both surfaces of the (A) layer. In this case, the type of added particles,
The average particle size and content can be changed. Further, for the purpose of effectively utilizing the recycled polyester, such a third polyester layer can be laminated between the polyester (A) layer and the (B) layer.
【００１６】本発明においては、積層フィルム全体に対
するポリエステル（Ａ）層の厚み割合は、１０〜９５
％、好ましくは３０〜７０％、更に好ましくは３０〜５
０％の範囲であることが必要である。ポリエステル
（Ａ）層の厚み割合が上記範囲より小さい場合は、十分
なフィルム強度が得られなかったり、フィルムの厚み均
一性が損なわれたり、あるいは、生産性が悪化する。ま
た、ポリエステル（Ａ）層の厚み割合が上記範囲より大
きい場合は、十分な滑り性が得られない。In the present invention, the thickness ratio of the polyester (A) layer to the whole laminated film is 10 to 95.
%, Preferably 30 to 70%, more preferably 30 to 5
It is necessary to be in the range of 0%. When the thickness ratio of the polyester (A) layer is smaller than the above range, sufficient film strength cannot be obtained, the thickness uniformity of the film is impaired, or the productivity is deteriorated. Further, when the thickness ratio of the polyester (A) layer is larger than the above range, sufficient slipperiness cannot be obtained.
【００１７】また、積層フィルム全体の厚みとしては、
特に制限はないが、通常３０〜３００μｍ、好ましくは
１００〜２００μｍの範囲から選択される。そして、積
層フィルムの強度としては、縦および横方向のヤング率
が共に５００ｋｇ／ｍｍ2 以上、好ましくは６００ｋｇ
／ｍｍ2 、更に好ましくは８００ｋｇ／ｍｍ2 とされ
る。The total thickness of the laminated film is
Although not particularly limited, it is usually selected from the range of 30 to 300 μm, preferably 100 to 200 μm. The strength of the laminated film has a Young's modulus in the longitudinal and transverse directions of 500 kg / mm 2 or more, preferably 600 kg.
/ Mm 2 , more preferably 800 kg / mm 2 .
【００１８】本発明の積層フィルムは、例えば、次の共
押出法を採用した製膜法に従って有利に製造することが
出来る。先ず、通常のホッパドライヤー、パドルドライ
ヤー、真空乾燥機等により、各原料ポリエステルを乾燥
した後、別々の押出機を用いて２００〜３２０℃の温度
で溶融させ、その後、各ポリエステルをパイプ内または
口金内で合流させた後に押出して急冷し、未延伸積層シ
ートを得る。押出は、Ｔダイ法、チューブラ法等の何れ
の方法によってもよい。Ｔダイ法の場合、急冷時にいわ
ゆる静電密着法を適用することにより、均一厚みの未延
伸積層シートを得ることが出来る。The laminated film of the present invention can be advantageously produced, for example, according to a film forming method employing the following coextrusion method. First, each raw material polyester is dried by a normal hopper dryer, paddle dryer, vacuum dryer, etc., and then melted at a temperature of 200 to 320 ° C. using a separate extruder, and then each polyester is piped or in a die. After being merged inside, it is extruded and rapidly cooled to obtain an unstretched laminated sheet. The extrusion may be performed by any method such as T-die method and tubular method. In the case of the T-die method, an unstretched laminated sheet having a uniform thickness can be obtained by applying a so-called electrostatic contact method during quenching.
【００１９】次に、延伸工程において、適切な温度範囲
で面積倍率にして１．１〜５０倍、好ましくは６〜３０
倍の範囲で長手方向および幅方向に未延伸積層シートを
延伸し積層フィルムとなす。二軸延伸は、逐次二軸延
伸、同時二軸延伸、それらを組合せた延伸の何れであっ
てもよい。そして、逐次二軸延伸の場合は、一般には、
縦方向に延伸したのち横方向に延伸する方法が好ましく
採用される。また、二軸延伸後、次工程の熱処理工程に
供する前に、長手方向および／または幅方向に再延伸を
行なってもよい。また、上記の延伸工程あるいはその前
後においてシート又はフィルムの片面または両面に各種
の塗布処理を施し、磁性体の接着性や帯電防止性等を向
上させることも可能である。延伸されたフィルムは、必
要に応じ、熱固定ゾーンにて、１００〜２６０℃で１秒
〜１０分間熱処理される。得られた積層フィルムは、巻
取られて製品とされる。Next, in the stretching step, the area ratio is 1.1 to 50 times, preferably 6 to 30 in an appropriate temperature range.
The unstretched laminated sheet is stretched in the longitudinal direction and the width direction in the range of double to form a laminated film. The biaxial stretching may be sequential biaxial stretching, simultaneous biaxial stretching, or a combination of these. And in the case of sequential biaxial stretching, in general,
A method of stretching in the machine direction and then in the transverse direction is preferably adopted. Further, after biaxial stretching, it may be re-stretched in the longitudinal direction and / or the width direction before being subjected to the subsequent heat treatment step. It is also possible to improve the adhesiveness and antistatic property of the magnetic material by subjecting one or both surfaces of the sheet or film to various coating treatments before or after the stretching step. The stretched film is heat-treated at 100 to 260 ° C. for 1 second to 10 minutes in the heat setting zone, if necessary. The obtained laminated film is wound into a product.
【００２０】[0020]
【実施例】以下、本発明を実施例により更に詳細に説明
するが、本発明は、その要旨を超えない限り、以下の実
施例に限定されるものではない。なお、積層フィルムの
評価方法は、以下に示す通りである。EXAMPLES The present invention will be described in more detail with reference to examples below, but the present invention is not limited to the following examples unless it exceeds the gist thereof. The evaluation method of the laminated film is as follows.
【００２１】（１）中心線平均粗さ（Ｒａ） （株）小坂研究所製の表面粗さ測定機（ＳＥ−３Ｆ）を
用いて次のようにして求めた。すなわち、フィルム断面
曲線からその中心線の方向に基準長さＬ（２．５ｍｍ）
の部分を抜き取り、この抜き取り部分の中心線をｘ軸、
縦倍率の方向をｙ軸として粗さ曲線ｙ＝ｆ（ｘ）で表わ
したとき、次の数式［数１］で与えられた値を〔μｍ〕
で表わす。中心線平均粗さ（Ｒａ）は、試料フィルム表
面から１０本の断面曲線を求め、これらの断面曲線から
求めた抜き取り部分の中心線平均粗さの平均値で表わし
た。なお、触針の先端半径は２μｍ、荷重は３０ｍｇと
し、カットオフ値は０．０８ｍｍとした。(1) Center line average roughness (Ra) The average roughness was measured as follows using a surface roughness measuring device (SE-3F) manufactured by Kosaka Laboratory Ltd. That is, the reference length L (2.5 mm) from the film section curve in the direction of the center line
Extract the part of, and the center line of this extracted part is the x-axis,
When the roughness curve y = f (x) is represented with the direction of longitudinal magnification as the y-axis, the value given by the following formula [Equation 1] is [μm].
Express with. The center line average roughness (Ra) was represented by the average value of the center line average roughness of the extracted portion obtained from these 10 section curves obtained from the surface of the sample film. The tip radius of the stylus was 2 μm, the load was 30 mg, and the cutoff value was 0.08 mm.
【００２２】[0022]
【数１】 [Equation 1]
【００２３】（２）最大高さ（Ｒｔ） （株）小坂研究所製の表面粗さ測定機（ＳＥ−３Ｆ）に
よって得られた断面曲線から、基準長さ（２．５ｍｍ）
だけ抜き取り、この抜き取り部分の平均線に平行な２直
線で抜き取り部分を挟んだとき、この２直線の間隔を断
面曲線の縦倍率の方向に測定してその値をマイクロメー
トル（μｍ）単位で表わしたものを抜き取り部分の最大
高さとする。最大高さ（Ｒｔ）は、試料フィルム表面か
ら１０本の断面曲線を求め、これらの断面曲線から求め
た抜き取り部分の最大高さの平均値で表わした。なお、
触針の先端半径は２μｍ、荷重は３０ｍｇとし、カット
オフ値は０．０８ｍｍとした。(2) Maximum height (Rt) From the sectional curve obtained by the surface roughness measuring machine (SE-3F) manufactured by Kosaka Laboratory Ltd., the reference length (2.5 mm)
When the extracted portion is sandwiched by two straight lines parallel to the average line of this extracted portion, the distance between these two straight lines is measured in the direction of the longitudinal magnification of the sectional curve and the value is expressed in units of micrometers (μm). Set the maximum height of the removed part. The maximum height (Rt) was represented by an average value of the maximum heights of the extracted portions obtained from 10 cross-section curves obtained from the surface of the sample film. In addition,
The tip radius of the stylus was 2 μm, the load was 30 mg, and the cutoff value was 0.08 mm.
【００２４】（３）引張試験 （株）インテスコ製引張試験機インテスコモデル２００
１型を用いて、温度２３℃、湿度５０％ＲＨに調節され
た室内において、長さ５０ｍｍ、幅１５ｍｍの試料フィ
ルムを２００ｍｍ／ｍｉｎの速度で引張り、引張応力−
ひずみ曲線より、引張破壊強度を求める。引張破壊強度
は次の式によって計算する。 σ＝Ｆ／Ａ σ：引張破壊強度（ｋｇ／ｍｍ2 ） Ｆ：破壊時に於ける荷重（ｋｇ） Ａ：試験片の元の断面積（ｍｍ2 ）(3) Tensile test Intesco Model 200 tensile tester manufactured by Intesco Co., Ltd.
Using a type 1 sample, a sample film having a length of 50 mm and a width of 15 mm was pulled at a speed of 200 mm / min in a room adjusted to a temperature of 23 ° C. and a humidity of 50% RH to obtain a tensile stress-
Determine the tensile fracture strength from the strain curve. The tensile breaking strength is calculated by the following formula. σ = F / A σ: Tensile fracture strength (kg / mm 2 ) F: Load at fracture (kg) A: Original cross-sectional area of the test piece (mm 2 )
【００２５】（４）厚み均一性の評価 （Ａ）フィルムの厚さ斑 安立電気社製連続フィルム厚さ測定器（電子マイクロメ
ーター使用）により、試料フィルムの縦方向および横方
向の長さ１ｍについて厚さを測定し、以下の数式［数
２］より、厚さ斑を算出し、下記の３段階にて評価を行
なった。 ○：厚さ斑３％以下 △：厚さ斑７％以下 ×：厚さ斑８％以上(4) Evaluation of Thickness Uniformity (A) Thickness Unevenness of Film Using a continuous film thickness measuring instrument (using an electronic micrometer) manufactured by Anritsu Electric Co., for a length of 1 m in the machine and transverse directions The thickness was measured, the thickness unevenness was calculated from the following mathematical formula [Equation 2], and the evaluation was performed according to the following three stages. ◯: Thickness unevenness 3% or less Δ: Thickness unevenness 7% or less ×: Thickness unevenness 8% or more
【００２６】[0026]
【数２】 [Equation 2]
【００２７】（Ｂ）実用評価 試料フィルムを実際に磁気カード用または転写印刷用と
して使用し、使用上の問題、外観や機能等の問題につい
て評価した。評価は３段階とし、以下の様に分類した。 ○：使用上問題がなく、また、外観や機能等にも問題な
い。 △：使用上または外観や機能等にやや問題がある。 ×：使用上または外観や機能等に問題があり、実用的で
ない。(B) Practical Evaluation The sample film was actually used for magnetic cards or transfer printing, and problems in use, problems such as appearance and function were evaluated. The evaluation was made into 3 stages and classified as follows. ◯: There is no problem in use, and there is no problem in appearance or function. Δ: There is a slight problem in use, appearance or function. X: There is a problem in use, appearance, function, etc. and it is not practical.
【００２８】（５）総合評価 物性測定結果、生産性、実用性を総合的に判断して、下
記の３段階にて総合評価を行なった。 ○：非常に良好 △：やや問題がある ×：非常に問題がある(5) Comprehensive Evaluation The comprehensive evaluation was carried out in the following three stages by comprehensively judging the results of measurement of physical properties, productivity and practicality. ◯: Very good Δ: Slightly problematic ×: Very problematic
【００２９】実施例１ ポリエステル（Ａ）として、全く添加粒子を含有しない
ＰＥＴ（ポリエステルI ）を用い、ポリエステル（Ｂ）
として、平均粒径０．３μｍの二酸化チタン１４重量％
と平均粒径２．６μｍの無定形シリカ１．１重量％を含
有したＰＥＴ（ポリエステルII) を用いた。上記ポリエ
ステル（Ａ）及び（Ｂ）をそれぞれ常法により乾燥後、
別々の押出機にて２９０℃で溶融してパイプ内で合流し
た後、押出し、急冷して未延伸積層シートを得た。Example 1 PET (polyester I) containing no added particles was used as polyester (A), and polyester (B) was used.
As 14% by weight of titanium dioxide having an average particle size of 0.3 μm
And PET (polyester II) containing 1.1% by weight of amorphous silica having an average particle diameter of 2.6 μm was used. After drying the polyesters (A) and (B) by a conventional method,
After melted at 290 ° C. in separate extruders and joined in a pipe, they were extruded and rapidly cooled to obtain an unstretched laminated sheet.
【００３０】上記の未延伸積層シートを逐次二軸延伸し
た後、２３０℃にて１０秒間熱処理を行ない、１８０℃
の冷却ゾーンで幅方向に３％の弛緩を行ない、磁気カー
ド用の積層フィルムを得た。得られたフィルムの層構成
は、（Ｂ）／（Ａ）／（Ｂ）＝５０μｍ／５０μｍ／５
０μｍであった。評価結果を表１に示す。また、二軸延
伸は、面積倍率１５倍において良好であった。The above unstretched laminated sheet is biaxially stretched successively and then heat-treated at 230 ° C. for 10 seconds to obtain 180 ° C.
3% was relaxed in the width direction in the cooling zone to obtain a laminated film for a magnetic card. The layer structure of the obtained film was (B) / (A) / (B) = 50 μm / 50 μm / 5.
It was 0 μm. The evaluation results are shown in Table 1. The biaxial stretching was good at an area magnification of 15 times.
【００３１】実施例２ 実施例１において、ポリエステル（Ｂ）として、ジカル
ボン酸成分がテレフタル酸単位９４ｍｏｌ％及びイソフ
タル酸単位６モル％から成り、平均粒径２．７μｍの無
定形シリカ２．１重量％を含有したポリエステル（III
）を使用した他は、実施例１と同様にして、積層、延
伸、弛緩を行い、転写印刷用積層フィルムを得た。得ら
れたフィルムの層構成は、（Ｂ）／（Ａ）／（Ｂ）＝４
０μｍ／２０μｍ／２０μｍであった。評価結果を表１
に示す。また、二軸延伸は、面積倍率１４倍において良
好であった。Example 2 In Example 1, as polyester (B), 2.1 parts by weight of amorphous silica having a dicarboxylic acid component of 94 mol% terephthalic acid unit and 6 mol% isophthalic acid unit and an average particle size of 2.7 μm. % Polyester (III
In the same manner as in Example 1 except that (1) was used, lamination, stretching and relaxation were performed to obtain a laminated film for transfer printing. The layer structure of the obtained film was (B) / (A) / (B) = 4.
It was 0 μm / 20 μm / 20 μm. Table 1 shows the evaluation results
Shown in. The biaxial stretching was good at an area magnification of 14 times.
【００３２】比較例１ 実施例１において、層構成を（Ｂ）／（Ａ）／（Ｂ）＝
７５μｍ／５μｍ／７０μｍに変更した他は、実施例１
と同様にして磁気カード用積層フィルムを得た。評価結
果を表１に示す。また、二軸延伸は、面積倍率１０倍に
おいて良好であったが、１４〜１５倍では延伸不可であ
った。Comparative Example 1 In Example 1, the layer structure was (B) / (A) / (B) =
Example 1 except that the thickness was changed to 75 μm / 5 μm / 70 μm.
A laminated film for a magnetic card was obtained in the same manner as in. The evaluation results are shown in Table 1. The biaxial stretching was good at an area magnification of 10 times, but not at 14 to 15 times.
【００３３】比較例２ 実施例１において、ポリエステル（Ｂ）として、平均粒
径０．３μｍの二酸化チタン５．０重量％、平均粒径
２．６μｍの無定形シリカ０．０１重量％を含有したＰ
ＥＴ（ポリエステル（IV））を使用した他は、実施例１
と同様にしての磁気カード用積層フィルムを得た。評価
結果を表１に示す。また、二軸延伸は、面積倍率１５倍
において良好であった。Comparative Example 2 In Example 1, as polyester (B), 5.0% by weight of titanium dioxide having an average particle size of 0.3 μm and 0.01% by weight of amorphous silica having an average particle size of 2.6 μm were contained. P
Example 1 except that ET (polyester (IV)) was used
A laminated film for a magnetic card was obtained in the same manner as. The evaluation results are shown in Table 1. The biaxial stretching was good at an area magnification of 15 times.
【００３４】比較例３ 実施例１において、層構成を（Ｂ）／（Ａ）／（Ｂ）＝
３μｍ／１４４μｍ／３μｍとした他は、実施例１と同
様にして磁気カード用積層フィルムを得た。評価結果を
表１に示す。また、二軸延伸は、面積倍率１５倍におい
て良好であった。COMPARATIVE EXAMPLE 3 In Example 1, the layer constitution is (B) / (A) / (B) =
A laminated film for a magnetic card was obtained in the same manner as in Example 1 except that the thickness was 3 μm / 144 μm / 3 μm. The evaluation results are shown in Table 1. The biaxial stretching was good at an area magnification of 15 times.
【００３５】[0035]
【表１】 実施例１ 実施例２ 比較例１ 比較例２ 比較例３ ──────────────────────────────────── ＜層構成＞ (B)/(A)/(B) 50/50/50 40/20/20 75/5/70 50/50/50 3/144/3 ＜（Ａ）層＞ 100%PET 100%PET 100%PET 100%PET 100%PET ＜（Ｂ）層＞*1 II III II IV II ＜延伸面積倍率＞×１５ ×１４ ×１０ ×１５ ×１５ ＜表面粗度＞ Ｒａ（μｍ） 0.17 0.35 0.15 0.05 0.11 Ｒｔ（μｍ） 2.7 3.6 2.6 1.3 2.2 ＜破断強度＞ 19 20 15 21 22 ＜厚み均一性＞ ○ ○ × ○ ○ ＜実用評価＞ ○ ○ △〜× × × ＜総合評価＞ ○ ○ △〜× × △〜× ──────────────────────────────────── （＊１）：（Ｂ）層のポリエステルの内容は、本文中に記載した通りである。Table 1 Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 ──────────────────────────────── ───── <Layer composition> (B) / (A) / (B) 50/50/50 40/20/20 75/5/70 50/50/50 3/144/3 <(A) layer > 100% PET 100% PET 100% PET 100% PET 100% PET <(B) layer> * 1 II III II IV II <Stretching area magnification> × 15 × 14 × 10 × 15 × 15 <Surface roughness> Ra (Μm) 0.17 0.35 0.15 0.05 0.11 Rt (μm) 2.7 3.6 2.6 1.3 2.2 <Break strength> 19 20 15 21 22 <Thickness uniformity> ○ ○ × ○ ○ <Practical evaluation> ○ ○ △ ~ × × × <Comprehensive evaluation ＞ ○○ △ 〜 ×× △ 〜 × ──────────────────────────────────── (* 1) : The content of the polyester of the layer (B) is as described in the text.
【００３６】表１から次のことが明らかである。すなわ
ち、比較例１の積層フィルムは、厚み構成が本発明の規
定範囲外であるために、高い延伸倍率を採ることができ
ずに生産性が悪く、また、厚み斑や強度に問題がある。
比較例２の積層フィルムは、製膜上および物性上は問題
ないものの、添加粒子の含有量が本発明の規定範囲外で
あるために、磁気カード用積層フィルムとして実用上の
性能が十分得られない。比較例３の積層フィルムは、厚
み構成が本発明の規定範囲外であるために、磁気カード
用積層フィルムとして、滑り性が十分でなく、実用上、
問題がある。これに対し、実施例１及び２の積層フィル
ムは、製膜上および物性上も問題がなく、磁気カード
用、転写印刷用の積層フィルムとして好適な性能を有し
ている。The following are clear from Table 1. That is, since the laminated film of Comparative Example 1 has a thickness constitution outside the prescribed range of the present invention, a high draw ratio cannot be obtained, productivity is poor, and there are problems in thickness unevenness and strength.
The laminated film of Comparative Example 2 has no problem in film formation and physical properties, but since the content of the added particles is out of the specified range of the present invention, sufficient practical performance as a laminated film for a magnetic card can be obtained. Absent. Since the laminated film of Comparative Example 3 has a thickness constitution outside the specified range of the present invention, it is not sufficiently slippery as a laminated film for a magnetic card and is practically used.
There's a problem. On the other hand, the laminated films of Examples 1 and 2 have no problem in film formation and physical properties, and have suitable performance as a laminated film for magnetic cards and transfer printing.
【００３７】[0037]
【発明の効果】以上説明した本発明によれば、磁気カー
ド、転写印刷、成形転写印刷用のフィルムとして好適な
積層ポリエステルフィルムが提供され、従って、本発明
の工業的価値は高い。According to the present invention described above, a laminated polyester film suitable as a film for magnetic cards, transfer printing and molding transfer printing is provided, and therefore the industrial value of the present invention is high.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年１２月４日[Submission date] December 4, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の名称[Name of item to be amended] Title of invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【発明の名称】 積層ポリエステルフィルムTitle of invention Laminated polyester film
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００１[Correction target item name] 0001
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００１】[0001]
【産業上の利用分野】本発明は、積層ポリエステルフィ
ルムに関するものであり、詳しくは、生産性、厚み均一
性、強度等に優れ、主として、磁気カード、転写印刷、
成形転写印刷用のフィルムとして好適な積層ポリエステ
ルフィルムに関するものである。BACKGROUND OF THE INVENTION This invention relates to laminated polyester Le Fi <br/> Lum, particularly, excellent productivity, uniform thickness, the strength and the like, mainly, a magnetic card, transfer printing,
The present invention relates to a laminated polyester film suitable as a film for molding transfer printing.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００４】[0004]
【課題を解決するための手段】すなわち、本発明の要旨
は、ポリエステル（Ａ）層の少なくとも片面にポリエス
テル（Ｂ）層を積層したのち二軸延伸して成る積層ポリ
エステルフィルムであって、ポリエステル（Ａ）層は、
実質的に添加粒子を含有しないポリエステルから成り、
ポリエステル（Ｂ）層は、平均粒径が０．００１〜１μ
ｍの添加粒子および／または平均粒径が２〜３．５μｍ
の添加粒子を含有し、小粒子の含有量が１０〜３０重量
％、大粒子の含有量が０．１〜３重量％であるポリエス
テルから成り、そして、全体に対するポリエステル
（Ａ）層の厚み割合が１０〜９５％であることを特徴と
する積層ポリエステルフィルムに存する。That is, the gist of the present invention is a laminated polyester film obtained by laminating a polyester (B) layer on at least one side of a polyester (A) layer and then biaxially stretching the polyester (A) layer. A) layer is
Consisting essentially of polyester containing no added particles,
The polyester (B) layer has an average particle size of 0.001 to 1 μm.
m added particles and / or average particle diameter of 2 to 3.5 μm
Of the polyester containing 10 to 30% by weight of small particles and 0.1 to 3% by weight of large particles, and the thickness ratio of the polyester (A) layer to the whole. There exists in the laminated polyester Le film, characterized in that 10 to 95%.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ１１Ｂ 5/80 7303−5Ｄ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location G11B 5/80 7303-5D
Claims (1)
にポリエステル（Ｂ）層を積層したのち二軸延伸して成
る積層ポリエステルフィルムであって、ポリエステル
（Ａ）層は、実質的に添加粒子を含有しないポリエステ
ルから成り、ポリエステル（Ｂ）層は、平均粒径が０．
００１〜１μｍの添加粒子および／または平均粒径が２
〜３．５μｍの添加粒子を含有し、小粒子の含有量が１
０〜３０重量％、大粒子の含有量が０．１〜３重量％で
あるポリエステルから成り、そして、全体に対するポリ
エステル（Ａ）層の厚み割合が１０〜９５％であること
を特徴とする積層ポリエステムフィルム。1. A laminated polyester film obtained by laminating a polyester (B) layer on at least one side of a polyester (A) layer and then biaxially stretching the polyester (A) layer substantially containing additive particles. The polyester (B) layer has a mean particle size of 0.
001 to 1 μm and / or average particle size of 2
˜3.5 μm added particles, small particle content is 1
Laminate comprising 0 to 30% by weight and a polyester having a large particle content of 0.1 to 3% by weight, and a thickness ratio of the polyester (A) layer to the total is 10 to 95%. Polyestem film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3343932A JPH05169604A (en) | 1991-12-02 | 1991-12-02 | Laminated polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3343932A JPH05169604A (en) | 1991-12-02 | 1991-12-02 | Laminated polyester film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05169604A true JPH05169604A (en) | 1993-07-09 |
Family
ID=18365365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3343932A Pending JPH05169604A (en) | 1991-12-02 | 1991-12-02 | Laminated polyester film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05169604A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100749702B1 (en) * | 2000-03-27 | 2007-08-16 | 후지필름 가부시키가이샤 | Laminated Polyester Film |
| JP2009234275A (en) * | 1996-04-10 | 2009-10-15 | Dupont Teijin Films Us Lp | Multilayer card |
| US7785680B2 (en) | 1996-04-10 | 2010-08-31 | Dupont Teijin Films U.S. Limited Partnership | Multilayer card |
-
1991
- 1991-12-02 JP JP3343932A patent/JPH05169604A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009234275A (en) * | 1996-04-10 | 2009-10-15 | Dupont Teijin Films Us Lp | Multilayer card |
| US7785680B2 (en) | 1996-04-10 | 2010-08-31 | Dupont Teijin Films U.S. Limited Partnership | Multilayer card |
| KR100749702B1 (en) * | 2000-03-27 | 2007-08-16 | 후지필름 가부시키가이샤 | Laminated Polyester Film |
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| A02 | Decision of refusal |
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