JPS6153222B2 - - Google Patents
Info
- Publication number
- JPS6153222B2 JPS6153222B2 JP2739182A JP2739182A JPS6153222B2 JP S6153222 B2 JPS6153222 B2 JP S6153222B2 JP 2739182 A JP2739182 A JP 2739182A JP 2739182 A JP2739182 A JP 2739182A JP S6153222 B2 JPS6153222 B2 JP S6153222B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- laminated film
- ethylene polymer
- density ethylene
- density
- 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.)
- Expired
Links
- 229920000573 polyethylene Polymers 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000004604 Blowing Agent Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 description 12
- 239000004088 foaming agent Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- UOYIYWCAYFTQLH-UHFFFAOYSA-N 3,7-dinitro-1,3,5,7-tetrazabicyclo[3.3.1]nonane Chemical compound C1N2CN([N+](=O)[O-])CN1CN([N+]([O-])=O)C2 UOYIYWCAYFTQLH-UHFFFAOYSA-N 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000002666 chemical blowing agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000642 polymer Polymers 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
- 235000009566 rice Nutrition 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
本発明は積層フイルムおよびその製造法に関
し、詳しくは真珠光沢発泡層を有する外観美麗な
積層フイルムおよびその効率のよい製造法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated film and a method for producing the same, and more particularly to a laminated film with a beautiful appearance having a pearlescent foam layer and an efficient method for producing the same.
一般に米麦等の穀物や肥料、飼料などを収納し
た重量袋を積み重ねる場合、荷崩れ防止を図るた
めに外表面の静摩擦係数の大きいフイルムからな
る各種の袋が開発されている。この場合、袋の外
層としては様々な熱可塑性発泡材料が用いられて
いる。例えば、特公昭46−14550号公報には内層
に低密度ポリエチレンを用い、外層に高密度ポリ
エチレンに発泡剤を配合したものを用い、この両
層をダイ外で合着させると共に外層中の発泡剤を
割裂させて繊維状網目状物質として積層すること
が開示されている。また、特公昭52−24467号公
報には、500ミクロン以下の非発泡層からなる支
持層と25ミクロン以下の発泡層からなるもので、
この発泡層はその表面が網状であつて不規則な噴
火口状の開口を通して支持層が露出している積層
フイルムが開示されている。 In general, when stacking heavy bags containing grains such as rice and wheat, fertilizers, feed, etc., various bags made of a film with a high coefficient of static friction on the outer surface have been developed in order to prevent the loads from collapsing. In this case, various thermoplastic foam materials are used as the outer layer of the bag. For example, in Japanese Patent Publication No. 46-14550, the inner layer is made of low-density polyethylene, and the outer layer is made of high-density polyethylene mixed with a foaming agent. Both layers are bonded together outside the die, and the foaming agent is added to the outer layer. It is disclosed that the fibers are split and laminated as a fibrous network material. In addition, Japanese Patent Publication No. 52-24467 describes a support layer consisting of a non-foamed layer of 500 microns or less and a foam layer of 25 microns or less,
This foam layer is a laminated film whose surface is reticulated and whose support layer is exposed through irregular crater-like openings.
しかしながら、これらの積層フイルムは支持層
として低密度ポリエチレンを用いているため、フ
イルムとしての機械的強度が充分でなく、また表
面は非平滑性であつて、非滑性が要求される袋の
分野では有用であるものの、その外観は均一でな
い。従つて、印刷性等が充分でないことと共に、
外観の美麗さが要求されるフアツシヨンバツグ、
カードケース、カバーなどに使用できないという
欠点があつた。 However, since these laminated films use low-density polyethylene as a support layer, they do not have sufficient mechanical strength as a film, and their surfaces are non-smooth, making them suitable for the field of bags that require non-slip properties. Although useful, its appearance is not uniform. Therefore, in addition to insufficient printability,
Fashionable clothing that requires a beautiful appearance,
The drawback was that it could not be used for card cases, covers, etc.
本発明は、これら従来技術の欠点を解消したす
ぐれた積層フイルムならびにその好適な製造方法
を提供することを目的とするものである。すなわ
ち本発明は、高密度エチレン系重合体からなる非
発泡層と低密度エチレン系重合体からなる発泡層
を有する積層フイルムを提供すると同時に、高密
度エチレン系重合体からなる非発泡層を内層と
し、発泡剤を含有する低密度エチレン系重合体か
らなる発泡層を外層としてダイ内接着共押出し、
ブロー比1.5〜６にてインフレーシヨン成形する
ことを特徴とする積層フイルムの製造方法を提供
するものである。 An object of the present invention is to provide an excellent laminated film that eliminates the drawbacks of these conventional techniques, and a suitable method for manufacturing the same. That is, the present invention provides a laminated film having a non-foamed layer made of a high-density ethylene polymer and a foamed layer made of a low-density ethylene-based polymer. , in-die adhesive coextrusion with a foam layer made of a low-density ethylene polymer containing a foaming agent as an outer layer;
The present invention provides a method for producing a laminated film characterized by inflation molding at a blow ratio of 1.5 to 6.
本発明の積層フイルムは上述の如く基本的には
非発泡層と発泡層の二層よりなるものである。こ
こで、非発泡層を構成する高密度エチレン系重合
体としては、一般フイルム成形用のものが使用で
き、特に制限はないが、通常は密度0.940〜0.970
ｇ／cm3、好ましくは0.945〜0.960ｇ／cm3、メルト
インデツクス（MI）0.01〜2.0ｇ／10分、好まし
くは0.02〜1.0ｇ／10分のものが用いられる。ま
たこの高密度エチレン系重合体は、一般には中、
低圧法高密度ポリエチレンなどのエチレンの単独
重合体、少量のプロピレン、ブテン−１などのα
−オレフインとの共重合体、あるいはこれらの混
合物である。さらにエチレン−プロピレンゴム、
エチレン−プロピレン−ジエンゴム、スチレン−
ブタジエンゴム等を必要に応じて加えることもで
きる。この際のゴムの配合量は、非発泡層全体の
0.5〜40重量％、好ましくは0.5〜10重量％とす
る。 As mentioned above, the laminated film of the present invention basically consists of two layers: a non-foamed layer and a foamed layer. Here, as the high-density ethylene polymer constituting the non-foamed layer, one for general film molding can be used, and there is no particular restriction, but it usually has a density of 0.940 to 0.970.
g/cm 3 , preferably 0.945 to 0.960 g/cm 3 , and a melt index (MI) of 0.01 to 2.0 g/10 min, preferably 0.02 to 1.0 g/10 min. In addition, this high-density ethylene polymer is generally
α of ethylene homopolymers such as low-pressure high-density polyethylene, small amounts of propylene, butene-1, etc.
- A copolymer with olefin, or a mixture thereof. Furthermore, ethylene-propylene rubber,
Ethylene-propylene-diene rubber, styrene-
Butadiene rubber or the like can also be added if necessary. The amount of rubber compounded at this time is
The amount is 0.5 to 40% by weight, preferably 0.5 to 10% by weight.
次に、本発明の積層フイルムの発泡層を構成す
る低密度エチレン系重合体としては、密度0.910
〜0.940ｇ／cm3、好ましくは0.915〜0.930ｇ／cm3、
メトルインデツクス（MI）0.2〜30ｇ／10分、好
ましくは0.5〜10ｇ／10分の物性を有するもので
あり、高圧法低密度ポリエチレンなどのエチレン
の単独重合体、あるいはエチレン−酢酸ビニル共
重合体などのエチレン−不飽和エステル共重合
体、さらには直鎖状のエチレン−α−オレフイン
共重合体などが単独であるいは組合せて用いられ
る。 Next, the low density ethylene polymer constituting the foam layer of the laminated film of the present invention has a density of 0.910.
~0.940g/ cm3 , preferably 0.915~0.930g/ cm3 ,
It has physical properties of methane index (MI) of 0.2 to 30 g/10 min, preferably 0.5 to 10 g/10 min, and is an ethylene homopolymer such as high-pressure low density polyethylene, or an ethylene-vinyl acetate copolymer. Ethylene-unsaturated ester copolymers such as ethylene-unsaturated ester copolymers, linear ethylene-α-olefin copolymers, etc. are used alone or in combination.
上記発泡層は、低密度エチレン系重合体に発泡
剤を加えて発泡させ成形したものであるが、ここ
で使用できる発泡剤としては、その発泡機構から
化学発泡剤と物理発泡剤に大別することができ
る。このうち化学発泡剤としては、アゾジカルボ
ンアミド、ジニトロペンタメチレンテトラミン、
アゾジイソブチロニトリルなどがあげられ、また
物理発泡剤としては、ブタン、ヘプタン、ヘキサ
ン、ジクロルジフルオロメタンなどがあげられ
る。 The above-mentioned foam layer is formed by adding a foaming agent to a low-density ethylene polymer and foaming it, but the foaming agents that can be used here can be broadly classified into chemical foaming agents and physical foaming agents based on their foaming mechanism. be able to. Among these, chemical blowing agents include azodicarbonamide, dinitropentamethylenetetramine,
Examples include azodiisobutyronitrile, and physical blowing agents include butane, heptane, hexane, dichlorodifluoromethane, and the like.
本発明の積層フイルムにおける発泡層では低密
度エチレン系重合体と発泡剤の配合比は、特に制
限はなく発泡剤の種類等により異なるが、要する
に発泡倍率が1.1〜5.0、好ましくは1.2〜4.0にな
るように定めればよい。 In the foam layer of the laminated film of the present invention, the blending ratio of the low density ethylene polymer and the foaming agent is not particularly limited and varies depending on the type of foaming agent, etc., but in short, the foaming ratio is 1.1 to 5.0, preferably 1.2 to 4.0. All you have to do is set it so that
本発明の積層フイルムにおける非発泡層と発泡
層は、上述の如き構成成分よりなるが、さらに各
層に必要に応じて酸化防止剤、帯電防止剤、着色
剤等を適宜加えることもできる。 The non-foamed layer and the foamed layer in the laminated film of the present invention consist of the above-mentioned components, but antioxidants, antistatic agents, colorants, etc. can also be added to each layer as needed.
上述の非発泡層と発泡層を積層することによ
り、本発明の積層フイルムは形成されるが、ここ
で非発泡層と発泡層との層厚の比率は、特に限定
されるものではなく、使用目的、フイルム厚み、
成形性などを考慮して適宜決定することができ
る。 The laminated film of the present invention is formed by laminating the above-mentioned non-foamed layer and foamed layer, but the ratio of the layer thicknesses of the non-foamed layer and the foamed layer is not particularly limited, and it is possible to purpose, film thickness,
It can be appropriately determined in consideration of moldability and the like.
以上の如き本発明の積層フイルムは、様々な方
法により製造することができ、例えば発泡層を外
層とするダイ内接着インフレーシヨン成形法、発
泡層を内層とするダイ内接着インフレーシヨン成
形法あるいはＴダイ法などによることができる。
そのうち、本発明の方法によれば、特に効率よく
しかもすぐれた性能の積層フイルムを得ることが
できる。 The laminated film of the present invention as described above can be manufactured by various methods, such as an in-die adhesive inflation molding method using a foam layer as an outer layer, and an in-die adhesive inflation molding method using a foam layer as an inner layer. Alternatively, a T-die method or the like can be used.
Among them, according to the method of the present invention, it is possible to obtain a laminated film particularly efficiently and with excellent performance.
本発明の方法では、非発泡層を構成する高密度
エチレン系重合体と発泡層を構成する低密度エチ
レン系重合体および発泡剤とをそれぞれの押出機
により充分溶融混練したものを、非発泡層を内
層、発泡層を外層としてダイ内接着共押出して、
さらにブロー比1.5〜６にてインフレーシヨン成
形する。この際、押出機内あるいはダイ内では発
泡層を構成する低密度エチレン系重合体および発
泡剤との混合物が、発泡倍率1.1〜5.0、好ましく
は1.2〜4.0の範囲で充分発泡するように温度等の
条件を選定すべきである。 In the method of the present invention, the high-density ethylene polymer constituting the non-foamed layer, the low-density ethylene polymer and the foaming agent constituting the foamed layer are sufficiently melt-kneaded using respective extruders, and then the non-foamed layer is The inner layer and the foam layer are co-extruded together in a die and are bonded together as an outer layer.
Furthermore, inflation molding is performed at a blow ratio of 1.5 to 6. At this time, the temperature is controlled in the extruder or die so that the mixture of the low-density ethylene polymer and the foaming agent constituting the foam layer is sufficiently foamed at an expansion ratio of 1.1 to 5.0, preferably 1.2 to 4.0. Conditions should be selected.
このようにして得られる本発明の積層フイルム
は、支持層である非発泡層が高密度エチレン系重
合体であるため、強度が大きくまた防湿性にすぐ
れたものであると共に、真珠様光沢のある発泡層
が形成されるため表面が美麗なフイルムとなる。
従つて、本発明の積層フイルムは、表面性、印刷
性、ヒートシール性、強度等にすぐれたものとし
て、フアツシヨンバツグ、風呂敷、包装袋、預金
通帳ケース、カードケース、ブツクカバー、テー
ブルクロスなどに好適に利用しうるものである。 The laminated film of the present invention obtained in this manner has high strength and excellent moisture resistance, and has a pearl-like luster because the non-foamed support layer is made of a high-density ethylene polymer. A foam layer is formed, resulting in a film with a beautiful surface.
Therefore, the laminated film of the present invention has excellent surface properties, printability, heat sealability, strength, etc., and can be used for fashion bags, wrapping cloths, packaging bags, bankbook cases, card cases, book covers, table cloths, etc. It can be suitably used for.
次に本発明の実施例を示す。 Next, examples of the present invention will be shown.
実施例 １
内層として高密度エチレン重合体（密度0.955
ｇ／cm3、MI0.05／10分）、外層として低密度エチ
レン重合体（密度0.924ｇ／cm3、MI3ｇ／10分）
および発泡剤としてアゾジカルボンアミドを１重
量％混合したものをそれぞれの押出機により溶融
混練し、内層：外層＝６：４（重量比）で押出
し、次いでこれらをダイ内接着型のサーキユーラ
ー・ダイに導入した後ブロー比４でインフレーシ
ヨン成形し積層フイルムを得た。Example 1 High-density ethylene polymer (density 0.955
g/cm 3 , MI 0.05/10 min), low density ethylene polymer as outer layer (density 0.924 g/cm 3 , MI 3 g/10 min)
A mixture of 1 wt. After the introduction, inflation molding was performed at a blow ratio of 4 to obtain a laminated film.
この積層フイルムは外層発泡倍率1.5倍の表面
真珠光沢を有する美麗なものであつた。 This laminated film was beautiful and had a pearlescent surface with an outer layer expansion ratio of 1.5 times.
実施例 ２
低密度エチレン重合体として密度0.921ｇ／
cm3、MI0.6ｇ／10分のものを用いたこと以外は実
施例１に準じて積層フイルムを得た。Example 2 Density 0.921g/ as low density ethylene polymer
A laminated film was obtained in the same manner as in Example 1, except that a film having a mass of cm 3 and an MI of 0.6 g/10 minutes was used.
この積層フイルムは外層発泡倍率1.8倍のやや
大きい発泡粒子の真珠光沢を有していた。 This laminated film had a pearlescent luster with slightly larger foamed particles with an outer layer expansion ratio of 1.8 times.
Claims (1)
低密度エチレン系重合体からなる発泡層を有する
積層フイルム。 ２ 高密度エチレン系重合体からなる非発泡層を
内層とし、発泡剤を含有する低密度エチレン系重
合体からなる発泡層を外層としてダイ内接着共押
出し、ブロー比1.5〜６にてインフレーシヨン成
形することを特徴とする積層フイルムの製造法。[Scope of Claims] 1. A laminated film having a non-foamed layer made of a high-density ethylene polymer and a foamed layer made of a low-density ethylene polymer. 2 Adhesive coextrusion in a die with a non-foamed layer made of a high-density ethylene polymer as an inner layer and a foamed layer made of a low-density ethylene polymer containing a blowing agent as an outer layer, and inflation at a blow ratio of 1.5 to 6. A method for producing a laminated film characterized by molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2739182A JPS58145440A (en) | 1982-02-24 | 1982-02-24 | Laminated film and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2739182A JPS58145440A (en) | 1982-02-24 | 1982-02-24 | Laminated film and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58145440A JPS58145440A (en) | 1983-08-30 |
| JPS6153222B2 true JPS6153222B2 (en) | 1986-11-17 |
Family
ID=12219758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2739182A Granted JPS58145440A (en) | 1982-02-24 | 1982-02-24 | Laminated film and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58145440A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014195992A (en) * | 2013-03-04 | 2014-10-16 | 株式会社細川洋行 | Polyethylene foamed sheet excellent in easy-to-tear property and package using the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19849263C2 (en) * | 1998-10-26 | 2003-06-12 | Moeller Plast Gmbh | Process for producing a component by coextrusion |
| JP2008037069A (en) * | 2006-08-10 | 2008-02-21 | Nissei Kagaku Kk | Insulative fusion-welding film and its manufacturing process, heat insulation barrier properties fusion-welding film |
| JP7055973B2 (en) * | 2016-12-09 | 2022-04-19 | スリーエム イノベイティブ プロパティズ カンパニー | Polymer multilayer film |
-
1982
- 1982-02-24 JP JP2739182A patent/JPS58145440A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014195992A (en) * | 2013-03-04 | 2014-10-16 | 株式会社細川洋行 | Polyethylene foamed sheet excellent in easy-to-tear property and package using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58145440A (en) | 1983-08-30 |
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