JPH0752340A - Multilayered plastic container - Google Patents
Multilayered plastic containerInfo
- Publication number
- JPH0752340A JPH0752340A JP5201394A JP20139493A JPH0752340A JP H0752340 A JPH0752340 A JP H0752340A JP 5201394 A JP5201394 A JP 5201394A JP 20139493 A JP20139493 A JP 20139493A JP H0752340 A JPH0752340 A JP H0752340A
- Authority
- JP
- Japan
- Prior art keywords
- container
- outer layer
- ethylene
- resin
- plastic container
- 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
- 229920003023 plastic Polymers 0.000 title claims abstract description 25
- 239000004033 plastic Substances 0.000 title claims abstract description 25
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000005977 Ethylene Substances 0.000 claims abstract description 27
- -1 cyclic olefin Chemical class 0.000 claims abstract description 24
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920006038 crystalline resin Polymers 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 229920006223 adhesive resin Polymers 0.000 claims description 8
- 239000004840 adhesive resin Substances 0.000 claims description 8
- 229920001577 copolymer Polymers 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 239000004711 α-olefin Substances 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 229920006127 amorphous resin Polymers 0.000 abstract description 8
- 239000011324 bead Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 72
- 239000011229 interlayer Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920005604 random copolymer Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920005630 polypropylene random copolymer Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 229920011250 Polypropylene Block Copolymer Polymers 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- WNBDFALPKHFDJO-UHFFFAOYSA-N pentadec-3-ene Chemical class CCCCCCCCCCCC=CCC WNBDFALPKHFDJO-UHFFFAOYSA-N 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、多層プラスチック容器
に関し、より詳細には、優れた表面光沢を有する多層プ
ラスチック容器に関する。FIELD OF THE INVENTION This invention relates to multi-layered plastic containers, and more particularly to multi-layered plastic containers having excellent surface gloss.
【０００２】[0002]
【従来の技術】プラスチック中空成形容器には、衛生
性、耐湿性、及び材料価格などの見地からポリエチレ
ン、ポリプロピレンなどのポリオレフィン樹脂が使用さ
れる場合が多い。近年、容器の商品価値向上の目的で外
表面に光沢を持たせた中空容器が望まれるようになって
きた。具体的には、外層がポリプロピレンのランダム共
重合体、内層がポリプロピレンのブロック共重合体であ
る多層容器、あるいは外層が低密度ポリエチレン、内層
が高密度ポリエチレンである多層容器などである。しか
し、これらの容器の表面光沢度は、せいぜい６０％程度
であり十分とはいえない。また、外層樹脂の硬度が低い
ため容器表面に傷が付きやすいという問題もある。2. Description of the Related Art Polyolefin resins such as polyethylene and polypropylene are often used for plastic hollow molded containers from the viewpoints of hygiene, moisture resistance and material cost. In recent years, a hollow container having a glossy outer surface has been desired for the purpose of improving the commercial value of the container. Specifically, it is a multi-layer container in which the outer layer is a random copolymer of polypropylene, the inner layer is a block copolymer of polypropylene, or a multi-layer container in which the outer layer is low-density polyethylene and the inner layer is high-density polyethylene. However, the surface glossiness of these containers is at most about 60%, which is not sufficient. There is also a problem that the surface of the container is easily scratched because the hardness of the outer layer resin is low.
【０００３】環状オレフィンとエチレンを共重合させた
非結晶性樹脂は、透明性、表面光沢性に非常に優れ、ま
た硬度も高く表面に傷が付きにくい性質を有している。
しかし、この樹脂は衝撃強度が弱く、またパリソン押出
時にパリソンが下に垂れ下がる現象（ドローダウン）を
生じ易いなど、成形性が乏しいという欠点を持ってい
る。したがって、環状オレフィンとエチレンを共重合さ
れた非結晶性樹脂単独では成形性が悪く、また容器の耐
衝撃強度が不十分である。The non-crystalline resin obtained by copolymerizing a cyclic olefin and ethylene has excellent transparency and surface gloss, and also has a high hardness and is hard to be scratched on the surface.
However, this resin has drawbacks of poor moldability, such as low impact strength and a tendency of the parison to hang down (drawdown) during extrusion of the parison. Therefore, the non-crystalline resin obtained by copolymerizing the cyclic olefin and ethylene alone has poor moldability, and the impact strength of the container is insufficient.
【０００４】[0004]
【発明が解決しようとする課題】したがって、本発明の
解決しようとする課題は、優れた表面光沢、耐衝撃性を
有し、かつボトル表面が傷つきにくく、さらに成形性に
も優れた多層プラスチック容器を提供することである。Therefore, the problem to be solved by the present invention is to provide a multi-layer plastic container having excellent surface gloss and impact resistance, which is not easily scratched on the bottle surface and which is excellent in moldability. Is to provide.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、少なくとも２種以上の樹脂層が積層され
た構造の多層プラスチック容器において、外層が環状オ
レフィンとエチレンを共重合させた非結晶性樹脂であ
り、内層がポリオレフィン樹脂である多層プラスチック
容器である。In order to solve the above-mentioned problems, the present invention provides a multilayer plastic container having a structure in which at least two kinds of resin layers are laminated, and an outer layer is a copolymer of cyclic olefin and ethylene. A multi-layer plastic container which is an amorphous resin and whose inner layer is a polyolefin resin.
【０００６】また、実施態様としては、外層の環状ポリ
オレフィンとエチレンを共重合させた非結晶性樹脂と内
層のポリオレフィン樹脂の間に、両者を接着させるため
の接着性樹脂を介在させた少なくとも３種以上の樹脂層
が積層された上記の多層プラスチック容器であり、前記
接着性樹脂として、エチレンとαオレフィンの共重合体
の酸変性物を用いる多層プラスチック容器が特に好まし
い。Further, as an embodiment, at least three kinds in which an adhesive resin for adhering both of them is interposed between a non-crystalline resin which is a copolymer of cyclic polyolefin and ethylene in the outer layer and a polyolefin resin of the inner layer. It is the above-mentioned multilayer plastic container in which the above resin layers are laminated, and a multilayer plastic container using an acid-modified product of a copolymer of ethylene and α-olefin as the adhesive resin is particularly preferable.
【０００７】さらに、外層が環状オレフィンとエチレン
を共重合させた非結晶性樹脂であり、内層がポリオレフ
ィン樹脂である多層プラスチック容器において、外層の
環状ポリオレフィンとエチレンを共重合させた非結晶性
樹脂と内層のポリオレフィン樹脂の間に、前記容器のリ
サイクル材（粉砕物）を含む樹脂層を１層設けた上記の
多層プラスチック容器が挙げられる。Further, in a multilayer plastic container in which the outer layer is a non-crystalline resin obtained by copolymerizing a cyclic olefin and ethylene and the inner layer is a polyolefin resin, a non-crystalline resin obtained by copolymerizing an outer layer of the cyclic polyolefin with ethylene is used. The above-mentioned multi-layer plastic container in which one resin layer containing the recycled material (crushed material) of the container is provided between the polyolefin resin of the inner layer can be mentioned.
【０００８】[0008]
【発明の具体的説明】本発明の多層プラスチック容器の
一例を示す図１において、容器１は胴部２、胴部２の下
端に連なりしかもパリソンのピンチオフにより形成され
た底部３、胴部２の上端に肩部４を介して連なる口頚部
５から成っており、この口頚部５には蓋体（図示せず）
と密封係合される口部６及び口部６の下方のネジ、ビー
ト、フランジ或いは段肩などからなる蓋取付部７が設け
られている。DETAILED DESCRIPTION OF THE INVENTION Referring to FIG. 1 showing an example of the multi-layer plastic container of the present invention, the container 1 comprises a body portion 2, a bottom portion 3 connected to the lower end of the body portion 2 and formed by pinch-off of a parison, and the body portion 2. It is composed of a mouth / neck 5 connected to the upper end via a shoulder 4, and a lid (not shown) is attached to the mouth / neck 5.
A lid mounting portion 7 is provided which is made of a screw, a beet, a flange, a shoulder or the like below the mouth portion 6 which is sealingly engaged with the mouth portion 6.
【０００９】この多層プラスチック容器のＡ部の容器壁
断面を拡大して示す図２において、この容器壁は本発明
の環状オレフィンとエチレンを共重合させた非結晶性樹
脂からなる外層１０及びポリオレフィンから成る内層１
１から構成されいる。本発明による多層プラスチック容
器における重要な特徴は、外層に環状オレフィンとエチ
レンを共重合させた非結晶性樹脂を使用する点にある。In FIG. 2, which is an enlarged view of the cross section of the container wall of the portion A of this multi-layer plastic container, the container wall is composed of the outer layer 10 of the non-crystalline resin obtained by copolymerizing the cyclic olefin and ethylene of the present invention and the polyolefin. Inner layer consisting of 1
It consists of 1. An important feature of the multi-layer plastic container according to the present invention is that an amorphous resin obtained by copolymerizing a cyclic olefin and ethylene is used in the outer layer.
【００１０】従来、この種の優れた光沢性を有する容器
の最外層にはポリプロピレンランダムコポリマーや低密
度ポリエチレンが用いられていた。しかし、これらの樹
脂を用いた場合でも光沢度は高々６０％程度であり、ま
た表面に傷が付きやすいという欠点を持っていた。本発
明は、外層に環状オレフィンとエチレンを共重合させた
非結晶性樹脂を使用することにより、非常に高い表面光
沢性を有し、且つ内容物の充填ラインやボトル搬送時に
ボトル表面に傷が付きにくいボトルを提供する。Conventionally, polypropylene random copolymers and low density polyethylene have been used for the outermost layer of containers of this type having excellent gloss. However, even when these resins are used, the glossiness is at most about 60% and there is a drawback that the surface is easily scratched. The present invention, by using a non-crystalline resin copolymerized with a cyclic olefin and ethylene in the outer layer, has a very high surface gloss, and scratches on the bottle surface during the filling line of the contents and the bottle transportation. Provides bottles that are difficult to stick.
【００１１】また、内層に耐衝撃性に優れ、且つ成形性
のよいポリオレフィン樹脂を用いることにより、外層に
用いる環状オレフィンとエチレンを共重合させた非結晶
性樹脂の持つ衝撃強度が小さく、また成形性が悪いとい
う欠点を補うことができる。Further, by using a polyolefin resin having excellent impact resistance and good moldability for the inner layer, the impact strength of the amorphous resin obtained by copolymerizing the cyclic olefin and ethylene used for the outer layer is small, and the molding is also possible. It can make up for the disadvantage of poor sex.
【００１２】本発明における多層プラスチック容器は、
外層に環状オレフィンとエチレンを共重合させた非結晶
性樹脂、内層にポリオレフィン樹脂を用いた２層構成を
基本とするが、それら２つの樹脂の中間層として接着性
樹脂を介在させてもよい。接着性樹脂として用いるもの
としては、強固な接着を得るためエチレンとαオレフィ
ンの共重合体の無水マレイン酸変性物を用いることが望
ましい。また、材料の無駄をなくすため、外層と内層の
間に概容器のリサイクル材（粉砕物）を含む樹脂層を設
けることもできる。The multi-layer plastic container according to the present invention comprises
A two-layer structure is basically used in which an amorphous resin in which a cyclic olefin and ethylene are copolymerized is used for the outer layer and a polyolefin resin is used for the inner layer, but an adhesive resin may be interposed as an intermediate layer between these two resins. As the adhesive resin, it is desirable to use a maleic anhydride modified product of a copolymer of ethylene and α-olefin in order to obtain strong adhesion. Further, in order to eliminate waste of material, a resin layer containing a recycled material (crushed material) of the container can be provided between the outer layer and the inner layer.
【００１３】外層に用いる環状オレフィンとエチレンを
共重合させた非結晶性樹脂の環状オレフィンとしては、
ピシクロ［２、２、１］ヘプトジエン誘導体、テトラシ
クロ−３−ドデセン誘導体、ヘキサシクロ−４−ヘプタ
デセン誘導体、オクタシクロ−５−ドコセン誘導体、ペ
ンタシクロ−４−ヘキサデセン誘導体、ペンタシクロ−
３−ペンタデセン誘導体、ヘプタシクロ−４−エコイセ
ン誘導体、ノナシクロ−５−ペンタコセン誘導体等を用
いることができる。また、環状オレフィンとエチレンを
基本成分とするが、プロピレン、ブテン等のα−オレフ
ィンを含有していてもよい。As the cyclic olefin of the non-crystalline resin obtained by copolymerizing ethylene with the cyclic olefin used for the outer layer,
Picocyclo [2,2,1] heptodiene derivative, tetracyclo-3-dodecene derivative, hexacyclo-4-heptadecene derivative, octacyclo-5-docosene derivative, pentacyclo-4-hexadecene derivative, pentacyclo-
A 3-pentadecene derivative, a heptacyclo-4-ecoisene derivative, a nonacyclo-5-pentacocene derivative, or the like can be used. Further, although the cyclic olefin and ethylene are the basic components, the α-olefin such as propylene or butene may be contained.
【００１４】内層に用いるポリオレフィン樹脂として
は、ポリエチレン、ポリプロピレン等を用いることがで
きる。As the polyolefin resin used for the inner layer, polyethylene, polypropylene or the like can be used.
【００１５】[0015]
【作用】本発明では、外層に環状オレフィンとエチレン
を共重合させた非結晶性樹脂、内層にポリオレフィン樹
脂を用いることにより、優れた表面光沢性を有し、耐衝
撃性、耐傷つき性、成形性も問題のない容器を提供可能
とする。また、前記非結晶性樹脂とポリオレフィン樹脂
の間に接着性樹脂層を設けることにより、層間接着強度
を強くできる。In the present invention, by using a non-crystalline resin in which a cyclic olefin and ethylene are copolymerized in the outer layer and a polyolefin resin in the inner layer, it has excellent surface gloss, impact resistance, scratch resistance and molding. It is possible to provide a container that does not have a problem in its properties. Further, by providing an adhesive resin layer between the non-crystalline resin and the polyolefin resin, the interlayer adhesive strength can be increased.
【００１６】[0016]
【実施例】以下に本発明の実施例とその比較例を示す。EXAMPLES Examples of the present invention and comparative examples are shown below.
【００１７】（実施例１）容器外層としてエチレンとテ
トラシクロ−３−ドデセンとのランダム共重合体を外層
用押出機に供給し、内層として高密度ポリエチレンを内
層用押出機に供給して、２層溶融パリソンを押出し、こ
のパリソンをブロー金型ないでブロー成形して胴部平均
肉厚７００μｍ、内容積８００ｍｌのボトルを成形し
た。パリソンのドローダウンは小さく、成形性は良好で
あった。このボトルの光沢度測定結果、落下試験結果、
及び外層と内層の層間接着強度測定結果を（表１）に示
す。(Example 1) A random copolymer of ethylene and tetracyclo-3-dodecene was supplied to the extruder for the outer layer as the outer layer of the container, and high density polyethylene was supplied to the extruder for the inner layer as the inner layer to form two layers. The molten parison was extruded, and this parison was blow-molded without a blow mold to mold a bottle having an average wall thickness of 700 μm and an internal volume of 800 ml. The drawdown of the parison was small and the moldability was good. The gloss measurement result of this bottle, the drop test result,
Table 1 shows the measurement results of the interlayer adhesive strength between the outer layer and the inner layer.
【００１８】（実施例２）容器外層としてエチレンとテ
トラシクロ−３−ドデセンとのランダム共重合体を外層
用押出機に供給し、中間層としてエチレン／α−オレフ
ィン共重合体の無水マレイン酸変性物を中間層用押出機
に供給し、内層として高密度ポリエチレンを内層用押出
機に供給して、３層溶融パリソンを押出し、このパリソ
ンをブロー金型ないでブロー成形して胴部平均肉厚７０
０μｍ、内容積８００ｍｌのボトルを成形した。パリソ
ンのドローダウンは小さく、成形性は良好であった。こ
のボトルの光沢度測定結果、落下試験結果、及び外層と
中間層の層間接着強度測定結果を（表１）に示す。Example 2 A random copolymer of ethylene and tetracyclo-3-dodecene was supplied to the extruder for the outer layer as the outer layer of the container, and a maleic anhydride modified product of the ethylene / α-olefin copolymer was used as the intermediate layer. Is fed to the extruder for the intermediate layer, high-density polyethylene as the inner layer is fed to the extruder for the inner layer, and the three-layer molten parison is extruded.
A bottle of 0 μm and an internal volume of 800 ml was molded. The drawdown of the parison was small and the moldability was good. Table 1 shows the results of measuring the glossiness of the bottle, the results of the drop test, and the results of measuring the interlayer adhesive strength between the outer layer and the intermediate layer.
【００１９】（比較例１）容器外層としてポリプロピレ
ンランダムコポリマーを使用し、内層にポリプロピレン
ブロックコポリマーを使用した以外は実施例１と同様に
ボトルを成形した。このボトルの光沢度測定結果及び落
下試験結果を（表１）に示す。Comparative Example 1 A bottle was molded in the same manner as in Example 1 except that a polypropylene random copolymer was used as the outer layer of the container and a polypropylene block copolymer was used as the inner layer. The results of gloss measurement and drop test of this bottle are shown in (Table 1).
【００２０】[0020]
【表１】 [Table 1]
【００２１】（表１）における、光沢度はＪＩＳ Ｋ
７１０５に準拠、入射角６０゜、落下試験結果はボトル
１０本に水を８００ｍｌ充填し、５℃に１２時間保存
後、正立状態でコンクリート上に１ｍの高さより１０回
自由落下させた場合の割れ本数を示している。また、層
間接着強度は試験片巾１５ｍｍ、剥離速度３００ｍｍ／
ｍｉｎ、９０°剥離。The glossiness in Table 1 is JIS K.
According to 7105, incident angle 60 °, drop test result shows that 10 bottles were filled with 800 ml of water, stored at 5 ° C for 12 hours, and then freely dropped 10 times from a height of 1 m on concrete in an upright state. The number of cracks is shown. The interlayer adhesion strength was 15 mm for the width of the test piece and 300 mm for the peeling speed.
Min, 90 ° peeling.
【００２２】[0022]
【発明の効果】本発明によれば、外層に環状オレフィン
とエチレンを共重合された非結晶性樹脂、内層にポリオ
レフィン樹脂を用いることにより、耐衝撃性、耐傷つき
性、成形性に問題がなく、優れた表面光沢性を有する商
品価値の高い容器を得ることができる。また、前記外層
の非結晶性樹脂と内層のポリオレフィン樹脂の間に接着
性樹脂を介在させることのより、両者の層間接着強度を
強くできる。さらに、前記外層の非結晶性樹脂と内層の
ポリオレフィン樹脂の間に、前記容器のリサイクル材を
含む樹脂層を１層設けることにより、材料の無駄をなく
すことができる。EFFECTS OF THE INVENTION According to the present invention, by using a non-crystalline resin in which a cyclic olefin and ethylene are copolymerized in the outer layer and a polyolefin resin in the inner layer, there is no problem in impact resistance, scratch resistance and moldability. It is possible to obtain a container having a high commercial value and having excellent surface gloss. Further, by interposing an adhesive resin between the amorphous resin of the outer layer and the polyolefin resin of the inner layer, the interlayer adhesive strength between the two can be increased. Further, by providing one resin layer containing the recycled material of the container between the amorphous resin of the outer layer and the polyolefin resin of the inner layer, waste of material can be eliminated.
【００２３】[0023]
【図１】本発明の多層プラスチック容器の一実施例の断
面図である。FIG. 1 is a cross-sectional view of an embodiment of the multi-layer plastic container of the present invention.
【図２】本発明の多層プラスチック容器の一実施例であ
る図１のＡの部分の拡大説明図である。FIG. 2 is an enlarged explanatory view of a portion A in FIG. 1, which is an example of the multilayer plastic container of the present invention.
１…容器 ２…胴部 ３…底部 ４…肩部 ５…口頚部
６…口部 ７…蓋取付部 １０…外層 １１…内層DESCRIPTION OF SYMBOLS 1 ... Container 2 ... Body part 3 ... Bottom part 4 ... Shoulder part 5 ... Mouth neck part 6 ... Mouth part 7 ... Lid mounting part 10 ... Outer layer 11 ... Inner layer
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｊ 123/08 ＪＣＬ Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display area C09J 123/08 JCL
Claims (4)
構造の多層プラスチック容器において、外層が環状オレ
フィンとエチレンを共重合させた非結晶性樹脂であり、
内層がポリオレフィン樹脂であることを特徴とする多層
プラスチック容器。1. A multilayer plastic container having a structure in which at least two or more resin layers are laminated, and the outer layer is a non-crystalline resin obtained by copolymerizing a cyclic olefin and ethylene,
A multilayer plastic container having an inner layer made of a polyolefin resin.
重合させた非結晶性樹脂と内層のポリオレフィン樹脂の
間に、両者を接着させるための接着性樹脂を介在させた
ことを特徴とする少なくとも３種以上の樹脂層が積層さ
れた請求項１記載の多層プラスチック容器。2. An adhesive resin for adhering both of a non-crystalline resin obtained by copolymerizing ethylene with a cyclic polyolefin as an outer layer and a polyolefin resin as an inner layer, at least three kinds. The multilayer plastic container according to claim 1, wherein the above resin layers are laminated.
ンの共重合体の酸変性物を用いることを特徴とする請求
項２記載の多層プラスチック容器。3. The multilayer plastic container according to claim 2, wherein an acid-modified product of a copolymer of ethylene and α-olefin is used as the adhesive resin.
させた非結晶性樹脂であり、内層がポリオレフィン樹脂
である多層プラスチック容器において、外層の環状ポリ
オレフィンとエチレンを共重合させた非結晶性樹脂と内
層のポリオレフィン樹脂の間に、前記容器のリサイクル
材（粉砕物）を含む樹脂層を１層設けたことを特徴とす
る請求項１及至３記載の多層プラスチック容器。4. A multilayer plastic container having an outer layer made of a copolymer of cyclic olefin and ethylene and an inner layer made of a polyolefin resin, wherein the outer layer is made of a non-crystalline resin obtained by copolymerizing ethylene with a cyclic polyolefin. The multilayer plastic container according to any one of claims 1 to 3, wherein one layer of a resin containing a recycled material (crushed material) of the container is provided between the polyolefin resins of the inner layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5201394A JPH0752340A (en) | 1993-08-13 | 1993-08-13 | Multilayered plastic container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5201394A JPH0752340A (en) | 1993-08-13 | 1993-08-13 | Multilayered plastic container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0752340A true JPH0752340A (en) | 1995-02-28 |
Family
ID=16440368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5201394A Pending JPH0752340A (en) | 1993-08-13 | 1993-08-13 | Multilayered plastic container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752340A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11240527A (en) * | 1998-02-27 | 1999-09-07 | Kyoraku Co Ltd | Blow molded container |
| WO2002038452A1 (en) * | 2000-11-09 | 2002-05-16 | Tetra Laval Holdings & Finance S.A. | Extrusion-molded hollow container made of polyolefin |
| GB2480856A (en) * | 2010-06-03 | 2011-12-07 | Norwich Pharma Technologies Ltd | A swirl imparting spray nozzle on a single-use dispensing canister |
-
1993
- 1993-08-13 JP JP5201394A patent/JPH0752340A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11240527A (en) * | 1998-02-27 | 1999-09-07 | Kyoraku Co Ltd | Blow molded container |
| WO2002038452A1 (en) * | 2000-11-09 | 2002-05-16 | Tetra Laval Holdings & Finance S.A. | Extrusion-molded hollow container made of polyolefin |
| GB2480856A (en) * | 2010-06-03 | 2011-12-07 | Norwich Pharma Technologies Ltd | A swirl imparting spray nozzle on a single-use dispensing canister |
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