JPH06278164A - Non-circular symmetric multi-layer injected container - Google Patents
Non-circular symmetric multi-layer injected containerInfo
- Publication number
- JPH06278164A JPH06278164A JP6680993A JP6680993A JPH06278164A JP H06278164 A JPH06278164 A JP H06278164A JP 6680993 A JP6680993 A JP 6680993A JP 6680993 A JP6680993 A JP 6680993A JP H06278164 A JPH06278164 A JP H06278164A
- Authority
- JP
- Japan
- Prior art keywords
- container
- layer
- resin
- circular
- thickness
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
- B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
- B65D1/28—Thin-walled containers, e.g. formed by deep-drawing operations formed of laminated material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/08—Copolymers of ethylene
- B29K2023/086—EVOH, i.e. ethylene vinyl alcohol copolymer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0068—Permeability to liquids; Adsorption
- B29K2995/0069—Permeability to liquids; Adsorption non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7162—Boxes, cartons, cases
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチック製の多層
容器で、特にはデザート、ヨーグルト等の食品を収納す
るのに好適な射出成形により成形される非円形で且つ対
称な多層容器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic multi-layer container, and more particularly to a non-circular and symmetrical multi-layer container formed by injection molding suitable for storing food such as desserts and yogurt. is there.
【０００２】[0002]
【従来の技術】従来より、食品等を収納する容器として
は、ガスバリヤー性や内容物適性の理由からプラスチッ
クの多層容器が使用されてきている。サンドイッチ成
形、同時射出成形を始めとする多層射出成形法で多層容
器を成形する場合、容器の樹脂注入口から容器開口部末
端までの距離が等しくなければならないという制約か
ら、容器形状は、円形の丸形カップ状の対称な形状に限
定されるという問題点があった。2. Description of the Related Art Hitherto, as a container for storing foods and the like, a multi-layered plastic container has been used because of its gas barrier property and suitability for contents. When molding a multi-layer container by a multi-layer injection molding method such as sandwich molding and simultaneous injection molding, the container shape is circular because of the constraint that the distance from the resin injection port of the container to the end of the container opening must be equal. There is a problem that the shape is limited to a round cup-shaped symmetrical shape.
【０００３】この制約の理由は、容器の外層及び内層と
なる第１の樹脂を型キャビティに不十分な量を射出し、
その後キャビティ中心部の樹脂が溶融状態にある内に容
器の中間層となるべき第２の樹脂を射出することによっ
てなるサンドイッチ成形法、同心円ノズルを用いて中間
層となる樹脂を外層及び内層となる樹脂で包みながら同
時に１つのキャビティに射出する同時射出成形法共に、
非円対称（例えば、角形形状）の様に、樹脂の注入口か
ら容器開口部末端までの距離が異なると樹脂の充填が均
一に行われず流動距離の短いところが早く、距離の長い
ところが遅く充填されるため、流動の途中で中間層が外
層及び内層となる樹脂層を突き破ってしまい表面に露出
したり、逆に中間層が末端まで届かなく外層と内層の樹
脂のみになってしまい、目的とする多層構造が容器全体
に渡り達成できないためである。The reason for this restriction is that an insufficient amount of the first resin, which forms the outer and inner layers of the container, is injected into the mold cavity,
After that, a sandwich molding method is performed by injecting a second resin to be the intermediate layer of the container while the resin in the center of the cavity is in a molten state, and the concentric nozzle is used to form the intermediate layer resin into the outer layer and the inner layer. With the simultaneous injection molding method that wraps with resin and injects into one cavity at the same time,
If the distance from the resin injection port to the end of the container opening is different, such as non-circular symmetry (for example, prismatic shape), the resin will not be filled uniformly and the portion with a short flow distance will fill earlier and the portion with a longer distance will fill slowly. Therefore, the middle layer breaks through the resin layers that will be the outer and inner layers and is exposed on the surface during the flow, or conversely, the middle layer does not reach the end and only the resin of the outer layer and the inner layer is left. This is because a multilayer structure cannot be achieved over the entire container.
【０００４】しかし、プリン、コーヒーゼリー及びヨー
グルト等のデザート食品においては、外観上のデザイ
ン、あるいは持ち易さという観点から、角形形状の脚付
き多層容器が望まれるところであるが、いまだ実現され
ていない。However, for dessert foods such as pudding, coffee jelly, and yogurt, a square-shaped multi-layer container with legs is desired from the viewpoint of appearance design or ease of holding, but it has not been realized yet. .
【０００５】[0005]
【発明が解決しようとする課題】本発明は以上のような
問題点に着目してなされたもので、食品等を内容物とし
て収納する容器の形状が非円対称の多層射出容器を提供
することを課題とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a multi-layer injection container having a non-circularly symmetric container for storing foods and the like as contents. Is an issue.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記課題を解
決するために、合成樹脂が少なくとも３層以上の層構成
をなし、容器形状が非円対称を呈する非円対称多層射出
容器であって、前記容器の容器底部肉厚の一部が容器底
部肉厚の１．１０から１．２０倍の厚肉である肉厚分布
を有することを特徴とする非円対称多層射出容器であ
る。In order to solve the above-mentioned problems, the present invention is a non-circular symmetric multi-layer injection container in which a synthetic resin has a layered structure of at least three layers and the container shape is non-circular symmetric. The non-circular symmetric multi-layer injection container is characterized in that a part of the container bottom wall thickness has a wall thickness distribution that is 1.10 to 1.20 times the container bottom wall thickness.
【０００７】実施態様としては、合成樹脂の１層が、ガ
スバリヤー性を有する樹脂よりなる上記の非円対称多層
射出容器や容器本体の下方に脚部を有する前記の非円対
称多層射出容器が挙げられる。As an embodiment, the above-mentioned non-circularly symmetric multi-layered injection container in which one layer of synthetic resin is made of a resin having gas barrier property and the non-circularly symmetric multi-layered injection container having legs below the container body are used. Can be mentioned.
【０００８】以下、本発明を図面に基づき詳細に説明す
る。図１は、本発明による非円対称角形多層容器の一実
施例を示す説明図である。図１（ａ）は下方から見た図
であり、図１（ｂ）は中心腺１２で切った断面である。
容器本体１０のアスペクト比＝Ａ（長辺長さ）／Ｂ（短
辺長さ） が１から２で樹脂の注入口１４は、容器底部
中央の位置にある。樹脂の注入口１４を通り容器短辺側
に引かれる中心線１２で２等分される放射角度αが３０
度から６０度で規定されるハッチングで示された領域の
肉厚が容器底部の基準とする肉厚の１．１０から１．２
０倍の厚肉である部分である。容器本体１０の下方に備
わる脚部１３長さは、容器深さの概ね２０％以内、望ま
しくは１５％以内である。The present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of a non-circularly symmetric rectangular multilayer container according to the present invention. FIG. 1A is a view seen from below, and FIG. 1B is a cross section taken along the central gland 12.
The container body 10 has an aspect ratio = A (long side length) / B (short side length) of 1 to 2, and the resin injection port 14 is located at the center of the bottom of the container. The radiation angle α, which is bisected by the center line 12 drawn through the resin inlet 14 toward the short side of the container, is 30.
The thickness of the hatched area defined from 60 to 60 degrees is 1.10 to 1.2 of the reference wall thickness of the container bottom.
It is a part that is 0 times thicker. The length of the leg portion 13 provided below the container body 10 is approximately 20% or less, preferably 15% or less of the container depth.
【０００９】上記のように容器形状を規定した場合の樹
脂の充填過程は、樹脂の注入口１４より射出された樹脂
は注入口１４を中心として放射状に流動して行くが、肉
厚分布のため厚肉部分は薄肉部分に比べ樹脂の流動抵抗
が小さくなり、より流れ易くなるので早く充填が進行す
る。その結果容器開口部末端１１までの流動距離が長辺
側は長いにもかかわらず、短辺側とほぼ同時に容器開口
部末端１１までの充填が終了する。そのため、中間層３
も内外層１の樹脂に包まれたまま容器開口部末端１１ま
で流動が継続し、流動の途中で外層および内層となる樹
脂層を突き破って表面に中間層３が露出したり、容器開
口部末端１１に到達する前に中間層３の流動が停止して
しまうことが防止できる。In the resin filling process when the container shape is defined as described above, the resin injected from the resin injection port 14 flows radially around the injection port 14, but due to the thickness distribution. The flow resistance of the resin in the thick portion is smaller than that in the thin portion, and the resin flows more easily, so that the filling proceeds faster. As a result, although the flow distance to the container opening end 11 is long on the long side, the filling to the container opening end 11 is completed almost simultaneously with the short side. Therefore, the intermediate layer 3
Also continues to flow to the end 11 of the container opening while being wrapped in the resin of the inner and outer layers 1 and breaks through the resin layers to be the outer layer and the inner layer during the flow to expose the intermediate layer 3 on the surface, or the end of the container opening. It is possible to prevent the flow of the intermediate layer 3 from stopping before reaching 11.
【００１０】図２は、本発明による非円対称角形多層容
器の一実施例の断面構成を示す説明図である。ここで、
容器本体１０は中間層として、エチレン酢酸ビニル共重
合体ケン化物（以下ＥＶＯＨという）、ポリ塩化ビニリ
デンなどのガスバリヤー性樹脂層３、内外層１として
は、内容物適性あるいは強度適性のあるポリプロピレン
樹脂、ポリスチレン樹脂など、また前記ガスバリヤー性
樹脂層３と最内外層１を接着するための接着剤層２より
なる３種５層の層構成を有している。接着剤層２は内外
層１とガスバリヤー性樹脂層３の種類により適時選択で
きるが、エチレン−酢酸ビニルコポリマ−ベ−ス樹脂、
ポリプロピレン変性樹脂としてのマレイン酸グラフト変
性ポリプロピレン樹脂などか用いられる。FIG. 2 is an explanatory view showing the cross-sectional structure of an embodiment of the non-circularly symmetric prismatic multilayer container according to the present invention. here,
The container body 10 is a saponified ethylene vinyl acetate copolymer (hereinafter referred to as EVOH), a gas barrier resin layer 3 such as polyvinylidene chloride, etc. as the intermediate layer, and the inner and outer layers 1 are polypropylene resins having suitable contents or strength. , Polystyrene resin and the like, and has a layer structure of 5 layers of 3 types consisting of an adhesive layer 2 for adhering the gas barrier resin layer 3 and the innermost outer layer 1. The adhesive layer 2 can be appropriately selected depending on the types of the inner and outer layers 1 and the gas barrier resin layer 3, but ethylene-vinyl acetate copolymer-based resin,
As the polypropylene modified resin, a maleic acid graft modified polypropylene resin or the like is used.
【００１１】そして、その製造方法は合成樹脂の層が３
層で有ればサンドイッチ成形法、同時射出成形法といっ
た公知の多層射出成形方法で可能であり、上記した３種
５層の構成とするならば出願人が提案した「脚付き多層
容器およびその製造方法」特願平３−１８７５７７号、
により実現可能である。The manufacturing method is such that the synthetic resin layer is three layers.
If it is a layer, it can be carried out by a known multilayer injection molding method such as a sandwich molding method or a simultaneous injection molding method. If the above-mentioned structure of 5 layers of 3 types is proposed, the "multilayer container with legs and its manufacture" proposed by the applicant. Method "Japanese Patent Application No. 3-187577,
Can be realized by
【００１２】[0012]
【作用】本発明の非円対称多層射出容器は、容器底部に
底部の基準肉厚に対して１．１０から１．２０倍の厚肉
部分の肉厚分布を一定の領域に設けることで、樹脂の注
入口より容器開口部末端までの流動長さが異なる非円対
称の容器であっても容器開口部末端までの樹脂の充填が
ほぼ同時に終了するため容器全体に渡り中間層が形成さ
れ、部分的に中間層が表面に露出したり、存在しない領
域の発生を防ぐ事ができる。また、中間層をガスバリヤ
ー性樹脂層としたり、容器本体下方に脚部を有する事
で、内容物適性と外観上のデザイン、あるいは持ち易さ
といった観点からも従来より望まれていた角形等の非円
対称多層射出容器の提供を可能とする。In the non-circularly symmetric multi-layer injection container of the present invention, the wall thickness distribution of the thick wall portion, which is 1.10 to 1.20 times the reference wall thickness of the bottom portion, is provided in a fixed region on the bottom of the container. Even in a non-circular symmetric container with different flow lengths from the resin injection port to the container opening end, the intermediate layer is formed over the entire container because the resin filling up to the container opening end ends almost at the same time. It is possible to prevent the intermediate layer from being partially exposed on the surface and the generation of a nonexistent region. In addition, by using a gas barrier resin layer as the intermediate layer and having a leg section below the container body, the rectangular shape and the like which has been conventionally desired from the viewpoints of suitability for contents and external design, or ease of holding. It is possible to provide a non-circularly symmetric multilayer injection container.
【００１３】[0013]
【実施例】容器のアスペクト比が１．３、容器全体の基
準肉厚を０．８ｍｍとし、容器底部の厚肉部分の肉厚が
０．８ｍｍの１．１３倍の０．９０ｍｍ、図１における
放射角度αが４５度、脚部の長さが容器深さの１３％で
ある満水容量１７０ｍｌの角形多層容器を出願人が提案
した前述の「脚付き多層容器およびその製造方法」によ
り３種５層の層構成である角形多層容器を成形した。す
なわち、内外層としてメルトインデックス２１のポリス
チレン樹脂、中間層にＥＶＯＨ樹脂、内外層とＥＶＯＨ
層との接着剤層としてエチレン−酢酸ビニルコポリマ−
ベースの樹脂を使用し、いずれの樹脂も樹脂温度２４０
度、金型温度は４０度で成形した。EXAMPLE A container has an aspect ratio of 1.3, a reference thickness of 0.8 mm for the entire container, and the thickness of the thick portion at the bottom of the container is 0.93 mm, which is 1.13 times 0.8 mm, as shown in FIG. 3 types according to the above-mentioned "multilayer container with legs and manufacturing method thereof" proposed by the applicant for a polygonal multilayer container having a radiation angle α of 45 degrees and a leg length of 13% of the container depth and a full water capacity of 170 ml. A rectangular multi-layer container having a five-layer structure was molded. That is, the polystyrene resin having a melt index of 21 is used as the inner and outer layers, the EVOH resin is used as the intermediate layer, and the EVOH resin is used as the inner and outer layers.
As an adhesive layer with ethylene-vinyl acetate copolymer
Using the base resin, the resin temperature is 240
And the mold temperature was 40 degrees.
【００１４】得られた容器は、中間層が容器全体に形成
されており、各層の平均肉厚は、外層が２００μｍ、内
層が１９０μｍ、接着剤層が１８０μｍ、そして中間層
の厚さが５０μｍであった。この角形多層容器をアルミ
ニウム製蓋材で密封し、酸素透過度を測定したところ
０．００８ｃｍ3 ／ｐａｃｋ・ｄａｙであった。なお酸
素透過度の測定には、ＭＯＤＥＮ ＣＯＮＴＲＯＬＳ
ＩＮＣ．製ＭＯＣＯＮ ＯＸＴＲＡＮ ＴＷＩＮを使用
した。The resulting container has an intermediate layer formed on the entire container, and the average thickness of each layer is 200 μm for the outer layer, 190 μm for the inner layer, 180 μm for the adhesive layer, and 50 μm for the intermediate layer. there were. The prismatic multilayer container was sealed with an aluminum lid and the oxygen permeability was measured and found to be 0.008 cm 3 / pack · day. In addition, for the measurement of oxygen permeability, MODEL CONTROLS
INC. A MOCON OXTRAN TWIN manufactured by MOCON was used.
【００１５】図３（ａ）は、同一形状の容器を市販の樹
脂流動解析のソフトウエアを用いて、シュミレーション
を行ったものである。解析に用いた樹脂は内外層として
使用したポリスチレン樹脂で、対称形状のため計算時間
を短縮する目的から４分の１の解析モデルで行ってい
る。図に示した解析結果は、樹脂注入口より射出された
樹脂流動の先端の軌跡を表したもので、容器開口部末端
にほぼ同時に樹脂が到達し、充填が完了する事が読み取
れる。図３（ｂ）は、同一の解析モデルにおいて、容器
底部に肉厚分布を付けず０．８ｍｍの一定の肉厚とした
場合に、同様の解析を行ったときの解析結果である。図
から明かであるのように、容器短辺側の充填が先に終了
し、その後に長辺側の充填が終了しており、容器底部の
肉厚が一定では、容器開口部末端までの充填が同時に完
了しない事が判る。このことから、中間層が流動の途中
で内外層を突き破り表面に露出したり、未到達の領域が
発生してしまう事を容易に推測できる。FIG. 3 (a) shows a simulation of a container of the same shape using a commercially available resin flow analysis software. The resin used for the analysis is the polystyrene resin used as the inner and outer layers, and the analysis model of 1/4 is used for the purpose of shortening the calculation time due to the symmetrical shape. The analysis result shown in the figure shows the trajectory of the tip of the resin flow injected from the resin injection port, and it can be read that the resin reaches the end of the container opening almost at the same time and the filling is completed. FIG. 3B is an analysis result when the same analysis is performed in the same analysis model when the container bottom has no wall thickness distribution and a constant wall thickness of 0.8 mm. As is clear from the figure, the filling on the short side of the container is completed first, and then the filling on the long side is completed, and if the wall thickness of the container bottom is constant, filling up to the end of the container opening is completed. It turns out that they are not completed at the same time. From this, it can be easily inferred that the intermediate layer broke through the inner and outer layers during the flow and was exposed on the surface, or an unreachable region was generated.
【００１６】[0016]
【発明の効果】本発明の非円対称多層射出容器によれ
ば、多層射出成形法による多層容器の形状が従来円形の
丸形カップ状に限られていたものが、本発明で提案した
容器底部に肉厚分布を設ける事で、プリン、コーヒーゼ
リーおよびヨーグルトといったデザート食品を収納する
容器として、外観上のデザインの良さ、あるいは持ち易
さという点で強く望まれていた角形等の非円対称の多層
射出容器を提供できる。また、中間層にガスバリヤー性
樹脂層を使用したものは、保存期間か長くなるなど内容
物適性にも優れており、また、脚付きにすると持ちやす
い等、消費者の嗜好にあう非円対称多層容器を提供する
事ができる。According to the non-circularly symmetric multi-layered injection container of the present invention, the shape of the multi-layered container formed by the multi-layered injection molding method is conventionally limited to the circular round cup shape. By providing a thickness distribution in the container, as a container for storing dessert foods such as pudding, coffee jelly and yogurt, a non-circular symmetry such as a square shape that has been strongly desired in terms of good appearance design and ease of holding. A multilayer injection container can be provided. In addition, the one using a gas barrier resin layer as the intermediate layer has excellent suitability for contents such as long storage period, and it is easy to hold with legs, etc. A multi-layer container can be provided.
【００１７】[0017]
【図１】本発明の非円対称多層射出容器の一実施例を示
す説明図である。（ａ）は下方から見た図であり、
（ｂ）は中心腺１２で切った断面である。FIG. 1 is an explanatory view showing an embodiment of a non-circularly symmetric multilayer injection container of the present invention. (A) is a view from below,
(B) is a cross section cut by the central gland 12.
【図２】本発明の非円対称多層射出容器の一実施例の断
面構成を示す説明図である。FIG. 2 is an explanatory view showing a cross-sectional structure of one embodiment of the non-circularly symmetric multilayer injection container of the present invention.
【図３】本発明の角形多層容器流動解析結果を示す図で
ある。 （ａ）肉厚分布を有する場合 （ｂ）肉厚分布の無い場合FIG. 3 is a diagram showing a flow analysis result of a rectangular multi-layered container of the present invention. (A) With thickness distribution (b) Without thickness distribution
１…内外層 ２…接着剤層 ３…ガスバリヤー性樹脂層
（中間層） １０…容器本体 １１…容器開口部末端
１２…中心線 １３…脚部 １４…樹脂の注入口 α…放射角度
DESCRIPTION OF SYMBOLS 1 ... Inner / outer layer 2 ... Adhesive layer 3 ... Gas barrier resin layer (intermediate layer) 10 ... Container body 11 ... Container opening end
12 ... Center line 13 ... Legs 14 ... Resin injection port α ... Radiation angle
Claims (3)
なし、容器形状が非円対称を呈する非円対称多層射出容
器であって、前記容器の容器底部肉厚の一部が容器底部
肉厚の１．１０から１．２０倍の厚肉である肉厚分布を
有することを特徴とする非円対称多層射出容器。1. A non-circularly symmetric multi-layer injection container in which a synthetic resin has a layered structure of at least three layers or more, and the shape of the container is non-circularly symmetric, wherein a part of the thickness of the bottom of the container is the bottom meat of the container. A non-circularly symmetric multilayer injection container having a thickness distribution that is 1.10 to 1.20 times the thickness.
る樹脂よりなることを特徴とする請求項１記載の非円対
称多層射出容器。2. A non-circularly symmetric multi-layer injection container according to claim 1, wherein one layer of synthetic resin is made of a resin having gas barrier properties.
とする請求項１乃至請求項２記載の非円対称多層射出容
器。3. The non-circularly symmetric multi-layer injection container according to claim 1, further comprising a leg portion below the container body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6680993A JP3339097B2 (en) | 1993-03-25 | 1993-03-25 | Non-circular symmetric multilayer injection container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6680993A JP3339097B2 (en) | 1993-03-25 | 1993-03-25 | Non-circular symmetric multilayer injection container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06278164A true JPH06278164A (en) | 1994-10-04 |
| JP3339097B2 JP3339097B2 (en) | 2002-10-28 |
Family
ID=13326562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6680993A Expired - Fee Related JP3339097B2 (en) | 1993-03-25 | 1993-03-25 | Non-circular symmetric multilayer injection container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3339097B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004323087A (en) * | 2003-04-28 | 2004-11-18 | Toppan Printing Co Ltd | Square cup-shaped plastic container |
| US20130101794A1 (en) * | 2011-10-21 | 2013-04-25 | Kortec, Inc. | Non-Symmetric Multiple Layer Injection Molded Products and Methods |
| US8801991B2 (en) | 2010-11-24 | 2014-08-12 | Kortec, Inc. | Heat-seal failure prevention method and article |
| WO2015171876A1 (en) * | 2014-05-07 | 2015-11-12 | Kortec, Inc. | Plastic container with flexible base portion |
| US9227349B2 (en) | 2010-07-16 | 2016-01-05 | Kortec, Inc. | Method of molding a multi-layer article |
| US9409333B2 (en) | 2010-03-08 | 2016-08-09 | Kortec, Inc. | Methods of molding multi-layer polymeric articles having control over the breakthrough of the core layer |
| EP3385188A1 (en) * | 2017-04-05 | 2018-10-10 | Ipl Inc. | Container and method of fabrication thereof |
| JP2019059483A (en) * | 2017-09-22 | 2019-04-18 | 大日本印刷株式会社 | In-mold label container and manufacturing method therefor |
| US10759101B2 (en) | 2014-01-24 | 2020-09-01 | Milacron Llc | Co-injection molded multi-layer article with injection-formed aperture between gate area and peripheral edge |
-
1993
- 1993-03-25 JP JP6680993A patent/JP3339097B2/en not_active Expired - Fee Related
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004323087A (en) * | 2003-04-28 | 2004-11-18 | Toppan Printing Co Ltd | Square cup-shaped plastic container |
| US10213944B2 (en) | 2010-03-08 | 2019-02-26 | Milacron Llc | Methods of molding multi-layer polymeric articles having control over the breakthrough of the core layer |
| US9409333B2 (en) | 2010-03-08 | 2016-08-09 | Kortec, Inc. | Methods of molding multi-layer polymeric articles having control over the breakthrough of the core layer |
| US9227349B2 (en) | 2010-07-16 | 2016-01-05 | Kortec, Inc. | Method of molding a multi-layer article |
| US8801991B2 (en) | 2010-11-24 | 2014-08-12 | Kortec, Inc. | Heat-seal failure prevention method and article |
| US9592652B2 (en) | 2010-11-24 | 2017-03-14 | Milacron Llc | Heat-seal failure prevention apparatus |
| CN103998202A (en) * | 2011-10-21 | 2014-08-20 | 考泰克公司 | Non-symmetric multiple layer injection molded products and methods |
| EP2768652B1 (en) | 2011-10-21 | 2018-04-18 | Milacron LLC | Non-symmetric multiple layer injection molded containers, molds and methods |
| JP2014534915A (en) * | 2011-10-21 | 2014-12-25 | コルテック，インコーポレーテッド | Asymmetric multilayer injection molded product and injection method |
| US9114906B2 (en) | 2011-10-21 | 2015-08-25 | Kortec, Inc. | Non-symmetric multiple layer injection molded products and methods |
| US20130101794A1 (en) * | 2011-10-21 | 2013-04-25 | Kortec, Inc. | Non-Symmetric Multiple Layer Injection Molded Products and Methods |
| US8491290B2 (en) | 2011-10-21 | 2013-07-23 | Kortec, Inc. | Apparatus for producing non-symmetric multiple layer injection molded products |
| WO2013081740A1 (en) * | 2011-10-21 | 2013-06-06 | Kortec, Inc. | Non-symmetric multiple layer injection molded products and methods |
| US9493269B2 (en) | 2011-10-21 | 2016-11-15 | Milacron Llc | Non-symmetric multiple layer injection molded products and methods |
| US8435434B1 (en) | 2011-10-21 | 2013-05-07 | Kortec, Inc. | Non-symmetric multiple layer injection molded products and methods |
| CN109177040A (en) * | 2011-10-21 | 2019-01-11 | 米拉克龙有限责任公司 | Asymmetric multi-cavity injection molding product and method |
| JP2017206024A (en) * | 2011-10-21 | 2017-11-24 | ミラクロン エルエルシー | Non-symmetric multiple layer injection molded products and injection methods |
| US20130292290A1 (en) * | 2011-10-21 | 2013-11-07 | Kortec, Inc. | Non-symmetric multiple layer injection molded products and methods |
| EP3326775A1 (en) * | 2011-10-21 | 2018-05-30 | Milacron LLC | Non-symmetric multiple layer injection molded containers, molds and methods |
| CN103998202B (en) * | 2011-10-21 | 2018-08-03 | 米拉克龙有限责任公司 | Asymmetric multi-cavity injection molding product and method |
| US10759101B2 (en) | 2014-01-24 | 2020-09-01 | Milacron Llc | Co-injection molded multi-layer article with injection-formed aperture between gate area and peripheral edge |
| US10017314B2 (en) | 2014-05-07 | 2018-07-10 | Milacron Llc | Plastic container with flexible base portion |
| CN106687379A (en) * | 2014-05-07 | 2017-05-17 | 米拉克龙有限责任公司 | Plastic container with flexible base portion |
| WO2015171876A1 (en) * | 2014-05-07 | 2015-11-12 | Kortec, Inc. | Plastic container with flexible base portion |
| CN109969609A (en) * | 2014-05-07 | 2019-07-05 | 米拉克龙有限责任公司 | Plastic containers with flexible base part |
| US10647492B2 (en) | 2014-05-07 | 2020-05-12 | Milacron Llc | Plastic container with flexible base portion |
| EP3385188A1 (en) * | 2017-04-05 | 2018-10-10 | Ipl Inc. | Container and method of fabrication thereof |
| JP2019059483A (en) * | 2017-09-22 | 2019-04-18 | 大日本印刷株式会社 | In-mold label container and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3339097B2 (en) | 2002-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103328351B (en) | The method of labelled container and production labelled container | |
| JPH06278164A (en) | Non-circular symmetric multi-layer injected container | |
| JPS629007B2 (en) | ||
| EP1523405B1 (en) | Tube, method and tool for its manufacture | |
| US6124008A (en) | Injected-molded package of blended ethylene/olefin copolymers | |
| JP5955506B2 (en) | Spout manufacturing method | |
| JPH032009A (en) | Rotary molded container and preparation thereof | |
| JPS6359850B2 (en) | ||
| JP2844977B2 (en) | Multi-layer simultaneous injection container with legs and method of manufacturing the same | |
| JP4629171B2 (en) | In-mold label container and manufacturing method thereof | |
| JPS6342564B2 (en) | ||
| JP3434684B2 (en) | Container manufacturing method and sealed container | |
| JPS646285Y2 (en) | ||
| CN109677753A (en) | A kind of EVOH high-obstruction container and preparation method thereof | |
| JP4477946B2 (en) | container | |
| JPH07186190A (en) | Multi-layered injection molded article and manufacture thereof | |
| JPS6241093B2 (en) | ||
| JP2783562B2 (en) | Plastic container and manufacturing method thereof | |
| JPS6058009B2 (en) | Multilayer container manufacturing method and molding mold | |
| JPH059245B2 (en) | ||
| JPH0712292A (en) | Vacuum heat insulating material pack | |
| JPS5924506Y2 (en) | container | |
| JPS6213768Y2 (en) | ||
| JPH04301419A (en) | Multilayer vessel with leg and manufacture thereof | |
| JPH09108084A (en) | Tableware and manufacture thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070816 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080816 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |