JPH0524146A - Multilayered container having leg and manufacture thereof - Google Patents
Multilayered container having leg and manufacture thereofInfo
- Publication number
- JPH0524146A JPH0524146A JP3187577A JP18757791A JPH0524146A JP H0524146 A JPH0524146 A JP H0524146A JP 3187577 A JP3187577 A JP 3187577A JP 18757791 A JP18757791 A JP 18757791A JP H0524146 A JPH0524146 A JP H0524146A
- Authority
- JP
- Japan
- Prior art keywords
- container
- layer
- legs
- container body
- leg
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000010410 layer Substances 0.000 claims abstract description 64
- 229920005989 resin Polymers 0.000 claims abstract description 27
- 239000011347 resin Substances 0.000 claims abstract description 27
- 238000001746 injection moulding Methods 0.000 claims abstract description 12
- 239000002356 single layer Substances 0.000 claims abstract description 12
- 230000004888 barrier function Effects 0.000 claims abstract description 11
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 11
- 239000000057 synthetic resin Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 11
- 235000013372 meat Nutrition 0.000 claims description 5
- 235000013305 food Nutrition 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 7
- -1 polypropylene Polymers 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 4
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 4
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 235000021185 dessert Nutrition 0.000 description 1
- 235000011850 desserts Nutrition 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 235000011962 puddings Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
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、特にはデザート等の食品を収納するのに好適な、
脚付き多層容器に関するものである。FIELD OF THE INVENTION The present invention is a plastic multi-layer container, which is particularly suitable for storing foods such as desserts.
The present invention relates to a multi-layer container with legs.
【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、内容物適性などの理由から、プ
ラスチックの多層容器が使用されてきている。この種の
多層容器の一般的な成形法としては、多種のプラスチッ
クフィルムを積層したシートを真空成形法、圧空成形法
等により、カップ容器状にするものがある。また、プリ
ン、コーヒーゼリー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、脚付
き形状の容器が望まれるところなのではあるが、前述の
真空成形法、圧空成形法等により、シートから成形する
ことは極めて困難である。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. As a general molding method of this kind of multilayer container, there is a method of forming a sheet in which various plastic films are laminated into a cup container shape by a vacuum molding method, a pressure molding method or the like. Also, for dessert foods such as pudding and coffee jelly, from the viewpoint of appearance design or ease of holding, a container with legs is desired, but the aforementioned vacuum forming method, pressure forming method, etc. Therefore, it is extremely difficult to form the sheet.
【０００３】これらに対して、射出成形法では脚付きの
容器を成形することが可能であることから、現在でもそ
れによる成形法が数多く使用されてはいる。しかしなが
ら、それらの射出成形法による脚付き容器は、ただ単に
プラスチックの単層容器であり、ガスバリヤー性や、内
容物適性の観点からは、いまだ不充分なものでしかない
という問題があった。On the other hand, in the injection molding method, a container with legs can be molded. Therefore, many molding methods based on the method are still used. However, the legged containers produced by these injection molding methods are merely plastic single-layer containers, and there is a problem that they are still insufficient from the viewpoint of gas barrier properties and suitability for contents.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、食品等を内
容物として収納する容器において、容器本体が２種３
層、あるいは３種５層であり、脚が容器本体と同時に成
形される脚付き多層容器を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention relates to a container for storing foods or the like as contents, and the container main body is of two types 3
It is an object of the present invention to provide a multi-layer container with legs, which is a layer, or 5 layers of 3 types, and legs are molded at the same time as the container body.
【０００５】[0005]
【課題を解決する手段】本発明は、上記問題点を鑑みて
なされたものであり、内容物を収納する容器において、
ガスバリヤー性樹脂層を含む少なくとも合成樹脂が３層
以上の容器本体の下方に、単層の合成樹脂よりなる脚部
を有する脚付き多層容器を提供する。また、脚部も３層
以上の合成樹脂よりなる、前記脚付き多層容器も提供で
きる。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and provides a container for storing contents.
Provided is a multi-layer container with legs having a leg portion made of a single-layer synthetic resin under a container body having at least three layers of synthetic resin including a gas barrier resin layer. Further, it is possible to provide the multi-layer container with legs, in which the legs are also made of three or more layers of synthetic resin.
【０００６】そして、その製造方法として、該脚付き多
層容器の、脚部と容器本体とを、射出成形法により同時
に形成する方法により製造する。さらに、前記の射出成
形法により形成する場合は、金型の脚部分岐部の厚み形
状比率が、脚部付け根の肉圧は、容器本体の側壁及び底
面の肉圧に対して１．４倍以上あり、好ましくは１．８
倍以上である。また、脚部付け根の丸み部は、曲率半径
Ｒが容器本体の底面の肉圧に対して０．１５倍以上あ
り、好ましくは０．２５倍以上であるものにより製造す
る。As a manufacturing method thereof, the multi-layer container with legs is manufactured by simultaneously forming the legs and the container body by injection molding. Further, in the case of forming by the above-mentioned injection molding method, the thickness / shape ratio of the leg branch portion of the mold is such that the meat pressure at the base of the leg is 1.4 times or more the meat pressure at the side wall and bottom surface of the container body. Yes, preferably 1.8
More than double. The radius of curvature of the leg root is 0.15 times or more, and preferably 0.25 times or more, of the wall pressure of the bottom surface of the container body.
【０００７】以下に、本発明の構成を図面を用いて説明
する。図１は、本発明による脚付き多層容器の一実施例
を示す断面図である。ここで、容器本体１０は、中心層
としてエチレン酢酸ビニル共重合体ケン化物（以下これ
をＥＶＯＨと称す）などからなるガスバリヤー性樹脂層
３、また、最内外層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やポリスチレン樹脂などか
らなる基材層１、そして、前述のガスバリヤー性樹脂層
３と最内外層とを接着するための、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
脂などからなる接着剤層２により、層構成として３種５
層からなる構造を有している。一方、容器本体の下方に
位置するリング状の脚部７は、前述のように最内外層で
もある基材層１と、同一の樹脂により単層で構成され
る。The structure of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a multi-layer container with legs according to the present invention. Here, the container main body 10 has a gas barrier resin layer 3 made of a saponified ethylene vinyl acetate copolymer (hereinafter referred to as EVOH) as a central layer, and also has content suitability or strength suitability as an innermost and outermost layer. A base material layer 1 made of a polypropylene resin or a polystyrene resin having certain properties, and a maleic acid graft modified polypropylene resin as a polypropylene modified resin for adhering the gas barrier resin layer 3 and the innermost and outermost layers. Adhesive layer 2 provides 3 types of layer structure 5
It has a structure composed of layers. On the other hand, the ring-shaped leg portion 7 located below the container body is made of a single layer of the same resin as the base material layer 1 which is also the innermost and outermost layer as described above.
【０００８】ここで、この脚付き多層容器を多層の射出
成形法によって製造する方法の一実施例を説明する。図
２はこの方法を説明するための、多層用の射出成形機の
ノズル周辺の概略図である。このノズルには５つの流入
口から５本の流路１ａ、１ｂ、２ａ、２ｂ、３が設けら
れてある。これらの流路には、それぞれに射出ユニット
が接続されてある。そして、それらはいずれも中央流路
で合流し、雄型４１と雌型４２とで形成されるキャビテ
ィ５に通じている。押出ピン６は、中央流路に進退の摺
動が自在に可能なように挿入されたものである。An embodiment of a method for manufacturing the multi-layer container with legs by the multi-layer injection molding method will be described below. FIG. 2 is a schematic view around a nozzle of a multi-layer injection molding machine for explaining this method. This nozzle is provided with five flow paths 1a, 1b, 2a, 2b, 3 from five inflow ports. An injection unit is connected to each of these flow paths. All of them merge in the central flow path and communicate with the cavity 5 formed by the male die 41 and the female die 42. The push-out pin 6 is inserted in the central flow path so that it can freely slide back and forth.
【０００９】図３は、脚部分岐部の様子を示すもので、
ｔ１、ｔ２、およびｔ３はそれぞれ次の箇所の肉厚を示
す。ｔ１は容器本体の側壁、ｔ２は容器本体の底面であ
り、ｔ３は脚部のものである。これらの肉圧や形状の比
率は、容器本体下方に位置する脚部を単層により構成さ
せる場合に特に重要である。FIG. 3 shows the state of the leg bifurcation.
Each of t1, t2, and t3 indicates the wall thickness at the next location. t1 is a side wall of the container body, t2 is a bottom surface of the container body, and t3 is a leg portion. These wall pressures and shape ratios are particularly important when the legs located below the container body are made of a single layer.
【００１０】容器底面側の脚部分岐部における曲率半径
のアール４３を大きく取ることが肝要で、容器本体側壁
面の肉厚よりさらに厚くなるよう脚部付け根がテーパー
形状を呈する目的から適切な形状や寸法が特定される。
つまり、前記のように、脚部付け根の肉圧は、容器本体
の側壁及び底面の肉圧に対して１．４倍以上あり、好ま
しくは１．８倍以上である。また、脚部付け根の丸み
は、曲率半径のアール４３が容器本体の底面の肉圧に対
して０．１５倍以上あり、好ましくは０．２５倍以上で
あるものが望まれる。It is important that the radius 43 of the radius of curvature at the leg branch portion on the bottom surface side of the container is large, and the leg base has a tapered shape so as to be thicker than the wall thickness of the container body side wall. The dimensions are specified.
That is, as described above, the meat pressure at the base of the leg is 1.4 times or more, and preferably 1.8 times or more, that of the side wall and the bottom surface of the container body. Further, it is desired that the roundness of the leg base is such that the radius 43 of the radius of curvature is 0.15 times or more, and preferably 0.25 times or more, of the wall thickness of the bottom surface of the container body.
【００１１】図４は、本発明による脚付き多層容器のそ
の他の実施例を示す断面図である。この場合は脚部が容
器本体と同様に、層構成として３種５層からなる構造を
有している。FIG. 4 is a sectional view showing another embodiment of the multi-layer container with legs according to the present invention. In this case, the leg portion has a layered structure of 5 layers of 3 types, as in the case of the container body.
【００１２】[0012]
【作用】本発明を用いることにより、以下のような作用
が生じる。すなわち、前述の押出ピン６は、中央流路を
自在に進退することにより各流路１ａ、１ｂ、２ａ、２
ｂ、３の中央流路を開閉する。まず流路１ａ及び１ｂに
ついては、これらから、成形品の最内外層を構成する合
成樹脂を射出し、流路２ａ、２ｂについては、中間の接
着剤層を射出し、また流路３については、中心層を構成
する樹脂を射出する。これらにより、このノズルは中央
流路において、１ａから流入した樹脂の周囲に、順に２
ｂ、３、２ａ、１ｂが同心円を形成するように積層でき
るしくみになっている。The following effects occur by using the present invention. That is, the above-mentioned push-out pin 6 freely moves back and forth in the central flow path to thereby form the flow paths 1a, 1b, 2a, 2
Open and close the central channels b and 3. First, for the channels 1a and 1b, a synthetic resin forming the innermost and outermost layers of the molded article is injected from these, for the channels 2a and 2b, an intermediate adhesive layer is injected, and for the channel 3, , The resin that constitutes the central layer is injected. As a result, in the central flow path, this nozzle is provided with 2 in order around the resin flowing from 1a.
b, 3, 2a, and 1b can be stacked so as to form concentric circles.
【００１３】そこでこのノズルにより、本発明に係る成
形品を成形するには、まず流路１ｂ、もしくは１ｂと１
ａとを開いて中央流路に最内外層を構成する樹脂のみを
射出し、ついで流路２ａ、２ｂ、および３を開いて、中
央から順に１ａ、２ｂ、３、２ａ、１ｂの流路を通って
流入した樹脂が積層された同心円状の樹脂流を形成す
る。この状態で各流路１ａ、１ｂ、２ａ、２ｂ、３に接
続された射出ユニットの射出圧力によりキャビィ５中へ
向けて溶融した樹脂が流入する。これらの樹脂流は最初
は単層であり、ついで５層になる。得られる成形品は表
裏対称の５層の成形品である。Therefore, in order to mold the molded article according to the present invention with this nozzle, first, the flow path 1b or 1b and 1 is used.
a and open only the resin forming the innermost and outermost layer into the central flow path, then open the flow paths 2a, 2b, and 3 to sequentially open the flow paths 1a, 2b, 3, 2a, and 1b from the center. A concentric resin flow is formed by laminating the resin flowing in through. In this state, the molten resin flows into the cavity 5 by the injection pressure of the injection unit connected to each of the flow paths 1a, 1b, 2a, 2b and 3. These resin streams are initially monolayer and then 5 layers. The obtained molded product is a 5-layer molded product having symmetrical front and back surfaces.
【００１４】ここで、通常は射出成形機のノズルからの
溶融樹脂がこの底面のｔ２側から流入して、側壁のｔ１
の側、および脚部のｔ３の側へと充填がすすむ。Here, usually, the molten resin from the nozzle of the injection molding machine flows in from the t2 side of the bottom surface and t1 of the side wall.
Filling proceeds to the side of t and the side of t3 of the leg.
【００１５】この様にすることにより、最初にキャビテ
ィ５に流入する単層の樹脂流は脚部７に流れ込み、脚部
が単層により形成されることが可能となる。ついで流入
する５層の樹脂流は、すでに樹脂の充填が完了した脚部
７には流入することなく容器本体部分へと流れ込む。By doing so, the resin flow of the single layer that first flows into the cavity 5 flows into the leg portion 7, and the leg portion can be formed by the single layer. Then, the inflowing five layers of resin flow into the container main body portion without flowing into the leg portion 7 already filled with the resin.
【００１６】[0016]
【実施例】本発明の具体的実施例として、図２に示すノ
ズルを使用し、多層射出成形法により表裏対称５層構造
の脚付き容器を成形した。すなわち、最内外層１として
メルトインデックス（ＭＩ）が１５のポリプロピレン樹
脂、中間層にＥＶＯＨ、外層とＥＶＯＨ層との接着剤
層、内層とＥＶＯＨ層との接着剤層として、マレイン酸
グラフト変性ポリプロピレン樹脂を使用し、いずれの樹
脂も樹脂温度２４０℃、金型温度は４０℃で成形した。EXAMPLE As a concrete example of the present invention, a legged container having a front and back symmetrical five-layer structure was molded by a multilayer injection molding method using the nozzle shown in FIG. That is, a polypropylene resin having a melt index (MI) of 15 as the innermost and outermost layer 1, EVOH as an intermediate layer, an adhesive layer between the outer layer and the EVOH layer, and a maleic acid graft modified polypropylene resin as an adhesive layer between the inner layer and the EVOH layer. All the resins were molded at a resin temperature of 240 ° C and a mold temperature of 40 ° C.
【００１７】得られた成形品は、脚部がポリプロピレン
単層、容器本体部分が５層で、肉厚は０．８ｍｍ、容器
満水容量は１５２ｍｌである。なお、各層の平均肉厚
は、外層及び内層が厚さ２００μｍ、接着剤層が厚さ１
７０μｍ、そして中間層が厚さ６０μｍである。この脚
付き多層容器をアルミニウム製蓋材で密封し、酸素透過
率を測定したところ０．００７ｃｃ／ｐａｃｋ・ｄａｙ
であった。The obtained molded product had a polypropylene single layer for the legs, five layers for the container body, a wall thickness of 0.8 mm, and a container full capacity of 152 ml. The average thickness of each layer is 200 μm for the outer and inner layers and 1 for the adhesive layer.
70 μm, and the intermediate layer is 60 μm thick. This multi-layer container with legs was sealed with an aluminum lid and the oxygen permeability was measured to be 0.007 cc / pack · day.
Met.
【００１８】比較のために、ポリプロピレン樹脂のみを
使用して同一の容器を射出成形したところ、酸素透過率
は０．３５０ｃｃ／ｐａｃｋ・ｄａｙであった。For comparison, when the same container was injection-molded using only polypropylene resin, the oxygen permeability was 0.350 cc / pack.day.
【００１９】また、この脚付き多層容器に水道水を充填
しヒートシール蓋材にて密封し５℃の環境下で保存した
後、８０ｃｍの高さより床面へ正立落下試験を行ったと
ころ３回の落下において水漏れ及び容器の破壊は認めら
れず、実用に充分耐えうる強度を有していることが判明
した。Further, this multi-layer container with legs was filled with tap water, sealed with a heat-sealing lid material, stored in an environment of 5 ° C., and then subjected to an upright drop test from the height of 80 cm to a floor surface. No water leakage or breakage of the container was observed after repeated drops, and it was found that the product has sufficient strength for practical use.
【００２０】[0020]
【発明の効果】本発明の脚付き多層容器およびその製造
方法によれば、容器本体にガスバリヤー性に優れた合成
樹脂を使用することにより、内容物保存適性に優れてい
るばかりでなく、脚部を有していることから外観上のデ
ザインの良さ、あるいは持ち易さという点で大きな効果
がある。また脚部は合成樹脂を用いて射出成形法によ
り、容器本体と同時に成形されるため、生産性を高める
ことができる。そのうえさらに、ガスバリヤー性樹脂及
び接着剤用樹脂は高価なため、ガスバリヤー性を必要と
しない脚部を最内外層をなす基材層と同一の樹脂のみに
より、単層の構成にした場合は、材料の節減となりコス
トの上昇をも抑えた脚付き多層容器を提供することが出
来る。EFFECTS OF THE INVENTION According to the multi-layer container with legs of the present invention and the method for producing the same, the use of a synthetic resin having excellent gas barrier properties in the container body not only provides excellent storage suitability for contents, but also legs. Since it has a part, it has a great effect in terms of good external design and easy holding. Moreover, since the legs are molded at the same time as the container body by injection molding using a synthetic resin, the productivity can be improved. In addition, since the gas barrier resin and the adhesive resin are expensive, when the legs that do not require gas barrier properties are made of a single layer of the same resin as the base material layer forming the innermost and outermost layers, Thus, it is possible to provide a multi-layer container with legs which saves the material and suppresses the cost increase.
【００２１】[0021]
【図１】本発明の脚付き多層容器の一実施例を示す断面
図である。FIG. 1 is a cross-sectional view showing an embodiment of a multi-layer container with legs of the present invention.
【図２】本発明の多層射出成形法を示す概略の断面図で
ある。FIG. 2 is a schematic sectional view showing a multilayer injection molding method of the present invention.
【図３】本発明の脚部分岐部を示す説明図である。FIG. 3 is an explanatory view showing a leg branch portion of the present invention.
【図４】本発明の脚付き多層容器のその他の実施例を示
す断面図である。FIG. 4 is a sectional view showing another embodiment of the multi-layer container with legs of the present invention.
１・・・基材層 ２・・・接着剤層 ３・・・ガスバリヤー層 ５・・・キャビティ ６・・・押出しピン ７・・・脚部 １０・・・容器本体 ４１・・・雄型 ４２・・・雌型 1 ... Base material layer 2 ... Adhesive layer 3 ... Gas barrier layer 5 ... Cavity 6 ... Extrusion pin 7 ... legs 10 ... Container body 41 ... Male 42 ... female type
Claims (4)
ヤー性樹脂層を含んで少なくとも合成樹脂が３層以上の
容器本体であって、下方に単層の合成樹脂よりなる脚部
を有することを特徴とする脚付き多層容器。1. A container for accommodating contents, wherein the container body includes at least three layers of synthetic resin including a gas barrier resin layer, and has a lower leg portion made of a single layer of synthetic resin. A characteristic multi-layer container with legs.
特徴とする、請求項１に記載の脚付き多層容器。2. The multi-layer container with legs according to claim 1, wherein the legs are made of three or more layers of synthetic resin.
時に成形できることを特徴とする、請求項１または２に
記載の脚付き多層容器の製造方法。3. The method for producing a multi-layer container with legs according to claim 1, wherein the leg portion and the container body can be simultaneously molded by an injection molding method.
付け根の肉圧は、容器本体の側壁及び底面の肉圧に対し
て１．４倍以上あり、好ましくは１．８倍以上であるこ
と。また、脚部付け根の丸み部は、曲率半径Ｒが容器本
体の底面の肉圧に対して０．１５倍以上あり、好ましく
は０．２５倍以上であることを特徴とする、請求項３に
記載の脚付き多層容器の製造方法。4. The thickness / shape ratio of the leg branch portion of the mold is such that the meat pressure at the base of the leg is 1.4 times or more, and preferably 1.8 times, the meat pressure at the side wall and the bottom surface of the container body. That is all. The radius of curvature R of the rounded portion of the leg base is 0.15 times or more, and preferably 0.25 times or more, of the wall thickness of the bottom surface of the container body. A method for manufacturing the multi-layer container with legs described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18757791A JP2844977B2 (en) | 1991-07-26 | 1991-07-26 | Multi-layer simultaneous injection container with legs and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18757791A JP2844977B2 (en) | 1991-07-26 | 1991-07-26 | Multi-layer simultaneous injection container with legs and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0524146A true JPH0524146A (en) | 1993-02-02 |
| JP2844977B2 JP2844977B2 (en) | 1999-01-13 |
Family
ID=16208538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18757791A Expired - Fee Related JP2844977B2 (en) | 1991-07-26 | 1991-07-26 | Multi-layer simultaneous injection container with legs and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2844977B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002016130A1 (en) * | 2000-08-25 | 2002-02-28 | Huhtamaki Van Leer Ltd. | Microwaveable long life containers |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167442A (en) * | 1980-05-30 | 1981-12-23 | Dainippon Printing Co Ltd | Multilayer drawn bottle and its manufacture |
| JPS6193041A (en) * | 1984-10-01 | 1986-05-12 | 吉村化成株式会社 | Vessel with leg and manufacture thereof |
| JPS6257495A (en) * | 1985-09-06 | 1987-03-13 | 日本油脂株式会社 | Drycleaning detergent composition |
| JPH02202413A (en) * | 1989-02-01 | 1990-08-10 | Dainippon Printing Co Ltd | Manufacture of multi-layer vessel |
| JPH0321417A (en) * | 1989-06-19 | 1991-01-30 | Dainippon Printing Co Ltd | Vessel with barrier property and its manufacture |
-
1991
- 1991-07-26 JP JP18757791A patent/JP2844977B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167442A (en) * | 1980-05-30 | 1981-12-23 | Dainippon Printing Co Ltd | Multilayer drawn bottle and its manufacture |
| JPS6193041A (en) * | 1984-10-01 | 1986-05-12 | 吉村化成株式会社 | Vessel with leg and manufacture thereof |
| JPS6257495A (en) * | 1985-09-06 | 1987-03-13 | 日本油脂株式会社 | Drycleaning detergent composition |
| JPH02202413A (en) * | 1989-02-01 | 1990-08-10 | Dainippon Printing Co Ltd | Manufacture of multi-layer vessel |
| JPH0321417A (en) * | 1989-06-19 | 1991-01-30 | Dainippon Printing Co Ltd | Vessel with barrier property and its manufacture |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002016130A1 (en) * | 2000-08-25 | 2002-02-28 | Huhtamaki Van Leer Ltd. | Microwaveable long life containers |
| GB2382051A (en) * | 2000-08-25 | 2003-05-21 | Huhtamaki Van Leer Ltd | Microwaveable long life containers |
| GB2382051B (en) * | 2000-08-25 | 2003-12-31 | Huhtamaki Van Leer Ltd | Microwaveable long life containers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2844977B2 (en) | 1999-01-13 |
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