JPH0195011A - Manufacture of container - Google Patents
Manufacture of containerInfo
- Publication number
- JPH0195011A JPH0195011A JP62252114A JP25211487A JPH0195011A JP H0195011 A JPH0195011 A JP H0195011A JP 62252114 A JP62252114 A JP 62252114A JP 25211487 A JP25211487 A JP 25211487A JP H0195011 A JPH0195011 A JP H0195011A
- Authority
- JP
- Japan
- Prior art keywords
- wall film
- synthetic resin
- peripheral wall
- peripheral
- bottom wall
- 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 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 58
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 37
- 239000000057 synthetic resin Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- -1 polypropylene Polymers 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 239000011888 foil Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000004927 fusion Effects 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は合成樹脂を使用し、例えば食品の保存に適した
容器を製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of manufacturing containers suitable for storing food, for example, using synthetic resin.
ｒ従来の技術及び問題点］
従来、この種容器の製造方法としては、耐熱性合成樹脂
で予め成形された筒状本体の開口端部に凸部を設け、熱
融着によりこの凸部を溶融させながら金属箔にラミネー
トされた合成樹脂製の底壁フィルムを接着させる方法が
知られている。しかしながらこの方法によると、融着工
程において合成樹脂本体の端部を均一に加熱することが
難しく、融着むらが生じ易い。その結果、筒状本体と合
成樹脂フィルムとの接着は不十分となり、フィルムが剥
離し易くなったり、また接着部分にリークが生じ易くな
る。これを解決しようとして筒状本体の開口端部にリム
を設けて融着面積を増大させて接着強度を向上させるこ
とも行われているが、なお満足できるものではない。rPrior art and problems] Conventionally, as a manufacturing method for this type of container, a convex portion is provided at the open end of a cylindrical body pre-formed from a heat-resistant synthetic resin, and the convex portion is melted by heat fusion. A method is known in which a bottom wall film made of synthetic resin laminated with metal foil is adhered to the metal foil while the metal foil is moved. However, according to this method, it is difficult to uniformly heat the ends of the synthetic resin body in the fusion step, and uneven fusion tends to occur. As a result, the adhesion between the cylindrical body and the synthetic resin film becomes insufficient, making it easy for the film to peel off or for leaks to occur at the bonded portion. In an attempt to solve this problem, attempts have been made to provide a rim at the open end of the cylindrical body to increase the fusion area and improve the adhesive strength, but this is still not satisfactory.
したがって、本発明の目的は、筒状本体と底部材である
合成樹脂製底壁フィルムとの接触強度が強く、底壁フィ
ルムの剥離やリーク発生の問題を生じることのない容器
を製造する方法を提供することにある。Therefore, an object of the present invention is to provide a method for manufacturing a container in which the contact strength between the cylindrical body and the synthetic resin bottom wall film that is the bottom member is strong, and the problems of peeling of the bottom wall film and leakage do not occur. It is about providing.
［問題を解決するための手段］
本発明の製造方法は、雄型とこの雄型が挿入される雌型
との周壁に、少なくとも外周面が合成樹脂製の筒状フィ
ルムの周壁フィルムを配置し、この周壁フィルムの底面
と接触し、且つ周縁が周壁フィルムの底面より外方に延
出するようにして雄型と雌型の底部間に少なくとも周縁
の一面が合成樹脂製の底壁フィルムを配置した後この雄
型と周壁フィルムとの間に合成樹脂を注入し固化して前
記底壁フィルムの周縁ならびに周壁フィルムの外面に融
着した合成樹脂性の補強筒体を形成することを特徴とす
る。[Means for Solving the Problem] The manufacturing method of the present invention includes arranging a peripheral wall film of a cylindrical film having at least an outer peripheral surface made of synthetic resin on the peripheral wall of a male mold and a female mold into which the male mold is inserted. A bottom wall film, at least one side of which is made of synthetic resin, is arranged between the bottoms of the male mold and the female mold so as to be in contact with the bottom surface of the peripheral wall film and whose peripheral edge extends outward from the bottom surface of the peripheral wall film. After that, a synthetic resin is injected between the male die and the peripheral wall film and solidified to form a synthetic resin reinforcing cylinder fused to the peripheral edge of the bottom wall film and the outer surface of the peripheral wall film. .
本発明の周壁及び底壁フィルムには、合成樹脂シート単
独、または複数の合成樹脂シートの多層シート、または
合成樹脂シートと他の材質、例えば金属箔とをラミネー
トした多層シートを用いることができる。前記多層シー
トはガスバリヤ−性の高い合成樹脂もしくは金属箔を中
間層とし、ポリプロビレ、ン（ＰＰ）もしくはポリエチ
レン（ＰＥ”）を夫々外層または内層としてラミネート
したガスバリヤ−性多層シートが好ましい。底壁フィル
ムとしては、ポリエチレンテレフタレート（ＰＥＴ）
、二輪延伸ナイロン６（ＯＮ）、無延伸ポリプロピレン
（ＣＰＰ） 、もしくはアルミニウム（Ａ１）を内層に
用いた多層シートが好ましく、特にＡ１を用いたものが
望ましい。周壁フィルムにとしては内層として塩化ビニ
リデン共重合体（ＰＶＤＣ） 、エチレン・ビニルアル
コール共重合体（ＥＶＯＨ） 、アクリロニトリル共重
合体（ＰＡＮ）、二輪延伸ナイロン（ＯＮ＞等の合成樹
脂を用いた多層シートが好ましく、金属箔としてはアル
ミニウム、鉄、銅が好ましい。雌型と周壁フィルムの間
に注入される合成樹脂はポリプロピレンもしくはポリエ
チレンが好ましい。前記合成樹脂とバリヤー性多層シー
トの融着面の合成樹脂は同じものが好ましい。For the peripheral wall and bottom wall films of the present invention, a single synthetic resin sheet, a multilayer sheet of a plurality of synthetic resin sheets, or a multilayer sheet obtained by laminating a synthetic resin sheet and another material such as metal foil can be used. The multilayer sheet is preferably a gas barrier multilayer sheet in which a synthetic resin or metal foil with high gas barrier properties is used as an intermediate layer, and polypropylene (PP) or polyethylene (PE'') is laminated as an outer layer or an inner layer, respectively.Bottom wall film As polyethylene terephthalate (PET)
, two-wheel stretched nylon 6 (ON), unstretched polypropylene (CPP), or aluminum (A1) as an inner layer are preferred, and those using A1 are particularly preferred. For the peripheral wall film, the inner layer is a multilayer sheet using synthetic resins such as vinylidene chloride copolymer (PVDC), ethylene vinyl alcohol copolymer (EVOH), acrylonitrile copolymer (PAN), two-wheel oriented nylon (ON), etc. is preferable, and the metal foil is preferably aluminum, iron, or copper.The synthetic resin injected between the female mold and the peripheral wall film is preferably polypropylene or polyethylene.The synthetic resin on the fusion surface of the synthetic resin and the barrier multilayer sheet are preferably the same.
［実施例］
第１図に示すように、円形カップ状の雌型１の平坦な底
面１ａに、これに沿って、これの内径よ 。[Example] As shown in FIG. 1, a circular cup-shaped female mold 1 is molded along its inner diameter along the flat bottom surface 1a.
りも少し小径の円形の底壁フィルム３を位置させる。こ
の底壁フィルム３は上面の周縁が合成樹脂で形成されて
いれば、他の箇所は用途に応じて種々選択され得、例え
ば、ボリブＯピレン／アルミニウム／ボリプＯピレン層
からなる多層のシートで形成され得る。また、この円形
の底壁フィルムは、あらかじめ円形に切断したものをそ
のまま使用しても良いし、また大きなフィルムを後述す
る雄型を雌型１内に挿入することにより、これら型にて
円形に切断するようにしても良い。A circular bottom wall film 3 with a slightly smaller diameter is placed on the bottom wall. This bottom wall film 3 may be formed of a multilayer sheet consisting of a volip-O-pyrene/aluminum/volip-O-pyrene layer, as long as the upper surface periphery is made of synthetic resin, and other parts can be selected depending on the application. can be formed. In addition, this circular bottom wall film may be cut into a circular shape in advance and used as is, or by inserting a large film into a male mold (to be described later) into the female mold 1, the film can be cut into a circular shape using these molds. It may also be cut.
次に、上記雌型１に、その周壁に沿って両端が開口した
周壁フィルム４を、その底面が前記底壁フィルム３の上
面と当接し、かつ外周面が雌型１の内周面と一定間隔を
有して離間するように、位置させる。また、この周壁フ
ィルム４の外径は、上記底壁フィルム３の径よりも少し
小さく設定されており、底壁フィルム３の周縁３ａが周
壁フィルム４の外面より僅かに延出される。この底壁フ
ィルム３の周縁の延出量は、前記周壁フィルム４の雌型
１との間の間隔とほぼ等しいことが望ましいが必ずしも
これに限定されるものではない。この周壁フィルム４は
外層面が合成樹脂で形成されていれば、他の箇所は用途
に応じて種々選定され得、例えば、ポリプロピレン／ア
ルミニウム／ポリプロピレン層よりなる多層シートで形
成される。Next, a peripheral wall film 4 whose both ends are open along the peripheral wall of the female mold 1 is placed so that its bottom surface is in contact with the top surface of the bottom wall film 3 and its outer peripheral surface is flush with the inner peripheral surface of the female mold 1. They are positioned so as to be spaced apart from each other. Further, the outer diameter of the peripheral wall film 4 is set to be slightly smaller than the diameter of the bottom wall film 3, and the peripheral edge 3a of the bottom wall film 3 extends slightly from the outer surface of the peripheral wall film 4. The amount of extension of the peripheral edge of the bottom wall film 3 is desirably approximately equal to the distance between the peripheral wall film 4 and the female die 1, but is not necessarily limited to this. As long as the outer layer surface of the peripheral wall film 4 is made of synthetic resin, the other parts can be selected from various methods depending on the intended use. For example, the peripheral wall film 4 is formed of a multilayer sheet made of polypropylene/aluminum/polypropylene layers.
次に、雌型１内に雄型２をこの外周面に前記周壁フィル
ム４を、雌型１内で支持するようにして挿入する。この
場合、あらかじめ雄型の外周面に周壁フィルム４を装着
しておき、これらを同時に雌型１内に挿入しても良い。Next, the male mold 2 is inserted into the female mold 1 so that the peripheral wall film 4 is supported within the female mold 1 on its outer peripheral surface. In this case, the peripheral wall film 4 may be attached to the outer peripheral surface of the male mold in advance, and these may be inserted into the female mold 1 at the same time.
次に、雄型１に設けられた注入口５より合成樹脂６を注
入し、雌型１と周壁フィルムの間に設けられた所定の間
隔とそれに接する底壁フィルムと雄型２の周縁部からな
る空間に充填させる。前記合成樹脂は周壁フィルム及び
底壁フィルムを融着させるものであればよく、底壁フィ
ルム並びに底壁フィルムの外層面と同じ合成樹脂、この
実施例ではポリプロピレンが好ましい。この合成樹脂を
固化させた後、雌型１及び雄型２を取りはずし円形カッ
プ状の容器を得る。Next, synthetic resin 6 is injected through the injection port 5 provided in the male mold 1, and the synthetic resin 6 is injected from the predetermined interval provided between the female mold 1 and the peripheral wall film, the bottom wall film in contact therewith, and the peripheral edge of the male mold 2. Fill the space. The synthetic resin may be any resin that can fuse the peripheral wall film and the bottom wall film, and is preferably the same synthetic resin as the bottom wall film and the outer layer surface of the bottom wall film, and in this example, polypropylene is preferable. After solidifying this synthetic resin, the female mold 1 and male mold 2 are removed to obtain a circular cup-shaped container.
こうして得た容器は第２図に示すように、底壁フィルム
３と周壁フィルム４を内壁とし、また周壁フィルムの外
面は固化された合成樹脂で形成された筒体により補強さ
れる。As shown in FIG. 2, the container thus obtained has an inner wall made of a bottom wall film 3 and a peripheral wall film 4, and the outer surface of the peripheral wall film is reinforced by a cylinder made of solidified synthetic resin.
このような補強筒体を形成することにより、これと周壁
フィルム４の外層と底壁フィルム３の周縁３ａとが一体
的に融着され、互いにシールされる。By forming such a reinforcing cylinder, this, the outer layer of the peripheral wall film 4, and the peripheral edge 3a of the bottom wall film 3 are integrally fused and sealed together.
［発明の効果］
本発明の製造方法においては、筒状本体と底部材である
合成樹脂製底壁フィルムとの接着強度が強く、底フィル
ムの剥離やリーク発生の問題を生じることのない容器を
製造することができる。[Effects of the Invention] The manufacturing method of the present invention provides a container that has strong adhesive strength between the cylindrical body and the synthetic resin bottom wall film that is the bottom member, and does not cause problems such as peeling of the bottom film or leakage. can be manufactured.
第１図は容器の製造途中の断面図、そして第一２図は製
造された容器の一部切欠正面図である。
１・・・雌型、２・・・雄型、３・・・底壁フィルム、
４・・・周壁フィルム、５・・・注入口、６・・・合成
樹脂。
出願人代理人 弁理士 鈴江武彦
第１０
第２図
手続補正書FIG. 1 is a sectional view of the container during manufacture, and FIG. 12 is a partially cutaway front view of the manufactured container. 1...Female type, 2...Male type, 3...Bottom wall film,
4... Peripheral wall film, 5... Inlet, 6... Synthetic resin. Applicant's agent Patent attorney Takehiko Suzue No. 10 Diagram 2 Procedure amendment
Claims (1)
とも外周面が合成樹脂製の筒状の周壁フィルムを配置す
ると共に、この周壁フィルムの底部開口を覆い、かつ周
縁が周壁フィルムの周面より外方に延出するようにして
、雌型と雄型との底部間に、少なくとも周縁の上面が合
成樹脂で形成された底壁フィルムを配置する工程と、こ
の雌型と周壁フィルムとの間に合成樹脂を注入し、固化
して、前記底壁フィルムの周縁ならびに周壁フィルムの
外周面に融着した合成樹脂製の補強筒体を形成する工程
を有する容器の製造方法。A cylindrical peripheral wall film having at least an outer peripheral surface made of synthetic resin is arranged between the peripheral walls of the male mold and the female mold into which the male mold is inserted, and the peripheral wall film covers the bottom opening of the peripheral wall film, and the peripheral edge is made of a peripheral wall film. a step of arranging a bottom wall film having at least an upper surface of the periphery formed of synthetic resin between the bottoms of the female mold and the male mold so as to extend outward from the peripheral surface of the female mold and the peripheral wall; A method for manufacturing a container comprising the step of injecting a synthetic resin between the bottom wall film and the film and solidifying it to form a reinforcing cylinder made of synthetic resin that is fused to the peripheral edge of the bottom wall film and the outer peripheral surface of the peripheral wall film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62252114A JPH0195011A (en) | 1987-10-06 | 1987-10-06 | Manufacture of container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62252114A JPH0195011A (en) | 1987-10-06 | 1987-10-06 | Manufacture of container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0195011A true JPH0195011A (en) | 1989-04-13 |
| JPH0431851B2 JPH0431851B2 (en) | 1992-05-27 |
Family
ID=17232670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62252114A Granted JPH0195011A (en) | 1987-10-06 | 1987-10-06 | Manufacture of container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0195011A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5140083A (en) * | 1988-12-27 | 1992-08-18 | Nippon Oil And Fats Co., Ltd. | Maleimide copolymer and process for preparing same |
-
1987
- 1987-10-06 JP JP62252114A patent/JPH0195011A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5140083A (en) * | 1988-12-27 | 1992-08-18 | Nippon Oil And Fats Co., Ltd. | Maleimide copolymer and process for preparing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0431851B2 (en) | 1992-05-27 |
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