JPH10296788A - Production of composite container - Google Patents

Production of composite container

Info

Publication number
JPH10296788A
JPH10296788A JP11261997A JP11261997A JPH10296788A JP H10296788 A JPH10296788 A JP H10296788A JP 11261997 A JP11261997 A JP 11261997A JP 11261997 A JP11261997 A JP 11261997A JP H10296788 A JPH10296788 A JP H10296788A
Authority
JP
Japan
Prior art keywords
container
thermoplastic resin
opening
composite container
layer
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
Application number
JP11261997A
Other languages
Japanese (ja)
Inventor
Tomoaki Takasaki
智明 高崎
Hiroo Noguchi
野口  裕雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Printing Co Ltd
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP11261997A priority Critical patent/JPH10296788A/en
Publication of JPH10296788A publication Critical patent/JPH10296788A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a composite container having good sealing properties when a lid member is placed in position. SOLUTION: A method for producing a composite container comprising the steps of placing a container main body 210 at a predetermined position inside an injection molding mold in which a bottom portion is jointed to a body portion made of a liminated material having a paper layer as a main layer and a thermoplastic resin layer provided on at least the inner side of the container at an inside lower portion thereof, and injecting fused thermoplastic resin into a cavity 130 so as at least to provide an open circumferential edge portion to fit in a lid member, wherein a gate 101 is disposed at a part of the injection molding mold excluding a fitting surface to fit in the lid member on the open circumferential edge portion.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、紙層を主体層とす
る積層材料からなるカップ状又はトレー状の容器本体の
開口部に開口周縁部を、胴部の貼合せ部に柱状保護部
を、胴部と底部との合わせ目に環状補強部を、熱可塑性
樹脂を射出成形して設けた複合容器の製造方法に関する
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cup-shaped or tray-shaped container body made of a laminated material having a paper layer as a main layer. The present invention relates to a method of manufacturing a composite container in which an annular reinforcing portion is provided at a joint between a body portion and a bottom portion by injection-molding a thermoplastic resin.

【0002】[0002]

【従来の技術】従来、ヨーグルト、果汁飲料、酒、ジャ
ムや粒状菓子などの容器として、紙層を主体層とする積
層材料を打抜き加工した扇状の胴部ブランクを筒状に巻
いて胴部とし、この胴部の下方に積層材料を打抜き加工
した円形状の底部ブランクを組み合わせ、胴部の下方周
縁と底部の周縁とを加熱状態で巻き締めしたカップ状紙
容器が使用されていた。しかし、このカップ状紙容器で
は、胴部上端の開口部に蓋材を装着したときに、胴部の
貼合せ部の段差により、十分な容器の密封性が得ること
が難しかった。
2. Description of the Related Art Conventionally, as a container for yogurt, fruit juice drink, sake, jam, granular confectionery, etc., a fan-shaped trunk blank made by punching a laminated material having a paper layer as a main layer is formed into a cylinder to form a trunk. A cup-shaped paper container in which a circular bottom blank formed by stamping a laminated material is combined below the body and the lower periphery of the body and the periphery of the bottom are tightly wound in a heated state has been used. However, in this cup-shaped paper container, it is difficult to obtain a sufficient container sealing property due to the step of the bonding portion of the body when the lid is attached to the opening at the upper end of the body.

【0003】そこで、蓋材との容器の密封性を改善する
ため、例えば特開平8−207924号公報に、カップ
状紙容器を射出成形用金型内に装填し、熱可塑性樹脂を
射出して、カップ状紙容器の胴部の上端の開口部に開口
周縁部を設ける複合容器の方法が提案されている。
Therefore, in order to improve the sealing property of the container with the lid material, for example, Japanese Patent Application Laid-Open No. 8-207924 discloses a method in which a cup-shaped paper container is loaded into an injection mold and a thermoplastic resin is injected. There has been proposed a composite container method in which an opening edge is provided at an opening at the upper end of a body of a cup-shaped paper container.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上述の
特開平8−207924号公報に記載されている方法に
おいては、開口周縁部の容器上端近傍内面に対応する部
分にゲートが設けられるため、蓋材を容器に装着したと
きに、残存するゲート跡によって十分な容器の密封性が
得られないことがあった。
However, in the method described in Japanese Patent Application Laid-Open No. 8-207924, a gate is provided at a portion corresponding to the inner surface near the upper end of the container at the periphery of the opening. When attached to a container, there were cases where sufficient sealing of the container could not be obtained due to the remaining gate marks.

【0005】本発明は、上述の従来の問題を解決するも
のであり、蓋材を装着したときに、容器の密封性が十分
な複合容器の製造方法を提供するものである。
The present invention solves the above-mentioned conventional problems, and provides a method for producing a composite container having a sufficient hermeticity when the lid is attached.

【0006】[0006]

【課題を解決するための手段】本発明の第1の発明は、
図1に示すように、紙層を主体層とし、少なくとも容器
内面側に熱可塑性樹脂層を設けた積層材料からなる胴部
の内側下方に底部を接合した容器本体(210)を、射
出成形用金型(100)内の所定の位置に装填し、キャ
ビティ(130)(雌型と雄型との空間)内に溶融熱可
塑性樹脂を射出して、前記容器本体の胴部上端の開口部
に、蓋材と嵌合する図2に示す開口周縁部(220)を
少なくとも設けた複合容器の製造方法において、前記開
口周縁部(220)の蓋材との嵌合面を除く前記射出成
形用金型の部位にゲート(101)(溶融樹脂がキャビ
ティに射出される湯口)を配置したことを特徴とする複
合容器の製造方法である。
Means for Solving the Problems A first invention of the present invention is:
As shown in FIG. 1, a container main body (210) in which a paper layer is a main layer and a bottom portion is joined to a lower portion inside and below a body portion made of a laminated material having a thermoplastic resin layer provided on at least the inner surface side of the container is used for injection molding. The resin is charged at a predetermined position in the mold (100), and the molten thermoplastic resin is injected into the cavity (130) (the space between the female mold and the male mold). In the method for manufacturing a composite container provided with at least the opening peripheral portion (220) shown in FIG. 2 to be fitted to the lid material, the injection molding metal excluding the fitting surface of the opening peripheral portion (220) with the lid material. A method for manufacturing a composite container, characterized in that a gate (101) (gate for injecting a molten resin into a cavity) is disposed at a position of a mold.

【0007】次に、本発明の第2の発明は、図1に示す
ように、紙層を主体層とし、少なくとも容器内面側に熱
可塑性樹脂層を設けた積層材料からなる胴部の内側下方
に底部を接合した容器本体(210)を、射出成形用金
型(100)内の所定の位置に装填し、キャビティ(1
30)内に溶融熱可塑性樹脂を射出して、図2に示すよ
うに、前記容器本体(210)の胴部(212)上端の
開口部(211)に蓋材と嵌合する開口周縁部(22
0)を設け、且つ胴部の内側の縦の貼合せ部に柱状保護
部(230)を設けた複合容器(200)の製造方法に
おいて、図1に示すように、前記開口周縁部の蓋材との
嵌合面を除く前記射出成形用金型の部位の1箇所又は複
数箇所に、ゲート(101)を配置したことを特徴とす
る複合容器の製造方法である。
Next, as shown in FIG. 1, the second invention of the present invention comprises a paper layer as a main layer and a thermoplastic resin layer provided on at least the inner surface side of the container. The container body (210) having the bottom joined to a predetermined position in the injection mold (100) is loaded into the cavity (1).
The molten thermoplastic resin is injected into the inside of the container 30, and as shown in FIG. 2, the opening peripheral portion (211) which fits the lid material into the opening (211) at the upper end of the body (212) of the container body (210). 22
0) and a method of manufacturing a composite container (200) in which a columnar protective portion (230) is provided in a vertical bonding portion inside a body portion, as shown in FIG. A gate (101) is arranged at one or more of the portions of the injection mold except for a fitting surface with the gate.

【0008】そして、本発明の第3の発明は、紙層を主
体層とし、少なくとも容器内面側に熱可塑性樹脂層を設
けた積層材料からなる胴部の内側下方に底部を接合した
容器本体を、射出成形用金型内の所定の位置に装填し、
キャビティ内に溶融熱可塑性樹脂を射出して、図4に示
すように、前記容器本体(210)の胴部(212)上
端の開口部(211)に蓋材と嵌合する開口周縁部(2
20)を設け、胴部の内側の縦の貼合せ部に柱状保護部
(230)を設け、且つ胴部と底部(214)との合わ
せ目に環状補強部(240)を設けた複合容器(20
0)の製造方法において、前記開口周縁部の蓋材との嵌
合面を除く前記射出成形用金型の部位の1箇所又は複数
箇所に、ゲートを配置したことを特徴とする複合容器の
製造方法である。
[0008] The third invention of the present invention is to provide a container body having a paper layer as a main layer and a bottom portion joined to a lower portion inside a body portion made of a laminated material having a thermoplastic resin layer provided on at least an inner surface side of the container. , Loaded into a predetermined position in the injection mold,
The molten thermoplastic resin is injected into the cavity, and as shown in FIG. 4, an opening peripheral portion (2) that fits with the lid material is inserted into the opening (211) at the upper end of the body (212) of the container body (210).
20), a column-shaped protective portion (230) is provided on a vertical bonding portion inside the body portion, and an annular reinforcing portion (240) is provided at a joint between the body portion and the bottom portion (214). 20
0) In the manufacturing method of 0), a gate is disposed at one or more of the injection molding die portions except for a fitting surface of the peripheral portion of the opening with the lid material, wherein a gate is disposed. Is the way.

【0009】[0009]

【作用】本発明の製造方法においては、射出成形用金型
のゲートが、開口周縁部の蓋材との嵌合面を除く部位に
配置されており、製造された複合容器の胴部上端の開口
部に設けられた開口周縁部の蓋材との嵌合面には、残存
するゲート跡がなく平滑であるため、蓋材を装着したと
きに、容器の密封性が十分に得られる。
In the manufacturing method of the present invention, the gate of the injection molding die is disposed at a portion of the periphery of the opening other than the fitting surface with the lid member, and the upper end of the body of the manufactured composite container is provided. The fitting surface of the peripheral edge of the opening provided in the opening with the lid is smooth without any remaining gate marks, so that when the lid is mounted, the container is sufficiently sealed.

【0010】[0010]

【発明の実施の形態】本発明の複合容器の製造方法は、
まず、紙層を主体層とし、少なくとも容器内面側に熱可
塑性樹脂層を設けた積層材料を打抜き加工して、例えば
扇状の胴部ブランクと円形状の底部ブランクを作製し、
胴部ブランクを筒状に巻いて胴部とし、この胴部の下方
に底部ブランクを組み合わせ、胴部の下方周縁と底部の
周縁とを加熱状態で巻き締めして胴部と底部とを一体化
してカップ状の容器本体を作製し、この容器本体(21
0)を、図1に示すように、射出成形機に取り付けられ
た雌型(110)と雄型(120)とからなる射出成形
用金型(100)の所定の位置に装填し、キャビティ
(130)内にゲート(101)から溶融熱可塑性樹脂
を射出して、図2に示す胴部(212)上端の開口部
(211)に蓋材と嵌合する開口周縁部(220)を少
なくとも設けるものであり、更には、図2又は図3に示
す胴部(212)の内側の縦の貼合せ部(213)に開
口周縁部(220)に連続する柱状保護部(230)
を、また、図4に示す胴部(212)と底部(214)
との合わせ目に柱状保護部(230)と連続する環状補
強部(240)を設けるものである。そして、射出成形
金型に設けるゲートの位置は、開口周縁部の蓋材との嵌
合面を除く部位に1箇所(例えば、図1に示す)又は複
数箇所に配置するものである。
BEST MODE FOR CARRYING OUT THE INVENTION The method for producing a composite container according to the present invention comprises:
First, a paper layer as a main layer, punching a laminated material provided with a thermoplastic resin layer at least on the inner surface side of the container, for example, to produce a fan-shaped body blank and a circular bottom blank,
The trunk blank is rolled into a cylinder to form a trunk, and the bottom blank is combined below the trunk, and the lower periphery of the trunk and the periphery of the bottom are tightened in a heated state to integrate the trunk and the bottom. To produce a cup-shaped container body, and this container body (21
1) is loaded into a predetermined position of an injection mold (100) composed of a female mold (110) and a male mold (120) attached to an injection molding machine as shown in FIG. The molten thermoplastic resin is injected from the gate (101) into the inside (130), and at least the opening peripheral part (220) to be fitted with the lid material is provided in the opening (211) at the upper end of the body part (212) shown in FIG. Further, a columnar protective portion (230) connected to the opening peripheral portion (220) at the vertical bonding portion (213) inside the trunk portion (212) shown in FIG. 2 or FIG.
And the trunk (212) and bottom (214) shown in FIG.
An annular reinforcing portion (240) that is continuous with the columnar protective portion (230) is provided at the joint. The position of the gate provided in the injection molding die is one (for example, as shown in FIG. 1) or a plurality of positions in a portion other than the fitting surface of the peripheral portion of the opening with the lid material.

【0011】なお、複合容器の形状は、容器の目的に応
じて適宜の形状がとれ、カップ状でもトレー状でも良
く、図5に示すように、胴部が垂直な形状のものでも良
い。また、開口周縁部を設ける容器本体の胴部上端の形
状は、図2に示す胴部の延長形状でも、図6(a)に示
す外側へ広がる形状でも、または、図6(b)に示すカ
ール形状でも良い。
The shape of the composite container can be appropriately selected according to the purpose of the container, and may be cup-shaped or tray-shaped, or may have a vertical body as shown in FIG. Further, the shape of the upper end of the body portion of the container body provided with the opening peripheral portion may be an extended shape of the body portion shown in FIG. 2, a shape expanding outward as shown in FIG. 6A, or a shape shown in FIG. It may be curled.

【0012】また、カップ本体に開口周縁部、柱状保護
部及び環状補強部の形成する熱可塑性樹脂は、容器本体
の内面の熱可塑性樹脂層に熱接着性を有するものなら容
器の目的に応じて適宜の樹脂を選択して用いることがで
き、通常の使用では、ポリオレフィンなどの汎用樹脂を
用い、特に内容物の保護性を考慮する場合には、エチレ
ン・ビニルアルコール共重合体、ポリエチレンテレフタ
レート、ポリアクリロニトリルなどを用いることができ
る。
Further, the thermoplastic resin formed by the opening peripheral portion, the columnar protective portion and the annular reinforcing portion on the cup body may be selected from those having thermal adhesiveness to the thermoplastic resin layer on the inner surface of the container body, depending on the purpose of the container. An appropriate resin can be selected and used.In general use, a general-purpose resin such as polyolefin is used.Especially, when the protection of the contents is considered, ethylene-vinyl alcohol copolymer, polyethylene terephthalate, Acrylonitrile and the like can be used.

【0013】また、容器本体を構成する積層材料は、内
容物の保護性を考慮して中間層にバリヤ層として、金属
箔層、酸化ケイ素などの無機物蒸着フィルム層やエチレ
ン・ビニルアルコール共重合体層などを用いることがで
きる。
The laminated material constituting the container body may be a barrier layer as an intermediate layer in consideration of the protection of the contents, such as a metal foil layer, an inorganic vapor-deposited film layer such as silicon oxide, or an ethylene-vinyl alcohol copolymer. Layers and the like can be used.

【0014】[0014]

【実施例】まず、ポリエチレン層(20μm)/板紙層
(坪量280g/m2 )/ポリエチレン(20μm)構成
の積層材料を用いて、高さが88mm、開口部の外径が
60mm、底部の外径が60mmのカップ状の容器本体
を作製し、次に、この容器本体を射出成形機に取り付け
た射出成形用金型の雌型に装填し、型締め後、熱溶融し
たポリエチレンをゲートからキャビティ内に射出して、
容器本体に開口周縁部、柱状保護部及び環状補強部を形
成した本実施例に係わるカップ状の複合容器を作製し
た。なお、射出成形用金型のゲートは、図7の複合容器
(200)のゲート跡(221)が示すように、開口周
縁部(220)の外周面に1箇所設けた。また、作製し
た複合容器は、開口周縁部の外径が65.5mm、蓋材
と嵌合する内径が56.5mmで、高さが90mmであ
った。
EXAMPLE First, using a laminated material of a polyethylene layer (20 μm) / paperboard layer (basis weight 280 g / m 2 ) / polyethylene (20 μm), the height was 88 mm, the outside diameter of the opening was 60 mm, and the bottom was A cup-shaped container body having an outer diameter of 60 mm was prepared, and then the container body was loaded into a female mold of an injection molding die attached to an injection molding machine, and after closing the mold, hot-melted polyethylene was passed through a gate. Inject into the cavity,
A cup-shaped composite container according to this example in which an opening peripheral portion, a columnar protective portion, and an annular reinforcing portion were formed in a container body was produced. In addition, as shown by the gate mark (221) of the composite container (200) in FIG. 7, one gate of the injection molding die is provided on the outer peripheral surface of the opening peripheral portion (220). The composite container produced had an outer diameter of 65.5 mm at the periphery of the opening, an inner diameter of 56.5 mm for fitting with the lid, and a height of 90 mm.

【0015】次に、ポリエチレンを射出成形して図7に
示す蓋材(300)を作製した。この蓋材は、天板(3
10)の外周内側内面に容器の開口周縁部内側面と嵌合
するインナーリング(320)を垂設したものであり、
天板の外径が65.5mm、インナーリングの外径が5
6.4mm、平均肉厚が1.1mmで、ゲート位置は天
板内面の中央に配置した。なお、図7に示すように、容
器(200)の開口周縁部(220)の内周面中程位置
に蓋材(300)との内径が56.8mmの嵌合凹溝リ
ング(222)を設け、この嵌合凹溝リングと対応する
蓋材のインナーリング(320)の外周面に外径が5
7.0mmの嵌合凸状リング(321)を設けた。
Next, a lid material (300) shown in FIG. 7 was produced by injection molding of polyethylene. This lid material is a top plate (3
10) an inner ring (320) vertically fitted to the inner peripheral surface of the opening of the container on the inner peripheral surface of the outer periphery,
The outer diameter of the top plate is 65.5 mm and the outer diameter of the inner ring is 5
The gate thickness was 6.4 mm, the average thickness was 1.1 mm, and the gate position was located at the center of the inner surface of the top plate. As shown in FIG. 7, a fitting groove groove (222) having an inner diameter of 56.8 mm with respect to the lid member (300) is provided at a position in the middle of the inner peripheral surface of the opening peripheral portion (220) of the container (200). The outer diameter of the inner ring (320) of the lid material corresponding to the fitting groove groove is 5 mm.
A 7.0 mm fitting convex ring (321) was provided.

【0016】そして、上述の本実施例に係わる複合容器
に、オイルレッド試薬を3重量%添加したテレピン油を
20ml充填し、上述の蓋材を嵌着して、20°C大気
圧下で24時間倒立放置したが、容器と蓋材との嵌合部
から内容物の液漏れを確認することは出来なかった。
Then, the composite container according to the present embodiment is filled with 20 ml of turpentine oil to which 3% by weight of the oil red reagent is added, and the above-mentioned lid is fitted thereto. Although the container was left upside down for a while, no leakage of the contents from the fitting portion between the container and the lid material could be confirmed.

【0017】[0017]

【発明の効果】本発明の製造方法により製造された複合
容器は、胴部上端の開口部に設けられた開口周縁部の蓋
材と嵌合する嵌合面に、残存するゲート跡がなく平滑で
あるため、蓋材を装着したときに、容器の密封性が十分
に得られる。
According to the composite container manufactured by the manufacturing method of the present invention, the fitting surface for fitting with the lid material at the periphery of the opening provided at the opening at the upper end of the body has no remaining gate marks and is smooth. Therefore, when the lid member is attached, the hermeticity of the container is sufficiently obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施形態の複合容器の製造方法にお
ける容器本体を装填した金型内の状態を示す説明図であ
る。
FIG. 1 is an explanatory view showing a state in a mold in which a container body is loaded in a method for manufacturing a composite container according to an embodiment of the present invention.

【図2】図1に示す本発明の製造方法により製造された
複合容器の断面図である。
FIG. 2 is a cross-sectional view of the composite container manufactured by the manufacturing method of the present invention shown in FIG.

【図3】図2のA−A’線断面図である。FIG. 3 is a sectional view taken along line A-A ′ of FIG. 2;

【図4】本発明の他の一実施形態の複合容器の製造方法
により製造された複合容器の断面図である。
FIG. 4 is a sectional view of a composite container manufactured by a method for manufacturing a composite container according to another embodiment of the present invention.

【図5】本発明の他の一実施形態の複合容器の製造方法
により製造された複合容器の断面図である。
FIG. 5 is a cross-sectional view of a composite container manufactured by a method for manufacturing a composite container according to another embodiment of the present invention.

【図6】(a)及び(b)は、複合容器の開口部の他の
一例の形状を示す断面図である。
FIGS. 6A and 6B are cross-sectional views showing another example of the shape of the opening of the composite container.

【図7】実施例の複合容器の蓋材との嵌合状態を示す部
分断面図である。
FIG. 7 is a partial cross-sectional view showing a fitted state of the composite container of the embodiment with a lid member.

【符号の説明】[Explanation of symbols]

100……射出成形用金型 101……ゲート 110……雌型 120……雄型 130……キャビティ 200……複合容器 210……容器本体 211……開口部 212……胴部 213……貼合せ部 214……底部 220……開口周縁部 221……ゲート跡 222……嵌合凹溝リング 230……柱状保護部 240……環状補強部 300……蓋材 310……天板 320……インナーリング 321……嵌合凸状リング 100: Mold for injection molding 101: Gate 110: Female mold 120: Male mold 130: Cavity 200: Composite container 210: Container body 211: Opening 212: Body 213: Pasting Fitting portion 214 Bottom 220 Opening edge 221 Gate mark 222 Fitting groove ring 230 Column protecting portion 240 Ring reinforcing portion 300 Lid 310 Top plate 320 Inner ring 321 …… Mating convex ring

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】紙層を主体層とし、少なくとも容器内面側
に熱可塑性樹脂層を設けた積層材料からなる胴部の内側
下方に底部を接合した容器本体を、射出成形用金型内の
所定の位置に装填し、キャビティ内に溶融熱可塑性樹脂
を射出して、前記容器本体の胴部上端の開口部に、蓋材
と嵌合する開口周縁部を少なくとも設けた複合容器の製
造方法において、前記開口周縁部の蓋材との嵌合面を除
く前記射出成形用金型の部位にゲートを配置したことを
特徴とする複合容器の製造方法。
A container body having a paper layer as a main layer and a bottom portion joined to a lower portion inside a body portion made of a laminated material having a thermoplastic resin layer provided at least on the inner surface side of the container, is provided in a predetermined shape in an injection mold. In the method of manufacturing a composite container, the molten thermoplastic resin is injected into the cavity, and the opening at the upper end of the body of the container main body is provided with at least an opening peripheral portion to be fitted with a lid material. A method for manufacturing a composite container, wherein a gate is arranged at a portion of the injection molding die except for a surface of the opening peripheral portion which is fitted with a lid member.
【請求項2】紙層を主体層とし、少なくとも容器内面側
に熱可塑性樹脂層を設けた積層材料からなる胴部の内側
下方に底部を接合した容器本体を、射出成形用金型内の
所定の位置に装填し、キャビティ内に溶融熱可塑性樹脂
を射出して、前記容器本体の胴部上端の開口部に蓋材と
嵌合する開口周縁部を設け、且つ胴部の内側の縦の貼合
せ部に柱状保護部を設けた複合容器の製造方法におい
て、前記開口周縁部の蓋材との嵌合面を除く前記射出成
形用金型の部位の1箇所又は複数箇所に、ゲートを配置
したことを特徴とする複合容器の製造方法。
2. A container body having a paper layer as a main layer and a bottom joined to a lower inside of a body made of a laminated material having a thermoplastic resin layer provided on at least an inner surface side of the container, is provided in a predetermined position in an injection mold. The molten thermoplastic resin is injected into the cavity, an opening peripheral portion is provided at the opening at the upper end of the body of the container body to fit the lid material, and a vertical adhesive inside the body is provided. In the method of manufacturing a composite container provided with a columnar protective portion at a joining portion, a gate is disposed at one or more portions of the injection molding die except for a fitting surface of the opening peripheral portion with a cover material. A method for producing a composite container, comprising:
【請求項3】紙層を主体層とし、少なくとも容器内面側
に熱可塑性樹脂層を設けた積層材料からなる胴部の内側
下方に底部を接合した容器本体を、射出成形用金型内の
所定の位置に装填し、キャビティ内に溶融熱可塑性樹脂
を射出して、前記容器本体の胴部上端の開口部に蓋材と
嵌合する開口周縁部を設け、胴部の内側の縦の貼合せ部
に柱状保護部を設け、且つ胴部と底部との合わせ目に環
状補強部を設けた複合容器の製造方法において、前記開
口周縁部の蓋材との嵌合面を除く前記射出成形用金型の
部位の1箇所又は複数箇所に、ゲートを配置したことを
特徴とする複合容器の製造方法。
3. A container body having a paper layer as a main layer and a bottom joined to a lower inside of a body made of a laminated material having a thermoplastic resin layer provided at least on the inner surface side of the container. , Melted thermoplastic resin is injected into the cavity, an opening peripheral portion is provided at the opening at the upper end of the body of the container body to fit the lid material, and the inside of the body is vertically bonded. In the method for manufacturing a composite container having a columnar protective portion provided on a portion and an annular reinforcing portion provided at a joint between a body portion and a bottom portion, the injection molding metal excluding a fitting surface of the opening peripheral portion with a lid member. A method for producing a composite container, wherein a gate is disposed at one or a plurality of locations of a mold.
JP11261997A 1997-04-30 1997-04-30 Production of composite container Pending JPH10296788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11261997A JPH10296788A (en) 1997-04-30 1997-04-30 Production of composite container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11261997A JPH10296788A (en) 1997-04-30 1997-04-30 Production of composite container

Publications (1)

Publication Number Publication Date
JPH10296788A true JPH10296788A (en) 1998-11-10

Family

ID=14591275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11261997A Pending JPH10296788A (en) 1997-04-30 1997-04-30 Production of composite container

Country Status (1)

Country Link
JP (1) JPH10296788A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012018972A2 (en) * 2010-08-06 2012-02-09 Graphic Packaging International, Inc. Injection-molded composite container
WO2012114270A1 (en) * 2011-02-23 2012-08-30 Stora Enso Oyj Package, method for forming a package and a moulding tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012018972A2 (en) * 2010-08-06 2012-02-09 Graphic Packaging International, Inc. Injection-molded composite container
WO2012018972A3 (en) * 2010-08-06 2012-04-26 Graphic Packaging International, Inc. Injection-molded composite container
WO2012114270A1 (en) * 2011-02-23 2012-08-30 Stora Enso Oyj Package, method for forming a package and a moulding tool
JP2014512312A (en) * 2011-02-23 2014-05-22 ストラ エンソ オサケ ユキチュア ユルキネン Packaging container, method for forming packaging container, and mold
US9199759B2 (en) 2011-02-23 2015-12-01 Delight Packaging Oy Method for forming a package

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