JP6801981B2 - How to make a container - Google Patents

How to make a container Download PDF

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JP6801981B2
JP6801981B2 JP2016093261A JP2016093261A JP6801981B2 JP 6801981 B2 JP6801981 B2 JP 6801981B2 JP 2016093261 A JP2016093261 A JP 2016093261A JP 2016093261 A JP2016093261 A JP 2016093261A JP 6801981 B2 JP6801981 B2 JP 6801981B2
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container
container body
sheet
molding
peeling
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JP2017200744A (en
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森繁　直樹
直樹 森繁
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Megmilk Snow Brand Co Ltd
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Megmilk Snow Brand Co Ltd
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  • Containers Having Bodies Formed In One Piece (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

本発明は、容器の製造方法に関する。 The present invention relates to a method for manufacturing a container.

従来、弁当等に使用されるトレイの内側にフィルムを貼付しておき、このフィルムを食事後に剥がしてリサイクル用に回収できるようにした容器が知られている（例えば、特許文献１参照）。
また、バターやマーガリン、ジャム、ヨーグルト等の食品を収容するスプレッドタイプの商品の容器が知られている。このような容器は、食品が充填される有底の容器と、容器本体の開口部の外周部に係脱して当該開口部を開閉可能な有天の蓋体とで構成される（例えば、特許文献２参照）。特許文献２に記載された従来の容器をリサイクルしようとする場合、容器内に付着して残っている食品を水洗したり拭き取ったりして容器から分離してから回収することが好ましい。 Conventionally, there is known a container in which a film is attached to the inside of a tray used for a lunch box or the like, and the film is peeled off after a meal so that the film can be collected for recycling (see, for example, Patent Document 1).
In addition, containers for spread-type products that contain foods such as butter, margarine, jam, and yogurt are known. Such a container is composed of a bottomed container filled with food and a heavenly lid that can be engaged with and closed from the outer peripheral portion of the opening of the container body to open and close the opening (for example, a patent). Reference 2). When the conventional container described in Patent Document 2 is to be recycled, it is preferable to wash or wipe the food remaining in the container with water to separate it from the container and then collect it.

登録実用新案第３１５９７３８号公報Registered Utility Model No. 3159738 特開２０１５−１８７００６号公報JP 2015-187006

特許文献１に記載されたような従来の容器は、容器を形成する樹脂層の上にフィルム層が積層された状態でシート成形することによって製造される。一方、特許文献２に記載されたような複雑な形状の容器は射出成形で製造されるものであり、シート成形加工では製造することができないという問題がある。 A conventional container as described in Patent Document 1 is manufactured by forming a sheet with a film layer laminated on a resin layer forming the container. On the other hand, a container having a complicated shape as described in Patent Document 2 is manufactured by injection molding, and has a problem that it cannot be manufactured by sheet molding.

本発明の目的は、射出成形で製造されるような複雑な形状の容器であっても、内側に剥離用シートを貼付できる容器の製造方法を提供することにある。 An object of the present invention is to provide a method for manufacturing a container in which a release sheet can be attached even if the container has a complicated shape as manufactured by injection molding.

本発明の容器の製造方法は、食品用の容器の製造方法であって、開口を有する容器本体を成形する第１成形工程と、成形された容器本体の開口に粘着性を有する剥離用シートを対向させ、シート成形によって剥離用シートを容器本体に貼付する第２成形工程とを備えていることを特徴とする。 The method for manufacturing a container of the present invention is a method for manufacturing a container for food, wherein a first molding step of molding a container body having an opening and a peeling sheet having adhesiveness to the opening of the molded container body are used. It is characterized by including a second molding step of attaching a peeling sheet to a container body by facing the sheet.

本発明によれば、第１成形工程で容器本体を成形し、第２成形工程でシート成形によって剥離用シートを容器本体に貼付するため、第１成形工程で複雑な形状を有する容器本体を成形した後、当該容器本体に剥離用シートを貼付することができる。従って、内側に剥離用シートが貼付された様々な形状の容器を製造することができる。 According to the present invention, since the container body is molded in the first molding step and the release sheet is attached to the container body by sheet molding in the second molding step, the container body having a complicated shape is molded in the first molding step. After that, a peeling sheet can be attached to the container body. Therefore, it is possible to manufacture containers having various shapes in which a peeling sheet is attached to the inside.

本発明の容器の製造方法は、容器本体に剥離用シートの真空成形用の貫通孔を形成する貫通孔形成工程を備え、真空成形によりシート成形が行われることが好ましい。 It is preferable that the method for manufacturing a container of the present invention includes a through-hole forming step of forming a through hole for vacuum forming a peeling sheet in the container body, and the sheet is formed by vacuum forming.

本発明によれば、容器本体に剥離用シートの真空成形用の貫通孔を形成し、当該貫通孔を介した真空成形により剥離用シートをシート成形するため、当該剥離用シートを容器本体に密着させて貼付することができる。 According to the present invention, a through hole for vacuum forming a peeling sheet is formed in the container body, and the peeling sheet is formed into a sheet by vacuum forming through the through hole, so that the peeling sheet is brought into close contact with the container body. Can be pasted.

本発明の容器の製造方法において、貫通孔は、第１成形工程における容器本体の成形によって形成されることが好ましい。 In the method for manufacturing a container of the present invention, the through hole is preferably formed by molding the container body in the first molding step.

本発明によれば、容器本体の成形により貫通孔を形成するため、第１成形工程を行うことで同時に貫通孔形成工程も実施することができ、容器の製造時間を短縮することができる。 According to the present invention, since the through hole is formed by molding the container body, the through hole forming step can be performed at the same time by performing the first molding step, and the manufacturing time of the container can be shortened.

本発明の第１実施形態に係る食品容器を示す分解斜視図。The exploded perspective view which shows the food container which concerns on 1st Embodiment of this invention. 第１実施形態に係る容器の断面図。Sectional drawing of the container which concerns on 1st Embodiment. 図２の容器の平面図。Top view of the container of FIG. 図２の容器の製造方法を説明するための図。The figure for demonstrating the manufacturing method of the container of FIG. 図２の容器の製造方法を説明するための図。The figure for demonstrating the manufacturing method of the container of FIG. 図２の容器の製造方法を説明するための図。The figure for demonstrating the manufacturing method of the container of FIG. 図２の容器の製造方法を説明するための図。The figure for demonstrating the manufacturing method of the container of FIG. 本発明の第２実施形態に係る食品容器を示す分解斜視図。The exploded perspective view which shows the food container which concerns on 2nd Embodiment of this invention. 第２実施形態に係る容器の断面図。Sectional drawing of the container which concerns on 2nd Embodiment. 図９の容器の製造方法を説明するための図。The figure for demonstrating the manufacturing method of the container of FIG. 図９の容器の製造方法を説明するための図。The figure for demonstrating the manufacturing method of the container of FIG.

以下、図面に基づいて本発明の各実施形態について説明する。
なお、以下の記載において方向を表す場合、図１に示すように、容器２を下側にして食品容器１を置いた状態を基準とする。また、第２実施形態以降において、第１実施形態と同じ構成部材および同様な機能を有する構成部材には、第１実施形態の構成部材と同じ符号を付し、それらの説明を省略または簡略化する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
When the direction is indicated in the following description, as shown in FIG. 1, the state in which the food container 1 is placed with the container 2 facing down is used as a reference. Further, in the second and subsequent embodiments, the constituent members having the same functions as those of the first embodiment and the constituent members having the same functions are designated by the same reference numerals as the constituent members of the first embodiment, and their description is omitted or simplified. To do.

［第１実施形態］
図１において、食品容器１は、例えばバターやマーガリンなどの食品を収容するものであり、樹脂の射出成型品である。食品容器１は、上部に開口２０が形成された有底の容器２と、容器２に着脱自在に取り付けられ、開口２０を覆う有天の蓋体３とを備えている。このような食品容器１において、蓋体３を容器２から外して開口２０を開放する場合、蓋体３の蓋体側長辺部３４Ｂを外側から把持し、蓋体３を内側にゆがませて変形させる（図１中の白抜き矢印および二点鎖線参照）。そうすると、蓋体３の蓋体側短辺部３４Ｃが外側に広がるようにゆがみ、蓋体３の蓋体側角部３４Ａが容器２の本体側角部２６Ａから外側に離間し、容器２および蓋体３の互いの係合が解除される。 [First Embodiment]
In FIG. 1, the food container 1 stores foods such as butter and margarine, and is an injection-molded resin product. The food container 1 includes a bottomed container 2 having an opening 20 formed in the upper portion, and a heavenly lid 3 that is detachably attached to the container 2 and covers the opening 20. In such a food container 1, when the lid 3 is removed from the container 2 to open the opening 20, the long side portion 34B on the lid side of the lid 3 is gripped from the outside, and the lid 3 is distorted inward. Transform (see white arrow and alternate long and short dash line in FIG. 1). Then, the short side portion 34C on the lid side of the lid 3 is distorted so as to spread outward, the corner portion 34A on the lid side of the lid 3 is separated outward from the corner portion 26A on the main body side of the container 2, and the container 2 and the lid 3 are separated. Are disengaged from each other.

［容器］
容器２は、図２および図３にも示すように、容器本体２１と、容器本体２１に剥離可能に貼付された剥離用シートとしての剥離用フィルム２２とを備えている。 [container]
As shown in FIGS. 2 and 3, the container 2 includes a container main body 21 and a peeling film 22 as a peeling sheet that is peelably attached to the container main body 21.

容器本体２１は、ポリプロピレンやポリエチレンテレフタレート等の耐油性や耐熱性に優れた樹脂で構成される。容器本体２１は、底面部２３と、底面部２３の周縁から上方に立設された側面部２４と、側面部２４の上端縁に周方向に連続して設けられ、当該上端縁から外部に向けて水平に延出した第１鍔部２５と、第１鍔部２５の先端縁から上下方向に立設され、開口２０の辺縁を形成する略四角枠状の立上側壁２６と、立上側壁２６の下端縁に周方向に連続して設けられ、当該下端縁から外部に向けて水平に延出した第２鍔部２７とを備えている。 The container body 21 is made of a resin having excellent oil resistance and heat resistance such as polypropylene and polyethylene terephthalate. The container body 21 is continuously provided on the bottom surface portion 23, the side surface portion 24 erected above the peripheral edge of the bottom surface portion 23, and the upper end edge of the side surface portion 24 in the circumferential direction, and faces outward from the upper end edge. The first flange portion 25 extending horizontally, and the rising side wall 26 having a substantially square frame shape, which is erected vertically from the tip edge of the first flange portion 25 and forms the edge of the opening 20, stand up. A second flange portion 27 which is continuously provided on the lower end edge of the side wall 26 in the circumferential direction and extends horizontally from the lower end edge to the outside is provided.

底面部２３は、平面視にて略長方形状とされ、その４隅に剥離用フィルム２２の真空成形用の貫通孔２３Ａを有している。 The bottom surface portion 23 has a substantially rectangular shape in a plan view, and has through holes 23A for vacuum forming the peeling film 22 at its four corners.

側面部２４は、平面視にて略長方形枠状とされている。側面部２４は、開口２０を挟んで対向しかつ外側から把持される側の一対の把持側面部としての長辺側面部２４Ａと、開口２０を挟みかつ長辺側面部２４Ａに対して略直角をなして対向する一対の非把持側面部としての短辺側面部２４Ｂとを備えている。 The side surface portion 24 has a substantially rectangular frame shape in a plan view. The side surface portion 24 has a long side side surface portion 24A as a pair of gripping side surface portions on the side facing the opening 20 and being gripped from the outside, and a substantially right angle to the long side side surface portion 24A sandwiching the opening 20. It is provided with a short side side surface portion 24B as a pair of non-grasping side surface portions facing each other.

立上側壁２６は、平面視にて略長方形枠状とされている。この立上側壁２６は、四隅に設けられた円弧状の角部としての本体側角部２６Ａと、開口２０を挟んで対向しかつ外側から把持される側の一対の本体側長辺部２６Ｂと、開口２０を挟みかつ本体側長辺部２６Ｂに対して略直角をなして対向する一対の本体側短辺部２６Ｃとを備えている。
本体側角部２６Ａは、外側に突出するとともに、周方向に所定の長さを有した１条の本体側係合部２６Ｄを備えている。 The rising side wall 26 has a substantially rectangular frame shape in a plan view. The rising side wall 26 includes a main body side corner portion 26A as an arcuate corner portion provided at four corners, and a pair of main body side long side portions 26B facing each other across the opening 20 and being gripped from the outside. A pair of short side portions 26C on the main body side are provided so as to sandwich the opening 20 and face the long side portion 26B on the main body side at a substantially right angle.
The main body side corner portion 26A includes a single main body side engaging portion 26D having a predetermined length in the circumferential direction while projecting outward.

第２鍔部２７は、本体側角部２６Ａ、本体側長辺部２６Ｂ、および本体側短辺部２６Ｃにわたって連続して設けられている。このような第２鍔部２７は、蓋体３を支持する部位である。図１では、第２鍔部２７は、本体側短辺部２６Ｃおよびその両側の本体側角部２６Ａにかけては大きく延設され、本体側長辺部２６Ｂに対応した位置では蓋体３の厚さ程度に小さく延設されて描かれているが、例えば周方向に沿って略同じ延設長さで形成される場合もある。 The second flange portion 27 is continuously provided over the main body side corner portion 26A, the main body side long side portion 26B, and the main body side short side portion 26C. Such a second flange portion 27 is a portion that supports the lid body 3. In FIG. 1, the second flange portion 27 is largely extended to the main body side short side portion 26C and the main body side corner portions 26A on both sides thereof, and the thickness of the lid 3 at a position corresponding to the main body side long side portion 26B Although it is drawn as a small extension, it may be formed with substantially the same extension length along the circumferential direction, for example.

剥離用フィルム２２は、無延伸ポリプロピレンやポリエチレンテレフタレート等の樹脂で形成され、弱粘着性を有する。剥離用フィルム２２は、容器本体２１の内面全体に貼付された第１貼付部２２Ａと、容器本体２１の立上側壁２６の上端縁全体に貼付された第２貼付部２２Ｂと、第２貼付部２２Ｂから外側に延出したタブ２２Ｃとを備えている。 The peeling film 22 is made of a resin such as unstretched polypropylene or polyethylene terephthalate, and has weak adhesiveness. The peeling film 22 has a first sticking portion 22A attached to the entire inner surface of the container main body 21, a second sticking portion 22B attached to the entire upper end edge of the rising side wall 26 of the container main body 21, and a second sticking portion. It has a tab 22C extending outward from 22B.

［蓋体］
蓋体３は、天面部３１と、天面部３１の周縁から下方に垂設された略四角枠状の側面部３２と、側面部３２の下端縁に周方向に連続して設けられ、当該下端縁から外部に向けて水平に僅かに延出した第１鍔部３３と、第１鍔部３３の先端縁から垂下され、容器２への取付時に立上側壁２６の外側に位置する略四角枠状の垂下側壁３４と、垂下側壁３４の下端縁に周方向に連続して設けられ、当該下端縁から外部に向けて水平に僅かに延出した第２鍔部３５とを備えている。 [Lid]
The lid 3 is provided continuously on the top surface portion 31, the side surface portion 32 having a substantially square frame shape vertically hung downward from the peripheral edge of the top surface portion 31, and the lower end edge of the side surface portion 32 in the circumferential direction, and the lower end thereof. A substantially square frame that hangs down from the first flange portion 33 that slightly extends horizontally from the edge to the outside and the tip edge of the first flange portion 33 and is located outside the rising side wall 26 when attached to the container 2. It is provided with a shape-shaped hanging side wall 34 and a second flange portion 35 which is continuously provided on the lower end edge of the hanging side wall 34 in the circumferential direction and slightly extends horizontally from the lower end edge to the outside.

垂下側壁３４は、平面視にて略長方形枠状とされている。この垂下側壁３４は、四隅に設けられた円弧状の蓋体側角部３４Ａと、容器２の開口２０を挟んで対向しかつ外側から把持される側の一対の把持側辺部としての蓋体側長辺部３４Ｂと、開口２０を挟みかつ蓋体側長辺部３４Ｂに対して略直角をなして対向する一対の非把持側辺部としての蓋体側短辺部３４Ｃとを備えている。
蓋体側角部３４Ａは、内側に突出するとともに、周方向に所定の長さを有して本体側係合部２６Ｄと係脱する１条の蓋体側係合部３４Ｄを備えている。この蓋体側係合部３４Ｄは、成型により設けられている。 The hanging side wall 34 has a substantially rectangular frame shape in a plan view. The hanging side wall 34 has an arcuate lid side corner 34A provided at four corners and a lid side length as a pair of gripping side sides facing each other across the opening 20 of the container 2 and being gripped from the outside. A side portion 34B and a lid side short side portion 34C as a pair of non-grasping side portions facing the lid side long side portion 34B with the opening 20 sandwiched therein are provided.
The lid side corner portion 34A is provided with a single lid side engaging portion 34D that protrudes inward and has a predetermined length in the circumferential direction and engages with and disengages from the main body side engaging portion 26D. The lid side engaging portion 34D is provided by molding.

［食品容器のリサイクル］
食品容器１のリサイクルにあたっては、食品容器１に付着した食品を水洗したり拭き取ったりして食品容器１をきれいにしてから回収する必要がある。ここで、蓋体３には、容器２内の食品と接触していないためそれほど食品が付着していないのに対し、容器２には、収容された食品の油分等が剥離用フィルム２２に付着していることが多い。このような場合でも、容器本体２１から剥離用フィルム２２を剥がすことで、容器２に付着した食品を容易に分離することができ、容器２をきれいな状態にしてリサイクルに回すことができる。 [Recycling of food containers]
When recycling the food container 1, it is necessary to clean the food container 1 by washing or wiping the food adhering to the food container 1 with water before collecting the food container 1. Here, the lid 3 does not have much food adhered to the lid 3 because it is not in contact with the food in the container 2, whereas the oil content of the contained food adheres to the peeling film 22 in the container 2. I often do it. Even in such a case, by peeling the release film 22 from the container body 21, the food adhering to the container 2 can be easily separated, and the container 2 can be kept in a clean state and recycled.

［容器の製造方法］
次に、容器２の製造方法につい説明する。
先ず、容器本体２１を成形する第１成形工程を実施する。本実施形態では、図４および図５に基づいて、射出成形装置４０で第１成形工程を実施する場合について説明する。 [Container manufacturing method]
Next, the manufacturing method of the container 2 will be described.
First, the first molding step of molding the container body 21 is carried out. In this embodiment, a case where the first molding step is carried out by the injection molding apparatus 40 will be described with reference to FIGS. 4 and 5.

図４において、射出成形装置４０は、樹脂原料を溶融混練するシリンダ４１と、シリンダ４１に接続された金型４２とを備えている。
金型４２は、雄型４３および雌型４４を備えている。雄型４３は、その頂面から突出した突出部４３Ａを備えている。 In FIG. 4, the injection molding apparatus 40 includes a cylinder 41 for melt-kneading the resin raw material and a mold 42 connected to the cylinder 41.
The mold 42 includes a male mold 43 and a female mold 44. The male type 43 includes a protruding portion 43A protruding from the top surface thereof.

図４に示すように、射出成形装置４０は、雄型４３および雌型４４が型締めされた状態で、雄型４３と雌型４４とで形成されるキャビティ４５内にシリンダ４１から樹脂を射出して充填する。次いで、金型４２を冷却することで、当該金型４２内の樹脂を冷却して固化させる。これにより、キャビティ４５内に容器本体２１が成形されるとともに、当該容器本体２１に貫通孔２３Ａを形成する貫通孔形成工程が実施される。そして、図５に示すように、雄型４３と雌型４４とを相対移動して互いに離間させた後、雌型４４から容器本体２１を離型させる。 As shown in FIG. 4, the injection molding apparatus 40 injects resin from the cylinder 41 into the cavity 45 formed by the male mold 43 and the female mold 44 in a state where the male mold 43 and the female mold 44 are molded. And fill. Next, by cooling the mold 42, the resin in the mold 42 is cooled and solidified. As a result, the container body 21 is formed in the cavity 45, and the through hole forming step of forming the through hole 23A in the container body 21 is carried out. Then, as shown in FIG. 5, the male mold 43 and the female mold 44 are relatively moved to be separated from each other, and then the container body 21 is released from the female mold 44.

次に、剥離用フィルム２２をシート成形して容器本体２１に貼付する第２成形工程を実施する。本実施形態では、シート成形装置５０で第２成形工程を実施する場合について、図６および図７に基づき説明する。 Next, a second molding step of forming the release film 22 into a sheet and attaching it to the container body 21 is carried out. In the present embodiment, the case where the second molding step is carried out by the sheet molding apparatus 50 will be described with reference to FIGS. 6 and 7.

図６において、シート成形装置５０は、剥離用フィルム２２を搬送する搬送装置５１と、剥離用フィルム２２を切断する切断装置５２と、剥離用フィルム２２を真空成形する真空成形装置５３とを備えている。
搬送装置５１は、剥離用フィルム２２を把持可能に構成されたクランプ５１Ａと、クランプ５１Ａを移動させる図示しない駆動機構とを備えている。
切断装置５２は、切断刃５２Ａと、切断刃５２Ａを移動させる図示しない駆動機構とを備えている。
真空成形装置５３は、剥離用フィルム２２を加熱するヒータ等の加熱装置５４と、容器本体２１を支持する吸引テーブル５５と、吸引テーブル５５に接続された減圧ポンプ５６とを備えている。吸引テーブル５５は、容器本体２１を支持する支持面５５Ａと、支持面５５Ａに設けられ、減圧ポンプ５６により吸引力を付与可能な吸引孔５５Ｂとを備えている。 In FIG. 6, the sheet forming apparatus 50 includes a conveying device 51 for conveying the peeling film 22, a cutting device 52 for cutting the peeling film 22, and a vacuum forming apparatus 53 for vacuum forming the peeling film 22. There is.
The transport device 51 includes a clamp 51A configured to be able to grip the peeling film 22, and a drive mechanism (not shown) for moving the clamp 51A.
The cutting device 52 includes a cutting blade 52A and a drive mechanism (not shown) for moving the cutting blade 52A.
The vacuum forming device 53 includes a heating device 54 such as a heater that heats the peeling film 22, a suction table 55 that supports the container body 21, and a pressure reducing pump 56 that is connected to the suction table 55. The suction table 55 includes a support surface 55A that supports the container body 21, and a suction hole 55B that is provided on the support surface 55A and can be subjected to suction force by the pressure reducing pump 56.

図６中実線で示すように、シート成形装置５０は、吸引テーブル５５で容器本体２１を貫通孔２３Ａと吸引孔５５Ｂとが連通する位置で支持するとともに、クランプ５１Ａで容器本体２１の開口２０よりも大きな外形形状を有する剥離用フィルム２２を把持する。次いで、シート成形装置５０は、加熱装置５４で剥離用フィルム２２を加熱した後、図６中二点鎖線で示すように、クランプ５１Ａを移動し、容器本体２１の開口２０に剥離用フィルム２２を対向させ、容器本体２１の立上側壁２６の上端縁に剥離用フィルム２２を当接させる。そして、シート成形装置５０は、容器本体２１と剥離用フィルム２２とで囲まれた空間Ｖ１を、吸引孔５５Ｂおよび貫通孔２３Ａを介して減圧ポンプ５６で減圧し、剥離用フィルム２２を空間Ｖ１内に吸引する。これにより、図７に示すように、剥離用フィルム２２が容器本体２１を型としてシート成形され、当該容器本体２１の内面および立上側壁２６の上端縁に貼付する。すなわち、容器本体２１を受け側の金型と見立て、シート成形によって、剥離用フィルム２２を容器本体２１に密着成形する。 As shown by the solid line in FIG. 6, the sheet forming apparatus 50 supports the container body 21 at the position where the through hole 23A and the suction hole 55B communicate with each other on the suction table 55, and the clamp 51A from the opening 20 of the container body 21. Also grips the peeling film 22 having a large outer shape. Next, the sheet forming apparatus 50 heats the peeling film 22 with the heating apparatus 54, then moves the clamp 51A as shown by the alternate long and short dash line in FIG. 6, and puts the peeling film 22 in the opening 20 of the container body 21. The peeling film 22 is brought into contact with the upper end edge of the rising side wall 26 of the container body 21 so as to face each other. Then, the sheet forming apparatus 50 decompresses the space V1 surrounded by the container body 21 and the peeling film 22 by the pressure reducing pump 56 through the suction hole 55B and the through hole 23A, and puts the peeling film 22 in the space V1. To suck. As a result, as shown in FIG. 7, the peeling film 22 is sheet-molded using the container body 21 as a mold, and is attached to the inner surface of the container body 21 and the upper end edge of the rising side wall 26. That is, the release film 22 is closely molded to the container body 21 by sheet molding, assuming that the container body 21 is a mold on the receiving side.

その後、シート成形装置５０は、図７中二点鎖線で示すように、剥離用フィルム２２に向けて切断刃５２Ａを移動させ、タブ２２Ｃを残して、剥離用フィルム２２を立上側壁２６の外縁に沿って型抜きするシート切断工程を実施する。これにより、図１および図２に示すような、容器本体２１の内面に剥離用フィルム２２が貼付された容器２が製造される。 After that, the sheet forming apparatus 50 moves the cutting blade 52A toward the peeling film 22 as shown by the alternate long and short dash line in FIG. 7, leaving the tab 22C, and moves the peeling film 22 to the outer edge of the rising side wall 26. A sheet cutting step of die cutting is carried out along the above. As a result, the container 2 in which the peeling film 22 is attached to the inner surface of the container body 21 as shown in FIGS. 1 and 2 is manufactured.

［実施形態の効果］
本実施形態によれば、第１成形工程で容器本体２１を成形し、第２成形工程で剥離用フィルム２２をシート成形して容器本体２１に貼付するため、第１成形工程で複雑な形状を有する容器本体２１を成形した後、当該容器本体２１に剥離用フィルム２２を貼付することができる。従って、剥離用フィルム２２が貼付された様々な形状の容器２を製造することができる。 [Effect of Embodiment]
According to the present embodiment, the container body 21 is molded in the first molding step, and the peeling film 22 is sheet-molded in the second molding step and attached to the container body 21, so that a complicated shape is formed in the first molding step. After molding the container body 21 to have, the peeling film 22 can be attached to the container body 21. Therefore, it is possible to manufacture containers 2 having various shapes to which the release film 22 is attached.

また、容器本体２１に貫通孔２３Ａが形成されているため、剥離用フィルム２２を容器本体２１の内側に形成するときに、当該貫通孔２３Ａを介した真空成形により剥離用フィルム２２をシート成形することができる。よって、当該剥離用フィルム２２を容器本体２１に密着させて貼付することができる。 Further, since the through hole 23A is formed in the container body 21, when the release film 22 is formed inside the container body 21, the release film 22 is sheet-molded by vacuum forming through the through hole 23A. be able to. Therefore, the peeling film 22 can be attached in close contact with the container body 21.

また、容器本体２１の射出成形により貫通孔２３Ａを形成するため、第１成形工程を行うことで同時に貫通孔形成工程も実施することができ、容器２の製造時間を短縮することができる。 Further, since the through hole 23A is formed by injection molding of the container body 21, the through hole forming step can be performed at the same time by performing the first molding step, and the manufacturing time of the container 2 can be shortened.

［第２実施形態］
本実施形態に係る食品容器１は、図８および図９に示すように、容器２Ａの剥離用フィルム２２Ｄの形状が第１実施形態と相違する。
剥離用フィルム２２Ｄは、第１貼付部２２Ａと、第２貼付部２２Ｂと、容器本体２１の立上側壁２６の外側面全体および第２鍔部２７の上面全体に貼付された第３貼付部２２Ｅと、第３貼付部２２Ｅから外側に延出したタブ２２Ｆとを備えている。 [Second Embodiment]
As shown in FIGS. 8 and 9, the food container 1 according to the present embodiment has a shape of the peeling film 22D of the container 2A different from that of the first embodiment.
The peeling film 22D has a first sticking portion 22A, a second sticking portion 22B, and a third sticking portion 22E attached to the entire outer surface of the rising side wall 26 of the container body 21 and the entire upper surface of the second flange portion 27. And a tab 22F extending outward from the third sticking portion 22E.

次に、図１０および図１１に基づいて、容器２Ａの製造方法について説明する。なお、第１成形工程は、第１実施形態と同様であるため説明を省略し、シート成形装置５０Ａによる第２成形工程およびシート切断工程について説明する。 Next, a method for manufacturing the container 2A will be described with reference to FIGS. 10 and 11. Since the first molding step is the same as that of the first embodiment, the description thereof will be omitted, and the second molding step and the sheet cutting step by the sheet molding apparatus 50A will be described.

図１０において、シート成形装置５０Ａは、搬送装置５１と、切断装置５２と、剥離用フィルム２２Ｄを真空成形する真空成形装置５３Ａとを備えている。
真空成形装置５３Ａは、加熱装置５４と、容器本体２１を支持する吸引テーブル５７と、減圧ポンプ５６とを備えている。吸引テーブル５７は、その内面で容器本体２１の底面部２３および側面部２４を支持可能な凹部５７Ａと、容器本体２１の第１鍔部２５を支持可能な第１支持面５７Ｂと、容器本体２１の立上側壁２６および第２鍔部２７を支持可能な第２支持面５７Ｃと、凹部５７Ａに設けられ、減圧ポンプ５６により吸引力を付与可能な第１吸引孔５７Ｄと、第２支持面５７Ｃに設けられ、減圧ポンプ５６により吸引力を付与可能な第２吸引孔５７Ｅと、第１支持面５７Ｂに設けられた刃止溝５７Ｆとを備えている。 In FIG. 10, the sheet forming apparatus 50A includes a conveying device 51, a cutting apparatus 52, and a vacuum forming apparatus 53A for vacuum forming the release film 22D.
The vacuum forming device 53A includes a heating device 54, a suction table 57 that supports the container body 21, and a decompression pump 56. The suction table 57 has a recess 57A capable of supporting the bottom surface 23 and the side surface 24 of the container body 21 on its inner surface, a first support surface 57B capable of supporting the first flange 25 of the container body 21, and the container body 21. A second support surface 57C capable of supporting the rising side wall 26 and the second flange portion 27, a first suction hole 57D provided in the recess 57A and capable of applying suction force by a pressure reducing pump 56, and a second support surface 57C. The second suction hole 57E, which is provided in the above and can apply suction force by the pressure reducing pump 56, and the blade stop groove 57F provided on the first support surface 57B are provided.

図１０中実線で示すように、シート成形装置５０は、吸引テーブル５７で容器本体２１を支持するとともに、クランプ５１Ａで剥離用フィルム２２Ｄを把持する。次いで、シート成形装置５０は、加熱装置５４で剥離用フィルム２２Ｄを加熱した後、図１０中二点鎖線で示すように、クランプ５１Ａを移動し、容器本体２１の立上側壁２６の上端縁および吸引テーブル５７に剥離用フィルム２２Ｄを当接させる。そして、シート成形装置５０は、空間Ｖ１と、容器本体２１、第２支持面５７Ｃ、および剥離用フィルム２２Ｄで囲まれた空間Ｖ２とを、貫通孔２３Ａ、第１吸引孔５７Ｄ、および第２吸引孔５７Ｅを介して減圧ポンプ５６で減圧し、剥離用フィルム２２Ｄを空間Ｖ１、Ｖ２内に吸引する。これにより、図１１に示すように、剥離用フィルム２２Ｄが容器本体２１を型としてシート成形され、当該容器本体２１に貼付する。 As shown by the solid line in FIG. 10, the sheet forming apparatus 50 supports the container body 21 by the suction table 57 and grips the peeling film 22D by the clamp 51A. Next, the sheet forming apparatus 50 heats the peeling film 22D with the heating apparatus 54, then moves the clamp 51A as shown by the alternate long and short dash line in FIG. 10, and moves the clamp 51A to the upper end edge of the rising side wall 26 of the container body 21 and The peeling film 22D is brought into contact with the suction table 57. Then, the sheet forming apparatus 50 creates the space V1 and the space V2 surrounded by the container body 21, the second support surface 57C, and the peeling film 22D through the through hole 23A, the first suction hole 57D, and the second suction hole 57D. The pressure is reduced by the pressure reducing pump 56 through the holes 57E, and the release film 22D is sucked into the spaces V1 and V2. As a result, as shown in FIG. 11, the release film 22D is sheet-molded using the container body 21 as a mold and attached to the container body 21.

その後、シート成形装置５０は、図１１中二点鎖線で示すように、剥離用フィルム２２Ｄに向けて切断刃５２Ａを移動させ、タブ２２Ｆを残して、剥離用フィルム２２Ｄを第２鍔部２７の外縁に沿って型抜きするシート切断工程を実施する。 After that, as shown by the alternate long and short dash line in FIG. 11, the sheet forming apparatus 50 moves the cutting blade 52A toward the peeling film 22D, leaving the tab 22F, and moves the peeling film 22D to the second flange portion 27. A sheet cutting step of die cutting along the outer edge is carried out.

［変形例］
本発明は、前記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変更等は、本発明に含まれる。
例えば、容器本体２１は、ポリエチレンやポリスチレンその他の樹脂で構成されてもよい。また、容器本体２１は、射出成形以外の方法で成形されてもよい。
貫通孔形成工程は、第１成形工程とは別に実施してもよい。すなわち、貫通孔２３Ａは、容器本体２１を射出成形した後に形成してもよい。また、貫通孔２３Ａを設ける位置は容器本体２１の底面部２３に限らず、容器形状が複雑な場合は、例えば容器本体２１の側面部２４に設けてもよい [Modification example]
The present invention is not limited to the above-described embodiment, and modifications and the like within the range in which the object of the present invention can be achieved are included in the present invention.
For example, the container body 21 may be made of polyethylene, polystyrene or other resin. Further, the container body 21 may be molded by a method other than injection molding.
The through hole forming step may be performed separately from the first molding step. That is, the through hole 23A may be formed after the container body 21 is injection-molded. Further, the position where the through hole 23A is provided is not limited to the bottom surface portion 23 of the container body 21, and may be provided on the side surface portion 24 of the container body 21, for example, when the container shape is complicated.

剥離用シートは、粘着性を有するシートであれば、フィルム以外のものを用いてもよい。
剥離用シートは、容器本体２１からシートを剥がすときに破れない程度に密着していることが好ましいい。
剥離用シートと容器本体２１との密着の程度は、容器本体２１の材質や形状に応じて、シートの厚みや材料を選定して調整してもよい。
剥離用フィルム２２、２２Ｄは、真空圧空成形、熱盤圧空成形その他の方法でシート成形されてもよい。
タブ２２Ｃ、２２Ｆは、複数設けられてもよい。また、タブ２２Ｃ、２２Ｆは、第２貼付部２２Ｂや第３貼付部２２Ｅから部分的に延出するものに限られず、第２貼付部２２Ｂや第３貼付部２２Ｅに周方向に連続して設けられてもよい。 As the peeling sheet, a sheet other than a film may be used as long as it is an adhesive sheet.
It is preferable that the peeling sheet is in close contact with the container body 21 so as not to be torn when the sheet is peeled off.
The degree of adhesion between the peeling sheet and the container body 21 may be adjusted by selecting the thickness and material of the sheet according to the material and shape of the container body 21.
The peeling films 22 and 22D may be sheet-molded by vacuum compressed air forming, hot plate compressed air forming or other methods.
A plurality of tabs 22C and 22F may be provided. Further, the tabs 22C and 22F are not limited to those that partially extend from the second sticking portion 22B and the third sticking portion 22E, and are provided continuously in the circumferential direction on the second sticking portion 22B and the third sticking portion 22E. May be done.

本体側係合部２６Ｄや蓋体側係合部３４Ｄは、本体側角部２６Ａや蓋体側角部３４Ａに複数設けられていてもよい。 A plurality of main body side engaging portions 26D and lid side engaging portions 34D may be provided in the main body side corner portion 26A and the lid side corner portion 34A.

側面部２４、立上側壁２６、垂下側壁３４は、平面視で長方形枠状ではなく、正方形枠状であってもよい。また、長方形枠状とされた場合でも、把持される側を短辺側面部２４Ｂ、本体側短辺部２６Ｃ、蓋体側短辺部３４Ｃとし、非把持側を長辺側面部２４Ａ、本体側長辺部２６Ｂ、蓋体側長辺部３４Ｂとしてもよい。 The side surface portion 24, the rising side wall 26, and the hanging side wall 34 may have a square frame shape instead of a rectangular frame shape in a plan view. Even in the case of a rectangular frame shape, the gripped side is the short side side surface portion 24B, the main body side short side portion 26C, and the lid side short side portion 34C, and the non-grasping side is the long side side surface portion 24A, the main body side length. The side portion 26B and the long side portion 34B on the lid side may be used.

本発明は、バターやマーガリン等の食品を収容する容器として好適に利用できる。 The present invention can be suitably used as a container for containing foods such as butter and margarine.

１…食品容器、２…容器、２０…開口、３…蓋体、２１…容器本体、２２…剥離用フィルム（剥離用シート）、２３…底面部、２３Ａ…貫通孔、２４…側面部、２５…第１鍔部、２６…立上側壁、２７…第２鍔部。 1 ... Food container, 2 ... Container, 20 ... Opening, 3 ... Lid, 21 ... Container body, 22 ... Peeling film (peeling sheet), 23 ... Bottom part, 23A ... Through hole, 24 ... Side part, 25 ... 1st brim, 26 ... Rising side wall, 27 ... 2nd brim.

Claims (2)

食品用の容器の製造方法であって、
樹脂の射出成形によって、開口を有する容器本体を成形するとともに、前記容器本体に粘着性を有する剥離用シートの真空成形用の貫通孔を形成する第１成形工程と、
成形された容器本体の開口に前記剥離用シートを対向させ、真空成形でのシート成形によって前記剥離用シートを容器本体に貼付する第２成形工程とを備えていることを特徴とする容器の製造方法。 It is a method of manufacturing containers for food.
A first molding step of molding a container body having an opening by injection molding of a resin and forming a through hole for vacuum forming a peeling sheet having adhesiveness in the container body .
Production of containers the opening of the molded container body are opposed to the release sheet, characterized in that a second forming step of attaching the release sheet to the container body by a sheet molding in a vacuum molding Method. 請求項１に記載の容器の製造方法において、
前記容器本体は、前記開口の辺縁を形成する立上側壁と、前記立上側壁から外部に向けて水平に延出した鍔部とを備え、
前記第２成形工程では、前記容器本体と前記剥離用シートとで囲まれた空間と、前記容器本体、前記鍔部を支持する支持面、および前記剥離用シートで囲まれた空間とを減圧して前記シート成形が行われることを特徴とする容器の製造方法。 In the method for manufacturing a container according to claim 1,
The container body includes a rising side wall forming an edge of the opening and a collar portion horizontally extending outward from the rising side wall .
In the second molding step, the space surrounded by the container body and the peeling sheet, the container body, the support surface supporting the collar portion, and the space surrounded by the peeling sheet are depressurized. A method for manufacturing a container, which comprises performing the sheet molding.
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KR102593188B1 (en) * 2021-05-18 2023-10-23 곽금영 Recyclable and reusable container and thereof manufacturing method and manufacturing apparatus

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