JP2021066479A - container - Google Patents

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JP2021066479A
JP2021066479A JP2019193598A JP2019193598A JP2021066479A JP 2021066479 A JP2021066479 A JP 2021066479A JP 2019193598 A JP2019193598 A JP 2019193598A JP 2019193598 A JP2019193598 A JP 2019193598A JP 2021066479 A JP2021066479 A JP 2021066479A
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container
recess
region
container according
seal
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JP7478533B2 (en
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季和 橋本
Suekazu Hashimoto
季和 橋本
康宏 中野
Yasuhiro Nakano
康宏 中野
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Idemitsu Unitech Co Ltd
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Idemitsu Unitech Co Ltd
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Abstract

To stably form a spouting part having a desired seal strength, and maintain sealability of a container.SOLUTION: A container includes a container body including a crushable recess and a flange part extending from a circumference of the recess, and a lid body that is joined to the container body in a joint region formed in the flange part. A weak seal part where a plurality of isolated non-joint regions are arrayed is formed in a partial section in a circumferential direction of the joint region.SELECTED DRAWING: Figure 1

Description

本発明は、容器に関する。 The present invention relates to a container.

指による押圧によってシール部の注出起点部が破壊されて液状物を注出することができる液状物収容容器に関する技術が、例えば特許文献1および特許文献2に記載されている。特許文献1には、開口部にフランジ部が形成された容器本体と、開口部を覆う蓋体とを有し、フランジ部に周状のシール部が形成され、シール部の一部に容器本体への指による押圧によって剥離して液状物を注出可能な注出起点部が形成される液状物収容容器が記載されている。特許文献2には、さらに容器本体が底部および壁部を有し、底部に押圧補助部として凸部が形成される液状物収容容器が記載されている。 Patent Document 1 and Patent Document 2 describe, for example, techniques relating to a liquid substance storage container in which a liquid substance storage container can be ejected by destroying the ejection starting point portion of the seal portion by pressing with a finger. Patent Document 1 has a container body having a flange portion formed in the opening and a lid body covering the opening, a circumferential seal portion is formed in the flange portion, and a container main body is partially formed in the seal portion. Described is a liquid material container in which a pouring starting point portion capable of pouring out the liquid material is formed by peeling off by pressing with a finger. Patent Document 2 further describes a liquid substance storage container in which the container body has a bottom portion and a wall portion, and a convex portion is formed on the bottom portion as a pressing auxiliary portion.

特開2017−65742号公報JP-A-2017-657742 特開2017−65744号公報JP-A-2017-65744

上記の特許文献1および特許文献2に記載された技術は、注出起点部を弱シールとする場合の作製方法として、易剥離コート剤をパターン塗布する方法、ヒートシールを2段階で行う(低温シールと高温シールで2回シールし、高温シールでは注出起点部をシールしない)方法、および注出起点部のシール幅を狭くする方法を挙げている。しかしながら、注出起点部に易剥離コート剤を塗布する方法は、従来の容器では必要とされない工程を追加することにより、生産コストの上昇に繋がる。また、容器成形と充填シール工程とを別の場所で行う場合、成形容器の輸送時にコート剤の剥がれが発生して弱シール部が作製されない可能性がある。一方、ヒートシールを2段階で行う方法は、シール機の種類によっては1段階のシールしかできないため適用できない。加えて、一般的なフラットシールではシール強度曲線の立ち上がりが急であり、安定的に弱シール部を作製するのは容易ではない。また、注出起点部のシール幅を狭くする方法は、初期剥離強度(剥がれ始めの強度)を変化させるものではないため、注出起点部でシールが剥がれ始める内圧強度では他の部分でもシールが剥がれ始めている。従って、シールが剥がれて液状物が注出されるのが注出起点部にならない可能性があり、不安定である。 In the above-mentioned techniques described in Patent Document 1 and Patent Document 2, a method of applying an easy-release coating agent in a pattern and a heat seal are performed in two steps as a production method when the injection starting point is a weak seal (low temperature). A method of sealing twice with a seal and a high-temperature seal, and a method of not sealing the injection start point with the high-temperature seal) and a method of narrowing the seal width of the injection start point are mentioned. However, the method of applying the easy-release coating agent to the injection starting point leads to an increase in production cost by adding a step that is not required in the conventional container. Further, when the container molding and the filling sealing step are performed at different places, the coating agent may peel off during the transportation of the molded container and the weakly sealed portion may not be produced. On the other hand, the method of performing heat sealing in two stages cannot be applied because only one stage of sealing can be performed depending on the type of sealing machine. In addition, in a general flat seal, the rise of the seal strength curve is steep, and it is not easy to stably produce a weak seal portion. In addition, since the method of narrowing the seal width at the injection start point does not change the initial peeling strength (strength at the start of peeling), the internal pressure strength at which the seal starts to peel at the injection start point causes the seal to peel off at other parts as well. It is starting to peel off. Therefore, the seal may be peeled off and the liquid material may not be the starting point of the injection, which is unstable.

また、特許文献1および特許文献2には、注出起点部でシール領域を内側に突出させた箇所に内圧上昇時の応力を集中させることによって、シール強度を変化させずに注出起点部を形成する方法も記載されている。しかしながら、容器形状や、シール部における注出起点部の位置によっては、このような方法による注出起点部の形成は困難である。具体的には、例えばシール部の窄められた平面形状の先端部分に上記の方法によって注出起点部を形成しようとした場合、内圧上昇時の応力は窄められた形状の先端部分ではなく、途中でシール部が内側に突出した部分に集中するため、意図された注出起点部ではない部分でシールが剥がれて液状物が抽出される可能性が高い。シール領域の突出をさらに大きくすれば任意の位置に注出起点部を形成できるが、シール領域がフランジ部から外れて容器の密封性が損なわれる。 Further, in Patent Document 1 and Patent Document 2, the injection starting point portion is provided without changing the sealing strength by concentrating the stress at the time of increasing the internal pressure at the portion where the seal region is projected inward at the dispensing starting point portion. The method of forming is also described. However, depending on the shape of the container and the position of the pouring starting point in the seal portion, it is difficult to form the pouring starting point by such a method. Specifically, for example, when an attempt is made to form an injection starting point portion at the tip portion of the constricted planar shape of the seal portion by the above method, the stress at the time of increasing the internal pressure is not the tip portion of the constricted shape. Since the seal portion is concentrated on the portion protruding inward on the way, there is a high possibility that the seal will be peeled off at a portion other than the intended injection starting point portion and the liquid substance will be extracted. If the protrusion of the seal region is further increased, the pouring starting point portion can be formed at an arbitrary position, but the seal region is separated from the flange portion and the sealing property of the container is impaired.

そこで、本発明は、安定して所望のシール強度の注出部を形成するとともに、容器の密封性を保つことが可能な容器を提供することを目的とする。 Therefore, an object of the present invention is to provide a container capable of stably forming a pouring portion having a desired sealing strength and maintaining the sealing property of the container.

[1]押し潰し可能な凹部および凹部の周縁から延出するフランジ部を含む容器本体と、フランジ部に形成される接合領域で容器本体に接合される蓋体とを備え、接合領域の周方向の一部の区間に、孤立した複数の非接合領域が配列された弱シール部が形成される容器。
[2]凹部は、平面形状の一部に形成された狭窄部を有し、弱シール部は、狭窄部に沿って形成された接合領域の狭窄部の先端部に形成される、[1]に記載の容器。
[3]非接合領域は、直径が0.46mm以上、2.0mm以下の円形領域を含む、[1]または[2]に記載の容器。
[4]弱シール部は、接合領域が周方向の内側に突出した部分に形成される、[1]から[3]のいずれか1項に記載の容器。
[5]容器本体は、引張試験における1%変位時の荷重が5N以上60N以下のシートで形成される、[1]から[4]のいずれか1項に記載の容器。
[6]凹部の底面における厚みは、30μm以上600μm以下である、[1]から[5]のいずれか1項に記載の容器。
[7]凹部および蓋体によって形成される内部空間の容積は3cm以上100cm以下である、[1]から[6]のいずれか1項に記載の容器。
[8]接合領域の全周長に対する弱シール部の長さの割合は4%以上35%以下である、[1]から[7]のいずれか1項に記載の容器。
[1] A container body including a crushable recess and a flange portion extending from the peripheral edge of the recess, and a lid body to be joined to the container body at a joining region formed in the flange portion are provided, and the circumferential direction of the joining region is provided. A container in which a weakly sealed portion in which a plurality of isolated non-junction regions are arranged is formed in a part of a section of the container.
[2] The recess has a narrowed portion formed in a part of the planar shape, and the weak seal portion is formed at the tip of the narrowed portion of the joint region formed along the narrowed portion [1]. The container described in.
[3] The container according to [1] or [2], wherein the non-bonded region includes a circular region having a diameter of 0.46 mm or more and 2.0 mm or less.
[4] The container according to any one of [1] to [3], wherein the weak seal portion is formed in a portion where a joint region protrudes inward in the circumferential direction.
[5] The container according to any one of [1] to [4], wherein the container body is formed of a sheet having a load of 5 N or more and 60 N or less at the time of 1% displacement in a tensile test.
[6] The container according to any one of [1] to [5], wherein the thickness of the bottom surface of the recess is 30 μm or more and 600 μm or less.
[7] The container according to any one of [1] to [6], wherein the volume of the internal space formed by the recess and the lid is 3 cm 3 or more and 100 cm 3 or less.
[8] The container according to any one of [1] to [7], wherein the ratio of the length of the weakly sealed portion to the total circumference of the joint region is 4% or more and 35% or less.

本発明によれば、安定して所望のシール強度の注出部を形成するとともに、容器の密封性を保つことができる。 According to the present invention, it is possible to stably form a pouring portion having a desired sealing strength and maintain the sealing property of the container.

本発明の一実施形態に係る容器の斜視図である。It is a perspective view of the container which concerns on one Embodiment of this invention. 図1に示す容器の容器本体の平面図および側面図である。It is a top view and a side view of the container body of the container shown in FIG. 図1に示す容器の平面図である。It is a top view of the container shown in FIG. 図1に示す容器の変形例を示す平面図である。It is a top view which shows the modification of the container shown in FIG. 図1に示す容器の弱シール部を拡大して示す図である。It is a figure which shows the weak seal part of the container shown in FIG. 1 enlarged. 変形例に係る容器の弱シール部を拡大して示す図である。It is an enlarged view which shows the weak seal part of the container which concerns on a modification.

以下に添付図面を参照しながら、本発明の好適な実施形態について詳細に説明する。なお、本明細書および図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複した説明を省略する。 Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, so that duplicate description will be omitted.

図1は本発明の一実施形態に係る容器の斜視図であり、図2は図1に示す容器の容器本体の平面図および側面図であり、図3は図1に示す容器の平面図である。図示されるように、容器100は、容器本体110と、蓋体130とを含む。容器本体110は、カップ状の凹部111と、凹部111の周縁から延出するフランジ部112とを含む。図示された例において、凹部111は略矩形の1辺に狭窄部111Aが形成された平面形状を有する。フランジ部112は、狭窄部111Aの両側では凹部111の周縁部から大きく延出し、全体として略矩形の平面形状を有する。他の例では、狭窄部111Aの両側を含めて、全体として均等な幅のフランジ部112が形成されてもよい。 1 is a perspective view of a container according to an embodiment of the present invention, FIG. 2 is a plan view and a side view of the container body of the container shown in FIG. 1, and FIG. 3 is a plan view of the container shown in FIG. is there. As shown, the container 100 includes a container body 110 and a lid 130. The container body 110 includes a cup-shaped recess 111 and a flange portion 112 extending from the peripheral edge of the recess 111. In the illustrated example, the recess 111 has a planar shape in which a narrowed portion 111A is formed on one side of a substantially rectangular shape. The flange portion 112 greatly extends from the peripheral edge portion of the recess 111 on both sides of the narrowed portion 111A, and has a substantially rectangular planar shape as a whole. In another example, flange portions 112 having a uniform width as a whole may be formed including both sides of the narrowed portion 111A.

蓋体130は、凹部111の開口を覆うフィルム状の部材であり、凹部111の周縁に沿ってフランジ部112に形成される接合領域140でヒートシールまたは超音波シールなどを用いて容器本体110に接合されることによって凹部111との間に内部空間SPを形成する。凹部111の平面形状における狭窄部111Aの周縁に沿って、接合領域140にも狭窄部140Aが形成される。狭窄部140Aの先端部には、後述するような弱シール部141が形成される。ユーザが容器本体110の凹部111を手で押圧して内部空間SPの内圧が上昇した場合、弱シール部141で接合領域140が剥離して内容物が注出される。 The lid 130 is a film-like member that covers the opening of the recess 111, and is formed on the container body 110 by using a heat seal, an ultrasonic seal, or the like at a joint region 140 formed in the flange portion 112 along the peripheral edge of the recess 111. By being joined, an internal space SP is formed between the recess 111 and the recess 111. A narrowed portion 140A is also formed in the joint region 140 along the peripheral edge of the narrowed portion 111A in the planar shape of the concave portion 111. A weak seal portion 141 as described later is formed at the tip portion of the narrowed portion 140A. When the user manually presses the recess 111 of the container body 110 to increase the internal pressure of the internal space SP, the joint region 140 is peeled off at the weak seal portion 141 and the contents are poured out.

ここで、図3に示されるように、弱シール部141が形成されない場合、内部空間SPの内圧が上昇したときに応力が集中するのは、狭窄部140Aの根元付近で接合領域140が周方向の内側に突出した部分(突出部140Bとして図示する)である。従って、例えば弱シール部141の代わりに接合領域140を内側に突出させた部分を形成しても、その部分ではなく突出部140Bで接合領域140が剥離する可能性がある。本実施形態では、弱シール部141を形成し、弱シール部141のシール強度を適切に調節することによって、意図された位置、すなわち狭窄部140Aの先端部で注出部を形成することができる。 Here, as shown in FIG. 3, when the weak seal portion 141 is not formed, the stress concentrates when the internal pressure of the internal space SP rises in the circumferential direction of the joint region 140 near the root of the narrowed portion 140A. It is a portion (shown as a protruding portion 140B) protruding inward. Therefore, for example, even if a portion in which the joint region 140 is projected inward is formed instead of the weak seal portion 141, the joint region 140 may be peeled off not at that portion but at the protruding portion 140B. In the present embodiment, by forming the weak seal portion 141 and appropriately adjusting the seal strength of the weak seal portion 141, the injection portion can be formed at the intended position, that is, at the tip portion of the narrowed portion 140A. ..

なお、図示された例では凹部111の平面形状が全体として略矩形であるが、他の例では円形などの他の形状であってもよい。狭窄部111Aは、上記の例では凹部111の平面形状の一部が狭められることによって形成されているが、他の例では凹部の平面形状の一部が突出させられることによって形成されてもよい。他の形状で狭窄部を形成する場合も、上記で図3を参照して説明したような内側への突出部に応力が集中する現象が発生するため、本実施形態のような弱シール部を形成する構成は有効である。 In the illustrated example, the planar shape of the recess 111 is substantially rectangular as a whole, but in other examples, it may be another shape such as a circle. In the above example, the narrowed portion 111A is formed by narrowing a part of the planar shape of the concave portion 111, but in other examples, it may be formed by projecting a part of the planar shape of the concave portion 111. .. Even when the narrowed portion is formed in another shape, the phenomenon that stress is concentrated on the inwardly protruding portion as described above with reference to FIG. 3 occurs. The configuration to be formed is valid.

また、例えば図4に示された例のように、弱シール部141を、接合領域140が周方向の内側に突出した部分(突出部140Cとして図示する)に形成してもよい。上記で図3を参照して説明したように、接合領域140が内側に突出した部分には内部空間SPの内圧が上昇したときに応力が集中するため、弱シール部141を突出部140Cに形成することによって、より安定的に意図された位置で注出部を形成することができる。図示された例では突出部140Cが狭窄部140Aの先端に形成されているが、例えば凹部111および接合領域140に狭窄部が形成されない場合にも、接合領域140が内側に突出した部分に弱シール部141を形成することによって同様の効果が得られる。 Further, for example, as in the example shown in FIG. 4, the weak seal portion 141 may be formed in a portion where the joint region 140 protrudes inward in the circumferential direction (shown as the protruding portion 140C). As described above with reference to FIG. 3, stress is concentrated on the portion where the joint region 140 protrudes inward when the internal pressure of the internal space SP rises, so that the weak seal portion 141 is formed on the protruding portion 140C. By doing so, the pouring portion can be formed more stably at the intended position. In the illustrated example, the protruding portion 140C is formed at the tip of the narrowed portion 140A, but even when the narrowed portion is not formed in the recess 111 and the joint region 140, for example, a weak seal is formed on the portion where the joint region 140 protrudes inward. A similar effect can be obtained by forming the portion 141.

本実施形態において、容器本体110および蓋体130は、容器の材料として利用可能な各種の樹脂材料、または樹脂材料の積層体によって形成される。樹脂材料には、必要に応じて無機材料などの添加物が加えられてもよい。容器本体110の凹部111は、押し潰し可能に形成される。本明細書において、凹部111が押し潰し可能であることは、ユーザが手で加えることが可能な通常の範囲の力による押圧で、凹部111を押し潰して内部空間SPの内圧を上昇させることが可能であることを意味する。 In the present embodiment, the container body 110 and the lid 130 are formed of various resin materials that can be used as the material of the container, or a laminate of the resin materials. Additives such as an inorganic material may be added to the resin material, if necessary. The recess 111 of the container body 110 is formed so as to be crushable. In the present specification, the fact that the recess 111 can be crushed means that the recess 111 can be crushed and the internal pressure of the internal space SP can be increased by pressing with a force in a normal range that can be manually applied by the user. It means that it is possible.

具体的には、例えば、凹部111を押し潰し可能に形成するために、容器本体110を形成するシートを、例えばポリエチレンの割合を多くしたり、ゴム成分を添加したりした軟質の樹脂材料で形成したり、シートの厚みを薄くしたりしてもよい。シートの軟らかさの指標の一例として、引張試験における1%変位時の荷重が5N〜60N程度であれば、押し潰しによる変形の初期における抵抗が小さく、凹部111は押し潰し可能であるといえる。上記の引張試験は、JIS K7161−1、JIS K7161−2、およびJIS K7127に準拠する。引張試験における引張速度は50mm/minである。試験片はJIS K7127の試験タイプ5であり、JIS K7100の2級の標準雰囲気で状態調節される。シートの薄さの指標の一例として、上記のような軟質の樹脂材料でシートを形成した場合において、シートから容器本体110を成形した後の凹部111の底面の厚みが30μm〜600μmであれば、凹部111は押し潰し可能であるといえる。 Specifically, for example, in order to form the recess 111 so that it can be crushed, the sheet forming the container body 110 is formed of, for example, a soft resin material in which the proportion of polyethylene is increased or a rubber component is added. Or the thickness of the sheet may be reduced. As an example of the index of the softness of the sheet, if the load at 1% displacement in the tensile test is about 5N to 60N, the resistance at the initial stage of deformation due to crushing is small, and it can be said that the recess 111 can be crushed. The above tensile test complies with JIS K7161-1, JIS K7161-2, and JIS K7127. The tensile speed in the tensile test is 50 mm / min. The test piece is JIS K7127 test type 5, and the state is adjusted in the standard atmosphere of JIS K7100 class 2. As an example of the index of the thinness of the sheet, when the sheet is formed of the soft resin material as described above, if the thickness of the bottom surface of the recess 111 after molding the container body 110 from the sheet is 30 μm to 600 μm, It can be said that the recess 111 can be crushed.

また、ユーザが片手で扱いやすいという観点からは、凹部111と蓋体130とによって形成される内部空間SPの容積は3cm〜100cm程度が好ましい。ユーザが容器100を保持した状態で安定して内容物を注出するためには、接合領域140の全周長に対する弱シール部141の長さの割合は4%〜35%程度にすることが好ましい。 Further, from the viewpoint of the user can easily handle with one hand, the volume of the internal space SP formed by the recess 111 and the lid 130 is preferably about 3 cm 3 100 cm 3. In order for the user to stably pour out the contents while holding the container 100, the ratio of the length of the weak seal portion 141 to the entire circumference of the joint region 140 should be about 4% to 35%. preferable.

図5は、図1に示す容器の弱シール部を拡大して示す図である。図示されているように、弱シール部141では、接合領域140の周方向の一部の区間に、孤立した複数の非接合領域141Aが配列される。図示された例において、非接合領域141Aは直径φの円形領域であり、中心間隔dで配列される。ここで、本明細書において、配列は、規則性をもった位置関係で形成されることを意味する。また、複数の非接合領域141Aが孤立していることは、それぞれの非接合領域141Aが接合領域140の内側および外側のいずれにも接しておらず、また互いにも接していないことを意味する。それぞれの非接合領域141Aは互いに接していないため、直径φと中心間隔dとの間にはd>φの関係が成り立つ。非接合領域141Aは、例えばシール盤に同形状の凹部を形成し、凹部では熱や超音波を加えないことによって形成される。非接合領域141Aの直径φは、特に限定されないが、例えば0.46mm以上、2.0mm以下であってもよい。 FIG. 5 is an enlarged view showing a weakly sealed portion of the container shown in FIG. As shown in the figure, in the weak seal portion 141, a plurality of isolated non-joining regions 141A are arranged in a part of the circumferential direction of the joining region 140. In the illustrated example, the non-junction region 141A is a circular region having a diameter of φ and is arranged at a center spacing d. Here, in the present specification, it means that the sequences are formed in a positional relationship with regularity. Further, the isolation of the plurality of non-junction regions 141A means that the respective non-junction regions 141A are not in contact with either the inside or the outside of the junction region 140, nor are they in contact with each other. Since the non-joining regions 141A are not in contact with each other, a relationship of d> φ is established between the diameter φ and the center spacing d. The non-bonded region 141A is formed, for example, by forming a recess having the same shape in the seal board and not applying heat or ultrasonic waves to the recess. The diameter φ of the non-bonded region 141A is not particularly limited, but may be, for example, 0.46 mm or more and 2.0 mm or less.

例えば、弱シール部141と接合領域140の他の部分とをいずれも同じ条件でシールした場合、弱シール部141では非接合領域141Aの分だけ他の部分よりも単位面積あたりの接合部分が小さく、従ってシール強度が相対的に低くなる。また、弱シール部141では、他の部分よりも単位面積あたりの接合部分が小さいため、シール強度のシール温度(または超音波の強さ)に対する変化率が相対的に緩やかになるため、シール温度によってシール強度を調節しやすく、安定して所望のシール強度、例えばユーザが手で押圧して内部空間SPの内圧を上昇させた場合にちょうど剥離する程度のシール強度の注出部を形成することができる。 For example, when the weak seal portion 141 and the other portion of the joint region 140 are both sealed under the same conditions, the joint portion per unit area of the weak seal portion 141 is smaller than that of the other portion by the amount of the non-bond region 141A. Therefore, the seal strength is relatively low. Further, in the weak seal portion 141, since the joint portion per unit area is smaller than the other portions, the rate of change of the seal strength with respect to the seal temperature (or the strength of ultrasonic waves) is relatively slow, so that the seal temperature It is easy to adjust the seal strength, and a stable and desired seal strength, for example, an injection portion having a seal strength that is just peeled off when the user presses it by hand to increase the internal pressure of the internal space SP is formed. Can be done.

図6は、変形例に係る容器の弱シール部を拡大して示す図である。図示されているように、変形例に係る容器の弱シール部141では、角丸V字形の非接合領域141Bが配列される。本変形例でも、非接合領域141Bは、互いに接することなく孤立している。非接合領域141Bも、例えばシール盤に同形状の凹部を形成し、凹部では熱や超音波を加えないことによって形成される。非接合領域141Bを形成する場合も、弱シール部141で他の部分よりも接合強度を低くする、あるいは弱シール部141で接合強度のシール温度(または超音波の強さ)に対する変化率を緩やかにすることができる。 FIG. 6 is an enlarged view showing a weakly sealed portion of the container according to the modified example. As shown, in the weakly sealed portion 141 of the container according to the modified example, the rounded V-shaped non-bonded region 141B is arranged. In this modification as well, the non-bonded regions 141B are isolated without being in contact with each other. The non-bonded region 141B is also formed, for example, by forming a recess having the same shape in the seal board and not applying heat or ultrasonic waves in the recess. Even when the non-bonding region 141B is formed, the weak sealing portion 141 lowers the bonding strength than other portions, or the weak sealing portion 141 slowly changes the bonding strength with respect to the sealing temperature (or ultrasonic strength). Can be.

上記で図6の例に示されたように、本実施形態では、弱シール部141において略円形に限らず様々な形状の非接合領域を配列することが可能である。図6の例に示された形状以外にも、多角形、または楕円形などの非接合領域を配列してもよい。また、非接合領域の形状はすべて同じでなくてもよく、例えば複数の種類の形状の非接合領域を配列することによって弱シール部141が形成されてもよい。いずれの場合も、非接合領域が互いに接することなく孤立していることによって、容器100の密封性を損なうことなく、上記のような単位面積あたりの接合部分が小さいことによる効果を得ることができる。 As shown in the example of FIG. 6 above, in the present embodiment, it is possible to arrange non-joining regions having various shapes, not limited to a substantially circular shape, in the weak seal portion 141. In addition to the shapes shown in the example of FIG. 6, non-junction regions such as polygons and ellipses may be arranged. Further, the shapes of the non-bonded regions do not all have to be the same, and for example, the weak seal portion 141 may be formed by arranging the non-bonded regions having a plurality of types of shapes. In either case, since the non-bonded regions are isolated without contacting each other, the effect of having a small bonded portion per unit area as described above can be obtained without impairing the sealing property of the container 100. ..

以下で説明する実施例では、上記で説明した一実施形態に係る容器100において、凹部111の平面形状を全体として長辺47.3mm、短辺34.3mmの矩形とし、短辺の一部を狭窄部111Aとしたものについて実験を実施した。容器本体110のシートグレードはSEP−130M、シート材厚は450μmである。接合領域140のシールは2段階で実施した。1段階目は、図5に示したような非接合領域141Aを形成するための凹部が形成されたシール盤で接合領域140の全体をシールした。2段階目は、弱シール部141以外の接合領域140について、凹部が形成されないシール盤でシールした。本実施例では、2段階目のシールで特許第5001962号公報に記載されたような樹脂溜まりを形成するために、シール面の内周縁側に膨出部が形成されたシール盤を使用した。弱シール部141以外の接合領域140では、樹脂溜まりが形成されることによって内部空間SPの内圧への耐性が向上している。 In the embodiment described below, in the container 100 according to the embodiment described above, the planar shape of the recess 111 is formed into a rectangle having a long side of 47.3 mm and a short side of 34.3 mm as a whole, and a part of the short side is formed. An experiment was carried out for a stenosis portion 111A. The sheet grade of the container body 110 is SEP-130M, and the sheet material thickness is 450 μm. Sealing of the joint region 140 was carried out in two steps. In the first stage, the entire bonded region 140 was sealed with a sealing machine having a recess for forming the non-bonded region 141A as shown in FIG. In the second stage, the joint region 140 other than the weakly sealed portion 141 was sealed with a sealing machine in which no recess was formed. In this embodiment, in order to form a resin pool as described in Japanese Patent No. 5001962 in the second stage sealing, a sealing machine having a bulging portion formed on the inner peripheral edge side of the sealing surface was used. In the joint region 140 other than the weak seal portion 141, the resistance of the internal space SP to the internal pressure is improved by forming a resin pool.

表1に、2つの例のそれぞれにおける1段階目および2段階目のシールの条件と、容器のパンク圧(接合領域のどこかで容器本体と蓋体との間が破断されたときの内部空間の内圧)と、注出部位置(弱シール部141に形成されたか否か)とを示す。 Table 1 shows the conditions for the first and second stages of sealing in each of the two examples, and the puncture pressure of the container (the internal space when the space between the container body and the lid is broken somewhere in the joint region). (Internal pressure of) and the position of the pouring portion (whether or not it was formed in the weak seal portion 141).

Figure 2021066479
Figure 2021066479

上記の結果から、本発明の実施形態に係る容器では、安定して弱シール部に注出部が形成されることがわかる。また、0.042MPa〜0,047MPaのパンク圧は、ユーザが容器本体110の凹部111を片手で押圧して内部空間SPの内圧を上昇させることによって容易に到達可能な圧力であり、ユーザが片手で容器から内容物を注出するのに適している。 From the above results, it can be seen that in the container according to the embodiment of the present invention, the pouring portion is stably formed in the weakly sealed portion. Further, the puncture pressure of 0.042 MPa to 0.047 MPa is a pressure that can be easily reached by the user pressing the recess 111 of the container body 110 with one hand to increase the internal pressure of the internal space SP, and the user can easily reach it with one hand. Suitable for pouring the contents out of the container.

以上、添付図面を参照しながら本発明の好適な実施形態について詳細に説明したが、本発明はこれらの例に限定されない。本発明の属する技術の分野の当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、これらについても、当然に本発明の技術的範囲に属するものと了解される。 Although preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that a person skilled in the art to which the present invention belongs can come up with various modifications or modifications within the scope of the technical ideas described in the claims. Of course, it is understood that it belongs to the technical scope of the present invention.

100…容器、110…容器本体、111…凹部、111A…狭窄部、112…フランジ部、130…蓋体、140…接合領域、140A…狭窄部、140B…突出部、141…弱シール部、141A…非接合領域、141B…非接合領域、SP…内部空間。
100 ... container, 110 ... container body, 111 ... recess, 111A ... constriction, 112 ... flange, 130 ... lid, 140 ... joint area, 140A ... constriction, 140B ... protrusion, 141 ... weak seal, 141A ... non-junction region, 141B ... non-junction region, SP ... internal space.

Claims (8)

押し潰し可能な凹部および前記凹部の周縁から延出するフランジ部を含む容器本体と、
前記フランジ部に形成される接合領域で前記容器本体に接合される蓋体とを備え、
前記接合領域の周方向の一部の区間に、孤立した複数の非接合領域が配列された弱シール部が形成される容器。
A container body including a crushable recess and a flange extending from the periphery of the recess,
A lid body to be joined to the container body at a joining region formed on the flange portion is provided.
A container in which a weakly sealed portion in which a plurality of isolated non-joining regions are arranged is formed in a part of a section in the circumferential direction of the joining region.
前記凹部は、平面形状の一部に形成された狭窄部を有し、
前記弱シール部は、前記狭窄部に沿って形成された前記接合領域の狭窄部の先端部に形成される、請求項1に記載の容器。
The recess has a constricted portion formed in a part of a planar shape, and has a constricted portion.
The container according to claim 1, wherein the weak seal portion is formed at the tip end portion of the narrowed portion of the joint region formed along the narrowed portion.
前記非接合領域は、直径が0.46mm以上、2.0mm以下の円形領域を含む、請求項1または請求項2に記載の容器。 The container according to claim 1 or 2, wherein the non-bonded region includes a circular region having a diameter of 0.46 mm or more and 2.0 mm or less. 前記弱シール部は、前記接合領域が周方向の内側に突出した部分に形成される、請求項1から請求項3のいずれか1項に記載の容器。 The container according to any one of claims 1 to 3, wherein the weak seal portion is formed in a portion where the joint region projects inward in the circumferential direction. 前記容器本体は、引張試験における1%変位時の荷重が5N以上60N以下のシートで形成される、請求項1から請求項4のいずれか1項に記載の容器。 The container according to any one of claims 1 to 4, wherein the container body is formed of a sheet having a load of 5 N or more and 60 N or less at the time of 1% displacement in a tensile test. 前記凹部の底面における厚みは、30μm以上600μm以下である、請求項1から請求項5のいずれか1項に記載の容器。 The container according to any one of claims 1 to 5, wherein the thickness of the bottom surface of the recess is 30 μm or more and 600 μm or less. 前記凹部および前記蓋体によって形成される内部空間の容積は3cm以上100cm以下である、請求項1から請求項6のいずれか1項に記載の容器。 The container according to any one of claims 1 to 6, wherein the volume of the internal space formed by the recess and the lid is 3 cm 3 or more and 100 cm 3 or less. 前記接合領域の全周長に対する前記弱シール部の長さの割合は4%以上35%以下である、請求項1から請求項7のいずれか1項に記載の容器。
The container according to any one of claims 1 to 7, wherein the ratio of the length of the weakly sealed portion to the total peripheral length of the joint region is 4% or more and 35% or less.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006298442A (en) * 2005-04-21 2006-11-02 Nichirei Foods:Kk Container and its sealing method
JP2013010557A (en) * 2011-06-30 2013-01-17 Idemitsu Unitech Co Ltd Container
JP2015009880A (en) * 2013-07-01 2015-01-19 大日本印刷株式会社 Container and seal bar
JP2017065743A (en) * 2015-09-30 2017-04-06 大日本印刷株式会社 Liquid storage container

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JP4414698B2 (en) 2003-07-14 2010-02-10 株式会社ディスペンパックジャパン Packaging for subdivision

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006298442A (en) * 2005-04-21 2006-11-02 Nichirei Foods:Kk Container and its sealing method
JP2013010557A (en) * 2011-06-30 2013-01-17 Idemitsu Unitech Co Ltd Container
JP2015009880A (en) * 2013-07-01 2015-01-19 大日本印刷株式会社 Container and seal bar
JP2017065743A (en) * 2015-09-30 2017-04-06 大日本印刷株式会社 Liquid storage container

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