JP2019189344A5

JP2019189344A5 -

Info

Publication number: JP2019189344A5
Application number: JP2018087686A
Authority: JP
Filing date: 2018-04-27
Publication date: 2020-02-27
Anticipated expiration: 2038-04-27

Description

すなわち、本発明は、蓋体と、上記蓋体で密閉されるポリエチレンテレフタレート製かつ平面視で円形状である容器本体と、からなる包装用容器であって、上記容器本体は、アーチ状に形成されて蓋体をシールするフランジ部を備え、上記フランジ部は、上記容器本体の内側に位置する内端縁部と、上記内端縁部より外側かつ上記内端縁部と同等の高さに位置する外端縁部と、上記内端縁部と上記外端縁部とから等距離に位置する頂点とを有し、上記内端縁部と上記外端縁部とをつなぐ仮想線から上記頂点までの垂直距離は、０．１ｍｍ〜０．７ｍｍであることを特徴とする。
That is, the present invention is a packaging container comprising a lid, and a container body made of polyethylene terephthalate and sealed in plan view and sealed in the lid, and the container body is formed in an arch shape. A flange portion for sealing the lid body, wherein the flange portion has an inner edge located inside the container body, and a height outside the inner edge and equal to the height of the inner edge. An outer edge located, and a vertex located equidistant from the inner edge and the outer edge, and the imaginary line connecting the inner edge and the outer edge. The vertical distance to the vertex is 0.1 mm to 0.7 mm.

換言すれば、本発明における包装用容器は、蓋体で密閉される容器本体の側壁部の周端縁全周から連続して外側に設けられたフランジ部を備え、上記フランジ部は、上記側壁部の周端縁に相当するフランジ内端縁部と、上記蓋体を接着するために上記フランジ内端縁部より外側に配置されたシール部と、上記フランジ内端縁部と同等の高さかつ上記シール部より外側に配置されたフランジ外端縁部とを有し、上記シール部は、上記フランジ部の全周かつ上記フランジ内端縁部から上記フランジ外端縁部に渡って上方向に湾曲したアーチ状に形成されていることを特徴とする。
上記シール部の頂点は、上記フランジ内端縁部と上記フランジ外端縁部とから等距離に位置し、上記シール部の頂点と上記フランジ内端縁部及び上記フランジ外端縁部との鉛直方向の距離は、０．１ｍｍ〜０．７ｍｍであることが望ましい。
In other words, the packaging container according to the present invention includes a flange portion continuously provided outside from the entire peripheral edge of the side wall portion of the container body sealed with the lid, and the flange portion includes the side wall. An inner edge of the flange corresponding to the peripheral edge of the portion, a seal portion disposed outside the inner edge of the flange for bonding the lid, and a height equivalent to the inner edge of the flange. And a flange outer edge disposed outside the seal portion, and the seal portion extends upward from the entire periphery of the flange portion and from the flange inner edge to the flange outer edge. It is characterized by being formed in a curved arch shape.
The vertex of the seal portion is located at an equal distance from the inner edge of the flange and the outer edge of the flange, and a vertical line between the vertex of the seal portion, the inner edge of the flange, and the outer edge of the flange. The distance in the direction is desirably 0.1 mm to 0.7 mm.

本体フランジ部３は、本体側壁部２の本体上側側壁部の周端縁に相当するフランジ内端縁部３１と、蓋体を接着するためにフランジ内端縁部３１より外側に配置されたシール部３２と、フランジ内端縁部３１と同等の高さかつシール部３２より外側に配置されたフランジ外端縁部３３とを有している。シール部３２は、本体フランジ部３の全周かつフランジ内端縁部３１からフランジ外端縁部３３に渡って上方向に湾曲したアーチ状に形成されている。換言すれば、本体フランジ部３は、アーチ状に形成されており、容器本体Ｍの内側に位置するフランジ内端縁部３１と、フランジ内端縁部３１より外側かつフランジ内端縁部３１と同等の高さに位置するフランジ外端縁部３３と、フランジ内端縁部３１とフランジ外端縁部３３とから等距離に位置する図２に示す頂点３２ａとを有し、また、シール部３２は、本体フランジ部３の幅方向全体から膨出している。
The main body flange portion 3 has a flange inner edge portion 31 corresponding to the peripheral edge of the main body upper side wall portion of the main body side wall portion 2 and a seal disposed outside the flange inner end edge portion 31 for bonding the lid. It has a portion 32 and a flange outer edge 33 located at the same height as the flange inner edge 31 and outside the seal portion 32. The seal portion 32 is formed in an arch shape which is curved upward from the entire inner periphery of the main body flange portion 3 and from the flange inner end portion 31 to the flange outer end portion 33. In other words, the main body flange portion 3 is formed in an arch shape, and has a flange inner end portion 31 located inside the container main body M, and a flange inner end portion 31 outside the flange inner end portion 31. It has a flange outer edge 33 located at the same height, a vertex 32a shown in FIG. 2 located equidistant from the flange inner edge 31 and the flange outer edge 33, and a sealing portion. 32 protrudes from the entire width of the main body flange 3.

図２は、容器本体Ｍを垂直方向から切断した場合の本体フランジ部３周辺を拡大した端面図である。図２に示すとおり、シール部３２の頂点３２ａは、フランジ内端縁部３１とフランジ外端縁部３３とから等距離に位置し、頂点３２ａからフランジ内端縁部３１及びフランジ外端縁部３３までの鉛直方向の距離ｄは、０．１ｍｍ〜０．７ｍｍであり、好ましくは０．２ｍｍ〜０．４ｍｍである。換言すれば、フランジ内端縁部３１とフランジ外端縁部３３とをつなぐ仮想線から頂点３２ａまでの垂直距離ｄは、０．１ｍｍ〜０．７ｍｍである。距離ｄが０．１ｍｍより小さいとシール部３２をアーチ状に成型しにくく、０．７ｍｍより大きいとシール部３２がフランジ内端縁部３１及びフランジ外端縁部３３に対して膨出し過ぎてシール強度のバラつきが発生してしまう。シール部３２のフランジ外端縁部３３側の傾斜角αとフランジ外端縁部３３側の傾斜角βは同等であることが好ましい。フランジ外端縁部３３側の傾斜角αとフランジ外端縁部３３側の傾斜角βとが同等であることによって、シール部３２をアーチ状に成型できるとともに、所望のシール強度を得ることができる。 FIG. 2 is an enlarged end view of the vicinity of the main body flange portion 3 when the container main body M is cut from the vertical direction. As shown in FIG. 2, the vertex 32a of the seal portion 32 is positioned equidistant from the inner flange edge 31 and the outer flange edge 33, and from the vertex 32a, the inner flange edge 31 and the outer flange edge. The distance d in the vertical direction up to 33 is 0.1 mm to 0.7 mm, preferably 0.2 mm to 0.4 mm. In other words, the vertical distance d from the imaginary line connecting the flange inner edge 31 and the flange outer edge 33 to the vertex 32a is 0.1 mm to 0.7 mm. If the distance d is smaller than 0.1 mm, it is difficult to mold the seal portion 32 into an arch shape. If the distance d is larger than 0.7 mm, the seal portion 32 bulges too much with respect to the flange inner edge portion 31 and the flange outer edge portion 33. Variation in seal strength occurs. It is preferable that the inclination angle α on the flange outer end edge 33 side of the seal portion 32 is equal to the inclination angle β on the flange outer end edge 33 side. Since the inclination angle α on the flange outer edge 33 side is equal to the inclination angle β on the flange outer edge 33 side, the seal portion 32 can be formed in an arch shape and a desired seal strength can be obtained. it can.

Claims

A packaging container comprising a lid and a container body made of polyethylene terephthalate and sealed in a plan view and sealed with the lid,
The container body includes a flange portion formed in an arch shape and sealing the lid,
The flange portion has an inner edge located inside the container body, an outer edge located outside the inner edge and at the same height as the inner edge, and the inner edge. Having a vertex positioned equidistant from the portion and the outer edge,
The vertical distance from the imaginary line connecting the inner edge and the outer edge to the vertex is 0.1 mm to 0.7 mm.
A packaging container characterized by the above-mentioned.

With a flange portion provided continuously outside from the entire peripheral edge of the side wall portion of the container body sealed by the lid,
The flange portion includes a flange inner edge portion corresponding to a peripheral edge of the side wall portion, a seal portion disposed outside the flange inner edge portion for bonding the lid, and a flange inner end portion. Having a flange outer end edge arranged at the same height as the edge and outside the seal portion,
The seal portion is formed in an arch shape curved upward from the entire periphery of the flange portion and from the inner edge of the flange to the outer edge of the flange.
A packaging container characterized by the above-mentioned.

The vertex of the seal portion is located equidistant from the flange inner edge and the flange outer edge,
The vertical distance between the vertex of the seal portion, the inner edge of the flange, and the outer edge of the flange is 0.1 mm to 0.7 mm.
The packaging container according to claim 2, wherein:

A sealing method of a packaging container for sealing a container body by bonding a lid body with a sealing machine,
The flange portion provided continuously outside from the entire peripheral edge of the side wall portion of the container body is used to bond the flange inner edge portion corresponding to the peripheral edge of the side wall portion and the lid. A seal portion disposed outside the flange inner edge portion, and a flange outer edge portion having a height equivalent to the flange inner edge portion and disposed outside the seal portion,
The seal portion is formed in an arch shape curved upward from the entire periphery of the flange portion and from the inner edge portion of the flange to the outer edge portion of the flange,
The vertex of the seal portion is located equidistant from the flange inner edge and the flange outer edge,
Pressing the seal portion from above the lid with the sealing machine until the height of the vertex of the seal portion is equal to the height of the flange inner edge portion and the flange outer edge portion,
The seal portion is adhered to the lid body in a plane over the entire circumference of the flange portion
A method for sealing a packaging container.