JP2008074486A

JP2008074486A - Gusset bag made of tubular film material which is opened in nearly round shape

Info

Publication number: JP2008074486A
Application number: JP2006283073A
Authority: JP
Inventors: Takeo Katayama; 武男片山
Original assignee: KYOEI HOSOU CORP; KYOEI-HOSOU CORP
Current assignee: KYOEI HOSOU CORP; KYOEI-HOSOU CORP
Priority date: 2006-09-19
Filing date: 2006-09-19
Publication date: 2008-04-03

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gusset bag made of a tubular film material which provides a nealy round opening shape when contents are filled. <P>SOLUTION: In the gusset bag 1 made of the tubular film material composing a longitudinal cross section by a front flat portion, a back flat portion and left and right folding portions, a three-piece lapped portion by one of the flat portions 1a, 1b and the folding protions 1c, 1d near the opening, in which the contents are filled, is melted and sealed to be a heat seal 3 in the whole width. The width of the other flat portion which does not composes the three-piece lapped portion is make wider than the width of the flat portion which composes the three-piece lapped portion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は内容物を充填する際に略円形の開口形状を呈するチューブ状フィルム素材のガセット袋に関するものである。 The present invention relates to a gusseted bag made of a tube-shaped film material that exhibits a substantially circular opening when filling the contents.

従来、チューブ状フィルム素材のガセット袋の開口形状は折込み部があるが故に、図１に示す如く略円形には開かなかった。複数のフィルムを重ねて溶着して製造するガセット袋においては、開口部付近の一方の平面部と折込み部の３枚を部分的に溶着または接着して略円形に開口させる発明が知られている（特許文献１）。
特開２００２−６８２１１号公報 Conventionally, the opening shape of a gusset bag made of a tube-shaped film material does not open in a substantially circular shape as shown in FIG. In a gusset bag manufactured by stacking and welding a plurality of films, an invention is known in which three planes, ie, one flat portion near an opening and a folded portion, are partially welded or bonded to open in a substantially circular shape. (Patent Document 1).
JP 2002-68211 A

そのために、次のような問題点があった。
（イ）開口する際に折込み部も開いてしまい開口形状が安定しない。
（ロ）内容物充填時、折込み部が充填装置に干渉する可能性がある。
（ハ）内容物充填後、密閉シールする際に折込み部の形を整える必要がある。
これらのことから作業効率の面で好ましくない状況があった。
本発明は以上の問題点を解決しようとするものである。Therefore, there are the following problems.
(A) When opening, the folding part also opens and the opening shape is not stable.
(B) When filling the contents, the folding part may interfere with the filling device.
(C) After filling the contents, it is necessary to arrange the shape of the fold when sealing hermetically.
For these reasons, there was an unfavorable situation in terms of work efficiency.
The present invention is intended to solve the above problems.

前面平面部と後面平面部および左右の折込み部にて長手方向の断面を構成するチューブ状フィルム素材のガセット袋において、内容物を充填する開口部付近の一方の平面部と折込み部による３枚重なり部を全幅に渡りヒートシールにより溶着したことを特徴とする略円形に開口するチューブ状フィルム素材のガセット袋である。 In a gusseted bag of tubular film material having a longitudinal cross-section composed of a front plane part, a rear plane part, and left and right folded parts, three sheets overlap by one folded part and one planar part near the opening filled with the contents It is a gusseted bag of tubular film material that opens in a substantially circular shape, characterized in that the part is welded over the entire width by heat sealing.

また、該３枚重ねヒートシール部を構成しないもう一方の平面部の幅が、３枚重ねヒートシール部を構成する一方の平面部の幅より広いことを特徴とする前述の略円形に開口するチューブ状フィルム素材のガセット袋である。 Further, the width of the other flat portion that does not constitute the three-layer heat seal portion is wider than the width of the one flat portion that constitutes the three-layer heat seal portion. It is a gusseted bag of tubular film material.

本発明によれば内容物を充填する際、ガセット袋の開口形状が略円形になるので充填装置に干渉することがなく、内容物充填後の密閉ヒートシール時においても折込み部の形を整える手間が省け大変効率的である。また、開口部付近で折込み部が全幅に渡りヒートシールされているので内容物が折込み部分に漏れ出ることも無い。 According to the present invention, when filling the contents, since the opening shape of the gusset bag is substantially circular, it does not interfere with the filling device, and the trouble of adjusting the shape of the folding portion even at the time of hermetic heat sealing after filling the contents Is very efficient. Further, since the folded portion is heat-sealed over the entire width in the vicinity of the opening, the content does not leak into the folded portion.

また、３枚重ねヒートシールを構成しない側の平面部の幅を、３枚重ねヒートシールを構成する側の平面部の幅より広くしたことにより、ヒートシール受け治具の幅を左右の３枚重なり部の幅より広く設定できるので、３枚重なり部全幅に渡るヒートシールを確実に行うことができる。 In addition, the width of the flat portion on the side not constituting the three-layer heat seal is made wider than the width of the flat portion on the side constituting the three-layer heat seal, thereby making the width of the heat seal receiving jig three Since it can be set wider than the width of the overlapping portion, heat sealing over the entire width of the three overlapping portions can be reliably performed.

以下、本発明の実施の形態を図１、図２、図３、図４にて説明する。
（イ）チューブ状フィルム素材のガセット袋１は、対抗する一対の平面部１ａ、１ｂおよび左右に対抗する一対の折込み部１ｃ、１ｄにて長手方向の基本断面を構成する（図１）。
（ロ）ガセット袋１の下辺はその全幅に渡りヒートシール２が施され閉じられている（図１）。
（ハ）上辺は開口部であり、端末付近に一方の平面部１ｂと左右側辺の折込み部１ｃ、１ｄの３枚はヒートシール３にて溶着する（図２）。
（ニ）このとき、平面部１ａの幅Ｌａは平面部１ｂの幅Ｌｂより広く設定され（図３）、前記３枚重ねヒートシール作業時、ヒートシールされる平面部１ｂの幅Ｌｂより幅の広い受け治具４をガセット袋１内に挿入するこ七を可能とならしめる（図４）。
（ホ）３枚重ねヒートシール押し治具５は３枚重なり部の幅よりわずかに広く、３枚重なり部全幅に渡ってヒートシールを行う（図４）。
（ヘ）本発明によるガセット袋１は内容物を充填した後、袋全幅に渡ってヒートシールにより密閉される。
本発明は以上の構成によりなっている。
本発明を使用するときは、ガセット袋１の開口部付近の平面部１ａ、１ｂを両手で広げればその開口形状が自然に略円形に開くので、充填装置との干渉もなく、
また、内容物重点時に折返し部に漏れ出すことも無く、内容物充填後は開口部付近の平面部１ａ、１ｂを合わせるだけで容易に口を閉じることができ、密閉ヒートシール作業を効率的に行うことができる。Hereinafter, embodiments of the present invention will be described with reference to FIG. 1, FIG. 2, FIG. 3, and FIG.
(A) The gusset bag 1 made of a tube-shaped film material forms a basic cross section in the longitudinal direction by a pair of opposing flat portions 1a, 1b and a pair of folded portions 1c, 1d opposing the left and right sides (FIG. 1).
(B) The lower side of the gusset bag 1 is closed with a heat seal 2 over its entire width (FIG. 1).
(C) The upper side is an opening, and the three flat portions 1b and the folded portions 1c and 1d on the left and right sides are welded by the heat seal 3 near the terminal (FIG. 2).
(D) At this time, the width La of the flat surface portion 1a is set wider than the width Lb of the flat surface portion 1b (FIG. 3), and is wider than the width Lb of the flat surface portion 1b to be heat-sealed during the three-layer heat sealing operation. The wide receiving jig 4 can be inserted into the gusset bag 1 (FIG. 4).
(E) The three-sheet heat-seal pushing jig 5 is slightly wider than the width of the three-sheet overlapping portion and performs heat sealing over the entire width of the three-sheet overlapping portion (FIG. 4).
(F) The gusset bag 1 according to the present invention is sealed by heat sealing over the entire width of the bag after filling the contents.
The present invention is configured as described above.
When using the present invention, if the flat portions 1a, 1b near the opening of the gusset bag 1 are spread with both hands, the opening shape naturally opens in a substantially circular shape, so there is no interference with the filling device,
In addition, there is no leakage to the folded part when the contents are important, and after filling the contents, the mouth can be easily closed just by aligning the flat portions 1a and 1b near the opening, and the sealed heat sealing work is efficiently performed. It can be carried out.

従来のガセット袋の斜視図Perspective view of a conventional gusset bag 本発明ガセット袋の斜視図Perspective view of the present invention gusset bag 本発明ガセット袋の断面図Cross section of the gusset bag of the present invention ３枚重ねヒートシール作業の簡略断面図Simplified cross-sectional view of three-layer heat sealing operation

Explanation of symbols

１チューブ状フィルム素材のガセット袋
１ａガセット袋を構成する一方の平面部
１ｂガセット袋を構成するもう一方の平面部
１ｃ左右側辺の折込み部を構成する一方の折返し部
１ｄ左右側辺の折込み部を構成するもう一方の折返し部
２底部のヒートシール
３開口部付近の３枚重ねヒートシール
４３枚重ねヒートシールの受け治具
５３枚重ねヒートシールの押し治具（ヒーター）
Ｌａ１ａの幅
Ｌｂ１ｂの幅DESCRIPTION OF SYMBOLS 1 Gusset bag of tubular film material 1a One plane part which comprises a gusset bag 1b The other plane part which comprises a gusset bag 1c One folding part which comprises the folding part of the left right side 1d The folding part of the left right side The other folded portion 2 constituting the bottom 2 Heat seal at the bottom 3 Three-layer heat seal in the vicinity of the opening 4 Three-layer heat seal receiving jig 5 Three-layer heat seal push jig (heater)
La 1a width Lb 1b width

Claims

In a gusseted bag of tubular film material having a longitudinal cross-section composed of a front plane part, a rear plane part, and left and right folded parts, three sheets overlap by one folded part and one planar part near the opening filled with the contents A gusseted bag of tubular film material that opens in a substantially circular shape, characterized in that the part is welded over the entire width by heat sealing.

2. The substantially circular shape according to claim 1, wherein the width of the other flat surface portion that does not constitute the three-layer heat seal portion is wider than the width of one flat portion that constitutes the three-layer heat seal portion. Gusset bag of tubular film material that opens.