JPS5833066Y2

JPS5833066Y2 - freestanding bag

Info

Publication number: JPS5833066Y2
Application number: JP1976062104U
Authority: JP
Inventors: 宏道稲垣
Original assignee: 日本特許管理株式会社
Priority date: 1976-05-14
Filing date: 1976-05-14
Publication date: 1983-07-23
Also published as: JPS52155112U

Description

【考案の詳細な説明】本考案は、四角形から戊る２枚のプラスチックフィルム
の底辺に沿って２つ折りにしたプラスチックフィルム製
の底フィルムを折り側が上に位置するようにして挿入し
、底辺及び左右両側辺に沿ってヒートシールを行うこと
により内容物を収容した際に、袋の底の形状が舟形にな
るように構成した袋に於いて、自立させた際に袋が安定
して立つように工夫したものである。[Detailed description of the invention] This invention involves inserting a bottom film made of plastic film that is folded in two along the bottom sides of two plastic films cut out from a square, with the folded side facing up, and By heat-sealing along the left and right sides, the bottom of the bag becomes boat-shaped when the contents are contained, so that the bag can stand stably when it stands on its own. It was devised.

第１図は従来におけるこの種袋の構造を示した正面図で
あって、第２図は第１図に於いてＡ−Ａ’線で切断した
分解側面図を示し、０１，０２が袋の表及び裏を構成す
る台形から成る２枚のプラスチックフィルム、０３が２
つ折りにしたプラスチックフィルム製の底フィルムを示
し、０４が底辺、０５，０６が側辺である。Fig. 1 is a front view showing the structure of a conventional bag of this type, and Fig. 2 is an exploded side view taken along line A-A' in Fig. 1, with 01 and 02 of the bag. Two plastic films consisting of trapezoids forming the front and back sides, 03 is 2
A folded bottom film made of plastic film is shown, with 04 being the bottom side and 05 and 06 being the sides.

上記のような従来の袋の場合、底辺０４は第１図からも
明らかなように、直線状（水平）を呈していた。In the case of the conventional bag as described above, the bottom side 04 was linear (horizontal) as is clear from FIG.

このため、第３，４図に示すように袋の中に内容物を挿
入し、袋の底が舟形に拡張した際に、袋の底辺の中央部
分０４’が袋の底辺０４と側辺０５，０６との交わる部
分に対して上方に浮いた（離れた）状態を呈し、袋は前
後方向に対してぐらつくという欠点があった。Therefore, when the contents are inserted into the bag and the bottom of the bag expands into a boat shape as shown in FIGS. , 06, the bag floats upward (separated) from the intersection, and the bag has the drawback of wobbling in the front-rear direction.

この理由は袋はその製袋工程に於いて、偏平な状態で加
工されるため、底辺０４が水平に形成しであると、内容
物の挿入により底フィルム０３が前後に拡張した際に表
、裏のプラスチックフィルム０１，０２は第４図に示す
ように傾斜し、垂直線上にある側辺０５，０６に対して
この傾斜した分底辺０４が水平面から離れるためである
。The reason for this is that bags are processed in a flat state during the bag making process, so if the bottom side 04 is formed horizontally, when the bottom film 03 expands back and forth due to the insertion of the contents, the bottom side 04 will be flat. This is because the back plastic films 01 and 02 are inclined as shown in FIG. 4, and the bottom side 04 is separated from the horizontal plane by the amount of this slope with respect to the side sides 05 and 06 which are on the vertical line.

本考案は斯かる欠点のない包装用袋を提案するのが目的
であり、その構成は第５．６．７図に示すように四角形
に形成した表及び裏に位置する２枚のプラスチックフィ
ルム１，２の底辺３，３′を外側に膨出せしめて円弧状
に形成すると共にこの２枚のプラスチックフィルム１，
２間であって底辺３，３′に沿って、２つ折りにしたプ
ラスチックフィルム製の底フィルム４を折り側１０が上
に位置するように、そして底辺５．５′が前記底辺３，
３′に沿って円弧状を呈するように形成して挿入し、２
枚のプラスチックフィルム１，２の底辺３，３′及び底
フィルム４の底辺５，５′に沿って夫々底辺ヒートシー
ル６．６′を行うと共に２枚のプラスチックフィルム１
，２の左右側辺７，７′に沿って側辺ヒートシール８，
８′を行って成るものである。The purpose of the present invention is to propose a packaging bag that does not have such drawbacks, and its structure consists of two plastic films 1 and 1 placed on the front and back sides formed in a rectangular shape, as shown in Figure 5.6.7. , 2 are bulged outward to form an arc shape, and these two plastic films 1,
The bottom film 4 made of plastic film is folded in two along the bottom sides 3 and 3' between the two sides, with the folded side 10 facing upward, and the bottom side 5.5' is placed along the bottom sides 3 and 3'.
3′ to form an arc shape and insert it.
Heat-seal the bottom sides 6 and 6' along the bottom sides 3 and 3' of the plastic films 1 and 2 and the bottom sides 5 and 5' of the bottom film 4, respectively.
, 2 along the left and right sides 7, 7' of the side heat seals 8,
8'.

袋を上記のように構成すると、第６図に示すように袋内
に内容物を挿入し、ロシール９を横−直線状に行うと、
袋の底において底フィルム４はその２つ折りにした部分
が前後に拡張し、この拡張は底の中央において最大で、
側辺７，７′に近づくに従って最小となり、平面で見た
場合に底の形状（底フィルム４の形状）は所謂舟形とな
り、底辺３，３′は平面で見た場合に楕円形となる。When the bag is constructed as described above, the contents are inserted into the bag as shown in FIG. 6, and the seal 9 is performed horizontally and linearly.
At the bottom of the bag, the folded portion of the bottom film 4 expands back and forth, and this expansion is maximum at the center of the bottom.
The shape becomes smallest as it approaches the sides 7, 7', and the shape of the bottom (the shape of the bottom film 4) becomes a so-called boat shape when viewed from above, and the bottom sides 3, 3' become elliptical when seen from above.

又、表面及び裏面に位置するプラスチックフィルム１，
２はその底辺３，３′が円弧状に膨出しているため、前
記のように底フィルム４が舟形で底辺３゜３′が楕円形
に拡張し、表面及び裏面のプラスチックフィルム１，２
が第７図に示すように八字形に拡張しても底辺３，３′
における中央部分Ｐ、Ｐ’は底辺３．３′と側辺７，７
′との交わる点を含む水平面と同一となり、中央部分Ｐ
、Ｐ’が水平面から離れることはない。In addition, plastic films 1 located on the front and back surfaces,
2 has its base sides 3 and 3' bulging out in an arc shape, so that the bottom film 4 is boat-shaped and its base side 3°3' expands into an oval shape as described above, and the plastic films 1 and 2 on the front and back sides are shaped like a boat.
Even if expanded into a figure-eight shape as shown in Figure 7, the bases are 3, 3'
The central part P, P' in is the base 3.3' and the side 7,7
′, and the central part P
, P' never leave the horizontal plane.

なお、底辺３，３′を円弧状に形成する際に、あらかじ
めこの円弧の曲率を底の拡大との関係で計算し、離れる
ことがないようにすることは勿論である。In addition, when forming the bases 3 and 3' into arc shapes, it goes without saying that the curvature of these arcs should be calculated in advance in relation to the expansion of the bases to ensure that they do not diverge.

よって本考案によれば、袋内に内容物を挿入し、口を封
じた際に、底の底辺３，３′は楕円形に拡張し、この楕
円形の底辺全体がテーブル、棚などの載置面に接触する
ので、袋を比較的剛性のある材質で製袋した際には、袋
は安定して直立する利点がある。Therefore, according to the present invention, when the contents are inserted into the bag and the mouth is sealed, the base sides 3 and 3' of the bottom expand into an oval shape, and the entire base of this oval shape can be used for placing tables, shelves, etc. Since it comes into contact with the placing surface, there is an advantage that when the bag is made of a relatively rigid material, the bag can stably stand upright.

[Brief explanation of the drawing]

第１図は従来の袋の正面図、第２図はＡ−Ａ’線線分離
断面図第３図は第１図の袋に内容物を挿入し、口を封じ
た状態の正面図、第４図はＢ−Ｂ′線断面図、第５図は
本考案に係る袋の正面図、第６図は内容物を挿入した本
考案袋の斜視図、第７図は内容物を挿入した本考案袋の
中央縦断側面図である。１・・・・・・表面プラスチックフィルム、２・・・・
・・裏面プラスチックフィルム、３，３′・・・・・・
底辺、４・・・・・・底フィルム、５，５′・・・・・
・底辺、６．６′・・・・・・底辺ヒートシール、７゜
７′・・・・・・側辺、８，８′・・・・・・側辺ヒー
トシール、Ｐ。Ｐ’・・・・・中央部分。Fig. 1 is a front view of a conventional bag, Fig. 2 is a cross-sectional view taken along the line A-A', and Fig. 3 is a front view of the bag shown in Fig. 1 with the contents inserted and the mouth sealed. Figure 4 is a sectional view taken along the line B-B', Figure 5 is a front view of the bag according to the present invention, Figure 6 is a perspective view of the bag of the present invention with the contents inserted, and Figure 7 is a book with the contents inserted. FIG. 3 is a central vertical sectional side view of the invented bag. 1...Surface plastic film, 2...
...Back plastic film, 3,3'...
Bottom side, 4...Bottom film, 5,5'...
・Base, 6.6'...Bottom heat seal, 7°7'...Side edge, 8,8'...Side heat seal, P. P'... Central part.

Claims

[Claims for Utility Model Registration] Two plastic films formed in a rectangular shape located on the front and back sides1. . The bottom sides 3 and 3' of 2 were bulged outward to form an arc shape, and between the two plastic films 1 and 2, it was folded in half along the bottom sides 3 and 3'. A bottom film 4 made of plastic film is inserted so that the folded side faces upward and the bottom sides 5 and 5' form an arc along the bottom sides 3 and 3', and the two plastic films are inserted. Heat seal the bottom sides 6 along the bottom sides 3 and 3' of 1 and 2 and the bottom sides 5 and 5' of the diagonal film 4, respectively.
．． 6' and two plastic films 1 and 2.
Side heat seals 8, 8' along left and right sides 7.7' of
A plastic film bag made by