JP4797420B2 - Gusset type packaging bag - Google Patents

Gusset type packaging bag Download PDF

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JP4797420B2
JP4797420B2 JP2005100799A JP2005100799A JP4797420B2 JP 4797420 B2 JP4797420 B2 JP 4797420B2 JP 2005100799 A JP2005100799 A JP 2005100799A JP 2005100799 A JP2005100799 A JP 2005100799A JP 4797420 B2 JP4797420 B2 JP 4797420B2
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packaging bag
gusset
type packaging
bonding portion
thermal bonding
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JP2006282179A (en
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隆亮 辻本
徹 鈴木
恭介 鈴木
剛孝 浜田
博見 横岩
伸一 上西
均 京谷
憲司 服部
季世 藤本
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Description

本発明は、開封が容易なガセットタイプ包装袋に関するものである。   The present invention relates to a gusset type packaging bag that can be easily opened.

従来から、内容物の収容容積〔包装内容積（ｃｍ3）／包装材面積（ｃｍ2）比〕が大きく、内容物の単位収容量当たりの包装材コストが安価であり、また、立てた状態で陳列することができるためにスペース的にも有利であり商品見栄えが良いなどの理由から収容量の多い内容物に好適な袋としてガセットタイプ包装袋が用いられている。 Conventionally, the content storage volume [packaging internal volume (cm 3 ) / packaging material area (cm 2 ) ratio] is large, the packaging material cost per unit content of the content is low, and the upright state The gusset-type packaging bag is used as a bag suitable for a large amount of contents because it is advantageous in terms of space since it can be displayed on the market and the product looks good.

しかし、ガセットタイプ包装袋は、両側部に横断面Ｖ字状の折込部があり、この折込部を外した折込部と直交する端縁にＶ字状やＩ字状の切欠や切込を設け、これを開封開始手段として袋を開封するように構成されている。この開封開始手段により袋を開封すると、縦方向（折込部に平行な方向）に不規則な形状に開口するために、粉体や顆粒状等の内容物の場合には、開封時に内容物が零れて周囲に飛散するといった問題や使用後に残った内容物を保管する際には、開封した開口を塞ぐことが結構煩雑であるといった問題があった。   However, gusset-type packaging bags have folds with a V-shaped cross section on both sides, and V-shaped and I-shaped cuts and cuts are provided at the edges perpendicular to the fold-off part from which this fold-up part is removed. The bag is opened using this as an opening start means. When the bag is opened by this opening start means, it opens in an irregular shape in the longitudinal direction (direction parallel to the folding part). In the case of contents such as powder or granules, the contents are not There are problems such as spilling and scattering to the surroundings, and when storing contents remaining after use, there is a problem that it is quite complicated to close the opened opening.

そこで、上記問題を解決するガセットタイプ包装袋が提案されている（たとえば、特許文献１参照）。特許文献１記載の考案は、ガセットタイプ包装袋を横方向（折込部に直交する方向）に開封する工夫が盛込まれた提案であって、袋体の横方向側部に側シール部を設けると共に該側シール部に開口シール部の内側を横方向に引き裂き得るノッチを設け、ノッチの反対側に位置する折り込み部にノッチから延びる引き裂き予定線上における折り込み内部先端角部と表裏面とをスポット状のヒートシール部で溶着して一体化した構成からなるガセットタイプ包装袋であって、このように構成することによりガセットタイプ包装袋を横方向（折込部に直交する方向）にほぼ一定の形状に開口することができて粉体や顆粒状等の内容物の場合においても開封時に内容物が零れる虞がなく、使用後に残った内容物を保管する際にも開封した開口を容易に塞ぐことができるというものである。   Then, the gusset type packaging bag which solves the said problem is proposed (for example, refer patent document 1). The idea described in Patent Document 1 is a proposal in which a device for opening a gusset-type packaging bag in a lateral direction (a direction perpendicular to the folding portion) is incorporated, and a side seal portion is provided on a lateral side portion of the bag body. In addition, the side seal portion is provided with a notch capable of tearing the inside of the opening seal portion in the lateral direction, and the folded inner tip corner portion and the front and back surfaces on the planned tear line extending from the notch are spot-like at the folding portion located on the opposite side of the notch It is a gusset type packaging bag having a structure integrated by welding at the heat seal portion of the gusset, and the gusset type packaging bag is formed in this way so that the gusset type packaging bag has a substantially constant shape in the lateral direction (direction perpendicular to the folding portion). Even in the case of contents such as powders and granules that can be opened, there is no risk of the contents spilling at the time of opening, and the opened opening can be easily stored when storing the contents remaining after use Gukoto is that it is.

しかしながら、本発明者が実際に特許文献１記載の考案に基づいて袋を試作して引き裂き開封を試みたところ、開封側の折り込み先端角部までは容易に引き裂くことができるが、さらに引き裂いて引き裂き先端がスポット状のヒートシール部の折り込み内部先端角部に至ると折り込み内部先端角部が引き裂き時に大きな抗引き裂き部となり、スムーズに引き裂くことができなかった。
実開平５−２６８３８号公報 However, when the inventor actually tried to tear and unseal the bag based on the idea described in Patent Document 1, it can be easily torn up to the corner of the fold end on the unsealing side. When the tip reached the folded internal tip corner of the spot-like heat seal portion, the folded internal tip corner became a large anti-tear portion at the time of tearing, and could not be torn smoothly.
Japanese Utility Model Publication No. 5-26838

そこで本発明は、容易に開封することができて、ほぼ一定の形状の開口を得ることができ、開封した側の折込部を外側に引き出して注ぎ口とし、内容物を容易に取り出すことができるガセットタイプ包装袋を提供することである。   Therefore, the present invention can be easily opened, an opening having a substantially constant shape can be obtained, and the folded portion on the opened side can be pulled out to serve as a spout to easily take out the contents. It is to provide a gusset type packaging bag.

本発明者は、上記課題を達成するために、請求項１記載の本発明は、少なくとも基材層と易剥離性を有する熱接着性樹脂からなる内層とを備えた矩形状積層体の対向する端縁を前記内層同士が当接するように重ね合わせて熱接着して合掌シール部を有する筒状体となし、該筒状体の対向する両側部に横断面Ｖ字状の折込部を設け、上下開口部を上下端熱接着部で密封したガセットタイプ包装袋において、前記上端熱接着部が前記一方の折込部側に前記上開口部の端縁から前記下開口部側に未接着部を有するように前記一方の折込部側の側端縁から前記他方の折込部側に延びる第１上端熱接着部と、該第１上端熱接着部の終端に連接して前記他方の折込部側の側端縁に延びる第２上端熱接着部と該第２上端熱接着部に連接して前記上開口部の端縁に延びる第３上端熱接着部とからなり、前記第１上端熱接着部のみを剥離することを特徴とするものである。 In order to achieve the above object, the inventor of the present invention is directed to a rectangular laminate including at least a base material layer and an inner layer made of an easily peelable thermoadhesive resin. The end edges are overlapped so that the inner layers are in contact with each other and thermally bonded to form a cylindrical body having a palm seal part, and provided with folded portions with a V-shaped cross section on opposite sides of the cylindrical body, In the gusset-type packaging bag in which the upper and lower openings are sealed by the upper and lower end heat bonding portions, the upper end heat bonding portion has an unbonded portion on the one opening portion side from the edge of the upper opening portion to the lower opening portion side. The first upper end thermal bonding portion extending from the side edge on the one folding portion side to the other folding portion side, and the side on the other folding portion side connected to the terminal end of the first upper end thermal bonding portion A second upper end thermal bonding portion extending to an edge and an end of the upper opening connected to the second upper end thermal bonding portion; And a third upper heat seal portion extending, is characterized in that peeling only the first upper heat-bonding portion.

また、請求項２記載の本発明は、請求項１記載のガセットタイプ包装袋において、前記第１上端熱接着部が線状熱接着部であることを特徴とするものである。   Moreover, the present invention described in claim 2 is characterized in that, in the gusset-type packaging bag described in claim 1, the first upper end heat bonding portion is a linear heat bonding portion.

また、請求項３記載の本発明は、請求項１、２のいずれかに記載のガセットタイプ包装袋において、前記第１上端接着部が前記上開口部側に凸部を有する略ヘの字状の熱接着部であることを特徴とするものである。   Moreover, the present invention according to claim 3 is the gusset type packaging bag according to any one of claims 1 and 2, wherein the first upper-end adhesive portion has a convex shape on the upper opening side. It is a heat bonding part of this.

また、請求項４記載の本発明は、請求項１記載のガセットタイプ包装袋において、前記未接着部が開封部であることを明示する表示部が外側から見える位置に施されていることを特徴とするものである。   Further, the present invention according to claim 4 is characterized in that, in the gusset-type packaging bag according to claim 1, the display portion clearly indicating that the unbonded portion is an unsealed portion is provided at a position where it can be seen from the outside. It is what.

本発明のガセットタイプ包装袋は、内層に易剥離性を有する熱接着性樹脂を用い、上開口部側に開封時に手指を挿入して摘むことができる未接着部を設けたことにより、この部分を摘んで容易に剥離して開封することができ、剥離した側の折込部を外側に引き出して注ぎ口とし、この注ぎ口から内容物を容易に取り出すことができるという効果を奏し、また、開封する開口の大きさは第１上端接着部の前記一方の折込部側の側端縁から前記他方の折込部側に延びる長さで調節することができ、所望の大きさの開口を容易に得ることができるという効果を奏し、また、第１上端熱接着部を線状熱接着部、さらに好ましくは上開口部側に凸部を有する略ヘの字状の熱接着部とすることにより、小さい力で容易に剥離して開封することができるという効果を奏するものである。   The gusset-type packaging bag of the present invention uses an easily peelable heat-adhesive resin for the inner layer, and this part is provided by providing an unadhered part on the upper opening side where a finger can be inserted and picked when opened. Can be easily peeled off and opened, and the folded part on the peeled side is pulled out to make a spout, and the contents can be easily taken out from this spout. The size of the opening to be adjusted can be adjusted by the length extending from the side edge on the one folding part side of the first upper end adhesive part to the other folding part side, and an opening of a desired size can be easily obtained In addition, the first upper end thermal bonding portion is made into a linear thermal bonding portion, more preferably a substantially U-shaped thermal bonding portion having a convex portion on the upper opening side. It can be easily peeled and opened by force It is intended to achieve the effect.

図１は本発明にかかるガセットタイプ包装袋の第１実施形態を示す要部正面図、図２は図１の上開口部を図解的に示す概略平面図、図３は本発明にかかるガセットタイプ包装袋の第２実施形態を示す要部正面図、図４は本発明にかかるガセットタイプ包装袋の第３実施形態を示す要部正面図、図５は本発明にかかるガセットタイプ包装袋の第４実施形態を示す要部正面図であり、図中の１，１’，１”，１’’’はガセットタイプ包装袋、２は合掌シール部、３は上端熱接着部、４は表示部、３０，３０’，３０”は第１上端熱接着部、３１，３１’は第２上端熱接着部、３２，３２’は第３上端熱接着部、Ａ，Ｂは折込部、Ｃは未接着部をそれぞれ示す。   FIG. 1 is a front view of an essential part showing a first embodiment of a gusset type packaging bag according to the present invention, FIG. 2 is a schematic plan view schematically showing the upper opening of FIG. 1, and FIG. 3 is a gusset type according to the present invention. The principal part front view which shows 2nd Embodiment of a packaging bag, FIG. 4 is a principal part front view which shows 3rd Embodiment of the gusset type packaging bag concerning this invention, FIG. 5 is the 1st of the gusset type packaging bag concerning this invention. It is a principal part front view which shows 4 embodiment, 1, 1 ', 1 ", 1'" in a figure is a gusset type packaging bag, 2 is a joint seal part, 3 is an upper end heat bonding part, 4 is a display part , 30, 30 ′, 30 ″ are the first upper end heat-bonded portions, 31, 31 ′ are the second upper end heat-bonded portions, 32, 32 ′ are the third upper end heat-bonded portions, A, B are the folding portions, and C is not Each adhesion part is shown.

図１は本発明にかかるガセットタイプ包装袋の第１実施形態を示す要部正面図、図２は図１の上開口部を図解的に示す概略平面図であって、ガセットタイプ包装袋１は少なくとも基材層と易剥離性を有する熱接着性樹脂からなる内層とを備えた矩形状積層体の対向する端縁を前記内層同士が当接するように重ね合わせて熱接着した合掌シール部２を有する筒状体となし、該筒状体の対向する両側部に横断面Ｖ字状の折込部Ａ、Ｂを設け、上下開口部を上端熱接着部３と下端熱接着部（図示せず）で密封したものであって、前記上端熱接着部３が前記折込部Ａ側に前記上開口部の端縁から前記下開口部側に未接着部Ｃを有するように前記一方の折込部側の側端縁から前記他方の折込部側に延びる帯状の第１上端熱接着部３０と、該第１上端熱接着部３０の終端に連接して前記他方の折込部側の側端縁に延びる第２上端熱接着部３１と該第２上端熱接着部３１に連接して前記上開口部の端縁に延びる第３上端熱接着部３２とからなるものである。   FIG. 1 is a front view of an essential part showing a first embodiment of a gusset type packaging bag according to the present invention. FIG. 2 is a schematic plan view schematically showing an upper opening of FIG. A palm seal portion 2 that is heat-bonded by superimposing the opposing edges of a rectangular laminate including at least a base material layer and an inner layer made of an easily peelable thermoadhesive resin so that the inner layers are in contact with each other. It has a cylindrical body, and is provided with folding parts A and B having a V-shaped cross section on opposite sides of the cylindrical body, and the upper and lower opening portions are the upper end thermal bonding portion 3 and the lower end thermal bonding portion (not shown). In which the upper end thermal bonding portion 3 has a non-bonded portion C on the lower opening side from the edge of the upper opening portion on the folding portion A side. A band-shaped first upper end thermal bonding portion 30 extending from the side edge toward the other folded portion, and the first upper end thermal contact A second upper end thermal bonding portion 31 extending to the side edge on the other folding portion side and connected to the terminal end of the portion 30; and a second upper end thermal bonding portion 31 extending to the edge of the upper opening portion. It consists of three upper end thermal bonding portions 32.

図３は本発明にかかるガセットタイプ包装袋の第２実施形態を示す要部正面図であって、ガセットタイプ包装袋１’は第１実施形態で示した前記第１上端熱接着部３０を帯状から幅狭の線状に代えた第１上端熱接着部３０’としたものであり、これに伴って第２上端熱接着部を符号３１’、第３上端熱接着部を符号３２’、上端熱接着部を符号３’で表わしたものであり、これ以外は第１実施形態のガセットタイプ包装袋１と同じである。   FIG. 3 is a front view of an essential part showing a second embodiment of the gusset type packaging bag according to the present invention, and the gusset type packaging bag 1 ′ has a strip shape of the first upper end heat bonding portion 30 shown in the first embodiment. The first upper end heat-bonding portion 30 ′ is replaced by a narrow linear shape, and accordingly, the second upper-end heat bonding portion is denoted by reference numeral 31 ′, the third upper-end heat bonding portion is denoted by reference numeral 32 ′, and the upper end. The thermal bonding part is represented by reference numeral 3 ', and the other parts are the same as those of the gusset type packaging bag 1 of the first embodiment.

図４は本発明にかかるガセットタイプ包装袋の第３実施形態を示す要部正面図であって、ガセットタイプ包装袋１”は第２実施形態で示した線状の第１上端熱接着部３０’に代えて、上開口部側に凸部を有する略ヘの字状の第１上端熱接着部３０”としたものであり、これに伴って上端熱接着部を符号３”で表わしたものであり、これ以外は第２実施形態のガセットタイプ包装袋１’と同じである。   FIG. 4 is a main part front view showing a third embodiment of the gusset-type packaging bag according to the present invention, and the gusset-type packaging bag 1 ″ is the linear first upper end heat bonding portion 30 shown in the second embodiment. Instead of ', the first upper end heat-bonding portion 30 "having a convex shape on the upper opening side is used, and accordingly, the upper-end heat bonding portion is represented by reference numeral 3". Other than this, it is the same as the gusset type packaging bag 1 ′ of the second embodiment.

このように構成したガセットタイプ包装袋１、１’、１”は、前記未接着部Ｃの対向する部分（積層体）を両手の手指で摘んで互いに乖離する方向に引っ張ることにより、前記第１上端熱接着部３０、３０’、３０”が内層間の界面および／ないし内層の層間で凝集剥離するために、容易に開封することができ、内容物を取り出す際には、前記折込部Ａを外側に引き出すことにより注ぎ口が形成され、この注ぎ口から他の容器等に内容物を容易に取り出すことができる。開封のし易さとしては、第１実施形態から第３実施形態に降順するにしたがって、開封し易いガセットタイプ包装袋とすることができる。   The gusset-type packaging bags 1, 1 ′, 1 ″ configured as described above are formed by pulling the opposing portions (laminates) of the unbonded portion C with fingers of both hands and pulling them away from each other. Since the upper end heat bonding portions 30, 30 ′, 30 ″ are aggregated and separated at the interface between the inner layers and / or between the inner layers, they can be easily opened. A spout is formed by pulling out the outside, and the contents can be easily taken out from this spout into another container or the like. As ease of opening, it can be set as a gusset type packaging bag which is easy to open as descending from the first embodiment to the third embodiment.

図５は本発明にかかるガセットタイプ包装袋の第４実施形態を示す要部正面図であって、ガセットタイプ包装袋１’’’は開封するために手指で摘む箇所と開封する部分を示す「この部分を摘んで矢印の示す部分を開封して下さい」なる表示部４が印刷ないし印字により袋に設けられているものであって、このように構成することにより、すべての使用者に開封すべき方法と箇所を明確にすることができる。なお、図５は図１に示す第１実施形態のガセットタイプ包装袋１に設けたものを示したが、これに限るものでないことは当然のことである。   FIG. 5 is a front view of an essential part showing a fourth embodiment of a gusset type packaging bag according to the present invention, and a gusset type packaging bag 1 ′ ″ shows a portion to be picked with a finger to open and a portion to be opened. Open the part indicated by the arrow by picking this part. "The display part 4 is provided on the bag by printing or printing, and is configured to be opened by all users. The method and location to be clarified can be clarified. In addition, although FIG. 5 showed what was provided in the gusset type packaging bag 1 of 1st Embodiment shown in FIG. 1, it is natural that it is not restricted to this.

なお、実施例においては、包装袋のセンターに合掌シール部２を有するオーソドックスなガセットタイプ包装袋を示したが、本発明はこれに限るものではなく、たとえば、合掌シール部２を折込部Ａの一方の側端縁に位置するように構成してもよいし、また、この場合において、折込部Ａの他方の側端縁（稜線）と折込部Ｂの２つの側端縁（稜線）を熱接着して４つの側端縁（稜線）に支柱を設けたような構成としてもよいし、また、実施例において、折込部ＡとＢとで形成される４つの側端縁（稜線）を熱接着して、上記したと同様に４つの側端縁（稜線）に支柱を設けたような構成としてもよく、このように４つの側端縁（稜線）に支柱を設けたような構成とすることにより、自立性に優れた見栄えのよいガセットタイプ包装袋とすることができる。   In addition, in the Example, although the orthodox gusset type packaging bag which has the joint seal part 2 in the center of the packaging bag was shown, this invention is not limited to this, For example, the joint seal part 2 is inserted into the folding part A. You may comprise so that it may be located in one side edge, and in this case, the other side edge (ridgeline) of the folding part A and two side edges (ridgeline) of the folding part B are heated. It is good also as a structure which provided the support | pillar to four side edge (ridgeline) by adhere | attaching, and also in an Example, four side edge (ridgeline) formed by the folding parts A and B is heat-processed. As described above, it is possible to adopt a configuration in which pillars are provided on the four side edges (ridge lines) in the same manner as described above, and in this manner, a structure in which pillars are provided on the four side edges (ridge lines). Therefore, it should be a gusset-type packaging bag with excellent independence and good appearance. Can.

次に、本発明のガセットタイプ包装袋に用いる積層体について説明する。本発明のガセット包装袋に用いる積層体の基材層としては、機械的、物理的、化学的等において優れる性質を有する合成樹脂製フィルム、たとえば、ポリエステル系、ポリアミド系、ポリプロピレン系等の樹脂からなる二軸方向に延伸した延伸フィルム、あるいは、セロハンや紙などを挙げることができる。   Next, the laminated body used for the gusset type packaging bag of this invention is demonstrated. As the base material layer of the laminate used in the gusset packaging bag of the present invention, a synthetic resin film having properties excellent in mechanical, physical, chemical, etc., for example, a polyester-based, polyamide-based, polypropylene-based resin, etc. Examples thereof include a stretched film stretched in the biaxial direction, cellophane and paper.

また、本発明のガセットタイプ包装袋に用いる積層体の内層としては、内層間の界面および／ないし内層の層間で凝集剥離する易剥離性を有する熱接着性樹脂からなる層であり、具体的に例示するならば、東セロ（株）製：ＴＡＦ−６５０Ｃ、あるいは、東レフィルム加工（株）製：７６０１Ａ、あるいは、ジェイフィルム（株）製：ＳＭＸ（Ｙ−０４）などを好適に用いることができる。   Further, the inner layer of the laminate used in the gusset type packaging bag of the present invention is a layer made of a heat-adhesive resin having an easily peelable property that causes cohesive peeling between the interface between the inner layers and / or between the inner layers. For example, Tose Cello Co., Ltd. product: TAF-650C, Toray Film Processing Co., Ltd. product: 7601A, or J Film Co., Ltd. product: SMX (Y-04) can be suitably used. .

また、本発明のガセット包装袋に用いる積層体としては、必要に応じて酸素ガスや水蒸気ガス等のガスバリアー性、および／ないし、遮光性を付与するためのバリアー層を中間層として上記した基材層と内層の間に設けてもよいものであり、たとえば、アルミニウム箔に代表される金属箔、あるいは、ポリビニルアルコール、エチレン−ビニルアルコール共重合体、ポリ塩化ビニリデン等のフィルム、あるいは、ポリエステル、ポリアミド、ポリエチレン，ポリプロピレン，エチレン−プロピレン共重合体等のポリオレフィンやポリビニルアルコール等のフィルムにポリ塩化ビニリデンを塗布したフィルムないしアルミニウム、酸化珪素、酸化アルミニウム、酸化インジウム、酸化錫、酸化ジルコニウム等の無機物の蒸着を施したフィルムを挙げることができ、また、前記中間層としては、包装袋に機械的強靭性、耐屈曲性、耐突き刺し性、耐衝撃性、耐寒性、耐熱性、耐薬品性等の機能を付与するために、たとえば、ポリエステル、ポリアミド、ポリエチレン，ポリプロピレン，エチレン−プロピレン共重合体等のポリオレフィン等の一種ないしそれ以上を組み合せた補強層であってもよいものである。前記補強層は未延伸の状態あるいは延伸された状態のいずれであってもよく、また、バリアー層と補強層は包装袋に要求される物性により組み合せて用いてもよいし、単独で用いてもよいものである。   In addition, the laminate used in the gusset packaging bag of the present invention includes the above-described base layer as an intermediate layer with a barrier layer for imparting gas barrier properties such as oxygen gas and water vapor gas and / or light shielding properties as necessary. It may be provided between the material layer and the inner layer, for example, a metal foil typified by aluminum foil, a film of polyvinyl alcohol, ethylene-vinyl alcohol copolymer, polyvinylidene chloride, or polyester, Polyamide, polyethylene, polypropylene, ethylene-propylene copolymer and other polyolefin films, polyvinyl alcohol, and other films coated with polyvinylidene chloride or inorganic materials such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, and zirconium oxide The evaporated film In addition, as the intermediate layer, in order to impart functions such as mechanical toughness, bending resistance, puncture resistance, impact resistance, cold resistance, heat resistance, chemical resistance to the packaging bag In addition, for example, the reinforcing layer may be a combination of one or more of polyolefins such as polyester, polyamide, polyethylene, polypropylene, and ethylene-propylene copolymer. The reinforcing layer may be in an unstretched state or a stretched state, and the barrier layer and the reinforcing layer may be used in combination depending on the physical properties required for the packaging bag, or may be used alone. It ’s good.

また、上記した各層を積層して積層体とする積層方法としては、Ｔダイ押出機を用いて積層するサンドイッチラミネ−ション法や接着剤を用いて積層するドライラミネーション法等の適宜の積層方法を選択して積層すればよいものである。   Moreover, as a lamination | stacking method which laminates | stacks each above-mentioned layer to make a laminated body, appropriate lamination | stacking methods, such as the sandwich lamination method laminated | stacked using a T-die extruder, the dry lamination method laminated | stacked using an adhesive agent, etc. are used. What is necessary is just to select and laminate | stack.

本発明にかかるガセットタイプ包装袋の第１実施形態を示す要部正面図である。It is a principal part front view which shows 1st Embodiment of the gusset type packaging bag concerning this invention. 図１の上開口部を図解的に示す概略平面図である。FIG. 2 is a schematic plan view schematically showing an upper opening of FIG. 1. 本発明にかかるガセットタイプ包装袋の第２実施形態を示す要部正面図である。It is a principal part front view which shows 2nd Embodiment of the gusset type packaging bag concerning this invention. 本発明にかかるガセットタイプ包装袋の第３実施形態を示す要部正面図である。It is a principal part front view which shows 3rd Embodiment of the gusset type packaging bag concerning this invention. 本発明にかかるガセットタイプ包装袋の第４実施形態を示す要部正面図である。It is a principal part front view which shows 4th Embodiment of the gusset type packaging bag concerning this invention.

符号の説明Explanation of symbols

１，１’，１”，１’’’ ガセットタイプ包装袋
２ 合掌シール部
３ 上端熱接着部
４ 表示部
３０，３０’，３０” 第１上端熱接着部
３１，３１’ 第２上端熱接着部
３２，３２’ 第３上端熱接着部
Ａ，Ｂ 折込部
Ｃ 未接着部

1, 1 ', 1 ", 1'" Gusset type packaging bag 2 Joint seal part 3 Upper end thermal bonding part 4 Display part 30, 30 ', 30 "First upper end thermal bonding part 31, 31' Second upper end thermal bonding Part 32, 32 'Third upper end heat bonding part A, B Folding part C Non-bonding part

Claims (4)

少なくとも基材層と易剥離性を有する熱接着性樹脂からなる内層とを備えた矩形状積層体の対向する端縁を前記内層同士が当接するように重ね合わせて熱接着して合掌シール部を有する筒状体となし、該筒状体の対向する両側部に横断面Ｖ字状の折込部を設け、上下開口部を上下端熱接着部で密封したガセットタイプ包装袋において、前記上端熱接着部が前記一方の折込部側に前記上開口部の端縁から前記下開口部側に未接着部を有するように前記一方の折込部側の側端縁から前記他方の折込部側に延びる第１上端熱接着部と、該第１上端熱接着部の終端に連接して前記他方の折込部側の側端縁に延びる第２上端熱接着部と該第２上端熱接着部に連接して前記上開口部の端縁に延びる第３上端熱接着部とからなり、前記第１上端熱接着部のみを剥離することを特徴とするガセットタイプ包装袋。 At least a base material layer and an inner layer made of a heat-adhesive resin having easy peelability are stacked so that the opposing edges of a rectangular laminate are in contact with each other so that the inner layers come into contact with each other, and a joint seal part is formed. In the gusset-type packaging bag in which a folded portion having a V-shaped cross section is provided on both opposing side portions of the cylindrical body, and the upper and lower openings are sealed by upper and lower thermal bonding portions, the upper end thermal bonding The first extending from the side edge of the one folding part to the other folding part side so that the part has an unbonded part from the edge of the upper opening to the one opening part. A first upper end thermal bonding portion, a second upper end thermal bonding portion extending to a side edge on the other folding portion side and connected to an end of the first upper end thermal bonding portion, and a second upper end thermal bonding portion; and a third upper heat seal portion extending edge of the upper opening, only the first upper heat-bonding portion Gusset type packing bag, characterized in that the peeling. 前記第１上端熱接着部が線状熱接着部であることを特徴とする請求項１記載のガセットタイプ包装袋。 The gusset-type packaging bag according to claim 1, wherein the first upper end heat bonding portion is a linear heat bonding portion. 前記第１上端接着部が前記上開口部側に凸部を有する略ヘの字状の熱接着部であることを特徴とする請求項１、２のいずれかに記載のガセットタイプ包装袋。 The gusset-type packaging bag according to any one of claims 1 and 2, wherein the first upper end bonding portion is a substantially U-shaped thermal bonding portion having a convex portion on the upper opening side. 前記未接着部が開封部であることを明示する表示部が外側から見える位置に施されていることを特徴とする請求項１記載のガセットタイプ包装袋。 The gusset-type packaging bag according to claim 1, wherein a display portion that clearly indicates that the unbonded portion is an unsealed portion is provided at a position visible from the outside.
JP2005100799A 2005-03-31 2005-03-31 Gusset type packaging bag Expired - Fee Related JP4797420B2 (en)

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