JP2011073714A - Self-standing packaging bag - Google Patents

Self-standing packaging bag Download PDF

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JP2011073714A
JP2011073714A JP2009226151A JP2009226151A JP2011073714A JP 2011073714 A JP2011073714 A JP 2011073714A JP 2009226151 A JP2009226151 A JP 2009226151A JP 2009226151 A JP2009226151 A JP 2009226151A JP 2011073714 A JP2011073714 A JP 2011073714A
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packaging bag
paper
self
outer bottom
bottom portion
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JP5407709B2 (en
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Yasushi Otsuka
康司 大塚
Keisuke Egami
恵介 江上
Takayoshi Tsuruta
崇義 鶴田
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag which has self-standing ability when containing liquid or power contents and does not lose the self-standing ability even if the contents reduce. <P>SOLUTION: The packaging bag 1 includes two laminates made mainly of paper and a bottom film forming a bottom portion. The lamination has a trunk and an outer bottom board. The inner surface of the trunk and a film sealing portion of the bottom are sealed together to form the bottom portion, and the outer bottom boards of the laminates are bent inward and are pasted together to form an outer bottom portion. Because the outer bottom portion is formed by pasting together the outer bottom boards, the bottom portion of the packaging bag does not deform as the contents reduce, which allows the packaging bag 1 to retain its self-standing ability. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、液体等の内容物を収容する紙を主体とする紙製パウチ包装袋に関し、保形性と自立性に優れる包装袋に関する。   The present invention relates to a paper pouch packaging bag mainly composed of paper containing contents such as liquid, and relates to a packaging bag excellent in shape retention and self-supporting properties.

従来から液体、粉体などを収容する容器として、軟包材を用いた底部をV型に折り込んで必要な周縁をヒートシールしてなる所謂スタンディングパウチが一般的に知られている。
すなわち、内容物を充填すると底部において表裏両側が円弧状に拡開し厚み方向に広がった形状となって自立性を発揮するものである。 2. Description of the Related Art Conventionally, a so-called standing pouch is generally known as a container for storing liquid, powder, and the like, in which a bottom portion using a soft wrapping material is folded into a V shape and a necessary peripheral edge is heat sealed.
That is, when the contents are filled, the both sides of the front and back are expanded in an arc shape at the bottom, and the shape expands in the thickness direction, thereby exhibiting self-supporting properties.

特開平６−１２２４５６号公報JP-A-6-122456 実開平６−８５２４３号公報Japanese Utility Model Publication No. 6-85243

しかしながら、特許文献１,２記載の包装袋は、内容物が十分に充填されている底部が拡開して自立性を有するが、内容物が減少すると包装袋自体が扁平になり、底部の拡開が小さくなり、自立性を保てなくなるという問題がある。
本発明は、液状物や粉状物などを収納した状態で自立性を有する包装袋で内容物が少なくなっても自立性が損なわれない包装袋を提供することを目的とする。 However, the packaging bags described in Patent Documents 1 and 2 are self-supporting because the bottom portion sufficiently filled with the contents expands, but when the contents decrease, the packaging bag itself becomes flat and the bottom portion expands. There is a problem that the opening becomes smaller and the independence cannot be maintained.
An object of the present invention is to provide a packaging bag having a self-supporting property in a state in which a liquid material, a powdery material, or the like is stored, and the self-supporting property is not impaired even if the content is reduced.

この発明は、紙を主材とする２枚の積層体と底部を形成する底フィルムからなる包装袋において、前記積層体は胴部と外底板を有し、前記胴部内面と前記底フィルムシール部をシールして底部を形成し、前記積層体の外底板をそれぞれ内側に折り曲げて貼り合わせて外側底部を形成することを特徴とするものである。   The present invention relates to a packaging bag comprising two laminated bodies mainly composed of paper and a bottom film forming a bottom portion, wherein the laminated body has a body portion and an outer bottom plate, and the body portion inner surface and the bottom film seal. The portion is sealed to form a bottom portion, and the outer bottom plate of the laminate is folded inward and bonded to form an outer bottom portion.

本発明の自立性包装袋は、胴部材と胴部材の底辺部分を延長して外底板を有する２枚の積層体の外底板を内側に折り曲げて外底板を貼り合わせて外側底部を形成しているので、内容物の減少により底部が変形することがない為、自立性を保つことができる。また、利便性を向上させる為、包装袋に注出口を設けても良い。   The self-supporting packaging bag of the present invention is formed by extending the bottom part of the body member and the body member, bending the outer bottom plate of the two laminates having the outer bottom plate inward, and bonding the outer bottom plate together to form the outer bottom part. Therefore, the bottom portion is not deformed due to a decrease in the contents, so that it is possible to maintain independence. Moreover, in order to improve convenience, you may provide a spout in a packaging bag.

本発明の包装袋は開口部または注出口から内容物を適宜注出することができ、外側底部が２枚の積層体を貼り合わせて形成されているので、内容物の減少によっても自立性が失われない。   The packaging bag of the present invention can appropriately pour the contents from the opening or the spout, and the outer bottom part is formed by laminating two laminated bodies, so that the self-supporting property can be reduced even if the contents are reduced. Not lost.

本発明に係る自立性包装袋の斜視図The perspective view of the self-supporting packaging bag which concerns on this invention 本発明の包装袋の主体に用いられる積層体の断面図Sectional drawing of the laminated body used for the main body of the packaging bag of this invention 図３（a）〜図３（e）は本発明の包装袋の説明図Fig.3 (a)-FIG.3 (e) are explanatory drawings of the packaging bag of this invention. 実施例１に係る包装袋の打抜き後の正面図Front view after punching a packaging bag according to Example 1 実施例２に係る包装袋の打抜き後の正面図Front view after punching a packaging bag according to Example 2 比較例で作成した従来の包装袋の斜視図Perspective view of a conventional packaging bag created in a comparative example

以下本発明による紙製パウチ包装袋の実施形態について説明する。本発明の紙製パウチ包装袋は、包装袋の主体が紙層の一方の面を保護層、他方の面をヒートシール可能な熱可塑性樹脂でラミネートされた積層体を主体とした素材と、内底部が熱可塑性樹脂フィルムから構成されている。図２に本発明の包装袋に使用する積層体の断面図を示す。
本発明の紙製パウチ包装袋の主体に用いる積層体の紙層３に用いられる材料としては、木材パルプ（又は木質パルプ）である１００％バ−ジンパルプを使用したカップ原紙、又はカップ原紙に故紙を含んだコ−トボ−ル紙、又はＮＢＫＰ材やＬＢＫＰ材を適宜な配合比率で含むＮＢＫＰ材使用紙やＬＢＫＰ材使用紙があり、あるいは、木材パルプ以外のケナフ、バンブーなど天然植物繊維からなる紙なども使用でき、またこれら木材パルプやそれ以外の天然植物繊維からなる紙の片面にクレイコート処理が施された紙等、様々な種類の原料からなる紙質材料（又は紙状の繊維構造物）を用いることが可能である。 Hereinafter, an embodiment of a paper pouch packaging bag according to the present invention will be described. The paper pouch packaging bag of the present invention comprises a material mainly comprising a laminate in which the main body of the packaging bag is laminated with a protective layer on one side of the paper layer and a thermoplastic resin heat-sealable on the other side; The bottom part is comprised from the thermoplastic resin film. FIG. 2 shows a cross-sectional view of the laminate used in the packaging bag of the present invention.
The material used for the paper layer 3 of the laminate used as the main body of the paper pouch packaging bag of the present invention is cup base paper using 100% virgin pulp which is wood pulp (or wood pulp), or waste paper for cup base paper Coated paper, or NBKP paper or LBKP paper containing NBKP material or LBKP material at an appropriate blending ratio, or made of natural plant fibers such as kenaf and bamboo other than wood pulp Paper materials can also be used, and paper-based materials (or paper-like fiber structures) made of various types of raw materials such as paper with a clay coating on one side of paper made of wood pulp or other natural plant fibers. ) Can be used.

このように、本発明の紙製パウチ包装体の主体に用いる積層体の紙層３に用いられる材料は、木材パルプやそれ以外の天然植物繊維からなる紙状の繊維構造物を全て包含し、いわゆる紙質材料の種類に限定されるものではない。   Thus, the material used for the paper layer 3 of the laminate used mainly for the paper pouch package of the present invention includes all paper-like fiber structures made of wood pulp and other natural plant fibers, It is not limited to what is called a paper material.

そして、紙層３の厚みは目的に応じて適宜選択すれば良く、紙層３に使用する紙質材料の特性にもよるが、本発明の紙パウチ容器に求められる柔軟性もしくは剛直性、あるいは遮光性などの必要性に応じて適宜に選択すればよい。   The thickness of the paper layer 3 may be appropriately selected according to the purpose, and depends on the characteristics of the paper material used for the paper layer 3, but the flexibility or rigidity required for the paper pouch container of the present invention, or light shielding. What is necessary is just to select suitably according to necessity, such as sex.

本発明の紙製パウチ包装体の主体に用いる積層体の保護層２としては、シール時の熱から紙層の焦げ等を防止する為、ポリエチレンテレフタレート等の耐熱性を有する樹脂を用いることが可能である。   As the protective layer 2 of the laminate used for the main body of the paper pouch packaging of the present invention, it is possible to use a heat-resistant resin such as polyethylene terephthalate in order to prevent scorching of the paper layer from heat at the time of sealing. It is.

本発明の紙製パウチ包装体の主体に用いる積層体のヒートシール可能な熱可塑性樹脂層４としては、他方の面が、例えばポリエステル、ナイロン、ポリプロピレン、ポリエチレンなどの熱可塑性樹脂から選ばれる一種以上の樹脂をもちることが可能である。底フィルムは、少なくとも片方の面がヒートシール可能な熱可塑性樹脂からなるフィルムを使用する。この積層体を包装袋の主体を構成する積層体を用い、前記積層体のヒートシール可能な熱可塑性樹脂層４が包装袋胴部の内面にくるように配置して、袋状に成形したものが本発明の包装袋である。   As the heat-sealable thermoplastic resin layer 4 of the laminate used as the main body of the paper pouch package of the present invention, the other surface is one or more selected from thermoplastic resins such as polyester, nylon, polypropylene, polyethylene and the like. It is possible to use this resin. As the bottom film, a film made of a thermoplastic resin that can be heat-sealed on at least one side is used. This laminate is formed into a bag shape by using a laminate constituting the main body of the packaging bag and arranging the laminate so that the heat-sealable thermoplastic resin layer 4 is on the inner surface of the packaging bag body. Is the packaging bag of the present invention.

図１の包装袋１は、本発明の一の実施態様を示し、胴部を構成する積層体のヒートシール可能な熱可塑性樹脂面を２枚対向するように重ね合わせ、底部をＶ字型に折り込んで周縁をヒートシールしてなるスタンディングパウチ状の包装袋である。この包装袋は左右のサイドシール部と上部シール部を備えている。本包装袋は、胴部下辺に連接した底板の表面に接着剤を塗布して内側に折り曲げ、その後、他方底板を内側に折り曲げて底板同士を貼りあわせる。この底板が包装袋の底部を形成するので包装袋の内容物の残容量に左右されることのない自立性を有する。   The packaging bag 1 of FIG. 1 shows one embodiment of the present invention, in which two heat-sealable thermoplastic resin surfaces of the laminate constituting the body portion are overlapped so as to face each other, and the bottom portion is V-shaped. It is a standing pouch-shaped packaging bag that is folded and heat-sealed at the periphery. The packaging bag includes left and right side seal portions and an upper seal portion. In this packaging bag, an adhesive is applied to the surface of the bottom plate connected to the lower side of the body part, and the inner side is folded inward, and then the other bottom plate is folded inward to bond the bottom plates together. Since this bottom plate forms the bottom of the packaging bag, it has a self-supporting property that does not depend on the remaining capacity of the contents of the packaging bag.

（実施例１）
次に本発明の具体的実施例について、説明する。
保護層（ＰＥＴ（厚さ１２μｍ））、紙層（坪量１５０g/cm2）、中間層（延伸ナイロン（厚さ１５μｍ））、ヒートシール層(LLDPE（厚さ１５０μｍ））を積層してなるロール状の積層体を中央部でスリットして２枚の相対するシート（胴部と外底部）をヒートシール面が対向するように配置する。この積層体のヒートシール面の間に底フィルムのヒートシール面が外側になるように挿入する。その後、底シールとサイドシールを行った後に、トムソン刃により前記シートを図4に示すパウチ形状に打ち抜く。また、底フィルムはＰＥＴ（厚さ１２μｍ）/延伸ナイロン（厚さ１５μｍ）/LLDPE（厚さ１５０μｍ）で構成されている。
次に前記シート１枚の外側底部の表面にホットメルトを塗布する。前記外側底部を内側に折り曲げ、他方のシートの外側底部を折り曲げて、貼り合わせる。その後、内容物を充填した後に上部をヒートシールして包装袋を作成した。 Example 1
Next, specific examples of the present invention will be described.
A protective layer (PET (thickness 12 μm)), a paper layer (basis weight 150 g / cm 2 ), an intermediate layer (stretched nylon (thickness 15 μm)), and a heat seal layer (LLDPE (thickness 150 μm)) are laminated. A roll-shaped laminate is slit at the center, and two opposing sheets (body and outer bottom) are arranged so that the heat seal surfaces face each other. It inserts so that the heat seal surface of a bottom film may become an outer side between the heat seal surfaces of this laminated body. Thereafter, after performing bottom sealing and side sealing, the sheet is punched into a pouch shape shown in FIG. 4 with a Thomson blade. The bottom film is made of PET (thickness 12 μm) / stretched nylon (thickness 15 μm) / LLDPE (thickness 150 μm).
Next, hot melt is applied to the surface of the outer bottom portion of one sheet. The outer bottom portion is folded inward, and the outer bottom portion of the other sheet is folded and bonded. Then, after filling the contents, the upper part was heat-sealed to prepare a packaging bag.

（実施例２）
保護層（ＰＥＴ（厚さ１２μｍ））、紙層（坪量１５０g/cm2）、中間層（延伸ナイロン（厚さ15μｍ））、ヒートシール層（LLDPE（厚さ１５０μｍ））を積層してなるロール状の積層体を中央部でスリットして２枚の相対するシート（胴部と外側底部）をヒートシール面が対向するように配置する。この積層体のヒートシール面の間に底フィルムのヒートシール面が外側になるように挿入する。その後、底シールとサイドシールを行った後に、トムソン刃により前記シートを図５に示すパウチ形状に打ち抜く。また、底フィルムはＰＥＴ（厚さ１２μｍ）/延伸ナイロン（厚さ１５μｍ）/LLDPE（厚さ１５０μｍ）で構成されている。
次に前記シート１枚の外側底部の表面にホットメルトを塗布する。前記外側底部を内側に折り曲げ、他方のシートの外側底部を折り曲げて、貼り合わせる。その後、パウチ上部に注出口を挿入して、上部をヒートシールして包装袋を作成した。 (Example 2)
A protective layer (PET (thickness 12 μm)), a paper layer (basis weight 150 g / cm 2 ), an intermediate layer (stretched nylon (thickness 15 μm)), and a heat seal layer (LLDPE (thickness 150 μm)) are laminated. A roll-shaped laminate is slit at the center, and two opposing sheets (body and outer bottom) are placed so that the heat seal surfaces face each other. It inserts so that the heat seal surface of a bottom film may become an outer side between the heat seal surfaces of this laminated body. Then, after performing bottom sealing and side sealing, the sheet is punched into a pouch shape shown in FIG. The bottom film is made of PET (thickness 12 μm) / stretched nylon (thickness 15 μm) / LLDPE (thickness 150 μm).
Next, hot melt is applied to the surface of the outer bottom portion of one sheet. The outer bottom portion is folded inward, and the outer bottom portion of the other sheet is folded and bonded. Thereafter, a spout was inserted into the upper part of the pouch, and the upper part was heat-sealed to prepare a packaging bag.

（比較例）
さらに、比較例として、透明蒸着ＰＥＴ（厚さ１２μｍ）、延伸ナイロン、ＬＬＤＰＥ（厚さ１３０μｍ）を積層してなる相対する２枚プラスチックフィルムをヒートシール面が対向するように配置する。この積層体のヒートシール面の間に透明蒸着延伸ナイロン（厚さ２５μｍ）、ＬＬＤＰＥ（厚さ１３０μｍ）を積層してなる底フィルムのヒートシール面が外側になるように挿入する。その後、底シールとサイドシールを行なった後、内容物を充填した図６に示す包装袋５を作成した。 (Comparative example)
Furthermore, as a comparative example, two opposing plastic films formed by laminating transparent vapor-deposited PET (thickness 12 μm), stretched nylon, and LLDPE (thickness 130 μm) are arranged so that the heat seal surfaces face each other. It inserts so that the heat-seal surface of the bottom film formed by laminating | transparent transparent vapor-deposited stretched nylon (thickness 25 micrometers) and LLDPE (thickness 130 micrometers) may become an outer side between the heat-seal surfaces of this laminated body. Then, after performing a bottom seal and a side seal, the packaging bag 5 shown in FIG. 6 filled with the contents was created.

（評価方法）
実施例１で作成した包装袋と従来のフィルム性包装袋に水を充填して自立性試験を行った。包装袋の内容量を表１に示すように減少させた場合の自立性評価を行った。自立性を有しているものを○、自立性がないものを×とした。

(Evaluation methods)
The packaging bag prepared in Example 1 and a conventional film packaging bag were filled with water, and the self-supporting test was performed. As shown in Table 1, self-supporting evaluation was performed when the content of the packaging bag was reduced. A sample having independence was marked with ◯, and a sample having no independence was marked with ×.

Figure 2011073714
Figure 2011073714

以上の結果より、本発明の包装袋は、内容物の内容量を減少させても自立性を保つことができた。   From the above results, the packaging bag of the present invention was able to maintain its independence even when the content of the contents was reduced.

１…包装袋
２…保護層
３…紙層
４…ヒートシール可能な熱可塑性樹脂層
５…従来の包装袋
１１…積層体（胴部、外側底部）
１２…積層体（胴部）
１３…積層体（外側底部）
１４…サイドシール部
１５…底部シール部
１６…上部シール部
１７…底フィルム
１８…注出口
２０…積層体 DESCRIPTION OF SYMBOLS 1 ... Packaging bag 2 ... Protective layer 3 ... Paper layer 4 ... Thermoplastic resin layer which can be heat-sealed 5 ... Conventional packaging bag 11 ... Laminate body (body part, outer bottom part)
12 ... Laminated body (torso)
13 ... Laminated body (outer bottom)
14 ... side seal part 15 ... bottom seal part 16 ... top seal part 17 ... bottom film 18 ... spout 20 ... laminate

Claims (1)

紙を主材とする２枚の積層体と底部を形成する底フィルムからなる包装袋において、前記積層体は胴部と外底板を有し、前記胴部材内面と前記底フィルムシール部をシールして底部を形成し、前記積層体の外底板をそれぞれ内側に折り曲げて張り合わせて外側底部を形成することを特徴とする自立性包装袋














In a packaging bag comprising two laminated bodies mainly composed of paper and a bottom film forming a bottom portion, the laminated body has a body portion and an outer bottom plate, and seals the inner surface of the body member and the bottom film seal portion. A self-supporting packaging bag characterized in that the outer bottom plate is formed by bending each of the outer bottom plates of the laminated body inwardly to form an outer bottom portion.














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