JP2001031111A - Packaging bag and its manufacture - Google Patents
Packaging bag and its manufactureInfo
- Publication number
- JP2001031111A JP2001031111A JP11201625A JP20162599A JP2001031111A JP 2001031111 A JP2001031111 A JP 2001031111A JP 11201625 A JP11201625 A JP 11201625A JP 20162599 A JP20162599 A JP 20162599A JP 2001031111 A JP2001031111 A JP 2001031111A
- Authority
- JP
- Japan
- Prior art keywords
- packaging bag
- easy
- opening
- tear strength
- laminated film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bag Frames (AREA)
- Making Paper Articles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、袋の実用上の強度
を損なうことなく手指の力で開封できる易開封部を有す
る包装袋およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag having an easy-opening portion which can be opened with the force of a finger without impairing the practical strength of the bag, and a method for producing the same.
【０００２】[0002]
【従来の技術】食品、薬品、小物類などの商品を小分け
して収容する積層フィルム製の包装袋がある。この包装
袋の開封に当たり、刃物を準備することは手間であるた
めに手指のみで容易に開封できることが望ましい。その
ために袋の端縁にノッチを設けたもの、もしくは、粗面
（傷痕）加工を施したものがある。後者に関してはさら
に、積層フィルムを二つ折りして形成される袋の折り返
し部分に粗面加工を施したものと、袋のヒートシール部
分に、ローラ面に研磨材を設けたローラを連続的に接触
されることにより、そのヒートシール部分の全長に亘っ
て直線的で連続した粗面領域を形成したもの（特公昭６
１−３９２２８号公報参照）とが知られている。2. Description of the Related Art There is a packaging bag made of a laminated film for accommodating products such as foods, medicines and accessories in small portions. In opening the packaging bag, it is troublesome to prepare a knife, so it is desirable that the packaging bag can be easily opened only with fingers. For this purpose, there is a bag provided with a notch at the edge of the bag, or a bag provided with a roughened surface (scratch). Regarding the latter, the rolled part of the bag formed by folding the laminated film in two is roughened, and the heat-sealed part of the bag is in continuous contact with a roller provided with an abrasive on the roller surface. In this way, a linear and continuous rough surface area is formed over the entire length of the heat seal portion (Japanese Patent Publication No.
1-339228).
【０００３】[0003]
【発明が解決しようとする課題】密封小袋に収める内容
物としては、薬品や薄いシート状食品などがあり、これ
らの場合には、開封場所によっては内容物がこぼれたり
破損する虞がある。このため、開封可能な場所を限定し
たいという要求が生じる。また、この種の密封小袋とし
ては四角形のものが主であるが、内容物や利用者のニー
ズに応じてその形状が変えられることが望ましい。The contents to be stored in the sealed pouch include chemicals and thin sheet foods. In these cases, there is a possibility that the contents may be spilled or damaged depending on the opening place. For this reason, there is a demand to limit the location where the opening is possible. Further, this type of sealed pouch is mainly a rectangular bag, but it is desirable that the shape can be changed according to the contents and needs of the user.
【０００４】しかし、上記の特公昭６１−３９２２８号
公報に開示されている粗面加工方法を利用した場合は、
袋端縁の直線的なシール部に沿って連続した粗面領域を
連続形成することしかできないので、開封場所を限定で
きない。また、袋端縁が複雑なあるいは曲線状の形状を
有する場合には、端縁のシール部を粗面加工することが
できない。前者の場合も、フィルムを折り返して製造で
きる形状に限られてしまう。However, when the rough surface processing method disclosed in Japanese Patent Publication No. 61-39228 is used,
Since only a continuous rough surface region can be continuously formed along the linear sealing portion at the edge of the bag, the opening place cannot be limited. In addition, when the bag edge has a complicated or curved shape, the seal portion at the edge cannot be roughened. The former case is also limited to a shape that can be manufactured by folding the film.
【０００５】袋体にノッチを設ける場合には、当該袋体
の開封場所はノッチを形成した場所に限定される。ノッ
チ加工を施す包装袋は、包装袋を包装材料加工メーカー
が製造してユーザーに納入する場合には、包装材料加工
メーカーにおいて、包装袋を形成する段階で包装袋のヒ
ートシール部にノッチ加工を行うことができるが、包装
材料加工メーカーが、ロール状の包装材料素材をユーザ
ーに納入し、ユーザーの内容物充填機で内容物を充填し
ながら包装袋の形成を行う場合には、包装袋のヒートシ
ール部にノッチ加工を施すことが難しい。また、Ｉノッ
チを設ける場合は、袋の端縁部のどこに切り口が設けら
れているのか発見しにくく、Ｖノッチを設ける場合は、
大量に製袋するにあたり、Ｖ字形の切断片が散乱して包
装製品に付着したり、作業環境を悪化させる問題があ
る。When a notch is provided in a bag, the opening of the bag is limited to the place where the notch is formed. When the packaging bag to be notched is manufactured by the packaging material processing manufacturer and delivered to the user, the packaging material processing manufacturer applies the notch processing to the heat seal part of the packaging bag at the stage of forming the packaging bag. However, if the packaging material processing maker supplies the roll-shaped packaging material to the user and forms the packaging bag while filling the content with the user's content filling machine, It is difficult to notch the heat seal part. Also, when providing an I notch, it is difficult to find where the cut is provided at the edge of the bag, and when providing a V notch,
When making a large number of bags, there is a problem that V-shaped cut pieces are scattered and adhere to packaging products, or the working environment is deteriorated.
【０００６】そこで、本発明の目的は、易開封部による
開封場所の限定が可能で、かつ、複雑な形状を有する包
装袋、および、その製造方法を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a packaging bag having a complicated shape, in which the opening location can be limited by an easy-opening portion, and a method for manufacturing the same.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、１枚
又は２枚以上の積層フィルムを折り曲げ及び／又は重ね
合わせ、端縁部を密封してなる包装袋であって、当該包
装袋の開封を開始させるべき開封位置が、積層フィルム
同士を貼り合わせて包装袋の端縁部に形成したシール部
の外側端縁上の一部領域に限定されており、前記開封位
置のシール部の外側端縁からシール部の幅方向の少なく
とも途中までにかけて、積層フィルム中の少なくとも最
も引き裂き強度が高いフィルム層の引き裂き強度を低下
させた易開封部が設けられていることを特徴とする。こ
の発明によれば易開封部による開封位置を限定すること
ができ、不必要に引き裂き強度の弱い部分を多く設けた
り、袋の開封が製袋者の意図しない位置で行われて内容
物がこぼれたり破損する虞がない。また、従来のよう
に、製袋時に積層フィルムが折り曲げられる部分に易開
封部を設けたのでは、包装袋の形状が積層フィルムを折
り曲げることにより得られる形状に限定されてしまう。
しかし、本発明のように、シール部に易開封部を設けれ
ば、包装袋の形状を自由に選ぶことができる。The invention of claim 1 is a packaging bag formed by folding and / or overlapping one or more laminated films and sealing the edges thereof. The opening position at which the opening of the opening is to be started is limited to a partial area on the outer edge of the seal portion formed on the edge portion of the packaging bag by laminating the laminated films, and An easy-opening portion is provided in which the tear strength of at least the film layer having the highest tear strength in the laminated film is reduced from the outer edge to at least halfway in the width direction of the seal portion. ADVANTAGE OF THE INVENTION According to this invention, the opening position by an easy-opening part can be limited, and many parts with a tear strength are needlessly provided, or the bag is opened at a position unintended by the bag maker, and the contents are spilled. There is no risk of breakage. In addition, if an easy-opening portion is provided at a portion where the laminated film is bent at the time of bag making as in the related art, the shape of the packaging bag is limited to a shape obtained by bending the laminated film.
However, if the easy-opening portion is provided in the seal portion as in the present invention, the shape of the packaging bag can be freely selected.
【０００８】請求項２の発明は、請求項１記載の易開封
部が、シール部の外側端縁からシール部の幅方向に進む
に従い先細りとなる形状を有していることを特徴とす
る。この場合には、開封者が開封しやすいようにシール
部の外側端縁の開封位置にある程度の幅を持たせても、
シール部を越えるまでに切り口を易開封部の先細りとな
った場所に誘導できるので、さらに正確に開封位置を限
定することができる。According to a second aspect of the present invention, the easy-opening portion of the first aspect has a shape that tapers from the outer edge of the seal portion in the width direction of the seal portion. In this case, even if the opening position of the outer edge of the seal portion has a certain width so that the unsealing person can easily open,
Since the cut end can be guided to the tapered portion of the easy-opening portion before passing over the seal portion, the opening position can be more accurately limited.
【０００９】請求項３の発明は、請求項１記載の前記積
層フィルムは、少なくとも基材フィルム層と最内層であ
るシーラント層を有していることを特徴とする。この場
合には、本発明を最も簡便な形態で実施することができ
る。A third aspect of the present invention is characterized in that the laminated film according to the first aspect has at least a base film layer and a sealant layer as an innermost layer. In this case, the present invention can be implemented in the simplest form.
【００１０】請求項４の発明は、請求項１記載の前記積
層フィルムの少なくとも最も引き裂き強度が高い層の前
記易開封部の領域に貫通孔を有する粗面加工が施され、
さらに、当該積層フィルムは最内層であるシーラント層
を有していることを特徴とする。この場合には、易開封
部の領域に有する貫通孔の上にシーラント層が重なり、
易開封部の領域に有する貫通孔を塞ぐので気密性を保つ
ことができる。また、易開封部がシール部の位置からは
み出した場合でも気密性を保つことができる。According to a fourth aspect of the present invention, at least a layer having the highest tear strength of the laminated film according to the first aspect is roughened with a through hole in a region of the easy-opening portion,
Further, the laminated film has a sealant layer as an innermost layer. In this case, the sealant layer overlaps the through hole in the area of the easy-open portion,
Since the through hole in the area of the easy-opening portion is closed, airtightness can be maintained. Further, even when the easy-opening portion protrudes from the position of the seal portion, airtightness can be maintained.
【００１１】請求項５の発明は、請求項１記載の前記積
層フィルム中の最も引き裂き強度が高い層を含む２層以
上に引き裂き強度を低下させた部分が形成されており、
そのうちの一層には引き裂き強度を低下させた部分が前
記易開封部の領域通りに形成されており、その他の層に
は引き裂き強度を低下させた部分が前記易開封部の領域
を含むより広い領域に形成されていることを特徴とす
る。このようにすれば、引き裂き強度を低下させた部分
が複数層にわたる場合に、引き裂き強度を低下させる位
置の位置決め精度を抑えても期待する位置に正確に易開
封部の領域を確保することができる。According to a fifth aspect of the present invention, a portion having a reduced tear strength is formed in at least two layers including the layer having the highest tear strength in the laminated film according to the first aspect,
In one of the layers, a portion with reduced tear strength is formed in the area of the easy-open portion, and in other layers, a portion with reduced tear strength has a wider area including the area of the easy-open portion. It is characterized by being formed in. In this way, when the portion where the tear strength is reduced extends over a plurality of layers, even if the positioning accuracy of the position where the tear strength is reduced is suppressed, the area of the easy-opening portion can be accurately secured at the expected position. .
【００１２】請求項６の発明は、請求項１記載の前記開
封位置が、前記シール部の外側端縁上であって、前記包
装袋のシール部以外の部分を通過する開封位置の延長線
を引くことができる領域か、又は、曲線状に形成されて
いる領域に限定されていることを特徴とする。従来のよ
うに、直線的に連続した易開封部を設けて開封位置を形
成する方法では、包装袋を横断又は縦断のように単純に
通過しない複雑な形状を有するシール部に易開封部を設
けようとすると、シール部以外の部分にも引き裂き強度
を低下させた部分が形成されることとなる。この場合、
開封位置が限定できないばかりでなく、包装袋のシール
部以外の部分の強度を低下させることとなる。しかし、
この発明によれば、複雑な形状や曲線形状を有するシー
ル部に、開封位置を限定することが可能な易開封部を設
けることができる。According to a sixth aspect of the present invention, the unsealing position according to the first aspect is an extension line of the unsealing position passing through a portion other than the sealing portion of the packaging bag on the outer edge of the sealing portion. It is characterized in that it is limited to a region that can be pulled or a region that is formed in a curved shape. In the conventional method of forming an opening position by providing an easy-opening portion that is linearly continuous, the easy-opening portion is provided in a seal portion having a complicated shape that does not simply pass through the packaging bag such as crossing or longitudinally. In this case, a portion having reduced tear strength is formed in a portion other than the seal portion. in this case,
Not only the opening position cannot be limited, but also the strength of the portion other than the seal portion of the packaging bag is reduced. But,
According to the present invention, the easy-opening portion capable of limiting the opening position can be provided in the seal portion having a complicated shape or a curved shape.
【００１３】請求項７の発明は、開封を開始させるべき
開封位置が、積層フィルム同士を貼り合わせて包装袋の
端縁部に形成したシール部の外側端縁上の一部領域に限
定されており、前記開封位置のシール部の外側端縁から
シール部の幅方向の少なくとも途中までにかけて、積層
フィルム中の少なくとも最も引き裂き強度の高いフィル
ム層に引き裂き強度を低下させた易開封部が設けられて
いる包装袋の製造方法であって、最も引き裂き強度の高
いフィルム層の易開封部となる領域に、当該易開封部の
形状及び寸法に合わせてローラの外周面の一部に設けら
れた加工部材を押し当てて当該領域の引き裂き強度を部
分的に低下させ、当該引き裂き強度を部分的に低下させ
たフィルムと別の層とを積層して積層フィルムを作成
し、このようにして作成した１枚又は２枚以上の積層フ
ィルムを、折り曲げ及び／又は重ね合わせ、易開封部と
なる領域の位置を合わせ、端縁部のうち少なくとも開放
端において当接し合う積層フィルムの端縁同士を貼り合
わせて密封することを特徴とする。この発明によれば、
請求項１〜４に記載の包装袋を容易に実現することがで
きる。According to the present invention, the opening position at which the opening is to be started is limited to a partial area on the outer edge of the sealing portion formed at the edge of the packaging bag by laminating the laminated films. An easy-opening portion having a reduced tear strength is provided in at least the highest tear strength film layer in the laminated film from the outer edge of the seal portion at the opening position to at least halfway in the width direction of the seal portion. A process member provided on a part of an outer peripheral surface of a roller in a region to be an easy-opening portion of a film layer having the highest tear strength according to the shape and size of the easy-opening portion. To partially reduce the tear strength of the region, and laminate the film with the partially reduced tear strength and another layer to form a laminated film, and thus, The formed one or two or more laminated films are folded and / or overlapped, the position of the region to be the easy-open portion is adjusted, and the edges of the laminated film that abut at least at the open end among the edge portions are separated. It is characterized by being bonded and sealed. According to the invention,
The packaging bag according to claims 1 to 4 can be easily realized.
【００１４】請求項８の発明は、開封を開始させるべき
開封位置が、積層フィルム同士を貼り合わせて包装袋の
端縁部に形成したシール部の外側端縁上の一部領域に限
定されており、前記開封位置のシール部の外側端縁から
シール部の幅方向の少なくとも途中までにかけて、積層
フィルム中の少なくとも最も引き裂き強度の高いフィル
ム層に引き裂き強度を低下させた易開封部が設けられて
いる包装袋の製造方法であって、２以上のフィルムを準
備し、そのうち一のフィルムに、前記易開封部の形状及
び寸法に合わせてローラの外周面の一部に設けられた加
工部材を押し当てて当該易開封部となる領域通りに引き
裂き強度を低下させた部分を形成し、その他のフィルム
に、引き裂き強度を低下させた部分を前記易開封部の領
域を含むより広い領域に形成し、上記各フィルム及び必
要に応じて他の層を、易開封部となる領域の位置を合わ
せ、任意の順序に積層して積層フィルムを作成し、この
ようにして作成した１枚又は２枚以上の積層フィルム
を、折り曲げ及び／又は重ね合わせ、易開封部となる領
域の位置を合わせ、端縁部のうち少なくとも開放端にお
いて当接し合う積層フィルムの端縁同士を貼り合わせて
密封することを特徴とする。この発明によれば、請求項
５に記載の包装袋を用意に実現することができる。According to the invention of claim 8, the opening position at which the opening is to be started is limited to a partial area on the outer edge of the seal portion formed at the edge of the packaging bag by laminating the laminated films. An easy-opening portion having a reduced tear strength is provided in at least the highest tear strength film layer in the laminated film from the outer edge of the seal portion at the opening position to at least halfway in the width direction of the seal portion. A method of manufacturing a packaging bag, comprising preparing two or more films, and pressing one of the films on a processing member provided on a part of the outer peripheral surface of the roller in accordance with the shape and dimensions of the easy-opening portion. A portion where the tear strength is reduced is formed in accordance with the area to be applied to the easy-opening portion, and the other film is wider than the area including the easy-opening portion where the tear strength is reduced. The above film and other layers as needed, the position of the area to be the easy-opening part is adjusted, and a laminated film is formed by laminating in any order. Alternatively, two or more laminated films are folded and / or laminated, the position of the area to be the easy-opening part is adjusted, and the edges of the laminated film that are in contact at least at the open ends of the edge parts are bonded together and sealed. It is characterized by doing. According to this invention, the packaging bag according to claim 5 can be easily realized.
【００１５】請求項９の発明は、請求項７または８記載
の易開封部となる領域が、積層フィルムの外縁であって
当該積層フィルム上の外縁以外の部分を通過する開封位
置の延長線を引くことのできる部分か又は曲線状に形成
された部分から内側の少なくとも途中までにかけて配置
されるように、前記積層フィルムを最終形態である包装
袋の形状に合わせて裁断し、裁断した積層フィルムを折
り曲げ及び／又は他のフィルムと重ね合わせて、端縁部
を密封することを特徴とする。この発明によれば、請求
項６に記載の包装袋を容易に実現することができる。According to a ninth aspect of the present invention, the easy-opening area according to the seventh or eighth aspect is an extension of the opening position passing through a portion other than the outer edge of the laminated film on the outer edge of the laminated film. The laminated film is cut in accordance with the shape of the final form of the packaging bag, so that the part can be arranged from the part that can be pulled or the part formed in a curved shape to at least halfway inside, and cut the laminated film. It is characterized by being folded and / or overlapped with another film to seal the edge. According to this invention, the packaging bag according to claim 6 can be easily realized.
【００１６】[0016]
【発明の実施の形態】図１は、本発明が適用された包装
袋の一例を示す図である。この包装袋は、後述する積層
フィルム２を２枚重ねて、その外周部分を接合すること
により形成されている。積層フィルム２の接合箇所（シ
ール部分）２ｃ上に、積層フィルム２の所定の層の引き
裂き強度を低下させた粗面加工領域２ｂが設けられてい
る。この包装袋は、粗面加工領域２ｂが設けられた部分
（以下、「易開封部」とも呼ぶ。）のみから手指の力に
よって開封することが可能である。FIG. 1 is a diagram showing an example of a packaging bag to which the present invention is applied. This packaging bag is formed by stacking two laminated films 2 described later and joining the outer peripheral portions thereof. A roughened surface region 2b in which the tear strength of a predetermined layer of the laminated film 2 is reduced is provided on a joint (sealed portion) 2c of the laminated film 2. This packaging bag can be opened only with the rough surface processing region 2b (hereinafter, also referred to as an “easy opening portion”) by the force of a finger.
【００１７】図２は、積層フィルム２の断層図である。
図２の（ａ）に示すように、積層フィルム２は主に、基
材層４２、バリア層４３、シーラント層４４を有してい
る。基材層４２は、積層フィルム２の基となる層であ
り、基材層４２に対して他の層が形成される。バリア層
４３は、酸素や水蒸気などを透過させないためのガスバ
リア層であり、遮断する物資の種類や数に応じて複数の
層が設けられる場合もある。シーラント層４４は、それ
自身が溶融接着して積層フィルム２同士を接合して製袋
するための層である。つまり、包装袋は２枚の積層フィ
ルム２のシーラント層４４同士が内側に向けられた状態
で接合される。接合の方法としては、熱溶着によるヒー
トシールが採用できる。ヒートシールの方法としては、
通常のバーシール法の他に、超音波シール法や、高周波
シール法がある。熱溶着の温度は、フィルムの種類、フ
ィルムの厚さ、押付け圧、押付け時間などの条件により
異なるが、１００〜２２０℃の範囲であり、一般に１５
０〜１８０℃の程度で行われる。このシーラント層４４
の原料としては、低密度ポリエチレンなどのオレフィン
系樹脂、ポリエチレン−酢酸ビニル共重合体などが利用
できる。基材層４２を形成する基材フィルム１は流通、
保存に耐える強度を備えたものであればよく、ナイロ
ン、ポリエステル、ポリプロピレン、または、これらの
延伸フィルムが使用できる。これらの原料による基材フ
ィルム１は強靭であるため引き裂き強度が高く、手指の
力で切り口を作り引き裂き始めることができない。そこ
で、この基材フィルム１に強度の低い箇所を部分的に設
ける（図２（ａ）の符号１ｂ参照）ことにより、手指の
力のみで包装袋開封の切り口を作成できる易開封部２ｂ
を作成する。また、積層フィルム２の構成層に基材フィ
ルム１以外にも引き裂き強度が高い層がある場合には、
その層に対しても引き裂き強度の低い箇所を設ける加工
を施すが、詳しくは後述する。一般的に、積層フィルム
の中で基材フィルム１が最も引き裂き強度が高いが、基
材フィルム１が紙などの引き裂き強度の低い材料で形成
されている場合は、基材フィルム１に引き裂き強度を低
下させた部分を設けず、最も引き裂き強度が高い層に優
先的に引き裂き強度の低い部分を設け、必要に応じて他
の引き裂き強度が高い層にも引き裂き強度の低い部分を
設ける。積層フィルム２の具体的な構成としては、*Ｐ
ＥＴ12／ＰＥ15／ＡＬ7／ＰＥ40、紙／ＰＥ／*ＰＥＴ／
ＰＥ／ＡＬ／ＰＥ、*ＰＥＴ／*ＯＮ／ＡＬ／ＰＥ、*Ｐ
ＥＴ／ＡＬ／*ＯＰＰ／ＰＥ、*ＰＥＴ／ＰＥ／ＡＬ／Ｐ
Ｅ／*ＰＥフィルム、ＯＮ／ＡＬ／*ＰＥＴ／ＰＥなどが
考えられる。なお、上記の表示において、ＰＥＴはポリ
エチレンテレフタレート、ＰＥはポリエチレン、ＡＬは
アルミ箔、ＯＮは延伸ナイロン、ＯＰＰは延伸ポリプロ
ピレンをそれぞれ示し、粗面加工を施す層については頭
に＊を付して示している。また、“／”は層間の区切り
を、下付数字はミクロン単位の層の厚さを、それぞれ示
す。FIG. 2 is a sectional view of the laminated film 2.
As shown in FIG. 2A, the laminated film 2 mainly has a base material layer 42, a barrier layer 43, and a sealant layer 44. The base layer 42 is a layer serving as a base of the laminated film 2, and another layer is formed on the base layer 42. The barrier layer 43 is a gas barrier layer for preventing oxygen, water vapor, and the like from passing therethrough, and a plurality of layers may be provided depending on the type and number of materials to be blocked. The sealant layer 44 is a layer for itself to be melt-bonded to join the laminated films 2 to form a bag. That is, the packaging bags are joined with the sealant layers 44 of the two laminated films 2 facing each other. As a joining method, heat sealing by heat welding can be adopted. As a method of heat sealing,
In addition to the normal bar sealing method, there are an ultrasonic sealing method and a high frequency sealing method. The temperature of the heat welding varies depending on conditions such as the type of the film, the thickness of the film, the pressing pressure, the pressing time, and the like.
It is performed at a temperature of about 0 to 180 ° C. This sealant layer 44
As a raw material of the olefin resin, an olefin-based resin such as low-density polyethylene, a polyethylene-vinyl acetate copolymer, or the like can be used. The base film 1 forming the base layer 42 is distributed,
What is necessary is just to have the strength which can endure preservation, and nylon, polyester, polypropylene, or these stretched films can be used. Since the base material film 1 made of these raw materials is tough, it has a high tear strength, and cannot make a cut by the force of a finger to start tearing. Therefore, by providing a part of low strength in the base film 1 (refer to the reference numeral 1b in FIG. 2A), the easy-opening portion 2b which can make the opening for opening the packaging bag only by the force of the fingers.
Create Further, when there is a layer having a high tear strength other than the base film 1 in the constituent layers of the laminated film 2,
Processing for providing a portion having a low tear strength is also performed on the layer, which will be described in detail later. Generally, the base film 1 has the highest tear strength among the laminated films. However, when the base film 1 is formed of a material having a low tear strength such as paper, the base film 1 has a high tear strength. A portion having a low tear strength is provided preferentially in a layer having the highest tear strength without providing a lowered portion, and a portion having a low tear strength is provided in another layer having a high tear strength as necessary. As a specific configuration of the laminated film 2, * P
ET 12 / PE 15 / AL 7 / PE 40, paper / PE / * PET /
PE / AL / PE, * PET / * ON / AL / PE, * P
ET / AL / * OPP / PE, * PET / PE / AL / P
E / * PE film, ON / AL / * PET / PE, etc. are conceivable. In the above display, PET is polyethylene terephthalate, PE is polyethylene, AL is aluminum foil, ON is stretched nylon, and OPP is stretched polypropylene. Layers to be roughened are indicated with an asterisk (*). ing. “/” Indicates a boundary between layers, and a subscript indicates a thickness of a layer in microns.
【００１８】つぎに、易開封部２ｂの好ましい作成方法
について説明する。基材フィルム１に対する加工方法に
限定はなく、貫通孔を設けるもの、貫通しない孔を設け
るもの、厚さの薄い箇所を部分的に設けるものなど、部
分的にフィルムの強度を低下することができるものであ
ればよい。基材フィルム１に貫通孔が設けられた場合に
も、熱溶着時の熱により溶融したシーラント層４４が流
れ込んで貫通孔を塞ぐため、さらに、図１に示すように
シール部分から易開封部がはみ出しても積層フィルム２
の気密性およびバリア性が保たれる。また、基材フィル
ム１に対するこれらの加工を行う手段としてもとくに限
定はない。一例としては図３に示すように、軸１０ａが
固定されたローラ１０の外周面１０ｂの一部に、加工部
材１１としてサンドペーパーを設けたものが利用でき
る。これに用いるサンドペーパーとしては、粒度５０〜
２００番程度のもがよく、特に粒度８０番程度のものが
好ましい。加工部材１１の形状及び寸法は、易開封部の
形状・寸法に合わせてあり、この加工部材１１をフィル
ムに押し当てて粗面加工し、必要に応じてさらに裁断す
ることにより、易開封部通りの形状、寸法を有する粗面
部を形成し得る。Next, a preferred method of forming the easy-open portion 2b will be described. The processing method for the base film 1 is not limited, and the strength of the film can be partially reduced, such as a method of providing a through hole, a method of providing a hole that does not penetrate, and a method of partially providing a thin portion. Anything should do. Even when a through-hole is provided in the base film 1, since the melted sealant layer 44 flows by the heat during the heat welding and closes the through-hole, as shown in FIG. Laminated film 2 even if it protrudes
Airtightness and barrier properties are maintained. There is no particular limitation on the means for performing these processes on the base film 1. As an example, as shown in FIG. 3, a roller in which sandpaper is provided as a processing member 11 on a part of an outer peripheral surface 10b of a roller 10 to which a shaft 10a is fixed can be used. The sandpaper used for this has a particle size of 50 to
The number is preferably about 200, particularly preferably about 80. The shape and dimensions of the processed member 11 are adjusted to the shape and dimensions of the easy-opening portion, and the processed member 11 is pressed against a film to roughen the surface, and further cut as necessary, so that A rough surface portion having the shape and dimensions described above can be formed.
【００１９】このローラ１０を図４に示すように、図示
しない走行機構により保持されつつ走行する基材フィル
ム１に対して、軸１０ａを中心に回転可能となり、か
つ、基材フィルムとの位置が調整可能となるように設け
る。さらに、このように設けたローラ１０を所定の制御
手段を用いて、加工部材１１の軸１０ａに対する周方向
の位置、回転速度、基材フィルムとの位置を調整する。
制御手段の指示により、ローラ１０が基材フィルム１の
送り速度に合わせて回転しながら基材フィルム１の所定
箇所に押圧する。ローラ１０に押圧された基材フィルム
１は、ローラ１０と図示しない金属ロールとの間に挟ま
れる。これにより、ローラ１０の加工部材１１に設けら
れたサンドペーパーが基材フィルム１の表面に傷痕を形
成し、粗面加工が施される。なお、基材フィルム１の粗
面加工が施される場所は、製袋時に熱溶着などの手段に
より接合されるシール部分である。As shown in FIG. 4, the roller 10 is rotatable around a shaft 10a with respect to the base film 1 running while being held by a running mechanism (not shown). Provided so that it can be adjusted. Further, the position of the processing member 11 in the circumferential direction with respect to the shaft 10a, the rotational speed, and the position with respect to the base material film are adjusted by using predetermined control means for the roller 10 thus provided.
According to an instruction from the control means, the roller 10 presses a predetermined portion of the base film 1 while rotating in accordance with the feed speed of the base film 1. The base film 1 pressed by the roller 10 is sandwiched between the roller 10 and a metal roll (not shown). As a result, the sandpaper provided on the processing member 11 of the roller 10 forms a scar on the surface of the base film 1 and roughening is performed. The place where the surface roughening of the base film 1 is performed is a seal portion to be joined by means such as heat welding during bag making.
【００２０】加工部材１１は基材フィルム１の特定箇所
の強度を低下させることができればよく、サンドペーパ
ーを用いたものに限らない。例えば、金属製の加工部材
１１の表面に複数の切刃や複数の錐状の突起を設けたけ
たものや、加工部材１１の表面に加熱部分を設けたもの
も適用できる。また、切刃や錐状の突起が加熱するよう
にしてもよい。また、図には、ローラ１０を一つだけ示
したが、必要に応じて複数のローラ１０を設けてもよ
い。加工位置の決定方法としては、以下に説明する方法
が可能である。図４に示すように、基材フィルム１に予
めレジマーク１ａ…１ａを印刷しておく。ローラ１０の
フィルム走行方向前方の所定の距離を隔てた場所には、
レジマークセンサ（不図示）を設ける。レジマークセン
サがレジマーク１ａを感知すると、コントローラに信号
が送られ、コントローラが制御信号をサーボドライバー
に送信する。サーボドライバーは制御信号に基づいてモ
ータを回転させる。モータの回転により、ローラ１０の
上下位置の調整および回転運動が行われる。これによれ
ば、レジマーク１ａから所定の距離を隔てた場所に常に
粗面加工１ｂが施される。The processed member 11 is not limited to the one using sandpaper as long as it can reduce the strength of a specific portion of the base film 1. For example, a metal member having a plurality of cutting blades or a plurality of conical protrusions on the surface of a metal processing member 11 or a member having a heating portion on the surface of the processing member 11 can be applied. Further, the cutting blade or the conical projection may be heated. Although only one roller 10 is shown in the figure, a plurality of rollers 10 may be provided as needed. As a method of determining the processing position, the method described below can be used. As shown in FIG. 4, the registration marks 1a... 1a are printed on the base film 1 in advance. At a place separated by a predetermined distance in front of the roller 10 in the film running direction,
A registration mark sensor (not shown) is provided. When the registration mark sensor detects the registration mark 1a, a signal is sent to the controller, and the controller sends a control signal to the servo driver. The servo driver rotates the motor based on the control signal. By the rotation of the motor, the vertical position of the roller 10 is adjusted and the rotation is performed. According to this, the rough surface processing 1b is always performed at a place separated by a predetermined distance from the registration mark 1a.
【００２１】また、図２の（ｂ）に示すように、積層フ
ィルムを形成するフィルムに、基材層４２（基材フィル
ム１）以外にも引き裂き強度が高い層４５が存在する場
合には、このフィルムにも合わせて粗面加工を施す。図
２の（ｂ）および（ｃ）に示すように、その粗面加工領
域４５ａは、基材層４２の粗面加工領域１ｂよりも広
く、基材層４２の粗面加工領域１ｂに重なるものであ
る。つまり、包装フィルムの材料とする積層フィルムの
２層以上のフィルムに対して粗面加工を施す場合には、
各フィルムの粗面加工領域の重なり合った部分がもっと
も引き裂き強度が低い領域、すなわち易開封部となる。
２層以上のフィルムに対して粗面加工を施す場合には、
いずれか一つの層を易開封部の領域通りに粗面加工し
（例えば図２（ｂ）、（ｃ）の符号２ｂ）、それ以外の
層は、易開封部となる領域を含むより広い領域（例えば
図２（ｂ）、（ｃ）の符号１ｂ）を粗面加工することが
できる。このようにすれば、狭い粗面加工領域１ｂの位
置は、広い粗面加工領域４５ａの範囲内であればよいた
め、粗面加工を施す場所の位置決め精度を抑えることが
できる。積層フィルムの２層以上のフィルムに対して粗
面加工を施す場合には、最も引き裂き強度が高いフィル
ムを易開封部の領域通りに粗面加工することにより、易
開封部とその周囲の引き裂き強度の差が大きくなり、ま
た、易開封部の周囲の引き裂き強度の低下が少ないの
で、好ましい。なお、図１に示すように、粗面加工領域
２ｂがシール領域２ｃの外にはみ出した場合にも、粗面
加工を施した層が粗面加工を施さない他の層に挟まれて
いるため気密性が確保される。ただし、図５に示すよう
に、粗面加工領域２ｂはシール領域２ｃとなる箇所内に
余裕をもって収まるように設けることが望ましい。As shown in FIG. 2B, when a layer 45 having a high tear strength exists in addition to the base layer 42 (base film 1) in the film forming the laminated film, Rough surface processing is performed according to this film. As shown in FIGS. 2B and 2C, the roughened area 45a is wider than the roughened area 1b of the base layer 42 and overlaps the roughened area 1b of the base layer 42. It is. In other words, when roughening is performed on two or more layers of a laminated film as a material for a packaging film,
The overlapping portion of the roughened regions of each film is the region having the lowest tear strength, that is, the easy-open portion.
When performing roughening on two or more layers of film,
Any one of the layers is roughened in accordance with the area of the easy-opening portion (for example, reference numeral 2b in FIGS. 2B and 2C). (For example, reference numeral 1b in FIGS. 2B and 2C) can be roughened. By doing so, the position of the narrow roughened region 1b may be within the range of the wide roughened region 45a, so that the positioning accuracy of the place where the roughened surface is to be processed can be suppressed. When roughening is performed on two or more layers of the laminated film, the film having the highest tear strength is roughened in the area of the easy-opening portion, so that the tearing strength of the easy-opening portion and its surroundings is improved. This is preferable because the difference in the tear strength around the easy-open portion is small. As shown in FIG. 1, even when the roughened region 2b protrudes outside the seal region 2c, the roughened layer is sandwiched by other layers that are not roughened. Airtightness is ensured. However, as shown in FIG. 5, it is desirable that the roughened region 2b be provided so as to be able to fit within the seal region 2c with a margin.
【００２２】以上のようにして粗面加工１ｂが施された
基材フィルム１に他のフィルム層が形成されて積層フィ
ルム２が作られる。この積層フィルム２を所定の形状に
切断し、内容物を収容すると共に所定の箇所を熱溶着に
よりシールすることにより包装袋が完成する。粗面加工
領域２ｂの形状は、図６に示すようにシール領域２ｃの
外側端縁からシール領域２ｃの幅方向に進むに連れて、
すなわち、開封方向に進むに連れて先細りとなる形状に
するとよい。このようにすれば、易開封部の切出し位置
に幅を持たせることができるので開封者が容易に易開封
部から切出すことができる。また、粗面加工が先細り状
に施されているので、シール領域２ｃを越えるまでに切
り口を粗面加工の先細りとなった先端部分に誘導して開
封位置をさらに正確に限定することができる。このよう
な先細り状の易開封部は、これに対応する先細り形状の
加工部材をフィルムに押し当てることによって形成でき
る。As described above, another film layer is formed on the base film 1 which has been subjected to the roughening process 1b, and a laminated film 2 is produced. The packaging film is completed by cutting the laminated film 2 into a predetermined shape, accommodating the contents, and sealing a predetermined portion by heat welding. As shown in FIG. 6, the shape of the rough surface processing region 2b is such that the shape proceeds from the outer edge of the seal region 2c in the width direction of the seal region 2c.
That is, the shape may be tapered as it proceeds in the opening direction. With this configuration, the opening position of the easy-opening portion can be provided with a width, so that the unsealing person can easily cut out from the easy-opening portion. Further, since the rough surface processing is performed in a tapered shape, the cut position can be guided to the tapered front end portion of the rough surface processing before the seal area 2c is exceeded, so that the opening position can be more accurately limited. Such a tapered easy-open portion can be formed by pressing a corresponding tapered processed member against the film.
【００２３】つぎに、積層フィルムから包装袋を製袋す
る方法を説明する。Next, a method for producing a packaging bag from a laminated film will be described.
【００２４】図７および図８は、一般的な四角形状の包
装袋を製袋する過程を示す図である。複雑な形状を有す
る袋に先立って、一般的な四角形状を有する包装袋の製
造について説明する。図７は、粗面加工の際に、積層フ
ィルム２の幅方向にローラ１０で断続的に加工が施さ
れ、袋への内容物の封入に際して、一袋毎にシリアルに
内容物を封入する製造手順を示している。図８は、粗面
加工の際に、積層フィルム２の長手方向に断続的にロー
ラ１０で加工が施され、袋への内容物の封入に際して、
複数の袋に一括してパラレルに内容物を封入する製造手
順を示している。包装袋の最終的な仕上がりの違いか
ら、以下これらを「シリアルの製法」および「パラレル
の製法」とそれぞれ呼ぶ。なお、両図の（ａ）中の矢印
Ｒはフィルムの走方向を、矢印Ｃは製袋時の折り畳みの
方向をそれぞれ示している。また、斜線を施した部分は
基材フィルム１に粗面加工１ｂを施した粗面加工領域２
ｂを示しており、製袋後に易開封部となる場所である。
積層フィルム２は矢印Ｃの方向に折りたたまれ、両図の
（ｂ）に示すようになる。この時、折りたたむ軸に対し
て対称となる位置にある粗面加工領域２ｂ，２ｂが互い
に重なるようになっている。なお、この例では、後述す
るように、折りたたまれることにより形成される端縁に
も易開封部が形成され、当該位置にも熱溶着が施され
る。この時、折りたたみ軸上の粗面加工領域２ｂが熱溶
着領域に含まれる。さらに、両図の（ｃ）に示すよう
に、内容物の封入口を残して、袋となる部分の３方、つ
まり、斜線を施した部分が熱溶着される。図７のシリア
ルの製法の場合は、まず、連続する袋のうちの先頭の袋
４に内容物が入れられる。つぎに、封入口４ａが熱溶着
により閉じられる。その後、袋４の後ろ側が、断線IV−
IVでカットされることにより図１に示す包装袋ができ上
がる。袋４に対するカット位置に余裕を持たせることに
より、先頭の袋に溶着されないスカート部４ｂが残り、
つぎの袋の封入口が確実に形成される。これを繰り返す
ことにより包装袋が一つずつ作成される。パラレル手順
の製法の場合は、連なる袋５に一括して内容物が入れら
れる。つぎに、直線状に並んだ封入口５ａが一度に熱溶
着される。最後に、袋間が断線V−Vでカットされて一度
に複数の包装袋ができ上がる。FIGS. 7 and 8 are views showing the process of making a general rectangular packaging bag. Prior to a bag having a complicated shape, production of a packaging bag having a general square shape will be described. FIG. 7 shows a manufacturing process in which a roller 10 is intermittently processed in the width direction of the laminated film 2 at the time of rough surface processing, and the contents are serially sealed for each bag when the contents are sealed in the bags. The procedure is shown. FIG. 8 shows that the roller 10 is intermittently processed in the longitudinal direction of the laminated film 2 at the time of rough surface processing, and the content is sealed in a bag.
The manufacturing procedure in which contents are sealed in a lump in a plurality of bags in a lump is shown. These are hereinafter referred to as a "cereal production method" and a "parallel production method", respectively, due to the difference in the final finish of the packaging bags. The arrow R in both figures (a) indicates the running direction of the film, and the arrow C indicates the direction of folding during bag making. The shaded portion is a roughened area 2 where the base film 1 is roughened 1b.
b shows a location that becomes an easy-opening portion after bag making.
The laminated film 2 is folded in the direction of arrow C, as shown in FIG. At this time, the rough surface processing regions 2b, 2b located at positions symmetrical with respect to the folding axis overlap each other. In this example, as will be described later, an easy-opening portion is also formed at the edge formed by folding, and heat welding is also performed at the position. At this time, the rough surface processing region 2b on the folding shaft is included in the heat welding region. Further, as shown in (c) of both figures, the three sides of the portion to be the bag, that is, the hatched portions are heat-welded, leaving the filling port of the contents. In the case of the cereal manufacturing method shown in FIG. 7, first, the contents are put into the leading bag 4 of the continuous bags. Next, the sealing port 4a is closed by heat welding. Then, the back side of the bag 4 is disconnected IV-
The packaging bag shown in FIG. 1 is completed by cutting with the IV. By giving a margin to the cutting position with respect to the bag 4, the skirt portion 4b that is not welded to the leading bag remains.
The enclosing opening of the next bag is formed reliably. By repeating this, packaging bags are created one by one. In the case of the manufacturing method of the parallel procedure, the contents are put into the continuous bags 5 in a lump. Next, the sealing ports 5a arranged in a straight line are thermally welded at a time. Finally, the bags are cut along the line V-V to make a plurality of packaging bags at once.
【００２５】図９から図１３は、複雑な形状を有する包
装袋の熱溶着部に易開封部を設けた例である。これは、
ボトル型包装袋３０でありボトル底から首部３３までガ
セットを有し、その首部３３に易開封部３３ａ…３３ａ
を備えている。従来のように、積層フィルム２が折り曲
げられる場所に、部分的な易開封部を設ける方法では、
このような複雑な形状をもつ包装袋に易開封部を設ける
ことはできない。すなわち、積層フィルム２の折り曲げ
加工によっては、ボトル型包装袋３０の様な形状の形成
は不可能である。また、従来の技術では、ローラの側面
全体に粗面加工を施すための加工部材を設け、積層フィ
ルム２に対してこのローラを連続的にかけていた。その
ため、連続的で直線的な粗面加工領域しか得ることがで
きなかった。曲線などの複雑な形状に合わせてローラを
かけることは、技術的に非常に困難である。したがっ
て、図１４に示すように、粗面加工を施したい領域６１
が端縁Ａ上に有り、端縁Ａの形状が、端縁Ａの開封位置
の延長線がヒートシールが施される端縁以外の部分を通
過するような複雑な場合、従来の技術では符号６２にて
示す直線領域全体に粗面加工を施してしまう。これで
は、製袋時の易開封部の位置を限定することができない
ばかりか、包装袋の製品強度を不用意に低下させてしま
う。以下に示す方法による包装袋は、複雑な形状を持つ
にもかかわらず、易開封部による開封位置の限定が可能
である。FIGS. 9 to 13 show an example in which a heat-sealing portion of a packaging bag having a complicated shape is provided with an easy-opening portion. this is,
The bottle-type packaging bag 30 has a gusset from the bottom of the bottle to the neck 33, and the neck 33 has an easy-open portion 33a ... 33a.
It has. In a conventional method of providing a partially easy-open portion at a place where the laminated film 2 is bent,
A packaging bag having such a complicated shape cannot be provided with an easy-opening portion. That is, it is impossible to form a shape like the bottle-type packaging bag 30 by bending the laminated film 2. Further, in the related art, a processing member for roughening the entire side surface of the roller is provided, and the roller is continuously applied to the laminated film 2. Therefore, only a continuous and linear roughened region can be obtained. Rolling to a complicated shape such as a curve is technically very difficult. Therefore, as shown in FIG.
Is located on the edge A, and the shape of the edge A is complicated in such a manner that an extension of the opening position of the edge A passes through a portion other than the edge to be heat-sealed. Rough surface processing is performed on the entire linear region indicated by 62. In this case, not only can the position of the easy-opening portion be limited at the time of bag making, but also the product strength of the packaging bag is inadvertently reduced. Although the packaging bag according to the method described below has a complicated shape, it is possible to limit the opening position by the easy opening portion.
【００２６】図１０に示すように、このボトル型包装袋
３０は、本体部３１，３１と、ガセット部３２，３２と
を有している。本体部３１，３１およびガセット部３
２，３２は、図１０の（ａ），（ｂ）に示す形状を有す
る積層フィルム２の切片を熱溶着することにより形成さ
れる。本体部３１，３１およびガセット部３２，３２
は、首部３３となる幅狭部３１ａ，３２ａの両側縁に粗
面加工が施された粗面加工領域３１ｂ，３１ｂ，３２
ｂ，３２ｂをそれぞれ有している。As shown in FIG. 10, the bottle-type packaging bag 30 has main bodies 31, 31 and gussets 32, 32. Body part 31, 31 and gusset part 3
Reference numerals 2 and 32 are formed by heat-welding sections of the laminated film 2 having the shapes shown in FIGS. Body portions 31, 31 and gusset portions 32, 32
Are roughened regions 31b, 31b, 32 in which rough edges are formed on both side edges of narrow portions 31a, 32a to be neck portions 33.
b and 32b.
【００２７】本体部３１は、図１１に示すように、幅狭
部３１ａとなる場所に予め粗面加工を施した粗面加工領
域３１ｂ…３１ｂを有する積層フィルム２を図中に実線
で示す型に切り抜くことにより形成される。なお、粗面
加工は積層フィルム２の最も引き裂き強度が高い基材層
４２に対して行われ、他にも引き裂き強度が高い層４５
がある場合にはこの層に対しても粗面加工が行われる。
同様に、ガセット部３２は、予め粗面加工領域３２ｂ…
３２ｂを有する積層フィルム２を図１２中に実線で示す
型に切り抜くことにより形成される。As shown in FIG. 11, the main body 31 is formed by molding a laminated film 2 having roughened regions 31b... It is formed by cutting out. The rough surface processing is performed on the base layer 42 having the highest tear strength of the laminated film 2, and the other layer 45 having the highest tear strength is also provided.
If there is, roughening is also performed on this layer.
Similarly, the gusset part 32 has a rough surface processing area 32b.
It is formed by cutting the laminated film 2 having 32b into a mold shown by a solid line in FIG.
【００２８】つぎに、ガセット部３２，３２が、中央部
（図１０の（ｂ）に破線で示す位置）で左右二つ折りさ
れる。図１３に示すように、二つ折りされたガセット部
３２，３２を本体部３１，３１で挟み込む。ガセット部
３２，３２の縁と、本体部３１，３１の縁と（図９中に
符号３０ａで示す斜線領域）が熱溶着により接合され
る。なお、この段階では、上端開口部３４は密封されな
い。このとき、本体部３１の粗面加工領域３１ｂとガセ
ット部３２の粗面加工領域３２ｂとがそれぞれ重なり合
うように形成されており、粗面加工領域３１ｂと粗面加
工領域３２ｂとの接合により、易開封部３３ａが形成さ
れる。Next, the gusset portions 32 are folded right and left at the center (the position indicated by the broken line in FIG. 10B). As shown in FIG. 13, the gusset portions 32, which are folded in half, are sandwiched between the main body portions 31, 31. The edges of the gusset portions 32, 32 and the edges of the main body portions 31, 31 (hatched regions indicated by reference numeral 30a in FIG. 9) are joined by heat welding. At this stage, the upper end opening 34 is not sealed. At this time, the rough surface processing region 31b of the main body 31 and the rough surface processing region 32b of the gusset portion 32 are formed so as to overlap with each other, and the rough surface processing region 31b and the rough surface processing region 32b are easily joined together. An opening portion 33a is formed.
【００２９】つぎに、ガセット部３２，３２を開いて、
ボトル型包装袋３０の底を箱形に成型する（図９参
照）。その後、ボトル型包装袋３０内部に液体洗剤など
の液体が主に充填され、最後に、上端開口部３４が熱溶
着により接合される。こうして作られたボトル型包装袋
３０は、開封に際して易開封部３３ａ…３３ａから手指
の力のみで容易に切り口を開いて開封することが可能と
なる。Next, the gusset parts 32, 32 are opened,
The bottom of the bottle-type packaging bag 30 is molded into a box shape (see FIG. 9). Thereafter, the inside of the bottle-type packaging bag 30 is mainly filled with a liquid such as a liquid detergent, and finally, the upper end opening 34 is joined by heat welding. The thus-formed bottle-type packaging bag 30 can be easily opened and opened by only the force of the fingers from the easy-opening portions 33a to 33a when opening.
【００３０】[0030]
【発明の効果】以上に説明したように、本発明の包装袋
は、開封場所が限定されており、かつ、自由度の高い形
状を有することができる。また、本発明の包装袋の製造
方法によればこのような包装袋を容易に得ることができ
る。As described above, the packaging bag of the present invention has a limited opening location and can have a shape with a high degree of freedom. According to the method for manufacturing a packaging bag of the present invention, such a packaging bag can be easily obtained.
【図１】本発明が適用され、図６または図７の製造過程
で作成された四角形状の包装袋を示す平面図。FIG. 1 is a plan view showing a square-shaped packaging bag to which the present invention is applied and which is produced in the manufacturing process of FIG. 6 or FIG.
【図２】本発明が適用された積層フィルムの断面の断面
図で、（ａ）は、基材フィルムのみに易開封部作成のた
めの粗面加工を施した積層フィルムの断面図、（ｂ）
は、基材層の他に引き裂き強度が高い層に対しても加工
を施した積層フィルムの断面図、（ｃ）は、（ｂ）の積
層フィルムの平面図。FIG. 2 is a cross-sectional view of a cross-section of a laminated film to which the present invention is applied. FIG. 2 (a) is a cross-sectional view of a laminated film obtained by subjecting only a base film to a roughening process for forming an easy-open portion, and (b). )
3A is a cross-sectional view of a laminated film obtained by processing a layer having a high tear strength in addition to a base material layer, and FIG. 3C is a plan view of the laminated film of FIG.
【図３】基材フィルムに易開封部作成のための粗面加工
を施すローラを示す斜視図。FIG. 3 is a perspective view showing a roller for performing a roughening process on a base film for forming an easily-opened portion.
【図４】ローラを用いて基材フィルムに粗面加工を施す
様子を示す斜視図。FIG. 4 is a perspective view showing a state in which a base film is roughened using a roller.
【図５】図１における、Ｖ部の拡大図。FIG. 5 is an enlarged view of a portion V in FIG.
【図６】図１における、Ｖ部の拡大図。FIG. 6 is an enlarged view of a portion V in FIG.
【図７】積層フィルムから四角形状の包装袋を製造する
に際しての積層フィルムの加工過程を示す図で、（ａ）
は、積層フィルムから切出された積層フィルムを示す平
面図、（ｂ）は、折りたたまれた積層フィルムを示す平
面図、（ｃ）は内容物の封入口を残して熱用着された積
層フィルムを示す平面図。FIGS. 7A and 7B are diagrams showing a process of manufacturing a laminated film when producing a rectangular packaging bag from the laminated film, and FIG.
Is a plan view showing the laminated film cut out from the laminated film, (b) is a plan view showing the folded laminated film, and (c) is a laminated film which has been heated and used except for a sealing hole for contents. FIG.
【図８】積層フィルムから四角形状の包装袋を製造する
に際しての、積層フィルムの加工過程を示す図で、
（ａ）は、積層フィルムから切出された積層フィルムを
示す平面図、（ｂ）は、折りたたまれた積層フィルムを
示す平面図、（ｃ）は内容物の封入口を残して熱用着さ
れた積層フィルムを示す平面図。FIG. 8 is a view showing a process of processing a laminated film when producing a rectangular packaging bag from the laminated film;
(A) is a plan view showing a laminated film cut out of the laminated film, (b) is a plan view showing a folded laminated film, and (c) is heat-fitted while leaving a sealing hole for contents. FIG.
【図９】本発明が適用されたボトル型の包装袋を示す斜
視図。FIG. 9 is a perspective view showing a bottle-type packaging bag to which the present invention is applied.
【図１０】図７のボトル型の包装袋を構成する積層フィ
ルムの切片を示す図で、（ａ）は、本体部の積層フィル
ム切片を示す平面図、（ｂ）は、ガセット部の積層フィ
ルム切片を示す平面図。FIGS. 10A and 10B are views showing a section of a laminated film constituting the bottle-shaped packaging bag of FIG. 7, wherein FIG. 10A is a plan view showing a section of a laminated film of a main body, and FIG. The top view showing a section.
【図１１】ボトル型包装袋の本体部を積層フィルムから
切り抜く様子を示す平面図。FIG. 11 is a plan view showing a state in which the main body of the bottle-type packaging bag is cut out from the laminated film.
【図１２】ボトル型包装袋のガセット部を積層フィルム
から切り抜く様子を示す平面図。FIG. 12 is a plan view showing a state in which a gusset portion of a bottle-type packaging bag is cut out from a laminated film.
【図１３】二つ折りしたガセット部を本体部で挟んで、
ボトル型包装袋を形成する様子を示す斜視図。FIG. 13 sandwiches the gusset part folded in half by the main body part,
The perspective view which shows a mode that a bottle type packaging bag is formed.
【図１４】従来の技術で、本体部に粗面加工を施したと
きの様子を示す平面図。FIG. 14 is a plan view showing a state in which a main body has been subjected to roughening processing according to a conventional technique.
１ 基材フィルム １ａ レジマーク １ｂ 粗面加工（粗面加工領域） ２ 積層フィルム ２ｂ 易開封部 ２ｃ 接合箇所（シール部） ２ｂ 粗面加工領域 ４ｂ スカート部 ２ｂ，２ｂ 粗面加工領域 ４，５ 袋 ４ａ，５ａ 封入口 １０ ローラ １０ａ 軸 １０ｂ 外周面 １１ 加工部材 ３０ ボトル型包装袋 ３１ 本体部 ３１ａ 幅狭部 ３１ｂ 粗面加工領域 ３２ ガセット部 ３２ａ 幅狭部 ３２ｂ 粗面加工領域 ３３ 首部 ３３ａ 易開封部 ３４ 上端開口部 ４２ 基材層（基材フィルム） ４３ バリア層 ４４ シーラント層 ４５ 引き裂き強度が高い層 ４５ａ 粗面加工領域 DESCRIPTION OF SYMBOLS 1 Base film 1a Registration mark 1b Rough surface processing (rough surface processing area) 2 Laminated film 2b Easy opening part 2c Joining part (seal part) 2b Rough surface processing area 4b Skirt part 2b, 2b Rough surface processing area 4,5 bags 4a, 5a Enclosure opening 10 Roller 10a Shaft 10b Outer peripheral surface 11 Processing member 30 Bottle-type packaging bag 31 Main body 31a Narrow portion 31b Rough surface processing region 32 Gusset portion 32a Narrow portion 32b Rough surface processing region 33 Neck 33a Easy opening 34 Upper opening 42 Base layer (base film) 43 Barrier layer 44 Sealant layer 45 Layer with high tear strength 45a Roughened area
Claims (9)
曲げ及び／又は重ね合わせ、端縁部を密封してなる包装
袋であって、当該包装袋の開封を開始させるべき開封位
置が、積層フィルム同士を貼り合わせて包装袋の端縁部
に形成したシール部の外側端縁上の一部領域に限定され
ており、前記開封位置のシール部の外側端縁からシール
部の幅方向の少なくとも途中までにかけて、積層フィル
ム中の少なくとも最も引き裂き強度が高いフィルム層の
引き裂き強度を低下させた易開封部が設けられているこ
とを特徴とする、包装袋。1. A packaging bag obtained by folding and / or laminating one or more laminated films and sealing an edge thereof, wherein an opening position at which the packaging bag is to be opened is a laminated position. It is limited to a partial region on the outer edge of the seal portion formed by bonding the films to each other at the edge portion of the packaging bag, and at least in the width direction of the seal portion from the outer edge of the seal portion at the opening position. A packaging bag, characterized by being provided with an easy-open portion in which the tear strength of at least the film layer having the highest tear strength in the laminated film is reduced halfway.
縁から前記シール部の幅方向に進むに従い先細りとなる
形状を有していることを特徴とする、請求項１記載の包
装袋。2. The packaging bag according to claim 1, wherein the easy-opening portion has a shape that tapers from an outer edge of the seal portion in a width direction of the seal portion. .
ィルム層と最内層であるシーラント層を有していること
を特徴とする、請求項１記載の包装袋。3. The packaging bag according to claim 1, wherein said laminated film has at least a base film layer and an innermost sealant layer.
裂き強度が高い層の前記易開封部の領域に貫通孔を有す
る粗面加工が施され、さらに、当該積層フィルムは最内
層であるシーラント層を有していることを特徴とする、
請求項１記載の包装袋。4. A roughened surface having a through hole in at least the area of the easy-opening portion of the layer having the highest tear strength of the laminated film, and the laminated film has a sealant layer which is an innermost layer. Characterized by the fact that
The packaging bag according to claim 1.
が高い層を含む２層以上に引き裂き強度を低下させた部
分が形成されており、そのうちの一層には引き裂き強度
を低下させた部分が前記易開封部の領域通りに形成され
ており、その他の層には引き裂き強度を低下させた部分
が前記易開封部の領域を含むより広い領域に形成されて
いることを特徴とする、請求項１記載の包装袋。5. A layer having a reduced tear strength is formed in at least two layers including a layer having the highest tear strength in the laminated film, and a portion having a reduced tear strength is formed on one of the layers. 2. The device according to claim 1, wherein a portion having a reduced tear strength is formed in a wider area including the area of the easy-opening portion in the other layers. Packaging bag.
縁上であって、前記包装袋のシール部以外の部分を通過
する開封位置の延長線を引くことができる領域か、又
は、曲線状に形成されている領域に限定されていること
を特徴とする、請求項ｌ記載の包装袋。6. The unsealing position is a region on the outer edge of the sealing portion where an extension of the unsealing position passing through a portion other than the sealing portion of the packaging bag can be drawn, or a curve. The packaging bag according to claim 1, wherein the packaging bag is limited to a region formed in a shape.
フィルム同士を貼り合わせて包装袋の端縁部に形成した
シール部の外側端縁上の一部領域に限定されており、前
記開封位置のシール部の外側端縁からシール部の幅方向
の少なくとも途中までにかけて、積層フィルム中の少な
くとも最も引き裂き強度の高いフィルム層に引き裂き強
度を低下させた易開封部が設けられている包装袋の製造
方法であって、最も引き裂き強度の高いフィルム層の易
開封部となる領域に、当該易開封部の形状及び寸法に合
わせてローラの外周面の一部に設けられた加工部材を押
し当てて当該領域の引き裂き強度を部分的に低下させ、
当該引き裂き強度を部分的に低下させたフィルムと別の
層とを積層して積層フィルムを作成し、このようにして
作成した１枚又は２枚以上の積層フィルムを、折り曲げ
及び／又は重ね合わせ、易開封部となる領域の位置を合
わせ、端縁部のうち少なくとも開放端において当接し合
う積層フィルムの端縁同士を貼り合わせて密封すること
を特徴とする、包装袋の製造方法。7. An opening position at which opening is to be started is limited to a partial region on an outer edge of a seal portion formed at an edge portion of the packaging bag by laminating the laminated films, and the opening position is set. Production of a packaging bag in which at least from the outer edge of the seal portion to at least halfway in the width direction of the seal portion, the film layer having the highest tear strength in the laminated film is provided with an easy-opening portion having reduced tear strength. In the method, the processing member provided on a part of the outer peripheral surface of the roller according to the shape and size of the easy-opening portion is pressed against the region to be the easy-opening portion of the film layer having the highest tear strength. Partially reduce the tear strength of the area,
Laminating the film with the tear strength partially reduced and another layer to form a laminated film, bending one and two or more laminated films thus formed, and / or laminating, A method for producing a packaging bag, comprising: aligning a position of an area to be an easy-open portion, and bonding and sealing the edges of the laminated film that abut at least at the open end of the edges.
フィルム同士を貼り合わせて包装袋の端縁部に形成した
シール部の外側端縁上の一部領域に限定されており、前
記開封位置のシール部の外側端縁からシール部の幅方向
の少なくとも途中までにかけて、積層フィルム中の少な
くとも最も引き裂き強度の高いフィルム層に引き裂き強
度を低下させた易開封部が設けられている包装袋の製造
方法であって、２以上のフィルムを準備し、そのうち一
のフィルムに、前記易開封部の形状及び寸法に合わせて
ローラの外周面の一部に設けられた加工部材を押し当て
て当該易開封部となる領域通りに引き裂き強度を低下さ
せた部分を形成し、その他のフィルムに、引き裂き強度
を低下させた部分を前記易開封部の領域を含むより広い
領域に形成し、上記各フィルム及び必要に応じて他の層
を、易開封部となる領域の位置を合わせ、任意の順序に
積層して積層フィルムを作成し、このようにして作成し
た１枚又は２枚以上の積層フィルムを、折り曲げ及び／
又は重ね合わせ、易開封部となる領域の位置を合わせ、
端縁部のうち少なくとも開放端において当接し合う積層
フィルムの端縁同士を貼り合わせて密封することを特徴
とする、包装袋の製造方法。8. An opening position at which opening is to be started is limited to a partial area on an outer edge of a seal portion formed at an edge portion of the packaging bag by laminating the laminated films, and the opening position is selected. Production of a packaging bag in which at least from the outer edge of the seal portion to at least halfway in the width direction of the seal portion, the film layer having the highest tear strength in the laminated film is provided with an easy-opening portion having reduced tear strength. A method comprising preparing two or more films, and pressing a processing member provided on a part of the outer peripheral surface of a roller according to the shape and dimensions of the easy-opening portion against one of the films. Forming a portion with reduced tear strength according to the region to be a part, in other films, forming a portion with reduced tear strength in a wider area including the area of the easy-open portion, Each film and other layers as necessary, the position of the area to be the easy-opening part is aligned, and laminated in an arbitrary order to form a laminated film, and one or two or more laminated layers thus prepared The film is folded and / or
Or superimpose, align the position of the area to be easy opening,
A method for manufacturing a packaging bag, comprising bonding and sealing the edges of a laminated film that abuts at least at an open end of the edges.
ムの外縁であって当該積層フィルム上の外縁以外の部分
を通過する開封位置の延長線を引くことのできる部分か
又は曲線状に形成された部分から内側の少なくとも途中
までにかけて配置されるように、前記積層フィルムを最
終形態である包装袋の形状に合わせて裁断し、裁断した
積層フィルムを折り曲げ及び／又は他のフィルムと重ね
合わせて、端縁部を密封することを特徴とする、請求項
７または８記載の製造方法。9. The area which becomes the easy-opening portion is an outer edge of the laminated film, and a portion where an extension of an opening position passing through a portion other than the outer edge on the laminated film can be drawn or formed in a curved shape. The laminated film is cut in accordance with the shape of the packaging bag as the final form so that the laminated film is arranged at least halfway inside from the cut portion, and the cut laminated film is folded and / or overlapped with another film. 9. The method according to claim 7, wherein the edge is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20162599A JP3815923B2 (en) | 1999-07-15 | 1999-07-15 | Packaging bag and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20162599A JP3815923B2 (en) | 1999-07-15 | 1999-07-15 | Packaging bag and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001031111A true JP2001031111A (en) | 2001-02-06 |
| JP3815923B2 JP3815923B2 (en) | 2006-08-30 |
Family
ID=16444178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20162599A Expired - Fee Related JP3815923B2 (en) | 1999-07-15 | 1999-07-15 | Packaging bag and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3815923B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003035504A1 (en) * | 2001-10-26 | 2003-05-01 | Hosokawa Yoko Co., Ltd. | Packaging member with easy-opening means |
| JP2007297089A (en) * | 2006-04-28 | 2007-11-15 | Ishida Co Ltd | Packaging bag having barrier property superior in unsealability |
| JP2009241993A (en) * | 2008-04-01 | 2009-10-22 | Taisei Lamick Co Ltd | Self-standing type packaging bag and its bag-making and filling-up method |
| JP2010228817A (en) * | 2010-07-23 | 2010-10-14 | Toppan Printing Co Ltd | Method for manufacturing easily openable packaging bag |
| JP2013001440A (en) * | 2011-06-20 | 2013-01-07 | Toppan Printing Co Ltd | Easy-to-cut pouch |
| JP2013032186A (en) * | 2012-09-25 | 2013-02-14 | Ishida Co Ltd | Packaging bag with barrier performance having improved openability |
| JP2014159302A (en) * | 2014-04-09 | 2014-09-04 | Toppan Printing Co Ltd | Easy-to-cut pouch |
| JP2019199304A (en) * | 2018-05-14 | 2019-11-21 | 株式会社細川洋行 | Gusset bag and content storage body |
-
1999
- 1999-07-15 JP JP20162599A patent/JP3815923B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003035504A1 (en) * | 2001-10-26 | 2003-05-01 | Hosokawa Yoko Co., Ltd. | Packaging member with easy-opening means |
| US7470062B2 (en) | 2001-10-26 | 2008-12-30 | Hosokawa Yoko Co., Ltd. | Packaging member with easy-opening means |
| JP2007297089A (en) * | 2006-04-28 | 2007-11-15 | Ishida Co Ltd | Packaging bag having barrier property superior in unsealability |
| JP2009241993A (en) * | 2008-04-01 | 2009-10-22 | Taisei Lamick Co Ltd | Self-standing type packaging bag and its bag-making and filling-up method |
| JP2010228817A (en) * | 2010-07-23 | 2010-10-14 | Toppan Printing Co Ltd | Method for manufacturing easily openable packaging bag |
| JP2013001440A (en) * | 2011-06-20 | 2013-01-07 | Toppan Printing Co Ltd | Easy-to-cut pouch |
| JP2013032186A (en) * | 2012-09-25 | 2013-02-14 | Ishida Co Ltd | Packaging bag with barrier performance having improved openability |
| JP2014159302A (en) * | 2014-04-09 | 2014-09-04 | Toppan Printing Co Ltd | Easy-to-cut pouch |
| JP2019199304A (en) * | 2018-05-14 | 2019-11-21 | 株式会社細川洋行 | Gusset bag and content storage body |
| JP7382738B2 (en) | 2018-05-14 | 2023-11-17 | 株式会社細川洋行 | Gazette bag and contents storage |
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| Publication number | Publication date |
|---|---|
| JP3815923B2 (en) | 2006-08-30 |
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