JPH11292093A - Easily openable packaging bag and its manufacture - Google Patents
Easily openable packaging bag and its manufactureInfo
- Publication number
- JPH11292093A JPH11292093A JP10115876A JP11587698A JPH11292093A JP H11292093 A JPH11292093 A JP H11292093A JP 10115876 A JP10115876 A JP 10115876A JP 11587698 A JP11587698 A JP 11587698A JP H11292093 A JPH11292093 A JP H11292093A
- Authority
- JP
- Japan
- Prior art keywords
- packaging bag
- plastic film
- easy
- laser light
- laser beam
- 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)
- Packages (AREA)
- Making Paper Articles (AREA)
- Wrappers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は製造が容易で開封性
が優れるとともに、十分な内容物保護性を有する易開封
性包装袋及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 an easily openable packaging bag which is easy to produce and has excellent openability, and has sufficient protective properties for contents, and a method for producing the same.
【０００２】[0002]
【従来の技術】プラスチックフイルムにより形成された
包装袋の開封を容易にするために、包装袋に砥石、刃物
等による機械加工や、レーザ加工、熱加工、放電加工等
によりミシン目や薄肉弱化部等の易開封加工部を形成す
る種々の技術が提案されている。これら従来の技術で
は、包装袋に形成される易開封加工部は、（１）製袋後
に包装袋の両面から易開封加工部を形成するか又は
（２）包装袋を構成するフイルムの開封部となる部分に
あらかじめ易開封加工部を形成した後に製袋することに
より設けられていた。2. Description of the Related Art In order to facilitate opening of a packaging bag formed of a plastic film, the packaging bag is machined with a grindstone, a blade, or the like, or is subjected to laser machining, thermal machining, electric discharge machining, or the like to form a perforated or thinned portion. Various techniques for forming an easily-opened processed portion have been proposed. In these conventional techniques, the easy-opening portion formed on the packaging bag is either (1) formed with the easy-opening portion from both sides of the packaging bag after the bag is made, or (2) opened with the opening portion of the film constituting the packaging bag. It was provided by forming an easy-opening portion in advance in a portion to be formed and then making a bag.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、これら
従来の技術では包装袋の両面に形成する易開封加工部の
位置合わせが困難であり、両面に形成する易開封加工部
の位置がわずかに（０．５ｍｍ程度）ずれた場合には、
開封時の開封方向が一定せず開封性が悪くなるという問
題点がある。また、包装袋形成後に袋の片面から包装袋
を貫通するミシン目状の易開封加工部を形成した場合に
は、位置合わせの問題は解消されるものの包装袋の密封
性が失なわれ、包装袋に収納する内容物の保護性が著し
く低下するという欠点がある。However, in these conventional techniques, it is difficult to position the easy-opening portions formed on both sides of the packaging bag, and the positions of the easy-opening portions formed on both sides are slightly (0). 0.5mm)
There is a problem that the opening direction at the time of opening is not constant and the opening property is deteriorated. In addition, if a perforated easy-opening portion that penetrates the packaging bag from one side of the bag is formed after the formation of the packaging bag, the problem of alignment is solved, but the sealing performance of the packaging bag is lost, and the packaging is lost. There is a disadvantage that the protection of the contents stored in the bag is significantly reduced.
【０００４】したがって、本発明はこれら従来技術の問
題点を解消して、プラスチックフイルムにより形成され
た包装袋の両面に、位置ずれのない易開封加工部を設け
ることによって、開封方向が一定し易開封性が改善され
るとともに、内容物の保護性にも優れる包装袋及びその
製造方法を提供することを目的とするものである。[0004] Therefore, the present invention solves these problems of the prior art, and provides an easy-opening portion without misalignment on both sides of a packaging bag formed of a plastic film, so that the opening direction is easily fixed. An object of the present invention is to provide a packaging bag having improved openability and excellent protection of contents, and a method for producing the same.
【０００５】[0005]
【課題を解決するための手段】本発明では、上記の課題
を解決するために以下の構成をとるものである。 １．レーザ光を吸収し易いプラスチックフイルム層とレ
ーザ光を吸収しにくいプラスチックフイルム層を含む積
層フイルムにより形成した包装袋において、包装袋の開
封予定部の両面に袋の片面からレーザ光を照射して形成
された積層フイルムを貫通しない易開封加工部を有する
易開封性包装袋。 ２．易開封加工部が積層フイルムを構成するレーザ光を
吸収し易いプラスチックフイルム層に０．０５〜０．３
０ｍｍ間隔で形成された加工孔であることを特徴とする
１に記載の易開封性包装袋。 ３．包装袋のレーザ光を照射した側の加工孔の面積が包
装袋の反対側の加工孔の面積よりも大きいことを特徴と
する２に記載の易開封性包装袋。 ４．包装袋がレーザ光を吸収し易いプラスチックフイル
ムを外層とし、レーザ光を吸収しにくいプラスチックフ
イルム層を内層として形成したものであることを特徴と
する１〜３のいずれか１項に記載の易開封性包装袋。 ５．レーザ光を吸収し易いプラスチックフイルム層とレ
ーザ光を吸収しにくいプラスチックフイルム層を含む積
層フイルムにより形成した包装袋の片面から高出力のレ
ーザ光を照射することによって、包装袋の両面に積層フ
イルムを貫通しない易開封加工部を形成することを特徴
とする易開封性包装袋の製造方法。 ６．照射するレーザ光が高出力のパルス発振タイプのレ
ーザ光であることを特徴とする５に記載の易開封性包装
袋の製造方法。 ７．レーザ光を吸収し易いプラスチックフイルム層に易
開封加工部として０．０５〜０．３０ｍｍ間隔で加工孔
が形成される条件下にレーザ光を照射することを特徴と
する５又は６に記載の易開封性包装袋の製造方法。 ８．レーザ光のピーク出力が２０〜２００Ｗであり、パ
ルス幅が１００〜２００μｓｅｃであることを特徴とす
る５〜７のいずれか１項に記載の易開封性包装袋の製造
方法。 ９．レーザ光を吸収し易いプラスチックフイルム層を外
層とし、レーザ光を吸収しにくいプラスチックフイルム
層を内層として包装袋を形成することを特徴とする５〜
８のいずれか１項に記載の易開封性包装袋の製造方法。According to the present invention, the following structure is adopted to solve the above-mentioned problems. 1. In a packaging bag made of a laminated film that contains a plastic film layer that easily absorbs laser light and a plastic film layer that does not easily absorb laser light, it is formed by irradiating laser light from one side of the bag on both sides of the package bag to be opened. An easy-open packaging bag having an easy-open processing portion that does not penetrate the laminated film. 2. An easy-opening portion is formed on the plastic film layer that easily absorbs the laser light constituting the laminated film by 0.05 to 0.3.
2. The easy-open packaging bag according to 1, wherein the processing bags are formed with holes formed at 0 mm intervals. 3. 3. The easy-open packaging bag according to 2, wherein the area of the processing hole on the side of the packaging bag irradiated with the laser beam is larger than the area of the processing hole on the opposite side of the packaging bag. 4. The easy opening according to any one of claims 1 to 3, wherein the packaging bag is formed by using a plastic film that easily absorbs laser light as an outer layer and a plastic film layer that hardly absorbs laser light as an inner layer. Packaging bag. 5. By irradiating high-power laser light from one side of a packaging bag formed of a laminated film including a plastic film layer that easily absorbs laser light and a plastic film layer that is difficult to absorb laser light, the laminated film is applied to both sides of the packaging bag. A method for producing an easily-openable packaging bag, wherein an easily-opened processed portion that does not penetrate is formed. 6. 6. The method for producing an easy-open packaging bag according to 5, wherein the laser light to be irradiated is a high-output pulse oscillation type laser light. 7. 7. An easy-to-use laser beam according to 5 or 6, wherein the laser beam is irradiated under the condition that processing holes are formed at 0.05 to 0.30 mm intervals as easy-opening portions in the plastic film layer which easily absorbs laser light. A method for producing an openable packaging bag. 8. 8. The method for producing an easy-open packaging bag according to any one of 5 to 7, wherein a peak output of the laser beam is 20 to 200 W and a pulse width is 100 to 200 μsec. 9. The packaging bag is formed by using a plastic film layer which easily absorbs laser light as an outer layer and a plastic film layer which hardly absorbs laser light as an inner layer.
9. The method for producing the easily-openable packaging bag according to any one of items 8 to 8.
【０００６】[0006]
【発明の実施の形態】本発明では、少なくとも１層のレ
ーザ光を吸収し易いプラスチックフイルム層と、少なく
とも１層のレーザ光を吸収しにくいプラスチックフイル
ム層を含む積層フイルムにより包装袋を構成する。レー
ザ光を吸収し易いプラスチックフイルム層を構成する材
料としては、例えばナイロン６、ナイロン６６等のポリ
アミド樹脂、ポリエチレンテレフタレート等のポリエス
テル樹脂、ポリ塩化ビニル樹脂、エチレンビニルアルコ
ール共重合体等が挙げられ、これらは単独で又は２種以
上を混合して使用することができる。また、レーザ光を
吸収しにくいプラスチックフイルム層にインキ（顔
料）、カーボン、マイカなどのようにレーザ光を吸収し
易い物質を混合又は塗布することによって、レーザ光を
吸収し易いプラスチックフイルム層を構成してもよい。
レーザ光を吸収しにくいプラスチックフイルム層を構成
する材料としては、例えばポリエチレン、ポリプロピレ
ン等のポリオレフィン系樹脂等が挙げられ、これらは単
独で又は２種以上を混合して使用することができる。積
層フイルムを構成するプラスチックフイルムは未延伸
の、或いは一軸又は二軸延伸したフイルムとして用いら
れる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a packaging bag is constituted by at least one layer of a plastic film layer which easily absorbs laser light and at least one layer of a laminated film including a plastic film layer which hardly absorbs laser light. Examples of the material constituting the plastic film layer that easily absorbs laser light include polyamide resins such as nylon 6, nylon 66, polyester resins such as polyethylene terephthalate, polyvinyl chloride resins, and ethylene vinyl alcohol copolymers. These can be used alone or in combination of two or more. In addition, a plastic film layer that easily absorbs laser light is formed by mixing or applying a substance that easily absorbs laser light, such as ink (pigment), carbon, and mica, to the plastic film layer that does not easily absorb laser light. May be.
Examples of the material constituting the plastic film layer that hardly absorbs laser light include polyolefin resins such as polyethylene and polypropylene, and these can be used alone or in combination of two or more. The plastic film constituting the laminated film is used as an unstretched film or a uniaxially or biaxially stretched film.
【０００７】上記のような層構成を有する積層フイルム
により包装袋を構成することによって、例えば図１にみ
られるように包装袋の片面から高出力のレーザ光を照射
することによって、レーザ光を吸収し易いプラスチック
フイルム層（外層２）には貫通孔５が形成される。照射
されたレーザ光は、さらに同じ面のレーザ光を吸収しに
くいプラスチックフイルム層（内層３）及び包装袋の反
対面のレーザ光を吸収しにくいプラスチックフイルム層
（内層３）を通過した後に、反対面のレーザ光を吸収し
易いプラスチックフイルム層（外層２）に貫通孔６を形
成する。貫通孔６は通常は貫通孔５よりも面積の小さい
孔となるが、これらの加工孔は完全に位置合わせされた
ものとなる。加工孔の形状には特に制限はなく、円、楕
円、長孔等任意の形状とすることができる。また、包装
袋の内層を構成するレーザ光を吸収しにくいプラスチッ
クフイルム層３、３は、殆んど加工されずに残されるの
で包装袋の密封性は損なわれず、内容物の保護性は低下
しない。By forming a packaging bag with a laminated film having the above-described layer structure, for example, as shown in FIG. 1, a high-output laser beam is irradiated from one side of the packaging bag to absorb the laser beam. A through hole 5 is formed in the plastic film layer (outer layer 2) which is easy to handle. The irradiated laser light further passes through a plastic film layer (inner layer 3) on the same surface that is less likely to absorb laser light and a plastic film layer (inner layer 3) on the opposite surface of the packaging bag that is less likely to absorb laser light. A through-hole 6 is formed in a plastic film layer (outer layer 2) on the surface that easily absorbs laser light. The through-hole 6 is usually a hole having a smaller area than the through-hole 5, but these processed holes are perfectly aligned. The shape of the processing hole is not particularly limited, and may be any shape such as a circle, an ellipse, and a long hole. In addition, the plastic film layers 3 and 3 that hardly absorb laser light, which constitute the inner layer of the packaging bag, are almost left unprocessed, so that the hermeticity of the packaging bag is not impaired and the protection of the contents does not decrease. .
【０００８】本発明の包装袋を構成する積層フイルムは
上記の２層からなるものに限定されず、これらのプラス
チックフイルム層のほかに他のプラスチックフイルム層
や金属箔、紙、セロファン等のシート材料層を含むもの
を使用することもできる。金属箔のようにレーザ光を反
射する材料を使用する場合には、そのような材料を層全
体を構成する材料としてではなく、易開封加工部を形成
する部分にはそのような材料が存在しない部分的な層構
成材料として使用することが好ましい。易開封加工部が
形成されるレーザ光を吸収し易いプラスチックフイルム
層は、包装袋の外層を構成する材料として使用すること
が開封性の点で好ましく、レーザ光を吸収しにくいプラ
スチックフイルム層は、包装袋の内層を構成する材料と
して使用することが密封性の点で好ましい。積層フイル
ムを構成するこれらのプラスチックフイルム層はそれぞ
れ１層に限定されるものではなく、２層以上使用する構
成とすることももちろん可能である。積層フイルムを構
成する各層間には、必要に応じてウレタン系、アクリル
系等のアンカー剤を介在させることができる。[0008] The laminated film constituting the packaging bag of the present invention is not limited to the above-mentioned two-layered film. In addition to these plastic film layers, other plastic film layers, sheet materials such as metal foil, paper, cellophane, etc. Those containing layers can also be used. When using a material that reflects laser light, such as a metal foil, such a material does not exist as a material constituting the entire layer, but does not exist in a portion forming the easily-opened portion. It is preferable to use it as a partial layer forming material. The plastic film layer in which the easy-opening portion is formed is easy to absorb the laser light, and it is preferable to use as a material constituting the outer layer of the packaging bag in terms of openability, and the plastic film layer that hardly absorbs the laser light is It is preferable to use as a material constituting the inner layer of the packaging bag from the viewpoint of sealing performance. Each of these plastic film layers constituting the laminated film is not limited to one layer, and it is a matter of course that two or more plastic film layers can be used. A urethane-based or acrylic-based anchor agent can be interposed between the layers constituting the laminated film, if necessary.
【０００９】包装袋を構成する好ましい積層フイルムの
例としては、外側から内側にかけての層構成で、二軸延
伸ナイロンフイルム（外層）／線状低密度ポリエチレン
（ＬＬＤＰＥ）フイルム（内層）、二軸延伸ポリエチレ
ンテレフタレート（ＰＥＴ）フイルム（外層）／ＬＬＤ
ＰＥフイルム（内層）、二軸延伸ポリエステルフイルム
／エチレンビニルアルコール共重合体フイルム／オレフ
ィン系樹脂フイルム、ＰＥＴフイルム／非晶質芳香族ポ
リアミドフイルム／ポリオレフィン系樹脂フイルム、二
軸延伸ナイロンフイルム／アルミ箔／オレフィン系樹脂
フイルム等であるがこれらの例に限定されない。Preferred examples of the laminated film constituting the packaging bag include a biaxially stretched nylon film (outer layer) / linear low-density polyethylene (LLDPE) film (inner layer) and a biaxially stretched layer structure from the outside to the inside. Polyethylene terephthalate (PET) film (outer layer) / LLD
PE film (inner layer), biaxially stretched polyester film / ethylene vinyl alcohol copolymer film / olefin resin film, PET film / amorphous aromatic polyamide film / polyolefin resin film, biaxially stretched nylon film / aluminum foil / Examples include olefin resin films, but are not limited to these examples.
【００１０】本発明では、包装袋の片面から高出力のレ
ーザ光を照射することによって包装袋の両面に易開封加
工部を同時に形成するものである。本発明で使用するレ
ーザの種類としては特に制限はなく、例えば炭酸ガスレ
ーザ、ＹＡＧレーザ、半導体レーザ、アルゴンイオンレ
ーザ等を使用することができるが、約５〜２０μｍの波
長を有するものが好ましく、なかでも炭酸ガスレーザが
特に好ましい。また、パルス発振タイプのレーザを使用
した場合には、レーザ光を吸収し易いプラスチックフイ
ルム層にミシン目状の易開封加工部を簡単に形成するこ
とができるので好ましい。In the present invention, an easy-opening portion is simultaneously formed on both sides of the packaging bag by irradiating high-power laser light from one side of the packaging bag. There is no particular limitation on the type of laser used in the present invention. For example, a carbon dioxide gas laser, a YAG laser, a semiconductor laser, an argon ion laser, or the like can be used, but a laser having a wavelength of about 5 to 20 μm is preferable. However, a carbon dioxide laser is particularly preferred. In addition, it is preferable to use a pulse oscillation type laser because a perforated easy-opening portion can be easily formed in a plastic film layer that easily absorbs laser light.
【００１１】レーザ装置としては、図２におけるレーザ
出力Ｐ0が２０Ｗ以上であり、パルス巾ｔsが２００μｓ
ｅｃ以下、好ましくは１６０μｓｅｃ以下のものが好ま
しい。レーザ光のパルス間隔ｔlや照射条件は、対象と
する包装袋を構成する積層フイルムの層構成や厚さに応
じて設定されるが、レーザ光を吸収し易いプラスチック
フイルム層に形成される加工孔が０．０５〜０．３０ｍ
ｍ間隔で１ｍｍに３個以上形成されるような条件とする
ことが好ましい。ここで加工孔の間隔とは、加工孔と加
工孔の間の距離を意味する。As a laser device, the laser output P 0 in FIG. 2 is 20 W or more, and the pulse width t s is 200 μs.
ec or less, preferably 160 μsec or less. The pulse interval t l of the laser light and the irradiation conditions are set according to the layer structure and thickness of the laminated film constituting the target packaging bag, but processing to form a plastic film layer that easily absorbs the laser light is performed. The hole is 0.05-0.30m
It is preferable that three or more pieces are formed in 1 mm at m intervals. Here, the interval between the processing holes means a distance between the processing holes.
【００１２】隣接する加工孔の間隔が０．０５ｍｍ未満
の場合には加工時に溶融して貫通したりして、包材の強
度が弱くなり包装袋の引き裂き強度、落下強度等が低下
し内容物の保護性に問題が生じる。一方、加工孔の間隔
が０．３０ｍｍより大きくなると開封時に大きな力を必
要とし開封の方向性も悪くなる。加工孔の間隔は、包装
袋の相対移動速度に応じてレーザ光の照射条件を制御す
ることによって、所望のものとすることができる。本発
明の包装袋では、開封を容易にするためにレーザによる
易開封加工部と組み合わせて、袋の端部にＶノッチ、Ｉ
ノッチ等のノッチ加工部を設ける等により、開封の手が
かりとなる加工部を形成してもよい。When the distance between adjacent processing holes is less than 0.05 mm, the processing material is melted and penetrated during processing, so that the strength of the packaging material is weakened, and the tear strength, drop strength, etc. of the packaging bag are reduced and the contents are reduced. Problem with the protection of On the other hand, when the interval between the processing holes is larger than 0.30 mm, a large force is required at the time of opening, and the directionality of the opening becomes poor. The interval between the processing holes can be set to a desired value by controlling the laser beam irradiation conditions according to the relative moving speed of the packaging bag. In the packaging bag of the present invention, a V-notch and an I-notch are provided at the end of the bag in combination with an easy-opening portion by laser to facilitate opening.
By providing a notched portion such as a notch, a processed portion serving as a clue for opening may be formed.
【００１３】[0013]
【実施例】つぎに、実施例により本発明をさらに詳細に
説明するが、これらの実施例は本発明を限定するもので
はない。 （実施例１）厚さ１５μｍの二軸延伸ナイロンフイルム
と厚さ１３０μｍのＬＬＤＰＥフイルムを、ウレタン系
のアンカー剤を介してラミネートした積層フイルムを使
用し、通常の製袋機によりＬＬＤＰＥフイルム層を内面
にしてパウチの底面及び両側面をヒートシールすること
により、図３に示す高さ２２ｃｍ、巾１３ｃｍの洗剤詰
替用パウチを製造した。このパウチの上端から１３ｍｍ
の位置にある開封予定線７に沿って、炭酸ガスレーザを
１２ｍ／ｍｉｎで走査し易開封加工部を設けた。この炭
酸ガスレーザの平均出力は５Ｗであり、ピーク出力は４
０Ｗであった。また、パルス巾ｔsは１３０μｓｅｃ、
パルス間隔ｔlは８７０μｓｅｃであり、１ｍｍの距離
にレーザ照射が５回行われた。このパウチの側端には、
易開封加工部の部分拡大図である図４にみられるよう
に、開封の手がかりとなるＶノッチ８が形成されてい
る。このパウチに液状洗剤を５００ｍｌ充填し密封後、
易開封加工部７に沿って手で引き裂いたところ、易開封
加工部７からはずれることなく簡単に引き裂くことがで
きた。また、液状洗剤を充填したパウチを、温度５℃で
１．２ｍの高さから水平落下及び側立落下を各１０回繰
り返し行ったが、パウチの破損や洗剤の漏洩は生じなか
った。EXAMPLES Next, the present invention will be described in more detail with reference to examples, but these examples do not limit the present invention. (Example 1) Using a laminated film obtained by laminating a biaxially stretched nylon film having a thickness of 15 μm and an LLDPE film having a thickness of 130 μm via a urethane-based anchor agent, the LLDPE film layer was formed on the inner surface by a normal bag making machine. The bottom and both sides of the pouch were heat-sealed to produce a detergent refill pouch having a height of 22 cm and a width of 13 cm shown in FIG. 13mm from the top of this pouch
A carbon dioxide gas laser was scanned at 12 m / min along the scheduled opening line 7 at the position of No. 3 to provide an easy opening processing portion. The average output of this carbon dioxide laser was 5 W, and the peak output was 4 W.
It was 0W. The pulse width t s is 130 μsec,
The pulse interval t 1 was 870 μsec, and laser irradiation was performed five times at a distance of 1 mm. On the side edge of this pouch,
As shown in FIG. 4 which is a partially enlarged view of the easy-opening portion, a V-notch 8 serving as a clue for opening is formed. After filling the pouch with 500 ml of liquid detergent and sealing,
When the sheet was torn by hand along the easily-opened portion 7, it could be easily torn without detaching from the easily-opened portion 7. Further, the pouch filled with the liquid detergent was repeatedly dropped horizontally and sideways 10 times from a height of 1.2 m at a temperature of 5 ° C. 10 times, but no damage to the pouch or leakage of the detergent occurred.
【００１４】（実施例２）炭酸ガスレーザの走査速度を
４０ｍ／ｍｉｎ、パルス巾ｔsを１３０μｓｅｃ、パル
ス間隔ｔlを１７０μｓｅｃ、レーザの平均出力を６０
Ｗ、ピーク出力を１４０Ｗとしたほかは、実施例１と同
様にして洗剤詰替用パウチを製造した。このパウチは実
施例１のパウチと同様に開封性、内容物の保護性に優れ
たものであった。(Embodiment 2) The scanning speed of the carbon dioxide gas laser is 40 m / min, the pulse width t s is 130 μsec, the pulse interval t l is 170 μsec, and the average output of the laser is 60.
A detergent refill pouch was manufactured in the same manner as in Example 1 except that the W and the peak output were set to 140 W. This pouch was excellent in the opening property and the protective property of the contents like the pouch of Example 1.
【００１５】（実施例３）炭酸ガスレーザの走査速度を
１２ｍ／ｍｉｎ、パルス幅ｔsを２１０μｓｅｃ、パル
ス間隔ｔlを８７０μｓｅｃとした他は、実施例１と同
様にして洗剤詰替用パウチを製造した。[0015] (Example 3) 210μsec scanning speed of the carbon dioxide laser to 12m / min, the pulse width t s, except that the 870μsec is the pulse interval t l, producing a pouch for replacement detergent packed in the same manner as in Example 1 did.
【００１６】（比較例１）炭酸ガスレーザの走査速度を
４０ｍ／ｍｉｎ、レーザ出力を７Ｗ（平均及びピークと
も同値）として連続照射する以外は、実施例１と同様に
して洗剤詰替用パウチを製造した。このパウチではレー
ザ光の出力が小さいために、照射側のフイルムにしか加
工されていなかった。(Comparative Example 1) A detergent refill pouch was manufactured in the same manner as in Example 1, except that the scanning speed of the carbon dioxide laser was 40 m / min and the laser output was 7 W (average and peak values were the same) and continuous irradiation was performed. did. In this pouch, the output of the laser beam was small, so that only the film on the irradiation side was processed.
【００１７】[0017]
【発明の効果】本発明は上記の構成をとることにより、
つぎのような顕著な効果を奏する。 １）包装袋の片面から短時間で高出力のレーザ光を照射
することにより、袋の両面に同時に易開封加工部が形成
されるので、位置ずれが生じず所定の方向に開封するこ
とができる。 ２）レーザ光の照射条件を制御することによって、微細
な易開封加工部の形成が可能となり、包装袋の開封性が
改善される。 ３）包装袋を構成する積層フイルムのレーザ光を吸収し
にくいプラスチックフイルム層は未加工の状態で残され
るので、包装袋の密封性は損なわれず、内容物の保護性
は低下しない。According to the present invention having the above-described structure,
The following remarkable effects are exhibited. 1) By irradiating a high-power laser beam from one side of the packaging bag in a short time, an easy-opening processing portion is formed on both sides of the bag at the same time, so that the packaging bag can be opened in a predetermined direction without displacement. . 2) By controlling the irradiation conditions of the laser beam, it is possible to form a fine easy-opening portion, and the opening property of the packaging bag is improved. 3) Since the plastic film layer of the laminated film constituting the packaging bag, which hardly absorbs the laser beam, is left unprocessed, the sealing property of the packaging bag is not impaired, and the protection of the contents does not deteriorate.
【図１】本発明の易開封性包装袋の断面構造の１例を示
す模式図である。FIG. 1 is a schematic view showing one example of a cross-sectional structure of an easily-openable packaging bag of the present invention.
【図２】本発明におけるレーザ出力発振パターンを示す
図である。FIG. 2 is a diagram showing a laser output oscillation pattern according to the present invention.
【図３】本発明の易開封性包装袋の１例を示す正面図で
ある。FIG. 3 is a front view showing an example of the easily-openable packaging bag of the present invention.
【図４】図３の包装袋の易開封加工部の部分拡大図であ
る。FIG. 4 is a partially enlarged view of an easy-open processing portion of the packaging bag of FIG. 3;
１ 易開封性包装袋 ２ レーザ光を吸収し易いプラスチックフイルム
層 ３ レーザ光を吸収しにくいプラスチックフイル
ム層 ５、６ 貫通孔 ７ 開封予定線 ８ ノッチDESCRIPTION OF SYMBOLS 1 Easy-open packaging bag 2 Plastic film layer which easily absorbs a laser beam 3 Plastic film layer which does not easily absorb a laser beam 5, 6 Through-hole 7 Expected opening line 8 Notch
Claims (9)
ルム層とレーザ光を吸収しにくいプラスチックフイルム
層を含む積層フイルムにより形成した包装袋において、
包装袋の開封予定部の両面に袋の片面からレーザ光を照
射して形成された積層フイルムを貫通しない易開封加工
部を有する易開封性包装袋。1. A packaging bag formed of a laminated film including a plastic film layer that easily absorbs laser light and a plastic film layer that hardly absorbs laser light,
An easy-open packaging bag having an easy-opening processing portion that does not penetrate a laminated film formed by irradiating laser light from one side of the bag on both sides of an opening scheduled portion of the packaging bag.
レーザ光を吸収し易いプラスチックフイルム層に０．０
５〜０．３０ｍｍ間隔で形成された加工孔であることを
特徴とする請求項１に記載の易開封性包装袋。2. An easy-opening portion is formed on a plastic film layer that easily absorbs a laser beam, which constitutes a laminated film, with a thickness of 0.0%.
The easy-open packaging bag according to claim 1, wherein the processing holes are formed at intervals of 5 to 0.30 mm.
の面積が包装袋の反対側の加工孔の面積よりも大きいこ
とを特徴とする請求項２に記載の易開封性包装袋。3. The easy-open packaging bag according to claim 2, wherein the area of the processing hole on the side of the packaging bag irradiated with the laser beam is larger than the area of the processing hole on the opposite side of the packaging bag.
ックフイルムを外層とし、レーザ光を吸収しにくいプラ
スチックフイルム層を内層として形成したものであるこ
とを特徴とする請求項１〜３のいずれか１項に記載の易
開封性包装袋。4. The packaging bag according to claim 1, wherein a plastic film that easily absorbs laser light is formed as an outer layer, and a plastic film layer that hardly absorbs laser light is formed as an inner layer. 2. The easily openable packaging bag according to claim 1.
ルム層とレーザ光を吸収しにくいプラスチックフイルム
層を含む積層フイルムにより形成した包装袋の片面から
高出力のレーザ光を照射することによって、包装袋の両
面に積層フイルムを貫通しない易開封加工部を形成する
ことを特徴とする易開封性包装袋の製造方法。5. A packaging bag formed by a laminated film including a plastic film layer that easily absorbs laser light and a plastic film layer that hardly absorbs laser light is irradiated with high-output laser light from one side of the packaging bag. A method for producing an easy-open packaging bag, comprising forming an easy-open processing portion on both sides that does not penetrate the laminated film.
タイプのレーザ光であることを特徴とする請求項５に記
載の易開封性包装袋の製造方法。6. The method for producing an easy-open packaging bag according to claim 5, wherein the laser light to be irradiated is a high-output pulse oscillation type laser light.
ルム層に易開封加工部として０．０５〜０．３０ｍｍ間
隔で加工孔が形成される条件下にレーザ光を照射するこ
とを特徴とする請求項５又は６に記載の易開封性包装袋
の製造方法。7. A laser beam is irradiated on a plastic film layer which easily absorbs a laser beam under the condition that processing holes are formed at 0.05 to 0.30 mm intervals as an easy-opening portion. 7. The method for producing an easy-open packaging bag according to 5 or 6.
であり、パルス幅が１００〜２００μｓｅｃであること
を特徴とする請求項５〜７のいずれか１項に記載の易開
封性包装袋の製造方法。8. A laser beam having a peak output of 20 to 200 W
The method for producing an easy-open packaging bag according to any one of claims 5 to 7, wherein the pulse width is 100 to 200 µsec.
ルム層を外層とし、レーザ光を吸収しにくいプラスチッ
クフイルム層を内層として包装袋を形成することを特徴
とする請求項５〜８のいずれか１項に記載の易開封性包
装袋の製造方法。9. The packaging bag according to claim 5, wherein a plastic film layer which easily absorbs laser light is used as an outer layer, and a plastic film layer which hardly absorbs laser light is used as an inner layer to form a packaging bag. 3. The method for producing an easily-openable packaging bag according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11587698A JP4081848B2 (en) | 1998-04-13 | 1998-04-13 | Manufacturing method of easy-open packaging bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11587698A JP4081848B2 (en) | 1998-04-13 | 1998-04-13 | Manufacturing method of easy-open packaging bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11292093A true JPH11292093A (en) | 1999-10-26 |
| JP4081848B2 JP4081848B2 (en) | 2008-04-30 |
Family
ID=14673360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11587698A Expired - Fee Related JP4081848B2 (en) | 1998-04-13 | 1998-04-13 | Manufacturing method of easy-open packaging bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4081848B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002337880A (en) * | 2001-05-18 | 2002-11-27 | Fuji Seal Inc | Plastic container with shrinkable label |
| JP2003040285A (en) * | 2001-08-01 | 2003-02-13 | Fujimori Kogyo Co Ltd | Method for forming easy unsealing means, and pouch with easily unsealing means |
| KR100799064B1 (en) | 2006-05-18 | 2008-01-29 | 율촌화학 주식회사 | Pouch having easy-tear pin hole part and method for producing the same |
| JP2008114871A (en) * | 2006-11-01 | 2008-05-22 | Nihon Tetra Pak Kk | Packaging paper container and container manufacturing apparatus |
| JP2012218799A (en) * | 2011-04-13 | 2012-11-12 | Howa Sangyo Kk | Method for manufacturing packaging material, packaging material, and package |
| US8686324B2 (en) | 2008-06-10 | 2014-04-01 | Pliant, Llc | Hermetic packages with laser scored vent systems |
| JP2018002217A (en) * | 2016-06-30 | 2018-01-11 | 凸版印刷株式会社 | Packaging bag and production method of packaging bag |
| JP2019177927A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | bag |
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1998
- 1998-04-13 JP JP11587698A patent/JP4081848B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002337880A (en) * | 2001-05-18 | 2002-11-27 | Fuji Seal Inc | Plastic container with shrinkable label |
| JP2003040285A (en) * | 2001-08-01 | 2003-02-13 | Fujimori Kogyo Co Ltd | Method for forming easy unsealing means, and pouch with easily unsealing means |
| KR100799064B1 (en) | 2006-05-18 | 2008-01-29 | 율촌화학 주식회사 | Pouch having easy-tear pin hole part and method for producing the same |
| JP2008114871A (en) * | 2006-11-01 | 2008-05-22 | Nihon Tetra Pak Kk | Packaging paper container and container manufacturing apparatus |
| US8686324B2 (en) | 2008-06-10 | 2014-04-01 | Pliant, Llc | Hermetic packages with laser scored vent systems |
| US9505543B2 (en) | 2008-06-10 | 2016-11-29 | Berry Plastics Corporation | Hermetic packages with laser scored vent systems |
| US10710788B2 (en) | 2008-06-10 | 2020-07-14 | Berry Plastics Corporation | Hermetic packages with laser scored vent systems |
| JP2012218799A (en) * | 2011-04-13 | 2012-11-12 | Howa Sangyo Kk | Method for manufacturing packaging material, packaging material, and package |
| JP2018002217A (en) * | 2016-06-30 | 2018-01-11 | 凸版印刷株式会社 | Packaging bag and production method of packaging bag |
| JP2019177927A (en) * | 2018-03-30 | 2019-10-17 | 大日本印刷株式会社 | bag |
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