JP2004168419A - Packaging bag with zipper - Google Patents

Packaging bag with zipper Download PDF

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JP2004168419A
JP2004168419A JP2003351422A JP2003351422A JP2004168419A JP 2004168419 A JP2004168419 A JP 2004168419A JP 2003351422 A JP2003351422 A JP 2003351422A JP 2003351422 A JP2003351422 A JP 2003351422A JP 2004168419 A JP2004168419 A JP 2004168419A
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zipper
resin
packaging bag
bag
tapes
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JP4293877B2 (en
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Yukihiko Shibata
幸彦 柴田
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Daiwa Gravure Co Ltd
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Daiwa Gravure Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To simply determine whether or not a packaging bag with a zipper has been opened. <P>SOLUTION: The packaging bag with a zipper is formed by joining the lower end of a male zipper tape 5 with the lower end of a female zipper tape 6 by heat-sealing on internal surfaces of respective front and rear sheets 3 and 4 at an opening end of the bag 1 located at the upper end when the bag 1 is standing. The zipper tapes 5 and 6 are joined so that they can be peeled at an interface at a position lower than engaging parts 10 with such heat-sealing strength that the tapes can be manually peeled. <P>COPYRIGHT: (C)2004,JPO

Description

本発明は、ジッパー付き包装袋に関するものである。   The present invention relates to a packaging bag with a zipper.

従来のこの種ジッパー付き包装袋としては例えば特許文献１などで知られているものがある。即ち、袋の開口端付近における対向位置に雌雄係合する開閉可能なジッパーを一体的に設けたものが古くから知られている。
実用新案登録第２５５７２５６号公報 As such a conventional packaging bag with a zipper, there is one known in, for example, Patent Document 1. That is, it has long been known that an openable zipper that engages with a male and female is integrally provided at a facing position near the opening end of the bag.
Utility Model Registration No. 2557256

上記の特許文献１に記載のような雌雄係合する開閉可能なジッパーを一体的に設けた包装袋にあって、スライダーを備えていないジッパー付き包装袋の場合は殆どの袋がジッパーが近くに存在する袋の開口端近傍の辺を含めて周辺がヒートシールにて閉じられており、袋の開口端近傍の辺のヒートシール部をカットしない限りジッパーを開いて袋を開けることができないが、中にはジッパーが近くに存在する袋の開口端近傍の辺がヒートシールされていないものもあり、その場合は店頭などでジッパーを開いて袋を簡単に開けることができ、開けられた後閉じられても開けられたかどうか判別できず、管理上問題がある。   In a packaging bag integrally provided with a zipper capable of opening and closing to engage with male and female as described in Patent Document 1, most of the bags are provided near the zipper in the case of a packaging bag with a zipper without a slider. The periphery including the side near the opening end of the existing bag is closed by heat sealing, and the bag cannot be opened by opening the zipper unless the heat sealing part near the opening end of the bag is cut, In some cases, the side near the open end of the bag where the zipper is near is not heat sealed, in which case the zipper can be opened at the store or the like and the bag can be easily opened, and closed after being opened Even if it is opened, it cannot be determined whether it can be opened and there is a management problem.

また、スライダーを備えているジッパー付き包装袋の場合は袋の開口端にジッパーが設けられ、このジッパーの長さ方向に沿ってスライダーが移動可能に設けられていることから、袋の開口端をヒートシールにて閉じることは不可能であり、このようなスライダーを備えているジッパー付き包装袋においても同様に管理上問題がある。   In the case of a packaging bag with a zipper having a slider, a zipper is provided at the open end of the bag, and the slider is provided so as to be movable along the length direction of the zipper. It is impossible to close by heat sealing, and there is also a management problem in a zipper-equipped packaging bag provided with such a slider.

本発明は、このような課題を解決するものであり、ジッパー付き包装袋において開けられたかどうか簡単に判別できるようにすることを目的とするものである。   The present invention has been made to solve such a problem, and an object of the present invention is to make it possible to easily determine whether or not a zipper-equipped packaging bag has been opened.

本発明の請求項１に記載のジッパー付き包装袋は、袋を立てた状態における上端に位置する袋の開口端において表側および裏側または裏側および表側の各シート部の内面に雄型のジッパーテープの下端部と雌型のジッパーテープの下端部を接合させてなるジッパー付き包装袋において、両ジッパーテープ間を噛み合い部よりも下側位置で手で剥離できる程度のヒートシール強度で界面剥離可能、あるいは層間剥離可能、あるいは凝集剥離可能に接合させてあることを特徴とする。   The packaging bag with a zipper according to claim 1 of the present invention has a male zipper tape on the inner surface of each of the front and back sides or the back and front sheet portions at the open end of the bag located at the upper end in the upright state. In a packaging bag with a zipper formed by joining a lower end portion and a lower end portion of a female zipper tape, interfacial separation is possible with heat seal strength enough to allow manual separation between the two zipper tapes at a position below the engagement portion, or It is characterized in that it is bonded so that it can be delaminated or cohesively peeled.

請求項２に記載のジッパー付き包装袋は、両ジッパーテープの何れか一方はホットメルト型接着樹脂により作られ、他方は袋の内層を形成する材料と同系のポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られていることを特徴とする。   In the packaging bag with a zipper according to claim 2, one of the two zipper tapes is made of a hot-melt type adhesive resin, and the other is made of a polyethylene resin or a polypropylene resin similar to the material forming the inner layer of the bag. It is characterized by having been done.

請求項３に記載のジッパー付き包装袋は、両ジッパーテープの何れか一方はホットメルト型接着樹脂により作られ、他方は外面、内面共に袋の内層を形成する材料と同系のポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られていることを特徴とする。   The packaging bag with a zipper according to claim 3, wherein one of the two zipper tapes is made of a hot-melt adhesive resin, and the other is a polyethylene resin or polypropylene of the same type as the material forming the inner layer of the bag on both the outer surface and the inner surface. It is characterized by being made of a system resin.

請求項４に記載のジッパー付き包装袋は、両ジッパーテープの何れか一方はホットメルト型接着樹脂により作られ、他方は外面が袋の内層を形成する材料と同系のポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られ、内面は袋の内層を形成する材料と異なるポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られていることを特徴とする。   The packaging bag with a zipper according to claim 4, wherein one of the zipper tapes is made of a hot-melt adhesive resin, and the other is a polyethylene-based resin or a polypropylene-based resin whose outer surface is similar to the material forming the inner layer of the bag. The inner surface is made of a polyethylene resin or a polypropylene resin different from the material forming the inner layer of the bag.

請求項５に記載のジッパー付き包装袋は、両ジッパーテープは内面がポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られ、両ジッパーテープの少なくとも噛み合い部よりも下側位置のヒートシールによる接合部位置において、一方のジッパーテープの内面にホットメルト型接着樹脂部分が設けられていることを特徴とする。   The packaging bag with a zipper according to claim 5, wherein the inner surfaces of both zipper tapes are made of a polyethylene resin or a polypropylene resin, and at a joint position by heat sealing at a position lower than at least the engagement portion of both zipper tapes, A hot melt type adhesive resin portion is provided on the inner surface of one zipper tape.

請求項６に記載のジッパー付き包装袋は、ポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られているジッパーテープの外面の少なくとも下端部には袋の内層に接合されるホットメルト型接着樹脂部分を設けるようにしたことを特徴とする。   The packaging bag with a zipper according to claim 6 is provided with a hot melt type adhesive resin portion to be joined to an inner layer of the bag at least at a lower end portion of an outer surface of a zipper tape made of a polyethylene resin or a polypropylene resin. It is characterized in that.

請求項７に記載のジッパー付き包装袋は、両ジッパーテープは直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂をランダムに配合した材料を含む樹脂を用いて作られていることを特徴とする。   The packaging bag with a zipper according to claim 7 is characterized in that both zipper tapes are made of a resin containing a material in which a linear low-density polyethylene resin and a polybutene-1 resin are randomly mixed.

請求項８に記載のジッパー付き包装袋は、両ジッパーテープの少なくとも噛み合い部よりも下側位置のヒートシールによる接合部位置において、両ジッパーテープの内面に直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂をランダムに配合した材料を含む樹脂部分を備えていることを特徴とする。   The packaging bag with a zipper according to claim 8, wherein the linear zipper tape has a linear low-density polyethylene resin and polybutene-1 on the inner surfaces of both zipper tapes at least at a joint portion of the zipper tapes at a position below the engagement portion by heat sealing. It is characterized by having a resin portion containing a material in which a resin is randomly blended.

請求項９に記載のジッパー付き包装袋は、雄型のジッパーテープ側と雌型のジッパーテープ側はそれぞれ互いに異なる色で着色されていることを特徴とする。   The packaging bag with a zipper according to the ninth aspect is characterized in that the male zipper tape side and the female zipper tape side are colored with mutually different colors.

以上のように、本発明のジッパー付き包装袋は、両ジッパーテープ間を噛み合い部よりも下側位置で手で剥離できる程度のヒートシール強度で互いに接合させてあることにより、例えば客が誤ってジッパーを開き両ジッパーテープの接合部を剥離させた場合、包装袋が開けられたことを確認することができる。特に、雄型のジッパーテープ側と雌型のジッパーテープ側をそれぞれ互いに異なる色で着色しておくことにより両ジッパーテープの接合部は色合成により別の色に変化しており、例えば客が誤ってジッパーを開き両ジッパーテープの接合部を剥離させた場合、接合部の色が各ジッパーテープ側の元の色に戻り、包装袋が開けられたことが判別しやすくなる。   As described above, the zipper-equipped packaging bag of the present invention has the two zipper tapes joined to each other with a heat seal strength enough to be peelable by hand at a position lower than the engagement portion, so that, for example, a customer accidentally When the zipper is opened and the joint between both zipper tapes is peeled off, it can be confirmed that the packaging bag has been opened. In particular, by coloring the male zipper tape side and the female zipper tape side with different colors, the joint of both zipper tapes has changed to a different color due to color synthesis. When the zipper is opened and the joint portion of both zipper tapes is peeled off, the color of the joint portion returns to the original color on each zipper tape side, and it is easy to determine that the packaging bag has been opened.

以下、本発明の実施の形態を、図面に基づいて説明する。
先ず、図１〜図３に示す第１の実施の形態について説明すると、１は包装袋で、この包装袋１は立てた状態における下端および両側の３つの辺がヒートシールにて閉じられる。２はそのヒートシール部である。そして、この包装袋１を立てた状態における上端に位置する開口端において袋１の表側および裏側（または裏側および表側）の各シート部３，４の内面に雄型のジッパーテープ５の下端部と雌型のジッパーテープ６の下端部をヒートシールにて接合させることによりジッパーテープ５，６を一体的に設けている。即ち、ジッパーテープ５および６が包装袋１の上端から突出するように設けられている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a first embodiment shown in FIGS. 1 to 3 will be described. Reference numeral 1 denotes a packaging bag. The packaging bag 1 is closed at the lower end and three sides on both sides in a standing state by heat sealing. Reference numeral 2 denotes the heat seal portion. At the open end located at the upper end of the packaging bag 1 in the upright state, the lower end of the male zipper tape 5 is attached to the inner surfaces of the sheet portions 3 and 4 on the front side and the back side (or the back side and the front side) of the bag 1. Zipper tapes 5 and 6 are provided integrally by joining the lower ends of female zipper tapes 6 by heat sealing. That is, the zipper tapes 5 and 6 are provided so as to protrude from the upper end of the packaging bag 1.

前記包装袋１を構成するシート部３，４は外層３ａ，４ａがナイロンフィルム、内層３ｂ，４ｂがポリエチレンフィルムからなる２層構造であり、この包装袋１の開口端における各シート部３，４の内面に接合される雄型のジッパーテープ５と雌型のジッパーテープ６は次に述べるような材料で作られている。   The sheet portions 3 and 4 constituting the packaging bag 1 have a two-layer structure in which the outer layers 3a and 4a are made of a nylon film and the inner layers 3b and 4b are made of a polyethylene film. The male zipper tape 5 and the female zipper tape 6 to be bonded to the inner surface are made of the following materials.

例えば、雄型のジッパーテープ５の材料をＡ、雌型のジッパーテープ６の材料をＢとしたとき、Ａはホットメルト型接着樹脂、Ｂはポリプロピレン系樹脂であり、前記各シート部３，４の内層３ｂ，４ｂに対向する雄型のジッパーテープ５の材料であるＡおよび雌型のジッパーテープ６の材料であるＢの面にはそれぞれ共押し出しによりポリエチレン系樹脂層７およびホットメルト型接着樹脂層８が形成されている。そして、雄型のジッパーテープ５をシート部３の内面に、雌型のジッパーテープ６をシート部４の内面にそれぞれ例えば１８０度の温度で、シール時間一秒、シール圧２０Ｎ／ｃｍ２ で接合させたとき、ジッパーテープ５のポリエチレン系樹脂層７とシート部３のポリエチレンフィルムの内層３ｂとが互いに融着し、ジッパーテープ６のホットメルト型接着樹脂層８はシート部４のポリエチレンフィルムの内層４ｂに融着する。このとき、ジッパーテープ５のポリエチレン系樹脂層７とシート部３の内層３ｂのポリエチレンフィルムは同種であるので完全に融着し、ジッパーテープ６のホットメルト型接着樹脂層８とシート部４の内層４ｂのポリエチレンフィルムが５Ｎ／１５ｍｍ程度のヒートシール強度で接合する。即ち、ホットメルト型接着樹脂は加熱されることによりポリエチレンなどのポリオレフィン系の樹脂に対して接着する性質を有し、ポリオレフィン系の樹脂に対するヒートシール強度は５Ｎ／１５ｍｍ程度であることが実験により判明している。 For example, when the material of the male zipper tape 5 is A and the material of the female zipper tape 6 is B, A is a hot melt adhesive resin, B is a polypropylene resin, A surface which is a material of the male zipper tape 5 and a surface B which is a material of the female zipper tape 6 facing the inner layers 3b and 4b are coextruded with a polyethylene resin layer 7 and a hot melt type adhesive resin, respectively. Layer 8 is formed. Then, the male zipper tape 5 is bonded to the inner surface of the sheet portion 3 and the female zipper tape 6 is bonded to the inner surface of the sheet portion 4 at a temperature of, for example, 180 ° C., at a sealing time of 1 second and a sealing pressure of 20 N / cm 2 . When this is done, the polyethylene resin layer 7 of the zipper tape 5 and the inner layer 3b of the polyethylene film of the sheet portion 3 are fused together, and the hot melt type adhesive resin layer 8 of the zipper tape 6 becomes the inner layer of the polyethylene film of the sheet portion 4. 4b. At this time, since the polyethylene resin layer 7 of the zipper tape 5 and the polyethylene film of the inner layer 3b of the sheet portion 3 are of the same kind, they are completely fused, and the hot melt type adhesive resin layer 8 of the zipper tape 6 and the inner layer of the sheet portion 4 are formed. The polyethylene film of 4b is joined with a heat seal strength of about 5 N / 15 mm. That is, the hot melt type adhesive resin has a property to adhere to a polyolefin resin such as polyethylene when heated, and the heat seal strength against the polyolefin resin is about 5 N / 15 mm, which has been experimentally found. are doing.

また、本実施の形態のジッパー付き包装袋１は包装袋１を立てた状態におけるジッパー配設位置における下端部（幅方向一端部）で両ジッパーテープ５，６間をヒートシールにて界面剥離可能に接合している。９はこの両ジッパーテープ５，６間の接合部である。このジッパーテープ５の材料はホットメルト型接着樹脂、ジッパーテープ６の材料はポリプロピレン系樹脂であるので、ヒートシール強度は前述の５Ｎ／１５ｍｍ程度である。この５Ｎ／１５ｍｍ程度のヒートシール強度は手で簡単に剥離できる程度である。ところで、本実施の形態ではジッパーテープ５の材料であるホットメルト型接着樹脂に青色の着色剤が含有され、またジッパーテープ６の材料であるポリプロピレン系樹脂に黄色の着色剤が含有されており、両ジッパーテープ５，６間をヒートシールにて接合した状態において、接合部の色は色合成により緑となるように構成されている。また、ジッパーテープ５，６を共に透明材料で作り、その外側に設けられるポリエチレン系樹脂層７およびホットメルト型接着樹脂層８にそれぞれ青色および黄色の着色剤で着色を施しておくことにより、両ジッパーテープ５，６間をヒートシールにて接合したとき上記と同様に接合部の色は色合成により緑とすることができる。   Further, in the packaging bag 1 with a zipper of the present embodiment, the interface between the zipper tapes 5 and 6 can be peeled off by heat sealing at the lower end (one end in the width direction) at the zipper disposition position in a state where the packaging bag 1 is upright. Is joined to. Reference numeral 9 denotes a joint between the zipper tapes 5 and 6. Since the material of the zipper tape 5 is a hot-melt adhesive resin and the material of the zipper tape 6 is a polypropylene resin, the heat seal strength is about 5 N / 15 mm described above. The heat sealing strength of about 5 N / 15 mm is such that it can be easily peeled off by hand. By the way, in this embodiment, the hot-melt type adhesive resin as the material of the zipper tape 5 contains a blue colorant, and the polypropylene resin as the material of the zipper tape 6 contains a yellow colorant. In a state where the two zipper tapes 5 and 6 are joined by heat sealing, the color of the joining portion is configured to be green by color synthesis. Further, both the zipper tapes 5 and 6 are made of a transparent material, and the polyethylene resin layer 7 and the hot melt type adhesive resin layer 8 provided outside thereof are colored with blue and yellow coloring agents, respectively, so that When the zipper tapes 5 and 6 are joined by heat sealing, the color of the joint can be made green by color synthesis in the same manner as described above.

なお、雄型のジッパーテープ５と雌型のジッパーテープ６の噛み合い部１０に熱を掛けると変形してしまうので、噛み合い部１０よりも下側でシート部３，４の内面に重なる両ジッパーテープ５，６の下端部のみをヒートシールにて接合させている。図中、１１はジッパーテープ５，６間を開閉するスライダーである。   Heat is applied to the engaging portion 10 of the male zipper tape 5 and the female zipper tape 6, so that the zipper tape is deformed. Therefore, the two zipper tapes that overlap the inner surfaces of the sheet portions 3 and 4 below the engaging portion 10. Only the lower ends of 5, 6 are joined by heat sealing. In the figure, reference numeral 11 denotes a slider for opening and closing the space between the zipper tapes 5 and 6.

ところで、前記ホットメルト型接着樹脂としては種々のものが知られているが、本実施の形態では両ジッパーテープ５，６間を界面剥離可能に接合するのに適した樹脂として、例えばヒロダイン（株）製のエチレン・酢酸ビニル共重合体を主成分とするエチレン・エチルアクリレート共重合体と石油樹脂、テレピン樹脂およびロジン系樹脂からなる群から選ばれた少なくとも一種の樹脂からなる樹脂組成物で形成されたものが用いられる。   By the way, various types of hot-melt adhesive resins are known. In the present embodiment, for example, Hirodine Co., Ltd. Formed by an ethylene / ethyl acrylate copolymer containing ethylene / vinyl acetate copolymer as a main component and at least one resin selected from the group consisting of petroleum resin, turpentine resin and rosin resin. What was done is used.

また、上記した実施の形態では雄型のジッパーテープ５の材料をホットメルト型接着樹脂、雌型のジッパーテープ６の材料をポリプロピレン系の樹脂としているが、逆であっても良い。その場合、雄型のジッパーテープ５の外面にホットメルト型接着樹脂層、雌型のジッパーテープ６の外面にポリエチレン系樹脂層を形成する。   In the above-described embodiment, the material of the male zipper tape 5 is a hot-melt type adhesive resin, and the material of the female zipper tape 6 is a polypropylene-based resin. In this case, a hot-melt adhesive resin layer is formed on the outer surface of the male zipper tape 5, and a polyethylene resin layer is formed on the outer surface of the female zipper tape 6.

また、包装袋１の形としては上記した実施の形態以外に、ガゼットタイプ、合掌タイプ、スタンドパックタイプなどであっても良い。
さらに、上記した実施の形態ではジッパーにはスライダーが設けられているが、スライダーなしのジッパーにも実施できることは言うまでもない。 In addition to the above embodiment, the shape of the packaging bag 1 may be a gusset type, a joint type, a stand pack type, or the like.
Furthermore, in the above-described embodiment, the slider is provided on the zipper, but it goes without saying that the present invention can be applied to a zipper without a slider.

以上述べたように、本実施の形態では包装袋１のシート部３，４との接合部の高さ位置における両ジッパーテープ５，６の下端部間を手で簡単に剥離できる程度のヒートシール強度で接合した状態で商品（内容物が入っている袋）が店頭に並べられることになり、客が誤ってジッパーを開き両ジッパーテープ５，６の接合部９を剥離させた場合、接合部９の色（緑）が各ジッパーテープ５，６の色（青、黄）もしくはジッパーテープ５，６を透明とした場合その外側に設けられるポリエチレン系樹脂層７およびホットメルト型接着樹脂層８の色に戻り、包装袋１が開けられたことを確認することができる。   As described above, in the present embodiment, the heat sealing is such that the lower end portions of the zipper tapes 5 and 6 at the height position of the joint portion between the packaging bag 1 and the sheet portions 3 and 4 can be easily peeled off by hand. If the products (bags containing the contents) are lined up at the store in a state where they are joined with strength, and the customer accidentally opens the zipper and peels off the joints 9 of both zipper tapes 5, 6, the joints When the color 9 (green) is the color (blue, yellow) of each of the zipper tapes 5 and 6 or when the zipper tapes 5 and 6 are transparent, the polyethylene resin layer 7 and the hot melt type adhesive resin layer 8 provided outside the zipper tapes 5 and 6 Returning to the color, it can be confirmed that the packaging bag 1 has been opened.

なお、上記のように両ジッパーテープ５，６の下端部間は手で簡単に剥離できる程度のヒートシール強度で接合してあり、消費者が商品を買って袋１から内容物を取り出すときはジッパーを開き両ジッパーテープ５，６の接合部９を剥離させることにより包装袋１から内容物を取り出すことができる。このとき、前記ジッパーテープ５，６間の接合部９のヒートシール強度と、前記ポリプロピレン系樹脂で作られ表面にホットメルト型接着樹脂層８が設けられている雌型のジッパーテープ６と包装袋１の内面とのヒートシール強度は同程度であるが、接合部９がジッパー配設位置における下端部に位置しているので、接合部９間を指で剥離させる際に雌型のジッパーテープ６と包装袋１との間の剥離は生じにくくなる。   As described above, the lower end portions of both zipper tapes 5 and 6 are joined with a heat seal strength that can be easily peeled off by hand, and when a consumer buys a product and takes out the contents from the bag 1, The contents can be taken out of the packaging bag 1 by opening the zipper and peeling the joint 9 between the zipper tapes 5 and 6. At this time, the heat sealing strength of the joint 9 between the zipper tapes 5 and 6 and the female zipper tape 6 made of the polypropylene resin and provided with a hot-melt type adhesive resin layer 8 on its surface and the packaging bag. Although the heat sealing strength with the inner surface of the zipper tape 1 is almost the same, since the joint 9 is located at the lower end in the zipper arrangement position, the female zipper tape 6 is used to separate the joint 9 with a finger. Peeling between the packaging bag 1 and the packaging bag 1 is less likely to occur.

ところで、本実施の形態ではジッパーテープ５を青色に、ジッパーテープ６を黄色に着色し、ヒートシールされた接合部が緑となるように構成されているが、他の色の組み合わせであっても良い。この両ジッパーテープ５，６の着色は必ずしも施さなくても良く、両ジッパーテープ５，６の接合部９を剥離させた場合、包装袋１が開けられたことを容易に確認することができる。   In the present embodiment, the zipper tape 5 is colored blue and the zipper tape 6 is colored yellow, and the heat-sealed joint is configured to be green. good. The coloring of the zipper tapes 5 and 6 does not necessarily have to be performed. When the joint 9 of the zipper tapes 5 and 6 is peeled, it can be easily confirmed that the packaging bag 1 has been opened.

また、上記実施の形態では前記両ジッパーテープ５，６の噛み合い部１０よりも下側位置で両ジッパーテープ５，６間を手で剥離できる程度のヒートシール強度で界面剥離可能に接合させているが、層間剥離可能、あるいは凝集剥離可能に接合させてあっても良い。例えば、この凝集剥離用に使用されるホットメルト型接着樹脂として、三菱化学（株）製のＶＭＸ（登録商標）で知られるポリオレフィンを主成分とし、ラジカル重合性モノマーでグラフト変性されたポリオレフィン樹脂に非晶性ビニルポリマーを均質に含有する多成分系ポリマーと、分散相をポリオレフィンにスチレンを分散したものをポリマーアロイした樹脂が適している。   In the above-described embodiment, the zipper tapes 5 and 6 are joined at a position below the engagement portion 10 so that the zipper tapes 5 and 6 can be peeled off at an interface with a heat seal strength that can be peeled off by hand. However, they may be bonded so that they can be separated from each other or cohesively separated. For example, as a hot-melt adhesive resin used for this cohesive peeling, a polyolefin resin known as VMX (registered trademark) manufactured by Mitsubishi Chemical Corporation as a main component and graft-modified with a radical polymerizable monomer is used. A multi-component polymer containing an amorphous vinyl polymer homogeneously, and a resin obtained by polymer-alloying a dispersion of styrene in polyolefin are suitable.

また、上記実施の形態では包装袋１は外層３ａ，４ａがナイロンフィルム、内層３ｂ，４ｂがポリエチレンフィルムからなる２層構造のシート部３，４によって作られた合成樹脂製のものであるが、その材料は特に限定されるものではない。つまり、包装袋１の材料は少なくとも内層がヒートシールの必要性からポリエチレンフィルムやポリプロピレンフィルムなどの合成樹脂フィルムで作られたものであれば、その内層の外側に積層される材料は合成樹脂以外のもの、例えばアルミ箔、紙、レーヨン紙などでも良い。   In the above embodiment, the packaging bag 1 is made of a synthetic resin in which the outer layers 3a and 4a are made of a nylon film and the inner layers 3b and 4b are made of a two-layered sheet portion 3 and 4 made of a polyethylene film. The material is not particularly limited. In other words, as long as at least the inner layer of the packaging bag 1 is made of a synthetic resin film such as a polyethylene film or a polypropylene film due to the necessity of heat sealing, the material laminated on the outer side of the inner layer is other than the synthetic resin. A material such as aluminum foil, paper, rayon paper or the like may be used.

また、上記実施の形態ではホットメルト型接着樹脂からなる雄型のジッパーテープ５およびポリプロピレン系樹脂からなる雌型のジッパーテープ６において、前記各シート部３，４の内層３ｂ，４ｂに対向する面にそれぞれポリエチレン系樹脂層７およびホットメルト型接着樹脂層８が形成されているが、ポリプロピレン系樹脂からなる雌型のジッパーテープ６側に設けられるホットメルト型接着樹脂層８は必要であるのに対し、ホットメルト型接着樹脂からなる雄型のジッパーテープ５側に設けられるポリエチレン系樹脂層７は特に設けなくても良い。また、雄型もしくは雌型の一方のジッパーテープをホットメルト型接着樹脂で構成し、他方のジッパーテープをポリエチレン系樹脂で構成することも可能で、その場合、ポリエチレン系樹脂からなる他方のジッパーテープとシート部３の内層３ｂのポリエチレンフィルムは同種であるので完全に融着し、ホットメルト型接着樹脂からなる一方のジッパーテープとシート部４の内層４ｂのポリエチレンフィルムは前記実施の形態と同様に５Ｎ／１５ｍｍ程度のヒートシール強度で接合する。また、両ジッパーテープ間のヒートシール強度も５Ｎ／１５ｍｍ程度で、両者間は前記実施の形態と同様に界面剥離可能、あるいは層間剥離可能、あるいは凝集剥離可能に接合される。また、一方のジッパーテープをホットメルト型接着樹脂で構成し、他方のジッパーテープの外面をポリエチレン系樹脂で構成するとともに内面を包装袋１の内層を形成する材料と異なるポリプロピレン系樹脂により構成することも可能である。   In the above embodiment, the surface of the male zipper tape 5 made of a hot-melt type adhesive resin and the female zipper tape 6 made of a polypropylene-based resin are opposed to the inner layers 3b, 4b of the sheet portions 3, 4. A polyethylene resin layer 7 and a hot-melt type adhesive resin layer 8 are formed respectively. However, the hot-melt type adhesive resin layer 8 provided on the female zipper tape 6 side made of a polypropylene-based resin is necessary. On the other hand, the polyethylene resin layer 7 provided on the side of the male zipper tape 5 made of hot-melt adhesive resin may not be particularly provided. Alternatively, one of the male or female zipper tapes may be made of a hot-melt adhesive resin, and the other zipper tape may be made of a polyethylene resin, in which case the other zipper tape made of a polyethylene resin Since the polyethylene film of the inner layer 3b of the sheet portion 3 is of the same kind, it is completely fused, and one zipper tape made of a hot-melt type adhesive resin and the polyethylene film of the inner layer 4b of the sheet portion 4 are the same as in the above embodiment. Join with a heat seal strength of about 5 N / 15 mm. The heat sealing strength between the two zipper tapes is about 5 N / 15 mm, and the two zipper tapes are joined so as to be capable of interfacial peeling, interlayer peeling, or cohesive peeling as in the above embodiment. Further, one zipper tape is made of a hot-melt type adhesive resin, and the outer surface of the other zipper tape is made of a polyethylene resin, and the inner surface is made of a polypropylene resin different from the material forming the inner layer of the packaging bag 1. Is also possible.

さらに、上記実施の形態では両ジッパーテープ５，６を包装袋１の各シート部３，４の内面にヒートシールにて接合させているが、溶融押し出しされた直後の溶融状態の両ジッパーテープ５，６をシート状態の包装袋１の各シート部３，４の内面に重ねて接合させることによっても両ジッパーテープ５，６を包装袋１の各シート部３，４の内面に装着させることができる。   Further, in the above embodiment, the two zipper tapes 5 and 6 are bonded to the inner surfaces of the respective sheet portions 3 and 4 of the packaging bag 1 by heat sealing. The zipper tapes 5 and 6 can be attached to the inner surfaces of the respective sheet portions 3 and 4 of the packaging bag 1 also by overlapping and joining the inner surfaces of the respective sheet portions 3 and 4 of the packaging bag 1 in the sheet state. it can.

次に、図４に示す第２の実施の形態について説明すると、この第２の実施の形態は前記図１〜図３に示す第１の実施の形態の変形例であって、前記第１の実施の形態の雄型のジッパーテープ５ならびに雌型のジッパーテープ６の外面側に設けられるホットメルト型接着樹脂層８は全体がホットメルト型接着樹脂で作られているが、第２の実施の形態では雄型のジッパーテープ５を包装袋１の内層３ｂと同系のポリエチレン系樹脂で作るとともに、雌型のジッパーテープ６をポリプロピレン系樹脂で作り、両ジッパーテープ５，６の接合部９付近のみにおいて雄型のジッパーテープ５の内面側にホットメルト型接着樹脂からなる部分１２を設け、雌型のジッパーテープ６の下端部外面側に包装袋１の内層４ｂに接合されるホットメルト型接着樹脂からなる部分１３を設けている。なお、ホットメルト型接着樹脂からなる部分１３の代わりに包装袋１の内層４ｂと同系のポリエチレン系樹脂からなる部分を設けるようにしても良い。このように両ジッパーテープ５，６に噛み合い部１０よりも下側位置で最小必要部分にホットメルト型接着樹脂部分を設けるようにしても前記第１の実施の形態と同様の効果が得られる。この実施の形態において雄型のジッパーテープ５がホットメルト型接着樹脂で作られている場合はホットメルト型接着樹脂からなる部分１２は不要である。   Next, a second embodiment shown in FIG. 4 will be described. The second embodiment is a modification of the first embodiment shown in FIGS. The hot-melt adhesive resin layer 8 provided on the outer surface side of the male zipper tape 5 and the female zipper tape 6 according to the embodiment is entirely made of the hot-melt adhesive resin. In the embodiment, the male zipper tape 5 is made of the same polyethylene resin as the inner layer 3b of the packaging bag 1, and the female zipper tape 6 is made of the polypropylene resin. Only the vicinity of the joint 9 between the two zipper tapes 5 and 6 is formed. In this embodiment, a portion 12 made of a hot-melt adhesive resin is provided on the inner surface side of the male zipper tape 5, and a hot-melt adhesive tree joined to the inner layer 4 b of the packaging bag 1 on the outer surface of the lower end portion of the female zipper tape 6. It is provided with a portion 13 made. Note that, instead of the portion 13 made of the hot-melt adhesive resin, a portion made of the same polyethylene resin as the inner layer 4b of the packaging bag 1 may be provided. As described above, the same effect as that of the first embodiment can be obtained by providing the hot-melt type adhesive resin portion at the minimum necessary portion below the engagement portion 10 between the zipper tapes 5 and 6. In this embodiment, when the male zipper tape 5 is made of a hot-melt adhesive resin, the portion 12 made of the hot-melt adhesive resin is unnecessary.

次に、図５に示す第３の実施の形態について説明すると、この第３の実施の形態は雄型のジッパーテープ５ならびに雌型のジッパーテープ６共に包装袋１の内層３ｂ，４ｂと同系のポリエチレン系樹脂で作り、両ジッパーテープ５，６の接合部９付近のみにおいて雌型のジッパーテープ６の内面側にホットメルト型接着樹脂からなる部分１４を設けている。   Next, a third embodiment shown in FIG. 5 will be described. In the third embodiment, both the male zipper tape 5 and the female zipper tape 6 are similar to the inner layers 3b, 4b of the packaging bag 1. A portion 14 made of a hot-melt adhesive resin is provided on the inner surface side of the female zipper tape 6 only in the vicinity of the joint 9 between the zipper tapes 5 and 6.

また、両ジッパーテープ５，６間を噛み合い部１０よりも下側位置で手で剥離できる程度のヒートシール強度で簡単に剥離可能に接合させる手段として、両ジッパーテープ５，６共に例えば直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂をランダムに配合した材料を含む樹脂を用いて形成することによっても、この材料で作られたジッパーテープ５，６の下端部の接合部９間が完全結合されておらず、両ジッパーテープ５，６の接合部９間を手で簡単に凝集剥離させることができる。   As means for joining the two zipper tapes 5 and 6 easily and detachably at a position below the engagement portion 10 with a heat seal strength that can be peeled off by hand, for example, both the zipper tapes 5 and 6 are linear, for example. By using a resin containing a material in which low-density polyethylene resin and polybutene-1 resin are randomly blended, the joining portions 9 at the lower end portions of the zipper tapes 5 and 6 made of this material are completely bonded. Therefore, the joint portions 9 of the zipper tapes 5 and 6 can be easily coagulated and separated by hand.

また、図６に示す第４の実施の形態について説明すると、この第４の実施の形態は両ジッパーテープ５，６共に包装袋１の内層３ｂ，４ｂと同系のポリエチレン系樹脂で作り、両ジッパーテープ５，６の少なくとも噛み合い部１０よりも下側位置の接合部９付近において両ジッパーテープ５，６の内面側に直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂をランダムに配合した材料を含む樹脂部分１５，１６を設けている。これによってもジッパーテープ５，６の下端部の接合部９間が完全結合されておらず、両ジッパーテープ５，６の接合部９間を手で簡単に凝集剥離させることができる。   The fourth embodiment shown in FIG. 6 will be described. In the fourth embodiment, both the zipper tapes 5 and 6 are made of the same polyethylene resin as the inner layers 3b and 4b of the packaging bag 1, and the two zippers are used. At least in the vicinity of the joining portion 9 at a position lower than the engagement portion 10 of the tapes 5 and 6, a material in which a linear low-density polyethylene resin and a polybutene-1 resin are randomly blended on the inner surface side of both zipper tapes 5 and 6 is included. Resin portions 15 and 16 are provided. Also according to this, the joint portions 9 at the lower end portions of the zipper tapes 5 and 6 are not completely joined, and the joint portions 9 of the zipper tapes 5 and 6 can be easily coagulated and separated by hand.

ところで、図面に示す実施の形態において両ジッパーテープ５，６を３層以上構造とすることができる。つまり、ジッパーテープ５，６の内面と外面との間にポリエチレン系樹脂やポリプロピレン系樹脂、ホットメルト型接着樹脂、直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂をランダムに配合した材料を含む樹脂以外の材料が接着性樹脂を用いて介在されていても良い。   By the way, in the embodiment shown in the drawings, both zipper tapes 5, 6 can have a structure of three or more layers. In other words, a resin containing a material in which a polyethylene resin, a polypropylene resin, a hot melt type adhesive resin, a linear low density polyethylene resin and a polybutene-1 resin are randomly blended between the inner surface and the outer surface of the zipper tapes 5, 6 Other materials may be interposed using an adhesive resin.

さらに、上記した説明では両ジッパーテープ５，６の接合部９間は５Ｎ／１５ｍｍ程度のヒートシール強度で接合しているが、そのヒートシール強度は１Ｎ／１５ｍｍ以上であれば良い。   Furthermore, in the above description, the joint portions 9 of the zipper tapes 5 and 6 are joined with a heat seal strength of about 5 N / 15 mm, but the heat seal strength may be 1 N / 15 mm or more.

本発明の第１の実施の形態におけるジッパー付き包装袋の斜視図である。It is a perspective view of a packaging bag with a zipper in a 1st embodiment of the present invention. 同ジッパー付き包装袋の要部拡大断面図である。It is a principal part expanded sectional view of the packaging bag with a zipper. 同ジッパー付き包装袋を開けるときの状態を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the state at the time of opening the packaging bag with a zipper. 本発明の第２の実施の形態におけるジッパー付き包装袋を開けるときの状態を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the state at the time of opening the packaging bag with a zipper in 2nd Embodiment of this invention. 本発明の第３の実施の形態におけるジッパー付き包装袋を開けるときの状態を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the state at the time of opening the packaging bag with a zipper in 3rd Embodiment of this invention. 本発明の第４の実施の形態におけるジッパー付き包装袋を開けるときの状態を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the state at the time of opening the packaging bag with a zipper in the 4th Embodiment of this invention.

符号の説明Explanation of reference numerals

１ 包装袋
２ ヒートシール部
３，４ シート部
３ａ，４ａ 外層
３ｂ，４ｂ 内層
５ 雄型のジッパーテープ
６ 雌型のジッパーテープ
７ ポリエチレン系樹脂層
８ ホットメルト型接着樹脂層
９ 接合部
１０ 噛み合い部
１１ スライダー
１２ ホットメルト型接着樹脂からなる部分
１３ ホットメルト型接着樹脂からなる部分
１４ ホットメルト型接着樹脂からなる部分
１５ 直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂を含む樹脂部分
１６ 直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂を含む樹脂部分 DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Heat seal part 3, 4 Sheet part 3a, 4a Outer layer 3b, 4b Inner layer 5 Male zipper tape 6 Female zipper tape 7 Polyethylene resin layer 8 Hot melt type adhesive resin layer 9 Joining part 10 Meshing part REFERENCE SIGNS LIST 11 slider 12 part made of hot melt adhesive resin 13 part made of hot melt adhesive resin 14 part made of hot melt adhesive resin 15 resin part containing linear low-density polyethylene resin and polybutene-1 resin 16 linear part Resin containing low density polyethylene resin and polybutene-1 resin

Claims (9)

袋を立てた状態における上端に位置する袋の開口端において表側および裏側または裏側および表側の各シート部の内面に雄型のジッパーテープの下端部と雌型のジッパーテープの下端部を接合させてなるジッパー付き包装袋において、両ジッパーテープ間を噛み合い部よりも下側位置で手で剥離できる程度のヒートシール強度で界面剥離可能、あるいは層間剥離可能、あるいは凝集剥離可能に接合させてあることを特徴とするジッパー付き包装袋。 The lower end of the male zipper tape and the lower end of the female zipper tape are joined to the inner surface of each of the front and back sides or the back and front side sheet portions at the open end of the bag located at the upper end in the standing state of the bag. In the packaging bag with a zipper, the two zipper tapes are bonded so that they can be peeled off at an interface with a heat seal strength enough to be peelable by hand at a position below the meshing portion so that they can be peeled off or delaminated or cohesively peeled off. Characteristic packaging bag with zipper. 両ジッパーテープの何れか一方はホットメルト型接着樹脂により作られ、他方は袋の内層を形成する材料と同系のポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られていることを特徴とする請求項１記載のジッパー付き包装袋。 2. The zipper tape according to claim 1, wherein one of the zipper tapes is made of a hot-melt adhesive resin, and the other is made of a polyethylene resin or a polypropylene resin similar to the material forming the inner layer of the bag. Packaging bag with zipper. 両ジッパーテープの何れか一方はホットメルト型接着樹脂により作られ、他方は外面、内面共に袋の内層を形成する材料と同系のポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られていることを特徴とする請求項１記載のジッパー付き包装袋。 One of the two zipper tapes is made of a hot-melt adhesive resin, and the other is made of a polyethylene resin or a polypropylene resin of the same type as the material forming the inner layer of the bag on the outer and inner surfaces. The packaging bag with a zipper according to claim 1. 両ジッパーテープの何れか一方はホットメルト型接着樹脂により作られ、他方は外面が袋の内層を形成する材料と同系のポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られ、内面は袋の内層を形成する材料と異なるポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られていることを特徴とする請求項１記載のジッパー付き包装袋。 One of the two zipper tapes is made of a hot melt type adhesive resin, the other is made of a polyethylene resin or a polypropylene resin having the same outer surface as the material forming the inner layer of the bag, and the inner surface forms the inner layer of the bag. The packaging bag with a zipper according to claim 1, wherein the packaging bag is made of a polyethylene resin or a polypropylene resin different from the material. 両ジッパーテープは内面がポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られ、両ジッパーテープの少なくとも噛み合い部よりも下側位置のヒートシールによる接合部位置において、一方のジッパーテープの内面にホットメルト型接着樹脂部分が設けられていることを特徴とする請求項１記載のジッパー付き包装袋。 The inner surfaces of both zipper tapes are made of polyethylene resin or polypropylene resin, and the hot melt type adhesive resin is attached to the inner surface of one zipper tape at the joint position by heat sealing at least below the meshing part of both zipper tapes. The packaging bag with a zipper according to claim 1, wherein a part is provided. ポリエチレン系樹脂もしくはポリプロピレン系樹脂により作られているジッパーテープの外面の少なくとも下端部には袋の内層に接合されるホットメルト型接着樹脂部分を設けるようにしたことを特徴とする請求項１記載のジッパー付き包装袋。 2. A hot-melt adhesive resin portion to be joined to an inner layer of a bag at least at a lower end portion of an outer surface of a zipper tape made of polyethylene resin or polypropylene resin. Packaging bag with zipper. 両ジッパーテープは直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂をランダムに配合した材料を含む樹脂を用いて作られていることを特徴とする請求項１記載のジッパー付き包装袋。 The packaging bag with a zipper according to claim 1, wherein both zipper tapes are made of a resin containing a material obtained by randomly mixing a linear low-density polyethylene resin and a polybutene-1 resin. 両ジッパーテープの少なくとも噛み合い部よりも下側位置のヒートシールによる接合部位置において、両ジッパーテープの内面に直鎖状低密度ポリエチレン樹脂とポリブテン−１樹脂をランダムに配合した材料を含む樹脂部分を備えていることを特徴とする請求項１記載のジッパー付き包装袋。 At least at the joining position by heat sealing at a position below the engagement portion of both zipper tapes, a resin portion containing a material in which linear low density polyethylene resin and polybutene-1 resin are randomly blended on the inner surfaces of both zipper tapes. The packaging bag with a zipper according to claim 1, further comprising: 雄型のジッパーテープ側と雌型のジッパーテープ側はそれぞれ互いに異なる色で着色されていることを特徴とする請求項１から請求項７までの何れか１項記載のジッパー付き包装袋。 The packaging bag with a zipper according to any one of claims 1 to 7, wherein the male zipper tape side and the female zipper tape side are colored with different colors, respectively.
JP2003351422A 2002-11-07 2003-10-10 Packaging bag with zipper Expired - Fee Related JP4293877B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007039077A (en) * 2005-08-03 2007-02-15 Unilever Nv Standing pouch for refilling
JP2007254021A (en) * 2006-03-27 2007-10-04 Daiwa Gravure Co Ltd Zippered packaging bag
JP2011155996A (en) * 2010-01-29 2011-08-18 C I Kasei Co Ltd Fastener tape
CN102753448A (en) * 2010-02-12 2012-10-24 出光统一科技株式会社 Zipper tape and packing bag with zipper tape
CN113428493A (en) * 2020-03-23 2021-09-24 重庆小锋包装袋有限责任公司 Flexible freight bag convenient for fixing opening and manufacturing process thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008155963A (en) * 2006-12-25 2008-07-10 Shinwa Sangyo Kk Wound material sheet for pillow-style package with zipper tape

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007039077A (en) * 2005-08-03 2007-02-15 Unilever Nv Standing pouch for refilling
JP2007254021A (en) * 2006-03-27 2007-10-04 Daiwa Gravure Co Ltd Zippered packaging bag
JP2011155996A (en) * 2010-01-29 2011-08-18 C I Kasei Co Ltd Fastener tape
CN102753448A (en) * 2010-02-12 2012-10-24 出光统一科技株式会社 Zipper tape and packing bag with zipper tape
CN113428493A (en) * 2020-03-23 2021-09-24 重庆小锋包装袋有限责任公司 Flexible freight bag convenient for fixing opening and manufacturing process thereof

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