JP2006131280A - Multi-layer paper bag - Google Patents

Multi-layer paper bag Download PDF

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JP2006131280A
JP2006131280A JP2004323740A JP2004323740A JP2006131280A JP 2006131280 A JP2006131280 A JP 2006131280A JP 2004323740 A JP2004323740 A JP 2004323740A JP 2004323740 A JP2004323740 A JP 2004323740A JP 2006131280 A JP2006131280 A JP 2006131280A
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tube body
paper bag
adhesive layer
film tube
layer
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JP4745643B2 (en
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Hidetoshi Honda
秀敏 本多
Yoshiki Shigeta
芳樹 重田
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Showa Paxxs Corp
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Showa Paxxs Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-layer paper bag allowing easily separation of only a film tube body of the multi-layer paper bag. <P>SOLUTION: Only multi-layer paper tube bodies (2 and 3) in the vicinity of a mouth 22, which do not include the film tube 21, are affixed together via an adhesive layer 6 of an adhesive. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、中間層に合成樹脂のフィルムからなるチューブ体を備えた多層紙袋の改良に関し、特にフィルムチューブ体とこれを覆う紙製チューブ体との分離を簡単に行なえるようにした多層紙袋に関する。   The present invention relates to an improvement of a multilayer paper bag provided with a tube body made of a synthetic resin film in an intermediate layer, and more particularly, to a multilayer paper bag which can easily separate a film tube body and a paper tube body covering the film tube body. .

従来からポリエチレン等の合成樹脂からなるフィルムチューブ体を多層の紙製チューブ体間に入れた紙袋、いわゆる多層紙袋は、気密性、防湿性、クリーン性等の点で適しているため大量に使用されている。   Conventionally, a paper bag in which a film tube body made of a synthetic resin such as polyethylene is placed between multilayer paper tube bodies, a so-called multilayer paper bag, is suitable in terms of airtightness, moisture resistance, cleanness, etc. ing.

図６は上述した従来の多層紙袋１（以下単に紙袋と言う）の概念断面図、図７はその右側面図である。   FIG. 6 is a conceptual sectional view of the above-described conventional multilayer paper bag 1 (hereinafter simply referred to as a paper bag), and FIG. 7 is a right side view thereof.

この紙袋１は、三層のチューブ体からなり、その最内層のチューブ体２と最外層のチューブ体３はクラフト紙等の紙材で構成され、その中間層のチューブ体４のみがポリエチレンフィルム等の合成樹脂で形成されている。 This paper bag 1 consists of a three-layer tube body, the innermost tube body 2 and the outermost tube body 3 are made of paper material such as kraft paper, and only the intermediate tube body 4 is a polyethylene film or the like. Made of synthetic resin.

そして、紙袋１の口部５側では、最内層のチューブ体２と中間層のフィルムチューブ体４との間が接着剤の接着層６を介して固着され、また中間層のフィルムチューブ体４と最外層のチューブ体３との間も同様に接着剤の接着層６で固着されている。即ち、合成樹脂で形成された中間層のフィルムチューブ体４は最内層のチューブ体２と最外層のチューブ体３とにそれぞれ接着層６を介して固着し、互いに分離不可能な構造となっている。   On the mouth 5 side of the paper bag 1, the innermost tube body 2 and the intermediate film tube body 4 are fixed via an adhesive adhesive layer 6, and the intermediate film tube body 4 The outermost tube body 3 is similarly fixed with an adhesive layer 6 of an adhesive. That is, the intermediate-layer film tube body 4 made of synthetic resin is fixed to the innermost tube body 2 and the outermost tube body 3 via the adhesive layer 6 and cannot be separated from each other. Yes.

なお、この紙袋１の底部７は、最内層のチューブ体２、中間層のフィルムチューブ体４、および最外層のチューブ体３のいずれもが互いに接着されることなく、一方向へ折り曲げられ、その後、カットテープ付き底当て紙８により接着剤の接着層６を介して封緘されている。   The bottom 7 of the paper bag 1 is folded in one direction without the innermost tube body 2, the intermediate film tube body 4, and the outermost tube body 3 being bonded to each other. It is sealed with an adhesive layer 6 of an adhesive by a bottom backing paper 8 with a cut tape.

このような紙袋１では、開放された口部５内に図８で示すように、砂糖、各種粉類、穀物あるいはプロティン等の食品類、若しくは樹脂ペレット等の工業素材類（以下単に内容物９と言う）を収容した後、口部５を折り曲げ、底部７と同様にカットテープ等の口当て紙１０により封緘し、輸送や保管に使用するようにしている。   In such a paper bag 1, as shown in FIG. 8, sugar, various powders, foods such as grains or protein, or industrial materials such as resin pellets (hereinafter simply referred to as contents 9) The mouth portion 5 is bent and sealed with a mouthpiece paper 10 such as a cut tape like the bottom portion 7 and used for transportation and storage.

ところで、近年では上述した紙袋１の使用後、合成樹脂で形成された中間層のフィルムチューブ体４を最内層のチューブ体２と最外層のチューブ体３から分離し、これにより紙材である最内層のチューブ体２と最外層のチューブ体３とをリサイクル使用して再利用する考えがある。   By the way, in recent years, after the use of the paper bag 1 described above, the intermediate layer film tube body 4 formed of synthetic resin is separated from the innermost layer tube body 2 and the outermost layer tube body 3, and thereby the outermost layer of the paper material. There is an idea to recycle and reuse the inner layer tube body 2 and the outermost layer tube body 3.

ところが、従来の紙袋１は、中間層のフィルムチューブ体４が接着剤の接着層６を介して最内層のチューブ体２と最外層のチューブ体３とにそれぞれ固着しているから、図９で示すように、使用後の紙袋１の底部７を開封し、そこから矢印Ｘで示すようにフィルムチューブ体４のみを引張して取り出そうとしても取り出すことはできず、この結果、使用後の従来の紙袋１は合成樹脂のフィルムチューブ体４が付着したままであるから産業廃棄物として処分しなければならない重大な問題点があった。   However, in the conventional paper bag 1, the film tube body 4 of the intermediate layer is fixed to the tube body 2 of the innermost layer and the tube body 3 of the outermost layer through the adhesive layer 6 of the adhesive, respectively. As shown, the bottom 7 of the used paper bag 1 is unsealed, and as shown by the arrow X, only the film tube body 4 cannot be pulled out and taken out. The paper bag 1 has a serious problem that it must be disposed of as industrial waste because the synthetic resin film tube body 4 remains attached.

この発明は、上述した事情に鑑み、多層紙袋のうち、フィルムチューブ体のみを簡単に分離することが出来る多層紙袋を提供する。   This invention provides the multilayer paper bag which can isolate | separate only a film tube body easily among multilayer paper bags in view of the situation mentioned above.

上述した課題を解決するため、この発明では、中間層にフィルムチューブ体を有する多層の紙製チューブ体からなる多層紙袋において、前記フィルムチューブ体を除き、口部付近の前記多層の紙袋チューブ体間のみを接着剤の接着層を介し、互いに固着するようにしている。   In order to solve the above-described problems, in the present invention, in a multilayer paper bag made of a multilayer paper tube body having a film tube body in an intermediate layer, the film tube body is excluded, and the space between the multilayer paper bag tube bodies in the vicinity of the mouth portion. Only the adhesive is fixed to each other through the adhesive layer.

上述した本願発明に係る多層紙袋によると、フィルムチューブ体は多層の紙製チューブ体のいずれにも接着固定されていないため、底部を開封して多層の紙製チューブ体間からフィルムチューブ体を引き出せば、当該フィルムチューブ体のみが簡単に引き出されて取り除くことが出来、このためフィルムチューブ体と多層の紙製チューブ体とを簡単な操作で分離し、これにより多層の紙製チューブ体のみをリサイクル使用して再利用することが出来るだけでなく、取り除いたフィルムチューブ体をリサイクルして再利用することもできる。   According to the multilayer paper bag according to the present invention described above, since the film tube body is not bonded and fixed to any of the multilayer paper tube bodies, the bottom can be opened and the film tube body can be pulled out between the multilayer paper tube bodies. For example, only the film tube body can be easily pulled out and removed, so the film tube body and the multi-layer paper tube body can be separated by a simple operation, thereby recycling only the multi-layer paper tube body. Not only can it be used and reused, but the removed film tube body can also be recycled and reused.

以下、この発明に係る多層紙袋の一実施例を詳述する。   Hereinafter, an embodiment of the multilayer paper bag according to the present invention will be described in detail.

図１はこの発明に係る多層紙袋２０（以下単に紙袋と言う）の概念断面図、図２はその右側面図である。なお、図９乃至図１１と同一部分は同一符号で示す。   FIG. 1 is a conceptual sectional view of a multilayer paper bag 20 (hereinafter simply referred to as a paper bag) according to the present invention, and FIG. 2 is a right side view thereof. 9 to 11 are denoted by the same reference numerals.

この紙袋２０も三層の袋体からなり、その最内層のチューブ体２と最外層のチューブ体３はクラフト紙等の紙材で構成され、その中間層のチューブ体２１がポリエチレンフィルム等の合成樹脂で形成されている。   The paper bag 20 is also composed of three layers, the innermost tube body 2 and the outermost tube body 3 are made of paper such as kraft paper, and the intermediate tube body 21 is a synthetic film such as polyethylene film. It is made of resin.

そして、紙袋２０の口部２２側では、最内層のチューブ体２と最外層のチューブ体３との間のみが接着剤の接着層６で固着されている。なお、この接着層６は図２で示すように所定のピッチで間欠的に、かつ円形に形成されている。 On the mouth 22 side of the paper bag 20, only the innermost tube body 2 and the outermost tube body 3 are fixed with an adhesive layer 6 of an adhesive. The adhesive layer 6 is formed intermittently and circularly at a predetermined pitch as shown in FIG.

一方、中間層のフィルムチューブ体２１は、図２で示すように、紙袋２０の口部２２側に位置する先端部２１ａが直線状に形成され、かつその先端部２１ａは、図１に示すように接着層６から離間した位置（ずれた位置）に配設されている。   On the other hand, as shown in FIG. 2, the film tube body 21 of the intermediate layer has a straight end portion 21a positioned on the mouth portion 22 side of the paper bag 20, and the front end portion 21a is as shown in FIG. Further, they are arranged at positions (displaced positions) separated from the adhesive layer 6.

即ち、合成樹脂で形成された中間層のフィルムチューブ体２１は最内層のチューブ体２と最外層のチューブ体３のいずれにも固着されていない構造となっている。 That is, the intermediate-layer film tube body 21 made of synthetic resin has a structure that is not fixed to either the innermost tube body 2 or the outermost tube body 3.

なお、この紙袋２０の底部２３も、最内層のチューブ体３、中間層のフィルムチューブ体２１、および最外層のチューブ体３のいずれも互いに接着されることなく、一方向へ折り曲げられ、その後、カットテープ等の底当て紙８により封緘されている。 The bottom 23 of the paper bag 20 is also folded in one direction without any of the innermost tube body 3, the intermediate film tube body 21, and the outermost tube body 3 being bonded to each other. It is sealed with a bottom backing paper 8 such as a cut tape.

このような紙袋２０では、開放された口部２２内に図３で示すように、砂糖、各種粉類、穀物あるいはプロティン等の食品類、若しくは樹脂ペレット等の工業素材類（以下単に内容物９と言う）を収容した後、口部２２を折り曲げ、底部２３と同様にカットテープ等の口当て紙１０により封緘し、輸送や保管に使用する。   In such a paper bag 20, as shown in FIG. 3, in the opened mouth portion 22, food such as sugar, various powders, grains or protein, or industrial materials such as resin pellets (hereinafter simply referred to as contents 9). The mouth portion 22 is bent and sealed with the mouthpiece 10 such as a cut tape in the same manner as the bottom portion 23, and used for transportation and storage.

一方、紙袋２０の使用後、即ち口部２２を開封して内容物９を取り除いた後、紙袋２０の底部２３を開封すると、図４で示すように、中間層のフィルムチューブ体２１は最内層のチューブ体２と最外層のチューブ体３とにそれぞれ固着されていないから、そこから矢印Ｙで示すようにフィルムチューブ体２１の下端２１ｂのみを引張すれば、当該フィルムチューブ体２１は底部２３から簡単に引き出して取り出すことができ、これによりフィルムチューブ体２１を紙袋２０から分離し、紙材からなる最内層のチューブ体２と最外層のチューブ体３のみを取り出し、リサイクルして再利用することが出来る。なお、取り除いた合成樹脂のフィルムチューブ体２１もリサイクルして再利用することができることもいうまでもない。 On the other hand, when the paper bag 20 is used, that is, after the mouth portion 22 is opened and the contents 9 are removed, when the bottom portion 23 of the paper bag 20 is opened, as shown in FIG. Since the tube body 2 and the outermost tube body 3 are not fixed to each other, if only the lower end 21b of the film tube body 21 is pulled from there, as shown by the arrow Y, the film tube body 21 is removed from the bottom 23. The film tube body 21 is separated from the paper bag 20 by this, and only the innermost tube body 2 and the outermost tube body 3 made of paper are taken out, recycled, and reused. I can do it. It goes without saying that the removed synthetic resin film tube body 21 can also be recycled and reused.

なお、上記実施例では、図２に示すように中間層のフィルムチューブ体２１は紙袋２０の口部２２側に位置する先端部２１ａを直線状に形成し、かつその先端部２１ａの配置位置を接着層６から離間した位置（ずらした位置）に配置するようにしたが、この発明は上記実施例に限定されることなく、図２と同一部分を同一符号で示す図５のように、最内層のチューブ体２と最外層のチューブ体３との間のみを固着する平面円形の接着層６から離間すべく、フィルムチューブ体２１の先端部２１ａに平面円形の接着層６を囲繞する円弧形状の切り欠２１ｃを形成し、その先端部２１ａをより一層紙袋２０の口部２２側に接近させ、フィルムチューブ体２１により紙袋２０を覆う領域をより一層大きく確保するようにしても良い。
なお、上記実施例では、三層の多層紙袋２０について詳述したが、この発明は上記実施例に限定されることなく、三層以上の多層紙袋に適用しても良く、その場合もフィルムチューブ体を除き、口部付近の多層の紙製チューブ体間のみを接着剤の接着層を介し、互いに固着するようにする。 In the above embodiment, as shown in FIG. 2, the film tube body 21 of the intermediate layer forms a straight end portion 21a located on the mouth portion 22 side of the paper bag 20, and the arrangement position of the front end portion 21a is determined. Although it is arranged at a position separated from the adhesive layer 6 (shifted position), the present invention is not limited to the above-described embodiment, and as shown in FIG. An arc shape that surrounds the flat circular adhesive layer 6 at the tip 21a of the film tube body 21 so as to be separated from the flat circular adhesive layer 6 that fixes only the inner tube body 2 and the outermost tube body 3 only. Alternatively, the notch 21c may be formed, and the tip 21a may be further brought closer to the mouth 22 side of the paper bag 20, so that the region covering the paper bag 20 by the film tube body 21 may be further ensured.
In the above embodiment, the multilayer paper bag 20 having three layers has been described in detail. However, the present invention is not limited to the above embodiment, and may be applied to a multilayer paper bag having three or more layers. Except for the body, only the space between the multilayer paper tube bodies near the mouth is fixed to each other through the adhesive layer of the adhesive.

また。図２の実施例では、接着層６を所定のピッチで間欠的に、かつ円形に形成するようにしたが、この発明は上記実施例に限定されることなく、図７の従来例と同様に、接着層６を間欠的ではなく直線状に形成するようにしても良い。 Also. In the embodiment of FIG. 2, the adhesive layer 6 is intermittently formed in a circular shape at a predetermined pitch. However, the present invention is not limited to the above embodiment, and is similar to the conventional example of FIG. The adhesive layer 6 may be formed in a straight line instead of intermittently.

以上説明したように、この発明は、簡単な操作で紙製チューブ体と合成樹脂のフィルムチューブ体とを分離し、これにより紙材を再利用することができるようにした多層紙袋に適している。   As described above, the present invention is suitable for a multi-layer paper bag in which a paper tube body and a synthetic resin film tube body are separated by a simple operation so that the paper material can be reused. .

図１はこの発明に係る多層紙袋の概念断面図。FIG. 1 is a conceptual sectional view of a multilayer paper bag according to the present invention. 図２は図１の右側面図。FIG. 2 is a right side view of FIG. 図３は内容物を収納した状態を示す概念断面図。FIG. 3 is a conceptual cross-sectional view showing a state in which contents are stored. 図４はフィルムチューブ体の分離操作を示す断面図。FIG. 4 is a cross-sectional view showing the separation operation of the film tube body. 図５は他の実施例を示す多層紙袋の正面図。FIG. 5 is a front view of a multilayer paper bag showing another embodiment. 図６は従来の多層紙袋の概念断面図。FIG. 6 is a conceptual cross-sectional view of a conventional multilayer paper bag. 図７は図６の右側面図。7 is a right side view of FIG. 図８は内容物を収納した状態を示す断面図。FIG. 8 is a cross-sectional view showing a state in which contents are stored. 図９はフィルムチューブ体の分離操作を示す断面図。FIG. 9 is a cross-sectional view showing the separation operation of the film tube body.

符号の説明Explanation of symbols

６…接着層
２，３…紙製チューブ体
２１…フィルムチューブ体
２０…多層紙袋
２１ａ…先端部
２１ｃ…切り欠
２２…口部 6 ... Adhesive layers 2, 3 ... Paper tube body 21 ... Film tube body 20 ... Multi-layer paper bag 21a ... Tip portion 21c ... Notch 22 ... Mouth portion

Claims (4)

多層の紙製チューブ体の中間層にフィルムチューブ体を有する多層紙袋において、
前記フィルムチューブ体を除き、口部付近の前記多層の紙袋チューブ体間のみを接着剤の接着層を介し、互いに固着するようにしたことを特徴とする多層紙袋。
In a multilayer paper bag having a film tube body in an intermediate layer of a multilayer paper tube body,
A multilayer paper bag characterized in that, except for the film tube body, only the multilayer paper bag tube body near the mouth is fixed to each other through an adhesive layer of an adhesive.
前記口部側に位置する前記フィルムチューブ体の先端部は直線状に形成され、かつ前記フィルムチューブ体の先端部は前記接着剤の接着層から離間した位置に配置されることを特徴とする請求項１に記載の多層紙袋。
The distal end portion of the film tube body positioned on the mouth side is formed in a straight line shape, and the distal end portion of the film tube body is disposed at a position separated from the adhesive layer of the adhesive. Item 11. A multilayer paper bag according to Item 1.
前記接着剤の接着層は所定のピッチで間欠的に形成され、前記口部側に位置する前記フィルムチューブ体の先端部には、前記接着層から離間し、かつ該接着層を囲繞する切り欠が形成されていることを特徴とする請求項２に記載の多層紙袋。
The adhesive layer of the adhesive is intermittently formed at a predetermined pitch, and a notch that is spaced apart from the adhesive layer and surrounds the adhesive layer is formed at the distal end of the film tube body located on the mouth side. The multilayer paper bag according to claim 2, wherein the multi-layer paper bag is formed.
前記接着層は平面円形であり、前記切り欠は前記円形の接着層を囲繞する略円弧形状の切り欠であることを特徴とする請求項３に記載の多層紙袋。
The multilayer paper bag according to claim 3, wherein the adhesive layer is a flat circular shape, and the cutout is a substantially arc-shaped cutout surrounding the circular adhesive layer.
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