JPH0637217B2 - Paper bag - Google Patents
Paper bagInfo
- Publication number
- JPH0637217B2 JPH0637217B2 JP24376190A JP24376190A JPH0637217B2 JP H0637217 B2 JPH0637217 B2 JP H0637217B2 JP 24376190 A JP24376190 A JP 24376190A JP 24376190 A JP24376190 A JP 24376190A JP H0637217 B2 JPH0637217 B2 JP H0637217B2
- Authority
- JP
- Japan
- Prior art keywords
- mouth
- bag
- bag body
- paper
- tubular body
- 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.)
- Expired - Fee Related
Links
Landscapes
- Bag Frames (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は紙袋に関し、更に詳細に述べれば、実質的に両
端部を階段切りとした袋本体からなる紙袋の改良に関す
る。Description: TECHNICAL FIELD The present invention relates to a paper bag, and more specifically, to an improvement of a paper bag including a bag main body in which both ends are substantially stepped.
（従来の技術） 一般に、紙袋を構成する袋本体の端部において、前後壁
の一方を他方に対して階段状に突出させて段部を形成し
た紙袋は、例えば実公昭57-42824号公報、実公昭58-289
77号公報、実公昭59-1957号公報および実公昭59-24677
号公報などに開示されており公知である。(Prior Art) Generally, at the end of a bag body that constitutes a paper bag, a paper bag in which one of the front and rear walls is stepwise projected with respect to the other to form a step is disclosed in, for example, Japanese Utility Model Publication No. 57-42824 58-289
Japanese Patent No. 77, Japanese Utility Model Publication 59-1957 and Japanese Utility Model Publication 59-24677
It is disclosed in, for example, Japanese Patent Publication and is known.
この種の紙袋の底部は階段面を内向きに１回折り曲げて
紙袋の外壁面にホットメルト系接着剤で粘着して閉塞さ
れ、また口部は階段面にホットメルト系接着剤を製袋時
に予め塗布しておき、紙袋内に内容物が入れられた後に
熱風で接着剤を再活性させ折り曲げて接着閉塞される。The bottom of this kind of paper bag is bent inward one step to stick it to the outer wall of the paper bag with a hot-melt adhesive to close it, and the mouth of the bag is filled with hot-melt adhesive on the stairs during bag making. It is applied in advance, and after the contents are put in a paper bag, the adhesive is reactivated with hot air and folded to bond and block.
このような階段切り１回貼り紙袋（ピンチ袋）は、内容
物充填後の封緘が単純で極めて容易であり、しかも内容
物の漏れがほとんどないという点で大量に使用されてい
る。また、そのために紙袋に内容物を充填後、熱風で接
着剤を再活性させてその口部を接着閉塞する機械（トッ
プシーラー）も多くのこの種紙袋使用者が所有してい
る。Such a paper bag (pinch bag), which is attached once with stairs, is used in a large amount in that sealing after filling the contents is simple and extremely easy, and there is almost no leakage of the contents. For this reason, many seed paper bag users also own a machine (top sealer) that refills a paper bag with contents and then reactivates the adhesive with hot air to bond and close its mouth.
（発明が解決しようとする課題） しかしながら、従来のピンチ袋では上述の利点はあるも
のの開封しにくい、という非常に重要な問題があった。
このような開封のしにくさを解消させるため袋本体の階
段状底部を巻き込むように２度折り曲げ、この巻込み部
を包囲するように開封用テープ付きの当て紙を跨いで当
てて閉鎖し、この閉鎖部を開封口とすることが考えられ
た。確かにこの構造によると紙袋の開封時、開封用テー
プを引き上げて当て紙を幅方向に引き破り、階段状底部
の巻込み部をほどけば容易に開封できる。(Problems to be Solved by the Invention) However, the conventional pinch bag has a very important problem that it is difficult to open although it has the above-mentioned advantages.
In order to eliminate such difficulty of opening, the stepped bottom of the bag body is folded twice so as to be rolled up, and the patched paper with the tape for opening is straddled and closed so as to surround this rolled-up portion, It was considered that this closed part should be used as an opening. Certainly, according to this structure, when the paper bag is opened, the opening tape can be pulled up to tear the backing paper in the width direction, and the winding portion at the bottom of the step can be unwound easily.
しかしながら、この提案された紙袋によると、開封口と
なる底部閉鎖部からの内容物の漏れが発生するという致
命的な問題があった。この漏れの発生原因は、いくら底
部を巻き込むように２度折曲げても、この部分が階段状
に形成されているため所によっては実質１回の折曲げに
しかならない部分もあるためであることが判明した。そ
のため、予め袋本体の断裁寸法（端部階段切り袋本体の
場合片側壁面の長手方向全長寸法）を数％長くして形成
し、その上で底部階段部分をカットした直線端部とし、
これを巻き込んで閉鎖するか、或いは底部階段部分を３
重，４重に巻き込んで閉鎖するかのいずれかの方法が考
えられた。しかし、これらの方法によって製造された紙
袋は当然のことながら紙の使用量が多くなるため省資源
に反するばかりか製造価格が高くなり、しかも後者の方
法については更に閉鎖部が大きくなって取扱いにくくな
るということまで加わって、商品としては問題があっ
た。However, according to the proposed paper bag, there has been a fatal problem that the content leaks from the bottom closed portion serving as the opening. The cause of this leak is that no matter how many times the bottom part is bent, the part is formed only in a step because the part is formed in a staircase shape. There was found. Therefore, the cutting dimensions of the bag body (in the case of the end staircase cutting bag body, the length in the longitudinal direction of the side wall surface in the longitudinal direction of the bag body) are formed to be several% longer, and the bottom staircase portion is cut into a straight end portion,
It can be rolled up and closed, or the bottom staircase can be
One of the methods was to fold it into four or four layers and close it. However, the paper bag manufactured by these methods naturally consumes a large amount of paper, which not only contradicts resource saving but also raises the manufacturing cost, and the latter method further increases the size of the closed portion and is difficult to handle. In addition to that, there was a problem as a product.
この種のピンチ袋は前述したように内容物充填後に使用
者が口部をトップシーラーで閉鎖するものであり、充填
口閉鎖法の利便性と多くの使用者が所有するトップシー
ラーの有効利用から考えて、口部の構造を変更すること
は好ましくはない。しかし、袋本体の連続的製造から考
えて口部側と底部側とは対応した形状即ち口部側を階段
状に形成すれば底部側も階段状となり、又口部側を直線
切りとすれば底部側も直線切りとなることは周知の事実
で、従って袋本体の口部閉鎖法を変えずに開封容易で且
つ漏れがなく、製造コストの上昇を招かず、しかも取扱
い性に問題を生じないなどという紙袋の提供は不可能で
あり、もしこのような紙袋ができればそれは製袋業界に
おいて画期的なことと考えられていた。As described above, this type of pinch bag is one in which the user closes the mouth with a top sealer after filling the contents, and from the convenience of the filling port closing method and the effective use of the top sealer owned by many users. Considering that, it is not preferable to change the structure of the mouth portion. However, considering the continuous production of the bag body, if the mouth side and the bottom side are formed in a corresponding shape, that is, if the mouth side is formed in a step shape, the bottom side also becomes a step shape, and if the mouth side is cut straight. It is a well-known fact that the bottom side is also cut straight, so it is easy to open without changing the method of closing the mouth of the bag body, there is no leakage, no increase in manufacturing cost is caused, and there is no problem in handleability. It was impossible to provide such a paper bag, and if such a paper bag were made, it was considered to be a breakthrough in the bag making industry.
本発明の目的は、かかる従来の問題点を解決するために
なされたもので、口部が階段状に形成された袋本体（従
って底部も階段状に形成されている）の当該口部階段面
を内容物充填後に予め塗布されていたホットメルト系接
着剤で外壁面に接着閉鎖する方法を変えずに、開封容易
で、漏れがなく、製造コストの上昇を招かず、しかも取
扱い性の容易な底部閉鎖部を備える紙袋を提供すること
にある。The object of the present invention is to solve the above-mentioned conventional problems, and the mouth portion stair surface of the bag main body in which the mouth portion is formed in a step shape (hence the bottom portion is also formed in a step shape). It is easy to open without leaking without increasing the manufacturing cost without changing the method of adhering and closing the outer wall surface with the hot melt adhesive previously applied after filling the contents, and it is easy to handle. To provide a paper bag with a bottom closure.
（課題を解決するための手段） 本発明の紙袋は、第１に、両端部を直線切りとした内層
の筒状体と両端部を階段切りとした少なくとも外層の筒
状体とを備える襞付の袋本体であって前記内層筒状体の
一端部である口部側の端縁が前記袋本体の口部折線より
長手方向外側にあって且つ前記袋本体の口部内に隠れる
ように位置すべく他の層に対して長手方向にずらして組
合わされた襞付の袋本体と、該袋本体の他端部である底
部側を階段面が内側に折り込まれるように１度折り曲
げ、更に該折曲げ部を再度折り曲げて３重折曲げ部と
し、該３重折曲げ部を包囲するように開封用テープ付き
の当て紙を跨いで当てた内容物取出しのための開封口と
なる閉鎖部と、前記袋本体の前記階段状口部に塗布され
たホットメルト系接着剤とを含んで構成されている。(Means for Solving the Problem) First, the paper bag of the present invention is provided with a fold with an inner-layer tubular body having both ends cut linearly and at least an outer-layer tubular body having both ends stepped. In the bag body, the edge of the inner layer tubular body on the side of the mouth, which is one end, is located outside the mouth fold line of the bag body in the longitudinal direction and is hidden in the mouth of the bag body. The bag body with folds, which is shifted with respect to the other layers in the longitudinal direction, and the bottom side, which is the other end of the bag body, are bent once so that the step surface is folded inward, and the folding is further performed. A bent portion is bent again to form a triple folded portion, and a closing portion that serves as an opening for taking out contents is provided by straddling a patch paper with an opening tape so as to surround the triple folded portion, And a hot-melt adhesive applied to the stepped mouth portion of the bag body. There is.
本発明の紙袋は、第２に、前述の構成な加えて前記襞付
の袋本体が両端部を階段切りとした少なくとも１枚の中
間層の筒状体を更に備えていることを特徴とする。Secondly, the paper bag of the present invention is characterized in that, in addition to the above-mentioned configuration, the foldd bag body further includes at least one intermediate-layer tubular body having both ends cut in steps. .
更に、本発明の紙袋は、第３に、両端部を直線切りとし
た外層の筒状体と両端部を階段切りとした少なくとも内
層の筒状体とを備える襞付の袋本体であって前記外層筒
状体の一端部である口部側の端縁が前記袋本体の口部折
線と該外層筒状体口部端縁を除く前記袋本体口部の最も
長手方向内方寄りの端縁との間に位置すべく他の層に対
して長手方向にずらして組合わされた襞付の袋本体と、
該袋本体の他端部である底部側を階段面が内側に折り込
まれるように１度折り曲げ、更に該折曲げ部を再度折り
曲げて３重折曲げ部とし、該３重折曲げ部を包囲するよ
うに開封用テープ付きの当て紙を跨いで当てた内容物取
出しのための開封口となる閉鎖部と、前記袋本体の口部
側階段面裏側に配置され、前記外層の筒状体口部側端縁
に一端が固着され、他端が前記袋本体口部の最も長手方
向外方の端縁より突出した補助フラップと、該補助フラ
ップの突出部を含んで前記袋本体で形成される口部階段
面に塗布されたホットメルト系接着剤とを含んで構成さ
れている。Furthermore, thirdly, the paper bag of the present invention is a pleated bag body provided with an outer layer tubular body whose both ends are linearly cut and at least an inner layer tubular body whose both ends are step-cut. The edge on the mouth side, which is one end of the outer layer tubular body, is the most inner edge in the longitudinal direction of the bag body mouth excluding the mouth fold line of the bag body and the outer edge of the outer layer tubular body. A foldable bag body that is shifted in the longitudinal direction with respect to the other layers so as to be located between
The bottom side, which is the other end of the bag body, is bent once so that the staircase surface is folded inward, and the bent portion is bent again to form a triple folded portion, and the triple folded portion is surrounded. As described above, a closing portion which serves as an opening for taking out contents by straddling a patch with an opening tape, and a cylindrical body mouth of the outer layer, which is arranged on the back side of the staircase side of the mouth side of the bag body. An auxiliary flap, one end of which is fixed to the side edge and the other end of which protrudes from the outermost edge of the mouth of the bag main body in the longitudinal direction, and an opening formed in the bag main body that includes the protruding portion of the auxiliary flap. And a hot melt adhesive applied to the staircase surface of the part.
（作用） 本発明の紙袋によると、両端部を直線切りとされた内層
の筒状体と両端部を階段切りとされた外層の筒状体から
構成されるか若しくはこれに同じく両端部を階段切りと
された中間層の筒状体が加わった袋本体において、内層
の筒状体の底部側の端縁は各層の筒状体の断裁寸法が同
じであることから外層（および中間層）の底部側階段面
の開口部に位置する。そして、袋本体の底部を２度折り
曲げて３重折曲げ部を形成し、開封用テープ付きの当て
紙を当てて閉鎖された閉鎖部は、内層の直線切り端部が
共に折り曲げられているため、内容物の当該閉鎖部から
の漏れは完全に阻止される。この底部閉鎖部は内容物を
紙袋から取出す際開封口として供されるが、その場合、
当て紙を開封用テープを利用して破ることにより３重折
曲げ部を延ばして口をあけ内容物を取り出す。(Operation) According to the paper bag of the present invention, it is composed of an inner-layer tubular body whose both ends are cut straight and an outer-layer tubular body whose both ends are stepped. In the bag body to which the cut intermediate-layer tubular body is added, since the bottom edge of the inner-layer tubular body has the same cutting dimensions for the tubular bodies of the respective layers, the outer layer (and the intermediate layer) It is located at the opening of the stairway on the bottom side. Then, the bottom of the bag body is folded twice to form a triple-folded portion, and the closing portion which is closed by applying the patch paper with the unsealing tape has the linear cut end portions of the inner layer folded together. , The leakage of the contents from the closure is completely prevented. This bottom closure serves as an opening when removing the contents from the paper bag.
The backing paper is broken using an opening tape to extend the triple-folded portion, open the mouth, and take out the contents.
また、第２に外層の筒状体端部を直線切りとした袋本体
を備える本発明の紙袋によると、外層の筒状体の底部側
端部内に他の層の底部側階段面が位置して隠れ、この袋
本体の底部を２度折り曲げて３重折曲げ部を形成し、開
封用テープ付きの当て紙を当てて閉鎖された閉鎖部は、
外層の直線切り端部が共に折曲げられているため、内容
物の当該閉鎖部からの漏れは完全に阻止される。この底
部閉鎖部を開封する場合は前述したと同じようにして開
封する。ところで、外層の口部側端縁が袋本体の口部折
曲げ線とこの外層筒状体口部端縁を除く袋本体口部の最
も長手方向内方寄りの端縁との間に位置させた場合、階
段面に塗布したホットメルト系接着剤では口部の閉鎖が
できなくなるが、袋本体の口部側階段面裏側に配置し且
つ一端を外層筒状体の直線端部に固着した補助フラップ
の他端を袋本体口部の最も長手方向外方の端縁より突出
させることで実質的にこの補助フラップの突出端を含め
て階段面とし、ここにホットメルト系接着剤を塗布する
ことで内容物充填後の口部閉鎖がこの構成によっても可
能となる。Secondly, according to the paper bag of the present invention including the bag body in which the end portion of the outer layer tubular body is linearly cut, the bottom side step surface of another layer is located within the bottom side end portion of the outer layer tubular body. Hide and hide, the bottom part of this bag body is folded twice to form a triple-folded part, and the closing part which is closed by applying a patch with an opening tape,
Since the straight cut ends of the outer layer are bent together, leakage of the contents from the closure is completely prevented. When opening the bottom closed portion, it is opened in the same manner as described above. By the way, the edge of the outer layer on the mouth side is located between the mouth fold line of the bag body and the edge of the mouth portion of the bag body excluding the end edge of the outer layer tubular body, which is most inward in the longitudinal direction. In this case, the hot-melt adhesive applied to the stairs cannot close the mouth, but it is placed behind the stairs on the mouth side of the bag body and one end is fixed to the straight end of the outer tubular body. By projecting the other end of the flap from the outermost edge of the mouth of the bag main body in the longitudinal direction, substantially forming a step surface including the protruding end of this auxiliary flap, and applying a hot melt adhesive to it. With this configuration, the mouth part can be closed after filling the contents.
（実施例） 以下、本発明の紙袋を添付図面に示された実施例につい
て更に詳細に説明する。(Example) Hereinafter, the paper bag of the present invention will be described in more detail with reference to the examples shown in the accompanying drawings.
第１図および第２図には本発明の一実施例に係る紙袋１
０が示されている。この紙袋１０は、第１図および第２
図から明らかなように、両端部を階段切りとした外層お
よび中間層の２つの襞付筒状体１１，１２の中に、両端
部が直線切りされた１つの襞付筒状体１３を内層として
配置した袋本体１４を含む。この袋本体１４における外
層および中間層の各筒状体１１，１２の両端部階段面は
その向きが相反するように形成されている。1 and 2 show a paper bag 1 according to an embodiment of the present invention.
0 is shown. This paper bag 10 is shown in FIGS.
As is apparent from the figure, one pleated tubular body 13 whose both ends are linearly cut is formed in the inner layer of the two pleated tubular bodies 11 and 12 of the outer layer and the intermediate layer which are stepped at both ends. Including the bag body 14 arranged as. The stepped surfaces at both ends of each of the outer and middle tubular bodies 11 and 12 in the bag body 14 are formed so that their directions are opposite to each other.
本来、この種の紙袋を構成する袋本体の各筒状体は断裁
寸法ｌがすべて同じであり、階段切り端部の各筒状体は
両端部に階段面が現出するように組合されている。そし
て、本実施例の紙袋１０において袋本体１４を構成する
直線切り端部の内層筒状体１３はその口部側端縁１３ａ
が袋本体１４の口部折線１５より長手方向外方にあって
且つ袋本体１４の口部内に隠れる位置にくるように他の
層に組合されている。その理由は、内容物充填後に口部
端部を折線１５で折り曲げて閉鎖した時、折線１５に沿
う部分に位置することとなる襞部折り込み部には内圧に
より非常に大きな力が加わり強度不足となって襞部が破
れるおそれがあり、そのため口部の折線部分には袋本体
を構成する全層を位置させておく必要があるためであ
る。このことは後述する他の実施例についても同じであ
る。従って、内層筒状体１３の底部側端縁１３ｂは外層
筒状体１１と中間層筒状体１２との各底部側端部で形成
された階段面の開口部に出て露出している。Originally, all the tubular bodies of the bag body constituting this type of paper bag have the same cutting dimension l, and the tubular bodies at the stair cut end are combined so that the stair surface appears at both ends. There is. Then, in the paper bag 10 of the present embodiment, the inner layer tubular body 13 at the straight line cut end portion which constitutes the bag body 14 has its mouth side end edge 13a.
Is combined with another layer so as to be located outside the mouth folding line 15 of the bag body 14 in the longitudinal direction and to be hidden in the mouth portion of the bag body 14. The reason is that when the end of the mouth portion is folded along the folding line 15 and closed after the contents are filled, a very large force is applied to the folded portion of the fold that will be located in the portion along the folding line 15 due to internal pressure, resulting in insufficient strength. This is because the folds may be torn, and it is therefore necessary to position all layers constituting the bag body at the fold line of the mouth. This also applies to other embodiments described later. Therefore, the bottom side end edge 13b of the inner layer tubular body 13 is exposed and exposed at the opening of the stepped surface formed by the bottom side end portions of the outer layer tubular body 11 and the intermediate layer tubular body 12.
この底部側は、紙袋１０の内容物が充填された後該内容
物を取出す際の開封口となるもので、そのため将来の開
封が容易なように閉鎖されている。すなわち、紙袋１０
の底部閉鎖部１６は、外層および中間層の筒状体１１，
１２における階段面を内向きにして内層の筒状体１３の
端部を含む袋本体１４の端部全体を折線１７に沿って折
り曲げ（第３図）、その後この折曲げ部のほぼ中央部に
沿う第２の折線１８に沿って最初と同じ折り曲げ側に全
層を再度折り曲げて３重折曲げ部１９を形成し、この３
重折曲げ部１９を包囲するように跨がる当て紙２０を当
て、該当て紙２０の各縁部を外壁面に接着剤２１で固着
することにより閉鎖されている。なお、当て紙２０の内
面には折曲部の位置する側に開封即ち当て紙２０を引き
破るためのテープ２２が接着されている。The bottom side serves as an opening when the contents of the paper bag 10 are filled and then taken out, and is therefore closed for easy future opening. That is, the paper bag 10
Bottom closure 16 of the outer and middle layers of the tubular body 11,
The entire end portion of the bag body 14 including the end portion of the cylindrical body 13 of the inner layer is bent along the fold line 17 with the stepped surface of 12 facing inward (FIG. 3), and then at the substantially central portion of this bent portion. All the layers are folded again along the second folding line 18 along the same folding side as the first to form a triple folding portion 19.
It is closed by applying a patch paper 20 that straddles so as to surround the heavy-folded portion 19, and by fixing each edge of the paper 20 to the outer wall surface with an adhesive 21 correspondingly. A tape 22 for unsealing or tearing the patch 20 is adhered to the inner surface of the patch 20 on the side where the bent portion is located.
この当て紙２０はその繊維の配向が主として袋本体１４
の幅方向に向くようにされている。このことは、一般に
袋本体１４はロール紙即ち巻き取り紙から連続的に形成
され、その際その長手方向（巻き取り方向）が袋本体１
４の縦方向に一致する。通常、巻き取り紙における繊維
の配向はその製造技術上主として巻き取り方向に向くの
で、単純に袋本体１４にフラップを形成してこのフラッ
プに開封用のテープを付け且つ折り曲げ部を包囲したと
してもその繊維の配向が開封用テープの伸長方向（袋本
体の幅方向）と直交してしまうので簡単に破くことはで
きない。そのため、上述の如き当て紙２０の存在が極め
て有効となる。この場合、別の巻き取り紙を繰り出して
その巻き方向に開封用テープを配置すると共にその巻き
方向を袋本体の幅方向に一致させて配置することにより
この種の当て紙２０の配置が容易となる。The orientation of the fibers of this backing paper 20 is mainly due to the bag body 14
It is designed to face the width direction. This means that in general, the bag body 14 is continuously formed from roll paper, that is, roll-up paper, the longitudinal direction (winding direction) of which is the bag body 1.
4 in the vertical direction. Usually, the orientation of the fibers in the paper roll is mainly oriented in the winding direction due to its manufacturing technique. Therefore, even if a flap is simply formed on the bag body 14 and an opening tape is attached to the flap and the folded portion is surrounded. Since the orientation of the fibers is orthogonal to the extension direction of the unsealing tape (width direction of the bag body), it cannot be easily broken. Therefore, the presence of the backing paper 20 as described above is extremely effective. In this case, another winding paper is fed out, the unsealing tape is arranged in the winding direction, and the winding direction is arranged so as to match the width direction of the bag body, whereby the arrangement of this kind of backing paper 20 is facilitated. Become.
このように底部が閉鎖された紙袋１０の口部は、従来の
階段切り紙袋の閉鎖部と同様に熱で再活性する主として
ホットメルト系接着剤２３が塗布されており、内容物の
充填後に内向きに折曲げ、袋本体１４の後壁に重ね合せ
て貼着して閉鎖される。The mouth of the paper bag 10 whose bottom is closed in this manner is coated with a hot-melt adhesive 23 that is reactivated by heat as in the case of the closed part of a conventional stair-cutting paper bag. The bag body 14 is bent in the opposite direction, and the bag body 14 is superposed on the rear wall of the bag body 14 to be attached and closed.
上述の如く構成された実施例の紙袋１０に口部から内容
物が充填されて該口部が前述の如く閉鎖された後、当該
紙袋１０から内容物を取出す際には紙袋１０の底部側を
上にして、開封用テープ２２を引き上げることによって
当て紙２０を幅方向に亘って直線状に引き破り、紙袋１
０の折曲部を延ばして元の真直ぐな状態に戻し、ここを
口として紙袋１０の中から内容物を取出す。After the contents are filled from the mouth of the paper bag 10 of the embodiment configured as described above and the mouth is closed as described above, when the contents are taken out from the paper bag 10, the bottom side of the paper bag 10 is closed. With the tape 22 for opening opened, the patch paper 20 is torn linearly in the width direction by pulling up the opening tape 22, and the paper bag 1
The bent portion of 0 is extended to restore the original straight state, and the contents are taken out from the paper bag 10 by using this as a mouth.
このように階段切り筒状体１１，１２の内部に直線切り
端部の筒状体１３を内層として配置し、この内層の筒状
体１３を底部側に所謂ずらした状態に位置決めし、この
底部を３重に折り曲げて当て紙２０で包囲固定すれば、
直線切りされた内層１３の端部が底部で共に折り曲げら
れるため、階段切り端部の紙袋であっても内容物がこの
ような構成の閉鎖部１６から漏れ出ることはまったくな
い。In this way, the tubular body 13 of the straight cut end is arranged as an inner layer inside the staircase cutting tubular bodies 11 and 12, and the tubular body 13 of this inner layer is positioned in a so-called shifted state on the bottom side, If you fold it in three layers and wrap it around with the paper 20,
Since the ends of the linearly cut inner layer 13 are bent together at the bottom, the contents never leak out of the closed portion 16 having such a structure even in the case of a paper bag having a step cut end.
なお、第１図ないし第４図に示された実施例の紙袋１０
では階段切り端部の筒状体が外層と中間層の２層であ
り、直線切り端部の筒状体が内層として１層であった
が、この層数に限定されるものではない。例えば階段切
り端部の筒状体を中間層として加えてもよいし、或いは
直線切り端部の筒状体をやはり中間層として加え内層の
筒状体を実質的に２重にしてもよい。また、これとは反
対に、直線切り端部の内層筒状体１３と階段切り端部の
外層筒状体１１の実質２層であってもよい。この例は第
２の実施例として第５図に図示されている。この第２の
実施例に係る紙袋２５において、底部閉鎖部１６は第１
の実施例で示された紙袋１０の場合とまったく同じ考え
方で構成されており、従って当該閉鎖部１６については
その説明を省略する。The paper bag 10 of the embodiment shown in FIGS.
In the above, the cylindrical body at the stair cut end was two layers, the outer layer and the intermediate layer, and the cylindrical body at the straight cut end was one layer as the inner layer, but the number of layers is not limited. For example, the tubular body at the stair cut end may be added as an intermediate layer, or the tubular body at the straight cut end may be added as an intermediate layer, and the tubular body at the inner layer may be substantially doubled. On the contrary, substantially two layers of the inner layer cylindrical body 13 at the straight cut end and the outer layer cylindrical body 11 at the step cut end may be provided. This example is shown in FIG. 5 as a second embodiment. In the paper bag 25 according to the second embodiment, the bottom closing portion 16 has the first
The paper bag 10 has the same concept as that of the paper bag 10 shown in the above embodiment, and therefore the description of the closing portion 16 will be omitted.
直線切り端部の内層筒状体１３と階段切り端部の外層筒
状体１１とからなる袋本体１４を備える第２の実施例の
紙袋２５においては、口部側の階段面が外層１１だけか
ら構成されるため、当該口部を閉鎖した時強度不足を生
ずるおそれがある。そのため、この紙袋２５では口部側
の端部において折り曲げ方向外側の外壁に第５図に示さ
れるように補助フラップ２６の一端が接着剤２７により
接着され、該補助フラップ２６の他端は外層筒状体１１
の長手方向外方の端縁より突出し、これにより実質的に
この補助フラップの突出端を含めて階段面とし、ここに
ホットメルト系接着剤２３を塗布することで口部閉鎖部
の強度不足を解消している。このような補助フラップ２
６は１枚に限らず、必要に応じて数枚設けてもよい。そ
の場合、複数の補助フラップ２６の他端はそれぞれ内側
の補助フラップに対して順次突出し、外層筒状体１１を
含めてそのすべてで階段面を形成するようにすることが
重要である。In the paper bag 25 of the second embodiment including the bag body 14 including the inner layer tubular body 13 having the straight cut end and the outer layer tubular body 11 having the stair cut end, only the outer layer 11 has the stair surface on the mouth side. Since it is composed of, the strength may be insufficient when the mouth is closed. Therefore, in this paper bag 25, one end of the auxiliary flap 26 is adhered by an adhesive 27 to the outer wall on the outer side in the folding direction at the end portion on the mouth side, and the other end of the auxiliary flap 26 is the outer layer cylinder. Form 11
Of the auxiliary flap, thereby forming a stepped surface substantially including the protruding end of the auxiliary flap, and applying the hot melt adhesive 23 to the step surface to reduce the strength of the mouth closing portion. It has disappeared. Such an auxiliary flap 2
The number of 6 is not limited to one, and several may be provided if necessary. In that case, it is important that the other ends of the plurality of auxiliary flaps 26 are sequentially projected to the inner auxiliary flaps, and all of them including the outer layer tubular body 11 form a stepped surface.
次に、第６図に示される本発明の第３の実施例に係る紙
袋３０について説明する。Next, a paper bag 30 according to the third embodiment of the present invention shown in FIG. 6 will be described.
第３の実施例の紙袋３０は、両端部を階段切りとした内
層の筒状体３１および中間層の筒状体３２と、両端部を
直線切りとした外層の筒状体３３とからなる袋本体３４
を含む。この袋本体３４において直線切り端部の外層筒
状体３３は、第１の実施例に係る紙袋１０の内層筒状体
１３と同じようにその口部側端縁３３ａが袋本体３４の
口部折線１５と袋本体３４の口部階段面における最下段
の端縁即ち中間層筒状体３２の長手方向内方側の端縁と
の間に位置するように他の階段切り端部の筒状体３１，
３２と組み合わされている。これにより、この袋本体３
４も直線切り端部の外層筒状体３３の底部端縁３３ｂは
他の階段切り端部の筒状体３１，３２の底部端縁よりも
長手方向外方に位置することとなる。The paper bag 30 of the third embodiment is a bag composed of an inner-layer tubular body 31 and an intermediate-layer tubular body 32 whose both ends are step-cut, and an outer-layer tubular body 33 whose both ends are linearly cut. Body 34
including. In the bag main body 34, the outer layer tubular body 33 having a straight line cut end has the mouth side end edge 33 a of the bag main body 34 in the same manner as the inner layer tubular body 13 of the paper bag 10 according to the first embodiment. The tubular shape of the other stair cut end is positioned so as to be located between the folding line 15 and the lowermost end edge of the stair surface of the mouth portion of the bag body 34, that is, the inner edge of the intermediate layer tubular body 32 in the longitudinal direction. Body 31,
It is combined with 32. As a result, this bag body 3
Also in 4, the bottom end edge 33b of the outer layer tubular body 33 at the straight cut end portion is located more outward in the longitudinal direction than the bottom end edges of the tubular bodies 31 and 32 at the other stair cut end portions.
そこで、この袋本体３４の底部を折り曲げて閉鎖するの
であるが、この閉鎖方法は第１の実施例に係る紙袋１０
と同様に階段面を内向きにして袋本体３４の端部全体を
折線１７に沿って折曲げ、その後この折曲げ部のほぼ中
央部に沿う第２の折線１８で最初と同じ折り曲げ側に全
層を再度折り曲げて３重折り曲げ部３５を形成し、この
３重折曲げ部３５を包囲するように跨がる開封用テープ
２２付き当て紙２０を当て、該当て紙２０の各縁部を外
壁面に接着剤２１で固着することによりなされている。Therefore, the bottom portion of the bag body 34 is bent and closed. This closing method is the paper bag 10 according to the first embodiment.
Similarly, the entire end of the bag body 34 is bent along the fold line 17 with the staircase surface facing inward, and then the second fold line 18 extending substantially along the center of the fold line is entirely bent to the same fold side as at the beginning. The layer is bent again to form the triple folding part 35, and the patch paper 20 with the unsealing tape 22 straddling so as to surround the triple folding part 35 is applied, and each edge of the paper 20 is removed. It is made by adhering to the wall surface with an adhesive 21.
このように底部が閉鎖された紙袋３０の口部において、
第２の実施例の紙袋２５と同じように補助フラップ３６
が袋本体３４の口部側階段面裏側に取付けられている。
しかし、この補助フラップ３６の設置の目的は第２の実
施例の紙袋２５の場合のように階段面による口部側閉鎖
部の強度不足を補うためではなく、口部の閉鎖を完全な
ものとするためである。すなわち、この補助フラップ３
６がもしないとすると、口部側の端部を折線１５に沿っ
て折り曲げると階段面の裏側に外層筒状体３３の一方の
端縁が露出したままとなって中間層筒状体３２との間が
開放状態となってしまう。そのため、外層筒状体３３の
片面側開放状態の発生を防ぐ意味で補助フラップ３６が
必要となる。換言すれば、このような補助フラップ３６
を設ければ、外層筒状体の両端を直線切りとして、その
配置を上述したようにすることによっても、本発明の目
的を達成することができる。At the mouth of the paper bag 30 whose bottom is closed,
As with the paper bag 25 of the second embodiment, the auxiliary flap 36 is used.
Is attached to the back side of the stair surface on the mouth side of the bag body 34.
However, the purpose of installing the auxiliary flap 36 is not to make up for the insufficient strength of the mouth side closing portion due to the stairs as in the case of the paper bag 25 of the second embodiment, but to completely close the mouth portion. This is because That is, this auxiliary flap 3
If 6 does not exist, when the end portion on the mouth side is bent along the folding line 15, one end edge of the outer layer tubular body 33 remains exposed on the back side of the step surface and the intermediate layer tubular body 32. The space between them becomes open. Therefore, the auxiliary flap 36 is necessary to prevent the one-side open state of the outer tubular body 33 from occurring. In other words, such an auxiliary flap 36
If the above is provided, the object of the present invention can be achieved also by cutting both ends of the outer layer tubular body into straight lines and arranging them as described above.
なお、前述した各実施例の紙袋を示す第２図ないし第７
図において、符号３７は口部階段端が折り曲げ接着され
る位置での接着部の強度を高めるため外層と内方の隣接
層とを相互に接着する接着部（袋本体の幅方向に間隔を
あけて塗布された線状の接着部）を示し、又符号３８は
各層間の適所に入れられ、各層を接合する接着剤をそれ
ぞれ示している。Incidentally, FIGS. 2 to 7 showing the paper bag of each of the above-mentioned embodiments.
In the figure, reference numeral 37 is an adhesive part (an interval is provided in the width direction of the bag body) for adhering the outer layer and the inner adjacent layer to each other in order to enhance the strength of the adhesive part at the position where the staircase end of the mouth is bent and adhered. Applied linearly) and the reference numeral 38 indicates an adhesive which is put in a proper place between the respective layers and joins the respective layers.
（発明の効果） 以上説明したように、本発明の紙袋によれば、現在既に
使用されている閉鎖機械（トップシーラー）をそのまま
利用可能な階段状口部の構造を変えることなく開封容易
で漏れがなく且つ製造コストの上昇を招かずしかも非常
にコンパクトで取扱い性のよい底部閉鎖部を形成するこ
とができる。(Effects of the Invention) As described above, according to the paper bag of the present invention, the closing machine (top sealer) which is already used at present can be used as it is without any change in the structure of the staircase-like mouth portion, and the leak can be easily opened. It is possible to form a bottom closure which is extremely compact and easy to handle without any increase in manufacturing cost.
第１図は本発明の第１の実施例に係る紙袋を構成する袋
本体の平面図、第２図は第１図のII−II線に沿って得た
前記袋本体の概略的な断面図、第３図は第２図に示され
た袋本体を紙袋に形成すべく底部の端部を１度折り曲げ
た状態で示す第２図と同様な概略的な断面図、第４図は
本発明の第１の実施例に係る紙袋を示す概略的な断面
図、第５図は本発明の第２の実施例に係る紙袋を示す概
略的な断面図、第６図は本発明の第３の実施例に係る紙
袋を構成する袋本体を示す概略的な断面図、第７図は本
発明の第３の実施例に係る紙袋を示す概略的な断面図で
ある。 １０，２５，３０……紙袋、１１……外層筒状体、１２
……中間層筒状体、１３……内層、１３ａ，１３ｂ……
内層筒状体の端縁、１４，３４……袋本体、１５，１
７，１８……折線、１９，３５……３重折曲げ部、２０
……当て紙、２２……開封用テープ、２３……ホットメ
ルト系接着剤、２６，３６……補助フラップ。FIG. 1 is a plan view of a bag body constituting a paper bag according to a first embodiment of the present invention, and FIG. 2 is a schematic sectional view of the bag body taken along line II-II in FIG. 3 is a schematic sectional view similar to FIG. 2 in which the end of the bottom portion is bent once to form the bag body shown in FIG. 2 into a paper bag, and FIG. Is a schematic sectional view showing a paper bag according to a first embodiment of the present invention, FIG. 5 is a schematic sectional view showing a paper bag according to a second embodiment of the present invention, and FIG. 6 is a third embodiment of the present invention. FIG. 7 is a schematic sectional view showing a bag body constituting a paper bag according to an embodiment, and FIG. 7 is a schematic sectional view showing a paper bag according to a third embodiment of the present invention. 10, 25, 30 ... Paper bag, 11 ... Outer layer tubular body, 12
...... Intermediate layer tubular body, 13 ...... Inner layer, 13a, 13b ......
Edges of inner layer tubular body, 14, 34 ... Bag body, 15, 1
7, 18 ... Folding line, 19, 35 ... Triple folding part, 20
...... Reliable paper, 22 …… Opening tape, 23 …… Hot melt adhesive, 26,36 …… Auxiliary flap.
Claims (3)
端部を階段切りとした少なくとも外層の筒状体とを備え
る襞付の袋本体であって前記内層筒状体の一端部である
口部側の端縁が前記袋本体の口部折線より長手方向外側
にあって且つ前記袋本体の口部内に隠れるように位置す
べく他の層に対して長手方向にずらして組合わされた襞
付の袋本体と、該袋本体の他端部である底部側を階段面
が内側に折り込まれるように１度折り曲げ、更に該折曲
げ部のほぼ中央部を最初と同じ側に折曲げて３重折曲げ
部とし、該３重折曲げ部を包囲するように開封用テープ
付きの当て紙を跨いで当てた内容物取出しのための開封
口となる閉鎖部と、前記袋本体の前記階段状口部に塗布
されたホットメルト系接着剤とを含んでなる紙袋。1. A foldable bag main body comprising a tubular body of an inner layer whose both ends are cut straight and a tubular body of at least an outer layer whose both ends are step-cut, wherein one end of the inner tubular body is formed. The mouth side edge of the bag is longitudinally outside the mouth fold line of the bag body, and is combined with the other layers in a longitudinal direction so as to be hidden in the mouth of the bag body. Fold the bag body with folds and the bottom side, which is the other end of the bag body, once so that the staircase surface is folded inward, and further bend the approximately central portion of the bent portion to the same side as the first. To form a triple-folded portion, and a closing portion that serves as an opening for taking out the content by straddling a patch paper with an opening tape so as to surround the triple-folded portion, and the bag body described above. A paper bag comprising a hot melt adhesive applied to the stepped mouth portion.
た少なくとも１枚の中間層の筒状体を更に備えているこ
とを特徴とする第１項記載の紙袋。2. The paper bag according to claim 1, wherein the foldable bag body further comprises at least one intermediate layer tubular body having both ends cut in steps.
端部を階段切りとした少なくとも内層の筒状体とを備え
る襞付の袋本体であって前記外層筒状体の一端部である
口部側の端縁が前記袋本体の口部折線と該外層筒状体口
部端縁を除く前記袋本体口部の最も長手方向内方寄りの
端縁との間に位置すべく他の層に対して長手方向にずら
して組合わされた襞付の袋本体と、該袋本体の他端部で
ある底部側を階段面が内側に折り込まれるように１度折
り曲げ、更に該折曲げ部のほぼ中央部を最初と同じ側に
折曲げて３重折曲げ部とし、該３重折曲げ部を包囲する
ように開封用テープ付きの当て紙を跨いで当てた内容物
取出しのための開封口となる閉鎖部と、前記袋本体の口
部側階段面裏側に配置され、前記外層の筒状体口部側端
縁に一端が固着され、他端が前記袋本体口部の最も長手
方向外方の端縁より突出した補助フラップと、該補助フ
ラップの突出部を含んで前記袋本体で形成される口部階
段面に塗布されたホットメルト系接着剤とを含んでなる
紙袋。3. A foldable bag body comprising a tubular body of an outer layer whose both ends are cut straight and a tubular body of at least an inner layer whose both ends are step-cut, wherein one end of the tubular outer layer is formed. The edge on the mouth side is located between the mouth fold line of the bag body and the edge of the mouth of the bag body other than the mouth edge of the outer layer tubular body that is closest to the inner side in the longitudinal direction. A foldable bag body combined with the other layers by shifting in the longitudinal direction, and the bottom side, which is the other end of the bag body, is bent once so that the step surface is folded inward, and then further folded. For removing the contents, the substantially central part of the part is bent to the same side as the beginning to form a triple-folded part, and the triple-folded part is surrounded by a patch paper with an opening tape. The closing part to be an opening and the back side of the stairway side of the mouth of the bag body are arranged, and one end of the outer layer is fixed to the end of the tubular body on the mouth side. , An auxiliary flap having the other end protruding from the outermost edge of the mouth of the bag body in the longitudinal direction, and a hot applied to the staircase surface of the mouth formed by the bag body including the protruding portion of the auxiliary flap. A paper bag containing a melt adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24376190A JPH0637217B2 (en) | 1990-09-17 | 1990-09-17 | Paper bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24376190A JPH0637217B2 (en) | 1990-09-17 | 1990-09-17 | Paper bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04128140A JPH04128140A (en) | 1992-04-28 |
| JPH0637217B2 true JPH0637217B2 (en) | 1994-05-18 |
Family
ID=17108594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24376190A Expired - Fee Related JPH0637217B2 (en) | 1990-09-17 | 1990-09-17 | Paper bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637217B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0614043U (en) * | 1992-07-24 | 1994-02-22 | 行男 佐藤 | Large paper bag |
| JP2007030932A (en) * | 2005-07-27 | 2007-02-08 | Miyoshi Oil & Fat Co Ltd | Easily openable bag |
| JP6323944B2 (en) * | 2014-02-20 | 2018-05-16 | 石川株式会社 | Breathable multilayer paper bag for easy opening |
| CN107826436A (en) * | 2017-11-14 | 2018-03-23 | 常熟市鑫盛制袋有限责任公司 | A kind of trapezoidal bag |
| CN109160069B (en) * | 2018-09-03 | 2019-10-18 | 石家庄康益包装有限公司 | Packaging bag and packaging bag production technology |
| JP7347898B2 (en) * | 2018-09-27 | 2023-09-20 | 北興化学工業株式会社 | Packaging bags for agricultural chemicals and packaging methods for agricultural chemicals |
-
1990
- 1990-09-17 JP JP24376190A patent/JPH0637217B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04128140A (en) | 1992-04-28 |
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