JPH09286471A - Packaging bag - Google Patents
Packaging bagInfo
- Publication number
- JPH09286471A JPH09286471A JP8068355A JP6835596A JPH09286471A JP H09286471 A JPH09286471 A JP H09286471A JP 8068355 A JP8068355 A JP 8068355A JP 6835596 A JP6835596 A JP 6835596A JP H09286471 A JPH09286471 A JP H09286471A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- heat
- bag
- width
- layer
- 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.)
- Pending
Links
Landscapes
- Bag Frames (AREA)
- Packages (AREA)
- Package Specialized In Special Use (AREA)
Abstract
Description
【0001】[0001]
【発明の技術分野】この発明は、電子レンジ等によって
加熱又は調理の際に生ずる内圧増加があっても破裂する
ことのない包装袋に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag which does not burst even if there is an increase in internal pressure caused by heating or cooking by a microwave oven or the like.
【0002】[0002]
【従来の技術】袋によって包装された食品等の内容物を
電子レンジで加熱又は調理を行なう際、内圧上昇のため
内圧を逃がす必要がある。2. Description of the Related Art When heating or cooking contents such as food packed in a bag with a microwave oven, it is necessary to release the internal pressure due to an increase in the internal pressure.
【0003】現在は、手やハサミあるいはナイフ等で袋
の一部を切り、内圧の逃げ口を作成して、加熱調理を行
っているが、この操作を忘れて加熱、調理すると袋が破
裂してしまう危険がある。At present, cooking is performed by cutting a part of the bag with hands, scissors, a knife, or the like to create a relief hole for internal pressure, but if this operation is forgotten, heating and cooking will cause the bag to burst. There is a danger of
【0004】そのため、袋の包装袋を形成する積層シー
トの最内層の熱接着フィルムにスリットを設けておき、
その部分にフィルムを積層するために用いる接着剤を塗
付しないで貼合せ、そこを内圧の逃げ口としている袋が
考案されているが、袋内外の密閉性に問題がある。Therefore, slits are provided in the innermost heat-bonding film of the laminated sheet forming the bag packaging bag,
A bag has been devised in which the adhesive used for laminating the film is applied without being applied to the portion, and the bag is used as an escape port for internal pressure. However, there is a problem with the airtightness inside and outside the bag.
【0005】また、袋に弁を設け、内圧上昇によって弁
が開き内圧を逃がす構造の袋も考案されているが、別工
程で弁を取り付けなければならず、弁自身も複雑な構造
であるため、コストが高くなる問題がある。[0005] In addition, a bag having a structure in which a valve is provided in the bag and the valve opens to release the internal pressure when the internal pressure rises has been devised. However, the valve itself must be mounted in a separate process, and the valve itself has a complicated structure. However, there is a problem that the cost increases.
【0006】[0006]
【発明の課題】そこで、この発明の課題は、電子レンジ
によって加熱又は調理を行なう際に、袋内の内圧上昇に
よって破裂し内容物が飛散するようなことがない包装袋
を提供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a packaging bag which does not rupture due to an increase in the internal pressure in the bag and the contents thereof are scattered during heating or cooking with a microwave oven. .
【0007】[0007]
【課題の解決手段】上記の課題を解決するため、この発
明においては、熱封緘によって形成される密封包装袋の
自然開封予定熱封緘部に、この熱封緘部の熱封緘層と熱
融着可能な熱接着層をそれぞれ最外層に有し、かつこれ
らの層間を手で剥離できる程度の接着力に調整した易剥
離テープを、袋本体の内容物収納部側に突出させて熱融
着し、この易剥離テープの内端から巾方向に分離部を設
け、この分離部の巾を前記テープの突出部の巾以上にし
たのである。In order to solve the above-mentioned problems, in the present invention, a heat-sealing layer of the heat-sealing portion can be heat-sealed to the heat-sealing portion of the hermetically sealed packaging bag to be opened naturally. A heat-adhesive layer each having an outermost layer, and an easily peelable tape adjusted to have an adhesive strength such that these layers can be peeled by hand, and heat-sealed by protruding to the contents storage portion side of the bag body, A separation portion is provided in the width direction from the inner end of the easy peeling tape, and the width of the separation portion is set to be larger than the width of the protruding portion of the tape.
【0008】前記易剥離テープの突出部の巾を、テープ
の一面と他面とで異ならせ、前記分離部の巾を小なる突
出部の巾以上にしてもよい。The width of the protruding portion of the easily peelable tape may be different on one surface and the other surface of the tape, and the width of the separating portion may be equal to or larger than the width of the smaller protruding portion.
【0009】また、易剥離テープの端部に切欠きを設け
ることができる。Further, a notch can be provided at the end of the easily peelable tape.
【0010】前記易剥離テープの挿入個所は任意であ
る。The insertion point of the easily peelable tape is arbitrary.
【0011】上述のように、易剥離テープを内容物収納
部の内側に突出させてあるので、包装袋の落下時等の衝
撃にも十分に耐える密封性を有し、電子レンジ等の加熱
による急激な内圧上昇時には、前記分離部から易剥離テ
ープが自然開封して内圧を逃がすことができる。As described above, since the easily peelable tape is projected to the inside of the contents storage portion, it has sufficient sealing property to withstand the impact when the packaging bag is dropped, and is heated by a microwave oven or the like. When the internal pressure rises abruptly, the easily peelable tape spontaneously opens from the separating portion to allow the internal pressure to escape.
【0012】[0012]
【実施の形態】以下、この発明の実施形態を添付図面に
基づいて説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【0013】図1は包装袋1の正面図であり、熱封緘部
2により、内容物3が密封収納されている。そして、部
分Aにおいては、易剥離テープ4の熱接着層(後述)と
袋本体1の熱封緘層とによって、熱封緘部2aが形成さ
れている。FIG. 1 is a front view of a packaging bag 1 in which a heat sealing section 2 hermetically stores contents 3. In the part A, the heat sealing portion 2 a is formed by the heat bonding layer (described later) of the easy-peeling tape 4 and the heat sealing layer of the bag body 1.
【0014】図2及び図3は、図1のI−I線に沿った
熱封緘部の縦断面図である。図示のように、易剥離テー
プ4が、袋本体1を形成する積層シート5の間に熱融着
により挿入されている。2 and 3 are longitudinal sectional views of the heat-sealing portion taken along the line II of FIG. As shown, the easy-peeling tape 4 is inserted between the laminated sheets 5 forming the bag body 1 by heat fusion.
【0015】易剥離テープ4は、図2乃至図4に示すよ
うに、袋本体1の積層シート5と熱融着するための層4
1、42が易剥離接着層43により積層されたものであ
る。層41、42の基材411、421には、ポリエス
テル、ナイロン(商品名)、ポリプロピレン、ポリエチ
レンなどが好適であり、それらの単体、複合体のいずれ
であってもよい。また、熱接着層412、422として
は袋本体1の熱封緘層52と熱融着し得る樹脂、例えば
ポリエチレン、ポリプロピレンなどのポリオレフィン、
エチレン−酢酸ビニル共重合体、ポリエステル共重合
体、ポリアミドなどが用いられる。なお、基材411、
421自体が、袋本体1の積層シート5との熱融着性を
有すれば、熱接着層412、422は省略することがで
きる。また、基材411、421と熱接着層412、4
22との間に印刷層、着色層などを設けておくことがで
きる。As shown in FIGS. 2 to 4, the easily peelable tape 4 is a layer 4 for heat-sealing with the laminated sheet 5 of the bag body 1.
Reference numerals 1 and 42 are laminated by an easily peelable adhesive layer 43. The base materials 411 and 421 of the layers 41 and 42 are preferably made of polyester, nylon (trade name), polypropylene, polyethylene, or the like, and may be a simple substance or a composite thereof. As the heat-bonding layers 412 and 422, a resin that can be heat-sealed to the heat-sealing layer 52 of the bag body 1, for example, polyolefin such as polyethylene or polypropylene,
Ethylene-vinyl acetate copolymer, polyester copolymer, polyamide and the like are used. The base material 411,
As long as 421 itself has a heat fusion property with the laminated sheet 5 of the bag body 1, the thermal adhesive layers 412 and 422 can be omitted. In addition, the base materials 411 and 421 and the thermal bonding layers 412 and 4
A printing layer, a coloring layer, and the like can be provided between the first and second layers.
【0016】前記易剥離接着層43は、樹脂層431と
接着剤層432より成り、樹脂層431は、比較的接着
強度の弱い、例えばビニル樹脂やウレタン樹脂、アクリ
ル樹脂やポリアミド樹脂、シリコーン樹脂などの単体或
は混合物から成り、この樹脂のパートコートによって形
成されたものであって、そのパターンの一例は、図5
(イ)、(ロ)、(ハ)に示すように、コートしない部
分が例えば点状、線状、格子状などの模様を形成してい
る。The easily peelable adhesive layer 43 comprises a resin layer 431 and an adhesive layer 432, and the resin layer 431 has relatively weak adhesive strength, such as vinyl resin, urethane resin, acrylic resin, polyamide resin, silicone resin, etc. Which is formed by a part coat of this resin, and an example of the pattern is shown in FIG.
As shown in (a), (b), and (c), the uncoated portion forms, for example, a dot, line, or lattice pattern.
【0017】前記接着剤層432は、レトルト殺菌処理
を施す場合には、接着強度の低下が小さい接着剤を使用
することが望ましい。その様な接着剤としては、公知の
ポリオール成分とイソシアネート成分の反応物を生成し
得る2液硬化型ウレタン系ドライラミネート用接着剤が
ある。勿論、他の接着剤を用いてもよいが、弱い接着力
で足りる場合には、塩化ビニル、酢酸ビニル、共重合体
樹脂、ポリエチレン樹脂、ポリプロピレン樹脂、線状ポ
リエステル樹脂などのイージーピール性を有する樹脂を
用いてもよい。When the retort sterilization treatment is performed, it is desirable that the adhesive layer 432 is made of an adhesive that causes a small decrease in adhesive strength. As such an adhesive, there is a known two-component curable urethane-based dry laminating adhesive capable of producing a reaction product of a polyol component and an isocyanate component. Of course, other adhesives may be used, but if weak adhesive strength is sufficient, it has easy peel properties such as vinyl chloride, vinyl acetate, copolymer resin, polyethylene resin, polypropylene resin, and linear polyester resin. A resin may be used.
【0018】また、基材411、421としてポリエス
テル共重合体、ポリエチレンやポリプロピレンなどのポ
リオレフィン、エチレン一酢酸ビニル共重合体などの強
接着性のあるフィルムを使用する場合は、接着剤層43
2を省略することができる。When a film having strong adhesiveness such as polyester copolymer, polyolefin such as polyethylene or polypropylene, or ethylene-vinyl acetate copolymer is used as the base materials 411 and 421, the adhesive layer 43 is used.
2 can be omitted.
【0019】図6に示すように、前記樹脂層431と同
様の樹脂層433を接着剤層432の反対側にも設ける
ことができる。As shown in FIG. 6, a resin layer 433 similar to the resin layer 431 can be provided on the opposite side of the adhesive layer 432.
【0020】図7及び図8は易剥離テープ4の他の例を
示したものである。図7は易剥離テープ4を合成樹脂の
共押出しにより形成したものであり、層41と43の層
間接着力、層42と43の層間接着力、或は層43の凝
集力のうち、少なくとも一つが弱くなるように樹脂を選
択する。7 and 8 show another example of the easily peelable tape 4. FIG. 7 shows an easily peelable tape 4 formed by coextrusion of a synthetic resin, and at least one of the interlayer adhesive force of the layers 41 and 43, the interlayer adhesive force of the layers 42 and 43, or the cohesive force of the layer 43. Choose the resin so that it is weaker.
【0021】図8は、層41、42、43の単体を熱接
着法により積層し、易剥離テープ4を形成したものであ
る。図7の場合と同じく、層41と43の層間接着力、
層42と43の層間接着力、或は層43の凝集力のう
ち、少なくとも一つが弱くなるように樹脂を選択する。
また、層41と43、或は層42と43とを接着剤によ
る接着法或は共押出し法などで積層しておき、その後、
熱接着法により層42、或は層41と積層しても差し支
えない。FIG. 8 shows the easily peelable tape 4 formed by laminating the layers 41, 42 and 43 alone by a thermal bonding method. As in the case of FIG. 7, the interlayer adhesive force between layers 41 and 43,
The resin is selected so that at least one of the adhesive force between layers 42 and 43 or the cohesive force of layer 43 is weakened.
Also, the layers 41 and 43 or the layers 42 and 43 are laminated by an adhesive method using an adhesive or a co-extrusion method, and then,
The layer 42 or the layer 41 may be laminated by a heat bonding method.
【0022】さらに、易剥離テープ4をあらかじめ製作
せずに、材料41、42、43を準備し、製袋時に挿
入、熱接着することも可能である。Further, it is also possible to prepare the materials 41, 42 and 43 without inserting the easy peeling tape 4 in advance, and insert and heat bond the materials 41, 42 and 43 at the time of bag making.
【0023】次に、前記易剥離テープ4には、図2、図
3、図4、図6、図7、図8に示すように、分離部43
a、即ち層42と層43が接合していない部分がテープ
4の巾方向に全長にわたって形成されている。この分離
部43aを形成するには、図2、図4、図6、図7のよ
うに、予め易剥離接着層43を介して層42と全面貼り
合せた後、分離部43aのみをテープ4の巾方向に全長
にわたって剥離する方法、或はテープ4を形成する際に
分離部43aに対応する部分を圧着しない方法、図3及
び図8のように、分離部43aに対応する部分のみ易剥
離接着層43を設けない(除去する)方法がある。Next, as shown in FIG. 2, FIG. 3, FIG. 4, FIG. 6, FIG. 7, and FIG.
a, that is, the portion where the layer 42 and the layer 43 are not joined is formed over the entire length of the tape 4 in the width direction. In order to form the separating portion 43a, as shown in FIGS. 2, 4, 6, and 7, after the entire surface is previously bonded to the layer 42 via the easy peeling adhesive layer 43, only the separating portion 43a is taped. Of the entire length in the width direction of the tape, or a method of not pressing the portion corresponding to the separating portion 43a when forming the tape 4, as shown in FIGS. 3 and 8, only the portion corresponding to the separating portion 43a is easily peeled off. There is a method of not providing (removing) the adhesive layer 43.
【0024】前記袋本体1は、図2、図3及び図9に示
すように、基材51と熱封緘層52との積層シートより
成る。基材51は、表面保護層511、ガスバリヤー層
512、補強層513を積層したものであり、印刷層や
着色層を適宜設けることができる。また、用途によって
はこれに限られる訳ではなく、例えば、ガスバリヤー層
512のないもの、或は補強層513がない構成なども
あり得る。さらに、層512と513の位置がかわって
いてもよい。熱封緘層52としては、ポリオレフィン、
エチレン−酢酸ビニル共重合体などが用いられるが、こ
れに限られる訳ではなく、要は、易剥離テープ4の熱接
着層412、422と熱融着(強接着)可能であればよ
い。なお、基材51が、熱接着層412、422との熱
融着性を有すれば、この層52は省略することができ
る。As shown in FIGS. 2, 3 and 9, the bag body 1 is composed of a laminated sheet of a base material 51 and a heat sealing layer 52. The base material 51 is obtained by laminating a surface protective layer 511, a gas barrier layer 512, and a reinforcing layer 513, and a printing layer and a coloring layer can be appropriately provided. Further, the present invention is not limited to this depending on the application, and for example, there may be a configuration without the gas barrier layer 512 or a configuration without the reinforcing layer 513. Further, the positions of layers 512 and 513 may be interchanged. As the heat sealing layer 52, a polyolefin,
Although an ethylene-vinyl acetate copolymer or the like is used, the present invention is not limited to this, and the point is that it can be heat-bonded (strongly adhered) to the heat-bonding layers 412 and 422 of the easily peelable tape 4. If the base material 51 has a heat fusion property with the thermal adhesive layers 412 and 422, this layer 52 can be omitted.
【0025】上記のような袋本体1の開口部に、前記テ
ープ4を介在させたとき、図2及び図3に示すように、
袋内部にテープ4が一定巾だけ突出するように配置す
る。このとき、図2に示すように、分離部43aの巾a
は、a≧b>0となるようにしておく。このように、テ
ープ4を袋内に突出させることによって、取り扱い中の
衝撃その他による内圧がテープ介在部に加わっても、テ
ープ4の突出部の基部B(図2)に加圧力が集中し、こ
の部分は袋1と強く接着されているため、テープ4の易
剥離接着層43が剥離を起こすことはない。When the tape 4 is interposed in the opening of the bag body 1 as described above, as shown in FIGS. 2 and 3,
The tape 4 is arranged so as to protrude by a fixed width inside the bag. At this time, as shown in FIG.
Is set so that a ≧ b> 0. In this way, by projecting the tape 4 into the bag, even if internal pressure due to impact or the like during handling is applied to the tape intervening portion, the pressure is concentrated on the base portion B (FIG. 2) of the protruding portion of the tape 4, Since this portion is strongly bonded to the bag 1, the easily peelable adhesive layer 43 of the tape 4 does not peel off.
【0026】さらに、図3に示すように、易剥離テープ
4の一面と他面で突出部の巾を異ならせてもよい。図示
の場合、b1 <b2 であり、分離部aとの関係は、a≧
b1であればよい。従ってa≦b2 の場合もありa>b
2 の場合もある。このように突出巾を異ならせると、耐
圧性、耐衝撃性がさらに向上する。Further, as shown in FIG. 3, the width of the protruding portion may be different on one surface and the other surface of the easy peeling tape 4. In the case shown in the drawing, b 1 <b 2 , and the relationship with the separation part a is a ≧ a.
It may be b 1 . Therefore, in some cases, a ≦ b 2 and a> b
It may be 2 . By making the protrusion widths different in this way, the pressure resistance and impact resistance are further improved.
【0027】しかしながら、電子レンジによる加熱で内
圧が大きく増加する場合には、分離部43aに働く加圧
力が増大し、分離部43aから易剥離接着層43が剥離
を起こし、層41と42が分離する。上記分離部43a
の巾aを突出部の巾b又はb1 以上としかつこれらの巾
a、b、b1 、b2 を適当に選択することによって、内
圧増加による自然開封を容易にし、かつ耐圧性のコント
ロールも容易に行なうことができる。However, when the internal pressure is greatly increased by heating by the microwave oven, the pressure applied to the separating portion 43a increases, the peelable adhesive layer 43 peels from the separating portion 43a, and the layers 41 and 42 are separated. To do. The separating section 43a
The width a of the protrusion is equal to or larger than the width b or b 1 of the protruding portion and the widths a, b, b 1 and b 2 are appropriately selected to facilitate natural opening due to an increase in internal pressure and control the pressure resistance. It can be done easily.
【0028】前記テープ4は、図1に示す配置ばかりで
なく、種々の配置で介在させることができる。図1の場
合は、袋本体の上端部の全巾にわたってテープ4を固着
してある。この場合に、図3や図8に示すような分離部
43aに接着層43の無いテープ4を用いると、袋本体
1の側縁部まで分離部43aが延びているため、気密性
が保たれない。そこで例えば図10及び図11に示すよ
うに、開口部の側縁部は袋本体1の積層シート5を互に
直接ヒートシールして熱封緘部2を形成し(所謂三方シ
ール)、熱封緘部2以外の部分にテープ4を介在させる
のがよい。図中、符号2aは、テープ4とシート5との
熱封緘部である。The tape 4 can be interposed not only in the arrangement shown in FIG. 1 but also in various arrangements. In the case of FIG. 1, the tape 4 is fixed over the entire width of the upper end of the bag body. In this case, when the tape 4 without the adhesive layer 43 is used for the separating portion 43a as shown in FIGS. 3 and 8, since the separating portion 43a extends to the side edge portion of the bag body 1, airtightness is maintained. Absent. Therefore, for example, as shown in FIGS. 10 and 11, the side edge portions of the opening are directly heat-sealed together to form the heat-sealing portion 2 (so-called three-way sealing), and the heat-sealing portion is formed. It is preferable to interpose the tape 4 on a portion other than 2. In the figure, reference numeral 2a is a heat-sealing portion between the tape 4 and the sheet 5.
【0029】また、図12及び図13に示すように、袋
本体1の全周に熱封緘部2を形成し(所謂四方シー
ル)、テープ4は、上端部の熱封緘部2の直下に介在さ
せてもよい。この場合は、適宜個所にノッチ6等を設け
ておく必要がある。テープ4が内圧増加によって分離し
ても、内圧の逃げ口がないからである。また、内容物を
取り出すためには、別途開封を行なう必要がある。この
開封のためにノッチ6を用いてもよいが、開封用ノッチ
9を形成しておいてもよい。Further, as shown in FIGS. 12 and 13, a heat-sealing portion 2 is formed on the entire circumference of the bag body 1 (so-called four-sided seal), and the tape 4 is interposed immediately below the heat-sealing portion 2 at the upper end. You may let me. In this case, it is necessary to provide the notch 6 or the like at an appropriate place. This is because there is no escape hole for the internal pressure even if the tape 4 separates due to an increase in the internal pressure. Further, in order to take out the contents, it is necessary to separately open the package. The notch 6 may be used for this opening, but the notch 9 for opening may be formed.
【0030】図14及び図15に示すように、袋本体1
の上端部は、シート5を互に直接ヒートシールして、そ
の直下に上記と同様にテープ4を介在させ、かつそのテ
ープ4を両側縁まで延ばしてもよい。この場合は内圧逃
げ口用のノッチ6等を形成しておく必要はない。テープ
4が内圧増加によって分離すれば、テープ4の両端から
内圧を逃がすことができるからである。しかしながら、
内容物取り出し用の開口は、袋を破断したり切断して形
成する必要がある。As shown in FIGS. 14 and 15, the bag body 1
The upper ends of the sheets may be directly heat-sealed to each other, the tape 4 may be interposed directly below the sheets, and the tape 4 may be extended to both side edges. In this case, it is not necessary to form the notch 6 or the like for the internal pressure escape port. This is because if the tape 4 is separated by increasing the internal pressure, the internal pressure can be released from both ends of the tape 4. However,
The opening for taking out the contents needs to be formed by breaking or cutting the bag.
【0031】図16及び図17に示すように、袋本体1
の上端部から離れた位置にテープ4を介在させてもよ
い。図示の場合、テープ4は、図11と同様に、袋本体
1の両側の熱封緘部2を残して中間部分にのみ挿入され
ている。この場合にも、内圧の逃げ口としてノッチ6や
切り目7或はミシン目8を設けておく必要がある。この
ミシン目8は、開封口を形成するための破断線として利
用することができる。As shown in FIGS. 16 and 17, the bag body 1
The tape 4 may be provided at a position apart from the upper end of the tape. In the case shown in the drawing, the tape 4 is inserted only in the intermediate portion of the bag body 1 except for the heat-sealing portions 2 as in FIG. Also in this case, it is necessary to provide the notch 6, the cut 7 or the perforation 8 as an escape port for the internal pressure. This perforation 8 can be used as a break line for forming an opening.
【0032】また、テープ4より上部には、必要に応じ
て、調味料の小袋などを収納しておくことができる。If desired, a sachet of seasoning or the like can be stored above the tape 4.
【0033】図18は、図16、17の袋本体1とほと
んど同じ構造であるが、テープ4を袋1の両側縁まで延
ばして挿入したものである。この場合、内圧の逃げ口を
特別に設ける必要はないが、内圧の逃げ口としてのノッ
チ6やミシン目8を併用してもよい。勿論これらのノッ
チ6やミシン目8は開封口を形成するのにも役立つ。FIG. 18 has almost the same structure as the bag body 1 of FIGS. 16 and 17, but the tape 4 is inserted by extending it to both side edges of the bag 1. In this case, it is not necessary to specially provide an escape port for the internal pressure, but the notch 6 or the perforation 8 as the escape port for the internal pressure may be used together. Of course, these notches 6 and perforations 8 also serve to form an opening.
【0034】図14及び図18に示す場合には、分離部
43aに接着剤層43が無いタイプのテープ4を用いる
ことができないことは前述の通りである。そこで図19
に示すように、テープ4の両端に、任意形状の切欠き4
a、4aを形成し、その部分のみ直接袋本体1のシート
5を互にヒートシールして熱封緘部2bを形成する。内
圧が増加した場合は、熱封緘部2b以外の部分4b(切
欠き4a以外の部分)から逃がすことができる。この切
欠き以外の部分4bの大きさを適当に選択することによ
って、内圧を徐々に逃がすようにすれば、収納物が例え
ば米飯の場合、蒸らし効果を与えることができる。図1
6の場合も同様に、ノッチ6、切り目7、ミシン目8を
適当な細孔にして内圧の逃げ量を調節することにより、
蒸らし効果が得られる。As described above, in the case shown in FIGS. 14 and 18, the tape 4 of the type having no adhesive layer 43 in the separating portion 43a cannot be used. Therefore, FIG.
As shown in FIG.
a and 4a are formed, and the sheets 5 of the bag body 1 are directly heat-sealed to each other only to form the heat-sealing portion 2b. When the internal pressure increases, it can be released from the portion 4b other than the heat sealing portion 2b (the portion other than the cutout 4a). By appropriately selecting the size of the portion 4b other than the notch so that the internal pressure is gradually released, a steaming effect can be provided when the stored item is, for example, cooked rice. FIG.
Similarly, in the case of 6, by adjusting the notch 6, the notch 7, and the perforation 8 to appropriate pores and adjusting the escape amount of the internal pressure,
A steaming effect is obtained.
【0035】以上の図10乃至図19から理解されるよ
うに、テープ4の挿入個所は任意に選択可能である。As can be understood from FIGS. 10 to 19, the insertion position of the tape 4 can be arbitrarily selected.
【0036】なお、前記図1と図10乃至図19では平
袋の例を示したが、他の実施形態として、自立袋を図2
0に示す。図示のように、自立袋1aの上部に易剥離テ
ープ4が挿入されている。そして、テープ4は、自立袋
1aの開口部から外部に突出している。この突出部の層
41と42を予め分離しておくと、手で容易に開封する
ことができる。勿論平袋の場合も同様である。Although FIG. 1 and FIGS. 10 to 19 show an example of the flat bag, as another embodiment, a self-standing bag is shown in FIG.
0 is shown. As shown in the figure, the easy peeling tape 4 is inserted in the upper portion of the self-standing bag 1a. The tape 4 projects outside from the opening of the self-standing bag 1a. If the layers 41 and 42 of the protrusion are separated in advance, they can be easily opened by hand. Of course, the same applies to flat bags.
【0037】次に実施例及び比較例を挙げる。Next, examples and comparative examples will be described.
【0038】[0038]
【実施例1】シート5(図2参照)の基材51は厚さ1
2μのポリエステル、熱封緘層52は厚さ60μの無延
伸ポリプロピレンを用い、サイズ150mm×250m
mの平袋を作成した。テープ4(図4参照)の熱接着層
412、422はそれぞれ厚さ30μの無延伸ポリプロ
ピレン、基材411、421はそれぞれ厚さ12μのポ
リエステル、樹脂層431はアクリル系樹脂、接着剤層
432は2液硬化型ウレタン系接着剤を用いて長さ15
0mm、巾20mmの易剥離テープを作成し、分離巾a
を5mm、突出部bを2mmとして(図2参照)、図1
8の構造の袋を用意した。主室のサイズは130mm×
195mmとし、内容物は30gのガーゼに水50gを
含浸させたものを用いた。Example 1 The base material 51 of the sheet 5 (see FIG. 2) has a thickness of 1
2μ polyester, heat-sealing layer 52 uses unstretched polypropylene with a thickness of 60μ, size 150mm × 250m
m flat bags were prepared. The heat-adhesive layers 412 and 422 of the tape 4 (see FIG. 4) are 30 μm-thick unstretched polypropylene, the substrates 411 and 421 are 12 μm-thick polyester, the resin layer 431 is an acrylic resin, and the adhesive layer 432 is Length of 15 using a two-component curing type urethane adhesive
Create an easily peelable tape with a width of 0 mm and a width of 20 mm and separate it with a separation width a
Is 5 mm and the protrusion b is 2 mm (see FIG. 2).
A bag having a structure of 8 was prepared. The size of the main room is 130 mm ×
The content was 195 mm, and the content was 30 g of gauze impregnated with 50 g of water.
【0039】[0039]
【実施例2】実施例1と同じシートを用い、同じサイズ
の平袋を作成した。易剥離テープも実施例1と同様であ
るがアクリル系樹脂層は図6のように2層(431と4
33)形成し、サイズは長さ130mm、巾20mmと
して、図16の構造の袋を用意し、同じ内容物を封入し
た。Example 2 Using the same sheet as in Example 1, a flat bag of the same size was prepared. The easy peeling tape was the same as in Example 1, but the acrylic resin layer was two layers (431 and 4) as shown in FIG.
33) Formed, with a size of 130 mm and a width of 20 mm, a bag having the structure of FIG. 16 was prepared, and the same contents were enclosed.
【0040】[0040]
【実施例3】基材を厚さ20μのヒートシール性を有す
るポリエステル共重合体、外面の接着層を厚さ30μの
無延伸ポリプロピレン、内面の剥離層をアクリル系樹脂
層とした易剥離テープを作成し、他は実施例1と同様に
して同じ内容物を封入した平袋を用意した。Example 3 An easily peelable tape having a base material having a thickness of 20 μm and a heat-sealable polyester copolymer, an outer adhesive layer having a thickness of 30 μm unstretched polypropylene, and an inner release layer having an acrylic resin layer was prepared. A flat bag was prepared in which the same contents were enclosed as in Example 1 except for the above.
【0041】[0041]
【実施例4】実施例1と同じシート5を用い、同様のサ
イズの平袋を作成した。易剥離テープ4についても実施
例1と同様の素材を用いサイズも同様にしたものを作成
した。ただし分離部43aを形成させるために、図8の
ように2液硬化型ポリウレタン接着剤を塗布しない部分
を5mm設けて作成した。Example 4 Using the same sheet 5 as in Example 1, a flat bag of the same size was prepared. The easily peelable tape 4 was also made of the same material as in Example 1 and had the same size. However, in order to form the separation portion 43a, as shown in FIG. 8, a portion not coated with the two-component curing type polyurethane adhesive was provided with a thickness of 5 mm.
【0042】上記のようにして作成したシート5及び易
剥離テープ4(図3参照)を用いb1 を2mm、b2 を
7mmとなるようにして実施例1と同様のサイズで図1
8の構造の袋を用意し同じ内容物を封入した。Using the sheet 5 and the easily peelable tape 4 (see FIG. 3) prepared as described above, b 1 was set to 2 mm and b 2 was set to 7 mm, and the same size as in Example 1 was used.
A bag having a structure of 8 was prepared and the same contents were enclosed.
【0043】[0043]
【比較例】実施例1と同じテープ、袋、内容物を用い、
テープの分離巾aが3mm、突出巾bが5mm、即ちa
<bの平袋を用意した。Comparative Example Using the same tape, bag and contents as in Example 1,
The separation width a of the tape is 3 mm, and the protrusion width b is 5 mm, that is, a
A flat bag of <b was prepared.
【0044】上記実施例及び比較例の各袋を手で10秒
間強く振って遺漏がないかどうかをテストしたが、いず
れも内容物の遺漏は見られなかった。Each bag of the above Examples and Comparative Examples was shaken by hand for 10 seconds to test whether or not there was any omission, but none of the contents was omission.
【0045】次に、1200Wの電子レンジで1分間加
熱したところ、実施例のものは、加熱開始から30秒後
に蒸気逃げ口から蒸気が噴出しその後安定したふくらみ
状態を保ち破裂せずに加熱できたが、比較例のものは途
中で破裂した。Next, when heated in a microwave oven of 1200 W for 1 minute, in the example, after 30 seconds from the start of heating, steam was ejected from the steam escape port, and after that, a stable bulging state was maintained and heating was possible without bursting. However, the comparative example bursts on the way.
【0046】[0046]
【効果】この発明によれば、以上のように、易剥離テー
プを任意の自然開口予定部に介在させ、このテープを袋
の内容物収納部側に突出させ、この突出部の巾をテープ
の内端から巾方向に設けた分離部以下にしたので、耐圧
性に優れてレトルト殺菌にも耐えると同時に流通取り扱
い時の耐衝撃性も大きく、しかも電子レンジ等による加
熱調理時の内圧増加に対しては、前記分離部に加圧力が
作用して易剥離テープが容易に分離するため、内圧の逃
げ口が自動的に形成される利点がある。According to the present invention, as described above, the easily peelable tape is interposed at an arbitrary natural opening planned portion, and the tape is projected toward the contents storage portion side of the bag, and the width of the projected portion is set to the width of the tape. Since it is below the separation part provided in the width direction from the inner end, it has excellent pressure resistance, withstands retort sterilization, and at the same time has high impact resistance during distribution and handling, and against increase in internal pressure during heating and cooking by microwave oven etc. On the other hand, since a pressure force acts on the separating portion to easily separate the easily peelable tape, there is an advantage that an escape port for the internal pressure is automatically formed.
【0047】また、易剥離テープに切欠きを設けたり、
袋に切り目等を設けることによって、内圧の逃げ口の大
きさを適当に選択することができ、これによって加熱す
る内容物に蒸らし効果を与えることができる。Further, the easy peeling tape may be provided with a notch,
By providing a cut or the like on the bag, the size of the escape port for the internal pressure can be appropriately selected, and thereby the contents to be heated can be steamed.
【図1】この発明の包装袋の一例を示す正面図FIG. 1 is a front view showing an example of a packaging bag of the present invention.
【図2】同上のI−I線に沿った拡大縦断面図FIG. 2 is an enlarged vertical sectional view taken along line I-I of the above.
【図3】図1のI−I線に沿った他の例を示す拡大縦断
面図FIG. 3 is an enlarged vertical sectional view showing another example taken along line I-I of FIG.
【図4】易剥離テープの断面図FIG. 4 is a sectional view of an easily peelable tape.
【図5】同上の樹脂層の塗布パターンを示す平面図FIG. 5 is a plan view showing a coating pattern of the resin layer of the above.
【図6】易剥離テープの他の例を示す断面図FIG. 6 is a cross-sectional view showing another example of the easily peelable tape.
【図7】易剥離テープのさらに他の例を示す断面図FIG. 7 is a cross-sectional view showing still another example of the easily peelable tape.
【図8】易剥離テープのさらにまた他の例を示す断面図FIG. 8 is a cross-sectional view showing still another example of the easily peelable tape.
【図9】袋を形成する積層シートの例を示す断面図FIG. 9 is a sectional view showing an example of a laminated sheet forming a bag.
【図10】包装袋の他の例を示す正面図FIG. 10 is a front view showing another example of the packaging bag.
【図11】同上の横断面図FIG. 11 is a transverse sectional view of the above.
【図12】包装袋のさらに他の例を示す正面図FIG. 12 is a front view showing still another example of the packaging bag.
【図13】同上の縦断面図FIG. 13 is a vertical sectional view of the same.
【図14】包装袋のさらにまた他の例を示す正面図FIG. 14 is a front view showing still another example of the packaging bag.
【図15】同上の横断面図FIG. 15 is a transverse sectional view of the above.
【図16】包装袋の別の例を示す正面図FIG. 16 is a front view showing another example of the packaging bag.
【図17】同上の縦断面図FIG. 17 is a vertical sectional view of the above.
【図18】包装袋のさらに別の例を示す正面図FIG. 18 is a front view showing still another example of the packaging bag.
【図19】包装袋のさらにまた別の例を示す正面図FIG. 19 is a front view showing still another example of the packaging bag.
【図20】包装袋が自立袋である例を示す斜視図FIG. 20 is a perspective view showing an example in which the packaging bag is a self-supporting bag.
1 袋本体 1a 自立袋 2、2a、2b 熱封緘部 3 内容物 4 易剥離テープ 4a 切欠き 5 袋の積層シート 6 ノッチ 7 切り目 8 ミシン目 9 開封用ノッチ a 易剥離テープの分離巾 b 易剥離テープの袋内部への突出巾 41、42 熱融着性を有する層 43 易剥離接着層 411、421 基材 412、422 熱接着層 431 樹脂層 432 接着剤層 51 基材 52 熱封緘層 511 表面保護層 512 ガスバリヤー層 513 補強層 1 bag body 1a self-supporting bag 2, 2a, 2b heat seal part 3 contents 4 easy peeling tape 4a notch 5 bag laminated sheet 6 notch 7 notch 8 perforation 9 opening notch a easy peeling tape separation width b easy peeling Width of protrusion of tape into bag 41, 42 Layer having heat fusion property 43 Easy peeling adhesive layer 411, 421 Base material 412, 422 Thermal adhesive layer 431 Resin layer 432 Adhesive layer 51 Base material 52 Heat sealing layer 511 Surface Protective layer 512 Gas barrier layer 513 Reinforcing layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 杉山 敦則 大阪市中央区久太郎町三丁目6番8号 東 洋アルミニウム株式会社内 (72)発明者 清水 太一 大阪市中央区久太郎町三丁目6番8号 東 洋アルミニウム株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Atsunori Sugiyama 3-6-8, Kutaro-cho, Chuo-ku, Osaka Toyo Aluminum Co., Ltd. (72) Taichi Shimizu 3--6-3, Kutaro-cho, Chuo-ku, Osaka No. 8 Toyo Aluminum Co., Ltd.
Claims (4)
熱融着可能な熱接着層を有し、内層に易剥離接着層を有
する易剥離テープを、袋本体の自然開封予定熱封緘部に
介在させかつその熱封緘部よりも袋本体の内容物収納部
側に突出させた突出部を設け、この易剥離テープの内端
から巾方向に前記易剥離接着剤が存在しないか又は予め
剥離した分離部を設け、この分離部の巾を前記突出部の
巾以上にした包装袋。1. An easy-peelable tape having a heat-sealing layer of a bag body and a heat-adhesive layer capable of heat-sealing on both outermost layers, and an easy-peelable adhesive layer on an inner layer. A protruding portion that is interposed between the heat-sealing portion and the heat-sealing portion and protrudes toward the contents storage portion of the bag main body, and the easy-peeling adhesive does not exist in advance in the width direction from the inner end of the easy-peeling tape. A packaging bag in which a separated separation portion is provided and the width of the separation portion is equal to or larger than the width of the protruding portion.
面よりも他面で大きくし、前記分離部の巾を突出部の小
なる巾以上にしたことを特徴とする請求項1に記載の包
装袋。2. The width of the protruding portion is made larger on the other surface than on one surface of the easy-peeling tape, and the width of the separating portion is made larger than the smaller width of the protruding portion. Packaging bag.
た請求項1又は2に記載の包装袋。3. The packaging bag according to claim 1, wherein a cutout is provided at an end of the easily peelable tape.
とは異なる位置に配置されていることを特徴とする請求
項1乃至3のいずれかに記載の包装袋。4. The packaging bag according to claim 1, wherein the heat-sealing portion to be opened is arranged at a position different from the opening portion of the bag body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8068355A JPH09286471A (en) | 1996-02-22 | 1996-03-25 | Packaging bag |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8-35035 | 1996-02-22 | ||
JP3503596 | 1996-02-22 | ||
JP8068355A JPH09286471A (en) | 1996-02-22 | 1996-03-25 | Packaging bag |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09286471A true JPH09286471A (en) | 1997-11-04 |
Family
ID=26373933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8068355A Pending JPH09286471A (en) | 1996-02-22 | 1996-03-25 | Packaging bag |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09286471A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000118575A (en) * | 1998-10-13 | 2000-04-25 | Meiwa Packs:Kk | Standing pouch with automatic pressure control function |
JP2001010678A (en) * | 1999-06-28 | 2001-01-16 | Dainippon Printing Co Ltd | Package |
JP2002249177A (en) * | 2000-12-22 | 2002-09-03 | Toppan Printing Co Ltd | Packaging bag for microwave oven |
JP2005200022A (en) * | 2004-01-13 | 2005-07-28 | Dainippon Printing Co Ltd | Packaging bag for heating |
JP2007099280A (en) * | 2005-09-30 | 2007-04-19 | Yuni Kogyo Kk | Tape for re-sealing bag and re-sealing bag |
JP2009274771A (en) * | 2009-08-26 | 2009-11-26 | Kyodo Printing Co Ltd | Packaging bag for microwave oven |
JP2010126241A (en) * | 2008-11-28 | 2010-06-10 | Kyodo Printing Co Ltd | Laminated film, laminated tape, and packaging bag using the same for heating by microwave oven |
JP2013043658A (en) * | 2011-08-22 | 2013-03-04 | Toppan Printing Co Ltd | Microwave heating container package for chinese dumpling |
JP2014193753A (en) * | 2014-06-10 | 2014-10-09 | Seisan Nipponsha:Kk | Easy-open type packaging bag |
-
1996
- 1996-03-25 JP JP8068355A patent/JPH09286471A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000118575A (en) * | 1998-10-13 | 2000-04-25 | Meiwa Packs:Kk | Standing pouch with automatic pressure control function |
JP2001010678A (en) * | 1999-06-28 | 2001-01-16 | Dainippon Printing Co Ltd | Package |
JP2002249177A (en) * | 2000-12-22 | 2002-09-03 | Toppan Printing Co Ltd | Packaging bag for microwave oven |
JP2005200022A (en) * | 2004-01-13 | 2005-07-28 | Dainippon Printing Co Ltd | Packaging bag for heating |
JP2007099280A (en) * | 2005-09-30 | 2007-04-19 | Yuni Kogyo Kk | Tape for re-sealing bag and re-sealing bag |
JP2010126241A (en) * | 2008-11-28 | 2010-06-10 | Kyodo Printing Co Ltd | Laminated film, laminated tape, and packaging bag using the same for heating by microwave oven |
JP2009274771A (en) * | 2009-08-26 | 2009-11-26 | Kyodo Printing Co Ltd | Packaging bag for microwave oven |
JP2013043658A (en) * | 2011-08-22 | 2013-03-04 | Toppan Printing Co Ltd | Microwave heating container package for chinese dumpling |
JP2014193753A (en) * | 2014-06-10 | 2014-10-09 | Seisan Nipponsha:Kk | Easy-open type packaging bag |
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