JP4003272B2 - Paper container with an easy opening - Google Patents

Paper container with an easy opening Download PDF

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Publication number
JP4003272B2
JP4003272B2 JP00636598A JP636598A JP4003272B2 JP 4003272 B2 JP4003272 B2 JP 4003272B2 JP 00636598 A JP00636598 A JP 00636598A JP 636598 A JP636598 A JP 636598A JP 4003272 B2 JP4003272 B2 JP 4003272B2
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JP
Japan
Prior art keywords
resin layer
resin
sealing material
film
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.)
Expired - Fee Related
Application number
JP00636598A
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Japanese (ja)
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JPH11198922A (en
Inventor
悦夫 島村
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Toppan Inc
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Toppan Inc
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Publication date
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Priority to JP00636598A priority Critical patent/JP4003272B2/en
Publication of JPH11198922A publication Critical patent/JPH11198922A/en
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Publication of JP4003272B2 publication Critical patent/JP4003272B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/70—Break-in flaps, or members adapted to be torn-off, to provide pouring openings
    • B65D5/708—Separate tearable flexible elements covering a discharge opening of a container, e.g. adhesive tape

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、紙層を基材とする積層材料からなり、飲み口を封止する封止材の開口が良好で、かつ飲み口の密封性も良好な紙容器に関する。
【０００２】
【従来の技術】
近年、お酒、ジュース、コーヒー等の飲料は、図３に示すような円筒型紙製容器が用いられるようになり、この容器は、最外層および最内層にヒートシール性樹脂からなる樹脂層を形成した、紙層を基材とする積層材料を成形したものである。
【０００３】
この紙容器１は、胴部２の上下にそれぞれ天部３、および底部４を胴部２の上下にそれぞれ巻締めて一体化した構成である。そして、天部３には、飲み口５が設けられており、この飲み口５の上部に密封強度をコントロールするために介在フィルム６を介して、封止材７の一端に仮接着部８を形成し、また飲み口５の周辺に密封シール部９を設けて密封してなる。
ここで、紙容器１にジュース等の飲料を無菌充填包装するには、図４に示すように、先ず封止材７の中心側の部分を介在フィルム６上に仮接着部８を設け、次に封止材７を起立させた状態で、充填機内で容器の殺菌、除去、飲料の充填を行う。そして、封止材７を元に戻して、介在フィルム６とにより、飲み口５の周辺を密封シールする。
このように、封止材７を介在フィルム６上で、仮接着、密封シールの両方を行うため、適度なシール強度（仮接着部は剥がれ易く、密封シール部９は漏れがないように密封する）にコントロールするのが困難であった。
すなわち、封止材７の仮接着部８のシール強度が大きいと、摘み部が小さい最初は、封止材を引っ張り起こすことが困難であり、飲み口を開口するのが面倒であった。
【０００４】
【発明が解決しようとする課題】
本発明は、封止材の仮接着部の接着強度は、剥がし易い強度で、かつ密封シール部の強度は、飲料が漏れるおそれのない強度でシールされた、開口容易な飲み口を有する紙容器を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明は、最外層および最内層にヒートシール性樹脂層を設けた紙層を基材とする積層材料からなり、円筒状胴部、円形底部、および円形天部を有し、前記天部に飲み口部を設け、かつこの飲み口の上部に介在フィルムを介して封止材で密封した紙容器において、天部の上面の樹脂層と介在フィルムの下面の樹脂層の樹脂を同種とし、かつ介在フィルムの上面の樹脂層と封止材の下面の樹脂層の樹脂を同種とすると共に、前記天部の上面の樹脂層と封止材の下面の樹脂層の樹脂を異種とし、封止材の仮接着部を天部の上面の箇所に形成したことを特徴とする、開口容易な飲み口を有する紙容器である。
【０００６】
また、本発明は、前記天部の上面の樹脂層と介在フィルムの下面の樹脂層がポリエチレン系樹脂で、介在フィルムの上面の樹脂層と封止材の下面の樹脂層の樹脂がポリプロピレン系樹脂を用いたことを特徴とする、開口容易な飲み口を有する紙容器である。
また、本発明は、前記天部の上面の樹脂層と介在フィルムの下面の樹脂層がポリプロピレン系樹脂で、介在フィルムの上面の樹脂層と封止材の下面の樹脂層の樹脂がポリエチレン系樹脂を用いたことを特徴とする、開口容易な飲み口を有する紙容器である。
【０００７】
【発明の実施の形態】
図１は、本発明の容器本体の天部を示す平面図で、図２は，図１のＡ−Ａからの断面図である。
容器本体１０の胴部１２の上部に、天部１３に設けられた飲み口１５の上方に介在フィルム１６が接着され、この飲み口１５および介在フィルム１６を覆う封止材１７を設ける。この時、飲み口１５周辺に、封止材１７の中心側の長さを、介在フィルム１６の長さより長くすることにより、封止材１７の下面と介在フィルム１６上面との樹脂層間の密封シール部２０、および封止材１７の下面と天部１３の上面との樹脂層間で仮接着部２１が形成される。
【０００８】
ここで、具体的な材料の構成として、天部１３は、上面からポリエチレン（以下ＰＥ）／紙層／ＰＥ／ポリエチレンテレフタレート（以下ＰＥＴ）／ＰＥからなる積層材料で形成されている場合、介在フィルム１６は、上面からポリプロピレン（以下ＰＰ）／ＰＥの積層材料とし、天部１３の上面の樹脂層と介在フィルム１６の下面の樹脂層を同種の樹脂として、強固に接着可能な構成とする。
また、封止材１７は、上面からアルミニウム箔（以下Ａｌ箔）／ＰＰの積層材料を用い、封止材１７の下面の樹脂層と介在フィルム１６の上面の樹脂層を同種の樹脂とし、密封シールを確実に行う。
前記の構成とすることにより、天部１３の上面の樹脂層と封止材１７の下面の樹脂は異種の樹脂からなる構成となる。
【０００９】
また、天部１３を、上面からＰＰ／紙層／ＰＥ／ＰＥＴ／ＰＥからなる積層材料で形成する場合、介在フィルム１６は、上面からＰＥ／ＰＰの積層材料とすればよい。
そして、封止材１７は、上面からアルミニウム箔（以下Ａｌ箔）／ＰＥの積層材料を用いる。
【００１０】
このように、天部１３の構成が、天部１３の上面の樹脂層と、介在フィルム１６の下面の樹脂層が同種の樹脂で、また、介在フィルム１６の上面の樹脂層と、封止材１７の下面の樹脂層が同種の樹脂であり、かつ、天部１３の上面の樹脂層と、封止材１７の下面の樹脂層の樹脂は異なる樹脂で形成されれば、前記の樹脂に限定されるものでなく、目的に応じてヒートしーる性樹脂を適宜樹脂を選定すればよい。
【００１１】
これにより、上方から加熱加圧してヒートシールすると、仮接着部２１は、疑似接着状態となるので、開封の摘み部が小さくても、容易に開封を開始することができる。また、密封シール部２０は、同種の樹脂で、溶融状態となるので、密封性が良好で、しかも開口に際しては、摘み部が大きくなり、シール強度が大きくても容易に開封することができる。
【００１２】
また、容器本体にバリア性を必要とする場合は、紙層お内側にバリア性材料を配置すればよい。
このバリア性材料として、アルミニウム箔、金属あるいはまたは金属酸化物蒸着フィルム、またはエチレンービニルアルコール共重合体等のガスバリア性樹脂のいずれか一種、またはこれらを組み合わせて使用すればよい。
【００１３】
【発明の効果】
本発明は、以上の構成からなるので、仮接着部は、疑似接着状態となるので、開封の摘み部が小さくても、容易に開封を開始することができる。また、密封シール部、同種の樹脂で、溶融状態となるので、密封性が良好で、しかも開口に際しては、摘み部が大きくなり、密封シール部のシール強度が大きくても容易に開封することができる。
【図面の簡単な説明】
【図１】は、本発明の紙容器のの天部の一例を示す平面図である。
【図２】は、図１のＡ−Ａからの断面図である。
【図３】は、円筒型紙容器の説明図である。
【図４】は、図３の容器を用いて充填する状態を示す説明図である。
【符号の説明】
１０…容器本体
１２…胴部
１３…天部
１５…飲み口
１６…介在フィルム
１７…封止材
２０…密封シール部
２１…仮接着部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper container which is made of a laminated material having a paper layer as a base material, has a good opening for a sealing material for sealing a drinking mouth, and has a good sealing property for the drinking mouth.
[0002]
[Prior art]
In recent years, beverages such as liquor, juice, and coffee have come to use cylindrical paper containers as shown in FIG. 3, and this container forms a resin layer made of a heat-sealable resin on the outermost layer and the innermost layer. A laminated material having a paper layer as a base material is molded.
[0003]
The paper container 1 has a configuration in which the top portion 3 and the bottom portion 4 are respectively wound up and down on the upper and lower sides of the body portion 2 so as to be integrated. The top 3 is provided with a drinking mouth 5, and a temporary bonding portion 8 is attached to one end of the sealing material 7 via an intervening film 6 in order to control the sealing strength at the top of the drinking mouth 5. In addition, a sealing seal portion 9 is provided around the drinking mouth 5 and sealed.
Here, in order to aseptically fill and package a beverage such as juice in the paper container 1, as shown in FIG. 4, first, a temporary bonding portion 8 is provided on the intervening film 6 at the center side portion of the sealing material 7, and then The container 7 is sterilized and removed and the beverage is filled in the filling machine in a state where the sealing material 7 is raised. Then, the sealing material 7 is returned to the original, and the periphery of the drinking mouth 5 is hermetically sealed with the intervening film 6.
As described above, since the sealing material 7 is both temporarily bonded and hermetically sealed on the intervening film 6, the sealing material 7 is appropriately sealed (the temporarily bonded portion is easily peeled off and the hermetically sealed portion 9 is sealed so as not to leak. ) Was difficult to control.
That is, when the sealing strength of the temporary bonding portion 8 of the sealing material 7 is high, it is difficult to pull up the sealing material at the beginning when the knob portion is small, and it is troublesome to open the drinking mouth.
[0004]
[Problems to be solved by the invention]
The present invention relates to a paper container having an easy-to-open drinking mouth, which is sealed with a strength at which the temporary bonding portion of the sealing material is easily peeled off and a strength at which the sealing seal portion does not leak. The purpose is to provide.
[0005]
[Means for Solving the Problems]
The present invention comprises a laminate material based on a paper layer provided with a heat-sealable resin layer on the outermost layer and the innermost layer, and has a cylindrical body portion, a circular bottom portion, and a circular top portion. In a paper container provided with a mouthpiece and sealed with a sealing material through an intervening film at the top of the mouthpiece, the resin of the resin layer on the upper surface of the top and the resin layer on the lower surface of the intervening film are of the same type, and The resin layer on the upper surface of the intervening film and the resin layer on the lower surface of the sealing material are made the same type, and the resin layer on the upper surface of the top part and the resin layer on the lower surface of the sealing material are made different, This is a paper container having a mouth opening that is easy to open.
[0006]
In the present invention, the resin layer on the top surface of the top and the resin layer on the bottom surface of the interposition film are made of polyethylene resin, and the resin on the top surface of the interposition film and the resin layer on the bottom surface of the sealing material are polypropylene resin. A paper container having a mouth opening that is easy to open.
In the present invention, the resin layer on the top surface of the top and the resin layer on the bottom surface of the interposition film are made of polypropylene resin, and the resin on the top surface of the interposition film and the resin layer on the bottom surface of the sealing material are made of polyethylene resin. A paper container having a mouth opening that is easy to open.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view showing the top of the container body of the present invention, and FIG. 2 is a cross-sectional view from AA in FIG.
An intervening film 16 is bonded to the upper portion of the body portion 12 of the container body 10 above the drinking mouth 15 provided on the top portion 13, and a sealing material 17 covering the drinking mouth 15 and the interposing film 16 is provided. At this time, a sealing seal between the resin layer between the lower surface of the sealing material 17 and the upper surface of the interposing film 16 is formed around the drinking mouth 15 by making the length of the central side of the sealing material 17 longer than the length of the interposing film 16. A temporary bonding portion 21 is formed between the resin layer of the portion 20 and the lower surface of the sealing material 17 and the upper surface of the top portion 13.
[0008]
Here, as a specific material configuration, when the top portion 13 is formed of a laminated material composed of polyethylene (hereinafter referred to as PE) / paper layer / PE / polyethylene terephthalate (hereinafter referred to as PET) / PE from the upper surface, an intervening film is used. 16 is made of a laminated material of polypropylene (hereinafter referred to as PP) / PE from the upper surface, and the resin layer on the upper surface of the top portion 13 and the resin layer on the lower surface of the intervening film 16 are made of the same kind of resin and can be firmly bonded.
The sealing material 17 is made of a laminated material of aluminum foil (hereinafter referred to as Al foil) / PP from the upper surface, and the resin layer on the lower surface of the sealing material 17 and the resin layer on the upper surface of the intervening film 16 are made of the same kind of resin. Secure sealing.
By setting it as the said structure, the resin layer of the upper surface of the top part 13 and resin of the lower surface of the sealing material 17 become a structure which consists of a different resin.
[0009]
Further, when the top portion 13 is formed from a laminated material composed of PP / paper layer / PE / PET / PE from the upper surface, the intervening film 16 may be a laminated material of PE / PP from the upper surface.
And the sealing material 17 uses the laminated material of aluminum foil (henceforth Al foil) / PE from the upper surface.
[0010]
Thus, the structure of the top portion 13 is such that the resin layer on the top surface of the top portion 13 and the resin layer on the bottom surface of the interposition film 16 are the same type of resin, and the resin layer on the top surface of the interposition film 16 and the sealing material If the resin layer on the lower surface of 17 is the same type of resin, and the resin layer on the upper surface of the top portion 13 and the resin layer on the lower surface of the sealing material 17 are formed of different resins, the resin layer is limited to the above resin. However, a resin that can be heated according to the purpose may be selected as appropriate.
[0011]
Thereby, when heat-pressing from above and heat-sealing, the temporary bonding portion 21 is in a pseudo-bonded state, so that opening can be easily started even if the opening knob is small. Further, since the hermetic seal portion 20 is made of the same kind of resin and is in a molten state, the hermeticity is good, and when the opening is made, the knob portion becomes large and can be easily opened even if the seal strength is high.
[0012]
In addition, when the container body requires barrier properties, a barrier material may be disposed inside the paper layer.
As this barrier material, any one of an aluminum foil, a metal or metal oxide vapor deposited film, a gas barrier resin such as an ethylene-vinyl alcohol copolymer, or a combination thereof may be used.
[0013]
【The invention's effect】
Since this invention consists of the above structure, since a temporary adhesion part will be in a pseudo-adhesion state, even if the knob | pick part of opening is small, opening can be started easily. In addition, since the hermetic seal part and the same kind of resin are in a molten state, the hermeticity is good, and when opening, the knob is large and can be easily opened even if the hermetic strength of the hermetic seal part is large. it can.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of a top portion of a paper container of the present invention.
FIG. 2 is a cross-sectional view taken along the line AA of FIG.
FIG. 3 is an explanatory diagram of a cylindrical paper container.
FIG. 4 is an explanatory view showing a state of filling using the container of FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Container main body 12 ... Body part 13 ... Top part 15 ... Drinking mouth 16 ... Interposition film 17 ... Sealing material 20 ... Sealing seal part 21 ... Temporary adhesion part

Claims (3)

最外層および最内層にヒートシール性樹脂層を設けた紙層を基材とする積層材料からなり、円筒状胴部、円形底部、および円形天部を有し、前記天部に飲み口を設け、かつこの飲み口の上部に介在フィルムを介して封止材で密封した紙容器において、天部の上面の樹脂層と介在フィルムの下面の樹脂層の樹脂を同種とし、かつ介在フィルムの上面の樹脂層と封止材の下面の樹脂層の樹脂を同種とすると共に、前記天部の上面の樹脂層と封止材の下面の樹脂層の樹脂を異種とし、封止材の仮接着部を天部の上面の箇所に形成したことを特徴とする、開口容易な飲み口を有する紙容器。It is made of a laminated material based on a paper layer with a heat-sealable resin layer provided on the outermost layer and the innermost layer, and has a cylindrical body, a circular bottom, and a circular top, and a drinking mouth is provided on the top. And in a paper container sealed with a sealing material through an intervening film on the upper part of the drinking mouth, the resin layer on the top surface of the top and the resin layer on the lower surface of the intervening film are the same type, and the upper surface of the intervening film The resin layer and the resin of the resin layer on the lower surface of the sealing material are the same type, and the resin layer on the upper surface of the top portion and the resin of the resin layer on the lower surface of the sealing material are different, and the temporary adhesive portion of the sealing material is A paper container having an easy-to-open drinking mouth, characterized in that it is formed at a location on the top surface of the top. 前記天部の上面の樹脂層と介在フィルムの下面の樹脂層がポリエチレン系樹脂で、介在フィルムの上面の樹脂層と封止材の下面の樹脂層の樹脂がポリプロピレン系樹脂を用いたことを特徴とする、請求項１記載の開口容易な飲み口を有する紙容器。The resin layer on the top surface of the top part and the resin layer on the bottom surface of the interposition film are made of polyethylene resin, and the resin layer on the top surface of the interposition film and the resin layer on the bottom surface of the sealing material are made of polypropylene resin. A paper container having an easy-to-open drinking mouth according to claim 1. 前記天部の上面の樹脂層と介在フィルムの下面の樹脂層がポリプロピレン系樹脂で、介在フィルムの上面の樹脂層と封止材の下面の樹脂層の樹脂がポリエチレン系樹脂を用いたことを特徴とする、請求項１記載の開口容易な飲み口を有する紙容器。The resin layer on the top surface of the top and the resin layer on the bottom surface of the interposition film are made of polypropylene resin, and the resin layer on the top surface of the interposition film and the resin layer on the bottom surface of the sealing material are made of polyethylene resin. A paper container having an easy-to-open drinking mouth according to claim 1.
JP00636598A 1998-01-16 1998-01-16 Paper container with an easy opening Expired - Fee Related JP4003272B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP00636598A JP4003272B2 (en) 1998-01-16 1998-01-16 Paper container with an easy opening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00636598A JP4003272B2 (en) 1998-01-16 1998-01-16 Paper container with an easy opening

Publications (2)

Publication Number Publication Date
JPH11198922A JPH11198922A (en) 1999-07-27
JP4003272B2 true JP4003272B2 (en) 2007-11-07

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Publication number Priority date Publication date Assignee Title
US9023445B2 (en) 2011-10-14 2015-05-05 Kellogg North America Company Composite containers for storing perishable products

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