JPH06191588A - Tightly sealed container - Google Patents
Tightly sealed containerInfo
- Publication number
- JPH06191588A JPH06191588A JP4348697A JP34869792A JPH06191588A JP H06191588 A JPH06191588 A JP H06191588A JP 4348697 A JP4348697 A JP 4348697A JP 34869792 A JP34869792 A JP 34869792A JP H06191588 A JPH06191588 A JP H06191588A
- Authority
- JP
- Japan
- Prior art keywords
- lid
- container body
- heat
- container
- lid member
- 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
- Closures For Containers (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は内部に果実、ゼリー液等
の食品が充填される密封容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetically sealed container in which food such as fruit and jelly liquid is filled.
【０００２】[0002]
【従来の技術】従来より、プラスチック製容器本体内に
果実、ゼリー液等を充填し、この容器本体を蓋材で密封
した密封容器が知られている。2. Description of the Related Art Heretofore, there has been known a hermetically sealed container in which a plastic container body is filled with fruit, jelly liquid or the like and the container body is sealed with a lid member.
【０００３】このうち、プラスチック製容器本体は上端
開口に設けられたフランジ部を有しており、この容器本
体はプラスチック製積層材を熱成形して作成される。一
方、蓋材は容器本体のフランジ部にヒートシールされる
ようになっている。Of these, the plastic container body has a flange portion provided at the upper end opening, and the container body is formed by thermoforming a plastic laminated material. On the other hand, the lid member is heat-sealed to the flange portion of the container body.
【０００４】すなわち、蓋材は容器本体のフランジ部に
ヒートシールされるヒートシール部と、このヒートシー
ル部に連設されるとともに下方に落ち込む落し蓋部とか
らなっており、落し蓋部は容器本体の開口を覆うように
なっている。That is, the lid member is composed of a heat-sealing portion which is heat-sealed to the flange portion of the container body, and a drop lid portion which is connected to the heat seal portion and which falls downward. It is designed to cover the opening.
【０００５】[0005]
【発明が解決しようとする課題】ところで、容器本体の
フランジ部と蓋材のヒートシール部との間のヒートシー
ルは、所定温度に加熱されたシール装置により行なわれ
る。この場合、シール温度が高すぎると、ヒートシール
後に容器本体から蓋材を剥離する際の剥離性が悪くな
り、根切れ不良が生じることがある。一方、シール温度
が低すぎると、ヒートシールする際の接着性が悪くな
り、十分にフランジ部とヒートシール部とが接着しない
ことがある。The heat sealing between the flange portion of the container body and the heat sealing portion of the lid member is performed by a sealing device heated to a predetermined temperature. In this case, if the sealing temperature is too high, the releasability when the lid material is peeled from the container body after heat sealing deteriorates, and defective root cutting may occur. On the other hand, if the sealing temperature is too low, the adhesiveness at the time of heat sealing may be deteriorated, and the flange portion and the heat sealing portion may not be sufficiently bonded.
【０００６】本発明はこのような点を考慮してなされた
ものであり、ヒートシール時における接着性の向上を図
ることができるとともに、使用にあたって蓋材を容易に
容器本体から剥離することができる密封容器を提供する
ことを目的とする。The present invention has been made in consideration of the above points, and it is possible to improve the adhesiveness at the time of heat sealing, and at the time of use, the lid member can be easily peeled from the container body. It is intended to provide a sealed container.
【０００７】[0007]
【課題を解決するための手段】本発明は、開口周縁にフ
ランジ部を有する容器本体と、前記フランジ部にヒート
シールされる蓋材とを備え、前記容器本体および前記蓋
材は、プラスチック製積層材からなり、前記容器本体の
蓋材側の内層は８０〜９５重量パーセントのエチレン酢
酸ビニルコポリマーと、５〜２０重量パーセントのポリ
ブデン−１とを含み、前記蓋材の容器本体側の内層は７
０〜８５重量パーセントのエチレン酢酸ビニルコポリマ
ーと、１５〜３０重量パーセントのポリブデン−１とを
含むことを特徴とする密封容器である。SUMMARY OF THE INVENTION The present invention comprises a container body having a flange portion on the periphery of an opening, and a lid member that is heat-sealed to the flange portion, wherein the container body and the lid member are made of a plastic laminate. The inner layer of the container body on the lid material side comprises 80 to 95 weight percent of ethylene vinyl acetate copolymer and 5 to 20 weight percent of polybutene-1, and the inner layer of the lid material on the vessel body side is 7
A sealed container comprising 0 to 85 weight percent ethylene vinyl acetate copolymer and 15 to 30 weight percent polybutene-1.
【０００８】[0008]
【実施例】以下、図面を参照して本発明の実施例につい
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１は本発明による密封容器の一実施例を
示す側断面図であり、図２はその平面図である。FIG. 1 is a side sectional view showing an embodiment of a sealed container according to the present invention, and FIG. 2 is a plan view thereof.
【００１０】図１および図２に示すように、密封容器１
は内部に果実４とゼリー液５を収納する容器本体２と、
この容器本体２を密封する蓋材３とから構成されてい
る。As shown in FIGS. 1 and 2, the sealed container 1
Is a container body 2 for storing the fruit 4 and the jelly liquid 5 therein,
It is composed of a lid member 3 for sealing the container body 2.
【００１１】このうち容器本体２は容器胴部２ａと、容
器胴部２ａの上端開口周縁に設けられたフランジ部２ｂ
とからなっている。Of these, the container body 2 includes a container body 2a and a flange portion 2b provided on the periphery of the upper end opening of the container body 2a.
It consists of
【００１２】一方、蓋材３は容器本体２のフランジ部２
ｂにヒートシールされる（融着される）ヒートシール部
３ｂと、このヒートシール部３ｂの内側に設けられた落
し蓋部３ａとからなっている。落し蓋部３ａは容器胴部
２ａの開口を覆う部分であり、段部７を介してヒートシ
ール部３ｂに連設されている。この段部７は容器胴部２
ａの内面に嵌り込む部分である。On the other hand, the lid member 3 is the flange portion 2 of the container body 2.
The heat-sealing portion 3b is heat-sealed (fused) to b, and the drop lid portion 3a provided inside the heat-sealing portion 3b. The drop lid portion 3a is a portion that covers the opening of the container body portion 2a, and is connected to the heat seal portion 3b via the step portion 7. This step portion 7 is the container body portion 2.
It is a portion fitted into the inner surface of a.
【００１３】蓋材３は図２に示すように容器胴部２ａの
開口の形状に対応した形状を有し、蓋材３の一つの隅に
は蓋材３を容器本体２から剥取るためのタブ１０が取り
付けられている。蓋材の形状は、容器本体２の形状に合
わせて角型、丸型、六角形型など各種形状をとることが
できる。As shown in FIG. 2, the lid member 3 has a shape corresponding to the shape of the opening of the container body 2a, and one of the corners of the lid member 3 is for removing the lid member 3 from the container body 2. A tab 10 is attached. The lid material may have various shapes such as a square shape, a round shape, and a hexagonal shape according to the shape of the container body 2.
【００１４】次に各構成部材の材質について説明する。
図３（ａ）に示すように、蓋材３はポリプロピレン（Ｐ
Ｐ）３１／接着層（ＡＤ）３２／エチレン・ビニルアル
コール共重合体（ＥＶＯＨ）３３／接着層（ＡＤ）３４
／シーラント層３５の積層材を熱成形して得られる。シ
ーラント層３５は容器本体２側の層であり、エチレン酢
酸ビニルコポリマー（ＥＶＡ）とポリブデン−１（ＰＢ
−１）とを含んでいる。このうちＥＶＡは７０〜８５重
量％を占め、残りはＰＢ−１あるいはＰＢ−１にＬＤＥ
Ｐなどオレフィン系樹脂を添加したものとなっている。Next, the material of each component will be described.
As shown in FIG. 3A, the lid member 3 is made of polypropylene (P
P) 31 / adhesive layer (AD) 32 / ethylene / vinyl alcohol copolymer (EVOH) 33 / adhesive layer (AD) 34
/ Obtained by thermoforming the laminated material of the sealant layer 35. The sealant layer 35 is a layer on the container body 2 side and includes ethylene vinyl acetate copolymer (EVA) and polybutene-1 (PB).
-1) and are included. Of these, EVA accounts for 70 to 85% by weight, and the rest is PB-1 or LDE on PB-1.
An olefin resin such as P is added.
【００１５】また、ＥＶＡとしては、ＭＦＲ０．５〜１
５ｇ／min で、ＶＡ値が３〜７％のものが用いられる。
成形品の金型への成形時の離形を慮し、ＭＦＲは低い方
が良く、０．５〜１．０ｇ／min が望ましい。また、酢
ビ含有は増すにつれ低温シール性が向上するが、耐ボイ
ル性が低下するので３〜５％が望ましい。ＶＡ値５％で
８５℃、３０分のボイル耐性がある。As EVA, MFR 0.5 to 1
A VA value of 3 to 7% at 5 g / min is used.
The MFR is preferably as low as possible in consideration of mold release when molding the molded product into a mold, and 0.5 to 1.0 g / min is desirable. Further, as the content of vinyl acetate increases, the low-temperature sealing property improves, but the boiling resistance decreases, so 3 to 5% is desirable. It has a boiling resistance of 85 ° C for 30 minutes at a VA value of 5%.
【００１６】他方、図３（ｂ）に示すように、容器本体
２は蓋材３側から順に、シーラント層２１／ＡＤ２２／
ＥＶＯＨ２３／ＡＤ２４／ＰＰ２５の積層材を熱成形し
て得られる。On the other hand, as shown in FIG. 3 (b), the container body 2 is provided with the sealant layer 21 / AD22 /
It is obtained by thermoforming a laminated material of EVOH23 / AD24 / PP25.
【００１７】シーラント層２１は蓋材３側の層であり、
ＥＶＡとＰＢ−１とを含んでおり、このうちＥＶＡは８
０〜９５重量％を占め、残りはＰＢ−１あるいはＰＢ−
１にＬＤＰＥなどオレフィン系樹脂を添加したものとな
っている。ＥＶＡとしては、蓋材３の場合と同様、ＭＦ
Ｒ０．５〜１５でＶＡ値が３〜５％のものが用いられ
る。The sealant layer 21 is a layer on the side of the lid member 3,
Includes EVA and PB-1, of which EVA is 8
0 to 95% by weight, the rest is PB-1 or PB-
1 to which an olefin resin such as LDPE is added. As for EVA, as in the case of the cover material 3, MF
R 0.5 to 15 having a VA value of 3 to 5% is used.
【００１８】本実施例によれば、ヒートシールされる蓋
材３側のシーラント層３１と容器本体２側のシーラント
層２１が、上述のようにＥＶＡとＰＢ−１の混合体から
なっているので、低温シールを実現でき、また容器本体
２から蓋材３を剥離する際の剥離性向上を図ることがで
きる。ＥＶＡとＰＢ−１のうち、ＥＶＡは主として接着
機能を有し、ＰＢ−１はＥＶＡの接着機能の制御と、剥
離感が向上するよう機能する。According to this embodiment, the sealant layer 31 on the side of the lid 3 and the sealant layer 21 on the side of the container body 2 to be heat-sealed are composed of the mixture of EVA and PB-1 as described above. Thus, low-temperature sealing can be realized, and peelability at the time of peeling the lid member 3 from the container body 2 can be improved. Among EVA and PB-1, EVA mainly has an adhesive function, and PB-1 functions to control the adhesive function of EVA and to improve the peeling feeling.
【００１９】次に本発明の具体例について説明する。Next, specific examples of the present invention will be described.
【００２０】上述のような層構成の積層を熱成形して、
蓋材３および容器本体２を得た。蓋材原反厚みは、０．
２５mmで、底材原反厚みは０．８mmであった。容器本体
２は角型の１１０ｇ容量のものを使用した。Thermoforming a laminate of the above layer construction,
The lid member 3 and the container body 2 were obtained. The original thickness of the lid material is 0.
The thickness of the base material was 25 mm, and the thickness of the base material was 0.8 mm. As the container body 2, a rectangular container having a capacity of 110 g was used.
【００２１】蓋材３のシーラント層３５および容器本体
２のシーラント層２１を構成するＥＶＡおよびＰＢ−１
として、以下のものを用いた。シーラント層３５，２１
の厚みは、それぞれ５０μである。EVA and PB-1 constituting the sealant layer 35 of the lid member 3 and the sealant layer 21 of the container body 2.
The following were used as Sealant layer 35, 21
Has a thickness of 50 μm.
【００２２】ＥＶＡ：日本ユニカー製ＮＵＣ−３５３０
（ＭＦＲ０．５ｇ／min 、ＶＡ値３％） ＰＢ−１：三井石油化学製ＢＴ−０２７（ＭＦＲ２．０
ｇ／min ） 次に容器本体２のフランジ部２ｂに、蓋材３のヒートシ
ール部３ｂを、シール全圧８０kg、２秒・２回シールの
ヒートシール条件のもとでヒートシールして密封容器１
を得た。次にシール温度を種々変化した場合における蓋
材の容器本体からの剥離度を調べ、下表に示した。本発
明において、蓋材のシーラント層のＥＶＡの構成比を
８５重量％とし、容器本体のシーラント層のＥＶＡの構
成比を８５重量％とした場合と、蓋材のシーラント層
および容器本体のシーラント層のＥＶＡの構成比を、各
々９０重量％および８５重量％とした場合、２通りの剥
離強度を調べた。EVA: NUC-3530 made by Nippon Unicar
(MFR 0.5 g / min, VA value 3%) PB-1: BT-027 manufactured by Mitsui Petrochemical (MFR 2.0
g / min) Next, the heat-sealing portion 3b of the lid member 3 is heat-sealed on the flange portion 2b of the container body 2 under a heat-sealing condition of a total sealing pressure of 80 kg, 2 seconds / twice sealing, and a sealed container. 1
Got Next, the degree of peeling of the lid material from the container body when the sealing temperature was changed variously was examined, and shown in the table below. In the present invention, the composition ratio of EVA in the sealant layer of the lid material is 85% by weight, the composition ratio of EVA in the sealant layer of the container body is 85% by weight, and the sealant layer of the lid material and the sealant layer of the container body are When the composition ratio of EVA was 90% by weight and 85% by weight, respectively, two kinds of peel strengths were examined.
【００２３】さらに比較例として、実施例と同じ厚みの
ＰＰ／ＡＤ／ＥＶＯＨ／ＡＤ／ＰＰの積層材からなる容
器本体に、実施例と同じ厚みのＰＰ／ＡＤ／ＥＶＯＨ／
ＡＤ／シーラント層の積層材からなる蓋材をヒートシー
ルして密封容器を作成し、容器本体から蓋材を剥離する
際の剥離強度を調べた。比較例の蓋材のシーラント層は
ポリプロピレン（ＰＰ）＋ポリエチレン（ＰＥ）の混合
体とした。比較例の蓋材のシーラント層の厚みは５０μ
である。Further, as a comparative example, a container body made of a laminated material of PP / AD / EVOH / AD / PP having the same thickness as that of the embodiment, and PP / AD / EVOH / having the same thickness as that of the embodiment is used.
A lid member made of a laminated material of an AD / sealant layer was heat-sealed to form a hermetically sealed container, and the peel strength when the lid member was peeled from the container body was examined. The sealant layer of the lid material of the comparative example was a mixture of polypropylene (PP) + polyethylene (PE). The thickness of the sealant layer of the lid material of the comparative example is 50 μm.
Is.
【００２４】[0024]
【表１】 上表から明らかなように、本発明、の場合、１４０
℃〜１６０℃程度の比較的低いシール温度により容器本
体と蓋材との間で確実にヒートシールすることができ
た。また、このような低温シールの場合（１４０℃〜１
６０℃）、ＰＰの融点以下である為、蓋材となるＰＰ層
が溶融せず、根切れ不良が起きることが無い。[Table 1] As is apparent from the above table, in the case of the present invention, 140
Due to the relatively low sealing temperature of about ℃ to 160 ℃, it was possible to reliably heat seal between the container body and the lid member. In the case of such a low temperature seal (140 ° C to 1
60 ° C.) or lower than the melting point of PP, the PP layer that serves as the lid material does not melt and defective root cutting does not occur.
【００２５】一方、比較例の場合は、低いシール温度で
ヒートシールした場合、容器本体と蓋材との間の接着性
が低下してしまう。すなわち、低温シールは困難であっ
た。On the other hand, in the case of the comparative example, when heat sealing is performed at a low sealing temperature, the adhesiveness between the container body and the lid member is deteriorated. That is, low temperature sealing was difficult.
【００２６】なお、この他に、蓋材のシーラント層のＥ
ＶＡを８０〜９５重量％の範囲に変化させ、また容器本
体のシーラント層のＥＶＡを７０〜８５重量％の範囲に
変化させた場合において、上記具体例と同様にして容器
本体に蓋材をヒートシールし、その後蓋材を剥離させ
た。この場合も、１４０℃〜１６０℃の低いシール温度
で確実にヒートシールすることができ、ＰＰ基材が溶融
せず値切れ不良を防止することができた。In addition to this, E of the sealant layer of the lid material
When VA was changed to the range of 80 to 95% by weight and EVA of the sealant layer of the container body was changed to the range of 70 to 85% by weight, the container body was heated with the lid material in the same manner as in the above specific example. After sealing, the lid material was peeled off. Also in this case, it was possible to surely perform heat sealing at a low sealing temperature of 140 ° C. to 160 ° C., and it was possible to prevent the PP base material from being melted and the defective value cutout being prevented.
【００２７】[0027]
【発明の効果】以上説明したように、本発明によれば１
４０℃〜１６０℃の比較的低温のシール温度でヒートシ
ールすることにより、積層材の基材が溶融する根切れ不
良を防止することができる。このような低温シールを実
現することができるので、使用にあたって容器本体から
蓋材を容易に剥離することができる。As described above, according to the present invention, 1
By heat-sealing at a relatively low sealing temperature of 40 ° C. to 160 ° C., it is possible to prevent defective root cutting in which the base material of the laminated material melts. Since such a low temperature seal can be realized, the lid member can be easily peeled off from the container body before use.
【図１】本発明による密封容器の一実施例を示す側断面
図。FIG. 1 is a side sectional view showing an embodiment of a sealed container according to the present invention.
【図２】図１に示す密封容器の平面図。FIG. 2 is a plan view of the sealed container shown in FIG.
【図３】密封容器の容器本体および蓋材の積層材を示す
図。FIG. 3 is a view showing a laminated body of a container body and a lid member of a hermetically sealed container.
１ 密封容器 ２ 容器本体 ２ｂ フランジ部 ３ 蓋材 ３ｂ ヒートシール部 ２１ シーラント層 ３５ シーラント層 1 Sealed Container 2 Container Main Body 2b Flange Part 3 Lid Material 3b Heat Seal Part 21 Sealant Layer 35 Sealant Layer
Claims (1)
と、前記フランジ部にヒートシールされる蓋材とを備
え、前記容器本体および前記蓋材は、プラスチック製積
層材からなり、前記容器本体の蓋材側の内層は８０〜９
５重量パーセントのエチレン酢酸ビニルコポリマーと、
５〜２０重量パーセントのポリブデン−１とを含み、前
記蓋材の容器本体側の内層は７０〜８５重量パーセント
のエチレン酢酸ビニルコポリマーと、１５〜３０重量パ
ーセントのポリブデン−１とを含むことを特徴とする密
封容器。1. A container main body having a flange portion on a peripheral edge of an opening, and a lid member heat-sealed to the flange portion, wherein the container main body and the lid member are made of a plastic laminated material, The inner layer on the lid side is 80-9
5 weight percent ethylene vinyl acetate copolymer,
5 to 20% by weight of polybutene-1, and the inner layer of the lid material on the container body side comprises 70 to 85% by weight of ethylene vinyl acetate copolymer and 15 to 30% by weight of polybuden-1. And a sealed container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4348697A JPH06191588A (en) | 1992-12-28 | 1992-12-28 | Tightly sealed container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4348697A JPH06191588A (en) | 1992-12-28 | 1992-12-28 | Tightly sealed container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06191588A true JPH06191588A (en) | 1994-07-12 |
Family
ID=18398754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4348697A Pending JPH06191588A (en) | 1992-12-28 | 1992-12-28 | Tightly sealed container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06191588A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006076603A (en) * | 2004-09-09 | 2006-03-23 | Okura Ind Co Ltd | Container packaging body, and heat-shrinkable multi-layer film used therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0397184U (en) * | 1990-01-24 | 1991-10-04 | ||
| JPH0472135A (en) * | 1990-07-09 | 1992-03-06 | Kureha Chem Ind Co Ltd | Container for foodstuff and method and device for manufacturing the same |
-
1992
- 1992-12-28 JP JP4348697A patent/JPH06191588A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0397184U (en) * | 1990-01-24 | 1991-10-04 | ||
| JPH0472135A (en) * | 1990-07-09 | 1992-03-06 | Kureha Chem Ind Co Ltd | Container for foodstuff and method and device for manufacturing the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006076603A (en) * | 2004-09-09 | 2006-03-23 | Okura Ind Co Ltd | Container packaging body, and heat-shrinkable multi-layer film used therefor |
| JP4563754B2 (en) * | 2004-09-09 | 2010-10-13 | 大倉工業株式会社 | Container package and heat-shrinkable multilayer film used for the container package |
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