JPH07206042A - Heat shrinkable cover - Google Patents
Heat shrinkable coverInfo
- Publication number
- JPH07206042A JPH07206042A JP657394A JP657394A JPH07206042A JP H07206042 A JPH07206042 A JP H07206042A JP 657394 A JP657394 A JP 657394A JP 657394 A JP657394 A JP 657394A JP H07206042 A JPH07206042 A JP H07206042A
- Authority
- JP
- Japan
- Prior art keywords
- tab
- lid
- tabs
- skirt portion
- notches
- 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
- Wrappers (AREA)
- Packages (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、熱収縮性蓋（以下シ
ュリンク蓋と言う）に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat shrinkable lid (hereinafter referred to as a shrink lid).
【０００２】[0002]
【従来の技術】包装容器に蓋を取付けるには、例えば材
料の弾性を利用して、蓋を容器に嵌合したり、ヒートシ
ールにより固定する方法がある。2. Description of the Related Art To attach a lid to a packaging container, there is a method of fitting the lid to the container or fixing it by heat sealing by utilizing the elasticity of the material.
【０００３】さらに延伸シートや、延伸フィルムの熱収
縮性を利用して、蓋を加熱収縮させ、容器に固着する方
法もある。この方法は蓋の取付けが容易であり、かつ強
固に取付けることができる利点がある。Further, there is a method in which the lid is heat-shrinked and fixed to the container by utilizing the heat shrinkability of the stretched sheet or the stretched film. This method has an advantage that the lid can be easily attached and firmly attached.
【０００４】[0004]
【発明の課題】しかしながら、このようなシュリンク蓋
は、容器本体の開口部周辺に、合成樹脂の収縮によって
取付けるものであるから、そのままでは取り外すのがた
いへん難しく、例えばはさみで切るなどの方法が必要と
なる。However, since such a shrink lid is attached around the opening of the container body by shrinkage of the synthetic resin, it is very difficult to remove it as it is, and a method such as cutting with scissors is required. Becomes
【０００５】そのため、蓋の周辺にタブを設けている。
しかし、図５および図６に示すように、このようなタブ
２は、合成樹脂フィルム又はシート１を打ち抜く際に、
原材料の無駄を省くため、延伸方向即ち二軸延伸の場合
矢印で示すシート１の長さ方向と横断方向に対してほぼ
４５°の角度をもって設けられる。Therefore, a tab is provided around the lid.
However, as shown in FIG. 5 and FIG. 6, such a tab 2 is provided when punching out the synthetic resin film or sheet 1.
In order to reduce waste of raw materials, in the stretching direction, that is, in the case of biaxial stretching, the sheet 1 is provided at an angle of about 45 ° with respect to the length direction of the sheet 1 and the transverse direction.
【０００６】それ故、打ち抜いた蓋材３を成形した後、
容器に被せて熱収縮させ、使用時にタブ２を引張って開
封しようとすると、タブ２による引裂き方向が延伸方向
と異なるため、引裂き線が真直ぐに延びず途中で収斂し
てしまうようなことがしばしば生じる。Therefore, after molding the punched lid member 3,
If you try to open the container by covering it with heat and shrinking it and pulling the tab 2 when using it, the tearing line by the tab 2 is different from the stretching direction, so the tearing line does not extend straight and often converges on the way. Occurs.
【０００７】そのため、タブ２の蓋に連続する部分にＶ
ノッチを設ける試みがなされている。しかしながら、図
７に示すように、シュリンク蓋４を容器５に被せて熱収
縮する際に、容器５の開口部６周辺に拘束される蓋のス
カート部７と拘束されないタブ２とに収縮率の差が生
じ、収縮後は、図８に示すように、Ｖノッチ８、８の山
が低くかつ平らになり、さらにタブ２の両側との間に距
離が生じてしまう。このため、開封時にタブ２を引張る
と、タブ２からＶノッチ８、８の山に達するまでに裂目
が生じ、結局Ｖノッチ８、８が役に立たず、引裂き線が
不規則になってしまう。Therefore, the portion of the tab 2 that is continuous with the lid is V
Attempts have been made to provide notches. However, as shown in FIG. 7, when the shrink lid 4 is covered on the container 5 and heat-shrinked, the shrinkage ratio of the shrinkage ratio between the skirt portion 7 of the lid constrained around the opening 6 of the container 5 and the tab 2 not constrained is reduced. After the contraction, after the contraction, as shown in FIG. 8, the peaks of the V notches 8 and 8 become low and flat, and further, a distance is generated between both sides of the tab 2. For this reason, if the tab 2 is pulled at the time of opening, a crack is formed from the tab 2 to the peaks of the V notches 8 and 8, and eventually the V notches 8 and 8 are useless and the tear line becomes irregular.
【０００８】そこで、この発明の課題は、所定のＶノッ
チから引裂き線が真直ぐに延びるようなシュリンク蓋を
提供することである。Therefore, an object of the present invention is to provide a shrink lid in which a tear line extends straight from a predetermined V notch.
【０００９】[0009]
【課題を解決するための手段】上記の課題を解決するた
め、この発明は、頂壁と、その周縁に設けられたスカー
ト部と、このスカート部に設けられたタブから成る蓋に
おいて、この蓋は二軸延伸合成樹脂フィルム又はシート
から成り、前記タブをこのフィルム又はシートの延伸方
向に設け、前記スカート部に前記タブの両側縁から延び
るＶノッチを設け、このＶノッチのタブに続く一辺をタ
ブの中心線に対してほぼ平行かそれより内側に傾けたこ
とを特徴とする。In order to solve the above problems, the present invention relates to a lid comprising a top wall, a skirt portion provided on the peripheral edge thereof, and a tab provided on the skirt portion. Is a biaxially stretched synthetic resin film or sheet, the tabs are provided in the stretching direction of the film or sheet, V notches extending from both side edges of the tabs are provided in the skirt portion, and one side of the V notches following the tabs is provided. It is characterized in that it is inclined substantially parallel to or inward of the center line of the tab.
【００１０】[0010]
【作用】タブに続くＶノッチの一辺がタブに対して真直
ぐに延びているので、熱収縮してもＶノッチの山があま
り平らにならず、タブの両側からの距離がそれほど離れ
ない。そのためタブに引張力を加えたとき、Ｖノッチの
山から丁度裂目が始まり、またタブが蓋材料の延伸方向
に設けられているため、裂目が真直ぐに延びる。Since one side of the V-notch following the tab extends straight with respect to the tab, the V-notch peaks do not become flat even when heat-shrinked, and the distance from both sides of the tab is not so great. Therefore, when a tensile force is applied to the tab, the fissure just starts from the peak of the V notch, and the fissure extends straight because the tab is provided in the extending direction of the lid material.
【００１１】[0011]
【実施例】以下、この発明の実施例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.
【００１２】図１に示すように、この発明のシュリンク
蓋１０は、二軸延伸合成樹脂フィルムまたはシートを成
形したものであって、頂壁１１とその周縁から垂下する
スカート部１２、スカート部１２に設けられたタブ１３
及びタブ１３の両側縁からスカート部１２に延びるＶノ
ッチ１４から成る。As shown in FIG. 1, the shrink lid 10 of the present invention is formed by molding a biaxially stretched synthetic resin film or sheet, and has a top wall 11 and a skirt portion 12 and a skirt portion 12 which hang down from the periphery thereof. Tab 13 provided on the
And a V notch 14 extending from both side edges of the tab 13 to the skirt portion 12.
【００１３】前記タブ１３及びＶノッチ１４は、１か所
でもよいが複数設けてもよい。The tab 13 and the V notch 14 may be provided at one place, or a plurality of them may be provided.
【００１４】前記タブ１３は図の矢印で示すように、蓋
材料である二軸延伸合成樹脂フィルムの延伸方向に設け
られている。As shown by the arrow in the figure, the tab 13 is provided in the stretching direction of the biaxially stretched synthetic resin film which is the lid material.
【００１５】前記Ｖノッチ１４、１４のタブ１３に続く
一辺１５、１５は、図２に示すように、タブ１３の中心
線Ｃに対してほぼ平行になっている。また、鎖線で示す
ように、多少内側に傾いていてもよい。The sides 15 and 15 of the V notches 14 and 14 that follow the tab 13 are substantially parallel to the center line C of the tab 13, as shown in FIG. In addition, as shown by a chain line, it may be inclined slightly inward.
【００１６】前記シュリンク蓋１０は、丸形、多角形
等、形状は問わない。The shrink lid 10 may have any shape such as a round shape or a polygonal shape.
【００１７】また、頂壁１１に、図３のような膨出部１
６が設けられていてもよく、或は図示しない凹凸所やリ
ブなどを設けることもできる。Further, the bulging portion 1 as shown in FIG.
6 may be provided, or an unillustrated uneven portion, rib, or the like may be provided.
【００１８】いま、図４の(イ) に示すようなシュリンク
蓋１０を容器に被せて熱収縮させると、同図(ロ) に示す
ように、スカート部１２と共にタブ１３も収縮するが、
スカート部１２は、容器の開口部周辺に拘束されて収縮
が制限されるのに対してタブ１３は拘束されないため、
Ｖノッチ１４、１４の山はやや平らになる。しかし、Ｖ
ノッチ１４、１４に続く一辺１５、１５が正面から見て
ほぼ垂直方向に立ち上っているため、収縮後も同図(ロ)
のようにタブ１３の両側縁に近い位置にノッチの山がく
る。Now, when the container is covered with the shrink lid 10 as shown in FIG. 4 (a) and heat-shrinked, the skirt portion 12 and the tab 13 also shrink as shown in FIG. 4 (b).
The skirt portion 12 is constrained around the opening of the container to limit the contraction, whereas the tab 13 is not constrained.
The peaks of the V notches 14 and 14 are slightly flat. But V
The sides 15 and 15 following the notches 14 and 14 rise up in a substantially vertical direction when viewed from the front, so that the same figure (b) is obtained even after contraction.
The notch peaks are located near the both side edges of the tab 13 as shown in.
【００１９】従って、タブ１３を引張ると山から引裂き
線１７が始まり、不定な位置から不規則に裂けることが
ない。Therefore, when the tab 13 is pulled, the tear line 17 starts from the crest and is not torn irregularly from an irregular position.
【００２０】[0020]
【効果】この発明によれば、以上のように、シュリンク
蓋のスカート部に蓋材料の延伸方向のタブを設け、この
タブの両側縁に設けたＶノッチの一辺を、タブの中心線
とほぼ平行かそれより内側に傾けたので、熱収縮後にも
Ｖノッチの山がタブの両側縁から遠ざかることがほとん
どなく、従って蓋の開封時にタブを引張ると、自然にＶ
ノッチの山の部分に力が加わり、そこから蓋が引裂かれ
るため、不規則な引裂き線が発生しない。According to the present invention, as described above, the skirt portion of the shrink lid is provided with the tab in the extending direction of the lid material, and one side of the V notch provided on both side edges of the tab is substantially the center line of the tab. Since it is parallel or tilted inwards, the V notch ridges hardly move away from the side edges of the tab even after heat shrinkage, so if the tab is pulled when the lid is opened, V
Force is applied to the notch peaks and the lid is torn from it, so that an irregular tear line does not occur.
【００２１】しかもタブが延伸方向に設けられているた
め、引裂き線が真直ぐに延びて蓋を横断し、開封が極め
て容易に行なわれる。Moreover, since the tab is provided in the extending direction, the tear line extends straight and crosses the lid, so that the opening can be performed very easily.
【図１】この発明のシュリンク蓋の一例を示す斜視図FIG. 1 is a perspective view showing an example of a shrink lid of the present invention.
【図２】同上のシュリンク蓋のタブを示す拡大正面図FIG. 2 is an enlarged front view showing a tab of the above-mentioned shrink lid.
【図３】シュリンク蓋の他の例を示す斜視図FIG. 3 is a perspective view showing another example of the shrink lid.
【図４】シュリンク蓋の収縮作用を示す一部拡大正面図FIG. 4 is a partially enlarged front view showing the contracting action of the shrink lid.
【図５】従来の蓋材の打ち抜き例を示す平面図FIG. 5 is a plan view showing an example of punching a conventional lid member.
【図６】同上の他の例を示す平面図FIG. 6 is a plan view showing another example of the above.
【図７】従来のシュリンク蓋の熱収縮前の状態を示す正
面図FIG. 7 is a front view of a conventional shrink lid before heat shrinking.
【図８】従来のシュリンク蓋を熱収縮させた状態を示す
正面図FIG. 8 is a front view showing a state in which a conventional shrink lid is heat-shrinked.
１０ シュリンク蓋 １１ 頂壁 １２ スカート部 １３ タブ １４ Ｖノッチ １５ Ｖノッチの一辺 １７ 引裂き線 Ｃ タブの中心線 10 Shrink lid 11 Top wall 12 Skirt portion 13 Tab 14 V notch 15 One side of V notch 17 Tear line C Center line of tab
Claims (1)
部と、このスカート部に設けられたタブから成る二軸延
伸合成樹脂フィルム又はシートによって形成された蓋に
おいて、前記タブを前記フィルム又はシートの延伸方向
に設け、前記スカート部に前記タブの両側縁から延びる
Ｖノッチを設け、このＶノッチのタブに続く一辺をタブ
の中心線に対してほぼ平行かそれより内側に傾けたこと
を特徴とする熱収縮性蓋。1. A lid formed by a biaxially stretched synthetic resin film or sheet comprising a top wall, a skirt portion provided on the periphery of the top wall, and a tab provided on the skirt portion. It is provided in the stretching direction of the sheet, and the skirt portion is provided with V notches extending from both side edges of the tab, and one side of the V notch following the tab is substantially parallel to the center line of the tab or inclined inwardly. Characteristic heat shrinkable lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP657394A JPH07206042A (en) | 1994-01-25 | 1994-01-25 | Heat shrinkable cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP657394A JPH07206042A (en) | 1994-01-25 | 1994-01-25 | Heat shrinkable cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07206042A true JPH07206042A (en) | 1995-08-08 |
Family
ID=11642084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP657394A Pending JPH07206042A (en) | 1994-01-25 | 1994-01-25 | Heat shrinkable cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07206042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001322657A (en) * | 2000-05-15 | 2001-11-20 | Asahi Kasei Corp | Molded sheet for shrink cover and packaging body with shrink cover |
-
1994
- 1994-01-25 JP JP657394A patent/JPH07206042A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001322657A (en) * | 2000-05-15 | 2001-11-20 | Asahi Kasei Corp | Molded sheet for shrink cover and packaging body with shrink cover |
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