JPH0579582B2 - - Google Patents
Info
- Publication number
- JPH0579582B2 JPH0579582B2 JP61206432A JP20643286A JPH0579582B2 JP H0579582 B2 JPH0579582 B2 JP H0579582B2 JP 61206432 A JP61206432 A JP 61206432A JP 20643286 A JP20643286 A JP 20643286A JP H0579582 B2 JPH0579582 B2 JP H0579582B2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- score
- opening piece
- lid
- piece
- 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 - Lifetime
Links
- 238000005452 bending Methods 0.000 claims description 9
- 239000007769 metal material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000005028 tinplate Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Containers Opened By Tearing Frangible Portions (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、開口片の初期の開口及び引裂きを円
滑に行うことができる部分開口蓋（以下、単にイ
ージーオープン缶蓋と称する）に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a partial opening lid (hereinafter simply referred to as an easy-open can lid) that allows smooth initial opening and tearing of an opening piece.
イージーオープン缶蓋は、罐切り等の道具を必
要とすることなく、指先の引張り力によつて缶蓋
を開けることができるものである。この利点を活
用して、現在では食料缶、炭酸飲料缶、ビール缶
等の幅広い用途に使用されている。
The easy-open can lid allows the can lid to be opened using the pulling force of the fingertips without the need for tools such as a can opener. Taking advantage of this advantage, it is now used in a wide range of applications such as food cans, carbonated beverage cans, and beer cans.
このイージーオープン缶蓋の開缶性を改善する
ため、缶蓋に関する種々の提案がこれまで行われ
ている。たとえば、缶蓋に刻設された主スコアー
と該主スコアーに近接した補助スコアーを設けた
イージーオープン缶蓋が特開昭58−149251号公報
で提案されている。 In order to improve the openability of this easy-open can lid, various proposals regarding can lids have been made. For example, an easy-open can lid has been proposed in JP-A-58-149251, which has a main score engraved on the can lid and an auxiliary score adjacent to the main score.
このように、補助スコアーを設けることによつ
て、開缶性に一定の向上がみられる。 As described above, by providing an auxiliary score, a certain improvement in can opening performance can be seen.
このイージーオープン缶蓋を開口するに必要な
力は、主として開口開始時の初期開缶力、開口片
を引き裂く力及び開口片を缶蓋から分離するとき
の力に分けられる。そして、開缶性を向上するに
は、まずこれらの力を低減する必要がある。これ
に加えて、これらの力を平滑化したとき、一定の
力で安定して開缶を行うことが可能となり、最高
度の開缶性が得られる。これらの力のうち、開口
片を引き裂くときに要する力が大きい場合、その
大きな力をかけた状態で開口片を分離することに
なる。その結果、イージーオープン缶全体に衝
撃、振動等の不測の動きが伝わり、内容物がこぼ
れだすことにもなる。
The force required to open this easy-open can lid is mainly divided into an initial opening force at the start of opening, a force for tearing the opening piece, and a force for separating the opening piece from the can lid. In order to improve can opening performance, it is first necessary to reduce these forces. In addition to this, when these forces are smoothed out, it becomes possible to stably open the can with a constant force, resulting in the highest degree of can opening performance. Among these forces, if the force required to tear the aperture pieces is large, the aperture pieces are separated while applying that large force. As a result, unexpected movements such as shocks and vibrations are transmitted to the entire easy-open can, and the contents may spill out.
そこで、本発明は、その開口片の初期の開口及
び引裂きに必要な力を軽減することにより、イー
ジーオープン缶の開缶を容易にすることを目的と
する。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to facilitate the opening of an easy-open can by reducing the force required for the initial opening and tearing of the opening piece.
本発明のイージーオープン缶蓋は、固着部を介
して引張り摘み片が設けられた開口片を取り囲む
ようにスコアーを設け、前記開口片に当該開口片
の引裂き方向に交叉してスコアーまたは薄肉部を
２〜５mmの間隔で、且つ引裂き方向の軸線に対し
て直交する線に対して45度以下の角度をもつて複
数個設け開口片の引裂き方向の曲げ剛性を低下さ
せたことを特徴とする。
In the easy-open can lid of the present invention, a score is provided so as to surround an opening piece provided with a tension knob via a fixed portion, and a score or a thin wall portion is provided on the opening piece so as to cross the tearing direction of the opening piece. It is characterized in that a plurality of openings are provided at intervals of 2 to 5 mm and at an angle of 45 degrees or less to a line perpendicular to the axis in the tearing direction to reduce the bending rigidity of the opening piece in the tearing direction.
前記スコアーまたは薄肉部は、引裂き方向と交
叉する直線状、曲線状、Ｖ字状または逆Ｖ字状の
スコアー、薄肉部のいずれであつても良い。 The score or thin wall portion may be a linear, curved, V-shaped or inverted V-shaped score or thin wall portion that intersects the tearing direction.
本発明は開口片に当該開口片の引裂き方向に交
叉してスコアーまたは薄肉部を２〜５mmの間隔
で、且つ引裂き方向に対して45度以下の角度をも
つて複数個設け開口片の引裂き方向の曲げ剛性を
低下させているから、引張り摘み片を引起しさら
に引き裂く際、開口片は引裂き方向に沿つて容易
に曲がるようになり開口初期時は開口片頂点部で
応力が高まつて初期開缶力が低下し、その後の引
裂きでは引裂き力による応力が開口片周りのスコ
アーに集中的に高まり引裂きに要する力が低くな
る。
The present invention provides an aperture piece with a plurality of scores or thin parts at intervals of 2 to 5 mm and at an angle of 45 degrees or less with respect to the tear direction of the aperture piece. Since the bending rigidity of the opening piece is lowered, when the tension knob is pulled out and further torn, the opening piece bends easily along the tearing direction, and stress increases at the apex of the opening piece at the initial stage of opening, which prevents the initial opening. The tearing force decreases, and in the subsequent tearing, the stress due to the tearing force increases intensively in the score around the opening piece, and the force required for tearing decreases.
以下、図面に示した実施例により、本発明の特
徴を具体的に説明する。
Hereinafter, features of the present invention will be specifically explained with reference to embodiments shown in the drawings.
第１図は、本実施例のイージーオープン缶蓋を
示す。 FIG. 1 shows the easy-open can lid of this embodiment.
このイージーオープン缶蓋１にはスコアー２が
刻設されており、このスコアー２で囲まれた部分
が開口片３となる。この開口片３の一部には突起
がプレス成形され、その突起に引張り摘み片４の
孔部を嵌め込んだ後で、突起をかしめることによ
り引張り摘み片４を取り付けた固着部５を形成し
ている。このようにして設けられた引張り摘み片
４を引き起こして引つ張るとき、開口片３の固着
部５側頂点３ａが開口開始点となり、開口片３は
順次スコアー２に沿つて蓋本体から引き裂かれ
る。 A score 2 is engraved on this easy-open can lid 1, and a portion surrounded by the score 2 becomes an opening piece 3. A protrusion is press-molded on a part of this opening piece 3, and after fitting the hole of the tension knob piece 4 into the protrusion, the protrusion is caulked to form a fixed part 5 to which the tension knob piece 4 is attached. are doing. When the tension knob 4 provided in this way is pulled and pulled, the apex 3a of the opening piece 3 on the fixed part 5 side becomes the opening starting point, and the opening piece 3 is sequentially torn from the lid body along the score 2. .
このとき、本実施例にあつては、開口片３の引
裂き方向６に対して直角に延在する複数のスコア
ー７を設けている。 At this time, in this embodiment, a plurality of scores 7 are provided extending perpendicularly to the tearing direction 6 of the opening piece 3.
第２図は、このスコアーと薄肉部を断面図で示
したものである。すなわち、同図ａの例では引裂
き方向６と直角にスコアー７ａを設けており、同
図ｂの例では同じく薄肉部７ｂを設けている。 FIG. 2 is a cross-sectional view of this score and the thin portion. That is, in the example shown in FIG. 5A, a score 7a is provided perpendicular to the tearing direction 6, and in the example shown in FIG.
また、第３図は、引裂き方向６に対するスコア
ー７の関係についての数例を平面図で示したもの
である。すなわち、第１図に示した直線状のスコ
アー７に代えて、同図ａ〜ｃにそれぞれ示しすよ
うに、円弧状のスコアー７1、逆Ｖ字型のスコア
ー７2またはＶ字型のスコアー７3を採用すること
もできる。 Further, FIG. 3 is a plan view showing several examples of the relationship between the score 7 and the tear direction 6. That is, instead of the linear score 7 shown in FIG. 1, an arcuate score 7 1 , an inverted V-shaped score 7 2 or a V-shaped score, as shown in FIG. 7 3 can also be adopted.
このスコアー７により、開口片３の引裂き方向
６に関する曲げ剛性が低下する。したがつて、開
口片３を引裂き方向６に沿つて引き裂くとき、そ
の引裂き方向であるＸ−Ｘ軸方向に沿つて開口片
３が簡単に曲がるようになる。これにより、開口
開始時から引裂き時は応力が開口片３の頂点３ａ
から固着部５の周り部のスコアー２に高まる。そ
の結果、開口初期の開口力を低減するのみなら
ず、開口片３をスコアー２に沿つて引き裂くこと
が容易となる。そして、この引裂きに必要な力が
小さくてすむので、開口片３を蓋本体から分離す
るときに過大な力が加わることも防止される。第
７図は開口開始から引裂き分離までの開缶力の変
動を、開口片の長手方向を横軸として表したもの
である。同図における実線は開口片３に３mm間隔
でスコアーを引裂き方向に直交向きに刻設した本
発明のイージーオープン缶蓋を開缶し場合を示
し、破線は開口片にスコアーを設けていない従来
のイージーオープン缶蓋を開缶した場合である。
この図から明らかなように本発明では初期開口か
ら引裂き分離までに要する力が小さく、特に引裂
き力及び引裂き分離力が大幅に低くなる。なお、
この第７図における試験材は板厚0.23mmのブリキ
からイージーオープン缶蓋を製作し、開口片のス
コアー残厚は60μｍとした。 With this score of 7, the bending rigidity of the opening piece 3 in the tearing direction 6 is reduced. Therefore, when the opening piece 3 is torn along the tearing direction 6, the opening piece 3 can be easily bent along the XX axis direction, which is the tearing direction. As a result, from the start of opening to the time of tearing, the stress is reduced to the apex 3a of the opening piece 3.
The score increases from 2 to 2 around the fixed portion 5. As a result, not only the opening force at the initial stage of opening is reduced, but also the opening piece 3 can be easily torn along the score 2. Since the force required for this tearing is small, application of excessive force when separating the opening piece 3 from the lid body is also prevented. FIG. 7 shows the variation in the can opening force from the start of opening to tearing and separation, with the longitudinal direction of the opening piece taken as the horizontal axis. The solid line in the figure shows the case of opening the easy-open can lid of the present invention in which scores are engraved at 3 mm intervals on the opening piece 3 in a direction perpendicular to the tearing direction, and the broken line shows the case of opening the can with the easy-open can lid of the present invention in which scores are engraved on the opening piece 3 at 3 mm intervals, and the broken line shows the case where the can is opened. This is the case when the easy-open can lid is opened.
As is clear from this figure, in the present invention, the force required from the initial opening to tear separation is small, and in particular, the tear force and tear separation force are significantly reduced. In addition,
The test material shown in FIG. 7 was an easy-open can lid made from tin plate with a thickness of 0.23 mm, and the score remaining thickness of the opening piece was 60 μm.
開口片３に複数設けたスコアーまたは薄肉部７
の相互ピツチｌ（第４図参照）は、２〜５mmとす
る。すなわち、この相互ピツチｌをこの範囲に維
持するとき、一つのスコアーまたは薄肉部７によ
り曲げ剛性が低下した開口片３の部分と他のスコ
アーまたは薄肉部７によるそれとが連続するよう
になり、引裂き力低下効果が確実となる。この相
互ピツチが５mmを越えるとき、引裂き方向６の沿
つて引裂き力が大きく変動することになり、安定
した力で引裂きを行うことができなくなる。ま
た、相互ピツチｌが２mm未満のとき、開口片３の
腰が必要以上に弱くなり、場合によつては開口片
３が部分的にちぎれることにもなる。 A plurality of scores or thin parts 7 provided on the opening piece 3
The mutual pitch l (see Figure 4) is 2 to 5 mm. That is, when this mutual pitch l is maintained within this range, the portion of the opening piece 3 whose bending rigidity is reduced due to one score or thin wall portion 7 becomes continuous with that due to the other score or thin wall portion 7, and tearing occurs. The force reduction effect is ensured. When this mutual pitch exceeds 5 mm, the tearing force will vary greatly along the tearing direction 6, making it impossible to tear with a stable force. Further, when the mutual pitch l is less than 2 mm, the stiffness of the opening piece 3 becomes weaker than necessary, and in some cases, the opening piece 3 may be partially torn off.
また、逆Ｖ字型或いはＶ字型のスコアーまたは
薄肉部７2，７3を設ける場合、そのＶ字辺が引裂
き方向であるＸ−Ｘ軸の軸線に対して直交する線
となす角度θが±45度以下とする。この角度θが
45度を越える場合、Ｘ−Ｘ軸方向に沿つて開口片
３が曲がることを容易にする剛性の低下に与える
スコアーまたは薄肉部７2，７3の影響が小さくな
る。 In addition, when providing an inverted V-shaped or V-shaped score or thin wall portions 7 2 , 7 3 , the angle θ between the V-shaped side and a line orthogonal to the axis of the XX axis, which is the tearing direction, is It should be within ±45 degrees. This angle θ is
When the angle exceeds 45 degrees, the influence of the score or the thin wall portions 7 2 and 7 3 on the reduction in rigidity that facilitates the bending of the opening piece 3 along the XX axis direction becomes small.
なお、第１図〜第３図に示した例に限らず、複
数のスコアーまたは薄肉部形成加工により曲げ剛
性を低下させる加工法も、本発明に包含される。 Note that the present invention is not limited to the examples shown in FIGS. 1 to 3, and includes processing methods in which the bending rigidity is reduced by forming a plurality of scores or thin-walled portions.
第４図は、このようにして引裂き方向６に沿つ
た開口片３の剛性を低下させたものに、更に開缶
開始時に必要な力を下げる手段を付加したもので
ある。第４図の例にあつては、固着部５の頂点５
ａと開口片３の頂点３ａとの間の距離ａ（第５図
参照）を0.4mm以下、好ましくは0.3mm以下として
いる。 FIG. 4 shows a structure in which the rigidity of the opening piece 3 along the tearing direction 6 is reduced in this way, and a means for further reducing the force required at the start of opening the can is added. In the example of FIG. 4, the apex 5 of the fixed part 5
The distance a (see FIG. 5) between a and the apex 3a of the opening piece 3 is 0.4 mm or less, preferably 0.3 mm or less.
第６図は、この距離ａが初期開缶力に与える影
響を示している。この図から明らかなように、初
期開缶力は、距離ａ＝0.4mmを境として低下し始
め、0.3mm以下ではほぼ一定の減少傾向にある。
このように開缶力に急激な低下がみられるのは、
剛性の高い固着部５の影響が開口片の頂点３ａ部
分に伝わり、応力の集中がより局部的になるもの
と考えられる。 FIG. 6 shows the effect of this distance a on the initial can opening force. As is clear from this figure, the initial can-opening force begins to decrease when the distance a = 0.4 mm, and below 0.3 mm, the initial can-opening force tends to decrease almost constantly.
This sudden drop in can opening force is due to
It is considered that the influence of the highly rigid fixed portion 5 is transmitted to the apex 3a portion of the opening piece, and the concentration of stress becomes more localized.
そのため、小さな力で開口開始を行うことがで
き、これが前述のスコアーまたは薄肉部７による
効果と相俟つて開口開始から引裂きまでの工程を
円滑に行うことが可能となる。更には、開口片３
を蓋本体から分離する際、開口片３に過大な力が
加えられることも防止されるので、その反動によ
つてイージーオープン缶本体に与えられる振動、
衝撃等も小さなものとなる。 Therefore, the opening can be started with a small force, and this, together with the effect of the score or the thin portion 7 described above, makes it possible to smoothly carry out the process from opening to tearing. Furthermore, opening piece 3
When separating the can from the lid body, excessive force is also prevented from being applied to the opening piece 3, which reduces the vibration imparted to the easy-open can body due to the reaction.
Shocks and the like will also be small.
本発明のイージーオープン缶蓋が適用される材
料は特定する必要はなく、通常用いられているブ
リキ材、アルミニウム板を含め、次に挙げるよう
なものが使用される。 There is no need to specify the material to which the easy-open can lid of the present invention is applied, and the following materials can be used, including commonly used tin plate and aluminum plate.
(1) 鉄及び鉄合金或いはアルミニウム及びアルミ
ニウム合金に代表される非鉄金属材料
(2) 前記(1)の金属材料にメツキ或いは塗装等の表
面処理を施した金属材料
(3) 前記(1)及び／または(2)の金属材料に樹脂等の
有機材料を層状に接合した複合金属材料
(4) 前記(1)及び／または(2)の異種の金属材料どう
しを層状に接合した複合金属材料
なお、本発明は主スコアーに沿つて平行に浅い
補助スコアーが刻設されたイージーオープン缶蓋
に適用しても極めて有効である。このときの補助
スコアーの形状は、通常行われているＶ字断面形
状或いはＵ字型断面形状、溝型断面形状等、局部
的に曲げ剛性を低下させる各種の断面形状とする
ことができる。(1) Non-ferrous metal materials such as iron and iron alloys, or aluminum and aluminum alloys (2) Metal materials that have undergone surface treatment such as plating or painting on the metal materials in (1) above (3) (1) and Composite metal material (4) in which dissimilar metal materials in (1) and/or (2) are bonded in layers to the metal material in (2) and/or organic material such as a resin. The present invention is also extremely effective when applied to easy-open can lids in which shallow auxiliary scores are carved parallel to the main score. The shape of the auxiliary score at this time can be various cross-sectional shapes that locally reduce the bending rigidity, such as the commonly used V-shaped cross-sectional shape, U-shaped cross-sectional shape, or groove-shaped cross-sectional shape.
以上に説明したように、本発明のイージーオー
プン缶蓋においては、開口片の曲げ剛性がスコア
ーまたは薄肉部により低下されているので、小さ
な力で開口片を蓋本体から引き裂くことができ
る。そのために、イージーオープン缶蓋の開缶性
が優れたものとなる。
As explained above, in the easy-open can lid of the present invention, the bending rigidity of the opening piece is reduced by the score or the thin wall portion, so the opening piece can be torn off from the lid body with a small force. Therefore, the easy-open can lid has excellent can opening performance.
第１図は本発明実施例のイージーオープン缶蓋
を示す平面図であり、第２図はその缶蓋の開口片
に設けられたスコアー、薄肉部の例を断面図で示
し、第３図は同じくその機械加工部の数例を平面
図で示し、第４図は初期開缶力を下げるための手
段を付加した例を示し、第５図は第４図に示した
距離ａを説明する図である。また、第６図は、固
着部の頂点と開口片の頂点との距離が初期開缶力
に与える影響を示す図であり、第７図は開口開始
から引裂き分離までの開缶力の変動を示すグラフ
である。
FIG. 1 is a plan view showing an easy-open can lid according to an embodiment of the present invention, FIG. 2 is a sectional view showing an example of the score and thin wall portion provided on the opening piece of the can lid, and FIG. Similarly, several examples of the machined parts are shown in plan views, FIG. 4 shows an example in which a means for lowering the initial can opening force is added, and FIG. 5 is a diagram explaining the distance a shown in FIG. 4. It is. Furthermore, Fig. 6 is a diagram showing the influence of the distance between the apex of the fixed part and the apex of the opening piece on the initial can-opening force, and Fig. 7 shows the variation in the can-opening force from the start of opening to the tear separation. This is a graph showing.
Claims (1)
口片を取り囲むようにスコアーを設け、前記開口
片に当該開口片の引裂き方向に交叉してスコアー
または薄肉部を２〜５mmの間隔で、且つ引裂き方
向の軸線に対して直交する線に対して45度以下の
角度をもつて複数個設け開口片の引裂き方向の曲
げ剛性を低下させたことを特徴とする開缶性の優
れたイージーオープン缶蓋。 ２ 引張り摘み片の固着部の頂点と開口片の頂点
部のスコアーとの距離を0.4mm以下としたことを
特徴とする特許請求の範囲第１項記載の開缶性の
優れたイージーオープン缶蓋。[Scope of Claims] 1. A score is provided so as to surround an opening piece provided with a tension knob via a fixed part, and a score or a thin wall portion is provided on the opening piece in a direction crossing the tearing direction of the opening piece. A can opening property characterized by reducing the bending rigidity of the opening piece in the tearing direction by providing a plurality of opening pieces at intervals of 5 mm and at an angle of 45 degrees or less with respect to a line perpendicular to the axis in the tearing direction. Excellent easy-open can lid. 2. An easy-open can lid with excellent can opening performance according to claim 1, characterized in that the distance between the apex of the fixed part of the tension knob and the score of the apex of the opening piece is 0.4 mm or less. .
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61206432A JPS6367252A (en) | 1986-09-02 | 1986-09-02 | Easy open can cover having excellent can opening property |
| MYPI87001059A MY102138A (en) | 1986-09-02 | 1987-07-18 | Easily openable easy open end |
| KR1019870007981A KR930012212B1 (en) | 1986-09-02 | 1987-07-22 | Easily openable easy open end |
| EP87306802A EP0262767B1 (en) | 1986-09-02 | 1987-07-31 | Easily openable easy open end |
| MX007543A MX170453B (en) | 1986-09-02 | 1987-07-31 | EXTREME EASY OPENING STOPPER |
| CN86107457A CN1007231B (en) | 1986-09-02 | 1987-07-31 | End wall to be readily opened |
| DE8787306802T DE3779240D1 (en) | 1986-09-02 | 1987-07-31 | EASY TO OPEN LID. |
| SG794/92A SG79492G (en) | 1986-09-02 | 1992-08-07 | Easily openable easy open end |
| HK843/92A HK84392A (en) | 1986-09-02 | 1992-10-29 | Easily openable easy open end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61206432A JPS6367252A (en) | 1986-09-02 | 1986-09-02 | Easy open can cover having excellent can opening property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6367252A JPS6367252A (en) | 1988-03-26 |
| JPH0579582B2 true JPH0579582B2 (en) | 1993-11-04 |
Family
ID=16523277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61206432A Granted JPS6367252A (en) | 1986-09-02 | 1986-09-02 | Easy open can cover having excellent can opening property |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6367252A (en) |
-
1986
- 1986-09-02 JP JP61206432A patent/JPS6367252A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6367252A (en) | 1988-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |