公开(公告)号：US3756449A

公开(公告)日：1973-09-04

申请号：US3756449D

申请日：1970-11-24

申请人： BROKEN HILL PTY CO LTD

发明人： SHACKLEFORD R ,  DALLI A ,  DEBENHAM M

IPC分类号： B65D17/34 ,  B65D17/20

CPC分类号： B65D17/404

摘要： The disclosure of this specification relates to an easy-opening closure for a can end wherein the closure is defined by a portion of the end which is completely sheared from the end except at a plurality of positions defining retaining means. The material defining the retaining means is cold worked to be in tension, the material being deformed beyond its elastic limit so that removal of the closure is more readily achieved by applying a force to a pull tab connected to the closure. If the can is required to be hermetically sealed, a sealant is applied to at least the completely sheared regions of the can end.

摘要翻译： 本说明书的公开内容涉及罐头端部的容易开启的封闭件，其中封闭件由端部的一部分限定，该部分从端部完全剪切，除了在限定保持装置的多个位置处。 限定保持装置的材料被冷加工以处于张紧状态，材料变形超过其弹性极限，从而通过向连接到封闭件的拉片施加力来更容易地实现封闭件的移除。 如果罐被要求密封，则密封剂至少施加到罐端的至少完全剪切的区域。

公开(公告)号：US3759206A

公开(公告)日：1973-09-18

申请号：US3759206D

申请日：1971-09-15

申请人： BROKEN HILL PTY CO LTD

发明人： DALLI A ,  DEBENHAM M ,  SCHACKLEFORD R

IPC分类号： B21D51/38 ,  B21D51/44 ,  B65D17/32 ,  B21D51/00

CPC分类号： B21D51/383 ,  B65D17/401 ,  B65D2205/00

摘要： This specification dislcoses an easy-opening closure for a can end which comprises an opening formed by partially severing a portion from the can end to leave the portion attached thereto by an integral neck, and a closure member formed from said severed portion and which is larger than said opening. The sheet metal adjacent the free edge of the opening is downwardly turned while the sheet metal adjacent the free edge of the closure member is upwardly turned, said free edges being in contact with or in close proximity to each other. A sealant is applied at least in the region of the free edges if required by the purpose for which the can end is to be used. The specification also discloses a method of forming such a closure comprising the steps of: forming an upwardly directed bulge in the sheet metal, thus stretching the sheet; partially severing a central portion of said bulge, to define an opening and said severed portion defining a closure member for said opening, and displacing the closure member downwardly so that its free edge is below the free edge of the opening; partially flattening the thus truncated bulge of sheet metal around said opening to reduce its size, and turning downwardly said free edge defining said opening; partially flattening the closure member to increase its size, and turning upwardly said free edge of the closure member, the free edge portion of said closure member being in contact with or in close proximity to said free edge defining said opening, and applying a sealant at least in the region of the free edges of the opening and the closure member to seal the closure if required by the purpose for which said container member is to be used.

摘要翻译： 本说明书对于罐头端部具有容易打开的封闭件，其包括通过部分地从罐端部分开的部分切口而形成的开口，以通过整体的颈部留下附接到其上的部分，以及由所述切断部分形成并且较大 比开口。 邻近开口的自由边缘的金属板向下转动，而邻近封闭构件的自由边缘的金属板向上转动，所述自由边缘彼此接触或彼此靠近。 至少在自由边缘的区域中施加密封剂，如果需要使用罐端的目的的话。 本说明书还公开了一种形成这种封闭件的方法，包括以下步骤：在金属片中形成向上指向的凸起，从而拉伸该片材; 部分地切断所述凸起的中心部分以限定开口，并且所述切断部分限定用于所述开口的封闭构件，并且使封闭构件向下移动，使得其自由边缘在开口的自由边缘下方; 使所述开口周围的这样截断的金属片凸起部分地变平，以减小其尺寸，并向下转动限定所述开口的所述自由边缘; 部分地使封闭构件变平以增加其尺寸，并且向上转动所述封闭构件的自由边缘，所述封闭构件的自由边缘部分与限定所述开口的所述自由边缘接触或紧密接近，并且在 至少在开口和封闭构件的自由边缘的区域中，如果需要使用所述容器构件的目的，则密封封闭件。