CN1101618A - 快速扣紧挠性盖 - Google Patents
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Abstract
一种快速扣紧的挠性容器盖具有平的盖面和从
盖面垂直延伸的环形周缘以便环绕并扣紧容器的环
形唇部。“环形”包括各种闭合环形如矩形。周缘具有
间隔开的板,从周缘其余部分向内倾斜以接合容器唇
部的下侧,这有助于将盖保持在容器上,当周缘基本
没有周向撕开线的情况下当容器掉落时使盖可避免
突然松脱的问题,且可防止同向撕开线的意外撕开。
倾斜的板在成对的切口间形成,可通一对垂直切口而
使限定板的部分分离,以便打开容器。
Description
大型容器的塑料盖当然是公知的且有着广泛的应用。然而,其局限性在于,当摔落时塑料盖由于多少有些挠性而容易从容器上突然松脱。当容器的尺寸为半加仑或更大时这个问题更为突出,因此,现今大容器的塑料盖通常用绕其圆周的金属丝环保持在位。这当然会显著增加容器的成本,也造成使用不便。
防止容器摔落时突然松脱的另一个解决办法公开于美国专利第4,718,571号中,其中,采用使盖的裙部的下部向上折起而与容器的唇部接合。撕去圆周的“分离槽”或弱化线60(图4A)可打开该系统。
但是业已发现,当大约半加仑或更大的较大容器摔落时,所装液体中产生的震动波对盖的冲击可能足以使弱化线断裂。因此,上述美国专利的设计在摔落强度方面具有局限性。同样,其它利用圆周撕开带的设计如美国专利第4,735,337号专利的设计也具有类似的局限性。
按照本发明,一般由挠性塑料制成的容器的快速扣紧盖与同类现有技术的设计相比较可显著增加摔落强度,也可减少对为将盖保持在容器唇部的金属丝环的需要。因此,由于这种盖可以用类似于现有技术的盖的方式用塑料模制,无需增加成本或几乎不增加成本,故而是一种重大改进,而且节约了成本。
除了高的摔落强度外,本发明的盖可以方便地打开,由于这种盖有一定的挠性,手劲不大的人也可用手打开。
按照本发明,一种挠性容器盖具有一平的盖面和一环形的从盖面垂直延伸的周缘,包住并扣紧容器的环形唇部。该周缘具有多个间隔开来的,从所述周缘其余部分向内弯曲的板,用于接合容器唇部的下侧,这有助于将盖保持在容器上。按照本发明,上述周缘可以基本不设周向的撕开线装置。
上述向内弯曲的板可仅沿一端连接于周缘的其余部分,因而它们可以向外挠曲,然后向内弹回以便将盖装在容器上。
一般来说,一环形壁从平的盖面垂直延伸,与上述环形周缘呈向内间隔开来的关系,从而在周缘和环形壁之间限定了一条环形凹槽,该凹槽用于容纳容器唇部。该环形壁最好在到达向内弯曲的,间隔开来的板的外端之前的一点上终止。向内弯曲的,间隔开来的板最好以其向内弯曲的位置模制,因此它们可以向外挠曲,但当不再受弯曲应力时则倾向于向内弹回。
每个向内弯曲的板最好在环形周缘的分离部分上成形或限定。每个分离部分都在成对的切口间形成。因此,通过使用打开包装的标准小刀进行的垂直切割使上述部分侧向分离即可打开盖。
在上述切割之后,切后的周缘的部分可形成摆动地连接于盖的其余部分的上缘,因此,使切后的周缘部分可向上折,使倾斜的板移出与容器唇部的接合状态,这使盖可被打开。
或者,承载着上述板的周缘的部分可只在侧向连接于盖的其余部分。在这种实施例中,上述部分可通过垂直切割(切割沿着垂直于周向的线进行)被完全切除。
本发明的盖,以及其它盖可以安装在容器上,盖的环形周缘限定一向内或向外凸出的环形密封件,该密封件与在容器唇部上相应的向外或向内凸出的配合件密封地接合。一般来说,环形周缘限定一向内凸出的环形密封件,而容器限定一朝外的凹槽(配合件)。
按照本发明,上述密封件和环形配合件中至少一个覆盖着印上的或涂上的弹性的环形密封层,用作垫圈。印刷或涂刷过程可与印制容器上的标记同时进行,其区别是不用油墨而是通过普通的印刷或涂刷方法但使用液态材料如乳胶进行。液态材料如乳胶干后成为一挠性层覆盖在上述盖和容器的相互配合的部分上,最好覆盖在容器上的朝外的凹槽上。
这种环形密封层的厚度可以为大约0.01英寸左右,甚至更薄。如果环形密封件和容器唇部的配合件模制时达到精确的公差,那么上述的薄的环形密封层可提供极好的防漏密封。上述自动的方法成本很低,可消除对密器和盖组件中对橡胶密封圈的需要。
本发明的另一个优点是,本发明的盖和容器可以根据需要为矩形、圆形或椭圆形截面。
在某些推荐实施例中,本发明的盖,其环形周缘可通过一环形圈连接于盖的其余部分,该环形圈占据一个与平的盖面的大部分间隔开来但与其平行的平面。上述环形圈可在临近每个倾斜的板处形成开口,开口的目的是使用于形成间隔开来的,向内弯曲的板的横芯部分可以撤出,从而大大简化制造盖的模子,而不显著降低盖的密封性能。这也使环形周缘可以基本上不带有开口。
或者,向内倾斜的板也可以从在环形周缘上形成的临近开口向内延伸,因而在模制过程中使模芯部分可伸过开口以形成向内倾斜的板。
现在对照以下附图详述本发明的推荐实施例:
图1是按照本发明的模制的盖的剖视图;
图2是图1所示盖的圆周的一部分的放大立体图;
图3至6是沿图2中相应剖面线的剖视图,剖面线的编号与图号相应;
图7所示放大剖视图表示本发明盖的另一实施例的圆周的一部分,图中盖安装在容器上;
图8是类似于图7的视图,图中未画容器,表示周缘的部分可向外摆动,使向内倾斜的板脱开接合状态;
图9所示平面图表示本发明盖的另一实施例的圆周的一部分;
图10和11是沿图9中相应剖面线的剖视图,剖面线编号与图号相应;
图12是本发明的盖的另一实施例的局部立体图;
图13是图12所示实施例的局部的视图;
图14和15是沿图13中相应剖面线的剖视图,剖面线的编号与图号相应;
图16是类似于图15的剖视图,但表示盖正处在安放在容器上的过程中;
图17是类似于图16的剖视图,表示盖已安装在容器上;
图18所示局部立体图表示本发明的盖的另一实施例的圆周的一部分;
图19是沿图18中线19-19的剖视图,表示盖正处于在容器上安放的过程中;
图20是类似于图19的剖视图;表示盖已在容器上处于锁固位置;
图21是一种矩形盖和容器的立体图,这种盖和容器可以是前述任一实施例的结构;
图22是按照本发明的另一实施例的剖视图。
现参阅图1至6,本发明的快速扣紧的,挠性盖10的一个实施例具有一个平的盖面12和一个从盖面12垂直延伸的环形周缘14,环绕并扣紧容器的环形唇。
术语“环形”不只包括圆环形,而且也包括其它形状如椭圆或矩形,这是由于本发明也可用于除圆形以外的其它截面的容器。
盖10也具有一环形壁16,它从平的盖面12垂直延伸,与环形周缘14呈向内间隔开来的关系,从而在周缘和环形壁之间形成一环形凹槽18,用来容纳容器的唇部。还具有一内部的环形凹槽20,凹槽20内如需要可设有多个任何需要形状的径向肋以调节盖10的那个部分的挠性和强度。
按照本发明,环形周缘14限定多个间隔开来的板22,板22相对于周缘的其余部分向内倾斜,其位置可接合容器的唇部的下侧,说明书下面所公开的实施例如图16和17画出了这种情形。基本上,当盖10应用于容器上时,由于容器唇部的送进,板22被瞬时向外推,然后板22快速弹回其原来的形状,将盖10锁定在容器上。板22在其模制时的向内倾斜位置上距环形壁16至少2mm,以便为构成该结构的钢模部分提供空间。
板22仅在其下缘24连接于周缘14的其余部分,板22的自然的,模制形状是图1至6所示的向内倾斜的形状。因此,板22可向外挠曲,但一当允许时就再次向内迅速弹回。周缘14最好在其下部自由端形成一环形的,加厚的加固部分40以增强圆周强度。
盖一般有两至六个向内倾斜的板22,一般绕盖的圆周等距分布。在图1至6所示实施例中,板22在三个侧面由一侧向开口26包围,以便于这种结构的模制。
突起的环形圈27将周缘14连接于平的盖面12。环圈27占据平行于盖面12的平面,但是与其间隔开来。
盖10在容器19(图3)上的密封可由壁16和容器唇部21,盖顶环形区域28和容器唇部21之间的环形密封,以及可密封地压容器唇部21上的盖10的外部区域30而实现。还可设置橡胶密封圈33以利于密封。
从图16和17可以看出类似于盖10结构的一个盖是如何通过板22的锁固作用永久锁固在容器上的情况。为了打开盖10,只需用刀或类似物从切口16或32作垂直切割即可。为了作如线条34所示的垂直切割,要在每块板22的每侧作垂直切割。然后才可能转动周缘14的已被切割线条34隔开的部分36,使部分36沿减薄的弯曲弱化线向外摆动,如图4所示。当然,这种弯曲使板22与容器唇部脱离接合状态。而且盖10的圆周强度也被显著削弱了,这是由于下部环形加固部分40被切断而弱化,这样一般通过手动剥离作用即可卸掉挠性盖10。
如果垂直切割是在开口26处,那么,板22被完全切离盖10,也可将盖打开。
如果需要,环形凹痕41也可不要,使周缘14的环形壁更为平、直,例如,图22即未设凹痕66。
这样形成的挠性塑料盖具有极高抗摔落能力,当摔落时不会从大型的,装满的容器上突然松脱。同时,如上所述,盖从容器上卸下时也很方便,而且可以容易地再盖在容器上以提供对容器的密封。摆动部分38可弹回并与容器19的唇部相接合,以便再次封闭容器。
现在参阅图7和8,图中表示本发明盖的另一种实施例,在结构和功能上除另作说明外与前述实施例相似。
如图7所示,盖10a盖在桶64的唇部62上。盖10a上形成一个与前述实施例相似的环形周缘14a。图7所示剖视图类似于通过图2的凹下部分66的剖视图,图8表示周缘14a的部分36a可被垂向切割和向外摆动,从而使斜的板22a位移的情况,这与前述实施例相似。
设有环形壁16a,其作用与前述实施例相似。
如果需要,但并非必要的是,一条环形密封线的可装配在由盖10a的向内凸出的环形密封件70上形成的一凹槽中,密封件70密封地装在桶的唇部62的朝外的环形凹槽72中。按照本发明,由于设有印上的或涂上的弹性密封层74用作垫圈,因而显著改善了密封性能。这种密封层可以是弹性乳胶,可以通过普通的印刷或涂刷方法施加在向内凸出的环形密封件70上或朝外的环形凹槽上,特别是在桶64加标签时通过印刷方式施加。凹槽72最好以上述方法设置环形密封层74。因此,在盖和容器之间形成有效的弹性密封而无需另外设置橡胶圈等,因而可显著降低成本。密封层74的厚度一般大约为0.002至0.05英寸,例如大约0.01英寸。
为了有效地密封盖的周缘14a,作为替代或另外设置在凹槽72中的弹性密封圈。
现参阅图9至11,图中示出容器盖的另一种设计,除另有说明外,与图1至6所示的盖相似。
盖10c设有与前述实施例相似的平的盖面12c和环形周缘14c。在此实施例中,向内延伸的,间隔开来的板22c是与环形周缘14c整体模制的,这与前述实施例相同,但是每个板22c配有上部开口76,开口76的设置是为了使模子的部分能够形成板22c,在环形周缘14a中没有侧面开口,如前所述,在板的两侧作垂向切割,可形成切口括住向内延伸的板22c以利于板22c的上摆,或将其完全卸去。
现在参阅图12至15,其中公开了本发明的挠性盖的另一种实施例,除另有说明外,与图1至6所示实施例相似。
如图所示,盖10c具有一平的盖面12c和一环形周缘14c,周缘14c从盖而垂直延伸并适于围绕并扣紧容器的唇部。如图所示,倾斜的板22c与图1至6所示实施例有相似的结构和功能。周缘14c的底部形成一环形加强肋40c,用于加强周缘,直至肋40c被切割以便打开盖。
如前所述,板22c可由切口26c括住,使板22c可被卸去。
在本实施例中,设有一内部的环形壁16c,连接于环形圈27c,圈27c占据一个平行于平的盖面12c且与其间隔开来的平面,但是与图1至6所示实施例有些不同的结构。
现参阅图16和17,其中表示盖10c放置在桶缘62上的情况。图16表示盖降在桶的唇部62上,使板22c向外摆动位移。然后,如图17所示,当盖10c完全座落在桶的唇部上时,板22c快速弹回其原来的形状。因此,盖10c永久地装在桶上直至通过使用各切口26c,或类似于前述开口32的其它切口,切插板22c为止。
现参阅图18至20,图中表示一种除另有说明外类似于图12至17所示结构的设计。盖10d具有平的盖面12d和环形周缘14,这与前述实施例相似。也设有功能与前述实施例相似的向内弯曲的板22d。但是,在此实施例中,板22d载有与其整体模制的面向外部的托架80,托架80有一凸片82。
在每块板22d两侧也设有切口26d。
托架80和凸片82的目的是便于将盖从模子上取下。模子的占据和形成托架80的凹槽84的部分在完成模制过程时可被侧向向外拉,从而拉动托架80和板22d。这使新成形的板22d超越模子的形成凹槽86的部分的障碍,从而有利于分模和新成形的盖的卸下。当松卸时,板22d迅速弹回其需要的位置,其动作方式与图19和20所示方式相似,图19和20表示将盖10d设置于桶的唇部62上的情况,放置方式与前述实施例相似。
与前述实施例中的情况一样,盖10d因此而永久地装在桶的唇部62上,直至从开口26d开始垂直切断周缘14d的下部为止。
图21表示一个矩形的盖和容器90,其设计可以为前述实施例中的任何一种。
图22表示另一种盖10e的放大剖视图,其结构和功能除另有说明外与前述实施例相似。
具体来说,盖10e与图1至6所示盖10相似,但是盖10e的前壁66e是直的,没有图1至6所示实施例中由向内的环形斜角41所形成的凹槽。
倾斜的板22e的结构和功能可以和倾斜的板22d相似。容器62的唇部,当盖放置于容器上时,可迫使板22e向外,然后如前所述快速弹回而使盖扣紧。为了增加内部环形壁94区域上的刚性可设计多个径向肋片92。
盖10e可以具有前述任何一种辅助密封装置。
本发明的盖可模制而且是挠性的,但是,即使是大型容器,当其掉落时,盖也具有很强的对突然松脱或过早撕裂的抵御能力。另外,本发明的盖有防撬功能,切割可提供容器已被打开的明显证据,而且容器具有对挥发内存物的极好的密封特性。
上面的描述只是用于说明,而并不是对本发明范围的限定。
Claims (32)
1、一种快速扣紧的,挠性的容器盖,具有一平的盖面和从所述盖面垂直延伸的环形周缘以便环绕并扣紧容器的环形唇部,所述周缘具有多个间隔开来的板,相对于所述周缘的其全部方向内倾斜以接合所述容器唇部的下侧,从而有助于将盖保持在容器上,所述周缘基本没有周向的撕开线装置。
2、如权利要求1所述的盖,其特征在于:所述向内倾斜的板只沿一缘连接于所述周缘,并且当将盖装到所述容器上时可向外挠曲,然后快速向内弹回。
3、如权利要求1所述的盖,其特征在于:一环形壁从所述平的盖面垂直延伸,与所述周缘呈向内间隔开来的关系,从而在所述周缘和环形壁之间限定一条用于接纳所述容器唇部的凹槽。
4、如权利要求1所述的盖,其特征在于:每块向内倾斜的板在所述环形周缘的一个分离的部分上形成,所述部分由成对的切口限定,因而所述部分的通过切割的侧向分离,可将盖卸下。
5、如权利要求4所述的盖,其特征在于:所述周缘的部分形成可摆动地连接于所述盖的其余部分的上缘,因而所述部分可向上折起,使倾斜的板移出与容器唇部的接合,以便在切割后使盖可被卸去。
6、如权利要求4所述的盖,其特征在于:所述周缘的部分只在侧向上连接于所述盖的其余部分,从而这些部分可通过所述切割从所述侧向连接中卸下。
7、如权利要求1所述的盖,其特征在于:所述环形周缘形成一个完全环形的,在切割前没有间断的自由的下端部分。
8、如权利要求1所述的盖,其特征在于:所述环形周缘形成一闭合环形密封件,密封地与所述容器唇部上形成的朝外的配合件相接合,所述密封件和配合件中至少一个覆盖有印上的或涂上的弹性的,闭合环形密封层,用作在所述密封件和配合件之间的垫圈。
9、如权利要求8所述的盖和容器,其特征在于:所述闭合环形密封层的厚度大约为0.01英寸。
10、如权利要求1所述的盖,其特征在于:所述盖为矩形以装配在矩形截面的容器上。
11、如权利要求1所述的盖,其特征在于:所述环形周缘通过一环形圈连接于所述盖的其余部分,所述环形圈占据平行于所述平的盖而且与其间隔开来的一个平面,所述环形圈设有与每个所述倾斜的板相邻的开口。
12、如权利要求11所述的盖,其特征在于:所述环形周缘基本是没有开口的。
13、如权利要求1所述的盖,其特征在于:所述向内倾斜的板从在所述环形周缘上限定的相邻开口向内延伸。
14、如权利要求1所述的盖,其特征在于:所述环形周缘形成一条周向槽,用于接纳一条保持带。
15、一种快速扣紧的,挠性的容器盖,具有一平的盖面和一个从所述盖而垂直延伸的环形周缘,以便环绕并扣紧容器的环形唇部,所述周缘具有多个间隔开来的板,从所述周缘的其余部分向内倾斜以接合所述容器唇部的下侧,从而有助于将所述盖保持在容器上,所述向内倾斜的板只沿一缘连接于所述周缘的其余部分,以便当盖安装在所述容器上时向外挠曲,然后快速向内弹回,每块所述向内倾斜的板在所述环形周缘的一分离部分上形成,所述部分在成对的切口之间形成,因而可通过切割,侧向分离所述部分,使盖可卸下。
16、如权利要求15所述的盖,其特征在于:一环形壁从所述平的盖面垂直延伸,与所述环形周缘呈向内间隔开来的关系,从而在所述周缘和环形壁之间形成一个用于容纳所述容器唇部的凹槽,所述环形壁的高度足够小,使得在不受应力的,模制形状时,从所述环形壁至所述向内弯曲的板至少有2mm的间距。
17、如权利要求16所述的盖,其特征在于:所述环形周缘限定一个完全环形的,在所述切割前没有间断的自由下部。
18、如权利要求17所述的盖,其特征在于:所述周缘的所述部分限定可摆动地连接于所述盖的其余部分的上缘,因而所述部分可向上折,使得所述倾斜的板在所述切割后可移出与容器唇部的接合状态,使盖可卸下。
19、如权利要求17所述的盖,其特征在于:所述周缘的所述部分只在侧向连接于所述部分只在侧向连接于所述盖的其余部分,因而所述部分可通过所述切割从所述侧向连接中卸下。
20、如权利要求17所述的安装在容器上的盖,其特征在于:所述环形周缘限定一环形密封件,与所述容器的唇部上形成的朝外的环形配合件密封地接合,所述密封件和配合件中至少一个覆盖着印上的或涂上的弹性的,环形密封层,用作垫圈。
21、如权利要求17所述的盖,其特征在于:所述盖是矩形的以便配合在矩形截面的容器上。
22、一种安装在具有唇部的容器上的盖,所述盖具有一平的盖面和一环形密封件,所述密封件与在所述容器唇部上形成的朝外的配合件密封地接合,所述密封件和配合件中至少一个覆盖着涂上的弹性的,环形密封层,用作所述密封件和配合件之间的垫圈。
23、如权利要求22所述的盖,其特征在于:所述环形密封层的厚度大约为0.002英寸至0.05英寸。
24、如权利要求23所述的盖,其特征在于:所述环形密封层承载在所述朝外的配合件上。
25、如权利要求22所述的盖,其特征在于:所述环形密封层承载在所述朝外的配合件上,所述朝外的配合件具有一环形凹槽,所述环形密封件具有一向外延伸的凸起。
26、一种塑料容器,具有一个用于接纳一个塑料盖的唇部,所述唇部限定一个朝外的环形凹槽,所述环形凹槽覆盖着印上的或涂上的弹性的,环形密封层,用作垫圈。
27、一种塑料容器,具有一个用于接纳一个塑料盖的唇部,所述唇部限定一个朝外的环形凹槽,所述凹槽承载一条弹性密封环,用于与盖的周缘密封接合。
28、如权利要求27所述的塑料容器,其特征在于:所述容器唇部被一塑料盖的环形周缘所环绕,所述塑料盖限定一环形的向内延伸的凸起,所述凸起接合并密封于所述弹性密封环。
29、一种塑料容器,具有用于接纳一塑料盖的唇部,所述盖限定一向外延伸的环形周缘,所述周缘具有一环形外表面,所述周缘在所述环形外表面形成一朝外的环形凹槽,用于接纳由容器盖承载的一环形密封凸起。
30、如权利要求29所述的塑料容器,其特征在于:所述环形凹槽承载着一弹性密封环,用于与所述盖的环形密封凸起接合。
31、如权利要求30所述的塑料容器,其特征在于:所述弹性密封环的横截面直径小于所述环形凹槽的径向深度,因而所述密封环与所述环形外表面向内间隔开来。
32、如权利要求29所述的塑料容器,其特征在于:所述凹槽没有弹性密封环。
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US076443 | 1998-05-12 |
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Publication Number | Publication Date |
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CN1101618A true CN1101618A (zh) | 1995-04-19 |
CN1042119C CN1042119C (zh) | 1999-02-17 |
Family
ID=22132049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN94106652A Expired - Fee Related CN1042119C (zh) | 1993-06-14 | 1994-06-14 | 快速扣紧挠性盖 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5538154A (zh) |
JP (1) | JP2745041B2 (zh) |
CN (1) | CN1042119C (zh) |
AU (1) | AU669801B2 (zh) |
CA (1) | CA2125352C (zh) |
NZ (1) | NZ260699A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101454218B (zh) * | 2006-05-26 | 2010-09-15 | 卡钵耐特公司 | 容器盖 |
CN108463412A (zh) * | 2015-12-17 | 2018-08-28 | 温纳塑料荷兰有限公司 | 包装盖 |
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PL2523866T3 (pl) * | 2010-01-11 | 2014-09-30 | Superfos As | Pojemnik |
TWI392625B (zh) * | 2010-10-22 | 2013-04-11 | Rich Cup Bio Chem Tech Co Ltd | 杯蓋 |
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US10167117B2 (en) | 2011-05-05 | 2019-01-01 | Rich Cup Bio-Chemical Technology Co., Ltd. | Lid |
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US10899503B2 (en) * | 2016-04-20 | 2021-01-26 | Yeti Coolers, Llc | Spigot and spigot guard for an insulating container |
CN107792522A (zh) * | 2017-11-09 | 2018-03-13 | 江门市辉捷塑胶五金制造有限公司 | 一种新型一按式保鮮盒 |
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-
1993
- 1993-06-14 US US08/076,443 patent/US5538154A/en not_active Expired - Fee Related
-
1994
- 1994-06-07 CA CA002125352A patent/CA2125352C/en not_active Expired - Fee Related
- 1994-06-07 NZ NZ260699A patent/NZ260699A/en unknown
- 1994-06-08 AU AU64605/94A patent/AU669801B2/en not_active Ceased
- 1994-06-14 CN CN94106652A patent/CN1042119C/zh not_active Expired - Fee Related
- 1994-06-14 JP JP6155315A patent/JP2745041B2/ja not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101454218B (zh) * | 2006-05-26 | 2010-09-15 | 卡钵耐特公司 | 容器盖 |
CN108463412A (zh) * | 2015-12-17 | 2018-08-28 | 温纳塑料荷兰有限公司 | 包装盖 |
Also Published As
Publication number | Publication date |
---|---|
CN1042119C (zh) | 1999-02-17 |
AU669801B2 (en) | 1996-06-20 |
CA2125352C (en) | 1999-08-03 |
AU6460594A (en) | 1994-12-15 |
JPH07206022A (ja) | 1995-08-08 |
JP2745041B2 (ja) | 1998-04-28 |
CA2125352A1 (en) | 1994-12-15 |
US5538154A (en) | 1996-07-23 |
NZ260699A (en) | 1997-02-24 |
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