CN1101322A - 容器和压力密封封闭件结合系统 - Google Patents
容器和压力密封封闭件结合系统 Download PDFInfo
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Abstract
一种容器和压力密封封闭件结合系统,封闭件
(24)包括啮合容器(20)的口(22)的凸缘部分(26)、大
体为刚性的中央部分(28)和连接凸缘部分和中央部
分的肘环形部分(30)。中央部分响应容器内压力产
生的向上运动使肘环转动,并推动凸缘部分大体径向
向外压在容器口上形成密封。容器口内表面包括许
多将容器中压力气体引到外界的槽(62),容器口外表
面(68)上包括在凸缘部分上径向向内凸的凸棱(70),
从而实现密封件和容器的啮合。
Description
本发明涉及一种密封件和容器结合系统,具体涉及利用容器内装物的内部压力来实现密封的密封件。
出于成本和安全因素,人们很希望用聚对苯二甲酸乙酯(PET)来制造装含碳酸气饮料的容器。用PET的好处是它可以方便地重复使用。但是根据现在的设计,碳酸气饮料容器本身是用PET作的并具有一个装铝盖的螺纹口。铝盖或封闭件具有形成一条分离线的环形穿孔,所以当盖从容器上取下后,盖便留下一圈薄的铝环。
因此在重新利用过程中的某个时候,便需要将铝环与PET料分离。如果整个容器封闭件结合系统可以用PET制造,则不会有这种分离步骤。因为PET和铝具有不同的强度,所以需要设计不同的封闭件形状。在Wiedmer的US-A3825114中公开了这种封闭件和容器的一个例子。该专利公开了一种用于密封装有压力内装物的瓶子的容器封闭件,并包括一个密封件,该密封件具有可形变的圆盘部分,形状向外凹。该圆盘部分响应容器内装物的内压力而产生形变。然而这种柔形的封闭件不适合于PET的装配,因为典型的碳酸气饮料容器的内压力不会大到使这种封闭件的整个表面形变。
因此,需要一种适合于碳酸气饮料的容器和封闭件的设计,在这种设计中,封闭件可以用诸如PET的柔性塑料制作。另外,这种封闭件的缺点是它们缺少逐渐释放容器内压力的装置。因此,当打开这种先有技术封闭件时会有危险,由于容器内内装物的压力封闭件将喷离容器。因此需要一种容器和封闭件机构,在这种机构中,利用容器内装物产生的内压力来实现密封,并在打开密封件期间提供一种装置来逐渐平衡压力。
本发明是一种容器和压力密封封闭件结合系统,该系统完全用PET制作,并且封闭件利用容器内内装物所产生的压力实现密封。封闭件的构形为盖住容器的环形口并包括啮合容器口的凸缘部分、基本为刚形的中央部分和使凸缘和中央部分相互连接的环形肘环部分。中央部分响应容器内内装物内压力而产生的向上运动使肘环部分转动,由此推动凸缘部分大体径向向外地压靠在容器口上,从而实现封闭。另外,容器口包括一个外面的环形凹槽,而封闭件的凸缘部分包括一个啮合该凹槽的凸棱,因而提供了另外一种将封闭件固定到容器上的机构。
容器口包括一个轴向延伸沟槽的内圆周,该槽位于凸缘部分和容器口之间的界面上。当封闭件在从容器上取下期间发生形变时,容器中的压力气体便可以通过这些沟槽流到外界,该沟槽调节了容器中气体的外流,防止了在打开时气体的爆炸性喷出。
为便于从容器上取下封闭件,封闭件具有一个径向凸出于封闭件边缘的手拉片。因此,相对于封闭件转动手拉片便可除去封闭件,该手拉片使封闭件变形并使容器中的压力气体逸出,由此消除了由肘环部分压靠在凸缘部分产生的密封机构。在优先实施例中,封闭件包括几组径向延伸的槽口,当打开封闭件而封闭件变形时,该槽口断裂。这种断裂有助于封闭件进一步形变并从容器上除去。另外,由断裂槽口引起的断裂线提供了一种容易看见的容器已经被打开的证据,可以防止再用那个特定的封闭件密封该容器。
另外,在优先实施例中,容器还包括一个底座或底部,该底部包括一个圆环。该环的尺寸被规定得可以在其内圆周内以轻微压配合的方式安放封闭件。因而当从容器上取下后封闭件便可以贮存在底部上,容器和封闭件可以作为一个单元处理。
在一个可取代的实施例中,肘环部分被改变而包括一个径向向外和向上延伸的楔形件。当中央部分受到容器内压力内装物的作用而偏移时,楔形部分便转动而与凸缘部分接触,从而实现密封。
本发明的目的是提供一种容器和封闭件结合系统,该系统可以适应容器内装物例如碳酸气饮料的需要;该系统可以安全地保存有压力的内装物并完全用PET制造;该系统利用容器内装物产生的内压力来实现在容器和封闭件之间的封闭;该系统中封闭件啮合容器,使得在打开封闭件期间可以安全地调节容器中压力气体的释放;该系统中封闭件包括在打开期间形成断裂线的槽口,以便于打开和证明封闭件已经从容器上取下;该系统中的容器包括一个适合于安放封闭件的底部,使得封闭件从容器上取下来之后可以稳妥地贮存在底部中;该系统中的容器和封闭件相当容易制造和安装。
为了更容易理解本发明,现在参考附图,这些附图是:
图1是本发明的容器和压力密封封闭系统的最佳实施例的透视图;
图2是图1所示封闭系统的透视图,图中一部分被切去,以示出容器口的形状;
图3是细部图,示出封闭件固定在图1的容器上;
图4是沿图1的4-4线截取的细部侧视图;
图5是图1封闭件的底部平面图;
图6是沿图5的6-6线截取的细部侧示截面图;
图7是图1封闭件的细部侧视截面图,示出固定在容器口上的封闭件;
图8是图7的侧视图,示出其中手拉片被转动,从容器内部放出气体;
图9是图7的截面图,示出其中手拉片已被转动,使得封闭件凸缘与容器口分开;
图10是本发明另一个实施例的细部侧视图;
图11是图10实施例的侧视截面图;
图12是本发明再一实施例的侧视截面图;
图13是本发明容器的底部透视图,图中,封闭件与底部分离;
图14是透视图,其中,封闭件已装在图13的容器的底部中。
如图1,2和3所示,本发明的容器和压力密封封闭系统包括大体为圆筒形的容器20,该容器具有由封闭件24密封的容器口22。容器20和封闭件24都采用可重复使用的材料制作,最好用聚对苯二甲酸乙酯(PET)制作。
封闭件24包括升高的凸缘部分26、圆形中央部分28和使凸缘部分和中央部分相互连接的肘环部分30。凸缘部分26包括垂直延伸的径向外壁32、垂直延伸的径向内壁34和大体水平延伸的使该内壁和外壁相互连接的顶壁36。手拉片38与外壁32整体成形,并从外壁32径向向外延伸。
容器20包括上截头圆锥部分40、中央圆筒部分42和结束于环形底部46的下截头圆锥部分46。上截头圆锥部分40向上结束于容器口22中(见图4)。
如图4和5所示,中央部分28包括一个加厚的圆周凸缘48,该凸缘通过相当薄的铰链50连接到肘环部分30上。同样,肘环部分30通过相当薄的第二铰链部分52连接到内壁34上。因而肘环部分可以相对于中央部分28和内壁34转动。另外,肘环部分30相对于中央部分28向上形成一个角度,使得中央部分和肘环部分构成大体为盘子的形状。
凸缘部分26的内壁34在其下缘54(也见图6)被加厚,并且内壁34的外表面56向内在离开容器口22的方向逐渐径向形成圆锥形。内壁34和端壁36的结合部58是相当薄的,以便从容器口22上除去封闭件24时容易弯曲。相反,容器口22的径向内表面60则向内逐渐缩成圆锥,其锥角大体与内壁34的外表面的锥度相等。另外,内表面60包括许多轴向延伸的槽口62,该槽口沿容器口22的圆周配置,间距大体相等(也见图2)。槽口62的存在提供了容器20中压力气体外流的通道。槽口62成形于一系列分开的凸缘64之间,该凸缘成形于容器口22的内表面60上。
如图4所示,容器口22包括一个形成环形凹槽66的下切部,该凹槽沿着容器口22的外表面68的圆周延伸。凸缘部分26的外壁32包括一个成形为可与凹槽66啮合的径向向内的凸棱70。如图5所示,凸棱70基本上连续地沿外壁32的圆周延伸,仅被四个总的由72表示的断裂部分断开。断裂部分72与手拉片38、在与手拉片正好相对的凸缘部分26上的一个位置和二个中间位置重合,该两个中间位置位于凸缘部分26上,与相对于手拉片38的断裂部分成大约77°的角度。每个断裂部分72包括一对分开的成形于外壁32和顶壁36下侧的槽口74、76。在槽口74、76之间延伸的这部分除开与手拉片38结合的断裂部分外没有凸棱70。
如图4所示,封闭件24部分地通过由容器20的有压力的内装物(未示出)施加在封闭件24的压力使其靠在容器20的容器口22上而被密封。高于大气压的容器20的内部压力沿箭头A的方向作用一个向外的力在封闭件24的中央部分28上。中央部分28响应这个力而稍为向上的运动使中央部分对着凸缘部分26的内壁34向外转动肘环部分30。这种转动然后推动内壁34的外表面56压在容器口22的内表面60上。容器口呀2的固有的圆周强度将阻止形变,足以使容器内装物或力可以将封闭件24封闭在容器口22上。
这种运动还受到在内壁34的外表面56和容器口22的内表面60之间的相反的圆锥形啮合的限制。内壁34的加厚的部分54在密封区域78与容器口22的内表面60接触(也见图7)。密封区域78阻止容器20内有压力的内装物从出口逸出(见图1)。
从容器口22上除去封闭件24的操作,按顺序地示于图7-9。如图7所示,封闭件24被牢固地安装在容器20(见图1)的容器口22上,其中,凸缘部分26的内壁34被压靠在容器口22的内表面60上。另外,外壁32的凸棱70锁定啮合在容器口22上的凹槽66上。
如图8所示,当使手拉片38在箭头B的方向转动时,外壁32和顶壁36便绕结合部58转动,因而紧靠手拉片38的凸棱便从凹槽66中脱开。同时,由于这种转动,顶壁36和内壁34便偏离容器口22。这也使加厚的部分54从密封区域78上移到在容器口22的内表面60上的凸缘64上。在此位置时,容器20的内装物便可以通过槽口62(见图2)流出。
如图9所示,手拉片38的进一步偏移导致外壁32的区域沿在手拉片(也见图5)两侧的槽口74、76断裂。当从容器20上除去封闭件24时,其它的断裂部分72也将沿其相应的口74、76裂开。这种封闭件24的部分破坏可防止将封闭件重新装在容器20上和重新将封闭件再密封在容器20上。
容器的可替代的实施例示于图10和11。封闭件24′的结构类似于图1-9所示的封闭件24的结构。然而外壁32′比内壁34稍薄一些,并由大体上沿封闭件24′的外圆周延伸的凸缘80增强。封闭件24′还包括中央部分28′、肘环部分30′和手拉片38′。
本发明的另一个实施例示于图12。在该实施例中,封闭件24”包括盘形的中央部分28”和具有凸起的环形凸缘82的肘环部分30”,该凸缘的横截面为楔形。当中央部分由于容器20”中的内压力而向上偏移时,该楔形部分82径向向上转动,从而与凸缘部分26”的内壁34”接触,从而实现密封。
如图13和14所示,底部46是环形的,其尺寸被定得可以在其中放置封闭件24'''。示于图13和14的封闭件24'''缺少手拉片。然而可以带有手拉片,底部46可以开槽口而放置它。因而封闭件24'''当从容器20的容器口上取下时可以插入到底部36中并被固定,从而可适当处置该系统。底部46包括许多稍为径向向内延伸的凸缘84,与封闭件24'''形成轻度的压配合。
尽管本文所述装置的构造构成本发明的优先实施例,但是应当清楚,本发明不限于装置的这些构造,并且可以在其中进行改变而不违背如所附权利要求书所述的本发明的范围。
Claims (10)
1、一种容器和压力密封封闭件结合系统,该系统由具有弹性的塑料制作,该系统具有大体为圆筒形的容器(20)、环形的容器口(22)和响应容器内装物的内部压力而可形变的盘形部分,上述密封件(24)的特征在于啮合上述容器口的凸缘部分(26)、基本上为刚性的中央部分(28)和环形的肘环部分(30),该肘环部分可绕枢轴转动地连接到上述凸缘部分和上述中央部分上,因此,上述中央部分响应上述容器内装物的内部压力而产生的向上运动使上述肘环部分转动,从而推动上述凸缘部分基本上径向向外地压在上述容器口上,实现密封。
2、如权利要求1所述的容器和封闭件结合系统,其特征在于,上述凸缘部分(26)包括与上述容器口内表面(60)相接的内壁(34)、与上述容器口的外表面(68)相接的外壁(32)和在上述内、外壁之间延伸的邻接上述容器口(22)端部的顶壁(36)。
3、如权利要求2所述的容器和封闭件结合系统,其特征在于,上述肘环部分(30)被连接在上述凸缘部分(26)的上述内壁(34)上并压靠在其上面。
4、如权利要求3所述的容器和封闭件结合系统,其特征在于,上述内表面(60)对着上述端部逐渐径向向内缩成锥形,因而当上述封闭件(24)实现密封时,可以防止上述内壁(34)滑向上述端部。
5、如权利要求4所述的容器和封闭件结合系统,其特征在于,上述内表面(60)包括将上述容器(20)的有压力的气体内装物引入到在上述封闭件(24)和上述容器之间空间的槽口装置。
6、如权利要求1-5所述的容器和封闭件结合系统,该系统包括手拉片装置(38),该装置向外凸出于上述封闭件(24)并这样定位,使得上述手拉片装置相对于上述容器口(22)的位移可以使上述封闭件产生足以破坏上述密封的形变。
7、如权利要求6所述的容器和封闭件结合系统,该系统包括易断裂件(72),该断裂件由于上述手拉片装置(38)相对于上述封闭件(24)的转动而断裂,使得当上述易断裂件断裂时,不能将上述封闭件再装到上述容器口(22)上。
8、如权利要求7所述的容器和封闭件结合系统,其特征在于,上述易断裂件72包括许多在上述凸缘部分26中成形的大体径向延伸的槽口(74、76)。
9、如权利要求1所述的容器和封闭件结合系统,其特征在于,上述肘环部分(30”)包括楔形装置(82),因而上述中央部分(28”)的向上运动可使上述楔形装置(82)靠着上述凸缘部分(26”)径向向外转动。
10、如权利要求1所述的容器和封闭件结合系统,其特征在于,上述容器包括上述底部装置(46),上述封闭件(24)的尺寸被定得当其从上述容器口(22)上除去之后可以固定在上述底部装置中。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN93118648A CN1101322A (zh) | 1992-05-06 | 1993-10-05 | 容器和压力密封封闭件结合系统 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US07/879,768 US5251770A (en) | 1992-05-06 | 1992-05-06 | Container and pressure sealing closure combination |
CN93118648A CN1101322A (zh) | 1992-05-06 | 1993-10-05 | 容器和压力密封封闭件结合系统 |
Publications (1)
Publication Number | Publication Date |
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CN1101322A true CN1101322A (zh) | 1995-04-12 |
Family
ID=41727832
Family Applications (1)
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CN93118648A Pending CN1101322A (zh) | 1992-05-06 | 1993-10-05 | 容器和压力密封封闭件结合系统 |
Country Status (7)
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US (1) | US5251770A (zh) |
EP (1) | EP0642983A1 (zh) |
CN (1) | CN1101322A (zh) |
BR (1) | BR9303872A (zh) |
CA (1) | CA2106123A1 (zh) |
EC (1) | ECSP931010A (zh) |
NZ (1) | NZ248668A (zh) |
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- 1993-09-14 CA CA002106123A patent/CA2106123A1/en not_active Abandoned
- 1993-09-15 NZ NZ248668A patent/NZ248668A/en unknown
- 1993-09-23 BR BR9303872A patent/BR9303872A/pt not_active Application Discontinuation
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- 1993-12-15 EC EC1993001010A patent/ECSP931010A/es unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105517915A (zh) * | 2013-07-09 | 2016-04-20 | 欧文斯-布洛克威玻璃容器有限公司 | 通风的顶盖及盖 |
CN107000903A (zh) * | 2014-12-15 | 2017-08-01 | 雀巢产品技术援助有限公司 | 用于容器的盖子和包括此类盖子的包装 |
US10150597B2 (en) | 2014-12-15 | 2018-12-11 | Nestec S.A. | Cap for a container and a package comprising such a cap |
CN107000903B (zh) * | 2014-12-15 | 2019-10-29 | 雀巢产品有限公司 | 用于容器的盖子和包括此类盖子的包装 |
Also Published As
Publication number | Publication date |
---|---|
US5251770A (en) | 1993-10-12 |
ECSP931010A (es) | 1995-01-16 |
CA2106123A1 (en) | 1995-03-15 |
EP0642983A1 (en) | 1995-03-15 |
NZ248668A (en) | 1995-05-26 |
BR9303872A (pt) | 1995-05-23 |
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