CN1639020A - 罐的塑料盖 - Google Patents

罐的塑料盖 Download PDF

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CN1639020A
CN1639020A CNA03805485XA CN03805485A CN1639020A CN 1639020 A CN1639020 A CN 1639020A CN A03805485X A CNA03805485X A CN A03805485XA CN 03805485 A CN03805485 A CN 03805485A CN 1639020 A CN1639020 A CN 1639020A
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jar
skirt
vinyl cover
buckling piece
tubular bodies
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CN1639020B (zh
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安东尼奥·C·T·阿尔瓦雷斯
安东尼奥·R·塞内
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Brasilata SA Embalagens Metalicas
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Abstract

用于一种罐的塑料盖，该类罐包括一个管形体(10)，所述管形体有一个用于支承盖(20)的上端(13)，所述塑料盖包括：一个密封部分(21)，所述密封部分被可拆开地支承并保持在管形体(10)上，并设置有一个上缘(21b)；一个封口部分(25)，在第一次打开盖(20)时所述封口部分将断开，所述封口部分有一个上环(25b)被连接到下护裙(25a)，所述上环(25b)和所述下护裙(25a)分别被设置在部分上端(13)上和部分上端(13)的周围，所述上环(25b)通过径向桥(26)连接到所述上缘(21b)，封口部分(25)有一个断口(25c)，所述断口延伸达到上环(25b)的宽度并至少达到下护裙(25a)的部分高度。密封部分(21)包括一个卡扣片(27)，只有在部分封口部分(25)断开之后才可以用手操作卡扣片。

Description

罐的塑料盖
技术领域
本发明涉及一种用于密封罐的塑料盖，所述罐由金属片构成并且这类罐包括一个管状体，该管状体的下护裙(lower skirt)附接或连接一个底壁，其上边缘直接通过管形体的变形部分或通过结构环形式的环形上壁部分支承一个座，该座用于支承并保持可压入配合的盖子。具体地说，本发明涉及提供一种用于上面所考虑类型罐的塑料盖，所述罐被用于容纳逐步消费的产品，例如某些食品。
技术背景
有限期的产品，如某些食品，必须受到密封保存，并给消费者提供清晰可见的标识，说明在市场上盛装这些产品的容器还没有遭到破坏。因为这些产品中很多是渐次消费的，在所存装的产品被渐次消费的过程中，为了保证重新封闭的罐的密封性并保护其内容纳的剩余部分，在第一次打开容器之后，这个作为通往罐内部的开口的盖子必须要能重新封闭所需的次数。
在现有技术中有很多熟知的具有压入配合盖子的罐，其中盖子被压入配合在一个圆周结构环内，该环位于罐体的上边缘内部，并被双重卷边密封接合到所述上边缘。通过将盖子配合到用于支承和固定盖的座内，这种结构形式使容纳物的密封性得到保证，该座可以设置在限定罐的环形上壁的结构环内，或者设置在罐的管状体内。
在这类密封中，显示是否受击打的密封件通常由一个金属铝片形成，它也保证密封性，该铝片与结构环一起被双重卷边接合到罐体的上边缘。该内部密封件也仅仅在盖子被拆开之后才能看到，并且它也需要用一种装置来沿其周边将它切开，这总会在靠近罐的上部开口处留下切边，导致频繁发生在用户手指上留下伤口的事故。除了上述不便之外，这些已知的压入配合盖子需要用户使用一种杠杆形式的装置，才可以将盖子从限定在结构环内的座上移走。用户只用手不可能拆开这种盖子。
从巴西专利申请PI 0003727-3中也可以获知一种解决方法，其中塑料盖包括一个密封部分和一对通常为半圆形的把手，所述密封部分被可拆除地支承并保持在座内，而所述把手沿该密封部分的上边缘设置，其端部连接到该上边缘。在断开连接把手中间区域和塑料盖密封部分的可断开装置之后，可以将把手沿其中线从一个与所述上边缘共面的非操作位置移动到一个抬高的操作位置。在该现有构造技术中，塑料盖还包括一个用手可断开的密封带，它沿管形体的上端设置并有一个下部分和一个上部分，所述下部分被支承并锁定在环形上壁的双重卷边下面，而所述上部分通过可断开的连接装置与把手和密封部分相连接。
尽管它消除了用于容纳渐次消费产品的罐的现有盖子的缺陷，但该申请的这一现有解决方法仍然有一些不便之处。所述不便之处中其一涉及到令人生疑的密封带固定的可靠性，因为如果轻轻向上加力，它会被移动，从罐的上部双重卷边滑出。
所述现有技术盖子的另一个不便之处来自于下面事实，即借助相应的把手轴向拉动盖时，盖会突然打开，这样在打开盖时会使存装的产品不恰当地冒出。
可以被改善的另两个方面涉及一种装置，使用它把手可以拔出盖子，并且涉及罐的管形体上边缘周围密封带的持久性，通常需要使用一个切除装置来移走它。
发明内容
本发明的一个总的目标是提供一种可重新封闭的塑料盖，所述塑料盖用于这里所考虑的一种罐，该盖具有简单的结构和低成本，有方便开盖的装置以及一种能一目了然地提示破损情况的可靠密封件。
本发明的另一个目标使提供一种如上面所定义的塑料盖，它可以由消费者安全而便捷地操作。
本发明的这些以及其它目标和优点可以通过提供一种用于某类罐的塑料盖而获得，这类罐包括一个管形体，该管形体具有一个下端和一个上端，该上端支承一个用于密封支承盖子的座。
按照本发明，单件盖子包括：一个密封部分，它被可拆开地支承并保持在座内，并具有一个从该座径向向外伸出的上边缘；一个封口部分(seal portion)，它有一个下护裙，该下护裙沿管形体部分上端一设置，还有一个上环，它被支承在管形体部分上端上面，该上环在外部被连接到下护裙，而在内部通过径向桥被连接到密封部分的上边缘，在其圆周延伸部分，该封口部分有一个断开部分，所述断开部分延伸达到上环的宽度并至少达到下护裙的一部分高度，所述密封部分包括一个卡扣片(gripping tab)，该卡扣片径向向外并轴向向下伸出，越过封口部分的所述断开部分，所述卡扣片只有在封口部分的一部分断开之后才可以用手操作，在第一次打开盖子时，当受到一定的拉力作用使封口部分和密封部分分开，这时，所述径向桥断开。
附图说明
下面将结合附图对本发明进行说明，其中：
图1是根据本发明第一个实施例构成的塑料盖的透视图，包括一个封口部分；
图2是图1中的盖子在封口部分被分开之后的分解透视图；
图3是图1所示塑料盖的顶视平面图；
图4是图1至3所示盖子安装到一个罐上端时的局部径向横断面图，所述图沿图3的IV-IV线剖切得到；
图5是与图4相似的图，但沿图3的V-V线剖切得到；
图6是本发明塑料盖的另一种结构的透视图，包括一个封口部分；
图7是图6中的盖子在封口部分被分开后的分解透视图；
图8是图6所示塑料盖的顶视平面图；
图9是图6至8所示盖子安装到一个罐上端时的局部径向横断面图，所述图沿图8的IX-IX线剖切得到；和
图10是与图8相似的视图，但沿图8的X-X线剖切得到。
具体实施方式
根据图1至10所示的实施例，该盖子适用于一种由金属片构成的罐，该罐包括管形体10，该管形体具有一个附接底壁12的下端11，并具有一个上端13，该上端借助双重卷边附接环形上壁14，该上壁14在内部形成一个座15，用于密封并支承盖20。
环形上壁14能采取结构环形式，如图4、图5、图9和图10所示，或者在大尺寸的罐，如18升罐中甚至可采取环形板形式。环形上壁14和座15的结构可以通过不同的方式获得，只要该结构能使盖20密封和可靠地配合到罐的上部。在图4、图5、图9和图10中，环形上壁14和座15是按照在巴西和其它国家(例如，在美国，US5899352和在欧洲，EP0706486)发布的同一申请者的巴西专利PI9408643-5中所描述和声明的那样制做的。因此，没有必要在本说明中详细描述所述现有结构。
根据本发明和附图所示，盖20最好由透明或不透明的塑料制成，该盖子包括一个适当结构的密封部分21，以使该密封部分能可拆开地支承并保持在座15中，所述密封部分21包括一个上缘21b，在所示实施例中该上缘由一个外周凸缘21a形成，且该凸缘很好地连接到密封部分21。在具有密封部分21的单件中，盖20还包括一个封口部分25，该封口部分25有一个下护裙25a和一个上环25b，该下护裙通常沿管形体10的上端13的外周延伸部分紧密设置，而该上环25b被支承在管形体10上端的外周延伸部分上。上环25b在外部被连接到下护裙25a，而在内部通过可手动断开的径向桥26被连接到密封部分21的上缘21b。
按照本发明，在第一次打开盖20时，当受到一定的拉力作用使封口部分25与密封部分21分开时，径向桥26会断开。
封口部分25在其外周延伸部分中，具有一个断口25c，它延伸达到上环25b的宽度，并延伸至少达到下护裙25a的一部分高度，所述断口25c在其两侧的上环25b和下护裙25a的各所述部分中相互对峙的边缘之间形成一定的外周空间。
按照本发明，密封部分21包括一个卡扣片27，该卡扣片沿着封口部分25的所述断口25c径向向外并轴向向下延伸出，例如，与所述封口部分25的相应部分大致保持齐平。
在图1至5所示的实施例中，卡扣片27延伸通过上环25b的整个相应的径向延伸部分，并延伸通过下护裙25a的一部分轴向延伸部分，在图6至10所示的结构中，卡扣片27占据上环25b的整个相应的径向延伸部分，并轴向向下延伸超出下护裙25a的轴向延伸部分。
按照本发明，封口部分25包括至少一个可断开的锁28，该锁使卡扣片27至少与由封口部分25的上环25b和下护裙25a所限定的部分的一部分相连接。只有当封口部分25的一部分断开之后，例如，当各可断开的锁28断开之后，卡扣片27才可以用手操作。
在图1至5所示的结构中，卡扣片27通过两个或更多环形桥形式的可断开的锁28被侧向连接到上环25b，锁28在第一次打开盖20时可以用手断开。
由本发明提出并且在图1至5所示的结构中，径向桥26和可断开的锁28是断开的，这样在用手抬起卡扣片27第一次打开盖时就可使密封部分21和封口部分25分离。
在图6至10所示的结构中，下护裙25a连接封口桥25d的端部，该封口桥沿周向延伸越过封口部分25的断口25c，并越过卡扣片27。封口桥25d有一个第一端25e，该端通过连接装置25f被连接到下护裙25a，当所述第一端25e受力远离下护裙25a，例如被径向向外拉时连接装置25f将断开，从而形成人手通向卡扣片27的入口。在所示实施例中，封口桥25d的第一端25e被设置成覆盖在下护裙25a上面，并通过两个彼此沿周向保持一定间隔的连接装置25f与下护裙25a相连。
在图6至10所示的结构中，卡扣片27通过可断开的锁28连接到封口桥25d的下面，可断开的锁28的形式是一个或更多个轴向桥，它在第一次打开盖子时用手断开。
卡扣片27的设置使得密封部分21可以被轻易地从座15内的支承位置移开，并且可控制地、逐步地打开罐，即首先在邻近卡扣片27的区域内打开，随后在座的其余部分内打开，这样会防止存装的产品由于不小心而从罐中流出。
按照本发明，卡扣片27可以很大，并且至少部分中空，形成一个把手，如图6至10所示。
在图1至3和图5所示的结构中，卡扣片27很大，由上环25b和下护裙25a的相应部分构成，保持大致与密封部分21的所述部分齐平，并沿该所述部分的整个延伸部分与所述部分保持一个间隙29。
如图1至3和图5所示，卡扣片27最好被限定在下护裙25a的断口部分24内，该部分与下护裙25a的其余部分保持分离，仅仅在上面与上环25b相连。采用这种结构，下护裙25a的断口部分24可以为一个“U”形片，该“U”形片与卡扣片27的相关延伸部分的周边之间保持所述间隙29，并借助一对轴向切口23与下护裙25a的其它部分保持分离，在所示实例中该轴向切口径向向内延伸，达到上环25b的一定宽度，使得在第一次打开盖子之后，封口部分25可以在断口部分24的区域内断开，从而完全而容易地与管形体10分离。
为了与堆叠在第一个管形体上面的另一个管形体10的下端11实现可松可紧、可伸可缩、可内可外地配装，在一种结构形式中，上环25b可以连接一个上圆周肋25g，该肋为连续式的或者分段式的，并伸出到管形体10的上端13的外面。
如果上圆周肋25g的直径小于管形体10的下端11的直径，它被配装在底壁12上的圆周凹槽12a内，位于堆叠在第一个管形体上的另一个管形体的下端11内。
在盖20的结构中，如图1至5所示，密封部分21的上缘21b被设置在一个与包含上环25b的平面基本重合的平面内，该结构中的径向桥26被设置为大致水平并与所述部分齐平。在图6至10所示的结构中，密封部分21的上缘21b被设置在一个相对于包含上环25b的平面更低的平面内，并且径向桥26被大致垂直设置在所述部分之间。尽管围绕一种结构形式的罐的两种可能的实施例对本发明进行了说明，但应该理解为在不脱离本专利申请的权利要求所限定的保护范围内仍然可以变更。

Claims (16)

1.一种用于罐类的塑料盖，该类罐包括一个管形体(10)，所述管形体有一个下端(11)和一个承载座(15)的上端(13)，座(15)用于密封支承盖(20)，其特征在于，单件的塑料盖包括：一个密封部分(21)，所述密封部分被可拆卸地支承并保持在座(15)内，并设置有一个从座(15)径向向外伸出的上缘(21b)；一个封口部分(25)，所述封口部分有一个下护裙(25a)，所述下护裙环绕管形体(10)的部分上端(13)设置，还有一个上环(25b)，其被设置在管形体(10)的部分上端(13)上，所述上环在外部被结合到下护裙(25a)，在内部通过径向桥(26)与密封部分(21)的上缘(21b)结合，封口部分(25)在其圆周延伸部分有一个断口(25c)，所述断口延伸达到上环(25b)的宽度并延伸至少达到下护裙(25a)的一部分高度，所述密封部分(21)包括一个卡扣片(27)，该卡扣片径向向外并轴向向下延伸通过封口部分(25)的所述断口(25c)，所述卡扣片(27)只有当封口部分(25)的一部分断开之后才可以用手操作，在第一次打开盖子时，当施加一定拉力使封口部分(25)与密封部分(21)分离时，所述径向桥(26)被断开。
2.根据权利要求1所述用于罐的塑料盖，其特征在于：下护裙(25a)围绕管形体(10)的上端(13)的圆周延伸部分紧密设置。
3.根据权利要求2所述用于罐的塑料盖，其特征在于：封口部分(25)包括至少一个可断开的锁(28)，该锁使卡扣片(27)连接到由封口部分(25)的上环(25b)和下护裙(25a)所限定的各个部分中的至少一个部分。
4.根据权利要求2所述用于罐的塑料盖，其特征在于：下护裙(25a)与封口桥(25d)的端部相结合，该封口桥沿周向延伸越过封口部分(25)的断口(25c)，并越过卡扣片(27)，封口桥(25d)的所述各端的第一端(25e)通过连接装置(25f)被连接到下护裙(25a)，当所述第一端(25e)受力远离下护裙(25a)时，连接装置(25f)将断开，从而开放了人手通向卡扣片(27)的入口。
5.根据权利要求4所述用于罐的塑料盖，其特征在于：封口桥(25d)的第一端(25e)被设置在下护裙(25a)的上面，并通过两个彼此沿周向间隔开的连接装置(25f)与下护裙(25a)相连。
6.根据权利要求1所述用于罐的塑料盖，其特征在于：卡扣片(27)保持大致与上环(25b)和下护裙(25a)齐平，从而沿其整个延伸部分与所述部分保持一个间隙(29)。
7.根据权利要求1所述用于罐的塑料盖，其特征在于：卡扣片(27)至少部分中空以形成一个把手。
8.根据权利要求7所述用于罐的塑料盖，其特征在于：卡扣片(27)轴向延伸并向下延伸超过下护裙(25a)。
9.根据权利要求1所述用于罐的塑料盖，其特征在于：卡扣片(27)很大。
10.根据权利要求9所述用于罐的塑料盖，其特征在于：卡扣片(27)被限定在下护裙(25a)的断口部分(24)内，该断口部分与下护裙(25a)的其余部分保持分离，并且只在上面与上环(25b)相连。
11.根据权利要求10所述用于罐的塑料盖，其特征在于：下护裙(25a)的断口部分(24)被一个“U”形片所限定，该U形片沿着卡扣片(27)的各延伸部分的周围保持一个间隙(29)，该间隙(29)使卡扣片与断口部分(24)分开，断口部分(24)借助一对轴向切口(23)与下护裙(25a)的其余部分保持分离。
12.根据权利要求11所述用于罐的塑料盖，其特征在于：轴向切口(23)径向向内延伸，其延伸度达到上环(25b)的一定宽度。
13.根据上述权利要求任一所述用于罐的塑料盖，其特征在于：为了与堆叠在第一个管形体上的另一个管形体(10)的下端(11)实现可松散地、可伸缩地配装，上环(25b)连接一个上圆周肋(25g)，所述上圆周肋伸出到管形体(10)的上端(13)的外面。
14.根据权利要求13所述用于罐的塑料盖，其特征在于：上圆周肋(25g)为连续的。
15.根据权利要求13所述用于罐的塑料盖，其特征在于：上圆周肋(25g)被配装在堆叠于第一个管形体上的所述其它管形体(10)的下端(11)的周围。
16.根据权利要求13所述用于罐的塑料盖，其特征在于：上圆周肋(25g)被配装在圆周凹槽(12a)内，所述圆周凹槽设置于堆叠在第一个管形体上的其它管形体(10)的下端(11)的内部。
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KR20040093727A (ko) 2004-11-08
AR038867A1 (es) 2005-02-02
MXPA04008629A (es) 2004-12-06
WO2003074381A1 (en) 2003-09-12
RU2317237C2 (ru) 2008-02-20
EP1480890A1 (en) 2004-12-01
AU2003209871A1 (en) 2003-09-16
US7731048B2 (en) 2010-06-08
RU2004129740A (ru) 2005-04-10
ES2316783T3 (es) 2009-04-16
DE60324256D1 (de) 2008-12-04
EP1480890B1 (en) 2008-10-22
US20050092751A1 (en) 2005-05-05
KR100987734B1 (ko) 2010-10-13
HK1080439A1 (en) 2006-04-28
MY138157A (en) 2009-04-30
JP4413011B2 (ja) 2010-02-10
CA2476393A1 (en) 2003-09-12

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