CN101107177B - 用于罐头的封闭装置 - Google Patents

用于罐头的封闭装置 Download PDF

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CN101107177B
CN101107177B CN200580038593XA CN200580038593A CN101107177B CN 101107177 B CN101107177 B CN 101107177B CN 200580038593X A CN200580038593X A CN 200580038593XA CN 200580038593 A CN200580038593 A CN 200580038593A CN 101107177 B CN101107177 B CN 101107177B
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peripheral
rib
side wall
peripheral side
closing appliance
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CN101107177A (zh
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A·C·T·阿尔瓦雷斯
P·B·拉巴特
M·J·瓜尔达
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Brasilata SA Embalagens Metalicas
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Abstract

一种用于具有圆形或多边形横截面的管体(10)这种类型的罐头的封闭装置,所述管体在下部封闭并且包括:设有上边缘(12)的周边侧壁(11);和结构环(13),其在管体(10)内部并且密封地结合到周边侧壁(11)上,以便限定罐头的上开口(14)和用于固定密封件(20)的承座(15),结构环(13)由周边侧壁(11)上的凹槽所形成的周边肋(16)限定,所述凹槽相对于周边侧壁的上端(12)轴向向后间隔开并且径向伸出到管体(10)中。

Description

用于罐头的封闭装置
技术领域
本发明涉及一种应用于用金属片获得的罐头的封闭装置,这种罐头的类型包括管体,该管体具有带圆形或多边形轮廓的周边侧壁,并且具有固定或结合底壁的下端部和在内部附有结构环的上端部,所述结构环限定开口,以进入罐头的内部,和承座,密封件被固定和保持在该承座上,所述密封件采取可拆卸和重封闭盖的形式,所述盖用金属片冲压或者用塑料材料模制而成,或者采取通常金属薄膜的形式,这种金属薄膜沿周边粘合到结构环上并且当第一次打开罐头时就限定被去除。
背景技术
逐渐消耗和散装的定期产品,比如某些食品、颜料等应当进行密封储存并且需要重封闭类型的盖,这样在储存的产品逐渐消耗期间可以按照需要多次重新封闭,以便保证罐头的密封性并保护其中的剩余内容物。
带有压配合盖的现有技术的罐头人所共知,其中,盖被压配合到结构环中,所述结构环在外部双重卷边到罐头的管体的周边侧壁的上边缘。当盖被配装在限定于结构环中的承座内时要确保密封性。在某些情况下,特别是当涉及食品时,需要设置防弊密封直到第一次打开罐头,并且所述密封通常由薄铝片或其他合适的材料限定,其与结构环一起双重卷边到周边侧壁的上边缘。
在其他已知的解决方案中,比如在巴西专利申请PI0203950-8和PI0303833-5所描述的那些解决方案中,压配合盖用塑料材料构造并且包括可拆卸地固定和保持在限定于结构环中承座内的密封部和设置在罐头的管体的上端部周围的、可人工破坏的密封。
另外已知的解决方案包括设置结构环,所述结构环的上表面限定用于固定和粘合密封边缘部分的环形表面,所述密封通常用铝箔制作并且当第一次打开罐头时就被人工拆下。在该构造方案中,设置一种塑料上盖(overlid)或盖,其可拆卸地配装在管体的周边侧壁的上边缘上,以便在取下密封之后保护罐头的内容物。
在上述三种类型的封闭装置的任何一种中,需要设置一种用于限定结构环的部件,其可任意地具有不同的形状,但所述部件必须在外部双重卷边到罐头的管体的周边侧壁的上边缘。设置结构环是强制性的,以使罐头的管体的开口上端部产生必要的结构强度,并且还限定用于固定密封件的承座,所述密封件采取金属盖、塑料盖或密封的形式。
然而,在已知的现有技术构造中,结构环被限定为相对于管体的独立部件,为了形成这种部件而消耗相应数量的锡板并且需要进行双重卷边,以便紧密地固定到罐头的周边侧壁的上边缘上。除了需要增加更多的原料之外,双重卷边已知结构环的操作显著地限制了降低罐头的制造成本的可能性。
发明内容
由于上面所述和为设置结构环而涉及的原料和制造成本的不便之处,本发明的目的是提供一种用于本文设想类型的罐头的封闭装置,所述封闭装置不仅消除了设置结构环作为不同于罐头的管体的金属片部件,而且还消除了将结构环双重卷边到罐头的管体的周边侧壁的上边缘的操作,然而却不会损害罐头的结构强度的特征和密封件承座的形成。
本发明的另一目的是提供一种上面所述的封闭装置,所述封闭装置使结构环能成形,以限定承座的不同型式,用于密封使能进入罐头内部的开口的不同元件将固定在所述承座上。本封闭装置应用于具有圆形或多边形横截面的管体这种类型的罐头,所述管体在下部封闭并且包括:设有上边缘的周边侧壁;和结构环,其在管体内部并且密封地结合到周边侧壁,以便限定罐头的上开口和用于固定密封件的承座。
根据本发明,结构环由周边侧壁上的凹槽所形成的周边肋限定,所述凹槽相对于周边侧壁的上端轴向向后间隔开并且径向伸出到管体中。
本发明提出的构造使罐头的结构环能由所述罐头的周边侧壁的变形限定,这不仅节省了用于冲压现有技术的双重卷边结构环的材料,而且还省去了所述环双重卷边到罐头的管体结构的操作。
限定新结构环的周边肋可以构造成达到限定用于固定密封件的承座,所述密封件可以采取用金属片冲压的或用塑料材料模制的压配合盖或防弊密封的形式,这种密封件沿周边和可拆卸地粘合到所述周边肋的环形上表面上。
附图说明
下面将参考作为本发明可能实施例的示例给出的附图描述本发明,其中:
图1是由罐头、密封件和上盖形成的组件的部分透视和分解图,表示本发明的封闭装置,并且其中密封件采取可拆卸地粘合到周边肋上的薄膜形式;
图2是类似于图1的部分透视和分解图,但是示出封闭装置的周边肋的另一实施例;
图3是图1中示出的并在密封件和上盖两者均安装到罐头管体的状态下的组件的部分直径截面图;
图4是类似于图3的视图,但是示出带有周边肋的另一实施例的封闭装置;
图5是由在安装状态下的罐头和压配合盖形成的、并使用本发明封闭装置的组件的部分直径截面图;
图5a是图5的放大详图,示出将设在承座和盖之间的密封垫的一种可能构造的解决方案;
图6是类似于图5的部分直径截面图,但是示出将用在本发明封闭装置中的盖另一种可能的构造;
图7是类似于图6的视图,但是示出应用于罐头的上部的封闭装置,所述罐头的上部区域设有缩径;和
图8是根据另一实施例构造的罐头管体的部分直径截面图。
具体实施方式
如附图中所示,本发明的封闭装置应用于通常由锡板制造并且具有带圆形或多边形横截面的管体10的罐头,所述管体在下部由底壁(未示出)封闭并且包括:设有上边缘12的周边侧壁11;和管体10内在的且密封接合到周边侧壁11的结构环13,以便限定所述罐头的上开口14;以及承座15,密封件20将固定在所述承座上,所述密封件可以具有如前面所述的不同构造。
附图中的图1-4涉及一种封闭装置,其中,密封件20通常由不渗透材料制造并且优选被金属化的薄膜21限定,所述薄膜可拆卸地粘合到周边肋16的上表面16a。该密封元件20这样构造,即罐头第一次打开时就被使用者确定从其安装位置去除,以便使能进入罐头的内部。
在该类型的构造中,周边肋16的上表面16a通常为平的并且正交于罐头的轴线,以便于密封和牢固地将薄膜21的边缘部分粘合到周边肋16上。
在图1和3所示的实施例中,周边肋16具有水平“U”的近似形状的横截面,其侧向腿部彼此平行,并且基部区域限定周边肋16的内边缘16b,根据密封件20所用的构造,所述内边缘的形状可以具有不同特征。在图2和4中,周边肋16具有水平“V”的近似形状的横截面,其圆形顶点限定周边肋16的内边缘16a并且使侧向腿部限定周边肋16的上表面16a,当密封件20采用密封罐头的薄膜21的形式时所述上表面优选地设置正交于罐头的轴线。
当采用可拆卸地粘合到周边肋16上的薄膜21形式的密封件20时,封闭装置还包括形成整体的上盖30,所述上盖在高于周边肋16的水平和通过周边部32具有将容纳在管体10内部的中间凹部31,所述周边部具有倒“U”的近似形状的横截面,且尺寸设定成紧配合到罐头管体10的周边侧壁11的上边缘12上。
在图1-4所示的实施例中,罐头的周边侧壁11的上边缘12向外、向下和向内弯曲,以便限定在外部结合到所述上边缘12的管肋17,在上边缘的结构加固中协同作用并在罐头的该区域中限定周边突起,除了充当上盖30周边部32的固定装置外,所述周边突起还起到可以配装到罐头承座15中其他类型的密封件的周边部的轴向止动器的作用。如图1-7所示,罐头的周边侧壁11的上边缘12的管肋17可以具有圆形或基本上圆形的横截面。
上盖30轴向保持到罐头的上边缘12通过这样的方式达到,即所述上盖30的周边部32具有径向内壁32a,所述径向内壁的尺寸设定和构造成可伸缩地和相对紧密地固定靠在周边肋16与上边缘12之间所限定的罐头的周边侧壁一部分的内表面上。所述周边部32还具有将要固定在罐头的所述上边缘12上的基壁32b和将要固定靠在管肋17上的径向外壁32c,从而环绕管肋17。上盖30的周边部32的径向外壁32c具有结合外管卷边33的自由下端边缘,所述外管卷边将对通常用塑料或其它类似物模制的上盖30的边缘部分产生更好的结构强度。
图5、6和7示出类似于图1-4所示罐头的构造,但是采用了另一种类型的密封件20,所述密封件不用粘合到周边肋16上的薄膜21。在实施本发明的上述方式中,周边肋16的内边缘16b被构造成限定优选圆形的凸弧,并且密封件20由盖22限定,在金属箔或塑料的整体件中,所述盖包括基壁23和周边壁24,所述周边壁具有上边缘25,其将要固定在限定于罐头上开口14上方的管体10的周边侧壁11的一部分上,该周边壁还具有周边凹槽26,所述周边凹槽的横截面采取径向朝外转向、优选圆形展开的凹弧的形式,并且被构造成当盖22固定在承座15上时便在其中配装周边肋16的内边缘16b。此外在用于压配合盖22的这种构造中,周边肋16还可具有任何适当形状的横截面,以限定用于固定和保持盖22的承座。在所示的实施例中,周边肋16具有水平“U”或“V”的近似形状的横截面,并且周边肋16的内边缘16b由“U”形轮廓的基部或者由“V”形轮廓的顶点形成。
在这种构造情况下,当盖22配装在承座15中时,周边肋16的内边缘16b通过罐头的周边侧壁11和盖22的周边壁中的至少一个的弹性变形配装在盖22的周边凹槽26的内部中,不仅使能获得将盖22密封到承座15的配装,而且还使盖22能有效和牢固地轴向保持到罐头的管体10上。
考虑到罐头的管体10通常由带有纵向接缝的金属箔制成,所述纵向接缝通过焊接金属箔的重叠纵向边缘获得,问题是在接缝区域中周边肋16与周边凹槽26之间要获得足够的密封。
因此,即使考虑到形成罐头的管体10的金属箔减小厚度,但最好是在盖22与管体10的周边肋16之间的区域内设置由与罐装产品相容的弹性变形材料制作的密封件50,以便适应管体10的纵向接缝区域中周边肋16的表面变化。
如图5a所示,对于可能做到的构造,弹性变形密封元件50采取环形垫片的形式,覆盖盖22的周边凹槽26的内表面的径向延长部的至少一部分,并且所述垫片可以用任何合适的材料制成,所述材料可以是含树脂的或不含树脂的,比如塑料溶胶。密封件50的尺寸可以设定成仅仅围绕周边肋16的内边缘16b,或者另外也可围绕周边肋16的上表面16a,甚至围绕盖22的周边壁24的某一延长部。
在用塑料构造盖22的情况下,如图6所示,根据盖的塑料接缝和将要储存的产品特征,可以不需要设置密封件50。
如图5、6和7所示,盖22的周边壁24可以构造成具有将要固定在周边肋16的上表面16a上的环形径向部24a和将要固定靠在限定于周边肋16及其上边缘12之间罐头的周边侧壁11的一部分的内表面上的轴向上部24b。该构造使在盖22与罐头的管体10的承座15的区域之间能获得更加有效的密封。
在图5所示的实施例中,盖22的周边壁11的上边缘25结合外管肋27,当封闭盖22时所述外管肋将通过周边肋16的内边缘配装在盖22的周边壁11的周边凹槽26的内部而固定在罐头的管体10的周边侧壁11的上边缘12上。
在图3-7所示的构造中,盖22的外管肋27固定在管体10的周边侧壁11的管肋17上。
如图6所示,盖22的周边壁11的上边缘25可以结合密封28,紧接在其周边侧壁11的管肋17的下方,所述密封包括将要相对紧密固定在管体10周围的裙边28a,所述下裙边28a通过桥接件28b在上结合到盖24的周边壁11的上边缘25,当第一次打开盖22而受到一定力时所述桥接件将被人工破坏。
应当注意的是,密封28的下裙边28a位于管肋17下方并且起到止动器的作用,所述止动器防止盖22被取下,且不破坏桥接件28b和解除密封28。
如图7所示,周边肋16可以设在管体10的周边侧壁11的一个区域内,所述区域的直径基本上小于罐头的管体10的剩余部分的直径,以便使盖22的密封28保持容纳在管体10的剩余部分的轴向突出的内部。
在图1-7所示的实施例中,管肋17的形状和尺寸被设定成使其保持在所设周边肋16以上的水平,从而使形成周边肋16并限定在周边侧壁11中的周边凹槽能在罐头的侧向观察中可看得见。
除了涉及罐头的精加工操作的问题之外,在图1-7所示的实施例中,管肋17的形状将管体10的开口上部中的罐头结构的增强效果限制到周边肋16与上边缘12之间所限定的延长部。
图8示出用于罐头的管体10的另一种构造方案,根据这种方案管肋17起到罐头的审美装饰件和罐头的管体10的开口上部的结构增强件的作用。
根据这种改进,管肋17继续在外部结合到周边侧壁11的上边缘12,但是向下延伸超出周边肋16,以便覆盖在所述周边侧壁11中形成周边肋16的凹槽。
如图所示,管肋17被构造成使其自由下端部17a向内和向上弯曲并且设置在周边肋16的下方靠近管体10的周边侧壁11。
在图8例举的构造中,管肋17的自由下端部17a具有末端区域17b,所述末端区域向上弯曲并且侧向固定靠在罐头的管体10的周边侧壁11上。
本文提出的构造使管肋17能完全覆盖形成周边肋16的凹槽,从而为罐头提供更佳的整体性外观并且产生更大轴向延长部的结构增强。
管肋17通常沿罐头轴线的方向被构造成长椭圆形形状并且在一个区域中具有基本平行于管体10的周边侧壁11的中间延长部17c,周边肋16被结合在所述区域中,因此,管肋17采取围绕罐头的上端部一种条带的形式。
尽管单独地描述和举例说明了本发明的一些实施例,但是应当理解,在不脱离附属权利要求中所限定的构造原理的情况下,可以进行关于元件的形式和配置的改变。

Claims (19)

1.一种用于具有管体(10)类型的罐头的封闭装置,所述管体在下部封闭并且包括:设有上边缘(12)的周边侧壁(11);和结构环(13),其在管体(10)内部并且密封地结合到周边侧壁(11),以便限定罐头的上开口(14)和用于固定第一密封件(20)的承座(15),所述结构环(13)由周边侧壁(11)上的凹槽所形成的周边肋(16)限定,所述凹槽相对于周边侧壁的上边缘(12)轴向地向后间隔开并且径向地伸入到管体(10)里,其特征在于,周边肋(16)具有被构造成限定凸弧的内边缘(16b),第一密封件(20)由盖(22)限定,在整体件中,所述盖包括基壁(23)和周边壁(24),所述周边壁具有上边缘(25),其将固定在限定于罐头的上开口(14)之上的管体(10)的周边侧壁(11)的一部分上;还具有周边凹槽(26),其横截面采取径向朝外转向的凹弧形式,并被构造成当盖(22)固定在承座(15)中时便在其中配装周边肋(16)的内边缘(16b)。
2.如权利要求1所述的封闭装置,其特征在于,周边肋(16)的内边缘(16b)被构造成圆形凸弧,并且周边凹槽(26)的横截面由圆形凹弧限定。
3.如权利要求1所述的封闭装置,其特征在于,周边肋(16)具有平的“U”和“V”轮廓中任何一个的近似形状的横截面并且周边肋(16)的内边缘(16b)形成在“U”形轮廓的基部和“V”形轮廓的顶点中的一个中。
4.如权利要求1所述的封闭装置,其特征在于,周边肋(16)具有环形上表面(16a),并且盖(22)的周边壁(24)具有将要固定靠在周边肋(16)的上表面(16a)上的环形径向部(24a)和将要固定靠在限定于周边肋(16)与周边侧壁(11)的上边缘(12)之间的周边侧壁(11)上的轴向上部(24b)。
5.如权利要求1所述的封闭装置,其特征在于,该装置包括用弹性变形材料制作的第二密封件(50),所述第二密封件安装在管体(10)的周边肋(16)与盖(22)的周边凹槽(26)之间。
6.如权利要求1所述的封闭装置,其特征在于,第二密封件(50)采取环形垫片的形式,覆盖盖(22)的周边凹槽(26)的径向延长部的至少一部分。
7.如权利要求4所述的封闭装置,其特征在于,盖(22)的周边壁(24)的上边缘(25)结合外管肋(27),所述外管肋将要固定在罐头的管体(10)的周边侧壁(11)的上边缘(12)上。
8.如权利要求7所述的封闭装置,其特征在于,管体(10)的周边侧壁(11)的上边缘(12)在外部结合管肋(17),盖(22)的周边壁(24)的外管肋(27)固定在所述管肋(17)上。
9.如权利要求4所述的封闭装置,其特征在于,管体(10)的周边侧壁(11)的上边缘(12)在外部结合管肋(17),并且盖(22)的周边壁(24)的上边缘(25)结合第三密封件(28)的延长部,所述延长部包括下裙边(28a),所述下裙边将紧接在其周边侧壁(11)的管肋(17)的下方紧密地固定在管体(10)的周围,并且通过桥接件(28b)在上结合到盖(22)的周边壁(24)的上边缘(25),当第一次打开盖(22)而受到一定力时所述桥接件将被人工破坏。
10.如权利要求1所述的封闭装置,其特征在于,管体(10)的周边侧壁(11)的上边缘(12)向外、向下和向内弯曲,以便限定管肋(17),所述管肋在外部结合到周边侧壁(11)的上边缘(12)并且向下延伸超出周边肋(16),以便覆盖形成周边肋(16)的凹槽。
11.如权利要求10所述的封闭装置,其特征在于,管肋(17)具有自由下端部(17a),所述自由下端部向内和向上弯曲并且设置在周边肋(16)的下方,靠近管体(10)的周边侧壁(11)。
12.如权利要求10所述的封闭装置,其特征在于,管肋(17)的自由下端部(17a)具有末端区域(17b),所述末端区域向上弯曲并且侧向固定靠在管体(10)的周边侧壁(11)上。
13.如权利要求10所述的封闭装置,其特征在于,管肋(17)沿罐头轴线的方向为长椭圆形。
14.如权利要求10所述的封闭装置,其特征在于,管肋(17)在管体的一个区域中具有基本平行于管体(10)的周边侧壁(11)的中间延长部(17c),周边肋(16)被结合在所述区域中。
15.一种用于具有管体(10)类型的罐头的封闭装置,所述管体在下部封闭并且包括:设有上边缘(12)的周边侧壁(11);和结构环(13),其在管体(10)内部并且密封地结合到周边侧壁(11),以便限定罐头的上开口(14)和用于固定第一密封件(20)的承座(15),所述结构环(13)由周边侧壁(11)上的凹槽所形成的周边肋(16)限定,所述凹槽相对于周边侧壁的上边缘(12)轴向地向后间隔开并且径向地伸入到管体(10)里,其特征在于,管体(10)的周边侧壁(11)的上边缘(12)向外、向下和向内弯曲,以便限定管肋(17),所述管肋在外部结合到周边侧壁(11)的上边缘(12)并且向下延伸超出周边肋(16),以便覆盖形成周边肋(16)的凹槽。
16.如权利要求15所述的封闭装置,其特征在于,管肋(17)具有自由下端部(17a),所述自由下端部向内和向上弯曲并且设置在周边肋(16)的下方,靠近管体(10)的周边侧壁(11)。
17.如权利要求15所述的封闭装置,其特征在于,管肋(17)的自由下端部(17a)具有末端区域(17b),所述末端区域向上弯曲并且侧向固定靠在管体(10)的周边侧壁(11)上。
18.如权利要求15所述的封闭装置,其特征在于,管肋(17)沿罐头轴线的方向为长椭圆形。
19.如权利要求15所述的封闭装置,其特征在于,管肋(17)在管体的一个区域中具有基本平行于管体(10)的周边侧壁(11)的中间延长部(17c),周边肋(16)被结合在所述区域中。
CN200580038593XA 2004-11-12 2005-11-10 用于罐头的封闭装置 Expired - Fee Related CN101107177B (zh)

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BRPI0504528 BRPI0504528C1 (pt) 2005-05-06 2005-05-06 aperfeiçoamento em arranjo de fechamento para lata
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JP2008519737A (ja) 2008-06-12

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