CN103517855A - 可再闭合的柔性膜包装产品及制造方法 - Google Patents
可再闭合的柔性膜包装产品及制造方法 Download PDFInfo
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- CN103517855A CN103517855A CN201280023402.2A CN201280023402A CN103517855A CN 103517855 A CN103517855 A CN 103517855A CN 201280023402 A CN201280023402 A CN 201280023402A CN 103517855 A CN103517855 A CN 103517855A
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Abstract
一种可再闭合的柔性膜包装可具有:柔性膜,其具有形成折叠边缘(34)的折叠部、至少两个相对的自由边缘(26,28),以及至少前面板(64)和后面板(66),相对的自由边缘密封在一起来形成至少一个密封边缘,使得前面板和后面板限定内部空间;形成翻片的前面板的柔性膜中的划线(38),其在朝折叠边缘移动时限定开口且具有翻片与膜分离的力;以及从至少两个相对的自由边缘的边缘到边缘不间断延伸的标签(24),其由压敏粘合剂附接到膜(22)上,且延伸超过前面板上的划线以再密封由翻片限定的包装开口,压敏粘合剂具有所述膜与标签之间的剥离强度,其大于沿划线的分离力,且标签还具有限定拉片(36)的无粘性部分。
Description
相关申请
本申请请求享有2011年3月17日提交的美国临时专利申请第61/453872号的权益,该申请通过引用以其整体并入本文中。
技术领域
本产品和方法涉及包装,且具体涉及在具有弱化线的膜上具有闭合层(标签)的可再闭合的柔性滚动包裹式包装产品及方法。
背景技术
柔性包装通常用于固持和密封产品来用于运输和储存。其通常用于多种消费产品,包括食品(例如,薄脆饼套筒(cracker sleeve)、口香糖条、巧克力棒、曲奇等)。通过一种途径,包装可为层合膜,且采取容纳在其中的产品的形状。包装可由密封来形成内腔的多个壁形成。实例可包括流动包裹式包装、三侧封口、形态填充封口等。
流动包裹型的柔性膜包装可使用连续的膜(卷筒)来在组装期间封装产品。在一个构造中,流动包裹(也称为水平或垂直的翅形封口或搭接封口包裹、端部封口包裹、水平装袋和枕袋包装)可将诸如聚乙烯或聚丙烯的膜定位在产品附近,围绕产品包裹膜,从膜的端部形成封口,然后在产品的任一侧处形成封口。封口可为永久性的,且提供一定水平的结构完整性。柔性膜包装具有许多其它优点。它们可以以大致低于刚性容器的成本制造,为轻量的而导致降低运输成本,且容易包装而导致较小储存空间。
尽管有这些优点,但柔性包装有时可能难以开启,且在使用者在其首次开启之后想再闭合/再密封包装时,如,在包装内存在多于单次使用的产品时,通常不适合。本领域中已知的尝试为提供使用小心的闭合层(标签)来再闭合柔性包装的一些手段,闭合层需要在膜中构造的开口上将标签精确地放置(套准)在包装上(大体上见授予Ponsi的美国专利5,725,311)。
发明内容
因此,本文提供了容易开启的柔性流动包裹式包装膜/卷筒的实施例,其具有在流动包裹式膜中的划(撕开)线上方层合的闭合层/标签,膜限定包装开口。膜与标签之间的压敏粘合剂(PSA)可允许容易开启和再闭合或再密封,同时保持包装的完整性。
在一个实施例中,一种可再闭合的柔性膜包装可具有柔性膜,其具有形成折叠边缘的折叠部、至少两个相对的自由边缘,以及至少前面板和后面板,相对的自由边缘一起密封来形成至少一个密封边缘,使得前面板和后面板限定内部空间;形成翻片的前面板的柔性膜中的划线,其在朝折叠边缘移动时限定开口,且具有用于使翻片与膜分离的力;以及从至少两个相对的自由边缘的边缘到边缘不间断延伸的标签,其由压敏粘合剂附接到膜上,且延伸超过前面板上的划线以再密封由翻片限定的包装开口,压敏粘合剂具有膜与标签之间的剥离强度,其大于沿划线的分离力,且标签还具有限定拉片的无粘性部分。
在一些实施例中,标签可延伸超过折叠边缘至后面板。划线可为弓形或穿孔。在一些实施例中,划线端部可终止于撕开传播减少的图案中,如,'J形钩'或'笑脸形'。
在一些实施例中,标签可在前面板和后面板上与折叠边缘等距延伸。膜可为印刷的外包装层合膜,其具有连结到白色OPP包装膜上的背面印刷的OPP透光膜。在一些实施例中,OPP透光膜可为大约90至230范围内的规格,且白色OPP包装膜可为大约90至230的范围内的规格。在一些实施例中,OPP透光膜可为大约118的规格,且白色OPP包装膜大约118。标签可为在大约160至240的范围中的规格的BOPP透光膜。在其它实施例中,膜可为大约200的规格的BOPP透光膜。通过一种途径,标签的非粘合边缘可为折叠到其自身上的标签的一部分,以便PSA表面邻近彼此。
在一种途径中,可再闭合的包装可具有第一基底,其形成多个面板,面板具有密封来形成用于收纳物件的内腔的周缘;由至少第一面板中的弱化线限定的翻片,其在第一面板在弱化线处分开时限定内腔的开口;第二基底,其附连到第一基底上,且具有延伸超过弱化线来形成包装再密封区的第一部分,以及从第一面板的一部分延伸至第二面板的一部分的第二部分,且其中第二基底从一个周缘不间断地延伸至相对的周缘。在一些实施例中,弱化线可为穿孔。在此途径的其它实施例中,第一基底可为印刷的外包装层合膜,其包括连结到白色OPP包装膜上的背面印刷的定向聚丙烯(OPP)透光膜。另外,在一些实施例中,OPP透光膜可为大约48至230的范围内的规格,且白色OPP包装膜可为大约48至230的范围内的规格。在其它途径中,OPP透光膜可为大约118的规格,而白色OPP包装膜为大约118;第二基底可为大约160至240的范围内的规格的BOPP透光膜;第一基底可为大约200的规格的BOPP透光膜;以及/或者第二基底的非粘性边缘可为折叠到其自身上的第二基底的一部分,以便PSA表面邻近彼此。
在一些实施例中,用于形成可闭合的柔性包装的层合层可具有柔性膜的连续卷筒,其具有纵轴线;利用压敏粘合剂沿纵轴线施加到柔性膜上的连续标签;以及形成类似的包装形成坯料的连续系列的卷筒和标签,各个坯料的柔性膜具有弱化线,弱化线沿标签形成膜中的翻片以限定开口。在一些实施例中,划线可沿卷筒在纵向方向上为连续的;弓形的;或正弦形的。标签的一部分可无粘性来限定拉片。
在一些实施例中,可闭合的包装可具有多层层合膜,层合膜至少具有密封剂层、阻隔层、粘合层和加强层;形成在多层层合膜中的弱化线,弱化线至少部分地限定包装开口;以及利用粘合剂附接到多层层合膜上且在弱化线上延伸的闭合层。
在其它实施例中,层合膜还可具有聚酯层和附加的粘合层。 在其它实施例中,层合膜还包括释放层。在又一些实施例中,加强层可具有纤维基底。
在其它实施例中,用于形成可再闭合的柔性包装层合层的方法可具有以下步骤:提供具有纵轴线的柔性膜的连续卷筒;利用压敏粘合剂(PSA)沿纵轴线将连续标签施加到柔性膜上;以及在卷筒上划线来形成类似的包装形成坯料的连续系列且沿标签形成膜中的翻片以限定开口。在其它实施例中,该方法可可选为增加以下步骤:在将连续标签施加到柔性膜上的步骤之前将减弱标签施加到PSA上来形成拉片。在其它实施例中,该方法可可选为增加以下步骤:在将连续标签施加到柔性膜上的步骤之前从标签除去内衬来露出PSA。在其它实施例中,该方法可可选为增加以下步骤:在将连续标签施加到柔性膜上的步骤之后对标签划线;以及除去标签划线基体。在其它实施例中,该方法可可选为增加以下步骤:在产品上折叠卷筒来创造折叠边缘;以及在与卷筒的自由边缘相对的折叠边缘上形成封口,以形成前面板和后面板来限定内部空间以容纳产品。在其它实施例中,该方法可可选为增加以下步骤:切割封口来限定独立的包装。
在一些实施例中,用以形成可再闭合的柔性膜包装的设备可具有层合辊,以利用压敏粘合剂(PSA)将具有纵轴线的柔性膜的连续卷筒沿纵轴线层合至连续标签;第一装置,其用以在将柔性膜层合至标签之后产生形成在卷筒中的弱化线,形成类似包装形成坯料的连续系列,以及沿标签在膜中形成翻片以限定开口;折叠装置,其用以在产品上产生折叠边缘;以及密封装置,其用以在卷筒折叠边缘的相对自由边缘上形成封口,以形成前面板和后面板来限定内部空间以容纳产品。在其它实施例中,该设备可可选为具有第二划线装置以在层合至卷筒上之后对标签划线。在其它实施例中,该设备可可选为具有切割装置以切割封口来形成独立包装。
在其它实施例中,一种包装可由具有以下步骤的工艺来形成:提供卷筒膜;利用粘合剂将卷筒标签连续地施加至卷筒膜上;切割卷筒标签来形成标签;将未形成标签的卷筒标签从卷筒膜除去;以及在对应于标签的卷筒膜中形成弱化线来限定包装开口。该包装还可通过将具有标签的卷筒膜分离成包装坯料形成:通过围绕食品包裹具有标签的卷筒膜且形成独立的柔性膜包装;或通过使膜包装与彼此分离。在一些实施例中,标签分别可具有包括拉片的第一部分,第一部分设置成朝拉片超过弱化线。可选的是,定形的包装标签的第一部分还可具有带压敏粘合剂的再密封部分。在一些实施例中,标签还可具有设置成远离拉片超过弱化线的第二部分。在其它实施例中,标签的第二部分可包括一对凸片。在一些实施例中,包装可利用围绕食品折叠卷筒膜的附加步骤来形成,其中包装可包括包装折叠部,且标签的第二部分的一对凸片围绕包装折叠部延伸。
在其它实施例中,一种形成一系列可再闭合的膜包装的方法可包括以下步骤:提供卷筒膜;利用粘合剂将卷筒标签连续地施加至柔性卷筒膜;切割卷筒标签来形成包装标签,除去未形成标签的卷筒标签;以及在对应于标签的卷筒膜中形成弱化线来限定包装开口。
附图说明
图1示出了处于开启位置的本实施例的示例性可再闭合的柔性膜包装的透视前视图;
图2示出了处于闭合位置的本实施例的示例性可再闭合的柔性膜包装的透视前视图;
图3示出了本实施例的示例性可再闭合的柔性膜包装的透视后视图;
图4示出了本实施例的示例性可再闭合的柔性膜包装的组装之前的膜/标签层合层的区段的平面视图;
图5示出了沿图2中的截面线V-V的本实施例的示例性可再闭合的柔性膜包装的局部截面视图;
图6示出了使用具有连续标签的本实施例的划线的柔性膜包装来形成和包装产品的示例性在线组装过程的侧视图;
图7示出了使用具有连续标签的本实施例的划线的柔性膜包装来形成和包装产品的示例性组装过程的端部密封装置的沿图6中的截面线VII-VII截取的截面视图;
图8示出了使用具有连续标签的本实施例的划线的柔性膜包装来形成和包装产品的示例性组装过程的侧部封口和切割装置的沿图6中的截面线VIII-VIII截取的截面视图;
图9示出了用于本实施例的示例性可再闭合的柔性膜包装的具有向外定向的J形钩构造的备选弓形划线;
图10示出了用于本实施的示例性可再闭合的柔性膜包装的具有'笑脸'构造的备选弓形线;
图11示出了用于本实施例的示例性可再闭合的柔性膜包装的具有弧形构造外侧的成对(包装完整性特征)PIF的备选弓形划线;
图12示出了用于本实施例的示例性可再闭合的柔性膜包装的具有圆角构造的备选梯形划线;
图13示出了用于本实施例的示例性可再闭合的柔性膜包装的具有圆角构造的备选'盒形'划线;
图14示出了用于本实施例的示例性可再闭合的柔性膜包装的具有圆形边缘构造的备选普通弓形划线;
图15示出了用于本实施例的示例性可再闭合的柔性膜包装的备选大致直线的切割划线;
图16示出了用于本实施例的示例性可再闭合的柔性膜包装的具有偏移远侧凸片端部构造的带直线侧部的备选宽弓形划线;
图17示出了用于本实施例的示例性可再闭合的柔性膜包装的具有一对凹痕PIF的备选弓形划线构造;
图18示出了用于本实施例的示例性可再闭合的柔性膜包装的备选弓形划线向内定向的J形钩构造;
图19示出了用于本实施例的示例性可再闭合的柔性膜包装的备选的'V'形划线构造;
图20示出了用于本实施例的示例性可再闭合的柔性膜包装的备选弓形和穿孔划线构造;
图21示出了用于本实施例的示例性可再闭合的柔性膜包装的具有弓形划线构造内的成对PIF的备选弓形划线;
图22示出了用于本实施例的示例性可再闭合的柔性膜包装的备选'深'弓形划线向内定向的J形钩构造;
图23示出了用于本实施例的示例性可再闭合的柔性膜包装的具有圆点的备选'V'形划线构造;
图24示出了用于本实施例的示例性可再闭合的柔性膜包装的具有弓形划线构造内的备选PIF的备选弓形划线;
图25示出了用于本实施例的示例性可再闭合的柔性膜包装的具有弓形划线构造内的备选成对PIF的备选弓形划线;
图26示出了用于本实施例的示例性可再闭合的柔性膜包装的具有撕开传播限制物的带弓形划线构造内的备选PIF的备选弓形划线;
图27示出了用于本实施例的示例性可再闭合的柔性膜包装的具有撕开传播限制物的带弓形划线构造内的备选成对PIF的备选弓形划线;
图28示出了具有划线'正弦波'形标签边缘构造的标签辊的区段;
图29示出了处于闭合位置的本实施例的第一备选示例性可再闭合的柔性膜包装的透视前视图;
图30示出了处于开启位置的本实施例的第一备选示例性可再闭合的柔性膜包装的透视前视图;
图31示出了处于闭合位置的本实施例的第二备选示例性可再闭合的柔性膜包装的透视前视图;
图32示出了处于开启位置的本实施例的第二备选示例性可再闭合的柔性膜包装的透视前视图;
图33示出了使用具有连续标签的本实施例的划线的柔性膜包装来形成和包装产品的示例性脱机组装过程的侧视图;
图34示出了处于开启位置的本实施例的第一备选示例性可再闭合的柔性膜包装标签的透视前视图;
图35示出了处于闭合位置的本实施例的第二备选示例性可再闭合的柔性膜包装的透视前视图;
图36示出了处于开启位置的本实施例的第二备选示例性可再闭合的柔性膜包装的透视前视图;
图37示出了根据本实施例的一个途径的在示例性可再闭合的柔性膜包装组装好之前的膜/标签层合层的区段的平面视图;
图38示出了根据本实施例的一个途径的在示例性可再闭合的柔性膜包装组装好之前的膜/标签层合层的区段的平面视图;
图39示出了根据本实施例的一个途径的在标签层合之前和在示例性可再闭合的柔性膜包装组装之前的膜的区段的平面视图;
图40示出了根据本实施例的一个途径的在示例性可再闭合的柔性膜包装的膜/标签层合层的区段的平面视图;
图41示出了根据本实施例的一个途径的在示例性可再闭合的柔性膜包装组装好之前的膜/标签层合层的区段的平面视图;
图42示出了根据本实施例的一个途径的在示例性可再闭合的柔性膜包装组装好之前的膜/标签层合层的区段的平面视图;
图43示出了沿图42中的截面线XLIII/XLIV-XLIII/XLIV截取的本实施例的示例性可再闭合的柔性膜包装的膜/标签层合层的区段的局部截面视图;
图44示出了沿图42中的截面线XLIII/XLIV-XLIII/XLIV截取的本实施例的示例性可再闭合的柔性膜包装的膜/标签层合层的区段的局部截面视图;
图45示出了根据具有分离的标签的本实施例的一个途径的使用划线的柔性膜包装形成和包装产品的示例性在线组装过程的顶视图;
图46示出了处于闭合位置根据本实施例的一个途径的示例性可再闭合的柔性膜包装的透视前视图;
图47示出了根据本实施例的一个途径的示例性可再闭合的柔性膜包装的透视后视图;以及
图48示出了使用具有连续标签的本实施例的划线柔性膜包装形成和包装产品的示例性组装过程的端部封口和切割装置的沿图45中的截面线XLVIII-XLVIII截取的截面视图;
图49-53示出了本实施例的示例性可再闭合的柔性膜包装的开口的备选划线;
图54示出了处于闭合位置的根据本实施例的一个途径的示例性可再闭合的柔性膜包装的透视前视图;以及
图55示出了根据本实施例的一个途径的示例性可再闭合的柔性膜包装的透视后视图。
具体实施方式
本文提供了容易开启且可再闭合的包装的各种实施例,在一些实施例中,其具有由柔性卷筒膜基底形成的前面板和后面板,柔性卷筒膜基底具有闭合层或设置在其上的标签基底。标签可连续地施加到膜上。在一些实施例中,标签可在顶部切割来形成定形的连续标签,或甚至与连续施加的标签分离的标签包装。在保持包装完整性的同时,可再闭合的包装可容易地开启和再闭合。通过一种途径,可再闭合的包装通过压敏粘合剂与连续标签层合的柔性膜形成。在一种构造中,示范性的四侧包装包括柔性膜的折叠卷筒,其形成前面板和后面板,前面板和后面板具有四个周缘,一个折叠边缘和三个密封边缘。
在此构造中,不需要翅形封口或搭接封口。通过一种途径,标签可延伸超过可再闭合的包装的一个面板,且可在膜的周缘的两侧上延伸(例如,边缘封口或折叠线)。一方面,标签延伸超过形成在第一边缘上的卷筒中的预先构造的划线(即,撕开线或弱化线)。要注意的是,弱化线可包括有损膜的完整性的任何工作,这可包括完全分开膜(例如,图15)。
在面对柔性卷筒膜的连续标签的表面上,连续标签可具有无粘合剂的区域(例如,沿第一边缘的全部或一部分),以提供拉片来便于包装的容易开启。此外,此类无粘合剂的拉片可设置在具有划线的包装的侧部上,使得无粘合剂的拉片设置成邻近包装开口或翻片。无粘合剂的拉片可通过产生PSA的减弱区域来形成。在一种途径中,PSA通过在标签的一部分上折叠来在连续标签的表面的一部分上减弱。标签的第二边缘可在周缘上延伸至相邻的面板(例如,后面板)的一部分。但要注意的是,在其它构造中,可存在两个以上的面板,如,具有六个面板的盒。在此情况下,标签可在其上延伸的相邻面板可为顶部面板、侧部面板或底部面板。
尽管本实施例描述成用于层合在柔性卷筒的划线上的标签,但提供的若干变型在这些实施例的范围内。例如,如本文所述,包装可构造成用于在初次开启之后'再闭合'产品体积。将注意的是,在一些实施例中,再闭合特征也可再密封包装。换言之,包装可气密性地再密封(或接近气密性地密封)来保持产品新鲜和/或保护防止水分损失。该再密封特征对于可具有针对环境大气的初始密封(例如,提供气体和水分的阻隔层)的包装实施例可能是有益的。再密封特征可延长产品新鲜时间。
还要注意的是,本实施例可应用于使用多种包装材料的多种包装设计。例如,描述了四侧包装,但包装可为圆形、椭圆形或具有任意数目的侧部、侧部封口、折叠边缘、形状和它们的组合。另外,描述了两个面板的包装,但包装可包括多个面板(如,盒)、圆形套筒(如,薄脆饼的圆形套筒)等。包装材料可包括本文所述的各种聚合物层合膜,以及,纸、纸板、纸聚合箔层合层、包覆的聚合物、涂料纸(例如,蜡纸)等,以及它们的组合。尽管本实施例描述为用于食品和口香糖应用,但实施例同样可应用于非食物应用,如,医学、药品、工业包装应用。
现在转到附图,图1至图3中示出了大体上以20指出的本包装实施例的一个构造。如大体上示出那样,包装20可由通过压敏粘合剂PSA32层合到闭合层基底(标签24)上的膜基底(卷筒)22形成。将注意的是,尽管包装描述为PSA粘合剂,但可使用其它类型的粘合剂,包括具有永久性粘合剂的部分等,和它们的组合。为了示范的目的,包装20可具有两个面板(前面板64、后面板66)和周缘部分,如,两侧封口26、端部封口28和折叠膜边缘34。在任何情况下,侧部封口和折叠膜边缘都形成密封的周缘。膜22可具有由标签24覆盖的划线(撕开线/弱化线)38。标签24可具有由本文所述的多种方法形成的非粘合区域36,以便于容易开启来露出产品30。
本文所述的所示柔性流动包裹实施例大体上包括设计成用于多份的包装,其由具有两个(2)侧部封口和端部封口的划线柔性材料形成,其形成前面板64和后面板66。封口可为气密性(或大致气密性)封口,且可由热封、冷封、声波、低粘性密封和它们的组合的工艺形成,且优选为非可剥离的。实施例可不但提供光阻隔层,而且还构造成用以提供开启之前高达24个月的气体和水分阻隔层。在一些实施例中,如用于口香糖,包装可构造成用以在6到18个月内保持产品新鲜。给定层合膜的柔性,包装形状通常由产品内容物影响。
包装20可通过将膜22的相对侧连结而形成端部封口28来形成。在一个途径中,包装可由膜标签层合层形成,以允许包装在多个线路中(例如,图45中所示的两个线路)中并行形成。膜22可具有下文所述的膜的内表面上的密封剂层。还可提供侧部封口26。
图29-30、图31-32、图46-47和图54-55中可找到备选的包装实施例。在图29-30中,连续的标签24i可沿前面板64的纵轴线在划线上施加,标签24i定向成朝端部封口28开启。在一种途径中,划线38i具有中间的'J形钩'构造,以减少超过划线的撕开传播。'J形钩'可构造成用于置于端部封口28的内缘处或接近内缘。附加封口可应用于将标签24i装固在端部封口28(未示出)的区中。例如,附加的热或密封剂可应用于将标签24i密封在端部封口28的区中以使其为非可剥离的封口。
在图31-32和图54-55中,示出了具有翅形封口73的流动包裹式包装。可选的是,还可使用搭接封口。另外,标签(其可为连续的或分离地设置在包装上)可连续地施加到具有翅形(或搭接)封口的面板的纵轴线上。作为备选,标签可连续地应用于不具有翅形(或搭接)封口的包装面板的纵轴线上。还要注意的是,该实施例和本文公开的其它实施例可应用于任意数目的包装和产品构造。
如本文使用的标签、柔性膜或粘合剂的连续施加指出了这些的施加沿施加方向是不间断的。此外,如本文使用的那样,连续包装标签可延伸包装的整个长度或宽度,且从包装的一个边缘到相对边缘是不间断的。作为备选,分离的包装标签为仅覆盖包装的宽度和长度的一部分的标签,且不会延伸穿过包装的全部宽度或长度。通过一种途径,连续卷筒标签可连续地施加到卷筒膜上,其然后形成为具有连续包装标签的包装。通过另一种途径,分离的包装标签可在连续施加中施加,使得连续卷筒标签施加到卷筒膜上。在此构造中,标签切口如顶部切口可形成在连续地施加的卷筒标签中。标签切口可限定定形的包装标签,且不形成定形的包装标签(即,未使用标签基体)的连续施加的标签的部分可从柔性卷筒膜除去。因此,连续施加的卷筒标签的一部分可从卷筒膜除去,从而形成设置在卷筒膜上的分离的包装标签。
图35-36示出了使所有四侧都密封的本实施例的包装的第三备选实施例。这包括添加第二端部封口84。
图46-47示出了本实施例的包装的另一个途径,该包装具有三个封口和在折线的一部分上延伸的分离的标签。
在本实施例中,膜22可由多种材料和层合层形成。膜22可为具有若干层的层合层,如,聚对苯二甲酸乙二醇酯(PET)层和定向聚丙烯(OPP)层,或可选的单层聚合物。单层聚合物的实例可包括聚丙烯、聚乙烯、聚乳酸(PLA)、聚酯等。PET层可为柔性至半刚性的,这取决于其厚度。可使用PET,因为其重量很轻、坚固,且在包装规格期望时可具有较高透明度。其还可用作氧气(气体)和水分阻隔层。OPP层可进一步增加强度,且为针对渗透性的另一个阻隔层。层合构件可由粘合剂或由挤出聚合物连结。膜22可为轧制或形成为坯料且由层合或共同挤出的膜结构制成的柔性片材料。大体上,膜22可在大约30至500的规格的范围内。在使用聚酯膜的实施例中,膜应当为至少48的规格。
膜厚度还可为对气体、水分和光的期望阻隔、期望的结构完整性的水平,以及划线的期望深度(下文所述)的函数。此外,膜规格(和标签规格)可基于期望的包装刚度来选择。在标签延伸超过折线至后面板的实施例中,标签可进一步提供包装刚度。
膜22可为可热密封的共聚物。在一些实施中,可热密封的聚合物在50至300摄氏度之间形成封口。膜22还可为压力密封膜。在一些实施例中,该压力密封膜在大约0.7Kg/cm至7.0Kg/cm的压力之间形成封口,且优选为大约5.6Kg/cm。
膜22可选为还具有附加层合层。可选的密封剂层(见封口26,图5;图43和图44中的封口94)可层合,以便于形成在包装期间包围产品的封口。因此,密封剂层将定向在指向包装内部的膜表面上,且可用作挤出层合层或作为与膜22的粘合层合层。密封剂层可为多种聚合物密封剂,如,热活化聚合物密封剂层,如聚乙烯、乙烯-乙酸乙烯酯共聚物(EVA)、离聚物(如,由DuPont以商品名SURLYN销售的一种)、matallicine催化聚合物等。颗粒成分还可添加至密封剂层,如有机粘土、防结块剂、滑移成分如芥酸酰胺、聚丁烯等。密封剂层26和94可为大约20微米厚。冷密封剂和压力密封剂在本实施例的范围内也是可能的。将注意的是,当预计为食品时,将使用食品级密封剂。密封剂层26可覆盖膜22的整个内表面,或仅覆盖需要密封的位置(如图5中所示)。可选的是,在未提供密封剂层的情况下,足够的热可施加至聚合物来将膜熔合/熔化在一起以形成密封。
加强剂可添加至膜22的成分中,如,聚酰胺聚合物(例如,尼龙)和纤维成分,如纸。加强剂可添加为挤出膜的成分或作为单独的层。尼龙可添加为通过粘合剂保持到膜结构上的层合层,可选为其中膜附接到尼龙的各侧上(即,结合层)。为了示范的目的,尼龙层可为膜厚度的大约百分之8,或大约0.004mm。
可选的膜层还可包括墨水层(未示出)。例如,一个特定的层合层可包括墨水和设置在PET与OPP层之间的底涂料。金属化层、纸和纸板层和各种其它层合层组合在优选实施例内也是可能的。
如图所示,膜22可定形为袋或套筒型包装,其具有正方形边缘,但实施例还可以以各种曲线形状实施,如,直线(套筒)或椭圆包装,这取决于容纳在其中的期望的产品。
现在转到图5,本实施例的可能的膜层合层22的截面示为包括聚对苯二甲酸乙二醇酯(PET)层44、聚乙烯(PE)层46和可选的金属化定向聚丙烯(MET OPP)层48。PET层44可为柔性至半刚性的,这取决于其厚度。PET是优选的,因为其重量很轻且坚固,且具有较高透明度。其可用作氧气(气体)和水分阻隔层。PE层46可进一步增大强度,且为针对渗透性的另一个阻隔层。在所示的实施例中,MET OPP48可提供附加的热绝缘,膜不透明性等。作为优选,层合构件由粘合剂或通过挤出来连结。
一种层合层实施例可为以下:大约48规格的PET/墨水/大约70规格的LDPE(或大约10磅)/大约70规格的MET OPP。LDPE为低密度聚乙烯。其它层合膜和标签组分在这些实施例的范围内是可能的,只要包装和标签完整性可在重复使用之后得到保持。例如,PET、LDPE和MET OPP成分可分别在大约5至500的规格的范围内。另外,PET、PE、BOPP(双轴向定向聚丙烯)和MET OPP的多种变型也可在本文提供的构造中构想出。
在备选实施例中,膜构造可包括大约48至230规格(优选为大约118规格)的OPP透光膜的印刷的外包装膜,其背面印刷,且粘性地连结到大约48至230规格(优选为大约118规格)的白色OPP包装膜上。
在另一个途径中,如图43中所示,膜22i可具有6层。在此途径中,标签24i由PSA 32i连结到聚酯层90上。聚酯层90可印刷在任一侧上,且包括透光的聚酯、OPP或甚至双轴向定向的尼龙。如该途径中所示,层90构造成定向至形成的包装的外侧/外部。层90可在大约18至120的规格的范围中,但优选为在大约20至50的规格的范围内。墨水层且甚至白色LDPE可应用于定向至包装内部的表面上的层90上。
可选的粘合层92可在聚酯层90的下方,以连结可选的加强层91,如纤维基底(例如,纸或甚至纸板层)。加强层91可为大约18至80克每平方米(gsm)的范围内的纸,但优选为在大约35gsm至大约45gsm的范围内,且最优选为大约40gsm。粘合层92可可选为挤出物或烯烃等。第二粘合剂层92可设置在聚酯层90(或可选的加强层91)下方,或在使用挤压层合的实施例中甚至为聚烯烃。在此途径中,第二粘合层92将层90(或91)连结到阻隔层93上。阻隔层93可为在大约12至40规格的范围内的箔,但优选为大约29规格。阻隔层93还可为金属化的定向聚丙烯(MET OPP)层。密封剂层94可施加在箔层93下方,其可包括聚烯烃。密封剂层94允许连结相对的膜层,以例如形成包装的端部封口和侧部封口。
图44示出了如22ii指出的另一个膜基底层合途径。在此途径中,标签24i由PSA32i连结到释放层89上。释放层89连结到纸层91上。释放层89可为硅树脂顶部涂层或清漆涂层,如,用于覆盖表面印刷物。在使用硅树脂的实施例中,层89的厚度可在大约20至大约50的规格的范围内。在使用清漆的情况下,如,印刷清漆,层89厚度可在大约1规格至大约15规格的范围内。释放层89便于在多次使用时将PSA从包装表面顺利地释放。纸91可通过粘合层92连结到阻隔层93上。朝包装内部指向膜表面的密封剂层94可连结到阻隔层93的另一侧上来作为共同挤出的层或作为挤出层。在此途径中,层合层的范围可与图43中所述的那些相当。
本实施例还可提供膜基底中的弱化线,以限定设置在标签24下方的包装翻片(例如,图9-27)或包装开口(例如,图15、图49-53)。还可包括包装完整性特征(例如,图11、图17、图21、图24-27)。作为优选,划线38仅穿过膜的一部分,以免影响包装的期望阻隔性能(例如,气体或水分)。因此,标签24将不需要提供初始气密性阻隔,但可选其可提供。例如,对于图15的开口,标签可提供初始阻隔。标签24的可选的阻隔性能可由标签材料的固有特性引起,或通过将阻隔层添加至标签24而引起。要注意的是,尽管在划线38可影响膜22的阻隔质量的实施例中,标签24的应用可补偿由划线产生的受损的阻隔。
对膜划线不限于材料或成分的规格。因此,所得的产品是成本效益合算的。又要注意的是,如本文中使用的用语'划线'可用于描述任何类型的处理的效果,如,将通过提供弱化线来使膜基底的完整性受损的机械、激光或其它处理。划线38可切穿膜22的外表面或内表面,但优选为在内表面上。还要注意的是,划线不必为连续的来形成弱化线。在一些实施例中,一系列各种尺寸的穿孔可划线到膜22中。
划线38的优选撕开强度应当至少弱于标签24的PSA32(图1和图5)的粘合强度,以允许膜22与标签(图1)剥离。仅出于示范的目的,在一个实施例中,PSA32可构造成具有大约300至400克/平方英寸的开启(分离)力和大约200至300克/平方英寸的闭合(粘合)力。但要注意的是,对于这些实施例可构想出其它开启力和闭合力范围。
划线38可如图1至图4中所示那样为弓形的,但可在许多实施例中取决于预期的产品和在打开包装时期望露出多少产品来构造。例如,图9-27示出了若干不同的划线38构造。图9示出了具有向外定向的J形钩构造的弓形划线。图10示出了具有'笑脸形'的弓形划线。图11示出了具有弓形外的包装完整性特征(PIF)的弓形划线。图12示出了具有圆角的梯形划线。图13示出了具有圆角的盒形划线。图14示出了具有圆形边缘划线的备选的普通弓形。图15示出了分开膜的备选的大体上直线的切割划线。在此情况下,划线可定位在顶部折线处或附近,且因此在该实施例中,包装周缘未密封。该切口不限于在封口的范围内,而是可穿过包装的整个边缘,且可被划线来在开启之前分开膜。此类构造可用于产品容纳。许多其它类型的构造也是可能的。图16示出了具有偏移的远侧凸片端部的带直线侧的宽弓形划线。 图17示出了具有一对凹痕PIF的弓形划线。图18示出了具有向内定向的'J形'钩的弓形划线。图19示出了V形划线。图20示出了弓形和穿孔划线构造。图21示出了具有弓形内的成对PIF的弓形划线。图22示出了具有向内定向的'J形'钩的'深'弓形划线。图23示出了备选的大体上'V'形划线构造。图24示出了具有弓形内的备选PIF的备选弓形划线。图25示出了具有弓形内的备选成对PIF的备选弓形划线。图26示出了具有弓形划线构造内的备选PIF的备选弓形划线,该构造具有撕开传播限制物75。以及,图27示出了具有弓形划线构造内的备选的成对PIF的备选弓形划线,该构造具有撕开传播限制物75。
上文所述的一些实施例试图解决露出的划线趋于使持续撕开传播超过划线的端部的趋势。图9具有向远侧延伸的'J形钩'56,而图18和图22具有沿中间延伸的'J形钩'56来停止撕开传播。作为备选,图10具有'笑脸形'58,以提供撕开传播中的这种减小。
一些实施例具有包装完整性特征(PIF)。例如,图11提供了弓形外的凸片或两个凸片,其形成划线中的中断。凸片在包装的初次开启时被切断,且在包装再闭合时将不会覆盖其。图21中的备选PIF构造70方向从弓形向内。图24-27中示出了第二备选PIF74。这些可形成为具有附加特征,如端部上的'T形钩'或'J形钩',以停止或减少撕开传播。图17中示出了又一个PIF构造。该PIF包括在密封区域中的膜中划线的一对点/凹痕。点72在包装的初次开启时从其原始位置除去。在再闭合时,点将不会完美地对准到其原始位置,且因此指出了包装之前被开启过。
所示的实施例提供了由PSA32(图5)层合到膜22上的标签基底24(连续的或分离的)。 如本文所述的标签可包括可施加到包装膜上来用作可再闭合的翻片的任何膜或层合构造。如图1-3中所示,标签24具有可剥离的粘合部分32和用作凸片的非粘合区36。标签24优选为构造成用以至少覆盖划线38。剥离凸片36可通过除去、覆盖(见图1)或使PSA32减弱/减活化来形成。例如,涂布工艺(如,利用墨水或清漆)可用于减弱标签24的区域36的粘合剂。作为备选,可增加单独的层合层,如,纸内衬,以提供标签24的非粘合部分36。在另一些备选实施例中,标签的非粘合边缘可为折叠到其自身上的标签的一部分,以便PSA表面邻近彼此(见图34)。在另一个途径中,标签可为涂布有PSA的区,其排除了用作非粘合区域36的标签的部分。
标签24可为透明的(如图所示)、不透明的或可选为印刷的。在优选实施例中,施加的标签24可为沿纵向连续地施加到流动膜上的无内衬标签。因此,可除去标签内衬废料,且由于标签为连续的,且不需要标签在产品的各个单元上精确套准的步骤。但要注意的是,标签24可大体上描述为具有粘合剂覆盖物的任何膜,且在本实施例的范围内。还要注意的是,具有内衬的标签还可在本实施例的范围内使用。
无内衬标签可为标签24的面材,具有在一侧上的PSA涂层,但可轧入没有内衬的卷筒中。这可通过释放施加到与粘合涂层相对的侧部上的涂层来实现。面材可包括标准的纸、膜、塑料、织物、箔、直接的热等。无内衬标签可与可除去的且可再定位的粘合剂使用。作为备选,粘合剂覆盖的柔性膜可用于标签24。
如图所示,标签24可利用PSA施加到膜22上来作为连续的标签。但要注意的是,在备选实施例中,标签可为分离地施加的标签,通过顶部切割连续施加的层来形成的分离的标签,或提供为层合膜的填隙层。
在本实施例中,标签24可通过PSA32层合到膜22上。如上文所述,包装20的表面与标签24之间的剥离强度应当大于沿划线38分开膜所需的力。因此,标签24相对于包装20的表面可剥离,包括露出到侧部封口26(见下文)的密封过程的标签24的部分。
本文所述的用于包装构造的示例性标签实施例可为大约50至500的规格,且优选为大约100至250的规格的聚酯或定向聚丙烯(OPP)。还可使用其它类型的半刚性聚合物,如PET。OPP实施例可包括双轴向定向聚丙烯(BOPP)。标签可为不透明的,但优选为透光的。特定的实施例可为具有大约10至200PSA涂层(且优选为大约100规格(1mil))的大约200规格(2mil)的BOPP透光膜,其可可选为由大约100规格(1mil)的聚酯内衬(大于18规格)覆盖来用于运输。可选的内衬可在施加到包装膜上之前除去。内衬还可用作减弱剂来用于无粘合剂区。
如果期望产生非可剥离的封口的热阻,则PET可为有利的。作为优选,PSA直接地施加到膜上,但也可施加到墨水或膜上的任何其它涂层上。PSA应当保持附接到标签24上,即使在重复开启和再闭合之后。PSA32优选为对产品是中性的或非反应性的,且可构造成甚至在制冷情况中也提供可再闭合的密封(即,PSA可在大约-10摄氏度至90摄氏度的温度范围中操作)。标签24可应用于覆盖划线38,同时留下标签24的足够裕度的区来露出足够的PSA36以大致再闭合由划线38(例如,见图1)限定的包装开口。
图28、图37-38、图42、图46-47、图54-55示出了标签被顶部切割来形成各种凸片形状或甚至形成分离的标签的实施例。例如,图28示出了一种途径,其中包装实施例的标签卷的区段具有划线形状的标签边缘80。如图所示,划线提供'正弦波'形状的标签边缘/凸片,但应理解的是,许多类型的定形标签边缘是可能的。此外,划线过程甚至可蚀刻标记,如,文字(例如,'此处拉起')。区域82示出了超过划线的标签基体,其可在将标签卷施加到层合膜(见图33且本文所述)之前除去。还要注意的是,区域36i示出了标签非粘合部分。还要注意的是,划线装置322还可使标签划线,以在一旦基体除去的情况下示出其类似于膜上的分离的标签。
针对标签的另一个途径示为图43和图44中的标签24i。 在该途径中,标签24i可应用为连续的标签,且然后顶部切割,其中标签基体的一部分被除去以向完整的包装给予分离的标签。如图43和图44中所示,标签24i可由粘合剂32i固定到膜22i/22ii上。粘合剂32i可在大约20规格至大约200规格的厚度的范围内,优选为在大约70规格至90规格的范围内,且最优选为大约80规格。粘合剂32i可具有在大约100至1,000克/24.4平方mm的范围内的剥离力。标签24i可在大约50规格至300规格的范围内的厚度内,优选为在大约160规格至大约240规格的范围内。标签24i可由定向聚酯、定向尼龙或甚至纸形成。
在本实施例的组装期间,标签24(闭合层)可层合到膜22上。端部封口28和侧部封口26可形成为由加热的轮或密封爪连结和密封的两个膜22。如上文所述,密封剂层可施加到膜上来便于期望的封口类型。该内部粘合剂可施加至高达百分之100的内表面,或仅施加到需要提供封口的位置。本实施例的确需要附加的包装翅形封口或搭接封口。
用以组装本实施例的包装20的方法可使用热封、冷封、挤出和粘合层合,或共同挤出。标签可沿流动膜的纵向长度连续地施加。当产品被封装和密封在流动膜内时,流动膜/标签层合层可切割成独立的包装。
一个示例性的制作一个包装实施例的'在线'方法大体上在图6中以68示出,该方法使用包装设备,包装设备将膜定位在产品上方,然后向下包裹膜来形成折线34。端部封口28形成在产品30下方。
如图所示,膜22和标签24(对于该图示是透明的)从其在62处的相应进给辊连结。但要注意的是,标签可预先施加到待处理为单个进给卷的膜上。膜/标签层合层可看起来像图4中所示的进给坯料40。在此途径中,坯料为单个在线进给坯料,但也可形成双在线坯料(例如,见图37-42)。图4示出了前面板64和后面板66的区域、折线34、切割线42和密封区域28和26。另外,如图所示,标签24定向为提供前面板和后面板上的标签的大致相等的部分。另外,标签24的粘合部分32定向为覆盖划线38,且在开启之后提供足够的露出的粘合剂来再闭合(或甚至再密封)包装。因此,延伸超过折线至后面板的标签的部分可变化,或甚至在折线处停止。
在膜/标签层合之后,膜12可在方向朝包装的内部的膜表面上的50处划线,但顶部表面也可被划线。作为优选,划线在施加连续的标签之后发生,但可在层合或甚至提供到进给卷之前施加。如上文所述,划线38可由激光、机械措施如刀等形成。
一旦划线,则膜围绕产品折叠,且边缘在折叠装置78处密封。如图7中所示,首先形成端部封口。但要注意的是,在备选实施例中,侧部封口26可首先形成,且产品在闭合端部封口28之前插入。密封剂层可通过轮压在一起来加热和压缩,这活化了内层上的热密封剂层。在EVA等用于密封剂层的情况下,加热的轮可加热至大约85摄氏度至205摄氏度之间。另外,线速度和膜厚度也是封口形成的因素,这是其期望的剥离能力和气密能力。如图1-3中所示,端部封口28定向至包装20的底部。
如图6中的图示中所示,一旦膜已经封装产品30,则侧部封口26可由相邻的上密封爪和下密封爪54形成,其不但可热封包装的侧部26,而且还可切割侧部封口之间的膜来分开包装。密封爪54中的切刀可完全地分开独立的包装(见图8),或备选地部分地切割或使包装之间的切口穿孔,以将它们成组地保持在一起(例如,弹药带包装)。要注意的是,图8中的密封爪54将在组装期间接触彼此,但示为延伸出一点来易于理解该实施例。作为备选,膜22可为预先穿孔的,且指引为对应于中间封口26。封口26和28可选为由压印在加热轮52或密封爪54上的图案形成,这可在拉动膜穿过制造过程时对膜压花。要注意的是,侧部封口26将向膜22的内表面提供密封,但将不会与标签24的PSA反应。这允许标签24甚至在经历密封爪54之后剥离。
形成双路线包装划线膜/标签层合层的示例性的脱机层合过程在图33中示出,且大体上以300指出,且可构造成用于生产如图45中所示的那样的包装。如图所示,具有内衬312的标签卷可使标签24与来自于辊314处的卷316的可选的减弱标签27层合。在标签内衬33存在的情况下,其可从卷312剥离,然后在310处卷起。将注意的是,该特征将不会存在于使用无内衬标签的位置。接下来,标签(单个标签或多个标签层合层)在轧辊320处层合至膜卷318。
此外,标签可可选为被划线或切割。这种标签切割可完全地或几乎完全地延伸穿过标签的厚度。图33示出了此类标签切口可在标签施加到卷筒膜上之后形成,使得标签'顶部切割'或从标签侧部远离膜来切割。标签切口或'顶部切割'可用于在可选的第一划线装置322(例如,见图37和图28中的划线80)形成定形的凸片或翻片构造。通过装置322的标签的这种顶部切割可使标签定形为连续的标签,其从包装的一个边缘延伸至包装(例如,图28和图37)的另一个相对的边缘,或作为分离的标签,其延伸小于包装的宽度或长度,且在包装的相对边缘之间延伸(例如,图38和图46-47)。不形成包装标签的连续地施加的标签的部分为未使用的标签基体35,且可在轧辊321处剥离层合层,且通过送出辊323卷到标签基体卷绕部324上。具有定形的且排列好的凸片的合成层合膜22如果存在则可接下来在划线装置326处被划线('底部切割')。膜/标签层合层然后可形成卷328。要注意的是,底部切割划线装置还可定位在轧辊320和321之间。
拉片或无粘性抓持部分可以以许多附加方式形成。例如,替代第二减弱标签27、涂层或其它粘合减弱器件,如墨水涂层或热失活,可应用于通过粘合剂失活装置330来选择标签的粘合剂侧的区域。此外,此类粘合剂失活可以以图案施加途径来完成,且实际上,粘合剂施加也可为图案施加。粘合剂失活过程还可包括粘合剂涂层施加器338,其可在轧辊320处层合到膜22上之前定位在沿线的任何位置。粘合剂涂层施加器338可沿加工方向或甚至施加的区施加粘合剂,如,沿横向方向。在粘合剂的区施加的情况下,可消除粘合剂涂布步骤,因为粘合剂将仅按构造来施加。因此,如果标签24上的粘合剂为图案施加的以便具有没有粘合剂的部分,则减弱标签27或粘合剂减弱装置330将都不需要。
在另一个途径中,可从可展开站点336拉动膜卷318。从展开站点336进给的材料可可选为包括在膜318的顶部表面上的膜印刷,且甚至在膜底部表面上的背面印刷。印刷可通过弹性印刷、平版印刷术和轮转凹版印刷。展开站点336可包括膜层合、粘合剂施加、挤出、热层合等。来自于卷318的膜/卷筒结构可包括单个到多个的膜层。
在另一个途径中,图33中所示的膜/标签层合装置还可包括用于印刷从展开站点336进给的膜的印刷机332。印刷可包括弹性印刷、平版印刷和轮转凹版印刷中的表面印刷,且可用作用以将粘合表面涂布到来自于膜卷318的膜上的装置。
在又一个途径中,可添加切开站点334来减少标签堆叠面或将标签切割成多个路线。
因此,存在许多潜在的途径,其可体现为'脱机的'(例如,图33)或'在线的'(例如,图6和图45),以组装和构造膜/标签坯料层合层,用于在形成柔性包装中使用。图37-42提供了仅一些示例性途径。
例如,图37示出了在组装大体上以100指出的示例性可再闭合的柔性膜包装之前的膜/标签层合层区段的平面视图。在此途径中,膜可形成双路线在线包装,其最终在组装期间在沿纵向方向在切割线76处切割,以及沿横向方向在切割线42处切割。这里,区域产品放置区以31示出。在该实施例中,顶部切口60形成弓形剥离凸片,其延伸超过折线34,但标签24在纵向方向上仍是连续的。非粘合区域36可由第二标签27或如本文所述的其它器件形成。
图38示出了在组装示例性可再闭合的柔性膜包装之前且大体上以102指出的膜/标签层合层的另一个途径的区段的平面视图。在该途径中,顶部切口60使剥离凸片弓形延伸至标签边缘39。一旦标签基体35除去,则其余的标签形成分离的标签25。
图39示出了根据本实施例的一个途径的在示例性可再闭合的柔性膜包装组装好之前的膜22的区段的平面视图。在此途径中,底部膜切割划线(弱化线)38包括PIF74的特征。
图40示出了在标签的顶部切割和膜的划线(底部切割)之前以及在示例性可再闭合的柔性膜包装的组装之前膜/标签层合层的区段的平面视图。如图所示,第二标签27在膜22与标签24之间层合。图41示出了在标签已经在66处顶部切割且膜在38处划线之后图40中的层合层,但示出了第二标签27的定向。
图42示出了在组装示例性可再闭合的柔性膜包装之前且大体上以104指出的膜/标签层合层的另一个途径的区段的平面视图。在此途径中,顶部切口60形成具有用于前面板64的弓形剥离凸片的分离标签25i和在折线34上延伸至后表面66(见图46和图47)的凸片29。因此,膜/标签层合层(例如,凸片29)的仅一部分在折线34处折叠。这可允许包装较容易的折叠。如图所示,标签25i具有大体上平行折线34延伸的边缘部分41。标签25i的边缘部分41可在折线34处或附近,但优选为在尺寸37上远离折线大约1至2mm。
图45示出了组装使用膜/标签层合层104的包装20的另一个示例性'在线'包装设备69的简图。在此途径中,包装设备69将膜104定位在产品30的双线上方,然后向下包裹膜且利用折叠装置78i封装产品30,直到膜34的纵向边缘在切割线76处或附近接触。装置55可由两个相邻的上密封轮和下密封轮86形成双端部封口28,且利用刀85来沿切割线76切割膜。也见图48。刀85可完全地分开包装的两条线,或作为备选,部分地切割或使包装之间的切口穿孔以将它们保持在一起。要注意的是,图45和图48中的密封爪86和刀85将在组装期间接触彼此,但示为延伸出一点以易于理解本实施例。同样,在装置54处,侧部封口26可形成,且独立的包装20被切割,如,上文在图6至图8中所述。要注意的是,步骤的顺序可为灵活的,其中装置54还可置于装置55的上游。
因此,在图1至图3的实施例的构造的使用中,使用者可用一只手抓持住标签24的未密封的内表面36,且将标签拉离包装以露出包装内部。通常,沿包装的折叠顶部边缘的方向来拉动标签。当标签剥离凸片36被向上剥离时,膜沿划线38裂开/分开,以形成包装开口且露出PSA32。如图1中所示,超过标签拉动方向的膜22仍附接到标签上。作为优选,标签24在使用中未被拉离包装20。
尽管已经详细描述了优选实施例,但变型和改型可在本文所述的构造内实现。
Claims (48)
1.一种可再闭合的柔性膜包装,包括:
柔性膜,其具有形成折叠边缘的折叠部、至少两个相对的自由边缘,以及至少前面板和后面板,所述相对的自由边缘密封在一起,以形成至少一个密封边缘,使得前面板和后面板限定内部空间;
形成翻片的所述前面板的柔性膜中的划线,其在朝所述折叠边缘移动时限定开口,且具有所述翻片与所述膜的分离力;以及
从所述至少两个相对的自由边缘的边缘到边缘不间断延伸的标签,其由压敏粘合剂附接到所述膜上,且延伸超过所述前面板上的划线以再密封由所述翻片限定的所述包装开口,所述压敏粘合剂具有所述膜与所述标签之间的剥离强度,所述剥离强度大于沿所述划线的分离力,且所述标签还具有限定拉片的无粘性部分。
2.根据权利要求1所述的包装,其特征在于,所述标签延伸超过所述折叠边缘至所述后面板。
3.根据权利要求1或权利要求2所述的包装,其特征在于,所述划线为弓形的。
4.根据前述权利要求中任一项所述的包装,其特征在于,所述划线端部终止于选自'J形钩'和'笑脸形'构成的清单的撕开传播减少图案。
5.根据前述权利要求中任一项所述的包装,其特征在于,所述标签在所述前面板和所述后面板上从所述折叠边缘等距延伸。
6.根据前述权利要求中任一项所述的包装,其特征在于,所述划线为穿孔。
7.根据前述权利要求中任一项所述的包装,其特征在于,所述膜为印刷的外包装层合膜,所述印刷的外包装层合膜包括连结到白色OPP包装膜上的背面印刷的OPP透光膜。
8.根据权利要求7所述的包装,其特征在于,所述OPP透光膜为大约90至230的范围内的规格,以及所述白色OPP包装膜为大约90至230的范围内的规格。
9.根据权利要求7所述的包装,其特征在于,所述OPP透光膜为大约118的规格,以及所述白色OPP包装膜为大约118的规格。
10.根据前述权利要求中任一项所述的包装,其特征在于,所述标签为在大约160至240的范围内的规格的BOPP透光膜。
11.根据前述权利要求中任一项所述的包装,其特征在于,所述柔性膜为大约200的规格的BOPP透光膜。
12.根据前述权利要求中任一项所述的包装,其特征在于,所述标签的非粘合边缘为折叠到其自身上的标签的一部分,以便PSA表面邻近彼此。
13.一种可再闭合的包装,包括:
第一基底,其形成多个面板,所述面板具有密封来形成用于收纳物件的内腔的周缘;
由至少第一面板中的弱化线限定的翻片,其在所述第一面板在弱化线处分开时限定至所述内腔的开口;
第二基底,其附连到所述第一基底上,且具有延伸超过所述弱化线来形成包装再密封区的第一部分,以及从所述第一面板的一部分延伸至所述第二面板的一部分的第二部分,且其中所述第二基底从一个周缘不间断地延伸至相对的周缘。
14.根据权利要求13所述的包装,其特征在于,所述弱化线为穿孔。
15.根据权利要求13或权利要求14所述的包装,其特征在于,所述第一基底为印刷的外包装层合膜,所述印刷的外包装层合膜包括连结到白色OPP包装膜上的背面印刷的定向聚丙烯(OPP)透光膜。
16.根据权利要求15所述的包装,其特征在于,所述OPP透光膜为大约48至230的范围内的规格,以及所述白色OPP包装膜为大约48至230的范围内的规格。
17.根据权利要求15所述的包装,其特征在于,所述OPP透光膜为大约118的规格,以及所述白色OPP包装膜为大约118的规格。
18.根据权利要求13至权利要求17中任一项所述的包装,其特征在于,所述第二基底为在大约160至240的范围内的规格的BOPP透光膜。
19.根据权利要求13至权利要求18中任一项所述的包装,其特征在于,所述第一基底为大约200的规格的BOPP透光膜。
20.根据权利要求13所述的包装,其特征在于,所述标签的非粘合边缘为折叠到其自身上的所述第二基底的一部分,以便PSA表面邻近彼此。
21.一种用于形成可闭合的柔性包装的层合层,包括:
具有纵轴线的柔性膜的连续卷筒;
利用压敏粘合剂沿所述纵轴线施加到所述柔性膜上的连续标签;以及
所述卷筒和标签形成类似的包装形成坯料的连续系列,各个坯料的所述柔性膜具有弱化线,所述弱化线沿所述标签形成所述膜中的翻片以限定开口。
22.根据权利要求21所述的层合层,其特征在于,所述划线在所述纵向方向上沿所述卷筒为连续的。
23.根据权利要求21所述的层合层,其特征在于,所述划线为弓形的。
24.根据权利要求21所述的层合层,其特征在于,所述划线为正弦形的。
25.根据权利要求21至权利要求24中任一项所述的层合层,其特征在于,所述标签的一部分为无粘性的以限定拉片。
26.一种可再闭合的包装,包括:
多层层合膜,所述层合膜至少具有密封剂层、阻隔层、粘合层和加强层;
形成在所述多层层合膜中的弱化线,所述弱化线至少部分地限定包装开口;以及
利用粘合剂附接到所述多层粘合膜上且在所述弱化线上延伸的闭合层。
27.根据权利要求26所述的可再闭合的包装,其特征在于,所述层合膜还包括聚酯层和附加的粘合层。
28.根据权利要求26或权利要求27所述的可再闭合的包装,其特征在于,所述层合膜还包括释放层。
29.根据权利要求26至权利要求28中任一项所述的可再闭合的包装,其特征在于,所述加强层包括纤维基底。
30.一种用于形成可再闭合的柔性包装层合层的方法,包括以下步骤:
提供具有纵轴线的柔性膜的连续卷筒;
利用压敏粘合剂(PSA)沿所述纵轴线将连续标签施加到所述柔性膜上;以及
在所述卷筒上划线来形成类似的包装形成坯料的连续系列且沿所述标签形成所述膜中的翻片以限定开口。
31.根据权利要求30所述的方法,其特征在于,所述方法还包括在将所述连续标签施加至所述柔性膜上的步骤之前将减弱标签施加到所述PSA上以形成拉片的步骤。
32.根据权利要求30或权利要求31所述的方法,其特征在于,所述方法还包括在将所述连续标签施加到所述柔性膜上的步骤之前从所述标签除去内衬来露出所述PSA的步骤。
33.根据权利要求30至权利要求32中任一项所述的方法,其特征在于,所述方法还包括以下步骤:在将连续标签施加到所述柔性膜上的步骤之后使所述标签划线;以及除去所述标签划线基体。
34.根据权利要求30至权利要求33中任一项所述的方法,其特征在于,所述方法还包括以下步骤:
在产品上折叠所述卷筒以产生折叠边缘;以及
在与所述卷筒的自由边缘相对的所述折叠边缘上形成封口以形成前面板和后面板来限定内部空间以容纳产品。
35.根据权利要求34所述的方法,其特征在于,所述方法还包括切割封口以限定独立包装的步骤。
36.一种用以形成可再闭合的柔性膜包装的设备,包括:
层合辊,其用以利用压敏粘合剂(PSA)沿所述纵轴线将具有纵轴线的柔性膜的连续卷筒层合到连续标签上;
第一装置,其用以在将所述柔性膜层合至所述标签之后产生形成在所述卷筒中的弱化线,形成类似包装形成坯料的连续系列,以及沿所述标签在所述膜中形成翻片以限定开口;
折叠装置,其用以在产品上产生折叠边缘;以及
密封装置,其用以在所述卷筒折叠边缘的相对自由边缘上形成封口,以形成前面板和后面板来限定内部空间以容纳产品。
37.根据权利要求36所述的设备,其特征在于,所述设备还包括在层合至所述卷筒上之后使所述标签划线的第二划线装置。
38.根据权利要求36或权利要求37所述的设备,其特征在于,所述设备还包括用以切割封口来形成独立包装的切割装置。
39.一种由工艺形成的包装,包括:
提供卷筒膜;
利用粘合剂将卷筒标签连续地施加至所述卷筒膜上;
切割所述卷筒标签来形成标签;
将未形成所述标签的所述卷筒标签从所述卷筒膜除去;以及
在对应于所述标签的所述卷筒膜中形成弱化线来限定包装开口。
40.根据权利要求39所述的包装,其特征在于,所述包装还包括将具有所述标签的所述卷筒膜分成包装坯料。
41.根据权利要求39或权利要求40所述的包装,其特征在于,所述包装还包括围绕食品包裹具有所述标签的所述卷筒膜和形成独立的柔性膜包装。
42.根据权利要求41所述的包装,其特征在于,所述包装还包括使所述膜包装与彼此分开。
43.根据权利要求39至权利要求42中任一项所述的包装,其特征在于,所述包装分别具有包括拉片的第一部分,所述第一部分朝所述拉片设置成超过所述弱化线。
44.根据权利要求43所述的包装,其特征在于,所述定形的包装标签的第一部分还包括具有压敏粘合剂的再密封部分。
45.根据权利要求43所述的包装,其特征在于,所述标签还包括远离所述拉片设置成超过所述弱化线的第二部分。
46.根据权利要求45所述的包装,其特征在于,所述标签的第二部分包括一对凸片。
47.根据权利要求46所述的包装,其特征在于,所述包装还包括围绕食品折叠所述卷筒膜,其中所述包装包括包装折叠部,且所述标签的第二部分的成对凸片围绕所述包装折叠部延伸。
48.一种形成一系列可再闭合的膜包装的方法:
提供卷筒膜;
利用粘合剂将卷筒标签连续地施加至所述柔性卷筒膜;
切割所述卷筒标签来形成包装标签;
除去未形成所述标签的所述卷筒标签;以及
在对应于所述标签的所述卷筒膜中形成弱化线来限定包装开口。
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- 2012-03-16 CA CA2830264A patent/CA2830264A1/en not_active Abandoned
- 2012-03-16 EP EP16180214.5A patent/EP3109172B1/en not_active Not-in-force
- 2012-03-16 WO PCT/US2012/029486 patent/WO2012125945A1/en active Application Filing
- 2012-03-16 AU AU2012228962A patent/AU2012228962A1/en not_active Abandoned
- 2012-03-16 MX MX2013010605A patent/MX2013010605A/es unknown
- 2012-03-16 BR BR112013023727-9A patent/BR112013023727B1/pt not_active IP Right Cessation
- 2012-03-16 PL PL15169946T patent/PL2942290T3/pl unknown
- 2012-03-16 CN CN201280023402.2A patent/CN103517855B/zh not_active Expired - Fee Related
- 2012-03-16 JP JP2013558216A patent/JP6133793B2/ja not_active Expired - Fee Related
- 2012-03-16 ES ES15169946.9T patent/ES2606328T3/es active Active
- 2012-03-16 EP EP12713461.7A patent/EP2686251B1/en not_active Not-in-force
- 2012-03-16 ES ES16180214.5T patent/ES2693145T3/es active Active
- 2012-03-16 ES ES12713461.7T patent/ES2546501T3/es active Active
- 2012-03-16 PL PL16180214T patent/PL3109172T3/pl unknown
- 2012-03-16 PL PL12713461T patent/PL2686251T3/pl unknown
- 2012-03-16 EP EP18176144.6A patent/EP3398862A1/en not_active Withdrawn
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CN106999119A (zh) * | 2014-09-24 | 2017-08-01 | B.布劳恩梅尔松根股份公司 | 封装纸作为稳定化装置的使用 |
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CN107835743A (zh) * | 2015-05-11 | 2018-03-23 | 克里奥瓦克公司 | 具有容易打开/可再闭合的底部幅材的真空贴体包装 |
AU2016262409B2 (en) * | 2015-05-11 | 2020-03-19 | Cryovac, Llc | Vacuum skin package with easy-open/reclosable bottom web |
CN107835743B (zh) * | 2015-05-11 | 2020-05-26 | 克里奥瓦克公司 | 具有容易打开/可再闭合的底部幅材的真空贴体包装 |
CN113895786A (zh) * | 2016-09-01 | 2022-01-07 | 联邦快递公司 | 可再密封的包装清单袋 |
CN114131999A (zh) * | 2021-11-30 | 2022-03-04 | 江苏鑫城包装科技有限公司 | 一种酒盒包装用衬纸自动粘贴设备 |
CN114131999B (zh) * | 2021-11-30 | 2023-08-18 | 江苏鑫城包装科技有限公司 | 一种酒盒包装用衬纸自动粘贴设备 |
Also Published As
Publication number | Publication date |
---|---|
ES2546501T3 (es) | 2015-09-24 |
EP2942290A1 (en) | 2015-11-11 |
NZ615554A (en) | 2015-01-30 |
BR112013023727B1 (pt) | 2020-12-22 |
WO2012125945A1 (en) | 2012-09-20 |
ES2693145T3 (es) | 2018-12-07 |
JP2014511804A (ja) | 2014-05-19 |
EP2686251B1 (en) | 2015-06-03 |
US20170233158A1 (en) | 2017-08-17 |
AU2012228962A1 (en) | 2013-10-17 |
CA2830264A1 (en) | 2012-09-20 |
PL2686251T3 (pl) | 2015-10-30 |
EP2942290B1 (en) | 2016-09-14 |
PL2942290T3 (pl) | 2017-03-31 |
EP2686251A1 (en) | 2014-01-22 |
JP6133793B2 (ja) | 2017-05-24 |
US20140079343A1 (en) | 2014-03-20 |
ES2606328T3 (es) | 2017-03-23 |
MX2013010605A (es) | 2014-07-30 |
EP3109172A1 (en) | 2016-12-28 |
EP3109172B1 (en) | 2018-08-15 |
BR112013023727A2 (pt) | 2016-12-13 |
CN103517855B (zh) | 2016-03-16 |
US9688442B2 (en) | 2017-06-27 |
EP3398862A1 (en) | 2018-11-07 |
PL3109172T3 (pl) | 2019-03-29 |
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