CN111801210A - 带有氟化聚合物内表面的带盖容器及其制造方法 - Google Patents
带有氟化聚合物内表面的带盖容器及其制造方法 Download PDFInfo
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- CN111801210A CN111801210A CN201880080731.8A CN201880080731A CN111801210A CN 111801210 A CN111801210 A CN 111801210A CN 201880080731 A CN201880080731 A CN 201880080731A CN 111801210 A CN111801210 A CN 111801210A
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Abstract
公开了容器及其制造和使用方法。所述容器在所述储藏室内包括内部氟聚合物表面,所述内部氟聚合物表面任选地包含氟化乙烯丙烯(FEP)。例如,可以通过模内贴标签将这种氟聚合物表面结合到容器中。任选地,这些容器可用于储存通常粘性的***提取物。此类容器中坚固的氟聚合物表面的低表面能有助于防止粘性产品粘附到容器表面。
Description
技术领域
本公开涉及用于制造在容器的储藏室内提供不粘表面的容器的包装和方法。更具体地,本公开内容描述了在容器的储藏室内结合氟聚合物表面(例如,来自氟化乙烯丙烯)的包装以及克服与提供此类表面相关的挑战的方法。
背景技术
粘性或发粘的产品可能难以从包装中移除,因为此类产品可能倾向于粘附至包装的储藏室内的表面。为储藏室表面提供低表面能,例如等于或低于24达因/平方厘米,以减少或消除粘性产品对表面的粘附可能是有帮助的。然而,提供这样的表面存在挑战。
在美国的某些辖区内,为新生的合法***市场提供了塑料包装。一些***提取物可能是粘性的或发粘。例如,″碎片″和″蜡″是***提取物的类型,其稠度和粘性与蜜饯的苹果外观相似。将***碎片或其他提取物储存在具有直聚丙烯或聚乙烯储藏室表面的塑料包装中,将使产品很难从包装中提取。而且,如果成功地提取了这种产品,则很可能在包装的内部留下部分产品、残留物或其他标记。
氟化乙烯丙烯或FEP是具有非常低的表面能的聚合物,其具有优异的不粘或低粘特性。FEP以杜邦品牌TEFLON FEP闻名多年,例如用于炊具的不粘锅应用。FEP是在包装中储存粘性内容物(例如***碎片)的好选择。但是,传统的FEP材料不容易加入到刚性容器中。例如,一种这样的常规材料是FEP带,其包括FEP表面和粘合侧。然而,这种带没有被配置用于在线包装生产,并且将倾向于在聚合物包装的轮廓表面上起皱和/或不均匀地放置。
FEP具有最低的塑料表面能之一。这使其成为不粘层的理想选择。但是,出于同样的原因,如果不进行表面处理(例如,等离子或电晕处理),FEP也不容易与表面结合。即使经过处理,通常也需要层压或机械固定,这给以成本有效且物理坚固的方式将FEP结合到刚性包装中带来了额外的挑战。
因此,需要一种刚性包装,其将FEP或其他氟聚合物材料结合到轮廓表面上的内部储藏室中,以使FEP不会起皱,特别是在储藏室表面之间的交界处。还需要用于将FEP结合到储藏室表面上的方法,其提供坚固的FEP层以为不粘或低粘应用提供低表面能的储藏室表面。
发明概述
因此,一方面,提供了一种容器。该容器包括具有基部和从基部向上延伸到开口的侧壁的主体。基部和侧壁形成适于容纳产品的储藏室。储藏室有内表面。提供了盖,该盖任选地通过铰链连接到主体。盖构造成覆盖开口以封闭储藏室。盖具有至少一个内表面。一层氟化乙烯丙烯(FEP)覆盖整个每个内表面。容器优选地由刚性聚合物制成。
任选地,在任何实施方案中,FEP层被设置在储藏室的所有产品接触表面上。
任选地,在任何实施方案中,FEP层具有等于或低于24达因/平方厘米的表面能。
任选地,在任何实施方案中,该容器用于储存***提取物,任选地碎片或其他粘性物质。
在另一方面,提供了模内贴标签方法,用于将氟聚合物层施加到容器的内侧。该方法包括在模具内提供主体标签,该主体标签具有第一侧面和与第一侧面相对的第二侧面。第一侧面具有氟聚合物层的氟聚合物外表面。第二侧面具有聚合物层的聚合物粘合表面,该聚合物粘合表面适于在向聚合物粘合表面和/或聚合物衬底施加足够的热量然后冷却之后与相容的聚合物衬底接触并粘合。主体标签还包括在氟聚合物层和聚合物层之间的粘结层。模内贴标签方法还包括将熔融的热塑性树脂注入模具中以形成容器,该容器包括具有基部和从基部向上延伸至开口的侧壁的主体。基部和侧壁形成内部空间,该内部空间具有适于容纳产品的内部储存空间。储存空间具有至少一个内表面。该方法还包括在模具中将主体标签的粘合表面施加到至少一个内表面上的步骤。通过充分加热粘合表面和/或储存空间的至少一个内表面,然后进行冷却,使主体标签粘合到储存空间的至少一个内表面。冷却后,主体标签会永久粘合到储存空间的内表面,并且主体是实心的,并且是刚性的。
任选地,在任何实施方案中,容器还包括盖,该盖构造成当容器处于关闭位置时覆盖开口。任选地,在任何实施方案中,盖包括至少一个内表面,当容器处于关闭位置时,该内表面封闭储存空间以形成完全封装的储藏室。可以在模具或第二模具的内部提供盖标签(即,可以在与主体相同的模具中或替代地在不同的模具中制成盖,然后根据需要与主体组装在一起)。盖标签具有第一侧面和与第一侧面相对的第二侧面。第一侧面包括氟聚合物层的氟聚合物外表面。第二侧面包括聚合物层的聚合物粘合表面,该聚合物粘合表面适于在向聚合物粘合表面和/或聚合物衬底施加足够的热量然后冷却之后与相容的聚合物衬底接触并粘合。盖标签还包括在氟聚合物层和聚合物层之间的粘结层。在其中设有盖标签的模具或第二模具中,盖标签的粘合表面被施加到盖的至少一个内表面。通过充分加热粘合表面和/或盖空间的至少一个内表面,然后冷却,使盖标签粘合到盖的至少一个内表面。冷却后,盖标签永久粘合到盖的内表面,并且盖是实心的,并且任选地是刚性的。
在任何实施方案中,如果有盖,则该盖任选地通过铰链连接到主体。
任选地,在任何实施方案中,主体标签和/或盖标签的氟聚合物层包括氟化乙烯丙烯(FEP)。
任选地,在任何实施方案中,粘结层粘附于氟聚合物层和粘合层,有效地将它们连结以形成标签。
任选地,在任何实施方案中,粘结层包括双面涂覆的聚合物膜和合成橡胶基粘合剂。
任选地,在任何实施方案中,聚合物层包括与内表面的聚合物材料相容的聚合物材料,从而通过加热粘合表面和/或至少一个内表面而将标签粘合到内表面。
任选地,在任何实施方案中,主体标签被永久地粘合到储存空间的至少一个内表面和/或盖标签被永久地粘合到盖的至少一个内表面,而相应标签和相应表面之间没有粘合剂。
任选地,在任何实施方案中,将熔融的热塑性树脂注入模具中以形成容器的步骤是在将主体标签设置在模具内部的步骤之后执行的。
任选地,在任何实施方案中,主体标签和盖标签一起累计覆盖至少90%的内表面,任选地至少95%的内表面,任选地至少98%的内表面,任选地封装的储藏室的所有或基本上所有内表面。
任选地,在任何实施方案中,储存空间的至少一个内表面包括在接合点处相遇的第一内表面和第二内表面,其中,主体标签同时覆盖第一内表面和第二内表面内表面,使标签在接合点处不会起皱。
任选地,在任何实施方案中,主体标签和/或盖标签的氟聚合物层的厚度为0.5-5密耳,任选地为1-3密耳,任选地为1-2密耳。
任选地,根据本文公开的方法制造容器。任选地,当容器处于关闭位置时,主体标签和盖标签覆盖至少95%的储藏室,任选地至少98%的储藏室,任选地整个储藏室。任选地,盖的一部分(例如,裙部)啮合主体的部分(例如,侧壁)。这为储藏室提供了密封,从而使储藏室与周围环境基本隔离。任选地,密封使储藏室防潮。任选地,该容器可以用于储存***提取物。***提取物可能发粘,例如碎片或蜡。氟聚合物层的氟聚合物外表面的表面能为24达因/平方厘米或低于24达因/平方厘米,从而提供提取物不粘附于其的表面。容器也可以用于其他粘性产品,例如糖果。优选地,从储藏室中去除提取物或产品不会在氟聚合物层的氟聚合物外表面上留下残留物或其他标记。
附图说明
将结合以下附图描述本发明,其中相同的附图标记表示相同的元件,其中:
图1是根据所公开概念的方面的任选容器的等距视图,其中,容器处于关闭位置。
图2是处于打开位置的图1的容器的等距视图。
图3是图1的容器的剖视图。
图4是图3所示的容器的部分截面图的放大图,以示出粘合到其储藏室表面的氟聚合物标签。
图5是处于打开位置的容器的替代实施方案的等距视图。
图6是根据所公开概念的方面的氟聚合物标签的分离的示意性等距视图。
发明详述
在任何实施方案中,所公开的概念针对具有刚性储藏室表面的包装,其中所述表面包括氟聚合物层,例如,氟化乙烯丙烯(FEP)。任选地,FEP层被提供为层压板的组分,其可以例如通过模内贴标签工艺或压敏贴标签工艺施加到包装上。可替代地,将FEP层提供为包括聚合物基础层(例如,聚丙烯)和FEP的热成型复合材料。现在将更详细地讨论这些实施方案和相关工艺中的每一个。
容器和标签的示例性实施方案
在任何实施方案中,提供了一种容器。参考图1至图4,示出了根据所公开概念的可选方面可以使用的容器100的示例性实施方案。容器100优选地由诸如聚丙烯的刚性聚合物制成。
如图所示,容器100包括优选为刚性的主体102和优选的盖104,该盖任选地通过铰链106连接到主体102。如图2所示,主体102包括基部108和从基部108向上延伸至开口112的侧壁110盖。盖104构造成当容器100处于关闭位置时覆盖开口112。盖优选是刚性的,例如可以与主体相同的刚性聚合物材料。可替代地,盖是柔性的,例如围绕开口热密封的柔性聚合物膜或铝箔。
基部108和侧壁110形成并围绕内部空间114。内部空间114包括适于容纳产品的内部储存空间116。储存空间116具有至少一个内表面118。在图1-4所示的实施方案中,储存空间116具有在基部108上的第一内表面118a和在侧壁110上的第二内表面118b。侧壁110从基部108延伸并垂直于基部108。但是,应当理解,在一些实施方案中,侧壁未必一定垂直于基部,并且可以设想其他取向。
如图2和图3中所示,盖104包括至少一个内表面120,当容器100处于关闭位置时,该内表面120包围储存空间116以形成完全封装的储藏室122。这样,各个内表面118、120一起完全围绕储藏室122内的整个空间,并且因此也将完全围绕储藏在其中的任何产品。
参照图4,容器100还优选地包括粘合到储藏室122中相应的内表面118、120的氟聚合物标签124。为了使附图中的视觉清晰,标签124以夸大的厚度示意性地示出。如将要讨论的,这样的标签124可以被施加到主体102和盖104两者。标签124的组成和构造可以任选地(尽管不是必须)对于主体102和盖104都是相同的。本说明书分别讨论了盖标签和主体标签,其目的是描述各个标签相对于相应结构如何定向。在本说明书一般地讨论标签的范围内(不参考标签是盖或主体的一部分),可以假定(除非另有说明)说明适用于在盖和主体上均可使用的标签。
标签124任选地为约1至20密耳厚,任选地为2至15密耳厚,任选地为2至10密耳厚,任选地为3至8密耳厚,任选地为4至6密耳厚。标签124可以例如通过模内标签或压敏标签被施加到容器和/或盖上。这些工艺中的每一个通常在下面进行描述。然而,首先,现在描述氟聚合物(例如,FEP)标签124的结构。
图6示出了根据所公开概念的任选方面的氟聚合物标签124的分离的示意性等距视图。为了清楚地描绘各个层和表面的位置,夸大了厚度。标签124具有第一侧面126和与第一侧面126相对的第二侧面128。第一侧面126包括氟聚合物层132的氟聚合物外表面130。第二侧面128包括聚合物层136的聚合物粘合表面134,适于与储存空间116的内表面118或盖104的内表面120接触并结合。
氟聚合物层132优选包括FEP。氟聚合物层132任选地为大约0.5-10密耳厚,任选地为0.5-5密耳厚,任选地为1-3密耳厚,任选地为1-2密耳厚。1-2密耳的厚度可能是优选的,因为已经发现该厚度对于其预期目的是足够的。考虑到FEP和其他氟聚合物材料的成本,将氟聚合物层132的厚度增加到超过该厚度可以提供递减的回报。FEP作为低表面能层的效用通过其表面来提供。即,一旦FEP足够厚以提供坚固的表面(例如,至少1密耳),则额外的厚度可能不会以任何有意义的方式增强其不粘特性。FEP是一种相对昂贵的材料。因此,为了提供坚固的标签,优选的是聚合物粘结层提供所需的厚度,因为诸如聚丙烯的聚合物比FEP便宜得多。
尽管FEP是用于与所公开的概念一起使用的优选的不粘(低表面能)材料,但是可以根据所公开的概念的方面来使用其他材料。例如,可以使用包括不同氟聚合物层的标签。这些可以包括乙烯四氟乙烯(ETFE)、聚四氟乙烯(PTFE)、聚氯三氟乙烯(PCTFE)和全氟烷氧基(PFA)等。可替代地,可以使用不是氟聚合物但具有不粘表面的层,即具有非常低的表面能的层。这样的非氟聚合物材料包括但不限于硅树脂或溴化铝镁。任选地,根据所公开概念的不粘层,无论是否为氟聚合物,都具有等于或小于24达因/平方厘米的表面能。
标签124还优选地在氟聚合物层132和聚合物层136之间包括粘结层138。粘结层138粘附到氟聚合物层132和聚合物层136上,从而有效地将它们连结在一起以形成标签124。粘结层138本身可以包括一个或多个有限层,但仍称为单数形式的″层″。例如,粘结层138可包括双面涂覆的聚合物膜和在其一侧或两侧上的合成橡胶基粘合剂。在一个特定实施例中,粘结层可以包括双面涂覆的0.5密耳的透明聚酯膜和1.8-2密耳的合成橡胶基粘合剂。可以想到粘结层138的替代厚度。
聚合物层136的厚度任选地为大约1-10密耳,任选地为1-5密耳,任选地为1-2密耳,但是如果需要的话可以大于10密耳。聚合物层136的粘合表面134适于与储藏室122的相应内表面118、120接触并结合。聚合物层136包括与其适合于与之粘合作的相应内表面118、120(聚合物衬底)的聚合物材料相容的聚合物材料。例如,如果内表面118、120包括聚丙烯,则聚合物层136也包括聚丙烯。或者,如果内表面118、120包括聚乙烯,则聚合物层136也包括聚乙烯。在一个任选的实施方案中,内表面118、120包括聚丙烯,并且聚合物层是双轴取向的聚丙烯(″BOPP″)膜层,其任选地为1-2密耳厚。BOPP被构造成与聚丙烯内表面相容,以便当将标签124施加到内表面118、120时容易地促进氟聚合物标签124和内表面118、120之间的热粘合。通常,在前述实施方案中的BOPP层可以被称为″粘合层″,因为当表面和/或层被充分加热然后冷却时,BOPP层接触并粘合到容器表面。替代地,其他双轴取向的聚合物可以用于聚合物层136。
主体102(和储存空间116)的基部108和侧壁110任选地分别提供在接合点144处相遇的第一内表面140和第二内表面142。标签124结合到储存空间116,即,主体标签124B覆盖第一内表面140和第二内表面142,使得主体标签124B在接合点144处基本上不起皱,视觉上不起皱,或根本不起皱。这在图4中示出。盖104可以包括提供内表面120的基部146。任选地,盖104的基部146提供盖104的第一内表面120a,并且任选地,悬垂裙部148提供盖104的第二内表面120b。盖104的第一内表面120a和盖的第二内表面120b在接合点150处相遇。粘合到盖104上的标签124,即盖标签124L,覆盖在盖104的第一内表面120a和盖104的第二内表面120b上,使得盖标签在接合点150处基本上不起皱,视觉上不起皱,或根本不起皱。
优选地,主体标签124B和盖标签124L永久地粘合到相应的表面,而在相应的标签和相应的表面之间不存在粘合剂。优选地,主体标签124B和盖标签124L每个均由覆盖各自的第一表面和第二表面的单张片材组成,并且为了覆盖整个内表面而该单张片材不包括在接合点处或拐角处过渡方向的切口、折翼等。优选地,主体标签124B和盖标签124L不需要机械紧固件来将标签124B,1124L保持在容器100上。因此,在一方面,根据所公开的概念的标签124被保持在容器100上而没有机械紧固件。
任选地,在任何实施方案中,主体标签124B和盖标签124L一起累积地覆盖封装的储藏室的至少90%的内表面,任选地封装的储藏室的至少95%的内表面,任选地封装的储藏室的至少98%的内表面,任选地,封装的储藏室的所有或基本上所有的内表面。换句话说,除了可能由于制造公差要求而暴露的微不足道的数量的储藏室表面之外,储藏室的产品接触表面的全部或基本上全部应当被氟聚合物标签覆盖。
任选地,如图3和图4所示,当容器100处于关闭位置时,裙部148啮合侧壁110以为储藏室122提供密封,从而使储藏室122与周围环境基本隔离。可以提供替代的密封装置,例如弹性垫圈。任选地,密封是防潮密封件,其使储藏室湿气密封。如本文所用,术语″湿气密封″被定义为表示容器和/或储藏室的水分进入(三天后)小于约1500微克水,在另一个实施方案中,约500微克水,在另一个实施方案中,约300微克的水,在另一个实施方案中,约150微克的水,通过以下测试方法测定:(a)将一克正或负0.25克分子筛干燥剂放入容器中,记录重量;(b)完全关闭容器;(c)将密闭容器放在相对湿度为80%,温度为72F的环境室内;(c)一天后,称量装有分子筛的容器的重量;(d)四天后,称量装有分子筛的容器;(e)从第四天的样品中减去第一天的样品,以微克水为单位计算容器的水分进入。
在图5中示出了处于打开位置的容器200的替代实施方案。如图1-4的容器100一样,容器200包括主体202和通过铰链206连接至主体202的盖204。主体202包括基部208和从基部208向上延伸至开口212的侧壁210。内部空间214包括适于容纳产品的内部储存空间216。与图1-4的容器100不同的是,内部储存空间216不占据内部空间214的整体。相反,内部储存空间216包括储存空间基部217(其可以与主体202的基部208共面或不共面)和从其延伸的内部侧壁219。内部侧壁219相对于主体202的侧壁210向内设置。该实施方案中的接合点比容器100的储藏室122的接合点更平缓并且不那么突然。然而,有必要利用适当的方法来将标签放置并粘合到储藏室,以确保牢固粘合,基本上不起皱,尤其是在接合点处或拐角处。
任选地,容器100,200包括儿童防护机构,以使容器难以或不可能被幼儿打开。任选地,该机构可以包括在申请人的WO 2018/204794,图36-48和随附的描述中公开的机构,其通过引用整体并入本文。简要地,如在此所描述的以及在本申请的图1和图2中所示,主体102包括向上延伸的突出部156B,并且盖104包括向下延伸的突出部156L。每个突出部156B,156L包括从容器100向外伸出的钩部158B,158L。钩部158B,158L构造成与突出部156B,156从中突出的开口的对应的边缘部162B,162L互锁。
当容器100处于关闭位置时(如图1所示),钩部158B,158L啮合相应的边缘部162B,162L。为了打开容器100,使用者可以向内按下按钮机构160B,160L。当发生这种情况时,突出部156B,156L向内枢转。一旦突出部156B,156L枢转足够远,钩部158B,158L便从相应的边缘部162B,162L脱开并脱离。在这一点上,儿童防护机构脱离,并且盖104可以枢转离开主体102以打开容器100。以这种方式,容器100任选地具有有益的儿童防护高级友好特征。根据所公开的概念,还可以考虑将其他儿童防护高级友好特征或机构与容器一起使用。
如上所述,内部储藏室的轮廓可能使常规FEP产品(例如FEP胶带)难以很好地粘合并均匀地放置在包装的内表面上,特别是在通过自动处理进行施加时。与将标签(例如,通过模内贴标签)施加到物体或包装的外表面时相比,这涉及不同的复杂性层。下面呈现的所公开概念的各个方面旨在克服这些困难。
任选的模内标签和压敏工艺
通常,模内贴标签(IML)或模内装饰(IMD)是在塑料注塑成型循环内对注塑成型的塑料零件或部件进行装饰或贴标签的过程。标签成为最终产品不可或缺的一部分,在印刷时创建装饰完整的物品。在此过程中,将具有所需表面特性的预打印标签***打开的注塑模具中,并通过例如真空端口或静电荷将其固定在适当的位置。关闭模具后,将塑料树脂注入模具中,将标签永久封装在完成的零件内。
压敏标签和模内标签之间的显著区别是压敏标签被粘贴到塑料物体的表面,而模内标签实际上变成了模制部件的组成部分。模内标签在制造容器的塑料零件时贴上。
与零件或容器配合的模内标签表面,即与熔融树脂接触的标签表面(即粘合层),通常由与塑料部件或容器相同的材料制成。
模内标签是永久性的,并且与产品集成在一起。它不会脱落,也不能被产品的最终用户移除。由于在生产塑料零件或容器之前将机器人定位到模具中,因此在放置期间精度得以提高。模内标签也具有柔韧性,并符合塑料零件或容器的形状和纹理,从而使产品在产品几何形状方面更具灵活性。
成品标签通常以″切割并堆叠″状态到达模制部位。拾取标签并将其放置在模具内通常由机器人自动完成。在此阶段,标签必须完全排出并具有所需的摩擦系数。这样,它们就不会彼此粘在一起,可以轻松进行拾取和放置。对于注塑成型,通常机器人会拾取标签并将其充电至~15kV,以使其带静电。这允许将标签放置在模具内并在模具中保持在原位。如果需要,将真空抽吸通道放置在标签所在的模具内,以便在模制过程中更好地固定。标签的FEP面朝向冷模零件。当在高温下将熔融塑料引入模具内部时(对于所有技术-注射/吹塑/热成型-温度取决于工艺和材料),只有具有与熔融塑料(几微米)相同的材料特性的标签背面熔化,并在迅速冷却时与塑料容器或零件融合在一起。循环完成后,打开模具,将准备好的零件或容器放置在传送带上,或再次由机器人拾取,然后堆叠在之前创建的容器或零件上。打开模具并取出产品后,机器人会为下一个循环快速放置新标签。
注射成型工艺包括将加热且熔融的聚合物注射到钢模中。对于模内贴标签,标签预先放置在同一模具内。当标签与模具内的熔融聚合物相遇时,它们会融合在一起。然后,物料冷却并固化为模具形状,其中标签融合到容器/零件壁上。塑料的熔化和注入温度通常在200℃-250℃的范围内(取决于塑料的类型)。为了快速冷却材料,通常将钢模具冷却,因此,模具内部的标签所遇到的实际温度要低一些。整个过程通常是自动化的,通常每次注射可持续5秒钟。
对于上述示例性FEP标签,当通过模内贴标签施加时,热粘合的衬底允许标签的平滑施加(厚度可能约为4-6密耳),以顺应容器储藏室的表面上的弯曲的几何形状。
粘合层与容器表面之间的粘合很重要。由于模内贴标签工艺,聚酯熔融粘合剂(例如粘结层的粘合剂)超出了简单的化学粘合。在以上提供的实施方案中,温度、压力和熔融的BOPP在粘合剂结构内产生局部迁移,从而允许聚合物链缠结和嵌入,从而在聚酯和BOPP之间形成粘结层。如在较高的剥离强度中观察到的那样,该粘结层有望具有增强的结合强度,并且在最终零件中降低脆性。
因此,模内贴标签技术可以唯一地用于向容器内部提供FEP层。
根据用于将氟聚合物层施加到容器内部的示例性方法,该方法包括提供容器,例如100个。在模内贴标签工艺中提供容器的步骤将需要在模具中将容器注塑成型。该方法还包括提供具有第一侧面和与第一侧面相对的第二侧面的主体标签,该第一侧面包括氟聚合物层的氟聚合物外表面,第二侧面包括适于与容器的储存空间的至少一个内表面接触和粘合的聚合物层的聚合物粘合表面。如上所述,主体标签优选在氟聚合物层和聚合物层之间包括粘结层。在模内贴标签工艺中,提供主体标签的步骤将在与容器注塑成型相同的模具中进行。该方法还包括将主体标签的粘合表面施加到至少一个内表面上。通过加热储存空间的粘合表面和/或内表面(例如,在模内贴标签工艺中的注射成型期间),主体标签粘合到储存空间的内表面。冷却后,主体标签永久粘合到储存空间的内表面。如果容器包括盖,则可以类似的方式将标签施加到盖上。
任选地,在任何实施方案中,通过共挤出形成标签。
用于***包装的FEP热成型复合托盘
作为FEP标签的替代方案,可以将FEP层作为机械***容器中的热成型复合托盘施加于容器(例如,图1-4的容器100)。FEP热成型复合材料托盘将包含FEP层或标签,该FEP层或标签在热成型过程中粘合到另一个聚合物衬底上。聚合物衬底可以包括聚丙烯,例如BOPP,或不同的聚合物材料,例如尼龙或聚乙烯。任选地,托盘的FEP层和聚合物衬底通过共挤出形成。
与注射成型技术不同,在热成型期间,将热塑性成型材料(处于网状或片状)送入模压机中。通常,成型材料以连续的辊的形式被提供,其被供给到模压机中。该过程使用热量和压力使材料成形。与通过注射模制进行模内贴标签一样,将标签(即FEP层)预先放置在模具内。当标签与模具中加热的聚合物相遇时,它们会融合在一起。然后将形成的复合材料冷却并固化为模具形状,同时将标签融合到容器/零件壁上。
用于热成型的塑料的工艺温度是所有模制工艺中最低的,在130-150℃的范围内(取决于塑料的类型)。为了快速冷却材料,通常将钢模具冷却,因此,模具内部的标签所遇到的实际温度要低一些。整个过程通常是自动化的,每个零件最多持续5秒。
简而言之,对复合材料托盘进行热成型可以包括以下步骤:(1)在进入模具之前将热塑性纤维网/片材预热;(2)将FEP片材(例如1-2密耳厚)保留在模具中;(3)软化的塑料进入模具;(4)模具合上,使塑料成型;(5)FEP层与塑料熔合;(6)塑料冷却;(7)打开模具,并形成包括聚合物衬底和FEP层的复合物的托盘。作为随后的步骤,将FEP热成型复合材料托盘机械地***到例如100的容器中,以为容器提供在储藏室表面上的FEP层。任选地,制作两个不同的此类托盘-一个用于主体,一个用于盖。每个这样的托盘可以分别机械地***到主体和盖中。以这种方式,储藏室的基本上整个产品接触表面可以被FEP覆盖。这种在包装内形成***物的热成型复合材料托盘应解决FEP层在包装储物室轮廓上起皱的问题。
***提取物或其他粘性产品的包装
所公开的概念可以用于例如为***提取物(例如碎片)或其他粘性产品(可能来自***或可能不来自***)提供储存。使用根据此处描述的任何过程施加的FEP层的可选优点可能包括以下任何一个或多个:
(a)在某些应用中,***提取物可能需要用于填充的耐高温表面。FEP的熔融温度为500°F至536°F,这使得产品可以在熔融温度例如为320°F的耐低温容器中填充。刚性容器内的FEP膜也允许用户获得很高的抗冲击和抗撕裂能力,从而允许使用刚性工具来帮助产品移除。
(b)任选地,FEP层提供了用于储存***提取物的表面,该表面不会因与***提取物接触而弄脏或导致其他标记。
(c)任选地,FEP层在相交的储藏室表面之间的接合点处不会起皱或以其他方式不均匀地放置。
(d)任选地,整个储藏室(可能会接触***提取物)都覆盖有FEP层。任选地,除了由于制造公差要求而暴露的微不足道的数量的储藏室表面之外,几乎整个储藏室都覆盖有FEP层。
(e)任选地,根据所公开概念的容器的FEP分层的储藏室表面具有等于或低于24达因/平方厘米的表面能。
(f)任选地,FEP分层的储藏室提供了强大的屏障,可消除产品残留和产品浸入膜中。
以下示例性实施方案进一步描述了本发明的可选方面,并且是本说明书的一部分。尽管这些示例性实施方案在技术上不是本申请的权利要求,但是这些示例性实施方案以与权利要求基本相同的格式阐述(每个权均带有数字标记,后跟字母标记)。以下示例性实施方案在从属关系中彼此称为″实施方案″而不是″权利要求″。
1A.容器,包括:
a.主体,具有基部和从基部向上延伸至开口的侧壁,基部和侧壁形成适于容纳产品的储藏室,该储藏室具有内表面;
b.盖,该盖任选地通过铰链连接到主体,该盖构造成覆盖开口以封闭储藏室,该盖具有至少一个内表面;以及
c.氟化乙烯丙烯(FEP)层,覆盖每个内表面的全部或基本全部。
2A.根据实施方案1A所述的容器,所述基部具有内表面,并且每个侧壁具有内表面,其中所述基部的内表面和每个侧壁的内表面在各自的接合点处相交,并且其中所述FEP层在相应的接合点处不会起皱。
3A.根据实施方案1A或2A所述的容器,其中所述FEP层设置在标签上,所述标签包括FEP层、在FEP层下方的粘合剂粘结层以及包括聚合物材料的聚合物粘合层,所述聚合物材料被配置为任选地通过模内贴标签工艺或压敏贴标签工艺热粘合到内表面。
4A.根据实施方案1A至3A中任一项所述的容器,其中所述FEP层设置在热成型复合托盘上,所述热成型包括粘合至聚合物衬底以形成所述热成型复合托盘的FEP层,所述热成型复合托盘被机械地***容器中。
5A.根据实施方案1A至4A中任一项所述的容器,其中所述FEP层的厚度为1-2密耳。
6A.用于制造根据实施方案1A至4A中任一项所述的容器的方法,包括在注塑过程中在模具中将FEP层贴到容器上。
7A.根据实施方案1A至5A中任一项所述的容器用于储存任选为粘性或发粘的***提取物的用途。
1B.将氟聚合物层施加到容器内部的方法,该方法包括:
·提供容器,该容器包括具有基部和从基部向上延伸到开口的侧壁的主体,该基部和侧壁形成内部空间,该内部空间包括适于容纳产品的内部储存空间,该储存空间具有至少一个内表面;
·提供具有第一侧面和与第一侧面相对的第二侧面的主体标签,第一侧面包括氟聚合物层的氟聚合物外表面,第二侧面包括适于与储存空间的至少一个内表面接触并粘合的聚合物层的聚合物粘合表面,所述主体标签还包括在所述氟聚合物层和所述聚合物层之间的粘结层;以及
·将所述主体标签的粘合表面施加到所述至少一个内表面,并通过加热粘合表面和/或储存空间的至少一个内表面,使所述主体标签粘合到储存空间的至少一个内表面,其中,在冷却时,所述主体标签永久地粘合到储存空间的内表面。
2B.根据实施方案1B所述的方法,所述容器还包括盖,所述盖构造成当所述容器处于关闭位置时覆盖所述开口。
3B.根据实施方案2B所述的方法,其中,所述盖包括至少一个内表面,当所述容器处于关闭位置时,所述内表面封闭所述储存空间以形成完全封装的储藏室,所述方法还包括:
·提供具有第一侧面和与第一侧面相对的第二侧面的盖标签,该第一侧面包括氟聚合物层的氟聚合物外表面,该第二侧面包括适合于与盖的至少一个内表面接触和粘合的聚合物层的聚合物粘合表面;以及
·将盖标签的粘合表面施加到盖的至少一个内表面,并通过加热粘合表面和/或盖的至少一个内表面,使盖标签粘合到至少一个内表面,其中在冷却时,盖标签永久地粘合到盖的至少一个内表面。
4B.根据实施方案2B或3B所述的方法,其中所述盖通过铰链连接到所述主体。
5B.根据实施方案1B至4B中任一项所述的方法,其中所述主体标签和/或盖标签的氟聚合物层包括氟化乙烯丙烯(FEP)。
6B.根据实施方案1B至5B中任一项所述的方法,其中所述粘结层粘附至所述氟聚合物层和所述粘合层,从而有效地将它们连结以形成所述标签。
7B.根据实施方案1B至6B中任一项所述的方法,其中所述粘结层包括双面涂覆的聚合物膜和合成橡胶基粘合剂。
8B.根据实施方案1B至7B中任一项所述的方法,其中所述聚合物层包括与所述内表面的聚合物材料相容的聚合物材料,从而通过加热所述粘合表面和/或所述至少一个内表面促进所述标签与所述内表面的粘合。
9B.根据实施方案1B至8B中任一项所述的方法,其中,所述主体标签被永久地粘合到所述储存空间的所述至少一个内表面,和/或所述盖标签被永久性地粘合到所述盖的所述至少一个内表面,在相应标签和相应表面之间不存在粘合剂。
10B.根据实施方案1B至9B中任一项所述的方法,其中,在所述方法期间通过注射成型形成的容器和所述主体标签被永久地粘合到所述储存空间的所述至少一个内表面,和/或在模内贴标签工艺中,所述盖标签被永久地粘合到所述盖的至少一个内表面。
11B.根据实施方案1B至10B中任一项所述的方法,其中所述主体标签和盖标签一起累计覆盖封装的储藏室的至少90%的内表面,任选地至少95%的内表面,任选地至少98%的内表面,任选地封装的储藏室的全部或基本上全部内表面。
12B.根据实施方案1B至11B中任一项所述的方法,其中,所述储存空间的所述至少一个内表面包括在接合点处相遇的第一内表面和第二内表面,其中,所述主体标签同时覆盖所述第一内表面和所述第二内表面,使得标签在接合点处不会起皱。
13B.根据实施方案1B至12B中任一项所述的方法,其中所述主体标签和/或盖标签的氟聚合物层为1-2密耳厚。
14B.根据实施方案3B至13B中任一项的方法制成的容器。
15B.根据实施方案14B所述的容器,其中,当处于关闭位置时,主体标签和盖标签覆盖储藏室的至少95%,任选地储藏室的至少98%,任选地整个储藏室。
16B.根据实施方案14B或15B所述的容器,其中所述盖的部分,任选地为裙部与所述主体的部分,任选地为侧壁啮合,以为所述储藏室提供密封,从而使所述储藏室与所述周围环境基本隔离。
17B.根据实施方案16B所述的容器,其中,所述密封使所述储藏室湿气密封。
18B.根据实施方案14B至17B中任一项所述的容器用于储存***提取物的用途。
19B.根据实施方案18B所述的用途,其中所述***提取物为粘性的,任选地为碎片或蜡的形式,其中所述氟聚合物层的所述氟聚合物外表面的表面能为24达因/平方厘米或低于24达因/平方厘米,从而提供提取物不粘附的表面。
20B.根据实施方案14B至17B中任一项所述的容器的用途,其用于储存粘性产品,任选地为糖食,其中所述氟聚合物层的所述氟聚合物外表面的表面能为24达因/平方厘米或低于24达因/平方厘米,以提供产品不粘附的表面。
21B.根据实施方案19B或20B所述的用途,其中从所述储藏室去除所述提取物或产品不会在所述氟聚合物层的所述氟聚合物外表面上留下残留物或其他标记。
虽然已经参考本发明的具体实施例详细描述了本发明,但是对于本领域技术人员显而易见的是,在不脱离本发明的精神和范围的情况下,可以对其进行各种改变和修改。
Claims (21)
1.用于将氟聚合物层施加到容器内部的模内贴标签方法,该方法包括:
·在模具内提供主体标签,该主体标签具有第一侧面和与第一侧面相对的第二侧面,所述第一侧面包括氟聚合物层的氟聚合物外表面,第二侧面包括聚合物层的聚合物粘合表面,在向聚合物粘合表面和/或聚合物衬底施加足够的热量然后冷却之后,所述聚合物粘合表面适于与相容的聚合物衬底接触并粘合,所述主体标签还包括在所述氟聚合物层和聚合物层之间的粘结层;
·将熔融的热塑性树脂注入所述模具中以形成容器,该容器包括具有基部和从所述基部向上延伸到开口的侧壁的主体,所述基部和侧壁形成内部空间,该内部空间包括适于容纳产品的内部储存空间,该储存空间具有至少一个内表面;以及
·在模具中,将所述主体标签的粘合表面施加到所述至少一个内表面,并通过充分加热粘合表面和/或储存空间的至少一个内表面,然后冷却,使所述主体标签粘合到储存空间的至少一个内表面,其中,在冷却时,所述主体标签永久地粘合到储存空间的内表面,并且所述主体是实心且刚性的。
2.根据权利要求1所述的方法,所述容器还包括盖,所述盖构造成当所述容器处于关闭位置时覆盖所述开口。
3.根据权利要求2所述的方法,其中,所述盖包括至少一个内表面,当所述容器处于关闭位置时,所述内表面封闭所述储存空间以形成完全封装的储藏室,所述方法还包括:
·在所述模具或第二模具内提供盖标签,该盖标签具有第一侧面和与第一侧面相对的第二侧面,所述第一侧面包括氟聚合物层的氟聚合物外表面,所述第二侧面包括聚合物粘合表面,在向聚合物粘合表面和/或聚合物衬底施加足够的热量然后冷却之后,所述聚合物粘合表面适于与相容的聚合物衬底接触并粘合,所述盖标签还包括在氟聚合物层和聚合物层之间的粘结层;并且
·在设有所述盖标签的模具或第二模具中,将所述盖标签的粘合表面施加至盖的至少一个内表面,并通过充分加热所述粘合表面和/或盖空间的至少一个内表面,然后冷却,使盖标签粘合到所述盖的至少一个内表面,其中,在冷却时,所述盖标签永久地粘合到所述盖的内表面,并且所述盖是实心的,并且任选地是刚性的。
4.根据权利要求2或3所述的方法,其中,所述盖通过铰链连接到所述主体。
5.根据前述权利要求中任一项所述的方法,其中,所述主体标签和/或盖标签的氟聚合物层包括氟化乙烯丙烯(FEP)。
6.根据前述权利要求中任一项所述的方法,其中,所述粘结层粘附至所述氟聚合物层和所述粘合层,从而有效地将它们连结以形成所述标签。
7.根据前述权利要求中任一项所述的方法,其中,所述粘结层包括双面涂覆的聚合物膜和合成橡胶基粘合剂。
8.根据前述权利要求中任一项所述的方法,其中,所述聚合物层包括与所述内表面的聚合物材料相容的聚合物材料,从而通过加热所述粘合表面和/或所述至少一个内表面促进所述标签与所述内表面的粘合。
9.根据前述权利要求中任一项所述的方法,其中,所述主体标签被永久地粘合到所述储存空间的所述至少一个内表面,和/或所述盖标签被永久性地粘合到所述盖的所述至少一个内表面,在相应标签和相应表面之间不存在粘合剂。
10.根据前述权利要求中任一项所述的方法,其中,将熔融的热塑性树脂注入到所述模具中以形成容器的步骤是在在所述模具内提供主体标签的步骤之后执行的。
11.根据权利要求3至10中任一项所述的方法,其中,所述主体标签和盖标签一起累计覆盖封装的储藏室的至少90%的内表面,任选地至少95%的内表面,任选地至少98%的内表面,任选地封装的储藏室的全部或基本上全部内表面。
12.根据前述权利要求中任一项所述的方法,其中,所述储存空间的所述至少一个内表面包括在接合点处相遇的第一内表面和第二内表面,其中,所述主体标签同时覆盖所述第一内表面和所述第二内表面,使得标签在接合点处不会起皱。
13.根据前述权利要求中任一项所述的方法,其中,所述主体标签和/或盖标签的氟聚合物层为0.5-5密耳厚,任选地为0.5-3密耳厚,任选地为1-3密耳厚,任选地为1-2密耳厚。
14.根据权利要求3-13中任一项的方法制成的容器。
15.根据权利要求14所述的容器,其中,当处于关闭位置时,所述主体标签和所述盖标签覆盖至少95%,任选地至少98%,任选地整个所述储藏室。
16.根据权利要求14或15所述的容器,其中,所述盖的部分,任选地为裙部与所述主体的部分,任选地为侧壁啮合,以为所述储藏室提供密封,从而使所述储藏室与所述周围环境基本隔离。
17.根据权利要求16所述的容器,其中,所述密封使所述储藏室湿气密封。
18.根据权利要求14至17中任一项所述的容器在储存***提取物中的用途。
19.根据权利要求18所述的用途,其中,所述***提取物为粘性的,任选地为碎片或蜡的形式,其中所述氟聚合物层的所述氟聚合物外表面的表面能为24达因/平方厘米或低于24达因/平方厘米,从而提供提取物不粘附的表面。
20.根据权利要求14至17中任一项所述的容器的用途,其用于储存粘性产品,任选地为糖食,其中所述氟聚合物层的所述氟聚合物外表面的表面能为24达因/平方厘米或低于24达因/平方厘米,以提供产品不粘附的表面。
21.根据权利要求19或20所述的用途,其中,从所述储藏室去除所述提取物或产品不会在所述氟聚合物层的所述氟聚合物外表面上留下残留物或其他标记。
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US201762598994P | 2017-12-14 | 2017-12-14 | |
US62/598,994 | 2017-12-14 | ||
PCT/US2018/065729 WO2019118865A1 (en) | 2017-12-14 | 2018-12-14 | Container with lid having fluorinated polymer internal surface and methods for making the same |
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CN111801210A true CN111801210A (zh) | 2020-10-20 |
CN111801210B CN111801210B (zh) | 2023-02-10 |
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US (1) | US20200391420A1 (zh) |
EP (1) | EP3723960A1 (zh) |
JP (1) | JP2021506626A (zh) |
CN (1) | CN111801210B (zh) |
CA (1) | CA3083367A1 (zh) |
WO (1) | WO2019118865A1 (zh) |
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HRP20231651T1 (hr) * | 2019-04-19 | 2024-03-15 | Siropack Italia S.R.L. | Postupak proizvodnje spremnika za prehrambene proizvode |
US20220363453A1 (en) * | 2021-05-14 | 2022-11-17 | Altria Client Services Llc | Container with push-and-slide locking mechanism |
USD1011876S1 (en) | 2021-05-14 | 2024-01-23 | Altria Client Services Llc | Combined container with push-and-slide locking mechanism |
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Also Published As
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US20200391420A1 (en) | 2020-12-17 |
JP2021506626A (ja) | 2021-02-22 |
CN111801210B (zh) | 2023-02-10 |
WO2019118865A1 (en) | 2019-06-20 |
EP3723960A1 (en) | 2020-10-21 |
CA3083367A1 (en) | 2019-06-20 |
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