CN1219685C - 饮料或食品的绝热容器及其生产方法 - Google Patents

饮料或食品的绝热容器及其生产方法 Download PDF

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CN1219685C
CN1219685C CNB028036433A CN02803643A CN1219685C CN 1219685 C CN1219685 C CN 1219685C CN B028036433 A CNB028036433 A CN B028036433A CN 02803643 A CN02803643 A CN 02803643A CN 1219685 C CN1219685 C CN 1219685C
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paper material
froth bed
material layer
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polyethylene
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约翰·查尔斯·德布拉尔
拉扎尔·约翰·马科凯
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Appvion LLC
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Abstract

一种绝热饮料杯或套筒构制成具有一个设置在食品或饮料纸原料内表面上的泡沫层。一个聚乙烯膜层布置在纸原料层和饮料容器内表面之间的位置上。泡沫层减少了饮料和用户的手之间的能量传送,从而可使得使用者持握杯的时间延长而不致使用户感到不适或疼痛,例如,可显著延长纸杯的保持时间。饮料杯的外表面仍保持高的可印刷性能,在杯的制造之前和之后可预先布置高质量的图形。

Description

饮料或食品的绝热容器及其生产方法
优先权
本发明人要求2001年6月18日提交的代理人档案号为0011-0372P的美国临时申请“饮料或食品的绝热容器”的利益;其全部内容在此用作参考。
技术领域
本发明涉及用于绝热饮料容器和容器库存材料的设备和方法。具体来说,本发明涉及具有改进的绝热性质的被绝热的纸基饮料容器或库存材料。
背景技术
目前标准的纸杯原料使过多热量可通过绝热饮料容器的壁传递。因此,当过多热量可通过容器壁传递时会使用户的手感到不适,或者有时甚至感到灼痛。这样,由于容器内容物过热使用户不得不放开容器而感到不便。对于冷的饮料,热量从用户的手迅速传至容器的内容物,会出现类似但又相反的情形。
授予Ioka的美国专利第4,435,344号描述了一种用于生产绝热的复合纸容器的方法,所述容器具有一个本体构件和一个底部构件。本体构件是由涂覆或层压了热塑性合成树脂膜的纸形成的。然后,本体构件表面被加热以形成在容器的本体构件的内和外表面或内外表面之一上的泡沫聚乙烯绝热层。绝热的本体构件然后被连接在底部构件上。
授予Geddes等人的美国专利第6,030,476号和笫5,840,139号描述了一种方法,该方法用于生产绝热饮料容器或杯、库存材料和用库存材料制成的容器。库存材料包括一个基层、一个在基层的一部分上形成的绝热层和施加在绝热层上的印刷图案/矿物油。绝热层是由热塑性合成树脂膜构成的。美国专利第6,030,476号描述了一种在纸杯外表面上的聚乙烯泡沫。
欧洲专利申请EP 0940240 A2描述了一种在印刷物存在的区域中带有目标热绝的绝热纸杯。杯的本体构件在其外表面上涂有可起泡的合成树脂,而在其内表面上涂有可以有效防止液体透过的合成树脂内表面层。底板构件可在其上表面上涂覆泡沫或非泡沫的合成树脂。在杯的外表面上用水基墨在使合成树脂起泡前进行印刷。接着通过使纸原料中含有的水分蒸发而使低密度聚乙烯发泡。
欧洲专利申请EP 1060879A2描述了一种绝热纸杯,它具有一个本体构件,在本体构件的外表面上部分或全部涂有泡沫低密度聚乙烯,而在其内表面涂有非泡沫改性低密度聚乙烯。
但是,背景技术的上述设备和方法有下述缺点。其它公知的设计则为了提供绝热性能而牺牲了杯外表面上的可印刷性,或者,不能提供足够的绝热性能。如上所述,许多设计必须在制造纸杯前施加印刷材料,因而局限了在杯子制成后印刷或用图改善杯子的性能。
相关的技术尚未提供一种能够有效地阻抗在容器内容物和外界之间传热的绝热纸原料。另外,相关技术不能以成本效益方式来实现足够的绝热性能。
发明内容
本发明可克服传统的设备和方法的缺陷,实现传统的设备和方法所不能实现的其它优点。
本发明的一个方面是提供一种绝热的饮料容器、套筒或库存原料,可减少通过容器壁的能量传递,提供改进的功能性和实用性。
本发明的一个方面是提供一种绝热的容器、套筒或库存材料,其具有对高质量的印刷和图案的超级保持时间和预先安排。
本发明部分地源于一种认识,即,需要形成一种生产能力来生产可以印刷或用图改进的半成品纸杯、套筒或库存原料。
按照本发明的第一方面,提供一种绝热饮料容器原料,所述原料具有一个最内表面和一个最外表面,所述原料包括:一个纸原料层,具有一个内表面和一个外表面,所述纸原料层的所述外表面构成所述原料的最外表面;一个沿所述纸原料层的所述内表面设置的泡沫层,所述泡沫层是用高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯或取向聚丙烯形成的热层压泡沫;以及一个聚乙烯障碍膜层,沿纸原料层的内表面设置并与所述泡沫层和所述纸原料层连续、直接地接触,其中泡沫层构成所述原料的所述最内表面。
按照本发明的第二方面,提供一种绝热饮料容器原料,所述原料具有一个最内表面和一个最外表面,所述原料包括:一个纸原料层,具有一个内表面和一个外表面,所述纸原料层的所述外表面构成所述原料的最外表面;一个沿所述纸原料层的所述内表面设置的泡沫层,其中所述泡沫层是用高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯或取向聚丙烯形成的热层压泡沫;一个第一聚乙烯障碍膜层,沿纸原料层的内表面设置并与所述泡沫层和所述纸原料层连续、直接地接触;以及一个第二聚乙烯障碍膜层,所述泡沫层夹置在沿所述纸原料层的内表面设置的所述第一聚乙烯障碍膜层和所述第二聚乙烯障碍膜层之间。
按照本发明的第三方面,提供一种绝热饮料容器,它包括:一个具有侧部的容器壁,围绕一个饮料容纳空间并具有一个最内表面和一个最外表面;以及一个沿下部的侧部接合所述容器壁的底部;一个沿所述侧部接合所述容器壁的底部,其中所述容器壁还包括:一个构成所述容器壁的最外表面的纸原料层;一个薄的聚乙烯障碍膜层,布置在所述纸原料层和所述饮料容纳空间之间并构成所述容器壁的所述最内表面;以及一个热层压泡沫层,所述泡沫层沿纸原料层的内表面布置,与所述聚乙烯障碍膜层和所述纸原料层连续、直接地接触。
按照本发明的第四方面,提供一种生产绝热饮料容器的方法,该方法包括以下步骤:提供一纸杯坯,该纸杯坯具有一个包围一个饮料容纳空间的容器壁、一个底部和一个沿所述容器壁的外表面布置的纸原料层;在发泡前将发泡剂混入聚合物,然后使聚合物发泡成一个泡沫层;以及将泡沫层附着在所述纸杯坯上。
按照本发明的第五方面,提供一种绝热饮料容器套筒,它包括:一个无底部容器壁,具有围绕一饮料容纳空间的侧壁,该侧壁具有一个最内表面和一个最外表面;一个形成所述侧壁的最外表面的纸原料层;一个沿所述纸原料层内表面设置的热层压泡沫层;以及一个聚乙烯障碍膜层,沿所述纸原料层内表面设置,与所述泡沫层和所述纸原料层连续、直接地接触,其中所述泡沫层构成所述套筒的最内表面。
按照本发明的第六方面,提供一种绝热饮料容器套筒,它包括:一个无底部容器壁,具有围绕一饮料容纳空间的侧壁,该侧壁具有一个最内表面和一个最外表面;一个构成所述侧壁的最外表面的纸原料层;一个沿所述纸原料层内表面设置的热层压泡沫层;一个第一聚乙烯障碍膜层,沿所述纸原料层内表面设置,与所述泡沫层和所述纸原料层连续、直接地接触,其中所述泡沫层构成所述套筒的最内表面;以及一个第二聚乙烯障碍膜层,所述泡沫层夹置在所述第一和第二聚乙烯障碍膜层之间。
从下面的详细描述中可进一步理解本发明的应用范围。但是,表示本发明的推荐实施例的详细说明和具体实例显然只是为了说明而给出的,本专业技术人员根据这种详细描述可以理解在本发明范围以内的各种修改和变化。
附图说明
现在对照以下附图详细描述本发明,从而充分理解本发明,附图只是以举例方式给出,因而并不是对本发明的限定。
图1是按照本发明的绝热饮料容器的侧剖图;
图2是按照本发明的第二实施例的绝热饮料容器壁或套筒的剖视图;
图3是按照本发明的第三实施例的绝热饮料容器壁的剖视图;
图4是按照本发明的第四实施例的绝热饮料容器壁的剖视图;
图5是按照本发明的第四实施例的绝热饮料容器壁的剖视图;
图6是实验数据图表,表示本发明实施例和市售产品的实际和比较的保持时间;
图7是按照本发明的绝热饮料容器套筒的剖视图;
图8是按照本发明另一实施例的绝热饮料容器壁或饮料容器套筒的剖视图。
具体实施方式
本发明涉及一种绝热饮料容器或杯、容器原料和生产绝热饮料容器或库存材料的方法,其利用在食品或饮料纸原料表面上挤压或层压的聚乙烯泡沫层。下面对照附图详述本发明。
图2至图5是按照本发明各实施例的绝热饮料容器壁11的剖视图。本专业技术人员懂得,如图1所示的绝热容器10很容易采用图2至5所示的各种饮料容器壁。虽然下面的描述涉及杯,但是,本发明的技术也可用于各容器或表面,例如,饮料容器的绝热套筒或原料可以用附图中所示任何一个实施例来构制。
图1是按照本发明的绝热饮料容器的侧剖图。这种绝热饮料容器包括一个容器壁1,该容器壁具有一个上侧部7、一个下侧部8和一个底部9。在容器壁1的上侧部7、下侧部8和底部9之间形成一个饮料容纳空间11。
如前所述,目前标准的纸杯原料使过多热量可通过容器的壁传递。这样,当用户持握热或冷的容器时,使用户的手感到不适,甚至因热或冷而感到疼痛。纸原料承受饮料容纳空间和容器最外表面之间传热的能力的定量测量往往称为保持时间。显然本发明相对于相关技术可以显著改善纸基原料的饮料容器的保持时间。
本发明利用附着或有选择地附着在纸原料表面上的含有气体的薄膜。含有气体的薄膜层可提供对通过容器壁1传热的阻抗。本发明提供一种绝热容器结构和一种生产这种结构的方法,以减少通过容器壁的传热,从而提供提高的功能性和实用性。
图2是按照本发明第一实施例的绝热饮料容器壁或套筒1的剖视图。饮料容器壁或套筒1包括一个纸原料2,以及一个挤压或层压的泡沫层3。纸原料2提供结构刚度并形成容器10或套筒壁一部分的所需形状。挤压或层压泡沫层3附着在纸原料2的(例如面对饮料容纳空间11的)内表面上并发挥含有气体的薄膜层的功能。泡沫层3用于向容器提供绝热性质。
纸原料2是用于制造饮料杯和其它食品容器的标准纸。纸原料2可以选择一个为杯结构提供最佳物理特性的厚度。重要的物理特性包括折叠强度、刚性、抗撕和抗拉强度。
需要的纸厚度选择成使所得到的成品杯壁1的厚度不负面影响转换、处置或成品杯的性质。饮料和食品容器的典型纸原料2,其纸原料2厚度范围为10至40密耳,在本发明推荐实施例中的厚度具体为10至26密耳。当本发明应用于饮料套筒时,纸原料2可选择成使厚度可提供的适当的物理特性如强度,以便构制如图1所示那样的包围一饮料容器10的套筒。重要的物理特性包括折叠强度、刚性、抗撕和抗拉强度。选择适当的厚度,使得到的套筒和杯的壁不负面影响处置、分配或不使终端用户感到笨重。影响纸原料选择的附加标准包括外观和成本。可以选择光滑的漂白纸,以便改善印刷质量及杯的吸引力,或者可以选择棕色牛皮纸以降低成本。对于绝热饮料套筒的应用来说,套筒原料适宜的纸在2密耳至10密耳的范围内。
作为挤压层或层压层或当熔化或熔合时,上述挤压或层压泡沫层3被施加在纸原料2上。挤压或层压泡沫层3的目的是提供绝热性质,以便容纳液体及提供热封。但是,挤压或层压泡沫层3也可以用作水分传送的障碍,及进一步在构制容器时有助于缝的密封。在绝热饮料套筒的情形中,泡沫层3是含有气体层,它提供对通过套筒壁传热的阻抗。
虽然并非限定,但是,挤压或层压泡沫层3可以用任何下述实例的材料形成:高密度聚乙烯(HDPE)、低密度聚乙烯(LDPE)、线性低密度聚乙烯(LLDPE)、取向的聚丙烯(OPP)等。HDPE和LDPE是本发明推荐实施例中的理想材料。
也可以包括添加剂,以便改善材料的各种性质或有助于制造工艺。这些添加剂包括但又不局限于任何下述实例的添加剂:乙烯醋酸乙烯酯(EVA)、乙烯乙烯醇(EVOH)和增塑剂。
泡沫层3在制造过程中均匀地贴附在纸原料上。在泡沫层3的膜内含有的气体对容器壁赋予高水平的绝热性能。含有气体的泡沫层3的一个重要方面是提供对能量传递的阻抗。含有的气体量是可变的,取决于使一般用户持握容器外部感到舒适的规定容量。因此,含有空气的需要量一般是按照容器的预期用户而变化的。
例如,用于供应咖啡(一般为190° F)的容器比用于供应相对较凉的汤类(一般为160° F)的杯需要对能量流的更大阻抗。绝热层的附加好处是容器将食品或饮料更长时间地保持在其供应温度上的能力。
泡沫层3可以层压或挤压在纸原料2上。当膜被层压时可以使用含有气体的膜如Sealea Air公司制造的CA-20或其它产品。当膜被挤压在纸原料2上时,在挤压前将发泡剂混入聚合物中。在挤压过程中,含有的发泡剂在膜内形成气泡。挤压法提供的附加优点是在一个操作步骤中形成产品。
绝热泡沫层3最好在2和30磅/3300英尺2之间,更为推荐的是在5和15磅/3300英尺2之间。膜的密度最好在1.0和3.0磅/英尺3之间。含有气体的绝热泡沫层3的厚度最好在5和30密耳之间,更为推荐的是在10和20密耳之间。泡沫层3可以是用连层的一个层形成的含有气体的膜层,或者可以是膜和泡沫的叠层。
图3是按照本发明第二实施例的容器壁的剖视图。一个膜层4被挤压、层压或涂覆在泡沫层3和饮料容纳空间11之间的位置上。因此,泡沫层3被夹置在纸原料2和膜层4之间。下文中膜层4将称为PE层4。PE层4可以用作阻抗水分传送的障碍,并在容器构制过程中有助于缝的密封。
在一个推荐实施例中,首先形成泡沫层3,然后将其熔化挤压、层压或熔合在纸原料2的表面上。在纸原料2内保持的残留水分在特性上取决于相关的技术,而并不取决于形成泡沫层3的机制。泡沫也可以挤压在纸原料上,但是,在每个实例中,要在挤压或泡沫形成前通过将发泡剂混入聚合物而形成发泡。含有的发泡剂在挤压过程中在膜内形成气泡。挤压法提供的优点是在一个操作步骤中直接形成产品。
为了接受或适应各种印墨,泡沫层3也可经过处理。泡沫层3可以通过业内公知的手段如电晕处理、火焰处理、臭氧处理、涂覆等进行处理,但又不局限于这些手段。
图4是按照本发明第三实施例的容器壁的剖视图。一个PE层4被挤压、层压或涂覆在泡沫层3和纸原料2之间的位置上。但是,PE层4也可以用作阻抗水分传送的障碍,并在容器构制过程中有助于缝的密封。
PE层4可以用下述实例的材料形成,但又不局限于下述材料:高密度聚乙烯(HDPE)、低密度聚乙烯(LDPE)、线性低密度聚乙烯(LLDPE)、取向聚丙烯(OPP)等。在本发明的一个推荐实施例中,HDPE和LDPE是理想的材料。
为增强各种材料性质或有助于制造工艺,可以使用添加剂。这些添加剂包括但又不局限于下述实例的添加剂:乙烯醋酸乙烯酯(EVA)、乙烯乙烯醇(EVOH)和增塑剂。
图5是按照本发明第四实施例的容器壁的剖视图。一个PE层4已被施加在纸原料2的外表面上。PE层4可以被层压、挤压或涂覆在纸原料表面上。PE层4也可用作容器内放置的饮料或食品的障碍层,也可用作密封机构。或者,PE层4也可作为最内层,例如最靠近饮料容纳空间11设置。另外,附加的PE层4可以根据需要施加在容器壁1的内表面或外表面上,以便增加对液体的附加障碍层或在容器内进行热封。PE层4可以被施加在纸原料上或泡沫上。
用于本发明的附加涂覆层的一种推荐的涂覆材料是膨胀泡沫。这种膨胀泡沫材料是封装在聚合物壳中的异丁烷。这种膨胀泡沫胶囊被添加在涂层中,具有小的直径。在使泡沫干燥及加热至一定温度时,封装的异丁烯从液体变为气体,聚合物壳以适当的容积变化膨胀。
得到的膨胀球体或空腔具有很低的密度和低的导热性。膨胀的泡沫也具有形成粗糙表面而进一步减少容器壁内层间接触面积,从而减少传热的优点。一个涂覆在纸原料外面的膨胀泡沫薄层对于粗糙化和纹理化以帮助持握容器特别有用。
一种推荐的涂层是泡沫涂层。泡沫涂层是利用内含空气的涂层。在涂层中弥散的空气形成低的涂层密度及低的传热性。泡沫涂层也可接受并易于处理,以实现表面改性。因此,泡沫涂层可通过压花机、压力机或其它机械装置形成粗糙的或穿孔的表面。
泡沫涂层也具有用作单一涂层的能力,或者也可同时用作绝热涂层和印刷涂层,这取决于终端用户的应用和需要。
为绝热涂层选择的涂覆材料弥散在含水系统中,该含水系统根据需要带有附加成分以提供加工和应用的方便性。也可以使用颜料如硅土、碳酸钙、粘土和合成颜料。
为了将涂层贴附在纸基层上,使用了粘合剂。典型的粘合剂可以从聚乙烯醇、SBR乳胶、浆糊、聚丙烯酸酯和相关技术中公知的其它粘合剂中选择,但又不局限于这些粘合剂。为了有助于弥散、流变能力和涂覆处置,可以使用添加剂。这些添加剂包括但又不局限于消去泡沫剂、导电聚合物、苯乙烯马来酸酐、增稠剂等。
可以施加介于2和30磅/3300英尺2之间,最好介于5和15磅/3300英尺2之间的绝热涂层。绝热涂层的推荐厚度为1和15密耳之间,最好在3和10密耳之间。
虽然授予Shih等人的美国专利笫5,911,904号;授予Grischchenko等人的美国专利第5,993,705号及授予Sadlier的美国专利笫6,085,970号涉及与本发明不同的绝热容器涂层和制造方法,但是,一般地描述了在纸杯/容器原料技术中通常使用的许多涂层制造、加热和组装工艺。这些涂覆、加热和组装工艺的细节在本说明书中用作本发明的参考。
在附图中表示的各推荐实施例涉及在容器内表面(例如容器的饮料那侧)上施加泡沫层3。但是,本专业技术人员显然懂得,作为PE膜层4的替代或附加,沿容器的外表面也可以施加泡沫层3。
本发明的发明人在对本发明各推荐实施例进行测试时已经发现了非常有利的、迄今为止未预见到的技术效果。例如,制有图3所示的结构的容器壁1的容器10已表现出超常的保持时间、阻止水分和阻止蒸汽传递的性能。另外,本发明的发明人还证明,与在纸原料2的外表面上设置水分泡沫层3的情形,例如,Georgia Pacific TM公司销售的Perfec TouchTM杯相比较,图3所示实施例的保持时间有显著增加。
如前所述,纸原料承受饮料容纳空间和容器最外表面之间传热的能力的定量测定往往称为保持时间。采用在纸原料2外表面上设置的泡沫层3时,饮料(例如咖啡)的热量促使纸原料内的残留水分的加热和蒸发。因此,使用者舒适地持握热的容器10的延续时间,例如,保持时间可显著被缩短。
图3所示的推荐实施例似乎最佳地阻止了向纸原料2的传热,从而减少了传热,这是由于在最内表面设置了水蒸汽传递速率障碍层,它可防止蒸汽通过杯原料的质量传递而产生的加热。采用本发明的推荐实施例显著增加了保持时间。
图6是实验数据图表,表示本发明实施例和市售产品的实际和比较的保持时间。图7是按照本发明的绝热饮料容器套筒的剖视图。图8是按照本发明另一实施例的绝热饮料壁1或饮料容器壁套筒壁1的剖视图。
绝热饮料容器套筒12显然可以容易地采用各附图所示的饮料容器原料(容器壁)1。绝热饮料容器套筒12往往会在如图1所示的那种饮料容器的外表面上打滑。如图8所示,一个中间层5设置在纸原料2和泡沫层3之间。中间层5作为挤压层、层压层或涂层施加在纸原料上。该层的目的是使含有气体的泡沫层3附着在纸原料2上。但是,中间层5也可以用作水分传送的障碍及用作在构制套筒时对缝进行密封的辅助。中间层5使用的典型材料包括但又不局限于高密度聚乙烯(HDPE)、低密度聚乙烯(LDPE)、线性低密度聚乙烯(LLDP)、取向聚丙烯(DPP);以及粘合剂如热熔粘合剂、水基粘合剂和溶剂基粘合剂等。
业内公知的添加剂也可用于增进某种性质或有助于加工处理,可以包括但又不局限于乙烯醋酸乙烯酯(EVA)、乙烯乙烯醇(EVOH)和增塑剂。取决于终端用户,外层4施加在纸原料上以提供一个可以具有下述性质的表面,所用材料包括但又不局限于:接受高质量图形和印墨的材料、提供触感的材料、随温度改变颜色的材料、提供缝密封性能的材料及提供更可靠的夹持表面的材料等。套筒12的结构可以优选地取向,使泡沫层3朝向杯11的表面,使纸表面2、4朝外,例如,可被使用者看到。但是,套筒结构也可以逆反,使泡沫在外面,使纸表面2、4向内朝向杯/容器11的壁。
图6是实验数据图表,表示本发明实施例和市售产品的实际和比较的保持时间。图6表示不同试件达到的保持时间(以秒测量)。各种试件注有大约230ml的大约90℃(194°F浇入温度)的水。
在表格1中,试件S2是一个大家称为Insulair的容器,具有15/15/15/pt(1pt=1/1000英寸)的基纸/波形/基纸结构。这种容器基本为纸的外、内层和波形芯层。试件S5、试件S6和试件S7是本发明的试件,包括具有图3所示结构的容器壁1。试件S5是10pt泡沫18pt基纸的叠层。S6是20pt泡沫18pt基纸的叠层。S7是30pt泡沫18pt基纸的叠层。
试件S9是一种纸原料,它带有水分吹制(moisture blow)聚乙烯的外部如可从Fort James得到的Perfec TouchTM容器。试件S10是一个18pt纸杯。试件12是一个层压泡沫的18pt基,带有20pt聚乙烯泡沫。试件14是18pt纸,带有37pt套筒,在外部涂有Micro PearlTM。试件S16是18pt纸,带有20pt层压的聚乙烯泡沫。
用不同的试件进行了测试以便在若干测试反复进行后确定保持时间。在许多测试结果中使用一个控制测试人以保持数据的统一性。在替代测试中,使用了若干不同的控制测试人。
表格1提供在浇入温度为90℃下,用230ml水进行的绝热杯保持时间研究的实验测试结果。表格1涉及各试件的测试结果。在每次测试后用周围环境的水冲洗。
上述的本发明显然能够以许多方式加以变化,而这种变化并不认为是超出本发明的精神和范围,本专业技术人员显然懂得,所有这种变化应包含在权利要求书的范围内。

Claims (21)

1.一种绝热饮料容器原料,所述原料具有一个最内表面和一个最外表面,所述原料包括:
一个纸原料层,具有一个内表面和一个外表面,所述纸原料层的所述外表面构成所述原料的最外表面;
一个沿所述纸原料层的所述内表面设置的泡沫层,所述泡沫层是用高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯或取向聚丙烯形成的热层压泡沫;以及
一个聚乙烯障碍膜层,沿纸原料层的内表面设置并与所述泡沫层和所述纸原料层连续、直接地接触,其中泡沫层构成所述原料的所述最内表面。
2.如权利要求1所述的绝热饮料容器原料,其特征在于:还包括夹置在所述纸原料和所述聚乙烯泡沫层之间的聚乙烯膜层。
3.如权利要求1所述的绝热饮料容器原料,其特征在于:所述纸原料具有大于或等于10密耳且小于或等于26密耳的厚度。
4.一种绝热饮料容器原料,所述原料具有一个最内表面和一个最外表面,所述原料包括:
一个纸原料层,具有一个内表面和一个外表面,所述纸原料层的所述外表面构成所述原料的最外表面;
一个沿所述纸原料层的所述内表面设置的泡沫层,其中所述泡沫层是用高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯或取向聚丙烯形成的热层压泡沫;
一个第一聚乙烯障碍膜层,沿纸原料层的内表面设置并与所述泡沫层和所述纸原料层连续、直接地接触;以及
一个第二聚乙烯障碍膜层,所述泡沫层夹置在沿所述纸原料层的内表面设置的所述第一聚乙烯障碍膜层和所述第二聚乙烯障碍膜层之间。
5.如权利要求1所述的绝热饮料容器原料,其特征在于:所述泡沫层借助熔化挤压、层压或泡沫挤压间接地附着在所述纸原料层上。
6.如权利要求2所述的绝热饮料容器原料,其特征在于:还包括夹置在所述泡沫层和所述纸原料层之间的绝热涂层。
7.一种绝热饮料容器,它包括:
一个具有侧部的容器壁,围绕一个饮料容纳空间并具有一个最内表面和一个最外表面;以及
一个沿下部的侧部接合所述容器壁的底部;
一个沿所述侧部接合所述容器壁的底部,其中所述容器壁还包括:
一个构成所述容器壁的最外表面的纸原料层;
一个薄的聚乙烯障碍膜层,布置在所述纸原料层和所述饮料容纳空间之间并构成所述容器壁的所述最内表面;以及
一个热层压泡沫层,所述泡沫层沿纸原料层的内表面布置,与所述聚乙烯障碍膜层和所述纸原料层连续、直接地接触。
8.如权利要求7所述的绝热饮料容器,其特征在于:所述泡沫层是用高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯或取向聚丙烯形成的。
9.如权利要求7所述的绝热饮料容器,其特征在于:还包括一个夹置在所述泡沫层和所述纸原料层之间的涂层。
10.一种生产绝热饮料容器的方法,该方法包括以下步骤:
提供一纸杯坯,该纸杯坯具有一个包围一个饮料容纳空间的容器壁、一个底部和一个沿所述容器壁的外表面布置的纸原料层;
在发泡前将发泡剂混入聚合物,然后使聚合物发泡成一个泡沫层;以及
将泡沫层附着在所述纸杯坯上。
11.如权利要求10所述的生产绝热饮料容器的方法,其特征在于:所述泡沫层是在纸杯坯内表面上形成的,所述方法还包括以下步骤:
将一个聚乙烯膜层施加在所述泡沫层和所述纸原料层之间的位置上。
12.如权利要求10所述的生产绝热饮料容器的方法,其特征在于还包括以下步骤:
将一绝热涂层施加在所述泡沫层和所述纸原料层之间的位置上。
13.如权利要求10所述的方法,其特征在于:所述泡沫层在所述纸杯坯的内表面上形成,所述方法还包括以下步骤:
将一聚乙烯膜层施加在一个将所述泡沫层夹置在所述膜层和所述纸原料层之间的位置上。
14.如权利要求10所述的生产绝热饮料容器的方法,其特征在于:所述泡沫层是用高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯或取向聚丙烯形成的层压、熔合或挤压的泡沫。
15.如权利要求13所述的生产绝热饮料容器的方法,其特征在于:所述膜层是用高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯或取向聚丙烯形成的层压、熔合或挤压的泡沫。
16.一种绝热饮料容器套筒,它包括:
一个无底部容器壁,具有围绕一饮料容纳空间的侧壁,该侧壁具有一个最内表面和一个最外表面;
一个形成所述侧壁的最外表面的纸原料层;
一个沿所述纸原料层内表面设置的热层压泡沫层;以及
一个聚乙烯障碍膜层,沿所述纸原料层内表面设置,与所述泡沫层和所述纸原料层连续、直接地接触,其中所述泡沫层构成所述套筒的最内表面。
17.一种绝热饮料容器套筒,它包括:
一个无底部容器壁,具有围绕一饮料容纳空间的侧壁,该侧壁具有一个最内表面和一个最外表面;
一个构成所述侧壁的最外表面的纸原料层;
一个沿所述纸原料层内表面设置的热层压泡沫层;
一个第一聚乙烯障碍膜层,沿所述纸原料层内表面设置,与所述泡沫层和所述纸原料层连续、直接地接触,其中所述泡沫层构成所述套筒的最内表面;以及
一个第二聚乙烯障碍膜层,所述泡沫层夹置在所述第一和第二聚乙烯障碍膜层之间。
18.如权利要求16所述的绝热饮料容器套筒,其特征在于:所述纸原料具有大于或等于2密耳且小于等于10密耳的厚度。
19.如权利要求16所述的绝热饮料容器套筒,其特征在于:所述泡沫层是用高密度聚乙烯、低密度聚乙烯、线性低密度聚乙烯或取向聚丙烯形成的。
20.如权利要求19所述的绝热饮料容器套筒,其特征在于:所述泡沫层借助熔化挤压、层压或泡沫挤压附着在所述纸原料层上。
21.如权利要求20所述的绝热饮料容器套筒,其特征在于还包括:
一个夹置在所述泡沫层和所述纸原料层之间的中间层;以及
一个印刷层,所述印刷层构成所述饮料容器套筒的第一外表面,所述泡沫层构成所述饮料容器套筒的第二外表面,其中所述印刷层是用具有高质量图形可印刷性能或具有纹理表面的材料制成的。
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