CN116507481A - 具有包括纤维的边沿件的复合纸板容器以及用于生产这种容器的方法 - Google Patents

具有包括纤维的边沿件的复合纸板容器以及用于生产这种容器的方法 Download PDF

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Publication number
CN116507481A
CN116507481A CN202180073540.0A CN202180073540A CN116507481A CN 116507481 A CN116507481 A CN 116507481A CN 202180073540 A CN202180073540 A CN 202180073540A CN 116507481 A CN116507481 A CN 116507481A
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CN
China
Prior art keywords
tubular body
container
rim member
range
rim
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Pending
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CN202180073540.0A
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English (en)
Inventor
M·伦德格伦古德曼
G·格泽留斯
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Gpi System Co ltd
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Gpi System Co ltd
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Publication of CN116507481A publication Critical patent/CN116507481A/zh
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/10—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by form of integral or permanently secured end closure
    • B65D3/12—Flanged discs permanently secured, e.g. by adhesives or by heat-sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/14—Non-removable lids or covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/32—Induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3608—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3612—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3656—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
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    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
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    • B29C66/634—Internally supporting the article during joining using an inflatable core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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Abstract

本公开涉及一种用于散装固体的复合纸板容器。该复合纸板容器(1)包括管状主体(2)，该管状主体于底端(3)、在与该管状主体(2)的顶端(6)处的容器顶部开口(5)相对的容器底部开口(4)上被封闭。管状主体(2)具有面向容器主体(2)的内部的内表面(7)和背向容器主体(2)的内部的外表面(8)。管状主体(2)在纵向方向(L)上延伸。复合容器(1)包括围绕容器顶部开口(5)和/或容器底部开口(4)的边沿件(9)。该边沿件(9)在边沿件(9)的连接部分(11)处沿着管状主体(2)的端部边缘(12)附接到管状主体(2)的端部部分(10)。边沿件(9)的连接部分(11)具有远侧边缘(11a)。管状主体(2)由包括纸箱基底层和热塑性焊接层(14)的层压片材(8)制成。边沿件(9)是包括纸浆纤维(诸如软木纸浆纤维)的模制边沿件(9)。管状主体(2)通过焊接连接到边沿件(9)的连接部分(11)，并且在管状主体(2)的纵向方向(L)上观察时边沿件的远侧边缘(11a)位于距管状主体的端部边缘(12)一段距离处，所述距管状主体的端部边缘(12)的距离至少为4mm，可选地在4mm到50mm的范围内。本公开还涉及一种生产复合纸板容器的方法。

Description

具有包括纤维的边沿件的复合纸板容器以及用于生产这种容 器的方法
技术领域
本公开涉及一种复合纸板容器和一种生产该复合纸板容器的方法。
背景技术
在用于诸如婴儿配方奶粉、烟草、洗涤剂等产品的一次性容器的领域，不断需要通过最大限度地减少一次性容器的资源使用以及使容器可回收来减少此类产品的碳足迹。本文所指的一次性容器是具有由层压片材制成的管状主体的复合容器，该层压片材包括纸箱层，即主要由纤维素纤维制成的层。对于某些容器，容器的上边缘和下边缘包括连接到包装容器边缘的塑料边沿件。这为包装容器提供了令人愉悦且整洁的外观，并且容器顶部或底部也可以更耐磨。为了提供不含塑料部件的容器，容器的顶部部分和/或底部部分可以可替代地由管状主体的折入端部部分制成。然而，这种包装容器的外观在包装容器的底端处会稍微不那么吸引人并且耐磨性较差。
传统上，纸基材料由于被认为具有较低的形状稳定性并且相较塑料部件而言易损且不耐磨而被认为不太适合用于制造纸板容器的盖子和边沿件。也很难实现这种部件与纸板容器的主体的牢固而紧密的附接以及边沿件与容器盖之间的紧密闭合。
因此，需要为诸如食品之类的敏感商品提供具有改进的可回收性而不牺牲被包装商品的持久性或包装安全性的进一步的包装。
发明内容
上述目的可以利用根据权利要求1所述的复合纸板容器以及通过根据权利要求11所述的制造复合纸板容器的方法来实现。本发明的进一步优点和有利特征在以下描述和从属权利要求中公开。
根据第一方面，本公开涉及一种用于散装固体的复合纸板容器。该复合纸板容器包括管状主体，该管状主体于底端、在与位于管状主体的顶端处的容器顶部开口相对的容器底部开口上方被封闭。管状主体具有面向容器主体的内部的内表面和背向容器主体的内部的外表面。管状主体在纵向方向上延伸。复合容器包括围绕容器顶部开口和/或容器底部开口的边沿件。边沿件在边沿件的连接部分处沿着管状主体的端部边缘附接到管状主体的端部部分。边沿件的连接部分具有远侧边缘。管状主体由包括纸箱基底层和热塑性焊接层的层压片材制成。边沿件是包括纸浆纤维(诸如软木纸浆纤维)的模制边沿件。通过将管状主体的端部部分焊接到边沿件的连接部分而将管状主体连接到边沿件。在管状主体的纵向方向上观察时，连接部分的远侧边缘位于距管状主体的端部边缘一段至少4mm的距离处。
边沿件是包括纸浆纤维的模制边沿件，该模制边沿件可以由95％至100％的诸如软木纸浆纤维(可选地为原生软木纸浆纤维)之类的纸浆纤维构成，可选地由98％至100％的纸浆纤维构成。已开发用于模制应用(诸如模制托盘和泡罩、成型或压花盒等)的此类材料的示例例如在Billerud生产并以Billerud/>销售。类似的材料是Mondi提供的Advantage Formable纸张。
复合纸板容器的管状主体由包括纸箱基底层和内部热塑性焊接层的层压片材制成。本公开涉及的复合纸板包装容器意在用于存放湿敏性散装固体，而且常规上不意在存放于诸如冰箱之类的冷却空间中，进而由此不需要外部聚合物树脂(诸如聚乙烯)层。然而，这种类型的复合纸板容器的管状主体往往设置有诸如清漆之类的外部涂覆成分，以增加耐磨性以及提供外观令人愉悦的包装容器。
希望为诸如食品产品之类的敏感商品提供具有改进的可回收性而不牺牲被包装商品的持久性或包装安全性的包装。然而，由于边沿件是包括纸浆纤维的模制边沿件，因此与常规塑料边沿件相比，该结构的柔性会较低，并且还会具有更为不规则的表面，这会降低边沿件与管状纸板主体之间的密封紧密性。因此，被包装商品的持久性或包装安全性会因为可能存在空气和/或湿气穿过管状主体与边沿件之间的空间的风险而降低。然而，本发明人出人意料地发现，通过为边沿件提供相距管状主体的端部边缘在纵向方向上延伸至少4mm的连接部分并将该边沿件焊接到设置有具有热塑性焊接层的内层的管状主体，可以实现令人满意的密封紧密性，从而允许对诸如食品之类的敏感商品进行包装并同时还在易于回收的容器上的底部或上部容器边缘处提供了整洁的外观。已经发现，边沿件具有相距管状主体的端部边缘在纵向方向上延伸至少4mm、可选地相距管状主体的端部边缘在纵向方向上延伸4mm至50mm、可选地相距管状主体的端部边缘在纵向方向上延伸5mm至40mm的连接部分，这通过借助于管状主体的壁为边沿件的最脆弱部分——即该连接部分或多个连接部分——提供支撑而为边沿件提供了增强的形状稳定性。
边沿件附接到管状主体的端部部分并且该管状主体的端部部分可以围绕容器顶部开口或在容器底部开口处。复合纸板容器可以围绕容器顶部开口和容器底部开口均包括根据本公开的边沿件。
边沿件可以是内边沿件，并且复合纸板容器可以还包括盖部件，该盖部件可以是包括诸如软木纸浆纤维之类的纸浆纤维的模制盖部件，并且可以由与内边沿件相同的材料以与内边沿件相同的方式制成。盖部件可以包括盖部和外边沿部，外边沿部和盖部可以模制成一体并通过铰链部分彼此连接。外边沿部可连接到内边沿件。外边沿部件可以以机械方式连接到内边沿件，诸如通过卡扣连接、滑入连接等。
可替代地，边沿件可以是边沿与盖部件的一部分，其中，边沿件与盖部件的边沿部和盖部可以模制成一体，边沿部通过铰链部分连接到盖部，并且其中，边沿部焊接到管状主体。
边沿件可以通过第一连接部分连接到管状主体的内表面或外表面。第一连接部分是围绕管状主体的整个周缘延伸的周向连接部分。第一连接部分沿着整个端部部分连接到管状主体、连接到管状主体的外表面和/或内表面。
边沿件可以在面向管状主体的表面上设置有热塑性层。热塑性层为边沿件提供了更为规则的表面，并由此增强了密封性并提高了被包装货物的持久性或包装安全性。
纸板包装容器可以设置有内部运输封闭装置，该内部运输封闭装置在顶端附接至管状主体的内表面并与所述边沿件相距一段距离，该运输封闭装置可以是可完全或部分地移除的封闭装置。可完全或部分地移除的运输封闭装置可以是气密的或透气的。气密的封闭装置可以由任何适合提供对运输封闭装置所界定的隔室进行气密密封的材料或材料组合制造，所述材料诸如为铝箔、硅涂布纸、塑料膜或其层压物。当存放在包装容器中的散装固体对空气和/或湿气敏感并希望避免所包装的散装固体与环境空气接触时，气密的运输封闭装置是有利的。由于运输封闭装置是可移除的封闭装置，所以对复合纸板容器的可回收性没有影响。
复合纸板容器可以不含塑料部件——诸如塑料的边沿部件、盖部件或底部部件。因此，这种复合纸板容器使得使用者可以在不将塑料部件与管状主体先行分离的情况下回收容器。
边沿件的密度可以在0.2kg/dm3至1.5kg/dm3的范围内，可选地在0.2kg/dm3至1kg/dm3的范围内，可选地在0.4kg/dm3至0.8kg/dm3的范围内。根据本公开的边沿件是模制边沿件，因此需要具有结构耐久性，优选地类似于塑料边沿件的结构耐久性。对于要连接到附加的边沿部的边沿部件——诸如内边沿部件和外边沿部件，这些边沿部件需要具有一定的柔性并且能够在结构上是稳定的。
边沿件可以包括U形或方边型U形的轨道部分，如在剖面图中所见的，该轨道部分包括作为相对的侧壁区段的第一侧壁区段和第二侧壁区段以及面向管状主体的端部边缘的底部区段。底部区段与第一侧壁区段之间的拔模角可以在0度至10度的范围内，可选地在0度至5度的范围之内。由于管状主体的壁由纸板坯料形成并由此具有薄的矩形剖面，所以在0度至10度的范围内或在0度至5度的范围之内的拔模角有助于管状主体、底部区段和第一侧壁区段之间的紧密配合。这有助于被包装商品的耐久性和包装安全性。
第一侧壁区段与第二侧壁区段之间的距离沿着整个第一和第二侧壁区段可以变化小于3mm。这意味着第一侧壁区段与第二侧壁区段具有恒定距离。因此，第一壁区段和第二壁区段可以很好地与管状主体的内表面和外表面对准，进而由此在管状与边沿件的第一侧壁区段和第二侧壁区段之间仅留有小的间隙。
边沿件可以包括L形连接部分，如在剖面图中所见的，该L形连接部分包括第一侧壁区段和面向管状主体的端部边缘的底部区段。边沿件可以具有L形剖面。底部区段与第一侧壁区段之间的拔模角在0度至10度的范围内，或在0度至5度的范围内。第一侧壁区段可以靠着管状主体的内表面施加，并且其中，第一侧壁区段对应于边沿件的连接部分。这有助于L形连接部分与管状主体的端部部分之间的紧密配合，从而提高了被包装货物的持久性和包装安全性。
边沿件可以包括从第一连接部分(诸如从第一侧壁区段)延伸的引导侧壁区段。引导侧壁区段是与第一连接部分相比到管状主体的距离更大的区段。引导侧壁区段可以是倾斜壁区段，当从管状主体的端部边缘且沿管状主体的纵向方向观察时，该倾斜壁区段至管状主体的距离增加。由于边沿件是由纸浆纤维制成的，因此该结构相较塑料边沿件更脆弱且柔性更小，并且可以在边沿件与管状纸板主体之间附加地产生更大的摩擦。为了降低在将边沿件附接到管状主体时损坏边沿件或边缘部分的风险，边沿件可以包括从第一侧壁区段延伸的引导侧壁区段。当边沿件包括供管状主体的端部部分插入的U形或方边型U形的轨道部分时，会是有利的。
管状主体可以在层压片材上具有基重为至少15g/m2、诸如在20g/m2至160g/m2的范围内、可选地为35g/m2至140g/m2或40g/m2至120g/m2的热塑焊接层。本发明人已经发现，热塑性焊接层的这种基重提供了与包括纸浆纤维的边沿件的增强的焊接。常规地，边沿件是塑料边沿件，因此便于在塑料边沿件与包括热塑性焊接层的纸板容器之间进行焊接。然而，如果热塑性焊接层具有这样的基重，则可以实现根据本发明的边沿件与管状主体之间的耐用且防潮的改进的密封。
热塑性焊接层可以包括聚乙烯层或由聚乙烯层构成。
热塑性焊接层可以包括分散在其中的金属粉末或包括金属化聚合物。
层压片材可以包括诸如铝箔之类的金属箔层。金属箔层可以布置在纸箱基底层与热塑性焊接层之间。粘合层(诸如热塑性粘合层)可以布置在金属箔层与纸箱基底层之间。金属箔层的厚度可以为5微米至30微米，诸如5微米至15微米，诸如5.5微米至6.5微米。
可用于本文所公开的复合包装容器中的层压主体片材除了如下所公开的强制性结构纸箱基底层和内部热塑性焊接层f)之外，还可以包括一层或多层。如按从外到内的顺序所见的，层压主体片材可以具有以下结构：
a)可选的聚合物涂层，诸如亮漆(laquer)，
b)可选的印刷和/或着色层，
c)纸箱基底层，
d)可选的聚合物粘合层，例如聚乙烯(PE)层，
e)可选的阻挡层，例如铝(Al)箔阻挡层，
f)内部热塑性焊接层，诸如聚乙烯(PE)层。内部热塑性焊接层可以由两个或更多个子层组成，诸如聚乙烯(PE)层和低密度聚乙烯(LDPE)层。子层可以共挤出成型而形成内部聚合物层，或者可以形成为层压在一起的单独的膜。
根据第二方面，本公开涉及一种生产根据前述权利要求中任一项的用于散装固体的复合纸板容器的方法，该方法包括以下步骤：
a)将包括纸板基底层和热塑性焊接层的纸板层压片材弯曲成管，该管具有纵向方向和垂直于该纵向方向的径向方向，通过接合纸板材料的搭接或邻接侧边缘而在纵向方向上闭合该管，从而形成管状主体，该管状主体具有面向管状主体的内部的内表面和背向管状主体的内部的外表面；
b)使所述管具有预定的横截面形状；
c)于底端、在与管状主体的顶端处的容器顶部开口相对的容器底部开口上方封闭管状主体；
d)将诸如软木纸浆纤维之类的纸浆纤维提供到模制工具中，从而形成包括纸浆纤维的三维形状的边沿部件，该边沿件包括具有远侧边缘的连接部分；
e)将边沿件沿着管状主体的端部边缘提供到管状主体的端部部分，使得边沿件围绕容器顶部开口和/或容器底部开口，使得边沿件的连接部分的远侧边缘位于距管状主体的端部边缘一段至少4mm距离处；和
f)将三维成形的容器部件的联接部分通过焊接附接到管状主体的端部部分，从而形成复合纸板容器。
该方法可以包括：步骤d)包括形成边沿件而使得其包括U形或方边型U形的轨道部分，该U形或方边型U形的轨道部分包括第一侧壁区段和第二侧壁区段以及底部区段，并且其中步骤e)包括布置边沿件而使得底部区段面向管状主体的端部边缘。
底部区段与第一侧壁区段之间的拔模角可以在0度至10度的范围内，可选地在0度至5度的范围内。
第一侧壁区段与第二侧壁区段之间的距离沿着第一和第二侧壁区段可以变化小于3mm。这意味着第一侧壁区段与第二侧壁区段之间具有恒定距离，并由此可以与管状主体的内表面和外表面对准，从而在管状主体与边沿件的第一侧壁区段和第二侧壁区段之间仅留有小的间隙。
边沿件的密度可以在0.2kg/dm3至1.5kg/dm3的范围内，可选地在0.2kg/dm3至1kg/dm3的范围内，可选地在0.4kg/dm3至0.8kg/dm3的范围内。对于将要连接到附加的边沿部的边沿部件——诸如内边沿部件和外边沿部件，这些边沿部件需要具有一定的柔性并且能够在结构上是稳定的。
附图说明
图1示出了根据本公开的复合纸板容器；
图2示出了纸板坯料；
图3示出了将纸板坯料折叠成管状主体；
图4-5示出了将纸板盘插入到管状主体中从而形成容器底部；
图6示出了模制纸浆纤维来形成边沿与盖部件；
图7示出了包括内边沿部件和外边沿与盖部件的模制边沿件；
图8示出了通过焊接将内边沿部件附接到管状主体；和
图9示出了将外边沿与盖部件附接到内边沿部件并由此形成通过根据本公开的方法制备的复合纸板容器。
具体实施方式
应当理解的是，附图是示意性的并且诸如材料层和容器部件之类的各个部件不一定按比例绘制。
图中所示的复合纸板容器和形成复合纸板容器的方法中的步骤仅作为示例提供，而不应被认为是对本发明的限制。因此，本发明的范围仅由所附权利要求的范围来确定。
图1示出了用于散装固体的复合纸板容器1，该复合纸板容器1包括管状主体2，该管状主体2于底端3、在与管状主体2的顶端6处的容器顶部开口5相对的容器底部开口4上方被封闭。管状主体2具有面向容器主体2的内部的内表面7和背向容器主体2的内部的外表面8。管状主体2沿纵向方向L在底端3与顶端6之间延伸。复合容器1包括围绕容器顶部开口5的边沿件9。边沿件9是模制内边沿件9a，该模制内边沿件9a包括纸浆纤维，诸如软木纸浆纤维。内边沿件9a通过将内边沿件9a的连接部分11沿着管状主体2的端部边缘12焊接到管状主体2的端部部分10而附接到管状主体2。内边沿件9a的连接部分11具有远侧边缘11a，该边沿件以距管状主体的端部边缘12一段距离d设置，该距离d在4mm至50mm的范围内。
复合容器1还包括盖部件，该盖部件包括外边沿部9b和盖部9c。外边沿部9b和盖部9c模制成一体。外边沿部9b通过铰链部分9d连接到盖部9c。外边沿部9b连接到内边沿件9a，外边沿部9b可以通过卡扣功能、滑入连接借助粘合剂或任何其他合适的手段进行连接。盖部件由与内边沿件9a相同的材料制成。
如剖面图所见的，内边沿件9a包括方边型U形的轨道部分13，该轨道部分13包括第一侧壁区段13a和第二侧壁区段13b以及面向管状主体2的端部边缘12的底部区段13c。第一侧壁区段13a对应于内边沿件9a的连接部分11。但是，内边沿件也可以具有L形横截面，其中使第一侧壁区段对应于边沿件的连接部分并且使底部区段布置为面向管状主体2的端部边缘12。
管状主体2由包括纸箱基底层和热塑性焊接层14的层压片材制成。
图2至图9示出了生产用于散装固体的复合纸板容器1的方法。图2示出了包括纸箱基底层和热塑性焊接层14的纸板层压片材2”。层压片材2”具有相对的侧边缘16、17。图3示出了第一步骤a)，其中将纸板层压片材2”弯曲成管2’，管2’具有纵向方向L，并通过接合纸板材料2”的邻接侧边缘16、17而在纵向方向L上闭合管2’，从而形成管状主体2。侧边缘16、17之间的接合处可以由密封条覆盖。可替代地，侧边缘16、17可以搭接着接合。所形成的管状主体2具有面向管状主体2的内部的内表面7和背向管状主体2的内部的外表面8。层压片材的热塑性焊接层14布置在管状主体2的内表面7上。该管成形为具有预定的横截面形状。在图中所示的示例中，横截面形状是具有圆角的改型矩形形状。应当理解的是，管状主体可以具有任何有用的横截面形状，诸如圆形、椭圆形、或者诸如三角形、正方形、五边形等的任何多边形或改型多边形。
图4和图5示出了于底端3、在与管状主体2的顶端6处的容器顶部开口5相对的容器底部开口4上方封闭管状主体2的步骤c)。底部开口4通过在底端3处将纸板底盘18压入管中而被封闭。底盘18具有在纵向方向L上朝向底端3弯折的外周凸缘18a。弯折的外周凸缘18a可以例如通过焊接而附接到管状主体2的内表面7。纸板底盘18可以由包括纸箱基底层和热塑性焊接层的层压片材组成。底部边沿件可以施加到管状主体的底端3，该底部边沿件可以是根据本公开的包括纸浆纤维的模制边沿件并且可以根据本公开通过焊接进行施加或可以以粘合方式附接。
图6示出了形成包括外边沿部9b和盖部9c的盖部件的步骤。模制的外边沿部与盖部通过在模制工具15中提供诸如纸浆液的形式的软木纸浆纤维而形成。模制工具15包括母模制工具部件15a和匹配的公模制工具部件15b，纸浆纤维被压在母模制工具部件15a与公模制工具部件15b之间而形成包括纸浆纤维的三维形状的盖部件。图7中示出的内边沿件9a以对应方式模制。
图7示出了内边沿件9a和盖部件，该盖部件包括模制成一体的外边沿部9b和盖部9c，该外边沿部9b通过两个铰链部分9d连接到盖部9c。
如剖面图所见的，内边沿件9a具有方边型U形的轨道部分13，该轨道部分包括第一侧壁区段13a和第二侧壁区段13b以及将用于面对管状主体2的端部边缘12的底部区段13c。第一侧壁区段13a对应于内边沿件9a的连接部分11。但是，该边沿件也可以等同地具有L形状，其中使第一侧壁区段对应于边沿件的连接部分并且使底部区段将用于面对管状主体2的端部边缘12。底部区段13c与第一侧壁区段13a之间的拔模角α在0度至10度的范围内。
图8示出了通过将内边沿件9a沿着管状主体2的端部边缘12焊接到管状主体2的端部部分10而附接内边沿件9a使得内边沿件9a围绕容器顶部开口5的步骤。在此图中，焊接通过包括感应线圈19a和压挤柱塞19b的焊接单元19进行。
焊接单元19包括具有感应线圈19a的高频感应焊接单元。压挤柱塞19b包括可在未扩展状态与径向扩展状态之间转变的可扩展焊接工具51。
在扩展状态下，由焊接工具51外周缘界定的横截面区域(占用空间)大于在焊接工具51未扩展状态下的横截面区域。
当在焊接工具51处于内边沿件9a的附接位置的情况下将压挤柱塞19b插入到管状主体2中时，焊接工具51转变为扩展状态。
在焊接工具51的扩展状态下，焊接工具51外周缘的边缘部分接触插入到管状主体2中的内边沿件9a，并在该内边沿件9a上施加压力而使得其压靠管状主体2的内部，进而可以通过激活感应线圈19a而被感应焊接到管状主体2的内部。
图9示出了当内边沿件9a附接到管状主体2的端部部分10之时以及通过卡扣配合附接将外边沿部9b与盖部9c附接到内边沿件9a的步骤。

Claims (15)

1.一种用于散装固体的复合纸板容器(1)，该复合纸板容器(1)包括管状主体(2)，该管状主体(2)于底端(3)、在与该管状主体(2)的顶端(6)处的容器顶部开口(5)相对的容器底部开口(4)上方被封闭，所述管状主体(2)具有面向所述容器主体(2)的内部的内表面(7)和背向所述容器主体(2)的内部的外表面(8)，所述管状主体(2)在纵向方向(L)上延伸，所述复合容器(1)包括围绕所述容器顶部开口(5)和/或所述容器底部开口(4)的边沿件(9)，所述边沿件(9)在所述边沿件(9)的连接部分(11)处沿着所述管状主体(2)的端部边缘(12)附接到所述管状主体(2)的端部部分(10)，所述边沿件(9)的所述连接部分(11)具有远侧边缘(11a)，所述管状主体(2)由包括纸箱基底层和热塑性焊接层(14)的层压片材(8)制成，其特征在于，所述边沿件(9)是包括诸如软木纸浆纤维之类的纸浆纤维的模制边沿件(9)，所述管状主体(2)通过焊接而连接到所述边沿件(9)的所述连接部分(11)，并且在所述管状主体(2)的纵向方向(L)上观察时，所述边沿件的所述远侧边缘(11a)位于距所述管状主体的所述端部边缘(12)一段距离处，所述距离为至少4mm，可选地在4mm至50mm的范围内。
2.根据权利要求1所述的复合纸板容器(1)，其中，所述边沿件(9)是内边沿件(9a)，并且所述复合纸板容器(1)包括盖部件，所述盖部件是包括诸如软木纸浆纤维之类的纸浆纤维的模制盖部件，该盖部件包括外边沿部(9b)和盖部(9c)，其中，所述外边沿部(9b)和所述盖部(9c)模制成一体，所述外边沿部(9b)通过铰链部分(9d)连接到所述盖部(9c)，并且其中，所述外边沿部(9b)能够连接到所述内边沿件(9a)。
3.根据权利要求1或2所述的复合纸板容器(1)，其中，所述复合纸板容器(1)不含塑料部件——诸如塑料的边沿部件、盖部件或底部部件。
4.根据前述权利要求中任一项所述的复合纸板容器(1)，其中，边沿件(9)的密度在0.2kg/dm3至1.5kg/dm3的范围内，可选地在0.2kg/dm3至1kg/dm3的范围内，可选地在0.4kg/dm3至0.8kg/dm3的范围内。
5.根据前述权利要求中任一项所述的复合纸板容器(1)，其中，所述边沿件(9)包括U形或方边型U形的轨道部分(13)，所述轨道部分包括第一侧壁区段(13a)和第二侧壁区段(13b)以及面向所述管状主体(2)的所述端部边缘(12)的底部区段(13c)，并且其中，所述底部区段(13c)与所述第一侧壁区段(13a)之间的拔模角(α)在0度至10度的范围内，可选地在0度至5度的范围内。
6.根据权利要求1至4中任一项所述的复合纸板容器(1)，其中，所述边沿件(9)包括L形连接部分，所述L形连接部分包括第一侧壁区段和面向所述管状主体(2)的所述端部边缘(12)的底部区段，并且其中，所述底部区段与所述第一侧壁区段之间的拔模角(α)在0度至10度的范围内，可选地在0度至5度的范围内。
7.根据权利要求5或6所述的复合纸板容器(1)，其中，所述边沿件(9)包括从所述第一侧壁区段(13a)延伸的引导侧壁区段(13d)，所述引导侧壁区段是倾斜壁区段，当从所述管状主体(2)的所述端部边缘(12)且在所述管状主体(2)的纵向方向(L)上观察时，所述倾斜壁区段到所述管状主体的距离增加。
8.根据前述权利要求中任一项所述的复合纸板容器(1)，其中，所述热塑性焊接层(12)包括聚乙烯层或由聚乙烯层组成。
9.根据前述权利要求中任一项所述的复合纸板容器(1)，其中，所述热塑性焊接层(12)在所述层压片材上的基重为至少15g/m2，诸如在20g/m2至160g/m2的范围内，可选地在35g/m2至140g/m2或40g/m2至120g/m2的范围内。
10.根据前述权利要求中任一项所述的复合纸板容器(1)，其中，所述层压片材(8)包括金属箔层。
11.生产根据前述权利要求中任一项所述的用于散装固体的复合纸板容器(1)的方法，该方法包括以下步骤；
a)将包括纸板基底层和热塑性焊接层(14)的纸板层压片材(2”)弯曲成管(2’)，该管(2’)具有纵向方向(L)和垂直于该纵向方向(L)的径向方向(R)，通过接合所述纸板材料(2’)的搭接或邻接的侧边缘(16，17)而在所述纵向方向(L)上闭合所述管(2’)，从而形成管状主体(2)，使所述管状主体(2)具有面向该管状主体(2)的内部的内表面(7)和背向该管状主体(2)的内部的外表面(8)；
b)使所述管(2)具有预定的横截面形状；
c)于底端(3)、在与所述管状主体(2)的顶端(6)处的容器顶部开口(5)相对的容器底部开口(4)上方封闭所述管状主体(2)；
d)将诸如软木纸浆纤维之类的纸浆纤维提供到模制工具(15)中，从而形成包括纸浆纤维的三维形状的边沿部件(9)，该边沿件(9)包括具有远侧边缘(11a)的连接部分(11)；
e)将所述边沿件(9)沿着所述管状主体(2)的端部边缘(12)提供到所述管状主体(2)的端部部分(10)，使得所述边沿件(9)围绕所述容器顶部开口(5)和/或所述容器底部开口(4)，使得在所述管状主体(2)的所述纵向方向(L)上观察时所述边沿件的连接部分(11)的远侧边缘(11a)位于距所述管状主体的所述端部边缘(12)一段距离处，所述距离在至少4mm的范围内，可选地在4mm至50mm的范围内；和
f)将三维成形的所述容器部件(3)的所述连接部分(11)通过焊接附接到所述管状主体(2)的所述端部部分(10)，从而形成所述复合纸板容器(1)。
12.根据权利要求11所述的方法，其中，步骤d)包括形成包括U形或方边型U形的轨道部分(13)的所述边沿件(9)，该U形或方边型U形的轨道部分(13)包括第一侧壁区段(13a)和第二侧壁区段(13b)以及底部区段(13c)，并且其中，步骤e)包括布置所述边沿件(9)而使得所述底部区段(13c)面向所述管状主体(2)的所述端部边缘(12)。
13.根据权利要求11所述的方法，其中，所述边沿件(9)包括L形连接部分，所述L形连接部分包括第一侧壁区段和面向所述管状主体(2)的所述端部边缘(12)的底部区段，并且其中，所述底部区段与所述第一侧壁区段之间的拔模角(α)在0度至10度的范围内，可选地在0度至5度的范围内。
14.根据权利要求12或13所述的方法，其中，所述底部区段(13c)与所述第一侧壁区段(13a)之间的拔模角(α)在0度至10度的范围内，可选地在0度至5度的范围内。
15.根据权利要求11-14中任一项所述的方法，其中，所述边沿件(9)的密度在0.2kg/dm3至1.5kg/dm3的范围内，可选地在0.2kg/dm3至1kg/dm3的范围内，可选地在0.4kg/dm3至0.8kg/dm3的范围内。
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