CN1668456A - 层压材料、层压材料的生产方法、层压材料的热封方法和包装容器 - Google Patents

层压材料、层压材料的生产方法、层压材料的热封方法和包装容器 Download PDF

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Publication number
CN1668456A
CN1668456A CNA038168952A CN03816895A CN1668456A CN 1668456 A CN1668456 A CN 1668456A CN A038168952 A CNA038168952 A CN A038168952A CN 03816895 A CN03816895 A CN 03816895A CN 1668456 A CN1668456 A CN 1668456A
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layer
supporting layer
laminated material
rolling
container
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CN1292895C (zh
Inventor
菊池英世
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Tetra Laval Holdings and Finance SA
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Tetra Laval Holdings and Finance SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • 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
    • B29C65/3656—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
    • 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
    • B29C65/366—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 coating or being printed, e.g. being applied as a paint or forming a printed circuit
    • 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
    • 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
    • B29C65/3672—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 composition of the elements heated by induction which remain in the joint
    • B29C65/3676—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 composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—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 composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/70—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
    • B29C66/72—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
    • B29C66/723—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
    • B29C66/7232—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
    • 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
    • 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
    • B29C66/70—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
    • B29C66/72—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
    • B29C66/723—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
    • B29C66/7232—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
    • B29C66/72327—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 natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract

一种用于无菌包装和冷藏包装中的层压材料，即使在不同的包装系统中也可通过不同包装系统的一些部分的转换或转移来实现整个包装系统的有效运行/使用/操作，从而能够节约能量和材料并降低生产成本；一种生产该层压材料的工艺；一种热封该层压材料的方法；以及一种包装容器。层压材料是用于包装容器的卷式层压材料，其包括支撑层(1)和热塑性最内层(3)。在支撑层(1)和热塑性最内层(3)之间的通过高频感应加热来进行热封以形成容器的区域处设有导电层(2)，使得由感应加热所产生的热量可被传递到最内层上。导电层(2)包括金属导电材料的薄膜/成形层。

Description

层压材料、层压材料的生产方法、层压材料的热封方法和包装容器
技术领域
本发明涉及到层压材料、层压材料的生产方法、层压材料的热封方法和包装容器。
背景技术
已经知道了用于包装容器的卷式(web-form)层压材料，其包括支撑层和热塑性最内层，其中在支撑层和热塑性最内层之间的通过高频感应加热来进行热封以形成容器的区域处层压了炭黑导电层(例如如JP-B No.63-222所述)。在如图1所示的层压材料中包括有支撑层、热塑性最内层以及作为它们之间的中间层的炭黑导电层。
例如在JP No.2694286中介绍了一种包装机，其中设置了可将用于高频感应加热的铝箔带连接到待热封的卷式层压材料的一部分上的连接装置，以便通过加热器的高频线圈来对铝箔带进行高频感应加热。
用于液态食品的包装用纸制容器分成可在常温下储存的无菌包装，以及牌冷藏配给状态下的冷藏包装如牛奶容器。通常采用各自的包装用层压材料来生产单独的无菌包装和冷藏包装，并借助于单独的充填和包装机通过单独的密封方法来充填和包装液态食品。
然而，即使对无菌包装和冷藏包装的不同包装系统来说，应当通过不同包装系统的一些部分的转换或转移来实现整个包装系统的有效运行/使用/操作，这还能够节约能量和材料，并且降低生产成本。
发明公开
本发明的目的是提供一种能够解决上述问题的层压材料、该层压材料的生产方法、该层压材料的热封方法和包装容器。
根据本发明的层压材料和包装容器是用于包装容器的卷式层压材料，其包括支撑层和热塑性最内层，其中在支撑层和热塑性最内层之间的通过高频感应加热来进行热封以形成容器的区域处层压了导电层，使得由感应加热所产生的热量可被传递到最内层上，该导电层包括主要包括金属导电材料的薄膜/成形层。
本发明中的薄膜/成形层意味着它不包括金属箔如铝箔和钢箔，而是指通过气相沉积、电镀、印刷等步骤所形成的层/膜。
因此，即使对无菌包装和冷藏包装的不同包装系统来说，也可通过不同包装系统的一些部分的转换或转移来实现整个包装系统的有效运行/使用/操作，这还能够节约能量和材料，并且降低生产成本。
附图简介
图1是根据本发明一个实施例的卷式层压材料的一部分的截面视图。
图2是根据本发明一个实施例的卷式层压材料的一部分的平面图。
图3是显示了在本发明一个实施例中的层压材料的连接的平面图。
图4是在本发明中使用的包装和充填机的示意图。
图5是在本发明中使用的充填机的横向密封装置的示意图。
实施发明的最佳方式
下面将详细地描述本发明的实施例。
根据本发明权利要求1所述的本发明的层压材料是用于包装容器的卷式层压材料，其至少包括支撑层和热塑性最内层，其中，
在支撑层和热塑性最内层之间的通过高频感应加热来进行热封以形成容器的区域处层压了导电层，使得由感应加热所产生的热量可被传递到最内层上，和
该导电层是主要包括金属导电材料的薄膜/成形层。
在本发明的根据权利要求2所述的层压材料中，导电层是导电组合物的印刷层，该导电组合物含有主要包括了金属导电材料的导电填料。
在本发明的根据权利要求3所述的层压材料中，导电层是含有金属导电材料的电镀层。
在本发明的根据权利要求4所述的层压材料中，导电层是设于气相沉积带上的包括金属导电材料的金属气相沉积层。
在本发明的根据权利要求5所述的层压材料中，导电层是包括设于衬底膜内表面上的包括金属导电材料的金属气相沉积层，该衬底膜是层压在支撑层和热塑性最内层之间的气相沉积膜。
在本发明的根据权利要求6所述的层压材料中，导电层是包括设于衬底膜外表面上的包括金属导电材料的金属气相沉积层，该衬底膜是层压在支撑层和热塑性最内层之间的气相沉积膜。
本发明的根据权利要求7所述的生产层压材料的方法是一种生产用于包装容器的卷式层压材料的方法，该层压材料至少包括支撑层和热塑性最内层，该方法包括提供用于支撑层的多个材料卷，从材料卷中连续地递送出卷式支撑层，将含有导电填料的导电组合物的导电层直接或间接地印刷到支撑层内表面上的通过高频感应加热来进行热封以形成容器的区域处，将容器图案间接或直接地印刷到卷式支撑层的外表面上，在卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层，然后将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式支撑层。
本发明的根据权利要求8所述的生产层压材料的方法是一种生产用于包装容器的卷式层压材料的方法，该层压材料至少包括支撑层和热塑性最内层，该方法包括提供用于支撑层的多个材料卷，从材料卷中连续地递送出卷式支撑层，在支撑层内表面上的通过高频感应加热来进行热封以形成容器的区域处形成包括金属导电材料的电镀层，将容器图案间接或直接地印刷到卷式支撑层的外表面上，在卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层，并且将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式支撑层。
本发明的根据权利要求9所述的生产层压材料的方法是一种生产用于包装容器的卷式层压材料的方法，该层压材料至少包括支撑层和热塑性最内层，该方法包括提供用于支撑层的多个材料卷，从材料卷中连续地递送出卷式支撑层，在包括了通过高频感应加热来进行热封以形成容器的区域的支撑层内表面上层压包括有衬底膜和形成于该衬底膜的内表面或外表面上的金属导电材料的金属气相沉积层的气相沉积膜，将容器图案间接或直接地印刷到长卷式支撑层的外表面上，在卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层，并且将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式支撑层。
本发明的根据权利要求10所述的热封层压材料的方法包括：提供卷式层压材料，该卷式层压材料是用于包装容器的至少包括支撑层和热塑性最内层的层压材料，其中在支撑层和热塑性最内层之间的通过高频感应加热来进行热封以形成容器的区域处层压了导电层，以便使由感应加热所产生的热量可被传递到最内层上，该导电层是通过印刷含有导电填料的导电组合物所形成的印刷层，或者是包括有金属导电材料的电镀层；将卷式层压材料成形为管状形状，并且沿着纵向方向进行纵向密封；在该层压材料管中填充液态食品；通过在已填充管的横向上的每一预定间隔处进行高频感应加热来形成热封区域；以及切割各密封区域的中心，从而形成单个的容器。
本发明的根据权利要求11所述的包装容器是由层压材料形成的包装容器，该层压材料至少包括支撑层和热塑性最内层，其中在通过高频感应加热来进行热封以形成容器的区域处形成了主要包括金属导电材料的薄膜/成形层的导电层，最内层通过感应加热所产生的热量而熔化或软化，从而形成了具有相对的软化或熔化的最内层的密封区域。
具有上述构造的本发明具有下述功能。
根据本发明的用于包装容器的卷式层压材料为细长的条状形式(卷状形式)，其能够形成多个容器，并且能够在高速下连续地填充和生产包装容器。
在本发明中，支撑层提供了具有较高机械强度的包装容器和层压材料，并且可以保持和支撑其形状和形式等。热塑性最内层也是用于容器壁的最内层，并且与液态食品直接接触，从而可防止液体相对于容器支撑层的渗透/润湿。另外，最内层在热封中被热量熔化和软化，以形成密封区域。
导电层是主要包括金属导电材料的薄膜/成形层。薄膜/成形层的字面意思是指它不包括金属箔如铝箔和钢箔，而是通过气相沉积、电镀、印刷等步骤所形成的层/膜。由于导电层具有导电性，当在外部线圈上施加高频电流时，在导电层中就会因高频感应而产生感应电流，因阻抗所导致的热量熔化并密封了相邻最内层的塑料材料(热塑性材料/树脂)。也就是说，在本发明中，导电层在容器成形时通过高频感应加热而被感应式加热，所产生的热量被传递到最内层上，热塑性最内层通过该热量而被加热、熔化和软化。在加热部位处形成了热封区域。
在本发明一个优选实施例中，导电层是通过印刷导电组合物而形成的印刷层，该导电组合物包括主要包括金属导电材料的导电填料。
在本发明中使用的导电填料例如包括金属粉末如铁、铜、黄铜、锌、铅、钛、铝、不锈钢、钨及其合金等、金、银、镀银的铜粉末、银铜复合粉末、银铜合金、非晶态铜、镍、铬、钯、铝、钼或铂，包覆上这些金属的无机粉末，金属氧化物如氧化银或氧化铟的粉末，包覆上这些金属氧化物的粉末，金属纤维，碳纤维等，炭黑，石墨等。然而，应当根据具体应用等来正确地选择它们。
在本发明的一个优选实施例中，在这些导电材料中优选银，这是因为它的导电性高，并且因氧化而导致的阻抗值增加较小。从减轻重量的角度来看，优选炭黑或石墨。另外，在避免出现黑点时优选使用金属粉末或金属薄片。另外，可以一起使用这些导电填料中的两种或多种。
导电材料的形状可以是颗粒状、球形、片状、鳞状、板状、枝状或立方形中的任一种。考虑到导电材料的相互接触以及导电膏的流动性，优选采用枝状、鳞状或片状的形状。
本发明导电层中的导电材料的含量为导电膏的5-95％重量。在导电材料的含量超过95％重量时，通过使用导电膏所形成的涂膜变得脆弱，并且导电性下降。在导电材料的含量小于5％重量时，无法得到足够的导电率。导电材料的含量优选为60-90％重量。
在本发明的一个优选实施例中，导电层是含有金属导电材料的电镀层。
该实施例中的用于电镀的材料可以包括一些金属，例如铁、铜、黄铜、锌、铅、钛、铝、不锈钢、钨及其合金、金、银、银铜合金、非晶态铜、镍、铬、钯、铝、钼或铂。在本发明的一个优选实施例中，在这些导电材料中优选银，这是因为它的导电性高，并且因氧化而导致的阻抗值增加较小。电镀方法可包括各种方法，例如包括无电电镀法，可以根据具体应用来正确地选择和变更。
在本发明的优选实施例中，导电层是设于气相沉积带上的包括金属导电材料的金属气相沉积层。
在该实施例中，可以使用通过将金属如金属铝、铝合金等真空蒸发到例如由聚乙烯或聚酯形成的衬底膜的外表面上而得到的气相沉积带。对于金属气相沉积的方法和气相沉积层的厚度而言，可以采用各种方法。例如，气相沉积方法可以使用真空气相沉积法、溅射法和等离子法等。
气相沉积带因气相沉积的原因而层厚较小，并且与铝箔带或铝箔的复合带相比，其柔韧性和操作性均非常好。因此，气相沉积带也可在高速包装和充填机中使用。
在本发明的一个优选实施例中，导电层是设于衬底膜内表面上的包括金属导电材料的金属气相沉积层，该衬底膜为层压在支撑层和热塑性最内层之间的气相沉积膜。
在该实施例中，用于包装容器的卷式层压材料的层构造从外侧到内侧包括支撑层/气相沉积膜(衬底膜/金属气相沉积层)/热塑性最内层。在该实施例中，金属气相沉积层设置在内侧上。
该实施例的优点是，气相沉积膜不仅可层压在通过高频感应加热来进行热封以形成容器的区域处，而且还可基本上层压在层压材料的整个表面上。因此，本发明中的导电层成形和阻挡层成形可同时地进行，这是通过在层压材料的生产工序中层压气相沉积膜而非铝箔的传统层压物(层压层)来实现的。
在本发明的一个优选实施例中，导电层是设于衬底膜外表面上的包括金属导电材料的金属气相沉积层，该衬底膜为层压在支撑层和热塑性最内层之间的气相沉积膜。
在该实施例中，用于包装容器的卷式层压材料的层构造从外侧到内侧包括支撑层/气相沉积膜(金属气相沉积层/衬底膜)/热塑性最内层。在该实施例中，金属气相沉积层设置在气相沉积膜的外侧上。
该实施例的优点是，气相沉积膜不仅可层压在通过高频感应加热来进行热封以形成容器的区域处，而且还可以如上述实施例那样基本上层压在层压材料的整个表面上。因此，导电层的成形和阻挡层的成形可同时地进行，这是通过在层压材料的生产中层压气相沉积膜来实现的。
另外，通过在衬底膜中添加白色掩蔽剂，就可以遮蔽住金属气相沉积层的金属光泽。
在本发明优选实施例中的生产卷式层压材料的方法中，首先提供用于支撑层的多个材料卷。
从材料卷中连续地递送出卷式支撑层，在支撑层内表面上的通过高频感应加热来进行热封以形成容器的区域处直接或间接地印刷含有导电填料的导电组合物的导电层。导电组合物在印刷时呈膏状，这种膏可涂覆一次或多次以进行印刷。可根据膏状物的粘性或涂覆步骤的次数来控制导电层的厚度等。
然后，对于卷状物而言，在印刷步骤中将容器图案间接或直接地印刷到卷式支撑层的外表面上。这里，用语“间接或直接地”指还可在图案印刷层和支撑层表面之间层压塑性层压层、薄膜层、粘合层或结合层。
在卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层。结果便形成了一个或多个最外层和最内层。另外，为了便于中间步骤中的容器成形，可以在层压材料上选择性地形成格线(折痕)。
在该实施例中，将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式支撑层。所得的卷状物作为卷筒来储存。另外，可以不经储存而连续地供应给下游步骤。在这种方法中，该步骤可在印刷导电层的步骤之前和之后、在容器图案的印刷步骤之前和之后、以及在形成最内层和最外层的步骤之前和之后进行。
在本发明优选实施例中的生产卷式层压材料的方法中，提供用于支撑层的多个材料卷。
然后从材料卷中连续地递送出卷式支撑层，在支撑层内表面上的通过高频感应加热来进行热封以形成容器的区域处形成包括金属导电材料的电镀层，将容器图案间接或直接地印刷到卷式支撑层的外表面上，在卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层，将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式供应层。
例如，电镀层可通过无电电镀来形成。在无电电镀中，将可溶于溶剂(通常是水)的含有待沉淀金属的化合物和还原剂溶解于液体中，将衬底浸入到该液体中，以便使金属沉淀于衬底表面上。
在本发明优选实施例中的生产卷式层压材料的方法中，提供用于支撑层的多个材料卷，从材料卷中连续地递送出卷式支撑层，在包括了通过高频感应加热来进行热封以形成容器的区域的支撑层内表面上层压气相沉积膜，该气相沉积膜包括衬底膜和形成于该衬底膜的内表面或外表面上的金属导电材料的金属气相沉积层，将容器图案间接或直接地印刷到较长的卷式支撑层的外表面上，在卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层，将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式支撑层。
该实施例的优点是，气相沉积膜不仅可层压在通过高频感应加热来进行热封以形成容器的区域处，而且可如上所述地基本上层压在层压材料的整个表面上，在层压材料的生产工序中层压气相沉积膜而非铝箔的传统层压物(层压层)，在本发明中可同时进行导电层的成形和阻挡层的成形。
根据本发明的层压材料的热封方法提供了本发明的层压材料，也就是说，卷式层压材料包括支撑层和热塑性最内层，其中在支撑层和热塑性最内层之间的通过高频感应加热来进行热封以形成容器的区域处层压了导电层，使得由感应加热所产生的热量可被传递到最内层上，导电层是通过印刷含有导电填料的导电组合物的印刷层，或者是包括有金属导电材料的电镀层。卷式层压材料通常采用卷筒的形式来储存或传送。
例如，被卷起来的卷式层压材料被装载到包装和充填机中，层压材料从卷筒中递送出，然后被传送到充填机中。传送中的卷式层压材料在被放下的过程中形成为管状形状。对层压材料的纵向进行纵向密封，以便提供没有液体泄漏的液密状态。在通过高频感应加热来进行纵向密封的情况下，热封区域由高频感应加热形成。
液态食品可被完全地充填到层压材料管中。
在充填管横向上的每一预定间隔处通过高频感应加热来形成热封区域，其优选在液面下，并且进行横向密封。然后通过切刀来切割密封区域的中心以形成单个的容器，作为选择，还可以沿着折痕来将其折叠成最终的形状。
下面将参考图1到5来介绍本发明的优选实施例。
(实施例1)
图1显示了作为本发明一个实施例的卷式层压材料的一部分的截面视图。在图1中，层压材料包括由纸、硬纸板、塑料或其复合材料制成的支撑层1，例如由低密度聚乙烯或线型低密度聚乙烯制成的热塑性最内层3，以及层压在支撑层1和热塑性最内层3之间的导电层2，这样，由在通过高频感应加热来进行热封的区域处的感应加热所产生的热量被传递到最内层3上。
导电层是印刷了含有主要包括金属导电材料的导电填料的导电组合物的印刷层，或者是包括有金属导电材料的电镀层。
在本发明中使用的导电填料例如包括金属粉末如铁、铜、黄铜、锌、铅、钛、铝、不锈钢、钨及其合金、金、银、镀银的铜粉末、银铜复合粉末、银铜合金、非晶态铜、镍、铬、钯、铝、钼或铂，包覆上这些金属的无机粉末，金属氧化物如氧化银或氧化铟的粉末，包覆上这些金属氧化物的粉末，金属纤维，碳纤维等，炭黑，石墨等。然而，应当根据具体应用等来正确地选择它们。
在本发明的一个优选实施例中，在这些导电材料中优选银，这是因为它的导电性高，并且因氧化而导致的阻抗值增加较小。从减轻重量的角度来看，优选炭黑或石墨。另外，在避免出现黑点时优选使用金属粉末或金属薄片。另外，可以一起使用这些导电填料中的两种或多种。
导电材料的形状可以是颗粒状、球形、片状、鳞状、板状、枝状或立方形中的任一种。考虑到导电材料的相互接触以及导电膏的流动性，优选采用枝状、鳞状或球状的形状。
本发明导电层中的导电材料的含量为导电膏的5-95％重量。在导电材料的含量超过95％重量时，通过使用导电膏所形成的涂膜变得脆弱，导电性也下降。在导电材料的含量小于5％重量时，无法得到足够的导电率。导电材料的含量优选为60-90％重量。
图2显示了作为本发明一个实施例的卷式层压材料的一部分的平面视图。在图2中，卷状层压材料4是支撑层和热塑性层的层压材料，其中支撑层包括纸、硬纸板或其复合材料，而热塑性层例如由低密度聚乙烯形成。可从层压材料中得到多个包装容器，其中处于用于在横向上进行横向密封的两个密封区域5之间的部分对应于一个包装容器。在支撑层和热塑性最内层之间层压了导电层，使得由在通过高频感应加热来进行热封的区域5处的感应加热所产生的热量可传递到最内层上。
在通过高频感应加热进行来纵向密封的情况下，还在卷式层压材料的两个端部7处均层压了导电层，以便通过高频感应加热来形成热封区域。
如图2所示，导电层被层压在区域5及其附近处，在通过高频感应加热进行来纵向密封的情况下，导电层还被层压在两个端部7，7处。
(实施例2)
在根据本发明实施例的生产卷式层压材料的方法中，提供了多个纸质材料卷。
从材料卷中连续地递送出卷式支撑层，在支撑层内表面上的通过高频感应加热来进行热封以形成容器的区域5处及其之前和之后的某些区域处，多次重复地(约一到七次)直接或间接地印刷含有导电填料如铝箔粉末或铁粉末的导电组合物的导电层，并且印刷一次或若干次。例如可通过膏状物的粘性或涂覆步骤的次数来控制导电层的厚度等。如果需要提高导电率的话，还可以在油墨中加入可增强导电率的树脂。
对于低速加工来说可以容易地在每一卷筒上进行下述方法，即间断式地充分涂覆导电层(油墨)以便密封卷状层压包装材料的后表面，并在该表面上施加商品图案和折痕(折线)等。然而，对于在高速下进行印刷和折叠来说，必须提供能够在印刷机上在高标准的状态下连续地在后表面处进行密封式印刷的卷式层压材料。
图3是显示了将来自第一卷筒的层压材料4”的后端与来自第二卷筒的层压材料4’的顶端相接合的状态的平面视图。需要在层压材料4”的密封区域5与层压材料4’的密封区域5之间的中间处准确地进行切割。如图3所示，在印刷步骤下游处的层压材料4”的后端与印刷步骤上游处的层压材料卷4’的顶端被切成为具有相同的长度，如图3中的距离A和距离A’所示，这些材料的切割端面接合成暂时固定的状态。导电层的宽度大于得到密封性能所需的宽度，从而提供了可吸收纸的膨胀和收缩的余量。接合在高速印刷期间通过利用自动接合装置而在印刷机中精确地进行，并且可通过大批量柔性版印刷机或凹版印刷机而在大规模生产水平下进行。
如上所述，上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，形成较长的卷式支撑层。所得的卷状物以卷筒形式来储存。或者，它可不经储存而连续地供应给下游步骤。
对于卷状物来说，在印刷步骤中将容器图案间接或直接地印刷到卷式支撑层的外表面上。这里，用语“间接或直接地”指还可层压在图样或图案的印刷层和支撑层表面之间的塑性层压层、薄膜层、粘合层或结合层等。
在卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层。结果便形成了一个或多个最外层和最内层。另外，为了便于中间步骤中的容器成形，可以在层压材料上选择性地形成格线(折线或折痕)。
下面将参考图4和图5来介绍本发明一个实施例中的热封层压材料的方法。图4是在本发明中使用的包装和充填机的示意图。
提供本发明的层压材料，即包括有支撑层、热塑性最内层和导电层的卷式层压材料。将被卷起来的卷式层压材料41装在包装和充填机上，从卷41中递送出层压材料并传送到充填机中。传送中的卷式层压材料通过施加器42而被连接了用于纵向密封的可剥离胶带，然后在被辊44放下时形成为管状形状。在层压材料的纵向上进行纵向密封，并形成为没有液体泄漏的液密状态。在通过高频感应加热来将用于纵向密封的可剥离胶带连接到层压材料的一端上的情况下，在其一端7处也层压导电层。另外，在通过高频感应加热来进行纵向密封的情况下，导电层也被层压到层压材料卷的两个端部7和7上，以便通过高频感应加热来形成热封区域。
液态食品可从充填管45中完全地灌注到层压材料管中。
在这样充填的管的横向上并在每一预定间隔处的液面下通过高频感应加热来形成热封区域，然后通过横向密封装置(显示于图5中)来进行横向密封。
然后，通过切刀等来切割各所述密封区域的中心，以形成单个的容器46，如果需要的话还可以沿着折痕来将各容器折叠成最终的形状。
图5是充填机的横向密封装置的示意图。
如图5所示，两组可垂直运动的横向密封装置14和15通过高频感应加热感应器19和相对夹爪18来在横向上对已填充的层压材料管10施压，对其进行加热和冷却，并在每一预定间隔处通过高频感应加热来形成热封区域S，从而进行横向密封。
然后，通过切刀(未示出)来切割各所述密封区域S的中心，以形成单个的容器。
除了上述实施例中的容器形状以外，本发明的包装容器例如可具有砖形(平行六面体)，以及六方柱形、八方柱形、四面体形、三角顶形等形状。
如上所述，根据本发明，可以得到下述有利的效果。
即使对无菌包装和冷藏包装的不同包装系统来说，由于不同包装系统的一部分可被转换或转移，因此可以实现整个包装系统的有效运行/使用/操作，另外，本发明还能够节约能量和材料，并降低生产成本。
本发明可通过新颖的密封方法来形成密封/接合，并在高速印刷期间通过利用自动接合装置来在印刷机中进行精确地处理，并且可通过大批量柔性版印刷机或凹版印刷性来在大规模生产水平下进行。
根据本发明的方法，可以对根本不含有金属箔层的低成本包装材料实施快速和可靠的密封方法。
工业实用性
根据本发明的纸包装层压材料、纸包装容器可用于盛装液态食品如牛奶、饮料等的包装容器。

Claims (11)

1.一种用于包装容器的卷式层压材料，至少包括支撑层和热塑性最内层，其中，
在所述支撑层和热塑性最内层之间的通过高频感应加热来进行热封以形成容器的区域处层压了导电层，使得由感应加热所产生的热量可被传递到所述最内层上，和
所述导电层是主要包括金属导电材料的薄膜/成形层。
2.根据权利要求1所述的层压材料，其特征在于，所述导电层是导电组合物的印刷层，所述导电组合物含有主要包括了金属导电材料的导电填料。
3.根据权利要求1所述的层压材料，其特征在于，所述导电层是含有金属导电材料的电镀层。
4.根据权利要求1所述的层压材料，其特征在于，所述导电层是设于气相沉积带上的包括金属导电材料的金属气相沉积层。
5.根据权利要求1所述的层压材料，其特征在于，所述导电层是包括设于衬底膜内表面上的包括金属导电材料的金属气相沉积层，所述衬底膜是层压在所述支撑层和热塑性最内层之间的气相沉积膜。
6.根据权利要求1所述的层压材料，其特征在于，所述导电层是包括设于衬底膜外表面上的包括金属导电材料的金属气相沉积层，所述衬底膜是层压在所述支撑层和热塑性最内层之间的气相沉积膜。
7.一种生产用于包装容器的卷式层压材料的工艺，所述层压材料至少包括支撑层和热塑性最内层，所述工艺包括：
提供用于所述支撑层的多个材料卷，
从所述材料卷中连续地递送出卷式支撑层，将含有导电填料的导电组合物的导电层直接或间接地印刷到所述支撑层内表面上的通过高频感应加热来进行热封以形成容器的区域处，
将容器图案间接或直接地印刷到所述卷式支撑层的外表面上，
在所述卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层，然后将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式支撑层。
8.一种生产用于包装容器的卷式层压材料的方法，所述层压材料至少包括支撑层和热塑性最内层，所述方法包括：
提供用于所述支撑层的多个材料卷，
从所述材料卷中连续地递送出卷式支撑层，在所述支撑层内表面上的通过高频感应加热来进行热封以形成容器的区域处形成包括金属导电材料的电镀层，
将容器图案间接或直接地印刷到所述卷式支撑层的外表面上，
在所述卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层，和
将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式支撑层。
9.一种生产用于包装容器的卷式层压材料的方法，所述层压材料至少包括支撑层和热塑性最内层，所述方法包括：
提供用于所述支撑层的多个材料卷，
从所述材料卷中连续地递送出卷式支撑层，在包括了通过高频感应加热来进行热封以形成容器的区域的所述支撑层内表面上层压包括有衬底膜和形成于所述衬底膜的内表面或外表面上的金属导电材料的金属气相沉积层的气相沉积膜，
将容器图案间接或直接地印刷到长卷式支撑层的外表面上，
在所述卷式支撑层的已印刷的外表面和内表面上同时地或顺序地形成相同或不同种类的一个或多个热塑性层，和
将上游处的卷式支撑层的顶端与下游处的卷式支撑层的后端相连，从而形成较长的卷式支撑层。
10.一种热封层压材料的方法，包括：
提供卷式层压材料，所述卷式层压材料是用于包装容器的至少包括支撑层和热塑性层的层压材料，其中，
在所述支撑层和热塑性最内层之间的通过高频感应加热来进行热封以形成容器的区域处层压了导电层，以便使由感应加热所产生的热量可被传递到所述最内层上，所述导电层是通过印刷含有导电填料的导电组合物所形成的印刷层，或者是包括有金属导电材料的电镀层；
将所述卷式层压材料成形为管状形状，并且沿着纵向方向进行纵向密封；
在所述层压材料管中填充液态食品；
通过在已填充管的横向上的每一预定间隔处进行高频感应加热来形成热封区域，和
切割各所述密封区域的中心，从而形成单个的容器。
11.一种由至少包括支撑层和热塑性最内层的层压材料所形成的包装容器，其中，
在通过高频感应加热来进行热封以形成容器的区域处形成了主要包括金属导电材料的薄膜/成形层的导电层，所述最内层通过感应加热所产生的热量而熔化或软化，以形成有相对的软化或熔化的最内层的密封区域。
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