CN113911469A - 用于横向密封的电感器、包括该电感器的包装机及其方法 - Google Patents
用于横向密封的电感器、包括该电感器的包装机及其方法 Download PDFInfo
- Publication number
- CN113911469A CN113911469A CN202110773989.XA CN202110773989A CN113911469A CN 113911469 A CN113911469 A CN 113911469A CN 202110773989 A CN202110773989 A CN 202110773989A CN 113911469 A CN113911469 A CN 113911469A
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- Prior art keywords
- sealing
- jaw element
- tube
- inductor
- sealing surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
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- 238000004806 packaging method and process Methods 0.000 title claims description 30
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- 235000013305 food Nutrition 0.000 claims abstract description 49
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- 238000002360 preparation method Methods 0.000 claims description 2
- 238000012536 packaging technology Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 36
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- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
- B65B9/2049—Package shaping devices acting on filled tubes prior to sealing the filling opening
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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
- 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
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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
- 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
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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
- B29C66/70—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7128—Bags, sacks, sachets
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- Engineering & Computer Science (AREA)
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- Package Closures (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
Abstract
本发明涉及包装技术,提供了一种用于横向密封装有食品的包装材料的管的电感器,电感器包括:包括第一密封表面和第二密封表面的主体,第一密封表面和第二密封表面布置成在密封状态期间面对包装材料;设置在主体中的凹部,凹部用于在切割状态期间接收刀具,第一密封表面和第二密封表面位于凹部的相对侧;以及设置在主体中的电导体装置,电导体装置用于在密封状态期间在包装材料中感应涡流,第一密封表面和第二密封表面中的每个都包括顶部部分、位于凹部和顶部部分之间的内密封部分、和位于顶部部分和电感器的外边缘之间的外密封部分,并且内密封部分朝向凹部倾斜,外密封部分朝向外边缘倾斜。
Description
技术领域
本发明涉及包装技术。更具体地,涉及一种用于横向密封装有食品的包装材料的管的电感器。还涉及一种用于生产食品包装的包装机及其方法。
背景技术
如今,生产装有液体食品的纸盒包装,例如装有牛奶的利乐砖TM(Tetra BrikTM)包装,是总所周知的。利乐砖TM包装机是卷轴进料包装机(有时也称为卷轴进料填充机)的一个示例。在卷轴进料包装机中,在卷轴上提供给包装机的包装材料幅材形成为管并提供纵向密封。在已形成管并提供纵向密封之后,管被产品填充。从管的下端连续进行横向密封。与进行横向密封相关,管的下端被切断,从而形成装有液体产品的包装。随后将这些包装转移到折叠设备,该折叠设备通过使用包装材料中提供的预制折叠线(有时也称为弱化线)将包装折叠成它们的最终形状。
另一种类型的包装机是所谓的坯料进料包装机。与卷轴进料包装机不同的是,在坯料进料包装机中,包装件是逐个制成的。两者之间的另一个区别在于纵向密封不是在包装机中完成的,而是预先完成的。因此,在这种背景下坯料被视为袖状的包装材料片。在坯料包装机中,坯料是竖立的(即展开的),从而形成一个内部空间。在竖立之后,通过在套筒的一端提供横向密封而形成封闭端。在下一步中,将产品填充到套筒中,然后通过提供横向密封来封闭套筒的另一端,从而形成封闭的包装。
为确保产品安全地保存在包装内,应以可靠的方式进行横向密封。提供可靠横向密封的技术已使用多年,但由于速度方面的要求(例如每小时生产的包装数量)、待填充到包装中的产品的不同类型(例如高粘度产品和含有种子和其他类型颗粒的产品)、服务间隔等不断增加,需要改进横向密封技术。
发明内容
本发明的目的是至少部分地克服现有技术的上述一个或多个限制。
根据第一方面,提供了一种用于横向密封装有食品的包装材料的管的电感器。该电感器包括:
主体,其包括第一密封表面和第二密封表面,该第一密封表面和第二密封表面布置成在密封状态期间面对包装材料;
设置在主体中的凹部,该凹部用于在切割状态期间接收刀具,其中第一密封表面和第二密封表面位于凹部的相对侧;以及
设置在主体中的电导体装置,该电导体装置用于在密封状态期间在包装材料中感应涡流,
其特征在于,
第一密封表面和第二密封表面中的每个都包括顶部部分、位于凹部和顶部部分之间的内密封部分、和位于顶部部分和电感器的外边缘之间的外密封部分,并且
其中,内密封部分朝向凹部倾斜,而外密封部分朝向外边缘倾斜,从而使得当第一密封表面和第二密封表面被压向密封带时,保持在管内的食品中的产品被推离管的密封带。
术语″横向密封″在此是指包装材料的管的顶部或底部的密封。
术语″倾斜″在此是指倾斜一定角度。因此,它应该被解释为相对于长度的高度,或者换言之,即高度除以长度。
术语″密封带″在此是指可形成横向密封的管的一部分。
将所公开的电感器用于管的横向密封的优点在于可以实现期望的压力分布。通过具有期望的压力分布,可以从密封区挤出产品,使得没有产品、或至少是减少量的产品可以封装在密封区中。因此,所公开的电感器可以提供更可靠的密封区,其中没有产品可以离开包装并且没有空气可以进入包装。特别地,如果被封装,包含颗粒(例如种子)的食品可能会显着影响横向密封。
所公开的电感器的设计的另一个优点可以是朝向电感器的压力可以减小,这是由于放置在外密封部分之外的相(phase)的影响一一可以提供对包装材料的更温和的处理,并反过来使得可以使用更薄的包装材料或者可以避免包装材料的较少裂纹或其他损坏。
第一密封表面和第二密封表面倾斜的又一个优点是压力梯度可以在管内连续地积累。由于不同的产品可能在例如粘度以及它们是否包含颗粒的方面会有所不同,并且如果包含颗粒,这些颗粒可能具有不同的特性,则不同的产品可能需要不同的措施来避免密封带中的产品残留。通过定制倾斜分布(即密封表面如何倾斜),基于管内保持的产品,可以优化产品的压力梯度积累,这意味着甚至更进一步改进横向密封。
除了改进在密封阶段S中从密封带充分去除产品残留物之外,使密封表面倾斜也对密封质量有积极影响。在密封阶段S期间熔化的聚合物层中也形成压力梯度。这使得与使用平坦表面电感器相比,可以以更精确的方式控制包装材料中的熔化的聚合物如何移动。进而,这使得能够降低在包装材料中具有熔化的聚合物聚集体的风险。换言之,熔化的聚合物可以更有效地分布。另一个积极的效果在于实现可靠的横向密封可以需要更少的聚合物。由于可以以更精确的方式控制在密封阶段S期间熔化的聚合物如何分布,这可能意味着需要更少的聚合物,这从环境角度以及从成本方面都是有利的。
外密封部分长度(OSS-L)可以大于内密封部分长度(ISS-L)。
术语″外密封表面″在此是指位于电感器的顶部部分和外部部分之间的外密封表面的长度。
术语″内密封表面″在此是指位于凹部和顶部部分之间的内密封表面的长度。
电感器可以包括外密封表面的内子部分的内子部分倾斜度,该内子部分倾斜度可以大于外密封表面的外子部分的外子部分倾斜度,其中内子部分可以紧靠顶部部分。
内密封表面可以有恒定的倾斜度。
密封带长度可能小于14毫米。密封带长度小于14毫米的优点在于横向密封所需的包装材料更少,从而提高了成本效率。因此,通过设计电感器使得密封区中存在更少的食品,可以实现改进的总拥有成本。
电导体装置可包括双回路(twin-loop)。
术语″双回路″在此意味着电子导体可以包括第一线圈和第二线圈,即,一个线圈设置在配置为在切割阶段期间接收刀具的凹部的任一侧上。双回路可以包括形成第一线圈和第二线圈的一个相同电路。
根据第二方面,提供了一种用于生产食品包装的包装机。该包装机包括:
卷轴接收器,其布置为接收包装材料的卷轴;
管形成器,其布置为从包装材料形成管;
产品填充设备,其布置为用食品填充管;
横向密封装置,其布置为在管的下部提供横向密封,所述横向密封装置包括第一密封钳元件和第二密封钳元件,其中第一密封钳元件附接到第一臂并且第二密封钳元件附接到第二臂,其中第一臂附接到第一马达装置并且第二臂附接到第二马达装置,
其中第一密封钳元件包括根据前述权利要求中任一项所述的电感器,
其中第二密封钳元件包括砧座,
其中第一马达装置和第二马达装置配置为在下列状态之间移动横向密封装置:
上部打开状态,其中第一臂和第二臂处于上部位置并且第一密封钳元件和第二密封钳元件分离;
上部密封状态,其中第一臂和第二臂处于上部位置并且第一密封钳元件和第二密封钳元件从相对侧被压到管上;
下部密封状态,其中第一臂和第二臂处于下部位置并且第一密封钳元件和第二密封钳元件从相对侧被压到管上;以及
下部打开状态,其中第一臂和第二臂处于下部位置并且第一密封钳元件和第二密封钳元件分离,
其中,电感器的上部倾斜表面和下部倾斜表面使得在从上部打开状态到上部密封状态的转变期间将食品从包装材料的密封部分移走。
包装机可配置为生产食品包装,每个食品包装可包含少于200毫升的食品。
包装机的运行速度可能低于每小时20,000个食品包装。
根据第三方面,提供了一种用于生产装有食品的食品包装的方法。该方法包括:
通过使用卷轴接收器接收包装材料的卷轴;
通过使用管形成器从包装材料形成管;
使用产品填充设备将食品填充到管中;
通过使用包括第一密封钳元件和第二密封钳元件的横向密封装置在管的下部横向密封管,其中第一密封钳元件附接到第一臂并且第二密封钳元件附接到第二臂,其中第一臂附接到第一马达装置并且第二臂附接到第二马达装置,其中第一密封钳元件包括用于加热包装材料的电感器,
其中电感器包括:
主体,该主体包括第一密封表面和第二密封表面,该第一密封表面和第二密封表面布置为在密封状态期间面向包装材料;
设置在主体中的凹部,该凹部用于在切割状态期间接收刀具,其中第一密封表面和第二密封表面位于凹部的相对侧;以及
设置在主体中的电导体装置,该电导体装置用于在密封状态期间在包装材料中感应涡流,
其中第一密封表面和第二密封表面中的每个都包括顶部部分、放置在凹部和顶部部分之间的内密封部分、以及放置在顶部部分和电感器的外边缘之间的外密封部分,
其中,内密封部分朝向凹部倾斜,外密封部分朝向外边缘倾斜,
其中第二密封钳元件包括砧座,
其中密封步骤包括以下子步骤:
将横向密封装置置于上部打开状态,其中第一臂和第二臂处于上部位置,并且通过使用第一马达装置和第二马达装置使第一密封钳元件和第二密封钳元件分离;
将横向密封装置置于上部密封状态,其中第一臂和第二臂处于上部位置,并且通过使用第一马达装置和第二马达装置将第一密封钳元件和第二密封钳元件从相对侧压到管上,从而使得当第一密封表面和第二密封表面被压向密封带时,保持在管内的食品中的颗粒被推离管的密封带;
将横向密封装置置于下部密封状态,其中第一臂和第二臂处于下部位置,并且通过使用第一马达装置和第二马达装置将第一密封钳元件和第二密封钳元件从相对侧压到管上;以及
将横向密封装置置于下部打开状态,其中第一臂和第二臂处于下部位置,并且通过使用第一马达装置和第二马达装置使第一密封钳元件和第二密封钳元件分离。
在第二方面中公开的电感器可以包括可以大于内密封部分长度(ISS-L)的外密封部分长度(OSS-L)。
在第二方面中公开的电感器可以包括外密封表面的内部分的内部分倾斜度,该内部分倾斜度可以大于外部密封表面的外部分的外部分倾斜度,其中内部分可以紧靠顶部部分。
内密封表面可以具有恒定的倾斜度。
密封带长度可以小于14毫米。
根据第四方面,提供了一种食品包装。该食品包装可通过以下步骤获得:
通过使用卷轴接收器接收包装材料的卷轴;
通过使用管形成器从包装材料形成管;
使用产品填充设备将食品填充到管中;
通过使用包括第一密封钳元件和第二密封钳元件的横向密封装置在管的下部横向密封管,其中第一密封钳元件附接到第一臂并且第二密封钳元件附接到第二臂,其中第一臂附接到第一马达装置并且第二臂附接到第二马达装置,其中第一密封钳元件包括用于加热包装材料的电感器,
其中电感器包括:
主体,该主体包括第一密封表面和第二密封表面,该第一密封表面和第二密封表面布置为在密封状态期间面向包装材料;
设置在主体中的凹部,该凹部用于在切割状态期间接收刀具,其中第一密封表面和第二密封表面位于凹部的相对侧;以及
设置在主体中的电导体装置,该电导体装置用于在密封状态期间在包装材料中感应涡流,
其中第一密封表面和第二密封表面中的每个都包括顶部部分、放置在凹部和顶部部分之间的内密封部分、以及放置在顶部部分和电感器的外边缘之间的外密封部分,
其中,内密封部分朝向凹部倾斜,外密封部分朝向外边缘倾斜,
其中第二密封钳元件包括砧座,
其中密封步骤包括以下子步骤:
将横向密封装置置于上部打开状态,其中第一臂和第二臂处于上部位置,并且通过使用第一马达装置和第二马达装置使第一密封钳元件和第二密封钳元件分离;
将横向密封装置置于上部密封状态,其中第一臂和第二臂处于上部位置,并且通过使用第一马达装置和第二马达装置将第一密封钳元件和第二密封钳元件从相对侧压到管上,从而使得当第一密封表面和第二密封表面被压向密封带时,保持在管内的食品中的颗粒被推离管的密封带;
将横向密封装置置于下部密封状态,其中第一臂和第二臂处于下部位置,并且通过使用第一马达装置和第二马达装置将第一密封钳元件和第二密封钳元件从相对侧压到管上;以及
将横向密封装置置于下部打开状态,其中第一臂和第二臂处于下部位置,并且通过使用第一马达装置和第二马达装置使第一密封钳元件和第二密封钳元件分离。
食品包装可包括高度为7mm或更小的横向密封翅片(fin)。具有小于14mm的密封带长度使得所生产的包装的密封翅片长度可以小于7mm。
本发明的其他目的、特征、方面和优点将从以下详细描述以及附图中显现。
第二、第三和第四方面的效果和特征在很大程度上类似于以上结合第一方面所描述的那些。关于第一方面提及的实施方案在很大程度上与第二、第三和第四方面兼容。还应注意,除非另有明确说明,否则本发明构思涉及特征的所有可能组合。本发明的进一步适用范围将从以下给出的详细描述中显现。然而,应当理解,虽然表示了本发明的优选实施方案,但所给出的详细描述和具体示例仅作为说明,本领域技术人员将从以下详细描述了解在本发明范围内的各种变化和修改。
因此,应当理解,本发明不限于所描述的设备的特定组成部分或所描述的方法的步骤,因为这样的设备和方法可以改变。在此所使用的术语也只是为了描述具体实施方案的目的而不是限制性的。必须指出,在说明书和所附权利要求中使用的冠词″一(a)″、″一(an)″、″该(the)″和″所述(said)″旨在表示存在一个或多个元件,除非上下文另有明确规定。因此,例如,对″一个单元″或″该单元″的引用可以包括多个设备等。此外,词语″包括(including)″、″包括(comprising)″、″包含(containing)″和类似词语不排除其他元件或步骤。
附图说明
现在通过示例的方式参考所附示意图描述本发明的实施方案,其中
图1是卷轴进料包装机的大体示意;
图2是布置在包装机内的密封装置的更详细的图,该密封装置用于提供横向密封;
图3A-D示出了横向密封装置和密封状态的子状态;
图4A-C从不同的视角示出了电感器;
图5A-C更详细地示出了电感器;
图6示出了包括多个压力分布的线形图;
图7是示出用于生产装有食品的食品包装的方法的流程图。
具体实施方式
图1大体示出了包装机100。在所示示例中,包装机100是卷轴进料纸盒包装机。这种机器的一般原理是从包装材料的卷轴形成幅材102。包装机100可包括用于接收包装材料的卷轴的卷轴接收器(图中未示出)。尽管未示出,但如果为满足食品安全法规需要,可以使用过氧化氢浴、低压电子束(LVEB)设备或能够减少大量不需要的微生物的任何其他装置对幅材102进行灭菌。在灭菌之后,通过使用管形成器,幅材102可以形成为管104。根据一个非限制性示例,管形成器可以是纵向密封设备。当已经形成了管,产品(例如牛奶)可以通过至少部分地放置在管104内的产品管106从产品填充设备进给到管104中。
为了从装有产品的管104形成包装112,可以通过使用密封装置110在管的下端进行横向密封。通常,密封装置110具有两个主要功能一一提供横向密封,即将管104的两个相对侧焊接在一起,使得管104下部的产品(该产品放置在密封装置110下方)与管104(该管104放置在密封装置110上方)中的产品分开,并切断管104的下部,从而形成包装112。或者,替代于所述的在同一装置中提供横向密封和切断下部,切断下部的步骤可以在后续的步骤中由不同的设备进行,或者如果这些包装旨于以多件装形式出售,该步骤也可以由用户进行。将结合图2和图3A-D进一步讨论密封装置110。
参考图2,更详细地示出了密封装置110的一般原理。管104可以从上方进给,因为这使得能够将产品保持在管104内部。密封装置110可以配置为处于第一阶段,密封阶段S。在密封状态S,第一密封元件200和第二密封元件202朝向彼此移动,使得管104的两个相对侧被压向彼此。将结合图3A-D更详细地讨论密封状态S。
密封装置110可配置为处于后续步骤,在此称为切割阶段C。在切割阶段C中,管104的下部可被切断从而形成包装112。为了提高形成包装的速度,在密封阶段S和切割阶段C期间,密封元件200、202(在此也称为密封钳元件)可以在管进给方向A上与管104一起移动。
为了提供更可控的包装112的形成过程,可以使用所谓的体积形成翼204a、204b。更具体地,通过使用这些,具有圆形横截面的管104可以以受控方式被引导到具有矩形横截面的包装112中。
第一密封元件200可以设置有电感器206,下面将结合图4A-C和图5A-C进行更详细的讨论。在提供横向密封之后,可以使用刀具208切断管104的下部,从而形成包装112。在此示例中,刀具208和电感器206设置在第一密封元件200中,但是其他布置也是可能的。例如,刀具208可以设置在管104的另一侧,在第二密封元件202中,或者切割步骤可以由密封设备下游的单独设备执行。
参考图3A-D,以示例的方式示出了密封状态S的子状态。另外,以示例的方式示出可以作为密封装置110的一部分的横向密封装置300。更具体地,横向密封装置300可用作密封装置110。尽管图3A-D中仅示出了一个横向密封装置300,但包装机100可优选地包括成对工作的两个横向密封装置300。然而,由于两个横向密封装置300可以以相同方式布置,因此图中仅示出了其中之一。
如果使用两个横向密封装置300,则它们可以配置为交替地提供管104的下部的横向密封。该原理从例如由利乐TM(Tetra PakTM)销售的包装机利乐A3 Flex被广泛了解。
横向密封装置300可包括第一密封钳元件302a和第二密封钳元件302b。第一密封钳口元件302a可以附接到第一臂304a。第二密封钳口元件302b可以附接到第二臂304b。第一臂304a可以附接到第一马达装置303a。第二臂304b可以附接到第二马达装置303b。第一马达装置306a和第二马达装置306b可以配置为移动横向密封装置300。第一马达装置306a和第二马达装置306b可以配置为将第一密封钳元件302a和第二密封钳元件302b朝向彼此移动。第一密封钳元件302a可包括用于加热包装材料108的电感器206。第二密封钳元件302b可包括砧座,用于在形成横向密封时提供反压力。管104还可包括密封带,其中可提供横向密封。密封带可包括密封带长度308。优选地,密封带长度308可小于14mm。
图3A图示了处于上部打开状态300A的横向密封装置210。如图所示,第一臂304a和第二臂304b可以处于上部位置并且第一密封钳元件302a和第二密封钳元件302b可以分离。
图3B示出了处于上部密封状态300B的横向密封装置210。如图所示,第一臂304a和第二臂304b可以处于上部位置,并且第一密封钳元件302a和第二密封钳元件302b可以从相对侧被压到管104上,使得管104的两个相对侧被压向彼此。为了提供横向密封,可以通过在包装材料中感应涡流同时将两个相对侧压在一起来提供热量。热量使得包装材料的聚合物层熔化,这又使得聚合物层可用于确保两个相对的侧面在钳被移除后能够彼此附接并保持在一起。当第一密封钳元件302a和第二密封钳元件302b被压到管104上时,从密封带以及电感器的内部和外部密封部分(见图5C)移除食品。换言之,在从上部打开状态300A到上部密封状态300B的上部状态的转变期间,从密封带移除产品,使得没有产品、或至少是减少量的产品可以封装在横向密封,如上所述,这会对横向密封的质量产生负面影响。
图3C示出了处于下部密封状态300C的横向密封装置210。如图所示,第一臂304a和第二臂304b可以处于下部位置,并且第一密封钳元件302a和第二密封钳元件302b可以以与结合图3B讨论的相同的方式从相对侧被压到管104上。
图3D图示了处于下部打开状态300D的横向密封装置。如图所示,第一臂304a和第二臂304b可以处于下部位置并且第一密封钳元件302a和第二密封钳元件302b可以分离。
在处于图3A、3B、3C和3D中描述的状态之后,横向密封装置300可以通过再次重复这些状态而继续。
参考图4A-C,以示例的方式从不同的视角示出了电感器206。电感器206配置为用于如上所述的横向密封管104。电感器206可以安装在横向密封装置300中。优选地,如结合图2和图3A-D所讨论的,电感器206可以安装在第一密封钳元件302a中。使用电感器对包装材料进行横向密封的技术是众所周知的技术。然而,所公开的电感器206与传统电感器的不同之处至少在于电感器206包括异形表面而不是平坦表面。使用所公开的电感器206结合横向密封装置300的目的可以是从包装材料108的密封带中挤出产品。因此,这可以提供更可靠的横向密封,因为没有产品、或者至少是减少量的产品可以封装在密封区内。
参考图4A,以示例的方式从下方示出电感器206。电感器206可以包括主体402。主体402可以设置有突出部404。突出部404可以配置为用于确保电感器206可以正确地安装在包装机100中。电感器206可以进一步包括一个或多个孔406,确保能够正确地安装电感器206。电感器206可以通过使用螺栓或螺丝安装,其中孔406可以配置为接收螺栓或螺丝。因此,突出部404和孔406可以配置为协作以确保可以以正确的方式安装电感器206。另外,将结合图4B进一步讨论,孔306可以配置为固定第一导体312a和第二导体312b。电感器206还可以包括一个或多个入口408,用于允许冷却介质进给到电感器206中。
参考图4B,以示例的方式从侧面透视图示出电感器206。除了图4A中所示的,电感器206还可包括异形表面410,将结合图5A-C更详细地讨论该异形表面410。电感器206还可包括电导体装置(图中未示出)。电导体装置可以设置在主体402中。如结合图2和图3A-D所讨论的,电导体装置可以配置为用于在密封状态S期间在包装材料中感应涡流。电感器206可以包括第一导体412a和第二导体412b。因此,电导体装置可以包括双回路,即两个用于在包装材料中感应涡流的电路。电导体装置可以配置为在密封状态S期间经由第一导体412a和第二导体412b在包装材料中感应涡流。
参考图4C,以示例的方式从上方示出电感器206。图4C示出了主体402、用于以正确方式安装电感器206的孔406和异形表面410的俯视图。
参考图5A-C,以示例的方式示出图4B中所示的电感器206的横截面500。如结合图4A-C所讨论的,电感器206可以包括主体402、突出部404、异形表面410以及第一导体412a和第二导体412b。
参考图5A,主体402还可以包括第一密封表面502a和第二密封表面502b。在密封状态S期间,第一密封表面502a和第二密封表面502b可以布置为面向包装材料。电感器可以进一步包括凹部504。凹部504可以设置在主体402中。如结合图2所讨论的,凹部504可以配置为在切割状态C期间接收刀具208。第一密封表面502a和第二密封表面502b可以放置在凹部504的相对侧上。因此,第一密封表面502a和第二密封表面502b可以关于凹部504对称。如图4C所示,第一密封表面502a、第二密封表面502b和凹部504可以形成异形表面410。
参考图5B,可以通过示例的方式更详细地示出凹部504。另外,图5B还可示出第一密封表面502a和第二密封表面502b的一部分500。第一密封表面502a和第二密封表面502b可以分别设有第一顶部部分506a和第二顶部部分506b。第一顶部部分506a和第二顶部部分506b在此还被称为顶部部分506。第一密封表面502a和第二密封表面502b可以分别设有第一内密封部分508a和第二内密封部分508b。第一内密封部分508a和第二内密封部分508b在此还被称为内密封部分508。如图5C中进一步示出的,内密封部分508可以放置在凹部504和顶部部分506之间。内密封部分508可以朝向凹部504倾斜。根据一个非限制性示例,内密封部分508可以具有恒定的倾斜度,但是其他布置也是可能的。
参考图5C,可以通过示例的方式更详细地示出第一密封表面502a。然而,应当理解,参考图5C所讨论的特征也可以与第二密封表面502b相关。因此,第二密封表面502b可以包括与第一密封表面502a相同的特征。
除了已经结合图5B讨论的内容之外,第一密封表面502a可以设置有外密封部分510。外密封部分510可以放置在电感器206的顶部部分506和外边缘512之间。外密封部分510可以向外边缘512倾斜。
此外,内密封部分508可具有内密封部分长度ISS-L。外密封部分510可具有外密封部分长度OSS-L。OSS-L可以大于ISS-L。优选地,内密封部分长度ISS-L可以是外密封部分长度OSS-L的25%。
外密封部分510的内子部分514可包括内子部分倾斜度。外密封部分510的外子部分516可包括外子部分倾斜度。内子部分倾斜度可以大于外子部分倾斜度。内子部分514可以紧靠顶部部分506。根据一个非限制性示例,外子倾斜度可以与平面平行,因此倾斜度可以是0度。在这种情况下,外子部分516可以与平面平行,因此,外子部分516可以不包括任何倾斜度。具有与平面平行的外子部分的优点可以在于可以容易地制造外子部分516而且可以容易地测量外子部分516与电感器的距离。
所公开的设计使得当第一密封表面502a和第二密封表面502b被压向密封带(未示出)时,保持在管104内的食品中的颗粒可以被推离管104的密封带。密封带可以是管104的一部分,与具有平坦表面电感器时相比,该部分可以以更可控的方式形成为横向密封。
参考图6,以示例的方式示出了包括第一压力分布和第二压力分布的线形图。该线形图说明了压力与距电感器中心的距离的关系,其中距离以毫米(mm)为单位绘制。
第一线602可以示出第一压力分布,其中第一压力分布可以是包括平坦表面和脊的常规电感器,在此称为参考电感器。如图所示,第一线602可以包括位于距电感器中心大约2.6-3.6mm的局部最小值。该局部最小值可能导致产品被封装在包装材料108的管104的密封区中。
第二线604可以示出第二压力分布,其中第二压力分布可以连接到公开的电感器206,即倾斜电感器。如图所示,第二线604不包括第一线602可能包括的局部最小值。
因此,如图6所示,当使用在此公开的具有异形表面410(如上所述与常规电感器可能具有的平坦表面相比)的电感器206时,可以避免局部最小值。由于局部最小值可能导致食品被封装在密封区中,可以通过使用在此公开的电感器206来避免这种风险。
参考图7,流程图示出了用于生产装有食品的食品包装108的方法700。
在第一步骤S702中,可通过使用卷轴接收器接收包装材料108的卷轴。在第二步骤S704中,可以通过使用管形成器由包装材料108形成管104。在第三步骤S706中,可以使用产品填充设备将食品填充到管104中。在第四步骤S708中,管104可以被横向密封在管104的下部。可以通过使用根据结合图6A-D讨论的横向密封装置300的横向密封装置来密封管104。
第四步骤S708可包括第一子步骤S710,其中第一子步骤S710可包括将横向密封装置300置于上部打开状态300A,其中第一臂304a和第二臂304b处于上部位置并且通过使用第一马达装置306a和第二马达装置306b使第一密封钳元件302a和第二密封钳元件302b分离。
第四步骤S708可包括第二子步骤S712,其中第二子步骤S712可包括将横向密封装置300置于上部密封状态300B,其中第一臂304a和第二臂304b处于上部位置并且通过使用第一马达装置306a和第二马达装置306b将第一密封钳元件302a和第二密封钳元件302b从相对侧压到管104上,从而使得当第一密封表面502a和第二密封表面502b被压向密封带时,保持在管104内的食品中的颗粒被推离管104的密封带。
第四步骤S708可包括第三子步骤S714,其中第三子步骤S714可包括将横向密封装置300置于下部密封状态300C,其中第一臂304a和第二臂304b处于下部位置并且通过使用第一马达装置306a和第二马达装置306b将第一密封钳元件302a和第二密封钳元件302b从相对侧压到管104上。
第四步骤S708可包括第四子步骤S716,其中第四子步骤S716可包括将横向密封装置300置于下部打开状态300D,其中第一臂304a和第二臂304b处于下部位置并且通过使用第一马达装置306a和第二马达装置306b使第一密封钳元件302a和第二密封钳元件302b分离。
根据以上的描述,虽然已经描述和示出了本发明的各种实施方案,但本发明不限于此,而是还可以在以下权利要求限定的主题范围内以其他方式实施。
Claims (16)
1.一种用于横向密封装有食品的包装材料(108)的管(104)的电感器(206),所述电感器(206)包括:
主体(402),所述主体(402)包括第一密封表面(502a)和第二密封表面(502b),所述第一密封表面(502a)和所述第二密封表面(502b)布置成在密封状态(S)期间面对所述包装材料(108);
设置在所述主体(402)中的凹部(504),所述凹部(504)用于在切割状态(C)期间接收刀具(208),其中所述第一密封表面(502a)和所述第二密封表面(502b)位于所述凹部(504)的相对侧;以及
设置在所述主体(402)中的电导体装置,所述电导体装置用于在所述密封状态(S)期间在所述包装材料(108)中感应涡流,
其特征在于,
所述第一密封表面(502a)和所述第二密封表面(502b)中的每个都包括顶部部分(506)、位于所述凹部(504)和所述顶部部分(506)之间的内密封部分(508)、和位于所述顶部部分(506)和所述电感器(206)的外边缘(512)之间的外密封部分(510),并且
其中所述内密封部分(508)朝向所述凹部(504)倾斜,所述外密封部分(510)朝向所述外边缘(512)倾斜,从而使得当所述第一密封表面(502a)和所述第二密封表面(502b)被压向密封带时,保持在所述管(104)内的食品中的产品被推离所述管的所述密封带。
2.根据权利要求1所述的电感器(206),其中外密封部分长度(OSS-L)大于内密封部分长度(ISS-L)。
3.根据权利要求1或2所述的电感器(206),其中所述外密封表面(510)的内子部分(514)的内子部分倾斜度大于所述外密封表面(510)的外子部分(516)的外子部分倾斜度,其中所述内子部分(514)紧靠所述顶部部分(506)。
4.根据前述任意一项权利要求所述的电感器(206),其中所述内密封表面(508)具有恒定的倾斜度。
5.根据前述任意一项权利要求所述的电感器(206),其中密封带长度(308)小于14毫米。
6.根据前述任意一项权利要求所述的电感器(206),其中所述电导体装置包括双回路。
7.一种用于生产食品包装(112)的包装机(100),所述包装机(100)包括:
卷轴接收器,所述卷轴接收器布置为接收包装材料(108)的卷轴;
管形成器,所述管形成器布置为从所述包装材料(108)形成管(104);
产品填充设备,所述产品填充设备布置为用食品填充所述管(104);
横向密封装置(300),所述横向密封装置(300)布置为在所述管(104)的下部提供横向密封,所述横向密封装置(300)包括第一密封钳元件(302a)和第二密封钳元件(302b),其中所述第一密封钳元件(302a)附接到第一臂(304a)并且所述第二密封钳元件(302b)附接到第二臂(304b),其中所述第一臂(304a)附接到第一马达装置(306a)并且所述第二臂(304b)附接到第二马达装置(306b),
其中所述第一密封钳元件(302a)包括根据前述任意一项权利要求所述的电感器(206),
其中所述第二密封钳元件(302b)包括砧座,
其中所述第一马达装置(306a)和所述第二马达装置(306b)配置为在以下状态之间移动所述横向密封装置(300):
上部打开状态(300A),其中所述第一臂(304a)和所述第二臂(304b)处于上部位置并且所述第一密封钳元件(302a)和所述第二密封钳元件(302b)分离;
上部密封状态(300B),其中所述第一臂(304a)和所述第二臂(304b)处于所述上部位置并且所述第一密封钳元件(302a)和所述第二密封钳元件(302b)从相对侧被压到所述管(104)上;
下部密封状态(300C),其中所述第一臂(304a)和所述第二臂(304b)处于下部位置并且所述第一密封钳元件(302a)和所述第二密封钳元件(302b)从相对侧被压到所述管(104)上;以及
下部打开状态(300D),其中所述第一臂(304a)和所述第二臂(304b)处于所述下部位置并且所述第一密封钳元件(302a)和所述第二密封钳元件(302b)分离,
其中所述电感器(206)的上部倾斜表面和下部倾斜表面使得在从所述上部打开状态(300A)到所述上部密封状态(300B)的转变期间将食品从所述包装材料(108)的内密封部分(508)和外密封部分(510)移走。
8.根据权利要求7所述的包装机(100),其中生产的每个所述食品包装(112)包括少于200毫升的食品。
9.根据权利要求7或8所述的包装机(100),其中所述包装机(100)的运行速度低于每小时20,000个食品包装(112)。
10.一种用于生产装有食品的食品包装(112)的方法(700),所述方法(700)包括:
通过使用卷轴接收器接收(S702)包装材料(108)的卷轴;
通过使用管形成器从所述包装材料(108)形成(S704)管(104);
使用产品填充设备将所述食品填充(S706)到所述管(104);
通过使用包括第一密封钳元件(302a)和第二密封钳元件(302b)的横向密封装置(300)在所述管(104)的下部横向密封(S708)所述管(104),其中所述第一密封钳元件(302a)附接到第一臂(304a)并且所述第二密封钳元件(302b)附接到第二臂(304b),其中所述第一臂(304a)附接到第一马达装置(306a)并且所述第二臂(304b)附接到第二马达装置(306b),其中所述第一密封钳元件(302a)包括用于加热所述包装材料(108)的电感器(206),
其中所述电感器(206)包括:
主体(402),所述主体(402)包括第一密封表面(502a)和第二密封表面(502b),所述第一密封表面(502a)和所述第二密封表面(502b)布置成在密封状态(S)期间面对所述包装材料(108);
设置在所述主体(402)中的凹部(504),所述凹部(504)用于在切割状态(C)期间接收刀具(208),其中所述第一密封表面(502a)和所述第二密封表面(502b)位于所述凹部(504)的相对侧;以及
设置在所述主体(402)中的电导体装置,所述电导体装置用于在所述密封状态(S)期间在所述包装材料(108)中感应涡流,
其中所述第一密封表面(502a)和所述第二密封表面(502b)中的每个都包括顶部部分(506)、位于所述凹部(504)和所述顶部部分(506)之间的内密封部分(508)、和位于所述顶部部分(506)和所述电感器(206)的外边缘(512)之间的外密封部分(510),
其中所述内密封部分(508)朝向所述凹部(504)倾斜,所述外密封部分(510)朝向所述外边缘(512)倾斜,
其中所述第二密封钳元件(302b)包括砧座,
其中所述密封(S708)步骤包括以下子步骤:
S710:将所述横向密封装置(300)置于上部打开状态(300A),其中所述第一臂(304a)和所述第二臂(304b)处于上部位置并且通过使用所述第一马达装置(306a)和所述第二马达装置(306b)使所述第一密封钳元件(302a)和所述第二密封钳元件(302b)分离;
S712:将所述横向密封装置(300)置于上部密封状态(300B),其中所述第一臂(304a)和所述第二臂(304b)处于所述上部位置并且通过使用所述第一马达装置(306a)和所述第二马达装置(306b)将所述第一密封钳元件(302a)和所述第二密封钳元件(302b)从相对侧压到所述管(104)上,从而使得当所述第一密封表面(502a)和所述第二密封表面(502b)被压向密封带时,保持在所述管(104)内的食品中的颗粒被推离所述管(104)的所述密封带;
S714:将所述横向密封装置(300)置于下部密封状态(300C),其中所述第一臂(304a)和所述第二臂(304b)处于下部位置并且通过使用所述第一马达装置(306a)和所述第二马达装置(306b)将所述第一密封钳元件(302a)和所述第二密封钳元件(302b)从相对侧压到所述管(104)上;以及
S716:将所述横向密封装置(300)置于下部打开状态(300D),其中所述第一臂(304a)和所述第二臂(304b)处于所述下部位置并且通过使用所述第一马达装置(306a)和所述第二马达装置(306b)使所述第一密封钳元件(302a)和所述第二密封钳元件(302b)分离。
11.根据权利要求10所述的方法(700),其中外密封部分长度(OSS-L)大于内密封部分长度(ISS-L)。
12.根据权利要求10或11所述的方法(700),其中所述外密封表面(510)的内部分(514)的内部分倾斜度大于所述外密封表面(510)的外部分(516)的外部分倾斜度,其中所述内部分(514)紧靠所述顶部部分(506)。
13.根据前述任意一项权利要求所述的方法(700),其中所述内密封表面(508)具有恒定的倾斜度。
14.根据前述任意一项权利要求所述的方法(700),其中密封带长度(308)小于14毫米。
15.一种食品包装(112),所述食品包装(112)通过以下步骤得到:
通过使用卷轴接收器接收(S702)包装材料(108)的卷轴;
通过使用管形成器从所述包装材料(108)形成(S704)管(104);
使用产品填充设备将食品填充(S706)到所述管(104);
通过使用包括第一密封钳元件(302a)和第二密封钳元件(302b)的横向密封装置(300)在所述管(104)的下部横向密封(S708)所述管(104),其中所述第一密封钳元件(302a)附接到第一臂(304a)并且所述第二密封钳元件(302b)附接到第二臂(304b),其中所述第一臂(304a)附接到第一马达装置(306a)并且所述第二臂(304b)附接到第二马达装置(306b),其中所述第一密封钳元件(302a)包括用于加热所述包装材料(108)的电感器(206),
其中所述电感器(206)包括:
主体(402),所述主体(402)包括第一密封表面(502a)和第二密封表面(502b),所述第一密封表面(502a)和所述第二密封表面(502b)布置成在密封状态(S)期间面对所述包装材料(108);
设置在所述主体(402)中的凹部(504),所述凹部(504)用于在切割状态(C)期间接收刀具(208),其中所述第一密封表面(502a)和所述第二密封表面(502b)位于所述凹部(504)的相对侧;以及
设置在所述主体(402)中的电导体装置,所述电导体装置用于在所述密封状态(S)期间在所述包装材料(108)中感应涡流,
其中所述第一密封表面(502a)和所述第二密封表面(502b)中的每个都包括顶部部分(506)、位于所述凹部(504)和所述顶部部分(506)之间的内密封部分(508)、和位于所述顶部部分(506)和所述电感器(206)的外边缘(512)之间的外密封部分(510),
其中所述内密封部分(508)朝向所述凹部(504)倾斜,所述外密封部分(510)朝向所述外边缘(512)倾斜,
其中所述第二密封钳元件(302b)包括砧座,
其中所述密封(S708)步骤包括以下子步骤:
S710:将所述横向密封装置(300)置于上部打开状态(300A),其中所述第一臂(304a)和所述第二臂(304b)处于上部位置并且通过使用所述第一马达装置(306a)和所述第二马达装置(306b)使所述第一密封钳元件(302a)和所述第二密封钳元件(302b)分离;
S712:将所述横向密封装置(300)置于上部密封状态(300B),其中所述第一臂(304a)和所述第二臂(304b)处于所述上部位置并且通过使用所述第一马达装置(306a)和所述第二马达装置(306b)将所述第一密封钳元件(302a)和所述第二密封钳元件(302b)从相对侧压到所述管(104)上,从而使得当所述第一密封表面(502a)和所述第二密封表面(502b)被压向密封带时,保持在所述管(104)内的食品中的颗粒被推离所述管(104)的所述密封带;
S714:将所述横向密封装置(300)置于下部密封状态(300C),其中所述第一臂(304a)和所述第二臂(304b)处于下部位置并且通过使用所述第一马达装置(306a)和所述第二马达装置(306b)将所述第一密封钳元件(302a)和所述第二密封钳元件(302b)从相对侧压到所述管(104)上;以及
S716:将所述横向密封装置(300)置于下部打开状态(300D),其中所述第一臂(304a)和所述第二臂(304b)处于所述下部位置并且通过使用所述第一马达装置(306a)和所述第二马达装置(306b)使所述第一密封钳元件(302a)和所述第二密封钳元件(302b)分离。
16.根据权利要求15所述的食品包装,其中横向密封翅片的高度为7毫米或者更小。
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JP2016169020A (ja) * | 2015-03-12 | 2016-09-23 | 凸版印刷株式会社 | 液体用紙容器の超音波シール装置 |
JP6904253B2 (ja) * | 2015-10-02 | 2021-07-14 | 凸版印刷株式会社 | アンビル及び超音波シール装置 |
US20180057198A1 (en) * | 2016-08-24 | 2018-03-01 | Robert Bosch Gmbh | Product detection system |
WO2020161018A1 (en) * | 2019-02-05 | 2020-08-13 | Tetra Laval Holdings & Finance S.A. | An induction heat sealing device and a method for transversally seal a tube of packaging material |
US11260603B2 (en) * | 2019-10-03 | 2022-03-01 | Frito-Lay America, Inc. | Heat seal jaws with asymmetric teeth |
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2021
- 2021-06-16 US US18/000,528 patent/US20230227194A1/en active Pending
- 2021-06-16 EP EP21179808.7A patent/EP3936314A1/en active Pending
- 2021-06-16 WO PCT/EP2021/066262 patent/WO2022008187A1/en active Application Filing
- 2021-06-16 JP JP2023501100A patent/JP2023533291A/ja active Pending
- 2021-07-08 CN CN202110773989.XA patent/CN113911469A/zh active Pending
- 2021-07-08 CN CN202121549531.8U patent/CN216862035U/zh active Active
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JP2023533291A (ja) | 2023-08-02 |
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US20230227194A1 (en) | 2023-07-20 |
EP3936314A1 (en) | 2022-01-12 |
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