CN109328166A - 捆束产品及形成捆束产品的***和方法 - Google Patents

捆束产品及形成捆束产品的***和方法 Download PDF

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CN109328166A
CN109328166A CN201680059368.2A CN201680059368A CN109328166A CN 109328166 A CN109328166 A CN 109328166A CN 201680059368 A CN201680059368 A CN 201680059368A CN 109328166 A CN109328166 A CN 109328166A
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China
Prior art keywords
packaging material
bundle
product according
product
paper products
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CN201680059368.2A
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克里斯·B·安克拉姆
贾斯丁·S·彭斯
伯德·泰勒·米勒
阿米尔·山姆·萨巴格
詹姆斯·E·希利
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Shangpin Paper Products Co Ltd
First Quality Tissue LLC
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Shangpin Paper Products Co Ltd
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Publication of CN109328166A publication Critical patent/CN109328166A/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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/07—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles
    • 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
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • 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
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    • 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
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
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    • 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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—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
    • B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8246—Servomechanisms, e.g. servomotors
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/14—Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form
    • B65B25/146—Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form packaging rolled-up articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/067—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it the web advancing continuously
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    • B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65B53/063—Tunnels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Packages (AREA)
  • Basic Packing Technique (AREA)

Abstract

一种可装运的捆束产品，包括多个纸制品卷，每个都由第一包装材料单独包装并相对于彼此布置以形成捆束。捆束由第二包装材料包装。第二包装材料具有相对于捆束小于零的收缩因子，并且捆束具有18英寸×14英寸×8英寸的尺寸。

Description

捆束产品及形成捆束产品的***和方法
相关申请
本申请要求于2015年10月14日提交的题为“BUNDLED PRODUCT AND SYSTEM ANDMETHOD FOR FORMING THE SAME(捆束产品及形成捆束产品的***和方法)”的第62/241,554号美国临时专利申请以及于2016年8月2日提交的题为“BUNDLED PRODUCT AND SYSTEMAND METHOD FOR FORMING THE SAME(捆束产品及形成捆束产品的***和方法)”的第62/370,128号美国临时专利申请的优先权，这些申请的内容通过引用整体并入本文中。
技术领域
本发明一般涉及在薄膜中包装物品，特别地，涉及将成组的物品紧密包装在薄膜内的***和方法。
背景技术
2003/0159401号美国专利申请公开涉及一种密封装置，更具体地，涉及一种特别适用于包装机器的密封装置，其中用塑料膜包封间隔开的产品。
5,447,012号美国专利也公开了一种密封装置，特别地，描述了一种用于包装成捆束或成组的产品(例如成卷的卫生纸或纸巾)的包装机。这些卷通过传送带和拉带推进，成组的卷被整理成捆束。这些捆束通过塑料膜包裹，并且膜的纵向边缘被研磨和密封以形成细长管。
薄膜通过密封组件密封在每对相邻的捆束之间。密封组件同时密封出口捆束的尾端和进入捆束的前缘。
5,753,067号美国专利描述了一种用于制袋包装机的密封器。将热塑性制袋材料制成垂直管，并通过横向密封器将管密封。密封器包括一对安装在绕轴旋转的旋转臂上的密封爪。轴通过螺旋扣机构彼此相向和相背移动。密封爪因而沿着D形轨迹移动。
5,279,098号美国专利和5,347,795号美国专利描述了用于使旋转臂的轴彼此相向和相背移动的特定机构。
发明内容
本发明涉及对诸如2003/0159401号美国专利申请中所述包装设备的常规包装设备的改进，其通过安装将包装密封在塑料膜中所倚靠的背景平板来实现。利用平板的安装，获得捆束包装内新水平的捆束“紧密度”或最小化的多余空隙体积。通过使用使围绕包装物品的薄膜收缩的热通道可进一步改善捆束紧密度。
根据本发明的示例性实施方式，提供了一种背景平板，用于用管状膜包裹间隔开的产品的包装机。与常规的包装机相比，背景平板允许用较少的塑料或其他材料薄膜捆束产品，导致“较紧密”的包装和较少的使产品在薄膜内移动的空隙体积。
包装机还包括密封装置。密封装置包括提供产品前进路径的框架。密封支撑结构安装在框架上，用于沿着路径进行线性往复运动。塑料膜的纵向边缘借助于具有加压空气的加热元件重叠并密封，以提供细长的薄膜管。在加压空气和产品之间提供背景平板，以作为将重叠膜密封在一起的背景。平板对塑料膜施加压力，从而最小化或消除塑料膜与产品之间的空间体积，这又使捆束紧密度最大化。曲臂可旋转地安装在框架上以使密封支撑结构往复运动。上密封模和下密封模安装在密封支撑结构上，用于在大致垂直于路径的方向上朝向彼此和远离彼此线性移动。
上密封模和下密封模在两个方向上线性移动，同时待密封的产品不断移动以用较少的移动部件提供良好的速度。连续运动允许机器以较慢的速度运行，以实现与常规机器的间歇运动相同的生产速度，从而允许降低相同产量的成本并改进产品控制。该设计还可以在机器以完全恒定速度运行时实现较高的生产率，提供更快的生产速度而不增加成本。
密封模安装在引导线性垂直运动的安装杆上。模具朝着彼此移动以靠着膜闭合来密封并远离彼此移动以允许产品在模具之间通过。模具安装杆安装在往复运动的框架上，该框架在与产品移动的方向平行的方向上线性往复运动，使得密封模在密封步骤期间与膜一起移动。
密封模通过伺服马达打开和闭合，使得密封区域的长度能够自动改变。这在运行可变长度的包装时提供了显着的优势。当运行较短的包装时，自动改变密封区域长度的能力提供较高的运行速率，并降低使模具返回到其初始循环位置所需的加减速。
上模与下模之间的开口间隙也能够自动改变。这在运行可变高度的包装时具有显着的优势。
密封模的打开和闭合速度能够改变，而不会改变模具相对于产品的位置。这在闭合模具时从包装之间抽出空气时具有显着的优点。该特征的另一个优点是，通过在不改变模具相对于产品的水平放置的情况下快速打开模具，能够最大化密封时间。
根据本发明的示例性实施方式，用于包装和密封间隔开的产品的包装设备包括：框架，其提供间隔开的产品移动所经过的路径；密封支撑结构，其安装在框架上以沿着所述路径移动；加热元件，其具有加压空气以提供细长的薄膜管；平板，其提供用于密封薄膜的背景；上密封单元和下密封单元，其安装在密封支撑结构上用于在大致垂直于路径的方向上朝向彼此和远离彼此移动；用于使上密封单元和下密封单元朝向彼此移动以闭合密封单元从而使密封单元之间的膜密封并且用于移动上密封单元和下密封单元各自远离以打开密封单元的装置；以及用于使密封支撑件沿第一位置与第二位置之间的路径往复运动的装置。
在示例性实施方式中，密封支撑结构安装在框架上，用于沿着路径进行线性往复运动。
在示例性实施方式中，上密封单元和下密封单元安装在密封支撑结构上，用于朝向彼此和远离彼此线性移动。
在示例性实施方式中，用于移动上密封单元和下密封单元的装置包括伺服马达。
在示例性实施方式中，用于移动上密封单元和下密封单元的装置包括由伺服马达驱动的皮带传动装置。
在示例性实施方式中，用于使密封支撑结构往复运动的装置包括可旋转地安装在框架上的曲臂以及连接曲臂和密封支撑结构的连杆。
在示例性实施方式中，包装设备包括用于旋转曲臂的伺服马达。
在示例性实施方式中，包装设备包括在密封支撑结构与框架之间的线性支承件，用于支撑密封支撑结构以沿着路径线性移动。
在示例性实施方式中，包装设备包括密封支撑结构上的线性导轨，上密封单元和下密封单元安装在线性导轨上以用于朝彼此和远离彼此线性移动。
在示例性实施方式中，包装设备包括密封支撑结构上的线性导轨和上下密封单元上的线性支承件，用于支撑密封单元以沿着路径线性移动。
在示例性实施方式中，包装设备包括框架上的线性导轨和密封支撑结构上的线性支承件，用于支撑密封支撑结构以沿着所述路径线性移动。
在示例性实施方式中，用于使密封支撑结构往复运动的装置包括安装在框架上并连接到密封支撑结构的皮带驱动器。
在示例性实施方式中，包装设备包括在框架上的线性导轨，其在路径的方向上延伸，以及在密封支撑结构上的线性支承件，用于支撑密封支撑结构以沿着路径线性移动。
在示例性实施方式中，包装设备包括在密封支撑结构上的一对线性导轨，其大致垂直于路径延伸，并且在上密封单元和下密封单元上的一对支承件可滑动地安装在线性导轨上用于朝向彼此和远离彼此的线性运动。
在示例性实施方式中，包装设备包括连接至一对线性导轨的上横向构件和下横向构件，以及用于使上横向构件和下横向构件及线性导轨在大致垂直于路径的方向上移动的装置。
在示例性实施方式中，线性导轨可滑动地安装在密封支撑结构中。
在示例性实施方式中，用于移动的装置包括螺纹轴，其连接至上横向构件和下横向构件中的一个并且延伸穿过密封支撑结构，由此螺纹轴的旋转使上横向构件和下横向构件以及线性导轨相对于密封支撑结构移动。
在示例性实施方式中，包装设备包括可旋转地安装在上横向构件上的上滑轮和可旋转地安装在下横向构件上的下滑轮，一对在上滑轮和下滑轮上延伸的传动带，以及用于旋转上滑轮或下滑轮以移动驱动带的装置，上密封单元和下密封单元连接至传动带，以与传动带一起移动。
在示例性实施方式中，产品是纸卷或纸巾产品。
在示例性实施方式中，包装设备生产具有不超过总包装长度的高度尺寸的产品捆束。
在示例性实施方式中，如通过捆束紧密度测试程序所测量，捆束具有小于10mm的搭接密封方向收缩偏差。
在示例性实施方式中，包装设备包括热通道。
根据本发明示例性实施方式的可装运的捆束产品包括：多个纸制品卷，每个都由第一包装材料单独包装并相对于彼此布置以形成捆束，捆束由第二包装材料包装，其中第二包装材料具有相对于捆束小于零的收缩因子，并且捆束具有18英寸×14英寸×8英寸的尺寸。
在示例性实施方式中，第一包装材料和第二包装材料包括高密度和低密度聚乙烯。
在示例性实施方式中，与第一包装材料相比，第二包装材料具有更高数量的高密度聚乙烯。
在示例性实施方式中，第二包装材料包括由10-100％聚丙烯组成的一个或多个外层。
在示例性实施方式中，第一包装材料和第二包装材料中的至少一者包括聚丙烯膜的层压层。
在示例性实施方式中，与第二包装材料相比，第一包装材料具有更高百分比的防粘连树脂。
在示例性实施方式中，第二包装材料包括在3至5的范围内的多个层。
在示例性实施方式中，与外层相比，第二包装材料的中心层包含更高百分比的高密度聚乙烯。
在示例性实施方式中，与接触单独包装的纸制品卷的一侧相比，第一包装材料在与第二包装材料接触的一侧上具有较高量的防粘连树脂。
在示例性实施方式中，第二包装材料经受热处理。
在示例性实施方式中，第二包装材料在热处理之后具有较低的结晶度。
在示例性实施方式中，第二包装材料在热处理之后具有较低的表面积。
在示例性实施方式中，其中热处理的温度范围在华氏300-400度之间。
在示例性实施方式中，热处理的持续时间在20至45秒之间。
在示例性实施方式中，第二包装材料的抗穿刺性在800-1200gf之间。
在示例性实施方式中，第二包装材料具有1.0至3.5千分之一英寸之间的厚度。
在示例性实施方式中，第二包装材料在热处理之后表现出非均质性。
在示例性实施方式中，单独包装的纸制品卷相对于彼此以交错/互锁堆叠模式布置。
根据本发明的示例性实施方式的可装运的捆绑产品包括：多个纸制品卷，其各自由第一包装材料单独包装并相对于彼此布置以形成捆束，纸制品具有大于400微米的体量，每个纸制品卷具有小于122mm的直径和等于或大于4英寸的卷宽度，捆束由第二包装材料包装，其中第二包装材料具有相对于捆束小于零的收缩因子并且捆束具有18in.(英寸)×14in.(英寸)×8in.(英寸)的尺寸。
在示例性实施方式中，多个纸制品卷中的每一个具有在9.5cc/g至12cc/g之间的卷密度。
在示例性实施方式中，多个纸制品卷中的每一个具有小于4mm的Kershaw坚度。
根据本发明示例性实施方式的可装运的捆束产品包括：多个纸制品卷，其各自由第一包装材料单独包装并相对于彼此布置以形成捆束，捆束由第二包装材料包装，其中第二包装材料具有相对于捆束小于零的收缩因子和介于120与140摄氏度之间的熔点，并且捆束具有18in.(英寸)×14in.(英寸)×8in.(英寸)的尺寸。
根据本发明示例性实施方式的可装运的捆束产品包括：多个纸制品卷，其各自由第一包装材料单独包装并相对于彼此布置以形成捆束，捆束由第二包装材料包装，其中第二包装材料具有相对于捆束小于零的收缩因子
附图说明
图1A和1B是根据本发明的包括密封装置的包装机的局部侧视图；
图2是密封装置的放大侧视图；
图3是密封装置的俯视图；
图4-12是示出密封循环中的一系列步骤的透视图；
图13-21是对应于图4-12的侧视图；
图22是密封段的横向视图；
图23是图22的一部分的局部放大图；
图24是线性导轨和支承件之一的局部放大图；
图25是上模组件的前视图；
图26是沿图25的线26-26截取的截面图；
图27是上模组件右端的局部放大图；
图28是修改的实施方式类似于图2的视图；以及
图29示出了上密封模的移动的一个示例。
图30A-30D示出了根据本发明示例性实施方式的背景平板的各种视图。
图31是示出根据本发明示例性实施方式的包装***的框图。
图32A和32B是示出根据本发明示例性实施方式的对于包装的纸巾捆束的热处理效果的表示图。
图33是根据本发明示例性实施方式的包装的纸巾捆束的透视图。
图34是图32中所示的包装的捆束的角部的透视图。
具体实施方式
图1A、1B和1C示出了根据本发明的示例性实施方式的通常由附图标记25表示的包装机。机器25特别适用于包装成卷的卫生纸或纸巾。
机器25包括进料阻塞带段26、产品翻转段27、产品整理段28、薄膜进料/搭接封口/包围成形段29、拉带段30、密封段31和排出段32。这些段的细节，除了整理段和密封段的改进之外，都在5,447,012号美国专利和2003/0159401号美国专利申请中进行了描述，其内容通过引用整体并入本文。
参照图2和3，包装机25将成卷的卫生纸或纸巾35集合成捆束36。在图3中，每个捆束包括横跨卷前进的方向的四个卷和沿机器方向的四个卷。在图4中，每个捆束包括横向两个卷和纵向六个卷。也有可能是许多其他配置方式。卷也能够堆叠在彼此顶部。
捆束36通过传送带和拉带沿图2-21中的箭头A的方向前进。在到达密封段31之前，捆束被塑料膜38封闭(图2和3)。如本领域所熟知的那样，塑料膜的纵向边缘借助于具有加压空气的加热元件重叠和密封，以提供沿箭头A方向延伸的细长管。在加压空气与产品之间立着平板150，充当将重叠的塑料膜密封在一起的背景。如图1C中所示，平板150位于机器25的成形段29内。板150在密封过程中减小了产品顶部与塑料膜38之间的距离。这种空间的消除使得塑料膜38较紧密地贴合在产品周围。
如在图30A-30D中较详细地所示，板150是一般细长的元件，其包括近端部分152和远端部分154。近端部分152固定至机器25，并且远端部分154保持不附接和自由浮动。板150由诸如铝或塑料的柔性材料制成，使得板150的远端部分154能够将力向下施加到产品上，以响应在产品在下面通过时产品将板150向上推动。板150的向下的力减小或消除了产品与塑料膜38之间的空间。
如将在下文中解释的那样，密封段31切割并密封每对捆束之间的塑料管。在图3中，捆束36A的前端40已经被密封。手柄36A和36B之间的塑料管正要被切割和密封，以提供用于捆束36A的密封后端和用于捆束36B的密封前端。
参照图2和图3，密封段或装置31包括一般由附图标记42表示的固定框架，其包括垂直柱43-46和水平梁47-52。用于传送捆束的被驱动的拉带53和54(图3)安装在水平梁上。
一般由附图标记58表示的横动或往复式框架安装在固定框架42上，用于在与产品移动方向平行的方向上前后线性往复运动。往复式框架58包括一对竖直杆60和61(图4)以及上横杆62和下横杆63。横向延伸托架65和66(图3)附接至竖直杆60和61，并且通道形支承件68(图2、22和24)安装在每个托架下方。支承件68架在安装在固定框架42的水平梁51和52上的线性导轨或轨道70上。
在图2和3中所示的实施方式中，框架58通过一对曲臂72和73往复运动，曲臂72和73固定安装在轴74上，轴74可旋转地安装在固定框架42上。轴74通过固定框架上的伺服马达76旋转。曲臂72和73通过连杆78和79连接至往复式框架58上的托架65和66。连杆的端部可枢转地连接至曲臂和托架。
图2示出了往复式框架58相对于产品流的方向A处于其最上游或左侧位置。随着轴74从其图2位置旋转180°，曲臂72和73以及连杆78和79使框架58沿产品流的方向线性向右移动。框架的线性运动由线性导轨70引导。
在图2中以尺寸B示出了往复式框架运动的行程或长度。框架的最下游位置或右侧位置对应于尺寸B的右端。
随着轴74继续从180°旋转通过360°，曲臂和连杆使往复式框架与产品流方向相反地移动，以使框架返回到图2位置。
参照图22和图23，上密封模组件81和下密封模组件82附接至安装杆83和84，安装杆83和84附接至上线性支承件85和下线性支承件86。线性支承件85和86能够在立轴87和88上竖直滑动。
上横向构件89和下横向构件90被夹在立轴87和88上。上滑轮91和下滑轮92安装在横轴93和94上，横轴93和94附接至横向构件89和90上。右传动带95和左传动带96在上滑轮91和下滑轮92上行进。
上安装杆83通过夹具97连接至传动带95和96的后部(图23)。下安装杆84通过夹具98连接至传动带的前部。下横轴94和下滑轮92由伺服马达99驱动。
用于密封模具的安装杆83和84安装成在立轴87和88上垂直往复运动。当伺服装置99逆时针转动下滑轮92时，传动带95和96的后环向下运动，向下带动上模81，而传动带95和96的前环向上移动，向上带动下模82。同时发生的运动使模具闭合。然后顺时针旋转伺服装置打开模具。
参照图25和26，上模组件81包括一对常规脉冲密封带120和121以及安装在密封带之间的锯齿形切割刀122。密封带120密封出口捆束的尾端，并且密封带121密封进入捆束的前端。一层特氟龙织物隔离密封袋并防止熔化的塑料附着在密封带上。一对薄膜夹123横跨密封带并通过夹持弹簧124弹性偏置。当上下模闭合时，薄膜夹夹住薄膜，刀122切割薄膜，密封带120、121密封薄膜。
在一个特定实施方式中，伺服马达99是包括20:1行星齿轮箱的71in-lb(8Nm)NC伺服马达。
伺服马达99调整模具之间的开放尺寸以适应格式高度变化。模具的闭合位置可通过手轮调节(图22)。横向构件89和90以及立轴87和88形成可垂直移动的组件，其包括滑轮91和93、传动带95和96以及安装杆82和83。手轮螺纹连接至螺纹轴101。螺纹轴穿过上梁62并可转动地连接至横向构件89。当手轮转动时，螺纹轴101使可垂直移动的组件向上或向下移动，如箭头102所示。立轴87和88在上梁62和下梁63上的线性导轨103和104内滑动，以允许可垂直移动的组件上下运动。
手轮用于升高或降低密封模组件，以便当模具闭合时，其位于待密封产品高度的一半处或位于包装中心处。
螺纹轴也能够通过伺服马达或其他机械或电力驱动装置旋转。此外，可垂直移动的组件能够通过除了螺纹轴之外的机构来升高或降低，例如皮带传动。
往复式模架58水平往复运动，由曲臂72和73推动，以便在切断和密封膜管的同时匹配塑料膜的速度。曲臂72和73有利地提供用于曲臂72和73的两个枢转位置105和106(图2)以改变水平模移动的量。在一个特定实施方式中，两个枢轴位置提供了12英寸和16英寸的水平移动。枢轴位置是根据产品格式手动设置的。
图28中示出了使模架58往复运动的一种可选方法。往复式模架58附接至在滑轮108和109上行进的皮带传动装置107上。滑轮108通过伺服马达76驱动。皮带传动装置沿一个方向的旋转使往复式模架向右移动，皮带传动装置沿相反方向的旋转将模架向左移动。
在一个特定实施方式中，用于曲柄机构的伺服马达76是通过50:1齿轮箱驱动模具曲柄机构的105in-lb(12Nm)NC伺服马达。伺服马达和拉带通过控制器111控制(图2)，比如具有远程I/O的Giddings&Lewis MMC4PC。
图4和图13示出了密封循环的第一步。出口捆束36A的前端已经被密封。上模安装杆83和下模安装杆84处于其打开位置，以允许出口捆束36A移动通过密封模。如5,447,012号美国专利中所述，捆束的运动由在上卷和下卷110-115上夹带的拉带控制。也可以使用侧拉带。曲柄臂72和73定位成使得往复使框架58在产品运动的方向A上处于其向前运动的开始处。
图5和图14示出了在捆束36A和36B之间闭合的过程中的密封模。随着模具朝向彼此移动，往复式框架58由曲臂72和73向前移动。模具闭合的速率能够变化，以允许进入捆束36B压扁与现有捆束36A的间隙。模具闭合的速率与模具穿过的速率相协调，以实现最佳的密封和端部角撑板。排出拉带组件和侧面排出拉带组件能够分开，以便释放其间容纳的捆束，使得密封模向塑料膜管的向下运动能够压扁膜管并使相邻的捆束移动到一起。可选地，排出拉带能够反向驱动以实现相同的结果，或者在模具关闭时，能够允许捆束在卷110和111上滑动越过排出拉带。
如在5,447,012号美国专利中所述，在管被密封模压扁时，角撑平板在塑料管的侧面形成角撑板。
机械打褶器117(图22)能够用于帮助在大包装上形成角撑板。图6和15示出了密封步骤开始时处于闭合位置的密封模。塑料管夹在密封模之间，以便密封带能够开始密封塑料。切割刀切断间隔开的密封带之间的塑料。
图7和16示出了密封步骤的结束。随着曲臂72和73以与塑料膜前进速度相同的速度向下游移动往复式框架58，密封模保持夹紧在塑料膜上。密封模与塑料膜的水平移动为密封模提供了足够的时间来密封薄膜。
图8和图17示出了模具在接近往复式框架58的向前运动结束处打开。密封模打开以允许往复式框架58反向运动通过第二捆束36B。
图9和18示出了在其向前行程结束处的往复式框架58。密封模打开，曲臂72和73的继续旋转将开始往复式框架的向后运动。
图10和19示出了在返回到其原始位置的过程中的往复式框架。密封模保持打开状态。
图11和20示出了靠近其反向行程结束处的往复式框架58。一旦密封模清除出口捆束36B，就开始闭合。
图12和21对应于图4和13，并且示出了在往复行程结束处以及向前行程开始处的往复式框架58。密封模正处于闭合过程中。
图29示出了由往复式框架58的线性水平往复运动和安装杆83的线性垂直往复运动的组合引起的上密封模的运动路径P的一个示例。在图2上叠加了相同的路径P。下密封模的运动路径是图29的路径P的镜像。
路径P上的位置204对应于图4。密封模是打开的，并且往复式框架58处于其图2中位置。
路径P的弯曲部分205表示在密封装置从其图4位置移动到其图6位置时的上密封模具的运动。随着往复式框架向右移动，上密封模和下密封模朝向彼此移动。
位置206对应于图6。模具靠着塑料膜闭合，循环的密封部分开始。密封一直继续到对应于图7的点207。
在点207与点208之间，随着往复式框架继续向右移动，模具打开。在点208处，对应于图8，模具完全打开。
在点208与点209之间，往复式框架58移动至左侧以使密封模向其开始位置返回。在点209与点204之间，随着往复式框架移动至其最上游位置，密封模开始闭合。
在优选实施方式中，往复式框架58通过曲柄机构或皮带传动机构往复运动。但是，也能够使用其他方式沿着产品移动的路径前后移动框架。
类似地，用于打开和闭合密封模的优选装置包括皮带传动装置。但是也能够使用其他装置。
图31是示出根据本发明的示例性实施方式的一般由附图标记300表示的包装***的框图。如关于前述实施方式所述，包装***300包括进料阻塞带段326、产品翻转段327、产品整理段328、薄膜进料/搭接密封/包围成形段329、拉带段330、密封段331和排出段332。密封段331还包括如前所述的各种部件。在本实施方式中，在排放段332之后提供了热通道段333。与传统包装***相比，通过热收缩塑料膜，热通道段333有助于增加卷纸或纸巾的捆束紧度。传送机将包装的成卷的产品输送通过热通道段333，从而使外包装塑料膜收缩并且符合物品或物品组的轮廓。这些物品或物品组可以或可以被单独包裹在具有比外包裹膜更高熔点的单独膜中以抵抗通过热通道的收缩。适用于本发明热通道的示例在8051629、7155876、7823366、7328550、7269929和345465号美国专利以及2014/0272747号美国专利申请中进行了描述，其内容通过引用整体并入本文中。在热通道中施加的热量能够通过对流、传导或辐射来传递。典型的热通道通过吹送使用电加热器加热的空气来使用对流。
在本发明的示例性实施方式中，由热通道施加的热处理的温度在300-400℉之间，并且热量在20-45秒之间施加到捆束产品上。在示例性实施方式中，热量主要分布到捆束的顶部和底部。这种不均匀加热的效果是生产的包装端部紧密而有塑形，同时保持包装的侧面光滑且褶皱有限。
应该认识到，除了本文所述的那些以外，热通道还可以与其他类型的包装***一起使用，以实现改进的捆束紧密度。
图32A和32B示出了热处理对包装的纸巾卷或纸巾产品的影响。如图所示。如图32A中所示，在热处理之前，包装材料不破坏卷的平面，也不勾画捆束内包装的轮廓。如图32B中所示，在热处理之后，包装材料破坏了捆束内的卷的平面并且形成了内包装的形状。
在本发明的示例性实施方式中，纸巾卷的包装包括以外包装材料包裹纸巾卷的捆束。该捆束可以包括一个或多个纸巾卷的单独包装，每个包装都用单独的包装材料包装。每个单独的包装材料可以被称为内包装或“内聚合”(在包装材料由聚乙烯制成的情况下)，覆盖整个捆束的外包装材料被称为“外聚合”。纸巾卷包装可具有以下特点：
该包装是可分拣的(为了本发明的目的，“可分拣”意在表示该捆束适合可分拣的尺寸大小(18英寸×8英寸×8英寸))。
该包装是可装运的(为了本发明的目的，“可装运”意在表示该包装能够成功地从分销商运输到最终消费者而无需任何额外包装)。
尺寸为18”×14”×8”；
体量大于500微米的成品纸；
经过热处理的捆束内的卷为单卷或多卷，每卷都包裹以聚合塑料、纸张或根本没有初级包装；
捆束内的卷芯被压平或保持圆柱形状；
捆束内的卷是无芯的或者具有直径在10-60mm之间的芯；
捆束中纸的总平方尺寸在20-32sq.ft(平方英尺)之间；
捆束内卷的密度在10.7-11.3cc/g之间；
内聚合的聚合组分具有比外聚合的聚合组分更高的玻璃化转变温度；
外聚合和内聚合都是由包括高密度聚乙烯(HDPE)和低密度聚乙烯(LDPE)的树脂制成。用于外聚合的聚合组分包括比用于内聚合的聚合组分更大量的HDPE。
内聚合和外聚合的组分都包括抗静电添加剂(比如具有乙氧基化表面活性剂的胺)。外聚合的组分具有比内聚合的组分更低的抗静电树脂百分比。内聚合中抗静电树脂的分布在面向外聚合的内聚合表面上高于其在面向成卷产品的内聚合表面上。
内聚合的组分具有比外聚合的组分更高比例的防粘连添加剂(比如碳酸钙、碳酸钠或滑石)。内聚合的组分具有比外聚合的组分更高比例的助滑添加剂(比如长链脂肪)。
使用ASTM D6988-13检测方法测量的外聚合的聚合厚度为1.0密耳至3.5密耳。外聚合能够由3至5层制成。优选地，中心层含有比外层更高百分比的HDPE。优选地，外聚合具有在600与1200gf之间的抗穿刺性，更优选地，具有在800与1200gf之间的抗穿刺性。
在本发明的示例性实施方式中，在热通道中经过加热过程之后，外聚合的结晶度比在加热过程之前低。如上所述，当外聚合被均匀加热以保持侧面光滑并且顶端和底端紧密时，顶端和底端的薄膜将具有明显较大的刚性和较小的可拉伸性。
在示例性实施方式中，在热处理之前的外聚合的周长比捆束的周长大约25mm或更多。在热处理之后，外聚合的周长减小，使得比捆束的先前周长小约10mm或更多。
在示例性实施方式中，例如条形码形式的库存单位(SKU)被印刷或以其他方式直接设置在外包装材料上。SKU可以直接从外包装读取，因而不需要额外的外包装，比如盒子。外包装上的图形可以进行调整，以便在包装进行热处理后，其在外观上是正确的。
在示例性实施方式中，内聚合和/或外聚合可以包括染色的中心层。在不受理论约束的情况下，据信使用染色层代替表面印刷以向内聚合提供颜色和/或图形允许更多地控制内聚合与外聚合的相对表面之间的界面。
在示例性实施方式中，捆束内的每个纸制品卷具有小于4mm的Kershaw(柯肖)坚度，其中Kershaw坚度使用来自Kershaw Instrumentation(柯肖仪器)517AuburnAve.Swedesboro(斯泰茨伯勒)，NJ，USA 08085的型号为RDT-2000B的Kershaw卷密度测试仪测定如下：
1.程序
1.1.打开卷密度测试仪并让其预热约15分钟。
1.2.确保运行/校准开关处于“RUN(运行)”位置。
1.3.将待测试的卷放在测试主轴上。
1.4.调整卷直径组件，直到指针指示正在测试的卷的公称直径。
(卷直径需要转换为英寸来为机器直径设置指针。)
1.5.按下“GREEN(绿色)”向前按钮，工作台将自动移向待测试的卷。一旦探头接触到卷，施加在探头上的力将显示在数字力显示屏上。将显示位移和力的结果。
在示例性实施方式中，捆束内的每个纸制品卷具有介于9.5cc/g至12cc/g之间的卷密度。卷密度通过以下步骤确定：
计算纸巾卷内的纸巾体积。为此；首先使用圆周尺测量卷的周长。一旦确定了卷的周长，则能够使用周长＝2×Pi×半径的公式来计算卷的半径。一旦确定了卷半径，然后使用圆柱体积公式计算卷体积：体积＝Pi×半径的平方×高度。接下来，我们需要去除卷芯占据的体积以得到纸巾本身的体积。通过展开纸张来移除卷芯并重复以上计算以确定卷芯的体积。接下来从总卷体积中减去卷芯体积以得到卷中的纸的体积。使用的长度单位应为厘米以得到立方厘米的体积。
然后；使用展开的纸张的样本，计算纸巾产品的克重或基重。使用染料和印刷机，小心地从纸巾产品中切下六个76.2mm×76.2mm的正方形样本，避免任何网孔。将样本置于105℃的烘箱中5分钟，然后在分析天平上称量至小数点后第四位。以克为单位的样本重量除以(0.0762m)^2以确定以克/平方米为单位的基重。使用单位转换，将其转换为克/平方厘米。
然后，通过将单张纸巾的面积乘以卷中的纸张数来计算纸巾卷中纸的总平方厘米。使用的单位应为平方厘米。
然后，将以平方厘米为单位的卷中纸张面积乘以以克/平方厘米为单位的克重，以获得以克为单位的卷中纸张的重量。
最后，将卷中纸的重量除以纸卷中的纸的体积以获得以克/立方厘米为单位的卷密度。
在示例性实施方式中，外聚合具有相对于捆束小于零的收缩因子。收缩因子确定如下：
a.平行于搭接密封切开外聚合；
b.测量垂直于搭接密封的外聚合的长度；
c.以同一方向测量绕捆束的路径长度(垂直于搭接密封方向，不考虑卷之间的凹陷)；
d.计算收缩因子如下：
收缩因子＝测量的外聚合长度-测量的围绕捆束的路径长度
图32和图33示出根据本发明示例性实施方式的包装的纸巾捆束的不同视图。如图所示，由于背板和热处理的协同效应，外包装材料一般符合捆束内含有的纸巾的形状。虽然未示出，捆束的纸巾也能够以互锁的方式布置，并且行彼此偏移。
尽管在前面的说明书中阐述了本发明的具体实施方式的详细描述，但应该理解，本文给出的许多细节可以被本领域技术人员显着改变而不背离本发明的精神和范围。

Claims (26)

1.一种可装运的捆束产品，包括：
多个纸制品卷，每个纸制品卷都由第一包装材料单独包装并相对于彼此布置以形成捆束，所述捆束由第二包装材料包装，其中所述第二包装材料具有相对于所述捆束小于零的收缩因子，并且所述捆束具有18英寸×14英寸×8英寸的尺寸。
2.根据权利要求1所述的产品，其中所述第一包装材料和所述第二包装材料包括高密度聚乙烯和低密度聚乙烯。
3.根据权利要求2所述的产品，其中与所述第一包装材料相比，所述第二包装材料具有的高密度聚乙烯量更多。
4.根据权利要求1所述的产品，其中所述第二包装材料包括由10-100％聚丙烯组成的一个或多个外层。
5.根据权利要求1所述的产品，其中所述第一包装材料和所述第二包装材料中的至少一者包括聚丙烯膜的层压层。
6.根据权利要求1所述的产品，其中与所述第二包装材料相比，所述第一包装材料具有的防粘连树脂百分占比更高。
7.根据权利要求1所述的产品，其中所述第二包装材料包括在3至5的范围内的多个层。
8.根据权利要求7所述的产品，其中与外层相比，所述第二包装材料的中心层包含的高密度聚乙烯百分占比更高。
9.根据权利要求1所述的产品，其中与所述第一包装材料接触单独包装的所述纸制品卷的一侧相比，所述第一包装材料在与所述第二包装材料接触的一侧上具有较高量的防粘连树脂。
10.根据权利要求1所述的产品，其中所述第二包装材料经受热处理。
11.根据权利要求10所述的产品，其中所述第二包装材料在所述热处理之后具有较低的结晶度。
12.根据权利要求10所述的产品，其中所述第二包装材料在所述热处理之后具有较低的表面积。
13.根据权利要求10所述的产品，其中所述热处理的温度范围在华氏300-400度之间。
14.根据权利要求10所述的产品，其中所述热处理的持续时间在20至45秒之间。
15.根据权利要求1所述的产品，其中所述第二包装材料的抗穿刺性在800-1200gf之间。
16.根据权利要求1所述的产品，其中所述第二包装材料具有1.0至3.5千分之一英寸之间的厚度。
17.根据权利要求10所述的产品，其中所述第二包装材料在热处理之后表现出非均质性。
18.根据权利要求1所述的产品，其中单独包装的所述纸制品卷相对于彼此以交错/互锁堆叠模式布置。
19.一种可装运的捆绑产品，包括：
多个纸制品卷，每个纸制品卷都由第一包装材料单独包装并相对于彼此布置以形成捆束，所述纸制品具有大于400微米的体量，每个纸制品卷具有小于122mm的直径和等于或大于4英寸的卷宽度，所述捆束由第二包装材料包装，其中所述第二包装材料具有相对于所述捆束小于零的收缩因子并且所述捆束具有18英寸×14英寸×8英寸的尺寸。
20.根据权利要求19所述的产品，其中多个所述纸制品卷中的每一个具有在9.5cc/g至12cc/g之间的卷密度。
21.根据权利要求20所述的产品，其中多个所述纸制品卷中的每一个具有小于4mm的Kershaw坚度。
22.一种可装运的捆束产品，包括：
多个纸制品卷，每个纸制品卷都由第一包装材料单独包装并相对于彼此布置以形成捆束，所述捆束由第二包装材料包装，其中所述第二包装材料具有相对于所述捆束小于零的收缩因子和介于120与140摄氏度之间的熔点，并且所述捆束具有18英寸×14英寸×8英寸的尺寸。
23.一种可装运的捆束产品，包括：
多个纸制品卷，每个纸制品卷都由第一包装材料单独包装并相对于彼此布置以形成捆束，所述捆束由第二包装材料包装，其中所述第二包装材料具有相对于捆束小于零的收缩因子
24.根据权利要求23所述的产品，其中所述第二包装材料包括由10-100％聚丙烯组成的一个或多个外层。
25.根据权利要求23所述的产品，其中所述第一包装材料和所述第二包装材料中的至少一者包括聚丙烯膜的层压层。
26.根据权利要求23所述的产品，其中所述第二包装材料包括多个层，所述第二包装材料的中心层包括与外层相比更高百分比的高密度聚乙烯。
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