EP2595595A1 - Emballage de plaquette thermoformée avec surface courbée adhésive - Google Patents

Emballage de plaquette thermoformée avec surface courbée adhésive

Info

Publication number
EP2595595A1
EP2595595A1 EP11720275.4A EP11720275A EP2595595A1 EP 2595595 A1 EP2595595 A1 EP 2595595A1 EP 11720275 A EP11720275 A EP 11720275A EP 2595595 A1 EP2595595 A1 EP 2595595A1
Authority
EP
European Patent Office
Prior art keywords
package
panels
blister
panel
flange
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.)
Withdrawn
Application number
EP11720275.4A
Other languages
German (de)
English (en)
Inventor
Michael P. Wade
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WestRock MWV LLC
Original Assignee
Meadwestvaco Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Meadwestvaco Corp filed Critical Meadwestvaco Corp
Publication of EP2595595A1 publication Critical patent/EP2595595A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B65D73/00—Packages comprising articles attached to cards, sheets or webs
    • B65D73/0078—Packages comprising articles attached to cards, sheets or webs the articles being retained or enclosed in a folded-over or doubled card
    • B65D73/0085—Packages comprising articles attached to cards, sheets or webs the articles being retained or enclosed in a folded-over or doubled card within a window, hole or cut-out portion
    • B65D73/0092—Packages comprising articles attached to cards, sheets or webs the articles being retained or enclosed in a folded-over or doubled card within a window, hole or cut-out portion combined with a preformed enclosure, e.g. a bulb
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/40—Construction of rigid or semi-rigid containers lined or internally reinforced
    • B31B2120/408—Construction of rigid or semi-rigid containers lined or internally reinforced by folding a sheet or blank around an inner tubular liner

Definitions

  • the present application is directed to paperboard packages and more particularly to self-standing features for paperboard packages.
  • Some blister packages may comprise a paperboard card and a blister. Such a package may be suitable for display by hanging from a hook, but may not be well adapted for display in a standing configuration.
  • WO2010068593 describes a package utilizing folds in a paperboard substrate to form various standing
  • the current application discloses additional packages including a package utilizing a curved paperboard substrate.
  • a packaging structure which comprises a first panel and a second panel comprised of sheet material, and a first blister sealed to or formed as part of at least one of the panels, and wherein the first panel and the second panel are sealed together along a curved interface.
  • a packaging structure which comprises a first panel and a second panel comprised of sheet material, and a first blister sealed to or formed as part of at least one of the panels, and wherein the first panel and the second panel are sealed together using radio frequency heating.
  • Fig. 1 A is a top plan view of a blank for a packaging structure
  • Fig. IB is a side perspective view of the blank of Fig. 1A, along with a blister to fit therein;
  • Fig. 2A is a side perspective view of a partially package made from the blank and blister of Fig. IB;
  • Fig. 2B is a side perspective view of a completed package made from the blank and blister of Fig. IB;
  • FIG. 3A is a perspective view of parts for another packaging structure
  • Fig. 3B is a side perspective view of a package made from the parts of Fig. 3A;
  • Fig. 3C is a top perspective view of a package made from the parts of Fig. 3A;
  • FIG. 4A is a perspective view of parts for another packaging structure
  • Fig. 4B is a top perspective view of a package made from the parts of Fig. 4A;
  • Fig. 4C is a cross section view of a package of Fig. 4B.
  • Figs. 5A-5C are cross section views at various elevations of the package of Fig. 4B and a tool for making the package.
  • FIG. 1 A-1D is back panel 120; while the back panel shown in Fig. 3A-3C is back panel 320.
  • panel may also be used to describe a region of a piece of material, for example a portion of the material that is in a first plane, connected across a fold line with the same material in a second plane. Since panels are sometimes superimposed, for example, creating a two-layer structure, like features or panels will sometime coincide, in which cases, descriptions may call out the number identifying the feature closer to the viewer, that is, the feature visible in a particular Figure.
  • Paperboard security packages such as blister packages, are well known by those skilled in the art.
  • Figs. 1 A and IB show plan and perspective views, respectively, of a card 110 for forming a known security package, for example as described in U.S. Patent Application No. 11/924,750.
  • a blister 160 to fit within the card.
  • the blister may be a recycled material such as RPET or a biodegradable material such as PLA.
  • the card may have a back panel 120 and a front panel 140 and one or both of these panels may comprise a hang hole 121, 141. If both panels have hang holes, they may overlap to provide two layers of material to reinforce the hang hole and
  • a reinforcing layer of paperboard or other material may be placed between the front and back panel, for example at the hang hole location, as described in PCT/US08/066517.
  • the front panel may have an aperture 144 to receive the body 162 of blister 160.
  • Blister 160 may have a peripheral flange 164 to be sealably received between the back panel 120 and front panel 140.
  • FIG. 2A shows a perspective view of the package in a partially assembled configuration, with blister 160 placed upon back panel 120, and front panel 140 in the process of being folded over the blister and back panel.
  • the body of blister 160 fits in aperture 144, while the flange 164 becomes sandwiched between front panel 140 and back panel 120.
  • the card 110 (and other cards, sleeves, liners, wraps, etc described herein) may be formed of a sheet material such as paperboard, which may be made of or coated with materials to increase its strength.
  • a sheet material such as paperboard, which may be made of or coated with materials to increase its strength.
  • An example of such a sheet material is
  • the sheet material may have a heat sealable coating, for example to allow a heat seal to be created between the back panel 120 and front panel 140. Alternately, other forms of adhesive may be used to seal these panels together. It should be noted that the use of tear resistant materials, and/or in more than one layer, help to improve the tamper- and theft-resistance of the package.
  • Package 100 may be used to enclose either a loose item of merchandise, or an inner carton enclosing merchandise.
  • a manufacturer may have an existing well established carton with a well-recognized brand image, but lacking adequate security.
  • Such a carton may have a premium appearance, for example custom graphics, metallization, embossing, or other premium features.
  • the premium package is still intact.
  • a manufacturer may wish to enclose an existing carton within package 100, or any of the other security packages described herein.
  • a paperboard based material may be used and for improved theft deterrence a tear resistant paperboard may be used.
  • the standing features described in this application may be used alone or in combination with other package features.
  • Fig. 3A shows a perspective view of parts for forming another standing package.
  • the parts may include back panel 320 with back side panels 320A, 320B; a front panel 340 with front side panels 340A, 340B, and a blister 360 with a blister body
  • One or both of the front and back panels may comprise a hang hole 321, 341. If both panels have a hang hole, they may overlap to reinforce the hang hole and the surrounding area.
  • the front and back panel may be provided with fold, crease or score lines (generally shown, with fold line 320F enumerated as an example).
  • clearance slots 342 may be provided on fold lines.
  • Blister 360 may be provided with blister flange 364 that may be sandwiched from behind by back panel
  • Aperture 344 may be provided in front panel 340 through which blister 360 may protrude.
  • Blister flange 364 while being generally flat may lie in more than one plane.
  • the shape of the blister flange 364, including one or more flange folds, may be used to help retain the finished package in a particular shape.
  • Figs. 3B and 3C show the assembled package in front perspective and top perspective views.
  • the (now hidden) blister flange 364 is shown (dashed lines) sandwiched between the layers of the front panel and back panel.
  • the angle between panels 340, 340A, and 340B, along with the size of the side panels relative to the package and the blister, may be chosen so that the center of gravity of the finished package falls within the "footprint" defined by the front/back panel and the side panels. Thus the package will stand upright and stable. Alternately the package may be displayed hanging from hang hole 341.
  • the hang tab may comprise two or more layers of material. It is to be understood that the hang tab may comprise three or more layers of material. It is to be understood that the exact dimensions of the package may be adjusted based on manufacturing preferences.
  • fold-over panels may be provided on some paperboard panels to strengthen certain areas, for example the hang tab, by adding one or more layers. In such an instance a heavier product may be contained within the package without risk of the hang tab tearing or breaking.
  • These packages may be formed from more than one blank of paperboard material, or the blanks may in some cases be combined. In some cases, the packages may be formed from a single blank of paperboard material. The blank or blanks may in some cases be folded to create the package. In some cases, the packages may be formed using a single layer of paperboard material.
  • Fold lines in certain of the package designs may provide an area through which to initiate a tear.
  • stress diverter features may be provided such as shaped openings along a fold line to divert a tear away from the blister.
  • One or more layers of the paperboard may have one or more overt (visible) or hidden features to help deflect any initiated tear back toward the outside periphery of the package, or otherwise away from the contents.
  • partially-cut lines may be made into a hidden surface such as the inward- facing surface of the front panel or back panel, so that if a tear is initiated, the hidden partially-cut line may divert the tear back toward the edge of the package.
  • tear-diverting features are described in U.S. Provisional Application No. 61/081,404.
  • a tear proof material such as DURAFOLD paperboard will usually need to be opened using a tool such as a knife or scissors. Tear resistant material such as
  • NATRALOCK may be provided with overt or hidden features to assist a customer in opening the package, as described in U.S. Provisional Application No. 61/025,102. Such opening features may be incorporated in any of the packages disclosed herein.
  • front panel 340 and back panel 320 may be adhered together by heat sealing, gluing, or other adhesive.
  • Back panel 320 and front panel 340 may, for example, be paperboard.
  • the panels are shown with substantially the same perimeter, which may yield a package comprised of two layers of paperboard.
  • portions of the package might only be single ply.
  • a more secure package may result if the blister flange 364 is sandwiched between two layers of material.
  • One or both plies may comprise hang hole 341.
  • Heat sealing may be accomplished by use of both heat and pressure. Heat sealing may be used at the juncture of blister flange 364 with the front panel 340 and back panel 320. Heat sealing may also be used along the periphery of front panel 340 and back panel 320. Alternately heat sealing may be used on the entire adjoining surfaces of front panel 340 and back panel 320, including the blister flange 364.
  • Fig. 4A shows a side perspective view of parts for forming another standing package.
  • the parts may include a back panel 420 and a front panel 440.
  • the terms "back” and “front” are not meant to be limiting.
  • the front and back panels may comprise hang holes 421, 441.
  • the package may also comprise front blister 460 with blister body 462 and blister flange 464.
  • the front panel 440 and back panel 420 may be identical or nearly identical as shown in Fig. 4A, thus resulting in a package whose paperboard components are for the most part two-layer. However, certain of the paperboard panels may be omitted, resulting in a package with some single layer areas. It may be advantageous for at least front panel 440 and back panel 420 to be provided so that blister flanges 464 may be sandwiched between layers of paperboard as shown. [0036] The combined front panel 440, back panel 420, and blister 460 may be used to form a curved package, that is, a package with at least one of the front and back panel defining a curved surface in the finished package.
  • the blister flange 464 may be curved so as to easily be sandwiched between front panel 440 and back panel 420 when a curved package is created. Depending on the package design, that is, whether the package is curved toward the front as shown in Fig. 4A, or curved toward the back (not shown). The package may also be curved in other shapes, for example in an S-shape.
  • front panel 440 may have a width W2 slightly less than the width Wl of back panel 420 so as to cause the package edges to be lined up after assembly. The package edges may be trimmed after assembly.
  • Fig. 4B shows a top perspective view of the package in an assembled configuration. It is seen that blister body 462 of blister 460 may fit through aperture 444 in front panel 440.
  • Fig. 4C shows a cross section through the finished package (for example along line 4C in Fig. 4B), which may have a curved shape, for example curved to the front as shown, although a curve toward the back is likewise possible, as is more complex curves such as an S-curved shape.
  • One way to form the package shown in Figs. 4B and 4C is to apply adhesive between the front panel 440 and back panel 420, and then to seal the two panels together trapping the blister flange 464.
  • a heat sealing process may be used, for example applying a front and back platen to the assembly, and applying pressure, with at least one of the front and back platens being heated.
  • a finite time is required for heat to penetrate through the panels 420, 440 and soften the adhesive therebetween.
  • the front and back panels after heat sealing may tend to straighten out if the platen pressure is removed before the adhesive cools.
  • the platens may maintain pressure until the adhesive cools.
  • the hot platen(s) used in such a process means that cooling can be slow. This could result in a relatively slow heat- sealing process.
  • radio frequency (RF) energy may be applied to seal the package by use of a suitable platen or platens.
  • the RF energy (including the wavelength) and the adhesive material may be chosen so that sealing energy is applied without the platens becoming hot, that is, without the platens approaching the melting temperature of the adhesive.
  • the RF energy may be discontinued.
  • the adhesive may then cool quickly and set or solidify, since the platen may operate at a relatively cool temperature and not delay setting of the adhesive.
  • thermal impulse sealing may be used, which involves rapid heat-up and cool-down to speed the sealing process.
  • Figs. 5A-5C show cross section views of front platen 502 and back platen 504 enclosing back panel 420, front panel 440, and blister 460.
  • the cross sections correspond to section lines 5A, 5B, and 5C in Fig. 4B.
  • Fig. 5A shows that at certain elevations of the package, for example the upper edge or lower edge (or the side edges) the back panel 420 and front panel 440 contact each other without any blister flange in between.
  • platens 502, 504 may simply apply pressure and RF energy, for example applying these uniformly across the adjoining surfaces, although the pressure and RF energy need not necessarily be constant across the package.
  • the applied pressure and energy may be adjusted by adjustment of the applied force on the platens and the applied electrical energy, as well as the clearances of the platens and the design of the RF heating equipment. Pressure and energy may be applied evenly across critical seal areas by way of patterned and machined tool surfaces.
  • Fig. 5B shows that at certain elevations of the package, for example the upper edge or lower edge of the blister, the back panel 420 and front panel 440 contact each in some areas without any blister flange in between, and in other areas a blister flange 464A may be sandwiched between the panels.
  • the platens 502, 504 may be designed (for example with appropriate clearances), and the applied force and RF energy may be chosen, to apply the appropriate pressure and RF energy to the differing areas of the package. For example it may be desired to leave enough platen clearance in areas enclosing blister flange 464A, to prevent thinning of the flange in instances where the RF heating may temporarily melt or soften the flange material. However, in some instances a small amount of thinning may be tolerated or even desired, in which case less platen clearance might be chosen.
  • Fig. 5C shows that at certain elevations of the package, for example the central areas of the blister, the back panel 420 and front panel 440 contact each in some areas without any blister flange in between, while in other areas a blister flange 464B may be sandwiched between the panels, and yet in other areas (e.g. the main part of the blister) there may be no contact between any of the three components (front panel, back panel, or blister).
  • the platens 502, 504 may be designed (for example with appropriate clearances), and the applied force and RF energy may be chosen, to apply the appropriate pressure and RF energy to the differing areas of the package.
  • the platens may be designed so that in the area of flange 464B there is higher pressure and / or RF energy to ensure sealing in that area.
  • it may be desired to have little or no pressure and /or RF heating of blister body 462.
  • the front platen 502 may be designed with a platen cavity 510 to receive blister body 462.
  • the platen cavity 510 may be slightly oversized to avoid contact with blister body 462. It may be appreciably oversized to allow the platen to be used with blisters with various depths of blister body 462.
  • the back panel 420, blister 460, and front panel 440 may be placed between platens 502, 504.
  • the platens may then be closed and RF energy applied to seal the panels and blister together. Pressure may be applied to the platens.
  • the adhesive between platens 502, 504 may be chosen with suitable properties, that is, susceptibility to RF heating, suitable melting point range, suitable strength, etc.
  • RF energy may only be applied for a short duration and preferably the platens may not themselves become very hot, so as to hasten the set time of the adhesive in order to allow a short cycle time.
  • the front panel 440 and or back panel 420 may be made of a sheet material, for example paper or paperboard.
  • a suitable material is MeadWestvaco
  • NATRALOCK® board This board delivers excellent RF sealing efficiency and bond strength.
  • NATALOCK® GTR board uses a BPET (branched polyethylene
  • terephthalate film for tear resistance and a low temperature heat seal coating.
  • the BPET film contains a molecular structure that is excited when RF energy is passed through. This results in a low temperature adhesive (activated around 160°F to 180°F) which means the adhesive may be activated without applying excessive heat.
  • the properties of the BPET film and its low heat seal temperature allow the RF sealing process to achieve sealing without a thermal energy pre -heat cycle.
  • RF sealing of NATRALOCK requires only internal activation of the coating between the front and back panels. This is an advantage particularly when sealing non-flat shapes since the internal stresses of sealing non-flat shapes tends to break the freshly activated seal surfaces if excess heat from conventional thermal sealing is required to dissipate.
  • Another advantage of RF sealing a non-flat package is a short cool down phase of the sealing cycle.
  • the platens hold pressure on the sealed package for a set time to allow the internal bond to cure and gain strength.
  • a short cool down phase is advantageous.
  • NATRALOCK The ability to seal blister card style packages in curved or three dimensional shapes creates a visual effect that may not be possible with two dimensional packages.
  • the composition of the NATRALOCK substrate makes the RF sealing process efficient and seals secure.
  • NATRALOCK' s heat seal coating reacts to the RF energy allowing the RF cycle to activate the heat seal and the cool down cycle allows the seal layer to bond maintaining shape after package is released from the platens or other sealing tool.
  • the bond strength of NATRALOCK tear resistant board gives a peel force of five to six lbs-force per inch which is good enough for a "fiber tear" (strong) bond.
  • Examples of materials and processes from which the exemplary packages may be formed are discussed in greater detail in U.S. Ser. No. 11/545,842 filed on October 11, 2006, the entire contents of which are incorporated herein by reference.
  • NATRALOCK paperboard as well as other types of paperboard or plastic materials.
  • the packages may be made of one or more layers of material, including but not limited to one, two, three or more layers of material. Different parts of the packages may comprise different materials and/or different numbers of layers.
  • the packages disclosed herein may be comprised mostly of paperboard, for example as described in International Application PCT/US08/051245.
  • the paperboard used in such packages may be tear-resistant as described in commonly assigned US Patent No. 7,144,635.
  • the packages disclosed herein may be made from one or several blanks (that is, the cut sheet parts from which the package components are made by folding and other steps). However, it should be understood that certain unitary blanks may be provided instead as more than one part, and certain blanks may be combined into single blanks, while still arriving at the same finished package.
  • the blanks may be assembled in various stages, including assembling a unitary blank into a package, assembling separate blanks and then joining them to form a package, and joining two or more blanks together, for example by heat sealing, gluing, mechanical fastening, or otherwise and then forming the combined blanks into the package.
  • certain packages may be one continuous piece of material, and other packages may comprise two or more pieces of material. It is to be understood that a package may be heat sealed even where a heat sealed surface is in contact with a non-heat sealable surface. It is to be understood that in such a situation such an adhesion will strengthen the package, though it may not strengthen it as much as heat sealing between two heat sealable surfaces.
  • the packages described herein may be assembled in stages at various locations, for example partially constructing the package, moving or shipping it to one or more other locations, and completing the assembly of the package.
  • a package may be formed into a flattened or collapsible structure, then moved or shipped to another location for final forming, filling, and closure.
  • the packages may be shipped flat and erected when the product is filled or it may be shipped with the tray formed such that the heat sealing only needs to be performed at the edges of the package. It is to be understood that alternate sealing methods may be utilized depending upon manufacturing preferences, and that the package designs may still increase tear resistance in such a case, without the heat sealing. It is to be understood that using heat sealing with the package designs described herein may further increase the tear resistance of the packages.
  • Portions of the packages may be made of one, two, or more layers of material. It is to be understood that additional layers of material may be used based on manufacturing preferences. Portions of certain panels may be folded over or around the portions of other panels, creating multiple layers of material.
  • the packages may be provided with overt or hidden features to assist a customer in opening the package, as described in U.S. Provisional Application No. 61/025,102. Such opening features may be incorporated in any of the packages disclosed herein.
  • the packages may be provided with features to allow opening as described in US Provisional Application 61/025,102.
  • Such features may include overt or hidden weakened areas in the package.
  • Such features may include a cut or nick in the periphery of the package, by which to initiate a tear.
  • Such a tear initiation feature may be covered by a security device.
  • the disclosed blister packaging structures may provide a theft deterrent function at least for a few moments, while providing legitimate consumers with packages easy to open in a reasonably short time, for example using a pair of scissors and reducing the risk of injury as the scissors are less likely to slip on the NATRALOCK or paperboard like material than on the plastic blister pack.
  • any of the materials used in these designs could be provided with overt or hidden features such as nicks, scores, perforations, holes, or other diverting features such that if a tear is initiated in the packaging material, it will not propagate in a direction more likely to breach the package, but may be rerouted by the diverting feature or features in a direction less likely to breach the package.
  • the diverting feature may stop the tear, slow the progression of the tear, or cause it to take a meandering path, thus lengthening the time it may take to eventually breach the package, and thereby discouraging a thief.
  • PCT/US08/066517 The packages may be made to stand upright, either by their general shape, or for example by providing "feet" on the lower portion of blister 160, as described in International Application PCT/US06/030280. Although various aspects of the disclosed blister packaging structures have been shown and described,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

La présente invention concerne un emballage comprenant une plaquette thermoformée (360) fixée à une feuille de carton, où la feuille de carton a une forme courbée.
EP11720275.4A 2010-07-19 2011-05-11 Emballage de plaquette thermoformée avec surface courbée adhésive Withdrawn EP2595595A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36546610P 2010-07-19 2010-07-19
PCT/US2011/036016 WO2012012015A1 (fr) 2010-07-19 2011-05-11 Emballage de plaquette thermoformée avec surface courbée adhésive

Publications (1)

Publication Number Publication Date
EP2595595A1 true EP2595595A1 (fr) 2013-05-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11720275.4A Withdrawn EP2595595A1 (fr) 2010-07-19 2011-05-11 Emballage de plaquette thermoformée avec surface courbée adhésive

Country Status (4)

Country Link
US (1) US20120012491A1 (fr)
EP (1) EP2595595A1 (fr)
CN (1) CN102985045A (fr)
WO (1) WO2012012015A1 (fr)

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CN102985045A (zh) 2013-03-20
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