EP2817239B1 - Unitized package - Google Patents

Unitized package Download PDF

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Publication number
EP2817239B1
EP2817239B1 EP13707518.0A EP13707518A EP2817239B1 EP 2817239 B1 EP2817239 B1 EP 2817239B1 EP 13707518 A EP13707518 A EP 13707518A EP 2817239 B1 EP2817239 B1 EP 2817239B1
Authority
EP
European Patent Office
Prior art keywords
laminate barrier
barrier layer
base card
unitized package
laminate
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.)
Active
Application number
EP13707518.0A
Other languages
German (de)
English (en)
French (fr)
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EP2817239A1 (en
Inventor
Steven J. Greenland
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.)
AKI Inc
Original Assignee
AKI Inc
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47790537&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2817239(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US13/404,421 external-priority patent/US9272830B2/en
Application filed by AKI Inc filed Critical AKI Inc
Publication of EP2817239A1 publication Critical patent/EP2817239A1/en
Application granted granted Critical
Publication of EP2817239B1 publication Critical patent/EP2817239B1/en
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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
    • B65D73/0007—Packages comprising articles attached to cards, sheets or webs the articles being attached to the plane surface of a single card
    • B65D73/0028—Packages comprising articles attached to cards, sheets or webs the articles being attached to the plane surface of a single card by means of adhesive, heat-seal or the like
    • 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
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/08—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of fluid pressure
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/065—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting by punching out
    • 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
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • B65B9/042—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material for fluent material
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
    • B65D75/5811—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness and defining, after tearing, a small dispensing spout, a small orifice or the like

Definitions

  • the invention generally relates to unitized packages for containing and dispensing a product material comprising the features of the preamble of claim 1.
  • the unitized packages comprise a printed base card and a fluid vessel permanently bonded to a portion of the base card.
  • the fluid vessel comprises a first laminate barrier layer comprising at least one layer of a biaxially oriented thermoplastic polymer, a portion of which is formed into a modified dome shape, and a planar second laminate barrier layer.
  • the invention also relates to methods of making such unitized packages.
  • Squeezable containers are used in packaging and dispensing various formulations of cosmetic, personal care and household products.
  • Metal tubes are an example of such containers.
  • Metal tubes are airtight and therefore afford protection to the product materials contained in the tubes through long periods of storage.
  • metal, such as aluminum foil is difficult to form and the manufacturing of metal tubes is often costly.
  • Squeezable containers have also been fabricated with plastics. Though relatively inexpensive to manufacture, plastic containers do not provide the same level of protection to the product materials as the metal tubes provide due to the permeability of the plastic. As a result, shelf life of the product materials contained in plastic containers is often shorter.
  • Flexible packages or pouches such as those used for condiments, are another example of squeezable plastic container. More recently, small volume pouches have been fabricated to include a header section that is flat and unfilled with the product materials to expand their visual presence and graphic message. However, such flexible pouches have a number of drawbacks. For example, the header section of the flexible pouches lacks sufficient rigidity and causes thermal distortion. Additionally, since the product materials are generally distributed throughout a largely two dimensional area, it is difficult to produce desired fluid flow of the product material toward the opening of the pouches. Dispensing high viscosity fluids is particularly problematic.
  • flexible pouches require a greater surface area to store a given volume of the product material, which is often accompanied by greater vapor transmission through the surface area, a greater tendency for phase separation (particularly if the product material is an emulsion), and a greater potential of losing the product material due to scalping by thermoplastic packages.
  • small volume squeezable containers often suffer from lack of visual appeal and difficulty in retail placement.
  • such squeezable containers lack enough surface area to accommodate textual or graphic messages for promotional or instructional purposes.
  • they must be packaged with a secondary container such as a printed carton or a blister pack that bears the requisite textual or graphic messages.
  • a secondary container such as a printed carton or a blister pack that bears the requisite textual or graphic messages.
  • the promotional or instructional messages printed on the secondary container are often overlooked or lost prior to the time of use.
  • EP 2 289 816 A1 relates to unitized packages for containing and dispensing a product material.
  • the unitized packages comprise a printed base card and a fluid vessel permanently bonded to the printed base card.
  • the fluid vessel comprises a first laminate barrier layer comprising at least one layer of a biaxially oriented thermoplastic polymer, a portion of which is formed into a modified dome shape, and a planar second laminate barrier layer.
  • the first and second laminate barrier layers are sealed together to form a fluid-tight enclosure, wherein the product material substantially fills the enclosure and the modified dome shape is resiliently sustainable.
  • the present invention is defined by the features of the appended claims and provides a unitized package which includes a base card and a fluid vessel that is permanently bonded to a portion of the base card.
  • the unitized package comprises the features of claim 1, namely printed base card and a fluid vessel.
  • the fluid vessel comprises a first laminate barrier layer comprising at least one layer of a biaxially oriented thermoplastic polymer, a product material, and a second laminate barrier layer. A portion of the first laminate barrier layer is formed into a modified dome shape with a defined volume. The product material substantially fills the defined volume.
  • the first laminate barrier layer and the second laminate barrier layer are sealed together at their perimeters to form a fluid-tight enclosure for containing the product material.
  • the second laminate barrier layer of the fluid vessel is permanently bonded to a portion of the printed base card.
  • the modified dome shape of the first laminate barrier layer is resiliently sustainable when the fluid vessel is sealed.
  • the biaxially oriented thermoplastic polymer may comprise a polyethylene, a polypropylene, a polyester, a polyamide, a polyarylate, or a mixture thereof.
  • the biaxially oriented thermoplastic polymer comprises polyethylene terephthalate.
  • one or both of the first and second laminate barrier layers comprise a layer of aluminum foil.
  • the aluminum foil is less than about 0.025 mm (0.001 inches) in thickness.
  • the product material is preferably a liquid.
  • the fluid vessel further comprises a dispensing tip.
  • the base card comprises an opening strip defined by a line of perforation that intersects the dispensing tip. Once the opening strip is removed, the product material may be dispensed from the dispensing tip.
  • the fluid vessel also comprises a planar extension tab formed by the first and second laminate barrier layers. The extension tab encloses the dispensing tip and overlays the opening strip. The dispensing tip also may be reclosable.
  • the base card is less flexible than the first laminate barrier layer of the fluid vessel.
  • the base card may comprise paper stock.
  • one or both surfaces of the base card may be printed with any promotional or instructional messages for marketing or regulatory compliance purposes.
  • the unitized package is reclosable. It comprises a printed base card; and a fluid vessel comprising (i) a first laminate barrier layer comprising at least one layer of biaxially oriented thermoplastic polymer, (ii) a product material, and (iii) a second laminate barrier layer.
  • the first and second laminate barrier layers are sealed together at their perimeters to form a fluid-tight enclosure for containing the product material.
  • the second laminate barrier layer is permanently bonded to a portion of the printed base card.
  • the fluid-tight enclosure comprises a dispensing tip and the printed base card comprises a score line that intersects the dispensing tip.
  • the score line defines a folding flap that when folded along the score line reclosably seals the dispensing tip.
  • the printed base card of the unitized package comprises one or more locking tabs capable of receiving the folding flap.
  • the thickness of the printed base card is about 0.203 mm (0.008 inches) or greater or about 0.254 mm (0.010 inches) or greater.
  • the first and second laminate barrier layers each have an inner surface.
  • the dispensing tip is defined by portions of the inner surface of the first and second laminate barrier layers.
  • the thickness of the printed base card is such that when the folding flap is folded along the score line to form a fold having a tension zone, the portions of the inner surfaces of the first and second laminate barrier layers that define the dispensing tip fall substantially outside the neutral point of the fold and in the tension zone.
  • a portion of the first laminate barrier layer has a modified dome shape formed therein.
  • the modified dome shape has a defined volume, and the product material substantially fills the defined volume.
  • the second laminate barrier layer is planar.
  • the method includes providing a printed base card, fabricating a fluid vessel comprising a first laminate barrier layer and a second laminate barrier layer, and permanently bonding the fluid vessel to the printed base card.
  • the fluid vessel is fabricated by: (i) forming a portion of the first laminate barrier layer, which comprises at least one layer of a biaxially oriented thermoplastic polymer, into a modified dome shape with a defined volume; (ii) depositing a product material onto the first laminate barrier layer such that the product material substantially fills the defined volume; (iii) disposing the second laminate barrier layer, which is planar, on the first laminate barrier layer; and (iv) sealing the first and second laminate barrier layers together at their perimeters to form a fluid-tight enclosure for containing the product material.
  • the modified dome shape of the first laminate barrier layer is resiliently sustainable when the fluid vessel is sealed.
  • the biaxially oriented thermoplastic polymer may comprise a polyethylene, a polypropylene, a polyester, a polyamide, a polyarylate, or a mixture thereof.
  • the biaxially oriented thermoplastic polymer comprises polyethylene terephthalate.
  • one or both of the first and second laminate barrier layers comprise a layer of aluminum foil.
  • the aluminum foil is less than about 0.0254 mm (0.001 inches) in thickness.
  • first and second laminate barrier layers are sealed together by heat sealing. In another embodiment, the first and second laminate barrier layers are bonded together using radio frequency energy, sonic energy, or an adhesive.
  • the modified dome shape of the first laminate barrier layer is formed by applying gas pressure to a portion of the first laminate barrier layer.
  • the gas pressure may be about 1.03 bar (15 psi) to about 9.65 bar (140psi), and the gas pressure may be applied for a time period ranging from about 0.01 seconds to about 1.0 seconds.
  • the fluid vessel further comprises a dispensing tip.
  • the base card is die cut to form an opening strip defined by a line of perforation.
  • the opening strip once removed, allows access to the product material from the dispensing tip.
  • the first and second laminate barrier layers are sealed together at their perimeters to form the fluid-tight enclosure and a planar extension tab.
  • the extension tab encloses the dispensing tip and overlays the opening strip.
  • the dispensing tip also may be reclosable.
  • the present invention thus provides an improved squeezable package.
  • a formed biaxially oriented thermoplastic polymer is used to fabricate the present unitized package.
  • a biaxially oriented thermoplastic polymer offers several advantages over other plastic materials traditionally used in thermoformed containers, e . g ., it provides for superior barrier characteristics relative to its thickness and cost benefit.
  • biaxially oriented thermoplastic polymer is routinely rejected in known forming processes, largely because its use requires a substantially greater force to form into a desired shape and the obtainable formed profile is severely limited.
  • a laminate barrier layer comprising at least one layer of a biaxially oriented thermoplastic polymer can be sufficiently formed using the forming process disclosed herein to provide a modified dome shape without exceeding the ultimate tensile value of the biaxially oriented thermoplastic polymer, thus preserving its superior barrier characteristic. Additionally, the present forming process increases the degree of the biaxial orientation and resistance to further deformation of the biaxially oriented thermoplastic polymer. As a result, the formed modified dome shape can be resiliently sustained by the product material and/or gases contained in the unitized package until the time of use.
  • the present unitized package generally comprises a printed base card and a fluid vessel permanently bonded to a portion of the base card.
  • the fluid vessel comprises a first laminate barrier layer and a second laminate barrier layer enclosing a product material.
  • the first laminate barrier layer comprises at least one layer of a biaxially oriented thermoplastic polymer, and a portion of the first laminate barrier layer is formed into a modified monolithic dome shape.
  • the second laminate barrier layer is planar.
  • Fig. 1a shows a first embodiment of the present unitized package.
  • the unitized package 10 includes a printed base card 20 and a fluid vessel 30.
  • Fig. 1b shows a cross-sectional view of the unitized package 10 in Fig. 1a along A-A.
  • the fluid vessel 30 comprises a first laminate barrier layer 40 and a second laminate barrier layer 50.
  • the first laminate barrier layer 40 has an inner surface 42 and an outer surface 44.
  • the second laminate barrier layer 50 has an inner surface 52 and an outer surface 54.
  • the inner surface 42 of the first laminate barrier layer 40 and the inner surface 52 of the second laminate barrier layer 50 are sealed together at their perimeters, forming a fluid-tight enclosure 60.
  • a product material 70 substantially fills the volume of the fluid-tight enclosure 60.
  • the first and second laminate barrier layers are barrier layers, i . e ., they are substantially inert and preferably impermeable to the product material contained in the fluid vessel in order to substantially prevent migration of components of the product material through the layers.
  • Various types of plastic film with barrier property e.g ., polyethylene terephtalate ("PET"), celluloses or acetates, may be used to fabricate the laminate barrier layers.
  • PET polyethylene terephtalate
  • the laminate barrier layers may also incorporate specialty vapor barrier coatings to impart or enhance their barrier characteristics.
  • a material that does not possess barrier properties may be coated or treated in order to give it barrier properties so that the material may be used to form the laminate barrier layers.
  • a barrier material may be chosen which is a barrier to, for example, oil, gas, water vapor, aroma, or oxygen.
  • the first laminate barrier layer and the second laminate barrier layer of the unitized package are preferably constructed with thin flexible thermoplastic barrier laminations.
  • the first laminate barrier layer comprises at least one layer of a biaxially oriented thermoplastic polymer.
  • a biaxially oriented thermoplastic polymer is a polymer that has been stretched in two directions (i.e ., the machine direction and cross-machine direction) under conditions that result in the reorientation of the polymer. As a result of such polymer orientation, the barrier characteristics and the physical strength of the polymer are improved.
  • a biaxially oriented thermoplastic polymer has a substantially high tensile strength in either machine or cross machine direction, and is generally resistant to further elongation.
  • Suitable biaxially oriented thermoplastic polymers include, but are not limited to, polyesters, polyamides which includes nylons and amorphous polyamides, polyarylates, polypropylenes, polyethylenes, or mixtures thereof.
  • a preferred biaxially oriented thermoplastic polymer is a polyester such as polyethylene terephthalate (PET), sold under the trade name MYLAR ® manufactured by DuPont Tejlin Films, due to the comparable strength and elongation characteristics of the polyester film along both machine and cross machine directions.
  • PET polyethylene terephthalate
  • MYLAR ® manufactured by DuPont Tejlin Films
  • Other preferred biaxially oriented thermoplastic polymers include, but are not limited to, polyamides such as nylon film, sold under the trade name Capran Emblem ® manufactured by Honeywell, and biaxially oriented polypropylene films (BOPP) such as those manufactured by Exxon-Mobil.
  • first and second laminate barrier layers may each comprise more than one layer of composite materials.
  • the first and second laminate barrier layers may also each incorporate metallic, semi metallic, metal oxide or ceramic materials to improve the moisture-vapor characteristics of these layers.
  • Examples of such lamination construction may include those manufactured in accordance with U.S. Military specification Mil-B-131 Class I, as well as many commercial laminations such as those used for medical diagnostic testing or distribution of food service condiments.
  • the first and the second laminate barrier layers may each comprise a layer of thin gage metal.
  • the metal layer such as an aluminum foil layer, provides for low moisture vapor transmission rates that are desired in squeezable containers. Any aluminum grades may be used, though those that are more malleable are preferred.
  • a particularly preferred aluminum is a thin gage aluminum layer which does not cause loss of the desirable resilient characteristics of the sealed fluid vessel, is not easily dented or otherwise damaged in transportation, and yet provides the desired reduction in moisture vapor or oxygen transmission rate.
  • the first laminate barrier layer may comprise an inner thermoplastic heat seal layer with thickness in the range of about 0.0127 mm (0.0005 inches) to about 0.1016 mm (0.0040 inches) and an outer layer of a biaxially oriented thermoplastic polymer film with thickness in the range of about 0.0102 mm (0.0004 inches) to about 0.0508 mm (0.002 inches).
  • a supplemental barrier layer preferably an aluminum foil layer, with thickness in the range of about 0.00686 mm (0.00027 inches) to about 0.0254 mm (0.001 inches) may also be included between the heat seal layer and biaxially oriented thermoplastic film.
  • the outer layer is constructed with a biaxially oriented polyester polymer film with thickness in the range of about 0.01219 mm (0.00048 inches) to about 0.02337 mm (0.00092 inches).
  • the second laminate barrier layer may have the same or different compositions as the first laminate barrier layer. Because the second laminate barrier layer is not formed, use of a biaxially oriented thermoplastic film in the structure is not required.
  • the first laminate barrier layer 40 has a modified monolithic dome shape formed therein.
  • modified monolithic dome shape or “modified dome shape”, as used in this application, refer to any suitable three-dimensional protrusion with a smooth surface from a planar base, and include, but are not limited to, a hemisphere shape, a low profile sphere shape ( e . g ., the height of the profile is less than the radius of the base in the case of a circular base), or a torus shape.
  • the modified dome shape is a low profile sphere shape, such as that shown in Fig. 1b .
  • the planar base of the modified dome shape may have any desired shape, preferably a rounded shape, and any desired dimensions.
  • the modified dome shape in Fig. 1a has a circular base.
  • Other suitable bases of the modified dome shape include, but are not limited to, ovals, ellipses or simple squares or rectangles with soft radius corners (as shown in Fig. 2 ).
  • any portions of the first laminate barrier layer that do not have the formed modified dome shape are preferably planar.
  • the second laminate barrier layer is also planar.
  • the product material may be any material that is suitable to be packaged and distributed in a unitized package.
  • the product material is a substantially unadulterated cosmetic, personal care product, medical product, or household product. Examples include face cream, shampoo, toothpaste, liquid medicine, and detergent.
  • Substantially unadulterated products include any product materials presented in their original or natural form, without being altered in any significant way.
  • the product material may be presented in any suitable form, such as in a gel form, in a powder form, in microcapsules, contained in a matrix material, or, preferably, in a liquid form.
  • the product material may comprise volatile and/or non-volatile components.
  • the quantity or volume of the product material may be suitable as a sample, or for single or multiple uses.
  • the product material substantially fills the volume defined by the modified dome shape of the first laminate barrier layer.
  • the first and second laminate barrier layers 40 and 50 are sealed together at their perimeters. As shown in Fig. 1b , the inner surface 42 of the first laminate barrier layer 40 and the inner surface 52 of the second laminate barrier layer 50 are sealed together at their perimeters, forming a fluid-tight enclosure 60 for containing the product material 70.
  • the seal may be formed using any suitable method, such as by heat sealing, by radio frequency or sonic energy, or by adhesives. Preferably, the seal is a hermetic permanent seal. Permanent seals, also referred to as destruct or tear bonds, may be formed by the methods described above.
  • Adhesives must be compatible with the product material, i.e ., they should not react or become plasticized when they come into contact with the product material or components of the product material. Such reaction may cause undesirable deterioration of the product material or the seal.
  • At least one of the inner surfaces 42 and 52 comprises a pressure sensitive adhesive, such as a low odor pressure sensitive adhesive that has been applied from a water borne emulsion.
  • the pressure sensitive adhesive may cover the entire contact area between the first laminate barrier layer and the second laminate barrier layer.
  • the adhesive may be applied in a specific pattern of lines or dots.
  • Another example is specialty grades of hot melt adhesive, especially those that can provide a cross link functionality.
  • adhesives may be formulated to provide additional barrier properties.
  • Such adhesives may contain agents such as oxygen scavengers or consist of film-forming precursors of high-barrier materials, such as latex-grade polyvinylidene chloride (PVdC).
  • the unitized package 10 also must be provided with a means for opening the fluid vessel 20, such as by tearing one of the first laminate barrier layer or the second laminate barrier layer, or both.
  • the opening means may include a dispensing tip 100 as shown in Fig. 1a , a notch or a string to originate or facilitate the tear.
  • the opening means may also be reclosable or resealable.
  • the product material 70 substantially fills the volume of the enclosure (i.e., the volume defined by the modified dome shape of the first laminate barrier layer), and leaves minimal head space (i.e., the space that is occupied by ambient air) in the enclosure.
  • the product material especially when in fluid form, and other fluids (i.e., liquid or gas) in the enclosure if any, provide internal pressure and force to sustain the formed shape of the first laminate barrier layer.
  • the formed modified dome shape of the first laminate barrier layer is resiliently sustainable, i.e., the layer will show minor pressure deformation when force is applied to its outer surface, but will substantially self restore to its original shape on release of the force. Also once formed and sealed, the fluid vessel is resistant to flexing and may contribute to the rigidity of the base card.
  • the inner surface 42 of the first laminate barrier layer 40 is heat sealed to the inner surface 52 of the second laminate barrier layer 50 prior to bonding the fluid vessel 30 to the base card 20 .
  • the outer surface 54 of the second laminate barrier layer 50 is permanently bonded to a portion of the base card 20 .
  • the second laminate barrier layer may be bonded with a laminating adhesive, or by any other suitable attachment means, such as by adhesives activated by heat, moisture, pressure, drying or radiation curing.
  • a full bleed adhesive system is incorporated into the outer surface 54 of the second laminate barrier layer 50.
  • the full bleed adhesive system comprises a permanent pressure sensitive adhesive such as a permanent pressure sensitive acrylic adhesive.
  • the permanent pressure sensitive adhesive may be covered and protected by a release liner such as a disposable silicone coated release liner.
  • any desired material may be used for fabricating the base card. Since the enclosure formed by the first and second laminate barrier layers is fluid tight and also is preferably formed prior to bonding to the base card, the base card material will not be exposed to the product material contained in the enclosure; nor will it be exposed to the heat or other energies used for sealing the first and second laminate barrier layers. Suitable materials for the base card include but are not limited to paper such as cover grade or light gage tag stock. Synthetic paper or other plastic materials may also be used.
  • the base card comprises a paper stock for environmental reasons and overall cost efficiency. Paper of varying grades and compositions, including recycled, colored, textured, coated, or uncoated, may be used.
  • the base card is fabricated from grades of solid bleached sulfite paperboard or coverstocks, and has a thickness in the range of about 0.152 mm (0.006 inches) to about 0.610 mm (0.024 inches).
  • the base card may also be coated with various water based or energy cured polymer coatings, or overlaminated with thermoplastic films to protect the paper and any printed graphics from humidity damage.
  • the base card has a sufficiently large surface area extending beyond the fluid vessel so that any desired advertising artworks, texts, graphics, product information or instructions, or drug ingredient information may be printed on any surface of the base card.
  • the fluid vessel may be positioned or sized such that sufficient surface area on the base card is available to achieve brand promotion, consumer education, or compliance with any applicable regulatory requirements such as those imposed by the U.S. Food and Drug Administration. Since the fluid vessel is permanently bonded to the printed base card, the presence of any product marketing or instructional information printed on the base card is ensured at the time of use.
  • the printed base card may be of any suitable dimension or configuration as long as there is a planar surface to which the fluid vessel may be permanently bonded. As shown in Fig . 1a , the printed base card may be planar. The printed base card may also be scored or otherwise folded to form a common 4 or 6 page format. Such configuration functions to substantially increase the usable surface of the base card, while limiting the finished dimensions. The printed base card may also be folded such that it can stand up vertically. The base card may also comprise a portion of a panel incorporated as a portion of a die cut box or a greeting card. As a further example, the folded base card may provide reduced finished dimensions to facilitate placement of the unitized package into an existing host container or to fall within the scope of desired U.S. Postal mailing dimensions. The base cards may also contain a hang hole for retail peg display purposes.
  • the printed base card 20 may have an opening strip 80 defined by a line of perforation 90 intersecting the dispensing tip 100.
  • the opening strip 80 is removed by tearing or cutting along the line of perforation 90, the fluid vessel 30 will be opened, thus allowing access to the product material 70.
  • the fluid vessel 30 may also comprise a planar extension tab 110 which is permanently bonded to the printed base card 20.
  • the extension tab 110 is formed from the first laminate barrier layer 40 and the second laminate barrier layer 50.
  • the dispensing tip 100 is enclosed between the lower edge 112 and the upper edge 114 of the extension tab 110.
  • the extension tab 110 overlays the opening strip 80, with its lower edge 112 and the line of perforation 90 on the printed base card 20 being superimposed.
  • the extension tab 110 and the opening strip 80 will both be removed, and the product material 70 may be accessed.
  • the printed base card may also incorporate a reclosable or resealable feature for the fluid vessel.
  • the manufacturing method and unitized design of the current invention is highly advantageous in achieving this desirable function.
  • the manufacturing cost and reliability of the closure provided by this embodiment is highly effective as compared to that of prior devices.
  • the printed base card may incorporate two lines intersecting the dispensing tip 100.
  • the first line 120 is a perforation and defines an opening strip 80.
  • the second line 130 is a score line and defines a folding flap 140.
  • the distance between the two lines may be any desired distance. In certain embodiments, the distance is preferably about 6.35 mm (0.25 inches) or greater, or about 12.7 mm (0.5 inches) or greater.
  • the printed base card of the product embodiment shown in Fig. 2 may be of any thickness determined to adequately provide the required rigidity and thickness to insure function.
  • the thickness of the printed base card is about 0.127 mm (0.005 inches) or greater; about 0.203 mm (0.008 inches) or greater; or about 0.254 mm (0.010 inches) or greater.
  • Re-closing of the fluid vessel is accomplished by folding the printed carrier card and corresponding dispensing tip along the score line 130.
  • the folding flap 140 is folded or bent so that the printed carrier card completely folds back on itself.
  • Alternative designs also include folding or bending of the carrier card to form a right angle.
  • the printed carrier is designed in such a way to insure that after bending, the dispensing tip of the fluid vessel is on the outside corner of the fold.
  • the base card further contains design means of retaining the printed carrier in a bent state in order to insure sustained tension of the flexible barrier layers and proper sealing.
  • the base card further contains at least one locking tab 145.
  • Various alternative means for retaining the printed carrier in a folded state may be used in addition to the embodiment illustrated in Fig . 2 without departing from the spirit of the invention.
  • pressure sensitive tape tabs, dead fold wire closures, strings and buttons, loops and hooks can be used.
  • the score fold line 130 can also be retained by incorporation of printed carrier designs that include compound folds, or slide and sleeve designs.
  • Figs. 5a to 5d illustrate how a folding flap of a unitized package is folded or bent and inserted into one or more locking tabs.
  • Fig. 5a shows a unitized package 10 having two lines that intersect the dispensing tip 100.
  • the line of perforation 120 defines an opening strip 80.
  • the score line 130 defines a folding flap 140.
  • the opening strip 80 has been removed along the line of perforation 120.
  • the folding flap 140 is folded along the score line 130 to reclosably seal the dispensing tip 100, which prevent the product contained in the fluid-tight enclosure 60 from being released from the enclosure.
  • the dispensing tip can be unsealed by unfolding the fold.
  • the dispensing tip can be sealed and unsealed repeatedly.
  • the folding flap 140 is inserted into one or more locking tabs 145. In other embodiments, the folding flap does not have to be inserted into any locking tabs.
  • Folding of the printed carrier and mounted dispensing tip places the first and second laminate barrier layers of the vessel in a state of static tension around the radius of the bend.
  • the thickness of the printed carrier is most desirably selected with the intent of placing the portions of the inner surfaces of the flexible barrier layers that define the dispensing tip or nozzle to fall substantially outside the neutral point of the fold and in the tension zone of the unitized package at score line 130 .
  • the primary tension applied to the laminate barrier layer is in a direction perpendicular to the score line 130, there is also a tendency for a secondary physical response resulting in the laminate barrier layer(s) to also come under tension in the direction parallel to the score line 130.
  • This secondary tension advantageously serves to further smooth and tighten the portions of the inner surfaces of the first and second laminate barrier layers that define the dispensing tip or nozzle. The result is a fluid tight mechanical closure able to resist penetration or migration by even low viscosity fluid materials.
  • Fig. 6a shows an embodiment of a unitized package 10, which comprises a dispensing tip 100.
  • a portion of the inner surface of the first laminate barrier layer 42a and a portion of the inner surface of the second laminate barrier layer 52a define the dispensing tip 100 .
  • the printed carrier or base card 20 has a score line 130.
  • the folding flap 140 is folded along the score line 130 to form a fold or bend 130a. When the folding flap 140 is folded, the portions of the inner surfaces of the first and second laminate barrier layers that define the dispensing tip 42a, 52a come into contact with each other along an interface 133.
  • Fig. 6C is an enlarged view of the fold 130a of Fig . 6b .
  • the first and second laminate barrier layers 40, 50 are in tension and the printed carrier 20 is under compression.
  • the thickness of the printed carrier 20 is selected such that portions of the inner surfaces of the first and second laminate barrier layers that define the dispensing tip 42a, 52a fall substantially outside the neutral point of the fold 130a, (which is not under tension or compression), and in the tension zone of the unitized package at score line 130.
  • the practical application of a reclosable feature in an embodiment of the current unitized package is commercially viable due to the construction and manufacturing method of the unitized package.
  • the fluid vessel is formed, filled, sealed and thereafter bonded to a flat carrier substrate.
  • the thickness, rigidity and physical nature of the carrier do not influence the sealing process.
  • the bonded process advantageously does not require the use of heat.
  • the bonding method allows for full, smooth and uniform contact between the flat surface of the printed carrier and the laminate barrier material. The strength, smoothness and continuity of this bond being significant to the ability of the dispensing tip to achieve a fluid tight seal on bending.
  • the present unitized packages may be manufactured using various methods.
  • the methods generally include the following manufacturing steps: providing a printed base card; forming a fluid vessel; and permanently bonding the fluid vessel to a portion of the printed base card.
  • the fluid vessel is fabricated by forming a portion of the first laminate barrier layer into a modified dome shape; depositing the material into the volume defined by the modified dome shape; disposing the second laminate barrier layer on the formed first laminate barrier layer; and sealing the first laminate barrier layer and the second laminate barrier layer together at their perimeters to form a fluid-tight enclosure for containing the product material.
  • the materials described above in Section I for the unitized package may also be used in the method.
  • the printed base card may be made before or after the fluid vessel is made. Preferably, the printed base card is made prior to the manufacture of the fluid vessel.
  • the base card may be fabricated from a variety of substrates, preferably from grades of solid bleached sulfite paperboard or cover stocks. Texts or graphics regarding product information may be printed or otherwise decorated on any surface of the base card using any suitable method. Preferred print methods include, but are not limited to, sheet fed offset web offset, flexographic and digital imaging.
  • the surface of the printed base card may further be coated with a UV cured polymerization coating, film lamination, or alternate coatings to impart water resistant and improved lay flat character to the base card material.
  • the base card is further precision die cut to form a line of perforation or other cut line defining an opening strip that facilitates clean opening of the fluid vessel.
  • any suitable method may be used for fabricating the fluid vessel of the present unitized package.
  • the various steps for making the fluid vessel may be performed continuously on different stations of a manufacturing sequence.
  • the fluid vessel may be fabricated individually or, more preferably, in multiple quantities. An example of a method for making multiple fluid vessels is described below.
  • the first laminate barrier layer 40 of the fluid vessel may be cold formed at the first station of the manufacturing sequence.
  • Any suitable stress force may be used in the cold forming process, e.g ., fluid pressure or vacuum.
  • the stress force is pressurized gas.
  • Figs. 3a to 4c show an example of an assembly at a first manufacturing station that may be used to form the modified dome shape in the first laminate barrier layer.
  • the first manufacturing station is comprised of a high pressure platen assembly with two opposing surfaces, i . e ., an upper platen 150 and a lower platen 160.
  • Preferably vertical motion of at least one of the upper or lower platens is provided.
  • the upper surface of the lower platen 160 comprises a plurality of facings 170 with a uniform profile.
  • Each of the facings contains a cavity 180.
  • Figs. 3a-4c show one such facing 170.
  • the facing may be fabricated with any suitable resilient material using any suitable method.
  • the facing is fabricated with silicone rubber with a durometer value in the range of about 40 to about 80 and with a thickness in the range of about 3.175 mm (0.1.25 inches) to about 6.350 mm (0.250 inches).
  • the silicone rubber facing may be used as the lower platen facing or further laminated or otherwise bonded to a pressure resistant and machinable material, e.g ., medium density fiberboard (MDF), to form the lower platen facing 170.
  • MDF medium density fiberboard
  • the thickness of the lower platen facing 170 may be adjusted in accordance with the specific design of the fluid vessel. For example, it is in the range of about 3.175 mm (0.125 inches) to about 25.4 mm (1.0 inches
  • the lower platen facing 170 may be cut or otherwise machined to form a plurality of cavities therein.
  • Figs. 3a-4c shows one such cavity 180.
  • the planar shape of the cavity 180 determines the shape of the base of the formed modified dome shape of the first laminate barrier layer, which includes, but is not limited to, circles, ovals, ellipses or squares or rectangles with soft radius corners.
  • the side wall 182 of the cavity 180 generally a simply cut perpendicular to the planar surface of the lower platen 160, does not contact the formed shape of the first laminate barrier layer and therefore need not be polished.
  • the cavity in the lower platen facing functions in lieu of a forming die otherwise utilized in conventional thermoforming processes.
  • each lower platen facing 170 is constructed to facilitate limited flow of air between the lower platen facing 170 and the lower surface of the lower platen 160. As shown in Figs. 3a and 3b , each lower platen facing 170 may comprise one or more vent holes 190.
  • the upper platen 150 is fitted with air supply channels 200 that correspond with each cavity 180 in the lower platen facings 170.
  • the preferred manufacturing process uses an intermittent web motion.
  • the first laminate barrier layer 40 is drawn forward into the first station as a planar web in a horizontal orientation.
  • the outer surface 44 of the first laminate barrier layer 40 faces downward and is engaged by the lower platen 160 and the inner surface 42 is engaged by the upper platen 150.
  • the upper platen 150 and lower platen 160 are then engaged by clamping force and the first laminate barrier layer 40 is secured at the perimeters of the cavity 180 of the lower platen facing 170.
  • Pressurized gas 210 is introduced into the upper platen 150 through the air supply channels 200.
  • the fluid gas pressure imposed on the inner surface 42 of the first laminate barrier layer 40 builds up (the presence of the vent holes 190 on the lower platen facing 170 relieves or reduces any opposing pressure)
  • the portion of the first laminate barrier layer 40 within the side wall 182 of the cavity 180 starts to deform under stress and bulges into the cavity 180 to form a modified dome shape.
  • the gas pressure is controlled such that the corresponding stress force does not exceed the ultimate tensile strength of the biaxially oriented thermoplastic polymer.
  • the deformation does not significantly alter the desirable physical properties of the original biaxially oriented thermoplastic polymer; instead, it increases the degree of polymer orientation.
  • a suitable gas pressure is in the range of about 0.69 bar (10 psi) to about 9.65 bar (140 psi), preferably in the range of about 2.76 bar (40 psi) to about 6.89 bar (100 psi). Under such pressure, the first laminate barrier layer comprising a biaxially oriented thermoplastic polymer layer can undergo further biaxial elongation typically in the range of about 10 to about 25% before reaching its breaking point.
  • Fig. 4c the gas pressure is fully applied. After the pressure reaches its desired level, the pressurized gas 210 is switched off and the pressure is removed. Minor shrinkage of the formed fluid vessel profile may subsequently occur due to partial elastic recovery of the biaxially oriented thermoplastic polymer. This partial recovery is not detrimental to the resulting profile.
  • the modified dome shape formed under the present process has a large radius curvature extending from the planar base where the first laminate barrier layer is located prior to the forming process.
  • the maximum depth of draw is highly influenced by the geometric shape of the original plane area subject to the forming process (i.e., the planar shape of the cavity 180). Therefore, the formed shape of the first laminate barrier layer is a result of the response of the planar laminate film to the internal pressure. Moreover, this formed shape is resiliently sustained until time of use by the internal gas or fluid inflation provided by the product materials and ambient air enclosed in the fluid vessel, without the need for any rigid vertical oriented sidewalls to impart structural strength. Other portions of the first laminate barrier layer that have not been subject to the forming process remain planar.
  • biaxially oriented thermoplastic polymer and pressurized gas allows for controlled redistribution of the stress force with progressive polymer chain slip and prohibits mechanical "hot spots" that would otherwise weaken the film or cause ultimate failure. Additionally, as the biaxially oriented thermoplastic polymer is elongated under tensile stress, resistance to further elongation is increased. The increased degree of orientation and resistance to further elongation is also biaxial in nature. As a result, the stressed polymer uniformly redistributes the tensile strain and prevents thinning of the polymer that would otherwise occur.
  • Biaxially oriented PET with its closely comparable mechanical values in the machine and cross machine directions, is a preferred biaxially oriented polymer.
  • the use of resilient rubber on the lower platen facing also prevents mechanical hot spots or stress points at the perimeter of the cavity 180 that may otherwise lead to stress failure.
  • the present process eliminates complications and quality issues such as buckling, wrinkling or tearing commonly associated with the stretch methods commonly used in forming processes.
  • a thin gage metal layer such as an aluminum layer
  • a thin gage metal layer may also be incorporated in the first laminated barrier layer.
  • the presence of a biaxially oriented thermoplastic polymer in the same laminate barrier layer as the aluminum layer also prevents cracking or tensile failure of the gage metal during the forming process as it distributes the stress force during the forming process and prevents localized metal elongation to the point of failure.
  • the upper platen 150 is lifted and the formed first laminate barrier layer 40 is advanced to the second station of the manufacturing sequence where the product material 70 is filled.
  • the product material 70 may be metered and discharged from fluid nozzles mounted directly over the volume defined by each of the modified dome shapes. Metering and pumping may take place while the intermittent web motion is stopped and may be accomplished through the use of a variety of suitable pumping and metering systems.
  • the product material dispensed preferably substantially fills the volume of the formed modified dome shape. Leveling of the product material is not required and higher viscosity product material may temporarily stand above the plane of the inner surface 42 of the first laminate barrier layer 40. Also, disposing the product material in the formed modified dome shape may prevent unwanted outward spread of the product material otherwise occurring due to momentum associated with the preferred intermittent web motion process.
  • a planar second laminate barrier layer 50 is then disposed on the inner surface 42 of the first laminate barrier layer 40.
  • the second laminate barrier layer 50 comprises a pressure sensitive adhesive on its inner surface 52, which is covered and protected by a silicone coated disposable release liner (not shown).
  • the first and second laminate barrier layers 40 and 50 are then indexed and moved forward to a heated platen where these two layers are sealed together at their perimeters to form a fluid-tight enclosure 60.
  • the product material 70 is automatically smoothed and redistributed in the enclosure 60 by the planar inner surface 52 of the second laminate barrier layer 50 just prior to or during the heat seal process.
  • a dispensing tip 100 is formed through the use of a simple machined relief in the lower surface of the heated upper platen. The remaining sealing takes place in such a manner that only the planar portion of the first laminate barrier layer is sealed and the modified dome shape is not disturbed.
  • the sealed first and second laminate barrier layers are then precision die cut to form individual fluid vessels.
  • the first and second laminate barrier layers are kiss cut together with a full bleed permanent pressure sensitive adhesive such as a permanent pressure sensitive acrylic adhesive against a release liner such as a disposable silicone coated release liner.
  • the individual fluid vessels are mounted in a predetermined pattern on the disposable silicone coated release liner.
  • the fluid vessels are generally not flexible when sealed.
  • the fluid vessel is then permanently bonded to the printed base card. This step may be accomplished by any suitable method.
  • the disposable silicone coated release liner is removed and the second laminate barrier layer is bonded to the base card by the full bleed permanent pressure sensitive acrylic adhesive.
  • the present unitized package may be used as a product for single use or multiple uses. It may also be used as a sampling package.
  • a consumer may open the fluid vessel, for example, by tearing off the opening strip along the line of perforation on the base card.
  • the product material may then be dispensed by gently applying pressure on the outer surface of the first laminate barrier layer. Because the line of perforation provides a clean opening point of the fluid vessel, the product material may be dispensed in a controlled manner.
  • Alternate methods of opening the fluid vessel include, but are not limited to; tear strings, peel off tabs, scoring of one or both of the laminate barrier layers such as with lasers, peel off header strips or frangible or peelable perimeter seals. Additionally, since the fluide vessel is permanently bonded to the printed base card, any marketing or product information printed on the base card is readily available at the time of use.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
EP13707518.0A 2012-02-24 2013-02-22 Unitized package Active EP2817239B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/404,421 US9272830B2 (en) 2009-08-24 2012-02-24 Unitized package of card and fluid vessel
PCT/US2013/027210 WO2013126621A1 (en) 2012-02-24 2013-02-22 Unitized package and method of making same

Publications (2)

Publication Number Publication Date
EP2817239A1 EP2817239A1 (en) 2014-12-31
EP2817239B1 true EP2817239B1 (en) 2016-02-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13707518.0A Active EP2817239B1 (en) 2012-02-24 2013-02-22 Unitized package

Country Status (16)

Country Link
EP (1) EP2817239B1 (es)
JP (1) JP2015508048A (es)
KR (1) KR20140129255A (es)
CN (1) CN104220344A (es)
AR (1) AR090134A1 (es)
AU (1) AU2013205473B2 (es)
CA (1) CA2865059C (es)
CL (1) CL2014002229A1 (es)
CO (1) CO7141454A2 (es)
HK (1) HK1205495A1 (es)
MX (1) MX2014010197A (es)
PE (1) PE20142418A1 (es)
PH (1) PH12014501869A1 (es)
SG (1) SG11201405094VA (es)
UY (1) UY34638A (es)
WO (1) WO2013126621A1 (es)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017144084A (ja) * 2016-02-18 2017-08-24 シグマ紙業株式会社 台紙
TWI672764B (zh) * 2018-11-07 2019-09-21 國立成功大學 晶片封裝裝置及其對位壓合方法
CN109573324A (zh) * 2019-01-16 2019-04-05 叶卫东 一次性补充液包装瓶

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234521A3 (en) * 2001-02-23 2003-07-02 Arcade Marketing, Inc. Liquid product sampler with sample deposit area
US8544687B2 (en) * 2007-08-31 2013-10-01 Momentive Performance Materials, Inc. Display card with viscous material dispenser
AR078237A1 (es) * 2009-08-24 2011-10-26 Aki Inc Envase unitario y metodo para fabricarlo

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SG11201405094VA (en) 2014-09-26
HK1205495A1 (en) 2015-12-18
CL2014002229A1 (es) 2015-04-24
CN104220344A (zh) 2014-12-17
AR090134A1 (es) 2014-10-22
AU2013205473B2 (en) 2015-09-24
EP2817239A1 (en) 2014-12-31
PH12014501869A1 (en) 2014-11-17
UY34638A (es) 2013-09-30
CA2865059C (en) 2017-11-28
MX2014010197A (es) 2014-11-21
CA2865059A1 (en) 2013-08-29
JP2015508048A (ja) 2015-03-16
WO2013126621A1 (en) 2013-08-29
CO7141454A2 (es) 2014-12-12
PE20142418A1 (es) 2015-01-22
AU2013205473A1 (en) 2013-09-12
KR20140129255A (ko) 2014-11-06

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