EP1343700B1 - A packaging unit - Google Patents

A packaging unit Download PDF

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Publication number
EP1343700B1
EP1343700B1 EP01994792A EP01994792A EP1343700B1 EP 1343700 B1 EP1343700 B1 EP 1343700B1 EP 01994792 A EP01994792 A EP 01994792A EP 01994792 A EP01994792 A EP 01994792A EP 1343700 B1 EP1343700 B1 EP 1343700B1
Authority
EP
European Patent Office
Prior art keywords
film
unit
combination
films
perforations
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.)
Revoked
Application number
EP01994792A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1343700A2 (en
Inventor
Corinne Unilever Research U.S. Inc. SASO
Richard Unilever Research U.S. Inc. CHALMERS
Edward John Unilever Research U.S. Inc. Giblin
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.)
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24953088&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1343700(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP1343700A2 publication Critical patent/EP1343700A2/en
Application granted granted Critical
Publication of EP1343700B1 publication Critical patent/EP1343700B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • 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
    • B65D71/06—Packaging elements holding or encircling completely or almost completely the bundle of articles, e.g. wrappers
    • B65D71/08—Wrappers shrunk by heat or under tension, e.g. stretch films or films tensioned by compressed articles
    • 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
    • B65D2203/00—Decoration means, markings, information elements, contents indicators
    • B65D2203/06—Arrangements on packages concerning bar-codes
    • 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
    • B65D2203/00—Decoration means, markings, information elements, contents indicators
    • B65D2203/06—Arrangements on packages concerning bar-codes
    • B65D2203/08—Wrapped groups of articles, the wrapping presenting openings to facilitate the marking or the reading of each article, e.g. individually priced
    • 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
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • 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
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding

Definitions

  • Brown et al. U.S. Patent No. 5,992,630 discloses a packaged product which includes a plurality of cartons, a corrugated board of paperboard carrier wall disposed along a portion of the periphery, and shrink wrapping.
  • the shrink wrap film has vent holes that are specifically sized and spaced apart as needed to provide adequate venting of one or more of the volatiles from the shrink wrapped multipack. While the Brown et al. invention does not require a full transportation case, it still utilizes corrugated board or paperboard as the carrier wall for the multipack.
  • U.S. Patent No. 5,002,782 discloses perforated heat shrinkable thermoplastic bags wherein slits cut by a knife blade reduce the splitting when a product such as a meat product is cooked within the bag.
  • the perforations permit escape of moisture and prevent ballooning and collection of moisture which could leave to uneven cooking.
  • the slitting is preferably done by a v-shaped knife blade.
  • the bag is preferably formed from a seamless tube of thermoplastic material.
  • U.S. Patent No. 4,586,312 discloses a heat shrinkable package with a frangible access panel defined by perforations.
  • a perforation cylinder may be used.
  • Truchiya et al. U.S. Patent No. 5,067,612 discloses a shrink film package having a perforated folded strip. A perforation wheel may be used. A notch for tearing off may be provided.
  • Harris, U.S. Patent No. 4,815,603 is directed to a shrink wrap package having vent openings to permit free air flow through the package and allow the escape of gas.
  • the shrink wrap plastic cover is shrink wrapped to a container by means of a heat gun.
  • Doyle, U.S. Patent No. 5,171,593 discloses a method of wrapping a tray of produce or other articles requiring ventilation.
  • the method involves use of a sheet of flexible plastic film having a perforated portion. Micro perforations are arranged in rows and columns.
  • the prior approach of randomly placing perforating needles around a cylinder press and applying the cylinder to the film is said to have resulted in generally ragged perforations which will cause the film to tear as it is stretched over the tray.
  • U.S. Patent No. 4,333,570 discloses an opaque shrink wrapped packaging having finger slits terminating in semicircular cuts.
  • U.S. Patent No. 3,442,436 discloses an easy opening means for a package which comprises a pair of seams curved in a film like member wherein free ends of the tab means are pulled relative to the package, the tab means cause the film like member to tear along the paths.
  • Cutrara U.S. Patent No. 4,289,237 discloses a firewood package having a film of plastic material secured around a generally curved surface of a bundle wherein the plastic material is perforated to permit air to circulate into and through the bundle.
  • the portions of the perforations illustrated in the figure are shown as being in two parallel arcs.
  • Becker, U.S. Patent No. 3,403,779 discloses an opening device for a package wherein the device is used to sever an elongated strip from the material.
  • U.S. Patent No. 4,306,653 discloses a packaging container for protection of fragile articles during transportation and storage which includes an outer carton and plurality of inner packing support panels attached to the contained article by a heat shrinkable film. The illustrated film appears to have perforations.
  • Harris, U.S. Patent No. 4,941,572 discloses a package for transportation and storing articles, such as cut flower arrangements.
  • a plastic film vented shell is disposed about the flowers and connected to a container in shrink wrap relation.
  • the package includes a U-shaped insert.
  • a plurality of openings 60 are present of a size and a number to permit air flow through the shell in a shrunk condition.
  • Anderson, U.S. Patent No. 3,804,235 discloses a package comprising an article having heat shrinkable material wrapped therearound.
  • the sheet of heat shrinkable material has at least one opening.
  • a thickening ridge defines a reinforcement which prevents tearing.
  • a plurality of articles may be disposed in juxtaposed position within the package.
  • the openings may be, e.g., for placement of a tax stamp on cigarettes or for carrying the package as in Fig. 10.
  • U.S. Patent No. 3,756,397 discloses use a single wrap of a single sheet of continuous shrinkable and bondable plastic material to constitute virtually the entire package for a cluster of plural like containers such as beverage containers. Finger access openings such as 25-26 are provided in the plastic sheet in the upper side of the container.
  • US-A-4 586 312 discloses a combination as specified in the preamble of claim 1.
  • EDL can pack brochure received by one of the applicants herein on November 27, 2000, discloses an "easy open perforated tear strip option.” Film perforations for easy-open packs are mentioned as an option. Packs can be trayless and can be "bullseye".
  • the invention is directed to the discovery of a new way of transportation cartons and other packages so as to minimize the cost and the resource used.
  • the invention comprises the use of two or more films shrink wrapped about the packages which are juxtaposed to form a unit.
  • at least one of the films is opaque and at least one of the films is clear.
  • the opaque film is sufficiently resistant to the transmission of light such that UPC bar codes present on the individual packages cannot be read through the film by bar code reading machines.
  • the unit which comprises the combined packages will typically have its own bar code, (eg., a separate, outer label), use of the opaque film prevents the bar code reading machine from inadvertently reading one of the bar codes for the individual packages and thereby falsely crediting the manufacturer with shipment only of an individual package rather than the multi-package unit.
  • the two or more films will be heat sealed to each other.
  • the shrink wrap in place about the unit can include one or more gripping openings. These openings may be naturally formed during the shrinking of the films or they may be formed by cutting openings in the film.
  • the gripping openings are formed on opposite ends of the unit, and the unit is transported with the opaque film on top (eg., cartons inverted). Because the opaque film is likely to be the unperforated of the two films, this will minimize damage to the integrity of the film when the unit is lifted during transportation.
  • At least one of the films can include a single line of zipper perforations extending along one of the film sides and gripping apertures in at least one film side on opposite sides of the perforations.
  • film side is meant one of the sides of the unit from which a shrink wrap film is imposed and which unit side is completely covered by said one film, except for any perforations or other openings in that film.
  • This arrangement permits the shrink wrap unit to be readily grasped and readily opened along the zipping perforations.
  • zipper perforations it is meant that the perforations are arranged in sufficient proximity to one another linearly and spaced sufficiently from each other laterally to permit the shrink wrap film to open along the perforations by creating tears between the perforations upon application of reasonable manual force.
  • the pattern of perforations is such that the perforations are opened like a zipper along the intended line of perforations.
  • At least one of the films can include zipper perforations in the film in a side intermediate the film sides and parallel to a longitudinal axis of the unit.
  • the single line of zipper perforations on each side of the unit extend from a gripping opening on one end of the unit perpendicularly to the plane of one of the film sides, across each heat seal side parallel to the longitudinal axis of the unit and then perpendicularly again to the plane of the film side until it reaches a second opening on the other end of the unit.
  • At least one of the films can include a tear strip defined by spaced zipper perforations in the film along two parallel lines in at least one of the film sides parallel to a longitudinal axis of the unit.
  • the tear strip extends from a gripper opening on one end of the unit perpendicularly to the plane of one of the film sides, across the film side parallel to the longitudinal axis of the unit and then perpendicularly again in the plane of the film side until it reaches a second opening on the other end of the unit.
  • unit 10 wherein cartons 12 and 14 are juxtaposed side by side has positioned above it clear shrink wrap film 16 and positioned below it opaque shrink wrap film 18.
  • Films 16 and 18 are made of a low density polyethylene or LDPE/HDPE blend and are heat shrinkable.
  • the thickness of sheet 16 is preferably from 0.0025 cm (0.001") to 0.0127cm (0.005"), especially from 0.00508 cm (0.002") to 0.01016 cm (0.004").
  • the thickness of sheet 18 is preferably from 0.0025 cm (0.001") to 0.0127cm (0.005"), especially from 0.00508 cm (0.002") to 0.00762 (0.003"), most preferably 0.00762 cm (0.003") for each.
  • Preferably film 18 is made opaque by adding (Ti O 2 ) titanium dioxide colorant to the resin.
  • Film 16 is shrink wrapped from one side of unit 10, the top side in Fig. 1.
  • Unit 18 is shrink wrapped from an opposing side, from the bottom in Fig. 1.
  • shrink wrapping of the films results in a film side for the unit on each side on which the film fully covers the side of the unit.
  • film side 30 is created, as seen in Fig. 2.
  • film side 32 is created on the bottom of the unit, as also indicated in Fig. 2.
  • Heat sealing of the two films from opposite directions results in creation on each of the opposite ends of the unit of a "bullseye" which may be used as a gripping openings 34 and 36.
  • Films 16 and 18 are heat sealed along a periphery of unit 10, excluding the bullseye, along perimeter heat seal 40.
  • Extending from gripping opening 34 to gripping opening 36 first perpendicular to film 30 then parallel to a longitudinal axis of unit 10 and then again perpendicular to film side 30 to bullseye 36 are zipper perforations 44 (Fig. 2). Zipper perforations are designed such that reasonable manual force applied to the shrink wrap will split open the shrink wrap along the perforations as a result of tears extending from one perforation to the next and so on.
  • gripping openings 50, 52 On either side of zipper perforations 44 are gripping openings 50, 52.
  • bottom film 18 will not be provided with perforations.
  • unit 10 is transported with opaque film 18 (opaque film side 32) as the upper end.
  • opaque film 18 opaque film side 32
  • the unit is transported with opaque film side 32 as the upper end, which has no perforations, and the package is inverted when it is time to open the shrink wrap.
  • the shrink wrap is then readily opened by applying manual force upwardly at the bullseye 34, 36 and/or at gripping apertures 50, 52.
  • zipper perforations 60, 62 extend on each side of the unit between bullseyes 34, 36.
  • the zipper perforations preferably extend on the first bullseye end to and along each heat seal side and then to the second bullseye end.
  • Fig. 4 The embodiment of Fig. 4 is similar to the previous embodiments except that the perforations are present in the form of tear strip 70 defined by two parallel lines of perforations extending from gripping opening 34 across the clear heat seal side 30 to gripping opening 36.
  • the unit 10 is preferably transported with opaque film 18, opaque heat seal side 32 as the top of the unit to minimize the chances that when the unit is lifted during transportation the perforations will prematurely tear open.
  • the unit is inverted and reasonable manual force is applied at the gripping openings 34, 36 to tear open package at the tear strip.
  • a particular advantage of one aspect of the present invention results from the use of the opaque film as the bottom half of the shrink wrap.
  • the opaque film obscures to a bar code reader the bar codes which may well be present on the bottoms or bottom sides of the packages. It is desirable that the bar code readers read the bar codes for the whole unit e.g., on the outside of the shrink wrap rather than the individual packages. If a bar code reader picks up a bar code inadvertently for an individual package the manufacturer may not receive credit for having supplied the full multipack unit.
  • Use of the opaque bottom film serves to minimize the possibility of an errant reading from the bar code readers.
  • the opaque side includes no perforations since it preferably serves as the top side of the unit. If perforations were present in the opaque side, then upward force experienced by the opaque side during transportation when the bullseye gripping openings are grasped could result in premature opening of the shrink wrap.
  • the packages of the unit are cartons and more preferably, the cartons are corrugated as at 82 of carton 80 of Fig. 2. This enhances the shrink wrap unit compressive strength, notwithstanding the absence of a transportation case or a sleeve of paperboard or corrugated material within the shrink wrap.
  • a second line of perforations may be applied, for example at the facilities of the end product manufacturer, with a star wheel or the like.
  • gripping openings are present in the clear heat seal side, on opposite sides of the perforations, it may be desirable to include J-shaped cuts to ensure that in the event that a small tear occurs it does not spread to other parts of the shrink wrap.
  • cartons are used as a package, they may be made from paperboard or, more preferably as indicated above, corrugated fiberboard.
  • the shrink wrapping films may be applied by conventional means such as heat sealing the leading edge (in the cross direction), pushing the cartons against the sealed edge with the films top and bottom, then sealing the trailing edge (CD), and then finally passing the bundle through heat tunnel equipment to form a tight heat-sealed bundle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Wrappers (AREA)
EP01994792A 2000-12-12 2001-12-10 A packaging unit Revoked EP1343700B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US734792 2000-12-12
US09/734,792 US20020162766A1 (en) 2000-12-12 2000-12-12 Shipping case alternative
PCT/EP2001/014777 WO2002047999A2 (en) 2000-12-12 2001-12-10 A packaging unit

Publications (2)

Publication Number Publication Date
EP1343700A2 EP1343700A2 (en) 2003-09-17
EP1343700B1 true EP1343700B1 (en) 2005-05-11

Family

ID=24953088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01994792A Revoked EP1343700B1 (en) 2000-12-12 2001-12-10 A packaging unit

Country Status (11)

Country Link
US (1) US20020162766A1 (es)
EP (1) EP1343700B1 (es)
AR (1) AR038544A1 (es)
AT (1) ATE295313T1 (es)
AU (1) AU2002224937A1 (es)
BR (1) BR0116094A (es)
CA (1) CA2430870A1 (es)
DE (1) DE60110828T2 (es)
ES (1) ES2241900T3 (es)
MX (1) MXPA03005238A (es)
WO (1) WO2002047999A2 (es)

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Also Published As

Publication number Publication date
EP1343700A2 (en) 2003-09-17
WO2002047999A3 (en) 2003-02-13
DE60110828T2 (de) 2005-11-17
AU2002224937A1 (en) 2002-06-24
ES2241900T3 (es) 2005-11-01
ATE295313T1 (de) 2005-05-15
MXPA03005238A (es) 2003-09-25
US20020162766A1 (en) 2002-11-07
WO2002047999A2 (en) 2002-06-20
AR038544A1 (es) 2005-01-19
CA2430870A1 (en) 2002-06-20
DE60110828D1 (de) 2005-06-16
BR0116094A (pt) 2003-10-14

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