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WO2010068475A1 - Procédé d'emballage par l'activation d'un matériau expansible - Google Patents

Procédé d'emballage par l'activation d'un matériau expansible Download PDF

Info

Publication number
WO2010068475A1
WO2010068475A1 PCT/US2009/065838 US2009065838W WO2010068475A1 WO 2010068475 A1 WO2010068475 A1 WO 2010068475A1 US 2009065838 W US2009065838 W US 2009065838W WO 2010068475 A1 WO2010068475 A1 WO 2010068475A1
Authority
WO
WIPO (PCT)
Prior art keywords
expandable material
flexible container
activating
particles
expandable
Prior art date
Application number
PCT/US2009/065838
Other languages
English (en)
Inventor
David C. Ours
Original Assignee
Kellogg Company
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 Kellogg Company filed Critical Kellogg Company
Publication of WO2010068475A1 publication Critical patent/WO2010068475A1/fr

Links

Classifications

    • 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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1271—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed parts being partially covered
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • 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

Definitions

  • the present invention relates to a method of packaging a plurality of items in a flexible container, and more specifically to a flexible container having an expandable material disposed thereon and being activated to increase the rigidity of the expandable material to stabilize the flexible container.
  • Flexible containers are used to hold several items together, such as particulate or cartons.
  • An example of a flexible container includes a bag having a top opening for receiving the particulate.
  • the bag further includes a storage compartment for holding the particulate therein.
  • methods of packaging a particulate in a flexible container include moving the particulate through the opening of the flexible container and into a storage compartment.
  • the flexible container may stretch to accommodate the increased volume into the storage compartment.
  • a flexible container can also be comprised of plastic wrap that extends around a plurality of cartons.
  • the subject invention provides a method for packaging a plurality of particles in a flexible container.
  • the method includes the step of moving the particles through an opening of the flexible container to at least partially fill the flexible container.
  • An expandable material is then disposed, in an unexpanded state, to at least a portion of the flexible container.
  • at least a portion of the expandable material is activated after the moving step has begun to expand the expandable material and increase the rigidity of the expandable material to stabilize the flexible container.
  • the subject invention further provides a method for packaging a plurality of items in a flexible container and begins by stacking a plurality of cartons together. The cartons are then wrapped with a flexible film.
  • an expandable material is disposed, in an unexpanded state, to at least a portion of the flexible film. At least a portion of the expandable material is then activated after the wrapping step has begun to expand the expandable material and to increase the rigidity of the expandable material to stabilize the stack of cartons.
  • FIG. 1 of the application is a simplified flow diagram illustrating the steps of a first exemplary embodiment of the invention.
  • FIG. 2 of the application is a simplified flow diagram illustrating the steps of a second exemplary embodiment of the invention.
  • Flexible containers are used to receive and hold a particulate, such as cereal.
  • An example of a flexible container is a bag that includes an opening near the top for receiving the particulate.
  • the bag further includes front, rear and side panels extending vertically along an axis or, for a circular bag, a cylindrical wall extending vertically along the axis.
  • the walls extend from the opening to a closed bottom.
  • the walls and bottom define a storage compartment for holding the particulate therein.
  • the bag can be hung or suspended with the opening facing upward to receive particles.
  • the suspended bag can be described with respect to a vertical axis that extends between the bottom and the opening.
  • a method for packaging a plurality of particles in a flexible container starts at step 20.
  • a plurality of particles are moved through an opening of the flexible container to at least partially fill the flexible container.
  • the moving step may be accomplished by moving a particulate along a conveyor having the downstream end positioned over the opening of the bag.
  • the moving step may be accomplished by moving the particulate through a hopper, vertical bagging machine, or any other method known in the art of bagging or packaging.
  • an expandable material in an unexpanded state, is disposed to at least a portion of the flexible container.
  • the expandable material can be disposed on the bag prior to the bag being suspended.
  • the expandable material can be relatively thin, allowing a plurality of bags at least partially coated with the expandable material rolled on a single roll.
  • the expandable material can be applied by spraying, brushing, screen printing, ink jet, or any other method.
  • the expandable material can be applied to the bag in a pattern, such as a plurality of ribs. Alternatively, the expandable material may be applied in a lattice pattern or in strips that extend parallel to the longitudinal axis of the bag.
  • a non-exclusive list of expandable materials that can be practiced with the invention include the materials disclosed in U.S. Pat. Nos. 7,077,460 and 7,169,344, which are hereby incorporated by reference.
  • the expandable material is activated after the moving step has begun for expanding the expandable material and increasing the rigidity of the expandable material.
  • the activating step may be accomplished by exposing the expandable material to heat, radio frequency radiation, ultraviolet radiation, ultrasonic radiation, electromagnetic fields, or another source that expands the particular expandable material applied to the bag.
  • the activating source expands the polymeric material of the ribs and increases the rigidity of the ribs for stabilizing the bag containing the plurality of particulates.
  • the expandable material in that direction can be expanded to counter-act the leaning of the bag.
  • the expansion may be initiated along the entire vertical length of the bag in the direction of leaning if necessary. The method ends at step 28.
  • a plurality of items are packaged in a flexible container in the form of a flexible film as shown in Fig. 2, which begins at step 40.
  • the flexible film may be a stretch wrap roll, a stretch bag, or any other flexible film known in the art.
  • the second embodiment of the broader invention includes the step 42 of stacking a plurality of cartons together.
  • the individual cartons can be any size, can be formed from any material, and can contain any kind of product.
  • the stack formed with the cartons can have a foot print that is square or rectangular or any other desired shape.
  • the second embodiment of the broader invention also includes the step 44 of wrapping the cartons with a flexible film.
  • the second embodiment of the broader invention also includes the step 46 of disposing an expandable material in an unexpanded state to at least a portion of the flexible film.
  • the expandable material can be disposed in parallel lines on the film, or can be disposed in a grid pattern, or can be disposed in an irregular pattern.
  • the second embodiment of the broader invention also includes the step 48 of activating at least a portion of the expandable material after the wrapping step has begun to expand the expandable material and to increase the rigidity of the expandable material for stabilizing the stack of cartons.
  • the material can be expanded when wrapping is complete or can be started before wrapping complete.
  • the material can be selectively expanded to address locations of the stack that appear vulnerable to collapse or bulging or leaning.
  • the flexible container having the expandable material can be disposed in a mold prior to expansion of the material.
  • the mold can cause the material to conform to a desired shaped during expansion. It may be desirable to dispose the flexible container in the mold prior to filling. However, in other embodiments of the invention, it may be desirable to place the filled container in the mold and then expand the material.
  • the material can be any material that can be dispensed as a liquid, solid, or semi-solid material and later reacted or cured to create a substantially fused member.
  • the material can be processed and dispensed as a liquid prepolymer or a thermoplastic material before curing, and in one embodiment, after curing the material can become thermoset.
  • the preferred material is a polymeric material, with the most preferred material being a polymeric material that becomes thermoset after curing.
  • Materials that can be used to form the material include, but are not limited to, epoxy, polyurethane, polyester, and acrylic based materials, which when compounded with appropriate ingredients may expand and cure in a reliable and predictable manner upon application of a curing stimulus.
  • epoxy polyurethane
  • polyester polyester
  • acrylic based materials which when compounded with appropriate ingredients may expand and cure in a reliable and predictable manner upon application of a curing stimulus.
  • olfenic materials, elastomers, fluropolymers or other materials that may be used to formulate the material.
  • a number of epoxy-based structural reinforcing foams are known in the art and may also be used to produce the material of the present invention.
  • a typical structural foam includes a polymeric base material, such as an epoxy resin or ethylene- based polymer which, when compounded with appropriate ingredients (typically a blowing agent, a curing agent, and perhaps a filler), typically expands and cures in a reliable and predictable manner upon the application of heat or another activation stimulus.
  • the resulting material has a low density and sufficient stiffness to impart desired rigidity to a supported article.
  • the structural foam is usually initially processed as a thermoplastic material before curing. After curing, the structural foam typically becomes a thermoset material that is fixed and incapable of flowing.
  • the material is generally and preferably a heat-activated epoxy-based resin having foamable characteristics upon activation through the use of heat typically encountered in an e-coat or other automotive paint oven operation. As the material is exposed to heat, it generally expands, cross-links, and structurally bonds to adjacent surfaces.
  • An example of a preferred formulation is an epoxy-based material that may include polymer modificis such as an ethylene copolymer or terpolymer that is commercially available from L&L Products, hie. of Romeo, Michigan, under the designations L-5204, L-5206, L-5207, L-5209, L-5214, and L-5222.
  • polymer modificis such as an ethylene copolymer or terpolymer that is commercially available from L&L Products, hie. of Romeo, Michigan, under the designations L-5204, L-5206, L-5207, L-5209, L-5214, and L-5222.
  • Possible processing techniques for the preferred materials include injection molding, blow molding, thermo forming, direct deposition of palletized materials, extrusion or extrusion with a mini-applicator extruder. This enables the creation of part designs that exceed the design flexibility capability of most prior art materials. hi essence, any foamable material imparts structural reinforcement characteristics may be used in conjunction with the present invention. The choice of the material used will be dictated by performance requirements and economics of the specific application and requirements and may not necessarily include a heat-activated expandable material.
  • Additional foamable or expandable materials that could be utilized in the present invention include other materials which are suitable as bonding, energy absorbing, or acoustic media and which may be heat activated foams which generally activate and expand to fill a desired cavity or occupy a desired space or function when exposed to temperatures typically encountered in automotive e-coat curing ovens and other paint operation ovens.
  • a preferred heat activated material is an expandable or flowable polymeric formulation, and preferably one that can activate to foam, flow, adhere, or otherwise change states when exposed to the heating operation of a typical automotive assembly painting operation.
  • the polymeric foamable material may comprise an ethylene copolymer or terpolymer that may possess an alpha- olefin.
  • the polymer is composed of two or three different monomers, i.e., small molecules with high chemical reactivity that are capable of linking up with similar molecules.
  • particularly preferred polymers include ethylene vinyl acetate, EPDM, or a mixture thereof.
  • other examples of preferred foamable formulations commercially available include polymer-based materials available from L&L Products, Inc. of Romeo, Michigan under the designations as L-2018, L-2105, L-2100, L-7005, L-7101, L-7102, L-2411, L-2420, L-4141, etc. and may comprise either open or closed cell polymeric base material.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Packages (AREA)

Abstract

La présente invention concerne un procédé d'emballage d'une pluralité de particules dans un récipient flexible qui consiste à déplacer les particules par une ouverture du récipient flexible pour remplir au moins partiellement le récipient, disposer un matériau expansible dans un état non expansé dans au moins une partie du récipient flexible, et activer au moins une partie du matériau expansible après le début de l'étape de déplacement pour dilater le matériau expansible et augmenter sa rigidité afin de stabiliser le récipient flexible. L'invention concerne également un procédé permettant de disposer le matériau expansible dans au moins une partie d'un film flexible enroulé autour d'une pile de cartons.
PCT/US2009/065838 2008-11-25 2009-11-25 Procédé d'emballage par l'activation d'un matériau expansible WO2010068475A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11777508P 2008-11-25 2008-11-25
US61/117,775 2008-11-25

Publications (1)

Publication Number Publication Date
WO2010068475A1 true WO2010068475A1 (fr) 2010-06-17

Family

ID=41692350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/065838 WO2010068475A1 (fr) 2008-11-25 2009-11-25 Procédé d'emballage par l'activation d'un matériau expansible

Country Status (2)

Country Link
US (1) US20100126119A1 (fr)
WO (1) WO2010068475A1 (fr)

Families Citing this family (7)

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CA3007829C (fr) 2013-02-13 2020-06-02 Lantech.Com, Llc Profilage de materiau d'emballage pour emballage de confinement base sur la force
CA3202951A1 (fr) 2014-01-14 2015-07-23 Lantech.Com, Llc Reglage dynamique du parametre de force d'enveloppement en reponse a la force d'enveloppement controlee et/ou pour la reduction des ruptures de film
CA2982343C (fr) 2015-04-10 2019-08-20 Lantech.Com, Llc Machine d'emballage sous film etirable permettant des operations de confinement de couche superieure
CA2999860C (fr) 2015-09-25 2020-10-20 Lantech.Com, Llc Machine d'emballage sous film etirable a etablissement de profil de charge automatique
AU2018338049B2 (en) 2017-09-22 2021-12-23 Lantech.Com, Llc Load wrapping apparatus wrap profiles with controlled wrap cycle interruptions
US11479378B2 (en) 2019-09-09 2022-10-25 Lantech.Com, Llc Stretch wrapping machine with dispense rate control based on sensed rate of dispensed packaging material and predicted load geometry
AU2020350496B2 (en) 2019-09-19 2024-01-25 Lantech.Com, Llc Packaging material grading and/or factory profiles

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US4375851A (en) * 1979-02-26 1983-03-08 Bemis Company, Inc. Skin packaging
WO2000069747A1 (fr) * 1999-05-18 2000-11-23 Giorgio Trani Materiau d'enveloppage flexible, particulierement pour l'emballage, et procede d'elaboration
US20020174626A1 (en) * 2001-05-23 2002-11-28 Lancaster Patrick R. Heat sealer for stretch wrapping apparatus
US20040005100A1 (en) * 2002-07-03 2004-01-08 Versluys Robert Thor Flexible pouch with expandable polymer skeleton
US20060037285A1 (en) * 2004-08-19 2006-02-23 Cary Randall L Bulk transportable container

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Publication number Priority date Publication date Assignee Title
US4375851A (en) * 1979-02-26 1983-03-08 Bemis Company, Inc. Skin packaging
WO2000069747A1 (fr) * 1999-05-18 2000-11-23 Giorgio Trani Materiau d'enveloppage flexible, particulierement pour l'emballage, et procede d'elaboration
US20020174626A1 (en) * 2001-05-23 2002-11-28 Lancaster Patrick R. Heat sealer for stretch wrapping apparatus
US20040005100A1 (en) * 2002-07-03 2004-01-08 Versluys Robert Thor Flexible pouch with expandable polymer skeleton
US20060037285A1 (en) * 2004-08-19 2006-02-23 Cary Randall L Bulk transportable container

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