US20090238501A1 - Pallet Hood Tear Tape - Google Patents
Pallet Hood Tear Tape Download PDFInfo
- Publication number
- US20090238501A1 US20090238501A1 US12/053,919 US5391908A US2009238501A1 US 20090238501 A1 US20090238501 A1 US 20090238501A1 US 5391908 A US5391908 A US 5391908A US 2009238501 A1 US2009238501 A1 US 2009238501A1
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- US
- United States
- Prior art keywords
- hood
- tear tape
- tear
- products
- tape
- 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.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- 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
- B65D71/0088—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
- B65D71/0092—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids
- B65D71/0096—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids the dimensions of the supports corresponding to the periphery of the load, e.g. pallets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D19/38—Details or accessories
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00263—Overall construction of the pallet
- B65D2519/00273—Overall construction of the pallet made of more than one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00293—Overall construction of the load supporting surface made of more than one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00298—Overall construction of the load supporting surface skeleton type
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00323—Overall construction of the base surface made of more than one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
- B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-like shape
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00368—Overall construction of the non-integral separating spacer
- B65D2519/00373—Overall construction of the non-integral separating spacer whereby at least one spacer is made of one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00736—Details
- B65D2519/0081—Elements or devices for locating articles
- B65D2519/00815—Elements or devices for locating articles on the pallet
Definitions
- the present invention relates to tear tapes on shrink hoods and stretch hoods for products on a pallet.
- Tear strips comprising a thin thread or string of fiber placed within the container at its top are shown in U.S. Pat. No. 3,543,343 to Staller, as a means to open sealed containers along a single tear line.
- the drawback of such tear strips is that the tear line may deviate from the top of the bag and propagate into other container elements and compromise its strength, shape and operation.
- U.S. Pat. No. 3,827,427 to Uramoto defines two tear lines, one on each lip of a bag mouth, between pairs of ribs to contain the propagating tear.
- a tear strip comprised of a bead of thermoplastic material is provided to define a tear line generally along the top edge of the flexible container.
- Tear strips are typically comprise weakened lines for tearing across sealed webs, for example to gain access to the mouth of a bag.
- U.S. Pat. No. 3,198,228 to Naito and U.S. Pat. No. 3,780,781 to Uramoto both describe tear strips having such weakened regions.
- U.S. Pat. 2002/0162766 to Saso et al. describes a shipping case alternative having an opaque film and a clear film shrink wrapped around packages and the clear film having a tear strip comprising parallel lines of zipper perforations extending along one of the shrink films. The 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.
- U.S. Pat. 2001/0025800 to Marco describes a single piece carrier for a six pack of cans having a tear or removal strip that separates the ring carrier from the film sleeve.
- Various processes have been developed for securing product packages on a pallet.
- One such process is the so-called spiral wrapping process where a packaging material dispenser is kept in a fixed position while the load and the pallet rotates around a central vertical axis or oppositely: the load is fixed and the dispenser is circulated around the load while dispensing packaging material.
- the packaging material is dispensed onto the load by the rotation of the load that pulls the packaging material from the dispenser, as described in U.S. Pat. No. 5,005,335 to Yourgalite et al.
- An alternative process is the shrink process.
- the load is confined in a plastic hood, usually pulled down on the load by an appropriate frame surrounding the load in a horizontal plane, and subsequently the plastic hood is made to shrink by applying a fast heating process.
- the shrunk plastic hood serves the dual purpose of resiliently confining and holding the load units together and protecting the load units against the environment during transport, e.g. water and dust.
- another process is the stretch hood wrapping.
- the method preferably comprises a further packaging step, wherein perforating means, e.g. a knife or a punching machine, is applied to perforate the packaging material in selected points or areas.
- perforating means e.g. a knife or a punching machine
- a tear tape can be attached to interior or exterior of the shrink hood or stretch hood to facilitate removal of the shrink hood without product damage.
- FIG. 1 is a perspective view of a one embodiment of the invention
- FIG. 2 is a perspective view of a one embodiment of the invention
- FIG. 3 is a perspective view of a one embodiment of the invention.
- FIG. 4 is a front view a portion of one embodiment of the invention.
- FIG. 5 is a front view a portion of one embodiment of the invention.
- FIG. 6 is a perspective view of a portion of one embodiment of the invention.
- FIG. 7 is a top view of a portion of one embodiment of the invention.
- FIG. 8 is a front view of a portion of one embodiment of the invention.
- FIG. 9 is a front view of a portion of one embodiment of the invention.
- FIGS. 10 a - d are perspective views of embodiments of the invention.
- one aspect of the present invention comprises a package shipment system comprising a base comprising a pallet or slipsheet; one or more products supported by the base; a hood fitting over the one or more products comprising a containment selected from the group consisting of a shrink hood or a stretch hood; wherein the hood comprises a tear tape attached to the interior of the hood.
- another aspect of the present invention comprises a package shipment system comprising; a base comprising a pallet or slipsheet; one or more products supported by the base; a hood fitting over the one or more products comprising a containment selected from the group consisting of a shrink hood or a stretch hood; wherein the hood comprises a tear tape having a rough edge for tearing the hood and the tear tape attached to the interior of the hood.
- another aspect of the present invention comprises package shipment system comprising a base comprising a pallet or slipsheet; one or more products supported by the base; a hood fitting over the one or more products comprising a containment selected from the group consisting of a shrink hood or a stretch hood; wherein the hood comprises a tear tape for tearing the hood and the tear tape is attached to the interior of the hood and covers a line of laser perforations.
- plastic is defined herein as any polymeric material that is capable of being shaped or molded, with or without the application of heat.
- thermoplastic is defined herein as a high polymer that softens when exposed to heat and returns to its original condition when cooled. Usually plastics are a homo-polymers or co-polymers of high molecular weight. Plastics fitting this definition include, but are not limited to, polyolefins, polyesters, nylon, vinyl, acrylic, polycarbonates, polystyrene, and polyurethane.
- These technologies generally use plastic films that are resistant to formation of holes and tear propagation, therefore traditional tear strip technology, such as simple parallel lines of zipper perforations, is not suitable.
- the shrink hoods or stretch hoods of the invention preferably lack zipper perforations running the length of the tear tape. The emphasis in the development of shrink hoods and stretch hoods has been to provide product security on a pallet, for example, rather than to create convenience for accessing these products at a later time.
- Tear tapes may be applied in a variety of ways.
- the tear tapes may be extruded into the thermoplastic film of the shrink hood or stretch hood or extruded or otherwise formed separately and then attached to the surface thereof. Examples of tear tapes are disclosed in U.S. Pat. No. 6,513,657 to Sheehan, Jr., which is hereby incorporated in its entirety herein. Tear tapes could be applied to the interior of the hood during the process by which the bag for the shrink or stretch hood is made on a extruding machine, as the bag is tubed, or as flat material that is then converted to a hood.
- the tear tape could also be post applied, by adhesive or other means, to the interior or exterior of the shrink or stretch hood before the hood is fitted to the palletized products or already on the palletized products.
- the tear tape tears the material of the hood when pulled outwards, and the tear tape could optionally weaken the hood material when applied either through mechanical or other active means, such as the chemical activity of an adhesive.
- the tape application equipment could create a line of perforation, for example laser perforation, as the tape is applied.
- the application equipment could locally alter the film properties of the hood adjacent to the tear tape by mechanical, electrical (e.g. corona), thermal or chemical means to enhance the tape application and subsequent tearing process.
- the tear tape itself could also alter these properties and modify the film surface or structure of the stretch or shrink hood and impart properties desirable to the functionality of the tear tape, for example strength in a horizontal direction and weakness in a vertical direction.
- the tear tape could be colored or printed to bring attention to its presence or function.
- FIG. 1 shows a shrink or stretch hood 10 being applied over a plurality of unitized products 12 on a pallet or slipsheet 14 .
- the hood 10 contains a single tear tape 16 , consisting of tape, bead, line of material, or seam, on the interior of the hood and running vertically from top to bottom of the hood 10 .
- the hood 10 can have a cutout or perforation 18 with allows the user to grab and pull the tear tape 16 and remove or partially remove the hood 10 .
- FIG. 2 shows a shrink or stretch hood 20 fully covering the top and sides of a plurality of unitized products on a pallet or slipsheet 24 .
- the tear tape 26 extends from the hood seam 27 at the top of the hood 20 to the bottom of the hood 20 at the pallet or slipsheet 24 .
- FIG. 3 shows a shrink or stretch hood 30 covering the sides and part of the top of a plurality of unitized products 32 on a pallet or slipsheet 34 .
- the tear tape 36 extends from the open top 38 of the hood 30 to the bottom 39 of the hood 30 at the pallet or slipsheet 34 .
- FIG. 4 is an exploded view of one embodiment of the cutout or perforation 18 of FIG. 1 .
- the slit 40 allows access for opening the hood.
- FIG. 5 is another exploded view of another embodiment of the cutout or perforation 18 of FIG. 1 .
- An opening 50 is cut in the hood 52 in a shape to create pull tabs 54 having a portion of the tear tape 56 for pulling and removing the tear tape 56 .
- FIG. 6 is a perspective view of a portion of a pallet 60 containing bags 62 of material.
- a hood 64 fits over the pallet 60 and the bags 62 and a tear tape 66 extends vertically centered in the space between the bags 62 .
- FIG. 7 is a top view of a portion of FIG. 6 showing the hood 64 , the interior tear tape 66 and the bags 62 .
- FIG. 8 is a front view of a tear tape 80 having straight sides 82 and underneath the hood film 81 .
- FIG. 9 is a front view of a shearing tear tape 90 having saw blade edges or cutting edges 92 and underneath the hood film 91 .
- the tear tape 90 might have advantages in shearing extremely tough film material.
- FIGS. 10 a - 10 d show alternative embodiments of the tear tape on a palletized product.
- FIG. 10 a shows multiple tear tapes 101 on adjacent sides of the shrink or stretch hood.
- FIG. 10 b shows a multi-piece tear tape 102 extending from the bottom to the top of the hood.
- FIG. 10 c shows an angular tear tape 103 extending across two sides of the hood.
- FIG. 10 d shows a combination tear tape 104 extending horizontally and vertically on multiple sides and the top of the hood.
- the shearing tear tape 90 in FIG. 9 might have rough or jagged edges, like a saw blade, to induce shearing the shrink hood or stretch hood.
- the shearing tear tape can be constructed out of a variety of materials including a tougher plastic or nonwoven having greater tensile strength or orientation, a plastic or nonwoven material having an abrasive edge, or a metallic material.
- the shearing tear tape might have a rough edge or edges that incorporate hard abrasive materials (e.g., having a Mohs' hardness greater than about 8) to provide the tear tape with a more aggressive abrasive surface and aid in shearing the hood.
- Suitable abrasive materials include, without limitation, aluminum oxide including ceramic aluminum oxide, heat-treated aluminum oxide and white-fused aluminum oxide; as well as silicon carbide, alumina zirconia, diamond, ceria, cubic boron nitride, garnet, and combinations of the foregoing.
- the average particle sizes of the foregoing abrasives can range from about 1 to about 2000 microns.
- the shrink hood or stretch hood may have a line of perforations, formed for example by laser perforations as described in PCT App. WO2006/063609 to Groeneweg et al. and PCT App. WO2007/050559 to Wiker et al. also describing appropriate film technology, both of which are incorporated herein in their entirety.
- the laser perforations as opposed to mechanical perforations, may provide a line for tearing the hood without weakening the hood that would induce tearing during the process of forming the hood on the palletized product or during shipping, etc.
- the tear tape 80 may cover or extend on both sides of the laser perforations 84 in the hood film 81 as in FIG.
- the tear tape 90 may be adjacent to the laser perforations 94 in the hood film 91 as in FIG. 9 , where the edge 92 of the shearing tear tape may interact with the perforations during the removal process.
- the laser perforations can go completely through the hood film or only partially go through the film to weaken the hood film.
- This invention can be applied to all palletized products shipped in shrink hood and stretch hoods. These products can include single or multiple units in the form of boxes, bags, items, or any other satisfactory unit form for conveying on pallets. It may also allow fragile products that might be damaged in the normal process of removing a shrink hood to be shipped that way. Palletized products include boxes, bags, bottles, cans, any packaging form, bricks, blocks, construction materials, or anything shipped in this general form.
Abstract
A packaging system for products on a pallet or slipsheet has a shrink hood or stretch hood with a tear tape for easy opening at the product use location without damaging the product. The tear tape may be a shearing tear tape to allow for cutting through the tough film of the hood or the tear tape may be aligned with laser perforations to cooperate with the tear tape.
Description
- 1. Field of the Invention
- The present invention relates to tear tapes on shrink hoods and stretch hoods for products on a pallet.
- 2. Description of the Related Art
- Tear strips comprising a thin thread or string of fiber placed within the container at its top are shown in U.S. Pat. No. 3,543,343 to Staller, as a means to open sealed containers along a single tear line. The drawback of such tear strips is that the tear line may deviate from the top of the bag and propagate into other container elements and compromise its strength, shape and operation. U.S. Pat. No. 3,827,427 to Uramoto defines two tear lines, one on each lip of a bag mouth, between pairs of ribs to contain the propagating tear. In U.S. Pat. No. 5,022,530 to Zieke, a tear strip comprised of a bead of thermoplastic material is provided to define a tear line generally along the top edge of the flexible container.
- Tear strips are typically comprise weakened lines for tearing across sealed webs, for example to gain access to the mouth of a bag. U.S. Pat. No. 3,198,228 to Naito and U.S. Pat. No. 3,780,781 to Uramoto both describe tear strips having such weakened regions. U.S. Pat. 2002/0162766 to Saso et al. describes a shipping case alternative having an opaque film and a clear film shrink wrapped around packages and the clear film having a tear strip comprising parallel lines of zipper perforations extending along one of the shrink films. The 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. U.S. Pat. 2001/0025800 to Marco describes a single piece carrier for a six pack of cans having a tear or removal strip that separates the ring carrier from the film sleeve.
- Various processes have been developed for securing product packages on a pallet. One such process is the so-called spiral wrapping process where a packaging material dispenser is kept in a fixed position while the load and the pallet rotates around a central vertical axis or oppositely: the load is fixed and the dispenser is circulated around the load while dispensing packaging material. The packaging material is dispensed onto the load by the rotation of the load that pulls the packaging material from the dispenser, as described in U.S. Pat. No. 5,005,335 to Yourgalite et al. An alternative process is the shrink process. Initially, the load is confined in a plastic hood, usually pulled down on the load by an appropriate frame surrounding the load in a horizontal plane, and subsequently the plastic hood is made to shrink by applying a fast heating process. The shrunk plastic hood serves the dual purpose of resiliently confining and holding the load units together and protecting the load units against the environment during transport, e.g. water and dust. Yet, another process is the stretch hood wrapping. A rectangular frame with four holding means-one in every corner-stretches the opening of a plastic hood to a larger horizontal projection than the load on the pallet to be wrapped and pulls down the hood on the load.
- Suppliers are increasing shipping goods to retails stores on pallets with the products protected by shrink hoods or stretch hoods. At the retail store, the product pallet is typically opened by slicing the shrink hood with a knife to remove the shrink hood. This can cause inadvertent product damage. PCT App. WO2005/042346 to Nielsen et al. describes stretch hoods for packaging bulk goods. In order to facilitate the unwrapping at the destination point of the load, the method preferably comprises a further packaging step, wherein perforating means, e.g. a knife or a punching machine, is applied to perforate the packaging material in selected points or areas. However, these perforations could lead to weakening the stretch hood or to product damage during the perforation step.
- In order to solve this problem, a tear tape can be attached to interior or exterior of the shrink hood or stretch hood to facilitate removal of the shrink hood without product damage. Although a variety on tear tape technologies have been applied to individual containers and small combinations of containers, tear tapes have not been applied to shrink hoods or stretch hoods.
- The foregoing aspects and others will be readily appreciated by the skilled artisan from the following description of illustrative embodiments when read in conjunction with the accompanying drawings, wherein:
-
FIG. 1 is a perspective view of a one embodiment of the invention; -
FIG. 2 is a perspective view of a one embodiment of the invention; -
FIG. 3 is a perspective view of a one embodiment of the invention; -
FIG. 4 is a front view a portion of one embodiment of the invention; -
FIG. 5 is a front view a portion of one embodiment of the invention; -
FIG. 6 is a perspective view of a portion of one embodiment of the invention; -
FIG. 7 is a top view of a portion of one embodiment of the invention; -
FIG. 8 is a front view of a portion of one embodiment of the invention; -
FIG. 9 is a front view of a portion of one embodiment of the invention; and -
FIGS. 10 a-d are perspective views of embodiments of the invention. - Reference will now be made to the drawings wherein like numerals refer to like parts throughout. As used herein, positional terms, such as “bottom” and “top” and the like, and directional terms, such as “up”, “down” and the like, are employed for ease of description in conjunction with the drawings. Further, the terms “inner”, “interior”, “inwardly” and the like, refer to positions and directions toward the geometric center of embodiments of the present invention and designated parts thereof. The terms “outer”, “exterior”, “outwardly”, and the like, refer to positions and directions away from the geometric center. None of these terms is meant to indicate that the described components must have a specific orientation except when specifically set forth.
- Figures illustrating the components of this invention and the container show some conventional mechanical elements that are known and that will be recognized by one skilled in the art. The detailed descriptions of such elements are not necessary to an understanding of the invention, and accordingly, are herein presented only to the degree necessary to facilitate an understanding of the novel features of the present invention.
- In accordance with the above objects and those that will be mentioned and will become apparent below, one aspect of the present invention comprises a package shipment system comprising a base comprising a pallet or slipsheet; one or more products supported by the base; a hood fitting over the one or more products comprising a containment selected from the group consisting of a shrink hood or a stretch hood; wherein the hood comprises a tear tape attached to the interior of the hood.
- In accordance with the above objects and those that will be mentioned and will become apparent below, another aspect of the present invention comprises a package shipment system comprising; a base comprising a pallet or slipsheet; one or more products supported by the base; a hood fitting over the one or more products comprising a containment selected from the group consisting of a shrink hood or a stretch hood; wherein the hood comprises a tear tape having a rough edge for tearing the hood and the tear tape attached to the interior of the hood.
- In accordance with the above objects and those that will be mentioned and will become apparent below, another aspect of the present invention comprises package shipment system comprising a base comprising a pallet or slipsheet; one or more products supported by the base; a hood fitting over the one or more products comprising a containment selected from the group consisting of a shrink hood or a stretch hood; wherein the hood comprises a tear tape for tearing the hood and the tear tape is attached to the interior of the hood and covers a line of laser perforations.
- Before describing the present invention in detail, it is to be understood that this invention is not limited to particularly exemplified systems that may, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments of the invention only, and is not intended to limit the scope of the invention in any manner.
- All publications, patents and patent applications cited herein, whether supra or infra, are hereby incorporated by reference in their entirety to the same extent as if each individual publication, patent or patent application was specifically and individually indicated to be incorporated by reference. The citation of any document is not to be construed as an admission that it is prior art with respect to the present invention.
- As used herein, forms of the words “comprise”, “have”, and “include” are legally equivalent and open-ended and do not exclude additional unrecited elements, compositional components, or method steps. Accordingly, the term “comprising” encompasses the more restrictive terms “consisting essentially of” and “consisting of”.
- It must be noted that, as used in this specification and the appended claims, the singular forms “a,” “an” and “the” include plural referents unless the content clearly dictates otherwise. Thus, for example, reference to a “surfactant” includes two or more such surfactants.
- Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention pertains. Although a number of methods and materials similar or equivalent to those described herein can be used in the practice of the present invention, only exemplar materials and methods are described herein.
- In the application, effective amounts are generally those amounts listed as the ranges or levels of ingredients in the descriptions, which follow hereto. All percentages, ratios and proportions are by weight, and all temperatures are in degrees Celsius (° C.), unless otherwise specified. All measurements are in SI units, unless otherwise specified. It should be understood that every limit given throughout this specification will include every lower, or higher limit, as the case may be, as if such lower or higher limit was expressly written herein. Every range given throughout this specification will include every narrower range that falls within such broader range, as if such narrower ranges were all expressly written herein.
- The term “plastic” is defined herein as any polymeric material that is capable of being shaped or molded, with or without the application of heat. The term “thermoplastic” is defined herein as a high polymer that softens when exposed to heat and returns to its original condition when cooled. Usually plastics are a homo-polymers or co-polymers of high molecular weight. Plastics fitting this definition include, but are not limited to, polyolefins, polyesters, nylon, vinyl, acrylic, polycarbonates, polystyrene, and polyurethane.
- U.S. Pat. No. 6,012,266 and U.S. Pat. No. 5,544,472 to Koskinen et al. and U.S. Pat. App. 2005/0284783 to May describe shrink hoods for packaging bulk goods and are hereby incorporated in their entirety herein. PCT App. WO2005/042346 to Nielsen describes stretch hoods, and is hereby incorporated in its entirety herein. Suitable film materials are described in U.S. Pat. App. 2006/0094824 to Roulin et al., U.S. Pat. App. 2005/0037219 to Ohlsson et al., PCT App. WO2007/129078 to Nilsen et al, PCT App. WO2006/076917 to Erikson and PCT App. WO2007/044544 to Parkinson et al, and are hereby incorporated in their entirety herein. These technologies generally use plastic films that are resistant to formation of holes and tear propagation, therefore traditional tear strip technology, such as simple parallel lines of zipper perforations, is not suitable. The shrink hoods or stretch hoods of the invention preferably lack zipper perforations running the length of the tear tape. The emphasis in the development of shrink hoods and stretch hoods has been to provide product security on a pallet, for example, rather than to create convenience for accessing these products at a later time.
- Tear tapes may be applied in a variety of ways. The tear tapes may be extruded into the thermoplastic film of the shrink hood or stretch hood or extruded or otherwise formed separately and then attached to the surface thereof. Examples of tear tapes are disclosed in U.S. Pat. No. 6,513,657 to Sheehan, Jr., which is hereby incorporated in its entirety herein. Tear tapes could be applied to the interior of the hood during the process by which the bag for the shrink or stretch hood is made on a extruding machine, as the bag is tubed, or as flat material that is then converted to a hood. The tear tape could also be post applied, by adhesive or other means, to the interior or exterior of the shrink or stretch hood before the hood is fitted to the palletized products or already on the palletized products. The tear tape tears the material of the hood when pulled outwards, and the tear tape could optionally weaken the hood material when applied either through mechanical or other active means, such as the chemical activity of an adhesive. The tape application equipment could create a line of perforation, for example laser perforation, as the tape is applied. The application equipment could locally alter the film properties of the hood adjacent to the tear tape by mechanical, electrical (e.g. corona), thermal or chemical means to enhance the tape application and subsequent tearing process. The tear tape itself could also alter these properties and modify the film surface or structure of the stretch or shrink hood and impart properties desirable to the functionality of the tear tape, for example strength in a horizontal direction and weakness in a vertical direction. The tear tape could be colored or printed to bring attention to its presence or function.
-
FIG. 1 shows a shrink or stretchhood 10 being applied over a plurality ofunitized products 12 on a pallet orslipsheet 14. Thehood 10 contains asingle tear tape 16, consisting of tape, bead, line of material, or seam, on the interior of the hood and running vertically from top to bottom of thehood 10. Thehood 10 can have a cutout orperforation 18 with allows the user to grab and pull thetear tape 16 and remove or partially remove thehood 10. -
FIG. 2 shows a shrink or stretchhood 20 fully covering the top and sides of a plurality of unitized products on a pallet orslipsheet 24. Thetear tape 26 extends from thehood seam 27 at the top of thehood 20 to the bottom of thehood 20 at the pallet orslipsheet 24. -
FIG. 3 shows a shrink or stretchhood 30 covering the sides and part of the top of a plurality ofunitized products 32 on a pallet orslipsheet 34. Thetear tape 36 extends from theopen top 38 of thehood 30 to the bottom 39 of thehood 30 at the pallet orslipsheet 34. -
FIG. 4 is an exploded view of one embodiment of the cutout orperforation 18 ofFIG. 1 . There is aslit 40 in thehood 42 across and through thetear tape 44 and there areperforations 46 extending from the ends of theslit 48. Theslit 40 allows access for opening the hood. -
FIG. 5 is another exploded view of another embodiment of the cutout orperforation 18 ofFIG. 1 . Anopening 50 is cut in thehood 52 in a shape to createpull tabs 54 having a portion of thetear tape 56 for pulling and removing thetear tape 56. -
FIG. 6 is a perspective view of a portion of apallet 60 containingbags 62 of material. Ahood 64 fits over thepallet 60 and thebags 62 and atear tape 66 extends vertically centered in the space between thebags 62. -
FIG. 7 is a top view of a portion ofFIG. 6 showing thehood 64, theinterior tear tape 66 and thebags 62. -
FIG. 8 is a front view of atear tape 80 havingstraight sides 82 and underneath thehood film 81. -
FIG. 9 is a front view of ashearing tear tape 90 having saw blade edges or cuttingedges 92 and underneath thehood film 91. Thetear tape 90 might have advantages in shearing extremely tough film material. -
FIGS. 10 a-10 d show alternative embodiments of the tear tape on a palletized product.FIG. 10 a showsmultiple tear tapes 101 on adjacent sides of the shrink or stretch hood.FIG. 10 b shows amulti-piece tear tape 102 extending from the bottom to the top of the hood.FIG. 10 c shows anangular tear tape 103 extending across two sides of the hood.FIG. 10 d shows acombination tear tape 104 extending horizontally and vertically on multiple sides and the top of the hood. - The
shearing tear tape 90 inFIG. 9 might have rough or jagged edges, like a saw blade, to induce shearing the shrink hood or stretch hood. The shearing tear tape can be constructed out of a variety of materials including a tougher plastic or nonwoven having greater tensile strength or orientation, a plastic or nonwoven material having an abrasive edge, or a metallic material. The shearing tear tape might have a rough edge or edges that incorporate hard abrasive materials (e.g., having a Mohs' hardness greater than about 8) to provide the tear tape with a more aggressive abrasive surface and aid in shearing the hood. Suitable abrasive materials include, without limitation, aluminum oxide including ceramic aluminum oxide, heat-treated aluminum oxide and white-fused aluminum oxide; as well as silicon carbide, alumina zirconia, diamond, ceria, cubic boron nitride, garnet, and combinations of the foregoing. The average particle sizes of the foregoing abrasives can range from about 1 to about 2000 microns. - The shrink hood or stretch hood may have a line of perforations, formed for example by laser perforations as described in PCT App. WO2006/063609 to Groeneweg et al. and PCT App. WO2007/050559 to Wiker et al. also describing appropriate film technology, both of which are incorporated herein in their entirety. The laser perforations, as opposed to mechanical perforations, may provide a line for tearing the hood without weakening the hood that would induce tearing during the process of forming the hood on the palletized product or during shipping, etc. The
tear tape 80 may cover or extend on both sides of thelaser perforations 84 in thehood film 81 as inFIG. 8 , so that the film tears along the laser perforations as the tear tape is pulled. Thetear tape 90 may be adjacent to thelaser perforations 94 in thehood film 91 as inFIG. 9 , where theedge 92 of the shearing tear tape may interact with the perforations during the removal process. The laser perforations can go completely through the hood film or only partially go through the film to weaken the hood film. - This invention can be applied to all palletized products shipped in shrink hood and stretch hoods. These products can include single or multiple units in the form of boxes, bags, items, or any other satisfactory unit form for conveying on pallets. It may also allow fragile products that might be damaged in the normal process of removing a shrink hood to be shipped that way. Palletized products include boxes, bags, bottles, cans, any packaging form, bricks, blocks, construction materials, or anything shipped in this general form.
- While this detailed description includes specific examples according to the invention, those skilled in the art will appreciate that there are many variations of these examples that would nevertheless fall within the general scope of the invention and for which protection is sought in the appended claims.
Claims (21)
1. A package shipment system comprising;
a. a base comprising a pallet or a slipsheet;
b. one or more products supported by the base;
c. a hood fitting over the one or more products wherein the hood is selected from the group consisting of a shrink hood or a stretch hood; and
d. wherein the hood comprises a tear tape attached to the interior of the hood.
2. The system of claim 1 , wherein tear tape extends vertically from the top to the bottom of the hood.
3. The system of claim 1 , wherein the hood has a hood seam at the top of the hood and the tear tape extends from the hood seam.
4. The system of claim 1 , wherein the hood has an opening containing one or more pull tabs having a portion of tear tape.
5. The system of claim 1 , wherein the hood has a slit through the tear tape allowing access for opening the hood.
6. The system of claim 1 , wherein there is more than one product supported on the base.
7. The system of claim 1 , wherein there are more than one product and the products are bags of material and the tear tape is vertically centered in the space between the bags.
8. The system of claim 1 , wherein the tear tape is a shearing tape having rough or jagged edges.
9. The system of claim 1 , wherein the tear tape comprises abrasive particles to aid in shearing the hood.
10. The system of claim 1 , wherein the hood comprises a single tear tape.
11. The system of claim 1 , wherein the hood comprises multiple tear tapes and at least two of the tear tapes are on adjacent sides of the hood.
12. The system of claim 1 , wherein the hood comprises a multi-piece tear tape.
13. The system of claim 12 , wherein the multi-piece tear tape extends vertically from the top of the hood to the bottom of the hood.
14. The system of claim 1 , wherein the hood lacks parallel lines of zipper perforations running the length of the tear tape.
15. The system of claim 1 , wherein the hood has a line of laser perforations adjacent to the tear tape.
16. The system of claim 1 , wherein the tear tape covers a line of laser perforations.
17. The system of claim 1 , wherein the tear tape is an angular tear tape.
18. A package shipment system comprising;
a. a base comprising a pallet or a slipsheet;
b. one or more products supported by the base;
c. a hood fitting over the one or more products wherein the hood is selected from the group consisting of a shrink hood or a stretch hood; and
d. wherein the hood comprises a tear tape having a rough edge for tearing the hood and the tear tape is attached to the interior of the hood.
19. The system of claim 18 , wherein the hood has a line of laser perforations adjacent to the tear tape.
20. A package shipment system comprising;
a. a base comprising a pallet or a slipsheet;
b. one or more products supported by the base;
c. a hood fitting over the one or more products wherein the hood is selected from the group consisting of a shrink hood or a stretch hood; and
d. wherein the hood comprises a tear tape for tearing the hood.
21. The package shipment system of claim 20 , wherein the tear tape is attached to the interior of the hood and covers a line of laser perforations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/053,919 US20090238501A1 (en) | 2008-03-24 | 2008-03-24 | Pallet Hood Tear Tape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/053,919 US20090238501A1 (en) | 2008-03-24 | 2008-03-24 | Pallet Hood Tear Tape |
Publications (1)
Publication Number | Publication Date |
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US20090238501A1 true US20090238501A1 (en) | 2009-09-24 |
Family
ID=41089022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/053,919 Abandoned US20090238501A1 (en) | 2008-03-24 | 2008-03-24 | Pallet Hood Tear Tape |
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US (1) | US20090238501A1 (en) |
Cited By (4)
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---|---|---|---|---|
US20130015083A1 (en) * | 2011-07-15 | 2013-01-17 | Airdex International, Inc. | System for facilitating security check of shipment of cargo |
US20140158482A1 (en) * | 2012-12-11 | 2014-06-12 | Arvinmeritor Technology, Llc | Brake caliper assembly having a spacer tape and a method of manufacture |
DE102015011766A1 (en) * | 2015-09-14 | 2017-03-16 | Beumer Gmbh & Co. Kg | Packaging unit with stretch wrapping |
US10889400B2 (en) * | 2016-03-03 | 2021-01-12 | Freixenet, S.A. | Method of unwrapping a palletized load and device for carrying out said method |
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US20130015083A1 (en) * | 2011-07-15 | 2013-01-17 | Airdex International, Inc. | System for facilitating security check of shipment of cargo |
US20140158482A1 (en) * | 2012-12-11 | 2014-06-12 | Arvinmeritor Technology, Llc | Brake caliper assembly having a spacer tape and a method of manufacture |
US9068610B2 (en) * | 2012-12-11 | 2015-06-30 | Arvinmeritor Technology, Llc | Brake caliper assembly having a spacer tape and a method of manufacture |
DE102015011766A1 (en) * | 2015-09-14 | 2017-03-16 | Beumer Gmbh & Co. Kg | Packaging unit with stretch wrapping |
DE102015011766B4 (en) * | 2015-09-14 | 2021-01-14 | BEUMER Group GmbH & Co. KG | Packaging unit with stretch film wrapping |
US10889400B2 (en) * | 2016-03-03 | 2021-01-12 | Freixenet, S.A. | Method of unwrapping a palletized load and device for carrying out said method |
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