EP2635499A1 - Improvements in and relating to packaging - Google Patents

Improvements in and relating to packaging

Info

Publication number
EP2635499A1
EP2635499A1 EP11838297.7A EP11838297A EP2635499A1 EP 2635499 A1 EP2635499 A1 EP 2635499A1 EP 11838297 A EP11838297 A EP 11838297A EP 2635499 A1 EP2635499 A1 EP 2635499A1
Authority
EP
European Patent Office
Prior art keywords
slits
closed cell
sheet
cell board
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11838297.7A
Other languages
German (de)
French (fr)
Inventor
Patrick Petrus Antonius Maria Van Berlo
Jason Paul Rogers
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.)
Corcel IP Ltd
Original Assignee
Corcel IP Ltd
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 Corcel IP Ltd filed Critical Corcel IP Ltd
Publication of EP2635499A1 publication Critical patent/EP2635499A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/4266—Folding lines, score lines, crease lines
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/50—Internal supporting or protecting elements for contents
    • B65D5/5028—Elements formed separately from the container body
    • B65D5/5035—Paper elements
    • B65D5/5047—Blocks
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/50—Internal supporting or protecting elements for contents
    • B65D5/5028—Elements formed separately from the container body
    • B65D5/5035—Paper elements
    • B65D5/5069—Capping elements, i.e. elements which are located onto one or more ends of the contents, before the contents are inserted into the package
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/053—Corner, edge or end protectors
    • B65D81/054—Protectors contacting two generally perpendicular surfaces of the packaged article, e.g. edge protectors
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/053—Corner, edge or end protectors
    • B65D81/055—Protectors contacting three surfaces of the packaged article, e.g. three-sided edge protectors
    • 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
    • B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D2581/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D2581/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D2581/051—Details of packaging elements for maintaining contents at spaced relation from package walls, or from other contents
    • B65D2581/052—Materials
    • B65D2581/053—Paper in general, e.g. paperboard, carton, molded paper
    • 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
    • B65D2585/00—Containers, packaging elements or packages specially adapted for particular articles or materials
    • B65D2585/68—Containers, packaging elements or packages specially adapted for particular articles or materials for machines, engines, or vehicles in assembled or dismantled form
    • B65D2585/6802—Containers, packaging elements or packages specially adapted for particular articles or materials for machines, engines, or vehicles in assembled or dismantled form specific machines, engines or vehicles
    • B65D2585/6835—Containers, packaging elements or packages specially adapted for particular articles or materials for machines, engines, or vehicles in assembled or dismantled form specific machines, engines or vehicles audio-visual devices
    • B65D2585/6837—Containers, packaging elements or packages specially adapted for particular articles or materials for machines, engines, or vehicles in assembled or dismantled form specific machines, engines or vehicles audio-visual devices tv or computers

Definitions

  • the present invention relates to improvements in and relating to packaging.
  • improvements in and relating to protective edges and packaging systems making use of closed cell board including: shrouds, corner boards, u-boards, tube boards and sleeves.
  • closed cell board refers to composite paper board which has at least one first liner sheet and at jeast one second liner sheet which respectively sandwich a core having a plurality of cells there between.
  • closed cell board includes honeycomb paper board which has a honeycomb core, or X- board as is manufactured by Xanita of South Africa or 3CTM board as manufactured by Corcel.
  • X- board and 3CTM board are composite boards comprising a core manufactured from adjacent strips of single or double face corrugated paperboard sandwiched between two liner sheets so that the flutes run vertically (i.e. the flute channels run from the top liner sheet to the bottom liner sheet of a horizontally oriented composite board).
  • the term closed cell board also includes non-paper based products to which the present invention may also have application including corflute and foam core board which also have a core comprising a number of cells.
  • the present invention in one aspect is concerned with protective edges used to prevent damage to packaged freight on skids or pallets occurring whilst loading/unloading or during transport.
  • Paper corner boards can be formed in a variety of different ways.
  • paper corner boards are formed by a multi-step process which involves:
  • corner boards manufactured by this process tend to splay outwardly when straps are tensioned to secure stacked packaging as a unit, causing the sides of the corner boards to move out of aligned contact with the sides of the packaging.
  • a reverse slit score is made by cutting through one facing paper and through the core material, and then by cutting the opposite facing paper at another location to create a fan folding effect in the panel.
  • a single slit score is produced by cutting through one facing paper and the entire core, leaving the other facing paper intact to create a folding hinge in the panel.
  • this fan folding panel as a protective edge is not taught or contemplated by the aforementioned website.
  • a further problem in the packaging industry is the need to create inexpensive and effective replacements or alternatives to polystyrene packaging.
  • packaging solutions which can be used for protecting fragile items which need to be transported and/or stored.
  • the present invention in one aspect provides a simplified and more effective manner of manufacture for producing protective edges, shrouds including u-shaped channels and sleeves, all made of closed cell board.
  • the method of the present invention effectively shortcuts the current manufacturing process and reverses one step in a counterintuitive manner to create cheaper and more effective products such as edge protectors including corner boards and u-shaped channels.
  • the reversed step of the present invention effectively involves folding a pre-slitted board inside out so that the slit forms an outside corner.
  • the present invention utilises the reverse step of inside out folding so that the .slit is located on the outside corner of the corner board (not the protected inside corner such as occurs in a conventionally constructed corner board).
  • the reversal of this one step surprisingly mitigates many of the other manufacturing steps employed to produce conventional paper corner boards.
  • the present invention also relates to a new form of closed cell board which has first and second liner sheet(s) on either side of the core wherein the relative thickness and/or strength of the first and second line sheets are different.
  • the first liner sheet may comprise a single sheet of paper board and the second liner sheet may be a laminate of two or more sheets of paper board.
  • the present invention additionally relates to blanks for creating protective edges and shrouds.
  • the present invention also relates to packaging systems capable of being used in place of polystyrene (EPS) packaging.
  • EPS polystyrene
  • a closed cell board including a core sandwiched between first and second liner sheets wherein the second liner sheet has a stronger construction than the first liner sheet, or vice versa.
  • the closed cell board may be made of paper and may resemble 3CTM board manufactured by Corcel - www.corcel.com.
  • a method of manufacturing a protective edge from a sheet of closed cell composite board which has first and second liner sheets on either side of a core comprises the step of: a) cutting a line through: the first liner sheet; and the core; of the closed cell board to form a slit that extends along, or is parallel to, a major axis of the board but wherein said slit does not penetrate the second liner sheet.
  • the protective edge may be in the form of a corner board.
  • the present invention also provides an inexpensive way of producing a protective shroud which may: be in the form of a sleeve or u-shaped channel; or a sheet of material which has at least one edge in the form of a u-shaped channel or a sleeve, and which can be used individually, or combination, to protect an object, or part thereof, covered by the shroud.
  • a method of manufacturing a protective shroud from a sheet or strip of closed cell board which has first and second liner sheets on either side of a core comprises the step of: a) cutting at least two parallel lines through the first liner sheet and core of the closed cell board to form slits that are parallel to one common axis of the board but wherein said slits do not penetrate the second liner sheet.
  • a method substantially as described above wherein the method comprises the further step of: b) folding the closed cell board along each slit to create three or more sides angled with respect to one another with the slits forming an external corner or corners of the protective shroud.
  • the protective shroud may preferably be a sleeve, or a u- shaped channel, but can include a sheet of planar material which has one or more edges, which have been manipulated as per the method above to form a u-shape channel, or a sleeve, along the edge(s) of the otherwise planar sheet.
  • the present invention also provides a protective shroud which: - may be in the form of a sleeve or u-shaped channel; or - may be in the form of a sheet of material which has at least one edge including a u-shaped channel or a sleeve, and which can be used individually, or combination, to protect an object, or part thereof, covered by the shroud. Pre-formed blanks for creating protective shrouds are also covered by the present invention.
  • a protective shroud blank made from a sheet or strip of closed cell board which includes a first and second liner sheets on either side of a core and wherein the sheet or strip of closed cell board includes: ' two parallel slits for subsequently creating a u-shaped channel; or three or more parallel slits for subsequently creating a sleeve; and wherein the slits are cut through the first liner sheet and core of the closed cell board and wherein said slits do not penetrate the second liner sheet.
  • a protective shroud blank made from a sheet of closed cell board which includes a planar surface and first and second liner sheets on either side of a core and wherein formed along at least one edge of the planar surface are: two parallel slits for subsequently creating a u-shaped channel; or three or four parallel slits for subsequently creating a sleeve; wherein the slits are cut through the first liner sheet and core of the closed cell board wherein said slits are parallel to said edge and wherein said slits do not penetrate the second liner sheet.
  • a protective shroud made from a sheet or strip of closed cell board which includes a first and second liner sheets on either side of a core and wherein the sheet or strip of closed cell board includes: two parallel slits for subsequently creating a u-shaped channel; or three or more parallel slits for subsequently creating a sleeve; and wherein the slits are cut through the first liner sheet and core of the closed cell board and wherein said slits do not penetrate the second liner sheet and wherein said u-shaped channel(s) and/or said sleeve(s) have outside corner edges in the form of splits formed by folding along the parallel slits cut through the first liner sheet and core of the closed cell board.
  • a protective shroud made from a sheet of closed cell board which includes a planar surface and first and second liner sheets on either side of a core and wherein formed along at least one edge of the planar surface is/are: at least one u-shaped channel formed from two parallel slits; and/or at least one sleeve formed from three or more parallel slits; wherein the slits are cut through the first liner sheet and core of the closed cell board wherein said slits are parallel to said edge and wherein said slits do not penetrate the second liner sheet and wherein said u-shaped channel(s) and/or said sleeve(s) have outside corner edges in the form of splits formed by folding along the parallel slits cut through the first liner sheet and core of the closed cell board.
  • a protective edge or protective shroud made from a sheet of closed cell board substantially as described above to protect an object or an edge of an object.
  • a method of protecting an object or an edge of an object comprising the step of placing a protective edge or shroud made frgm a sheet of closed cell board substantially as described above around the object or edge of the object to be protected.
  • the principles of the present invention may also be employed in the manufacture of a container.
  • a closed cell board container which comprises:
  • the container above may include a further u-shaped channel which acts as a lid.
  • the present invention also provides an inexpensive alternative yet effective protective packaging system for say protecting an object such as, for instance, a flat screen TV or computer which can replace polystyrene.
  • a protective packaging system wherein the system includes: at least one protective shroud substantially as described above which, in use, can protect at least an edge or side and one surface of an object.
  • FIG. 1 shows a protective edge in the form of a corner board in accordance with one preferred embodiment of the present invention; shows a cross sectional view of a length of closed cell board which has been cut to form a slit ready for folding into the corner board of Figure 1 ; shows a cross sectional view of a length of closed cell board according to one preferred embodiment of the present invention which has a stronger liner sheet on one side of the core and which has been cut to form a slit ready for folding into the corner board resembling that of Figure 1 ; shows a corner board of the present invention protecting the edges of packaged product sitting on a pallet; shows a transverse cross sectional view through the corner board of Figure 1 ; shows a protective edge in the form of a u-shaped channel in accordance with a further preferred embodiment of the present invention; shows a front view box made from protective edges as shown in Figure 6 and from shrouds in the form of sleeves; shows a perspective view of a portion of a shrou
  • Figure 10 shows a bottom plan view of the sheet-like shroud in Figure 9, looking from direction indicated by arrow B;
  • Figure 11 - Figure 1 1 shows a protective shroud in the form of an elongated u- shaped channel which is used to complete the packaging system of Figures 9 and 10 as is shown in Figure 12, for a packaging system in accordance with one preferred embodiment of the present invention
  • Figure 12 - shows a cross sectional view of the packaging system of Figure 9 protecting a flat panel TV, taken along line A-A of the shroud in Figure 10 and illustrating how u-shaped channel of Figure 1 1 protects the reverse side of the TV;
  • Figure 13 - shows a schematic cross sectional view of a protective shroud in the form of a double corner board arrangement in accordance with one preferred embodiment of the present invention
  • Figure 14 - shows a schematic cross sectional view of a protective shroud in the form of a sleeve wherein the sleeve has multi-ply walls formed from a single sheet of 3C T!UI board manufactured by Corcel;
  • Figure 15 - shows a schematic cross sectional view of a sheet of Corcel 3CTM board which has been cut into a blank for the multi-ply walled sleeve of Figure 13;
  • Figure 16 - shows a schematic view of protective packaging system for a TV in accordance with a further preferred embodiment of the present invention. Best Modes and Illustrative Examples
  • a protective edge in the form of a corner board generally indicated by arrow 100.
  • the corner board 100 has a first side 1 and a second side 2 which exist on either side of a longitudinal split 3.
  • the split 3 forms an outside edge of the corner where the first and second sides 1 , 2 adjoin one another.
  • the first side 1 and second side 2 are created after a strip 90 of closed cell board, in the form of Corcel 3CTM paper board, has a line cut along a first liner sheet 1000 and through the core 3000 just shy of penetrating the second facing sheet 2000, to form a slit 300.
  • the slit 300 is preferably formed by a cutting device such as a rotating blade which travels along the central longitudinal axis of the strip 90.
  • the strip 90 is formed from closed cell board which has first liner sheet 1000 a core 3000 and second liner sheet 2000 in the form of a laminate made from two sheets of Kraft paper 2001 and 2002 which are bonded together with an EVA glue.
  • FIG. 1 shows a cross sectional view through the corner board 100 of Figure 1 and Figures 4a and 4b, and illustrates in greater detail slit 3 and as can be seen the core walls 1 b and 2b converge towards second liner sheet 2000 which help lessen the likelihood of anything other than narrow objects being able to contact the second liner sheet 2000.
  • two or more overlaid corner boards may be employed should additional protection be required.
  • the overlay solution is very cost competitive.
  • FIG. 6 there is shown a shroud in the form of a U-shaped channel 1000 which has two opposed side walls 1001 and 002 which are joined by a base 1003.
  • the walls 1001 and 1002 were originally in the same plane as the base 1003 but after splits 1001a and 1002a were formed through first liner sheet 1004 and core 1005, the side walls 1001 and 1002 were folded substantially at right angles to the plane of base 1003 to form the channel.
  • FIG 7 there is shown a box 2000 which has a body 2001 formed from sleeves 2002a and 2002b which are similar to those shown in Figure 8.
  • the box 2000 also has a lid 2003 and a base 2004.
  • the lid 2003 and base 2004 are in the form of U- shaped channels as discussed above in relation to Figure 6.
  • a sleeve 8000 which has 4 walls 8001 - 8004 formed in a manner substantially similar to that described for the u-shaped channel in Figure 6.
  • FIG 9 there is shown a cross sectional view along line A-A of a protective " sheet-like shroud 9000 (shown in Figure 10) which is made from a sheet of closed cell board, in the form of Corcel 3CTM paper board.
  • the shroud 9000 has a planar . section 9001 and is bounded by edges in the form of sleeves 9002.
  • a flat panel TV can sit within the boundaries formed by sleeves 9002, see also Figure 12.
  • Figure 10 shows part of a protective packaging system for protecting a flat panel TV.
  • the protective packaging system has a first protective component 9000 made from a shroud as shown in Figure 9 which protects the front screen, top, side and bottom edges of the TV.
  • the back of the TV is protected by a second protective component in the form of an elongated U-shaped channel 10002 having a planar base 10003 and two sides 10004 which extend from the base 9003 shown in Figure 1 1.
  • the sides 10004 of the U-shaped channel 10002 slot in between the sides of the TV (not shown) and sleeves 9002 (depicted with dotted lines in Figure 10) of first protective component 9000 as shown in Figure 12.
  • Figure 13 there is shown a double cornerboard arrangement 1200 which has an inner cornerboard 1201 and outer cornerboard 1202.
  • the cornerboards are the same as shown and discussed in relation to Figure 1.
  • the inner and outer cornerboards are glued to one another.
  • FIG 14 there is shown a multi-ply walled sleeve 1300 which is formed from a single sheet (blank) 1301 (shown in Figure 15).
  • the sleeve 1300 has outer corners in the form of splits 1302 formed when slits 1303 in the blank 1301 are folded to form the sleeve.
  • the blank 1301 has been formed by cutting slits 1303 through the first liner sheet 1304 and core 1305.
  • the slits 1303 do not penetrate second liner sheet 1306.
  • the corresponding wall segments in the sleeve 1300 and blank 1301 are shown as letters A-H.
  • FIG. 16 An alternative TV protective packaging system 1600 is shown in Figure 16.
  • the system consists of two sheet liner shrouds 1601 and 1602.
  • the protective packaging systems of Figure 9-12 and 16 are envisaged to be inserts which slide into a box as replacement for polystyrene.
  • the second liner sheet may be in the form of a laminate of two or more sheets of paper and the first liner sheet may be a single sheet of paper.
  • the second liner sheet may be in the form of a sheet of paper which has greater strength/thickness than that of the first liner sheet.
  • the closed cell board may be 3CTM board as manufactured by Corcel.
  • the closed cell composite board may be X-board or honeycomb paper board.
  • closed cell boards such as corflute and foam core board can also be used.
  • the outline of the closed cell board may vary depending on user requirements. Generally the outline will be square or rectangular, for instance, the closed cell board may be in the form of a square sheet of material or in the form of a strip of material.
  • the cutting operation for forming the slit may be achieved via a blade cutter which has the blade set to have a penetration depth which will cut through the first liner sheet and core but will not penetrate the second liner sheet of the closed cell board.
  • the major axis along which the slits are cut may be the longitudinal axis or lateral axis.
  • the major axis may be a diagonal or other angled axis.
  • the protective edge may be in the form of a corner board which has a single slit forming the external corner thereof.
  • the two sides of the comer board on either side of the slit may be folded to have any angle from substantially 1 - 180 degrees with respect to one another as required to protect an object or edge of an object.
  • the corner board is to protect a planar sheet as thin as a piece of paper the two sides may be folded substantially 180 degrees with respect to one another.
  • the corner board is to protect a large multi-sided object the two sides may be folded so that there is an angle of substantially 1 degree there between.
  • the two sides may be folded so as to have a substantially 90 degree angle there between so as to protect the edge of a box or group of stacked boxes.
  • the container may include a further sleeve which acts as a lid.
  • the container may comprise two u-shaped channels configured such that the walls of one u-shaped channel overlap at least portion of the corresponding side walls of the other u-shaped channel. The overlap between the walls providing a region of increased strength.
  • Any number of sleeves and u-shaped members may be used in forming the container depending on user requirements.
  • the container may be used inside a decorative box to provide protective packaging in a similar vein to polystyrene.
  • the shroud may in some preferred embodiments be a u-shaped channel which has folded corners formed from two spaced apart slits.
  • the shroud may be a sleeve formed from at least three spaced apart slits.
  • the sleeve may be a tube-like member which has a rectangular or other shaped transverse cross sectional profile. The cross sectional shape being dictated by the number of slits and folds.
  • the shroud may comprise two or more u-shaped channels which are effectively overlaid over one another to provide increased strength.
  • the shroud may comprise two or more sleeves which fit inside/around an adjacent sleeve.
  • the shroud may be a multi-ply walled sleeve formed by folding along a plurality of cuts which are spaced apart a distance so as to from walls which increase in size for each outer layer of the sleeve.
  • shrouds and nature of protective shrouds employed to protect an object may vary depending the object to be protectively packaged and user requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)
  • Cartons (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
  • Packages (AREA)

Abstract

A closed cell board including a core sandwiched between first and second liner sheets wherein the second liner sheet has a stronger construction than the first liner sheet, or vice versa.

Description

IMPROVEMENTS IN AND RELATING TO PACKAGING
STATEMENT OF CORRESPONDING APPLICATIONS
This application is based on 'the Provisional specification filed in relation to New Zealand Patent Application Number 588967, the entire contents of which are incorporated herein by reference.
TECHNICAL FIELD
The present invention relates to improvements in and relating to packaging. In particular improvements in and relating to protective edges and packaging systems making use of closed cell board including: shrouds, corner boards, u-boards, tube boards and sleeves.
DEFINITIONS
The term closed cell board as used herein refers to composite paper board which has at least one first liner sheet and at jeast one second liner sheet which respectively sandwich a core having a plurality of cells there between. Thus, closed cell board includes honeycomb paper board which has a honeycomb core, or X- board as is manufactured by Xanita of South Africa or 3C™ board as manufactured by Corcel. X- board and 3C™ board are composite boards comprising a core manufactured from adjacent strips of single or double face corrugated paperboard sandwiched between two liner sheets so that the flutes run vertically (i.e. the flute channels run from the top liner sheet to the bottom liner sheet of a horizontally oriented composite board). The term closed cell board also includes non-paper based products to which the present invention may also have application including corflute and foam core board which also have a core comprising a number of cells.
BACKGROUND ART
The present invention in one aspect is concerned with protective edges used to prevent damage to packaged freight on skids or pallets occurring whilst loading/unloading or during transport.
For ease of reference the present invention will now be described in relation to corner boards made from paper however this should not be seen as limiting.
Paper corner boards can be formed in a variety of different ways.
Typically paper corner boards are formed by a multi-step process which involves:
1 ) cutting a line through one liner sheet and the core to form a slit running along the central longitudinal axis of a strip of composite corrugated paperboard, such as 3C™ corrugated composite paperboard manufactured by Corcel, or such as X-Board manufactured by Xanita;
2) crushing a channel on either side of the slit or cutting v-shaped walls into the slit;
3) applying glue to the channel;
4) folding one or both opposed edges on either side of the score line toward the scored line so as to form a right angle between either side of the score line; and 5) holding the folded length of material in a position to maintain the right angle between the sides until the glue sets.
However, as can be seen this is a time consuming process involving many steps and requiring the use of adhesive (including hot melt glues) which is not only expensive but also toxic, thus requiring care in the manufacturing process.
Furthermore, corner boards manufactured by this process tend to splay outwardly when straps are tensioned to secure stacked packaging as a unit, causing the sides of the corner boards to move out of aligned contact with the sides of the packaging.
The slitting of closed cell board through a first facing sheet, core and stopping short of the second facing sheet is known in the art - see the corrupad angles page of www.multiwallpackaing.com where it details a reverse slit score / slit score product. The product shown resembles the present invention but it has a different use, as detailed in the following extract from the webpage:
Reverse Slit Score / Slit Score
A reverse slit score is made by cutting through one facing paper and through the core material, and then by cutting the opposite facing paper at another location to create a fan folding effect in the panel. A single slit score is produced by cutting through one facing paper and the entire core, leaving the other facing paper intact to create a folding hinge in the panel.
Thus, the use of this fan folding panel as a protective edge is not taught or contemplated by the aforementioned website.
A further problem in the packaging industry is the need to create inexpensive and effective replacements or alternatives to polystyrene packaging. In particular there is a need for packaging solutions which can be used for protecting fragile items which need to be transported and/or stored.
SUMMARY OF INVENTION
The present invention in one aspect provides a simplified and more effective manner of manufacture for producing protective edges, shrouds including u-shaped channels and sleeves, all made of closed cell board. The method of the present invention effectively shortcuts the current manufacturing process and reverses one step in a counterintuitive manner to create cheaper and more effective products such as edge protectors including corner boards and u-shaped channels.
The reversed step of the present invention effectively involves folding a pre-slitted board inside out so that the slit forms an outside corner.
This concept is perhaps most easily understood initially if described in relation to corner boards. The present invention utilises the reverse step of inside out folding so that the .slit is located on the outside corner of the corner board (not the protected inside corner such as occurs in a conventionally constructed corner board). The reversal of this one step surprisingly mitigates many of the other manufacturing steps employed to produce conventional paper corner boards.
Given edge protectors such as corner boards are used to protect the edges of boxes or the like, that are stacked on a pallet or skid, one would never intuitively think, to have what is the weakest point of a corner board (i.e. the slit), presented as the exposed exterior corner edge of the corner board. The fact the exposed slit has been found to possess the requisite strength required for a paper closed cell corner board to protect the packaging from the edges of the plastic strapping is thus a surprising result. The present invention also relates to a new form of closed cell board which has first and second liner sheet(s) on either side of the core wherein the relative thickness and/or strength of the first and second line sheets are different. For example, the first liner sheet may comprise a single sheet of paper board and the second liner sheet may be a laminate of two or more sheets of paper board.
The present invention additionally relates to blanks for creating protective edges and shrouds.
The present invention also relates to packaging systems capable of being used in place of polystyrene (EPS) packaging.
New Board
According to another aspect of the present invention there is provided a closed cell board including a core sandwiched between first and second liner sheets wherein the second liner sheet has a stronger construction than the first liner sheet, or vice versa.
Preferably, the closed cell board may be made of paper and may resemble 3C™ board manufactured by Corcel - www.corcel.com.
Method of manufacture protective edge
According to a first aspect of the present invention there is provided a method of manufacturing a protective edge from a sheet of closed cell composite board which has first and second liner sheets on either side of a core, the method comprises the step of: a) cutting a line through: the first liner sheet; and the core; of the closed cell board to form a slit that extends along, or is parallel to, a major axis of the board but wherein said slit does not penetrate the second liner sheet.
This produces a protective edge blank which is flat and takes up less room when stacked for transportation and storage purposes prior to use.
A method substantially as described above where the method comprises the further step of: b) folding the closed cell board along the slit to create first and second sides angled with respect to one another with the slit forming an external corner of the protective edge.
Preferably the protective edge may be in the form of a corner board.
Method of manufacturing a protective shroud or blank therefor
The present invention also provides an inexpensive way of producing a protective shroud which may: be in the form of a sleeve or u-shaped channel; or a sheet of material which has at least one edge in the form of a u-shaped channel or a sleeve, and which can be used individually, or combination, to protect an object, or part thereof, covered by the shroud. According to an aspect of the present invention there is provided a method of manufacturing a protective shroud from a sheet or strip of closed cell board which has first and second liner sheets on either side of a core the method comprises the step of: a) cutting at least two parallel lines through the first liner sheet and core of the closed cell board to form slits that are parallel to one common axis of the board but wherein said slits do not penetrate the second liner sheet.
This produces a shroud blank which is flat and takes up less room when stacked for transportation and storage purposes prior to use.
A method substantially as described above wherein the method comprises the further step of: b) folding the closed cell board along each slit to create three or more sides angled with respect to one another with the slits forming an external corner or corners of the protective shroud.
The protective shroud may preferably be a sleeve, or a u- shaped channel, but can include a sheet of planar material which has one or more edges, which have been manipulated as per the method above to form a u-shape channel, or a sleeve, along the edge(s) of the otherwise planar sheet.
A protective shroud and blank therefor
The present invention also provides a protective shroud which: - may be in the form of a sleeve or u-shaped channel; or - may be in the form of a sheet of material which has at least one edge including a u-shaped channel or a sleeve, and which can be used individually, or combination, to protect an object, or part thereof, covered by the shroud. Pre-formed blanks for creating protective shrouds are also covered by the present invention.
Shroud blank
According to a further aspect of the present invention there is provided a protective shroud blank made from a sheet or strip of closed cell board which includes a first and second liner sheets on either side of a core and wherein the sheet or strip of closed cell board includes:' two parallel slits for subsequently creating a u-shaped channel; or three or more parallel slits for subsequently creating a sleeve; and wherein the slits are cut through the first liner sheet and core of the closed cell board and wherein said slits do not penetrate the second liner sheet.
Sheet-like shroud blank
According to a further aspect of the present invention there is provided a protective shroud blank made from a sheet of closed cell board which includes a planar surface and first and second liner sheets on either side of a core and wherein formed along at least one edge of the planar surface are: two parallel slits for subsequently creating a u-shaped channel; or three or four parallel slits for subsequently creating a sleeve; wherein the slits are cut through the first liner sheet and core of the closed cell board wherein said slits are parallel to said edge and wherein said slits do not penetrate the second liner sheet.
Shroud
According to a further aspect of the present invention there is provided a protective shroud made from a sheet or strip of closed cell board which includes a first and second liner sheets on either side of a core and wherein the sheet or strip of closed cell board includes: two parallel slits for subsequently creating a u-shaped channel; or three or more parallel slits for subsequently creating a sleeve; and wherein the slits are cut through the first liner sheet and core of the closed cell board and wherein said slits do not penetrate the second liner sheet and wherein said u-shaped channel(s) and/or said sleeve(s) have outside corner edges in the form of splits formed by folding along the parallel slits cut through the first liner sheet and core of the closed cell board.
Sheet- like shroud
According to a further aspect of the present invention there is provided a protective shroud made from a sheet of closed cell board which includes a planar surface and first and second liner sheets on either side of a core and wherein formed along at least one edge of the planar surface is/are: at least one u-shaped channel formed from two parallel slits; and/or at least one sleeve formed from three or more parallel slits; wherein the slits are cut through the first liner sheet and core of the closed cell board wherein said slits are parallel to said edge and wherein said slits do not penetrate the second liner sheet and wherein said u-shaped channel(s) and/or said sleeve(s) have outside corner edges in the form of splits formed by folding along the parallel slits cut through the first liner sheet and core of the closed cell board.
Use of/Method of use
According to a still further aspect of the present invention there is provided the use of a protective edge or protective shroud made from a sheet of closed cell board substantially as described above to protect an object or an edge of an object.
According to another aspect of the present invention there is provided a method of protecting an object or an edge of an object comprising the step of placing a protective edge or shroud made frgm a sheet of closed cell board substantially as described above around the object or edge of the object to be protected.
Container
The principles of the present invention may also be employed in the manufacture of a container.
According to another aspect of the present invention there is provided a closed cell board container which comprises:
• at least one sleeve forming a body portion; and
• at least one u-shaped channel forming a base; of the container, wherein said sleeve and said u-shaped channel are formed via parallel lines cut through the first liner sheet and core of the closed cell board to form slits that are parallel to one common axis of the closed cell board and wherein said slits do not penetrate the second liner sheet, and wherein said u-shaped channel(s) and/or sleeve(s) have outside corner edges in the form of splits formed by folding along parallel slits cut through the first liner sheet and core of the closed cell board wherein said slits do not penetrate the second liner sheet.
Preferably, the container above may include a further u-shaped channel which acts as a lid.
Protective Packaging System
The present invention also provides an inexpensive alternative yet effective protective packaging system for say protecting an object such as, for instance, a flat screen TV or computer which can replace polystyrene.
According to a further aspect of the present invention there is provided a protective packaging system wherein the system includes: at least one protective shroud substantially as described above which, in use, can protect at least an edge or side and one surface of an object.
A protective packaging system substantially as described above wherein the protective shroud has at least planar surface and at least one edge formed as a u- shaped channel or a sleeve.
BRIEF DESCRIPTION OF THE DRAWINGS shows a protective edge in the form of a corner board in accordance with one preferred embodiment of the present invention; shows a cross sectional view of a length of closed cell board which has been cut to form a slit ready for folding into the corner board of Figure 1 ; shows a cross sectional view of a length of closed cell board according to one preferred embodiment of the present invention which has a stronger liner sheet on one side of the core and which has been cut to form a slit ready for folding into the corner board resembling that of Figure 1 ; shows a corner board of the present invention protecting the edges of packaged product sitting on a pallet; shows a transverse cross sectional view through the corner board of Figure 1 ; shows a protective edge in the form of a u-shaped channel in accordance with a further preferred embodiment of the present invention; shows a front view box made from protective edges as shown in Figure 6 and from shrouds in the form of sleeves; shows a perspective view of a portion of a shroud in the form of a sleeve in accordance with one preferred embodiment of the present invention; shows a cross sectional view along line A-A of a sheet-like shroud for a packaging system in accordance with one preferred
embodiment of the present invention, as depicted in Figure 10; Figure 10 - shows a bottom plan view of the sheet-like shroud in Figure 9, looking from direction indicated by arrow B;
Figure 11 - Figure 1 1 shows a protective shroud in the form of an elongated u- shaped channel which is used to complete the packaging system of Figures 9 and 10 as is shown in Figure 12, for a packaging system in accordance with one preferred embodiment of the present invention;
Figure 12 - shows a cross sectional view of the packaging system of Figure 9 protecting a flat panel TV, taken along line A-A of the shroud in Figure 10 and illustrating how u-shaped channel of Figure 1 1 protects the reverse side of the TV;
Figure 13 - shows a schematic cross sectional view of a protective shroud in the form of a double corner board arrangement in accordance with one preferred embodiment of the present invention;
Figure 14 - shows a schematic cross sectional view of a protective shroud in the form of a sleeve wherein the sleeve has multi-ply walls formed from a single sheet of 3CT!UI board manufactured by Corcel;
Figure 15 - shows a schematic cross sectional view of a sheet of Corcel 3C™ board which has been cut into a blank for the multi-ply walled sleeve of Figure 13; and
Figure 16 - shows a schematic view of protective packaging system for a TV in accordance with a further preferred embodiment of the present invention. Best Modes and Illustrative Examples
With respect to Figure 1 there is provided a protective edge in the form of a corner board generally indicated by arrow 100. The corner board 100 has a first side 1 and a second side 2 which exist on either side of a longitudinal split 3. As can be seen the split 3 forms an outside edge of the corner where the first and second sides 1 , 2 adjoin one another.
As shown in Figure 2 the first side 1 and second side 2 are created after a strip 90 of closed cell board, in the form of Corcel 3C™ paper board, has a line cut along a first liner sheet 1000 and through the core 3000 just shy of penetrating the second facing sheet 2000, to form a slit 300. The slit 300 is preferably formed by a cutting device such as a rotating blade which travels along the central longitudinal axis of the strip 90. Once the slit 300 has been formed the strip 90 is folded so as to open slit 300 to form split 3 and a substantially 90 degree angle between the first side 1 and second side 2 to form a corner board 100 as shown in Figure 1.
In Figure 3 the strip 90 is formed from closed cell board which has first liner sheet 1000 a core 3000 and second liner sheet 2000 in the form of a laminate made from two sheets of Kraft paper 2001 and 2002 which are bonded together with an EVA glue.
In use the corner board 100 is placed along the edges of a stack of packaged goods 200 on a pallet 300 (not shown) refer Figure 4. The corner boards 100 are held onto the edges of the stack 200 by plastic polypropylene strapping 400. As can be seen upon tensioning, the strapping 400 crushes the opposing top edges 1 a and 2a and core walls 1 b and 2b which move towards one another to protect second facing sheet 6. Figure 5 shows a cross sectional view through the corner board 100 of Figure 1 and Figures 4a and 4b, and illustrates in greater detail slit 3 and as can be seen the core walls 1 b and 2b converge towards second liner sheet 2000 which help lessen the likelihood of anything other than narrow objects being able to contact the second liner sheet 2000. Most of the impact damage to corner boards protecting a load stacked on a pallet, occurs during transport load/unloading through contact with surfaces rather than sharp edges. Thus the crushing of the walls 1 b and 2b absorb most of the impact allowing the corner boards of the present invention to provide effective shields.
In some further preferred embodiments two or more overlaid corner boards may be employed should additional protection be required. Given the cost savings achieved with the manufacture of the corner boards of the present invention over conventional "glued corner boards" discussed in the Background section above, the overlay solution is very cost competitive.
In Figure 6 there is shown a shroud in the form of a U-shaped channel 1000 which has two opposed side walls 1001 and 002 which are joined by a base 1003. The walls 1001 and 1002 were originally in the same plane as the base 1003 but after splits 1001a and 1002a were formed through first liner sheet 1004 and core 1005, the side walls 1001 and 1002 were folded substantially at right angles to the plane of base 1003 to form the channel.
In Figure 7 there is shown a box 2000 which has a body 2001 formed from sleeves 2002a and 2002b which are similar to those shown in Figure 8. The box 2000 also has a lid 2003 and a base 2004. The lid 2003 and base 2004 are in the form of U- shaped channels as discussed above in relation to Figure 6. in figure 8 there is shown a sleeve 8000 which has 4 walls 8001 - 8004 formed in a manner substantially similar to that described for the u-shaped channel in Figure 6.
In Figure 9 there is shown a cross sectional view along line A-A of a protective "sheet-like shroud 9000 (shown in Figure 10) which is made from a sheet of closed cell board, in the form of Corcel 3C™ paper board. The shroud 9000 has a planar . section 9001 and is bounded by edges in the form of sleeves 9002. The sleeves
9002 have splits 9003 forming the external corners of the sleeve. A flat panel TV can sit within the boundaries formed by sleeves 9002, see also Figure 12.
Figure 10 shows part of a protective packaging system for protecting a flat panel TV. The protective packaging system has a first protective component 9000 made from a shroud as shown in Figure 9 which protects the front screen, top, side and bottom edges of the TV. The back of the TV is protected by a second protective component in the form of an elongated U-shaped channel 10002 having a planar base 10003 and two sides 10004 which extend from the base 9003 shown in Figure 1 1. The sides 10004 of the U-shaped channel 10002 slot in between the sides of the TV (not shown) and sleeves 9002 (depicted with dotted lines in Figure 10) of first protective component 9000 as shown in Figure 12.
In Figure 13 there is shown a double cornerboard arrangement 1200 which has an inner cornerboard 1201 and outer cornerboard 1202. The cornerboards are the same as shown and discussed in relation to Figure 1. The inner and outer cornerboards are glued to one another.
In Figure 14 there is shown a multi-ply walled sleeve 1300 which is formed from a single sheet (blank) 1301 (shown in Figure 15). The sleeve 1300 has outer corners in the form of splits 1302 formed when slits 1303 in the blank 1301 are folded to form the sleeve. The blank 1301 has been formed by cutting slits 1303 through the first liner sheet 1304 and core 1305. The slits 1303 do not penetrate second liner sheet 1306. The corresponding wall segments in the sleeve 1300 and blank 1301 are shown as letters A-H.
An alternative TV protective packaging system 1600 is shown in Figure 16. The system consists of two sheet liner shrouds 1601 and 1602.
The protective packaging systems of Figure 9-12 and 16 are envisaged to be inserts which slide into a box as replacement for polystyrene.
Detailed Discussion of Ways to Implement the Invention
New Board
In preferred embodiments the second liner sheet may be in the form of a laminate of two or more sheets of paper and the first liner sheet may be a single sheet of paper.
In some other embodiments the second liner sheet may be in the form of a sheet of paper which has greater strength/thickness than that of the first liner sheet.
Method of manufacture protective edge and/or sleeve or U-shaped channel
Preferably, the closed cell board may be 3C™ board as manufactured by Corcel.
In other preferred embodiments the closed cell composite board may be X-board or honeycomb paper board.
However, other closed cell boards such as corflute and foam core board can also be used. The outline of the closed cell board may vary depending on user requirements. Generally the outline will be square or rectangular, for instance, the closed cell board may be in the form of a square sheet of material or in the form of a strip of material.
The cutting operation for forming the slit may be achieved via a blade cutter which has the blade set to have a penetration depth which will cut through the first liner sheet and core but will not penetrate the second liner sheet of the closed cell board.
In preferred embodiments the major axis along which the slits are cut may be the longitudinal axis or lateral axis.
In some other preferred embodiments for other applications the major axis may be a diagonal or other angled axis.
Use of/Method of use
In preferred embodiments the protective edge may be in the form of a corner board which has a single slit forming the external corner thereof. The two sides of the comer board on either side of the slit may be folded to have any angle from substantially 1 - 180 degrees with respect to one another as required to protect an object or edge of an object. For example, if the corner board is to protect a planar sheet as thin as a piece of paper the two sides may be folded substantially 180 degrees with respect to one another. Whereas, if for example, the corner board is to protect a large multi-sided object the two sides may be folded so that there is an angle of substantially 1 degree there between.
In general the two sides may be folded so as to have a substantially 90 degree angle there between so as to protect the edge of a box or group of stacked boxes. Container
Preferably the container may include a further sleeve which acts as a lid.
In one embodiment the container may comprise two u-shaped channels configured such that the walls of one u-shaped channel overlap at least portion of the corresponding side walls of the other u-shaped channel. The overlap between the walls providing a region of increased strength.
Any number of sleeves and u-shaped members may be used in forming the container depending on user requirements.
In some applications the container may be used inside a decorative box to provide protective packaging in a similar vein to polystyrene.
A protective shroud
The shroud may in some preferred embodiments be a u-shaped channel which has folded corners formed from two spaced apart slits.
In other preferred embodiments the shroud may be a sleeve formed from at least three spaced apart slits. In general the sleeve may be a tube-like member which has a rectangular or other shaped transverse cross sectional profile. The cross sectional shape being dictated by the number of slits and folds.
In some embodiments the shroud may comprise two or more u-shaped channels which are effectively overlaid over one another to provide increased strength. Similarly the shroud may comprise two or more sleeves which fit inside/around an adjacent sleeve. Alternatively, the shroud may be a multi-ply walled sleeve formed by folding along a plurality of cuts which are spaced apart a distance so as to from walls which increase in size for each outer layer of the sleeve.
SHEET-LIKE
Protective Packaging System
It is envisaged the type of shrouds and nature of protective shrouds employed to protect an object may vary depending the object to be protectively packaged and user requirements.
Aspects of the present invention have been described by way of example only and it should be appreciated that modifications and additions may be made thereto without departing from the scope of the appended claims.

Claims

WHAT WE CLAIM IS:
A closed cell board including a core sandwiched between first and second liner sheets wherein the second liner sheet has a stronger construction than the first liner sheet, or vice versa.
A method of manufacturing a protective edge from a sheet of closed cell composite board which has first and second liner sheets on either side of a core, the method comprises the step of: a) cutting a line through:
- the first liner sheet; and
- the core; of the closed cell board to form a slit that extends along, or is parallel to, a major axis of the board but wherein said slit does not penetrate the second liner sheet.
A method as claimed in claim 2 wherein the method comprises the further step of: b) folding the closed cell board along the slit to create first and second sides angled with respect to one another with the slit forming an external corner of the protective edge.
A method of manufacturing a protective shroud from a sheet or strip of closed cell board which has first and second liner sheets on either side of a core the method comprises the step of: a) cutting at least two parallel lines through the first liner sheet and core of the closed cell board to form slits that are parallel to one common axis but wherein said slits do not penetrate the second liner sheet.
A method substantially as described above wherein the method comprises the further step of: b) folding the closed cell board along each slit to create three or more sides angled with respect to one another with the slits forming an external corner or corners of the protective shroud.
A protective shroud blank made from a sheet or strip of closed cell board which includes a first and second liner sheets on either side of a core and wherein the sheet or strip of closed cell board includes: two parallel slits for subsequently creating a u-shaped channel; or three or more parallel slits for subsequently creating a sleeve; and wherein the slits are cut through the first liner sheet and core of the closed cell board and wherein said slits do not penetrate the second liner sheet.
A protective shroud blank made from a sheet of closed cell board which includes a planar surface and first and second liner sheets on either side of a core and wherein formed along at least one edge of the planar surface are: two parallel slits for subsequently creating a u-shaped channel; or three or four parallel slits for subsequently creating a sleeve; wherein the slits are cut through the first liner sheet and core of the closed cell board wherein said slits are parallel to said edge and wherein said slits do not penetrate the second liner sheet.
A protective shroud made from a sheet or strip of closed cell board which includes a first and second liner sheets on either side of a core and wherein the sheet or strip of closed cell board includes: two parallel slits for subsequently creating a u-shaped channel; or three or more parallel slits for subsequently creating a sleeve; and wherein the slits are cut through the first liner sheet and core of the closed cell board and wherein said slits do not penetrate the second liner sheet and wherein said u-shaped channel(s) and/or said sleeve(s) have outside corner edges in the form of splits formed by folding along the parallel slits cut ' ■■ through the first liner sheet and core of the closed cell board.
A protective shroud made from a sheet of closed cell board which includes a planar surface and first and second liner sheets on either side of a core and wherein formed along at least one edge of the planar surface is/are: at least one u-shaped channel formed from two parallel slits; and/or at least one sleeve formed from three or more parallel slits; wherein the slits are cut through the first liner sheet and core of the closed cell board wherein said slits are parallel to said edge and wherein said slits do not penetrate the second liner sheet and wherein said u-shaped channel(s) and/or said sleeve(s) have outside corner edges in the form of splits formed by folding along the parallel slits cut through the first liner sheet and core of the closed cell board.
10. The use of a protective edge or protective shroud made from a sheet of
closed cell board as claimed in claim 8 or claim 9 to protect an object or an edge of an object.
1 1 . A closed cell board container which comprises: at least one sleeve forming a body portion; and at least one u-shaped channel forming a base; of the container, wherein said sleeve and said u-shaped channel are formed via parallel lines cut through the first liner sheet and core of the closed cell board to form slits that are parallel to one common axis of the closed cell board and wherein said slits do not penetrate the second liner sheet, and wherein said u-shaped channel(s) and/or sleeve(s) have outside corner edges in the form of splits formed by folding along parallel slits cut through the first liner sheet and core of the closed cell board wherein said slits do not penetrate the second liner sheet.
12. A protective packaging system wherein the system includes: at least one protective shroud as claimed in any one of claims 6 - 9 which, in use, can protect at least an edge or side and one surface of an object.
13. A protective packaging system substantially as claimed in claim 12 wherein the protective shroud has at least planar surface and at least one edge formed as a u-shaped channel or a sleeve.
EP11838297.7A 2010-11-02 2011-11-01 Improvements in and relating to packaging Withdrawn EP2635499A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ588967A NZ588967A (en) 2010-11-02 2010-11-02 A protective shroud made from a sheet of closed cell board with at least one u-shaped channel
PCT/NZ2011/000231 WO2012060721A1 (en) 2010-11-02 2011-11-01 Improvements in and relating to packaging

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EP2635499A1 true EP2635499A1 (en) 2013-09-11

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EP (1) EP2635499A1 (en)
JP (1) JP2013541476A (en)
KR (1) KR20130132463A (en)
CN (1) CN103313915A (en)
BR (1) BR112013010837A2 (en)
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WO (1) WO2012060721A1 (en)

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JP2013541476A (en) 2013-11-14
CN103313915A (en) 2013-09-18
NZ588967A (en) 2013-05-31
NZ611368A (en) 2014-12-24
BR112013010837A2 (en) 2016-08-16
KR20130132463A (en) 2013-12-04
US20130277418A1 (en) 2013-10-24
WO2012060721A1 (en) 2012-05-10

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