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
  • 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
  • B65D5/02—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 by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
  • B65D5/06—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 by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
  • B65D5/061—Rectangular containers having a body with gusset-flaps folded inwardly beneath the closure flaps

Definitions

• the present invention relates to a carton having an elevated bottom. Specifically, the present invention relates to a carton having the edge portions of the bottom elevated to protect the raw paperboard edges from damage and absorption of moisture.
• the raw paper edges are a by-product of the composition of the carton blank.
• the carton blank is cut and scored from a sheet of coated fiberboard material.
• the coated fiberboard material is usually composed of three layers, and may have a barrier layer juxtaposed between fiberboard layers.
• the exposed surfaces of this sheet are coated with a polymer material such as polyethylene.
• the coating does not extend to the edges which are thus left uncoated, and partially unprotected at least to moisture and sensitive to damage.
• these raw paper edges are most prevalent at the bottom of the carton. If moisture is absorbed into the raw paper edges, the water may be absorbed throughout the fiberboard interior layer, which due to its cellulose-like nature, has a strong affinity for liquids. This absorption of moisture may compromise the integrity of the carton thereby rendering it defective.
• Base Laminate similarly discloses a carton having an inverted V-shaped bottom to provide greater stability to the carton.
• the raw paper edge of panel 27 is not inverted and is susceptible to moisture absorption since the V-shaped inversion begins at the raw paper edge and since the inversion must be centered to provide stability to the carton.
• the present invention resolves the problem of absorption of moisture through raw paper edges by providing a carton having the raw paper edges elevated in order to protect the raw paperboard edges and reduce the susceptibility of moisture absorption.
• the present invention is able to accomplish this without adversely affecting the carton.
• One aspect of the present invention is a carton having bottom panels sealed together to form a sealed bottom with the edge of one bottom panel exposed wherein a region surrounding the edge is elevated to prevent moisture absorption.
• Another aspect of the present invention is a carton having bottom panels sealed together to form a sealed bottom with a plurality of raw paper edges exposed wherein all of the raw paper edges are elevated to prevent moisture absorption. It is a primary object of the present invention to provide a carton having elevated raw paper edges on the bottom of the carton to prevent moisture absorption.
• FIG. 1 a perspective view of one embodiment of a carton of the present invention.
• FIG. 5 bottom perspective view of a preferred embodiment of a carton of the present invention.
• FIG. 6 There is illustrated in FIG. 6 a perspective view of another embodiment of a carton of the present invention.
• FIG. 7 a plan view of a blank for the carton of FIG. 6.
• FIG. 8 bottom perspective view of one embodiment of a carton of the present invention.
• FIG. 9 bottom perspective view of another embodiment of a carton of the present invention.
• FIG. 1 a carton 10 embodying the present invention.
• the carton 10 has a plurality of side panels 12a and 12b, a top panel 14, a top fin 16, bottom score lines 18a and 18b defining the bottom from the side panels 12a and 12b, and an elevated portion 20.
• the side panel 12b is actually folded over and sealed to a sealing panel 22.
• the folding and sealing of the carton creates a raw paper edge which extends from the top 16 to the bottom of the carton 10 along this intersection of the sealing panel 22 and side panel 12b, top panel 14, top fin 16 and the bottom panel corresponding to side panel 12b.
• FIG. 3 shows an embodiment of the present invention.
• the bottom of the carton 10 has the elevated portion 20 bounded by substantially planar portions 60 and 62.
• the planar portions 60 and 62 are substantially perpendicular to side panels 12a. 12b and 12c and 12d, not shown.
• the planar portions 60 and 62 contact the conveyor belt 54 while elevated portion 20 is elevated above the belt 54 and any moisture thereon. The same applies during distribution whether in a crate or a shelf at a store.
• the elevated portion 20 is further defined by angled portions 64 and 66 and elevated planar portion 70.
• the elevated planar portion 70 is further defined as elevated planar portion 70a and elevated planar portion 70b.
• the elevated planar portion 70a substantially includes a portion of panel 32b while elevated planar portion 70b includes a portion of panel 32d.
• the exposed raw paper edge 40a traverses the bottom of the carton 10, extending from the end of panel 12 a to the end of panel 12c, not shown.
• the elevated portion 20 traverses the bottom of the carton 10.
• elevated portion 20 is centered on the bottom of the carton 10 with planar portions 60 and 62 being equal in area to each other.
• FIG. 4 shows an alternate embodiment of the present invention.
• FIG. 4 is similar to FIG. 3 except that all exposed raw paper edges 40a and 40b are elevated.
• the exposed edge 40b is substantially perpendicular to exposed edge 40a.
• a second elevated portion 20a elevates this exposed edge 40b thereby preventing moisture absorption as with exposed edge 40a.
• the second elevated portion 20a has an angled portion 70 that engages planar portion 60, side panel 12a, and angled portion 64.
• the exposed raw edges may be elevated in a similar fashion without departing from the scope and content of the present invention.
• the secondary elevated portion 100 prevents loss of elevation in the center of the bottom of the carton 10 during transportation from a packaging machine to the retailer/wholesaler to the consumer.
• the center of the bottom of the carton 10 is most susceptible to deelevation from the weight of the product.
• the weight of the product in the carton 10 is focused on the center of the bottom of the carton 10, and thus it is necessary to provide greater elevation in this area. This greater elevation is provided by the secondary elevated portion 100 which compensates for gravitational forces exerted by the product on the center of the bottom of the carton 10.
• the secondary elevated portion 100 is triangular in shape with its apex 101 near the exact center of the bottom of the carton 10.
• the secondary elevated portion 100 is substantially contained within elevated planar portions 70a and 70b.
• the triangular shaped embodiment of the secondary elevated portion 100 may be rotated any degree from 1-360 degrees, about apex 101 while not departing from the scope and spirit of the present invention.
• the secondary elevated portion 100 may lie entirely within elevated planar portion 70a.
• the secondary elevated portion 100 is partially defined by secondary angled portions 102, 104, 106 and 108.
• the secondary angled portions 102 and 104 form a transition from the secondary elevated portion 100 to elevated planar portion 70a whereas the secondary angled portions 106 and 108 form a transition from the secondary elevated portion 100 to elevated planar portion 70b.
• the bottom of the carton 10 is usually formed on a mandrel of a form, fill and seal packaging machine, not shown.
• the carton blanks 30 are fed from a magazine, not shown, to a bottom forming station of the machine, not shown. During the transfer from magazine to bottom forming station, the carton blank is erected. On the bottom forming station, the bottom panels are pretreated if necessary, and then heat-sealed together to form the bottom. This is accomplished by pressing against the bottom panels as they lie on the mandrel. In order to achieve the elevated bottom of the present invention, one may have a special press and mandrel that allows for the elevated bottom of the present invention. There is illustrated in FIG. 6 a carton 210 another embodiment of the present invention.
• the carton 210 has a plurality of side panels 212a and 212b, a top panel 214, a top fin 216, bottom score lines 218a and 218b defining the bottom from the side panels 212a and 212b, and an elevated portion 220.
• a sealing panel 222 partially shown in FIG. 6, is connected to the side panel 212a and is folded over and sealed to the side panel 212b, not shown. The folding and sealing of the carton creates a raw paperboard edge which extends from the top 216 to the bottom of the carton 210 along this intersection of the sealing panel 222 and side panel 212b, top panel 214, top fin 216 and the bottom panel corresponding to side panel 212d.
• FIG. 7 illustrates a blank 23 O of the carton 210 of FIG. 6.
• the side panels 212a and 212b The side panels
• FIG. 8 shows another embodiment of the elevated bottom of the present invention.
• the bottom of the carton 210 has the elevated portion 220 bounded by substantially planar portions 260 and 262.
• the planar portions 260 and 262 are substantially perpendicular to side panels 212a, 212b and 212c and 212d, not shown.
• planar portions 260 and 262 contact a surface such as a conveyor belt on a packaging machine while the elevated portion 220 is elevated above the surface and any moisture thereon. The same applies during distribution of the carton whether in a crate or on a shelf at a store.
• FIG. 9 Another embodiment of the elevated bottom of the carton of the present invention is shown in FIG. 9.
• the carton 210 of FIG. 9 is similar to the carton 210 of FIG. 8 except that approximately in the center of the elevated portion 220 are secondary elevated portions 300 and 301.
• the secondary elevated portions 300 and 301 prevent loss of elevation in the center of the bottom of the carton 210 during transportation from a packaging machine to the retailer/wholesaler to the consumer.
• the center of the bottom of the carton 210 is most susceptible to deelevation from the weight of the product.
• the weight of the product in the carton 210 is focused on the center of the bottom of the carton 210. and thus it is necessary to provide greater elevation in this area. This greater elevation is provided by the secondary elevated portions 300 and 301 which compensate for gravitational forces exerted by the product on the center of the bottom of the carton 210.
• the secondary elevated portions 300 and 301 are triangular in shape with apices 302a-b facing the center of the bottom of the carton 210.
• the secondary elevated portions 300 and 301 are substantially contained within elevated planar portions 270a and 270b.
• the triangular shaped embodiment of the secondary elevated portions 300 and 301 may be rotated any degree from 1-360 degrees, about apices 302a-b while not departing from the scope and spirit of the present invention.
• the secondary elevated portions 300 and 301 may lie entirely within elevated planar portion 270b and 270a, respectively.
• the secondary elevated portions 300 and 301 are partially defined by secondary angled portions 304a-d.
• the secondary angled portions 304a-d form a transition from the secondary elevated portions 300 and 301 to the elevated planar portions 270b and 270a.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cartons (AREA)
• Diaphragms For Electromechanical Transducers (AREA)
• Table Devices Or Equipment (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Packages (AREA)
• Packaging Frangible Articles (AREA)

Priority Applications (9)

Applications Claiming Priority (6)

Publications (1)

Family

ID=27368126

Family Applications (1)

Country Status (11)

Citations (6)

• 1998
  • 1998-10-19 EP EP98953694A patent/EP0999983B1/en not_active Expired - Lifetime
  • 1998-10-19 WO PCT/US1998/022029 patent/WO1999020536A1/en active IP Right Grant
  • 1998-10-19 ES ES98953694T patent/ES2241174T3/es not_active Expired - Lifetime
  • 1998-10-19 AU AU11009/99A patent/AU1100999A/en not_active Abandoned
  • 1998-10-19 CA CA002308583A patent/CA2308583C/en not_active Expired - Fee Related
  • 1998-10-19 DK DK98953694T patent/DK0999983T3/da active
  • 1998-10-19 AT AT98953694T patent/ATE296231T1/de active
  • 1998-10-19 DE DE69830316T patent/DE69830316T2/de not_active Expired - Lifetime
  • 1998-10-19 BR BR9814089-2A patent/BR9814089A/pt not_active IP Right Cessation
  • 1998-10-19 JP JP2000516890A patent/JP4225687B2/ja not_active Expired - Fee Related
• 2000
  • 2000-04-14 NO NO20001968A patent/NO325838B1/no not_active IP Right Cessation

Patent Citations (7)

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