WO2003080453A1 - Folder container and method - Google Patents

Folder container and method Download PDF

Info

Publication number
WO2003080453A1
WO2003080453A1 PCT/US2003/008331 US0308331W WO03080453A1 WO 2003080453 A1 WO2003080453 A1 WO 2003080453A1 US 0308331 W US0308331 W US 0308331W WO 03080453 A1 WO03080453 A1 WO 03080453A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
panels
gusset
panel
secured
Prior art date
Application number
PCT/US2003/008331
Other languages
French (fr)
Inventor
Rune K. Haraldsson
Original Assignee
Meadwestvaco Corporation
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 Meadwestvaco Corporation filed Critical Meadwestvaco Corporation
Priority to AU2003225853A priority Critical patent/AU2003225853A1/en
Publication of WO2003080453A1 publication Critical patent/WO2003080453A1/en

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
    • 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
    • B65D5/20—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/24—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds
    • B65D5/244—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and the gussets folds connected to the outside of the container body
    • B65D5/246—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and the gussets folds connected to the outside of the container body the container body comprising a continuous rim or flange

Definitions

  • This invention relates to a container having a bottom panel for supporting container content, side panels for at least partially surrounding the content, and an access opening intended for the insertion or removal of content.
  • U.S. Patent 5, 873, 220 ('220) issued to Rune Haraldsson, et al entitled "Method for Producing a Self-Locking, Paperboard Pail-Like Container and Product Thereof describes a method for forming a container from a blank without the use of adhesives taught in the De May patent.
  • the Haraldsson patent teaches a container blank with a bottom panel, side panels, and gusset panels. One side of the blank is coated with a polymeric material. The other side of the blank is coated with a particulate mineral. At least some portion of the particulate mineral layer is “masked” in the sealing area. In addition, at least some portion of the gusset panels is "cutaway" in the sealing area.
  • the gusset panels are folded so that the gusset panels are partially overlapped and sealed to each other in the "masked” and “cut-away” area without the use of adhesives.
  • the "masking" and “cut-away” steps adds to the container's costs.
  • a container blank is formed with a plurality of side panels secured to a bottom panel. Adjacent side panels are further secured to each other by gusset panels.
  • the gusset panels include a first region and second region formed along a substantially central fold line. The first region has an exposed area when folded over the second region.
  • the gusset panels extend substantially along the length of the side panels.
  • a polymeric material is secured to one-side of the blank. The gusset panels are dimension so that when the container blank is folded at least some portion of polymeric material on the first region and second region of the gusset panels are secured to each other. Then opposing gusset panels are folded so that at least some exposed area of two opposing gusset panels are in contact with each other.
  • Figure 1 is a plan view of an exemplary container blank according to the invention.
  • Figure 2 is an end elevation view of a partially formed container.
  • Figure 3 is an end elevation view after a gusset panel is partially folded.
  • Figure 4 is an end view of a formed container.
  • Figure 5 is a side view of a formed container.
  • Figure 6 is a top view of a formed container.
  • Figure 1 illustrates an exemplary container blank 100 according to the invention.
  • Figures 2-6 illustrate how the blank 100 is folded and various parts secured to each other to form a container 400 ( Figures 4-6).
  • Blank 100 can be formed from any suitable substrate, such as paperboard, and of any suitable thickness. An exemplary thickness is about 0.008 to 0.028 inches.
  • Blank 100 is exemplary coated on one side with a mineral coating. In an exemplary method, the exterior side is coated with a fluidized mixture of minerals, such as clay and calcium, and binders to form a smooth surface. The surface may undergo additional mechanical smoothing treatments.
  • graphic and advertising information is printed on the exterior side of a formed container 400 ( Figures 4-6).
  • the other side of blank 100 is exemplary coated with a polymeric material, such as an extruded polymeric material.
  • a polymeric material such as an extruded polymeric material.
  • the polymeric material is heated to a viscous flow temperature and extruded as a curtain onto the surface of the substrate.
  • Typical coat weights are about 5 to about 20 pounds of extruded material per ream (3,000 ft. ) of substrate surface.
  • Exemplary polymeric materials include polyethylene, polyethylene terephthalate (PET), and polypropylene.
  • PET polyethylene terephthalate
  • the blank could also be coated with an aqueous emulsion coating, such as for example Styrene Acrylate or Ethele Vinyl Choloride.
  • the polymeric material makes the container substantially moisture proof and allows various parts of the blank 100 to be heat sealed to each other as described below.
  • Exemplary blank 100 is illustrated with a bottom panel 4, side panels 6, 8, 10, and 12, gussets panels 14, 16, 18, 20, 22, 24, 26, 28.
  • Optional flange panels 30 are also illustrated secured to the side panels 6, 8, 10, 12.
  • Blank 100 may be made using any conventional blank forming techniques.
  • Gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are illustrated with exemplary central fold lines 15, 19, 23, 27.
  • the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are secured to the side panels 6, 8, 10, 12 along exemplary fold lines 81-88.
  • the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are illustrated with exemplary exterior perimeters 41-45, 51-55, 60-65, and 70-75.
  • the perimeters are formed using conventional techniques.
  • the exterior perimeters 41-45, 51-55, 60- 65, and 70-75 allow gussets panels 14, 16, 18, 20, 22, 24, 26, 28 to be contacted with each other along central axis fold line 15, 19, 23, 27 as illustrated in Figure 2. It is to be understood that blank 100 and its various parts can be dimensioned and shaped into many container configurations and that the scope of the invention is not limited to the exemplary container and shape shown in the exemplary Figures.
  • the blank 100 is inserted in a container forming apparatus (not shown).
  • the polymeric material is heated (not shown), for example with hot air.
  • a container platen (not shown) contacts (not shown) the blank 100 and forces the blank 100 into a container die (not shown).
  • the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are pressed together, for example, using spring loaded rollers, so that the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are secured to each other by the "heated" polymeric material. It is also possible to combine heating and pressure after folding the blank 100 using for example ultrasonic welding or heated sealing plates.
  • FIG. 2 illustrates an end view of a partially formed container 200. Side panel 8 and gusset panels 16, 18 are visible. Also illustrated is an exposed area of gusset panel 20 surrounded by perimeter 61, 62, 64, 65.
  • Figure 3 illustrates the container 300 after gusset panels 14, 16 of Figure 2 are folded toward side panel 8.
  • the exposed polymeric material region of gusset panel 16 with perimeter, 41, 42, 44, 45 and gusset panel 20 with perimeter 61, 62, 64, 65 are illustrated.
  • Figure 4 shows gusset panels 18, 20 folded over gusset panels 16, 14. In an exemplary method at least some portion of the polymeric material of gusset panel 20 is in contact with at least some a portion of the polymeric material of gusset panel 16.
  • the exemplary perimeters 41-45, 51-55, 60-65, and 70-75 of the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are arranged to allow the gusset panels to overlap and secure to each other without adhesives. It is to be understood that the other gussets panels 22, 24, 26, 28 (not shown in Figures 2-6) are folded and secured in the same manner (not shown).
  • the sealed gussets may or may not be further secured to the sidewall panels. It is to further be understood that the order and manner of forming the container is not to be limited by the above exemplary method.
  • Figure 6 illustrates optional flange panels 30 folded and secured to each other. It is to be understood that an optional lid of various shapes and sizes could be secured to the flange panels 30. An exemplary lid would have a suitable material that could be secured to the exposed polymeric material of the flange panels 30. It is to be further understood that optional flange panels 30 could be configured in numerous ways, such as overlapping panels to form a lid with various closure arrangements, such as a tab 38 and slot 40 arrangement (not shown).

Abstract

A container blank is formed with a plurality of side panels (6, 8, 10, 12) secured to a bottom panel (4). Adjacent side panels are further secured to each other by gusset panels. The gusset panels include a first region (16, 20, 22, 26) and second region (14, 18, 24, 28) formed along a substantially central fold line (15, 19, 23, 27). The first region has an exposed area when folded over the second region. The gusset panels extend substantially along the length of the side panels. A polymeric material is secured to one-side of the blank. The gusset panels are dimension so that when the container blank is folded at least some portion of polymeric material on the first region and second region of the gusset panels are secured to each other. Then opposing gusset panels are folded so that at least some exposed area of two opposing gusset panels are in contact with each other.

Description

FOLDED CONTAINERAND METHOD
Field of the Invention
This invention relates to a container having a bottom panel for supporting container content, side panels for at least partially surrounding the content, and an access opening intended for the insertion or removal of content.
Description of the Related Art
It is known to make a container from a blank with a bottom panel, side panels, and gusset panels. Exemplary of such prior art is U.S. Patent No. 5,411,204 ('204) issued to K. F. DeMay, entitled "Reclosable Food Tray and Tray Blank". The DeMay patent teaches a method of forming a tray by sealing with adhesives the gusset panels to the side panels. However, at least one deficiency of this method is that the application of the adhesive increases the costs of forming the tray.
U.S. Patent 5, 873, 220 ('220) issued to Rune Haraldsson, et al entitled "Method for Producing a Self-Locking, Paperboard Pail-Like Container and Product Thereof describes a method for forming a container from a blank without the use of adhesives taught in the DeMay patent. The Haraldsson patent teaches a container blank with a bottom panel, side panels, and gusset panels. One side of the blank is coated with a polymeric material. The other side of the blank is coated with a particulate mineral. At least some portion of the particulate mineral layer is "masked" in the sealing area. In addition, at least some portion of the gusset panels is "cutaway" in the sealing area. The gusset panels are folded so that the gusset panels are partially overlapped and sealed to each other in the "masked" and "cut-away" area without the use of adhesives. However the "masking" and "cut-away" steps adds to the container's costs.
Summary of the Invention
A container blank is formed with a plurality of side panels secured to a bottom panel. Adjacent side panels are further secured to each other by gusset panels. The gusset panels include a first region and second region formed along a substantially central fold line. The first region has an exposed area when folded over the second region. The gusset panels extend substantially along the length of the side panels. A polymeric material is secured to one-side of the blank. The gusset panels are dimension so that when the container blank is folded at least some portion of polymeric material on the first region and second region of the gusset panels are secured to each other. Then opposing gusset panels are folded so that at least some exposed area of two opposing gusset panels are in contact with each other.
Brief Description of the Figures
Figure 1 is a plan view of an exemplary container blank according to the invention.
Figure 2 is an end elevation view of a partially formed container.
Figure 3 is an end elevation view after a gusset panel is partially folded.
Figure 4 is an end view of a formed container.
Figure 5 is a side view of a formed container.
Figure 6 is a top view of a formed container.
The features of the invention are best understood by considering the following detailed
description in conjunction with the accompanying figures. Detailed Description of the Invention
Figure 1 illustrates an exemplary container blank 100 according to the invention.
Figures 2-6 illustrate how the blank 100 is folded and various parts secured to each other to form a container 400 (Figures 4-6). Blank 100 can be formed from any suitable substrate, such as paperboard, and of any suitable thickness. An exemplary thickness is about 0.008 to 0.028 inches. [008] Blank 100 is exemplary coated on one side with a mineral coating. In an exemplary method, the exterior side is coated with a fluidized mixture of minerals, such as clay and calcium, and binders to form a smooth surface. The surface may undergo additional mechanical smoothing treatments. In an exemplary method graphic and advertising information is printed on the exterior side of a formed container 400 (Figures 4-6).
The other side of blank 100 is exemplary coated with a polymeric material, such as an extruded polymeric material. In a conventional extrusion process, the polymeric material is heated to a viscous flow temperature and extruded as a curtain onto the surface of the substrate. Typical coat weights are about 5 to about 20 pounds of extruded material per ream (3,000 ft. ) of substrate surface. Exemplary polymeric materials include polyethylene, polyethylene terephthalate (PET), and polypropylene. It is to be understood that the blank could also be coated with an aqueous emulsion coating, such as for example Styrene Acrylate or Ethele Vinyl Choloride. The polymeric material makes the container substantially moisture proof and allows various parts of the blank 100 to be heat sealed to each other as described below.
Exemplary blank 100 is illustrated with a bottom panel 4, side panels 6, 8, 10, and 12, gussets panels 14, 16, 18, 20, 22, 24, 26, 28. Optional flange panels 30 are also illustrated secured to the side panels 6, 8, 10, 12. Blank 100 may be made using any conventional blank forming techniques.
Gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are illustrated with exemplary central fold lines 15, 19, 23, 27. The gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are secured to the side panels 6, 8, 10, 12 along exemplary fold lines 81-88. The gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are illustrated with exemplary exterior perimeters 41-45, 51-55, 60-65, and 70-75. The perimeters are formed using conventional techniques. The exterior perimeters 41-45, 51-55, 60- 65, and 70-75 allow gussets panels 14, 16, 18, 20, 22, 24, 26, 28 to be contacted with each other along central axis fold line 15, 19, 23, 27 as illustrated in Figure 2. It is to be understood that blank 100 and its various parts can be dimensioned and shaped into many container configurations and that the scope of the invention is not limited to the exemplary container and shape shown in the exemplary Figures.
In an exemplary method, the blank 100 is inserted in a container forming apparatus (not shown). The polymeric material is heated (not shown), for example with hot air. A container platen (not shown) contacts (not shown) the blank 100 and forces the blank 100 into a container die (not shown). In an exemplary method the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are pressed together, for example, using spring loaded rollers, so that the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are secured to each other by the "heated" polymeric material. It is also possible to combine heating and pressure after folding the blank 100 using for example ultrasonic welding or heated sealing plates. It is also to be understood that the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 may simply be folded together without actually sealing in accordance with the invention. Figure 2 illustrates an end view of a partially formed container 200. Side panel 8 and gusset panels 16, 18 are visible. Also illustrated is an exposed area of gusset panel 20 surrounded by perimeter 61, 62, 64, 65.
Figure 3 illustrates the container 300 after gusset panels 14, 16 of Figure 2 are folded toward side panel 8. The exposed polymeric material region of gusset panel 16 with perimeter, 41, 42, 44, 45 and gusset panel 20 with perimeter 61, 62, 64, 65 are illustrated. [014] Figure 4 shows gusset panels 18, 20 folded over gusset panels 16, 14. In an exemplary method at least some portion of the polymeric material of gusset panel 20 is in contact with at least some a portion of the polymeric material of gusset panel 16. It is to be understood that the exemplary perimeters 41-45, 51-55, 60-65, and 70-75 of the gusset panels 14, 16, 18, 20, 22, 24, 26, 28 are arranged to allow the gusset panels to overlap and secure to each other without adhesives. It is to be understood that the other gussets panels 22, 24, 26, 28 (not shown in Figures 2-6) are folded and secured in the same manner (not shown). Using an exemplary
method of a platen (not shown) and container die (not shown) a container 400 (Figures 4-6) can
be formed in a single process using conventional container forming equipment and techniques. It is to be understood that the sealed gussets may or may not be further secured to the sidewall panels. It is to further be understood that the order and manner of forming the container is not to be limited by the above exemplary method.
Figure 6 illustrates optional flange panels 30 folded and secured to each other. It is to be understood that an optional lid of various shapes and sizes could be secured to the flange panels 30. An exemplary lid would have a suitable material that could be secured to the exposed polymeric material of the flange panels 30. It is to be further understood that optional flange panels 30 could be configured in numerous ways, such as overlapping panels to form a lid with various closure arrangements, such as a tab 38 and slot 40 arrangement (not shown).
Once given the above disclosure, many other features, modifications or improvements will become apparent to the skilled artisan. Such features, modifications or improvements are, therefore, considered to be a part of this invention, the scope of which is to be determined by the following claims.

Claims

Claims
1. An apparatus comprising: a bottom panel;
a plurality of side panels secured to each side of said bottom panels;
a plurality of gusset panels secured to said plurality of side panels, wherein said gusset panels are dimensioned so that an interior region of one gusset panels can be folded and placed in contact with an interior region of an opposing gusset panel.
2. The apparatus of claim 1 wherein at least one flange panel is secured to a side panel.
3. The apparatus of claim 1 wherein said gusset panels form a first region and second region along a central axis fold line.
4. The apparatus of claim 3 wherein said gusset panels are dimension so that said first region has more surface area than said second region.
5. The apparatus of claim 4 wherein said first region is folded and contacted with said second region so that at least some portion of said first region is exposed and not in contact with said second region.
6. The apparatus of claim 5 wherein opposing gusset panels are folded and contacted so that at least some exposed area of a first region of a gusset panel is in contact with an exposed area of a first region of an opposing gusset panel.
7. The apparatus of claim 1 wherein at least one surface of said apparatus comprises a polymeric material.
8. The apparatus of claim 7 wherein said polymeric material comprises at least one of the following: polyethylene, polyethylene phteraphalate, polypropylene, styrene acrylate, and ethele vinyl chloride.
9. The apparatus of claim 7 wherein said polymeric material is heat sealable.
10. A method for forming an apparatus comprising the steps of: providing a substrate; forming said substrate into a container blank comprising a bottom panel, a plurality of side panels secured to each side of said bottom panels; and a plurality of gusset panels secured to said side panels, wherein said gusset panels are dimensioned so that an interior region of one gusset panel can be folded to contact an interior region of an opposing gusset panel.
11. The method of claim 10 wherein said apparatus further comprises at least one flange panel secured to a side panel.
12. The method of claim 10 wherein said gusset panels form a first region and second region
along a central axis fold line.
13. The method of claim 12 wherein said gusset panels are dimension so that said first region has more surface area than said second region.
14. The method of claim 13 wherein said first region is folded and contacted with said second region so that at least some portion of said first region is exposed and not in contact with said second region.
15. The method of claim 14 wherein opposing gusset panels are folded and contacted so that at least some exposed area of a first region of a gusset panel is in contact with an exposed area of a first region of an opposing gusset panel.
16. The method of claim 10 wherein at least one surface of said substrate comprises a
polymeric material.
17. The method of claim 16 wherein said polymeric material comprises at least one of the following: polyethylene, polyethylene phteraphalate, polypropylene, styrene acrylate, and ethele vinyl chloride.
18. The method of claim 17 wherein said polymeric material is heat sealable.
19. The method of claim 18 wherein said polymeric material is heated and said apparatus is folded so that the gusset panels of an interior region of one gusset panel is secured to an interior region of an opposing gusset panel.
20. The method of claim 10 wherein said apparatus comprises a four sided bottom panel and a four side panels.
PCT/US2003/008331 2002-03-18 2003-03-18 Folder container and method WO2003080453A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003225853A AU2003225853A1 (en) 2002-03-18 2003-03-18 Folder container and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36476702P 2002-03-18 2002-03-18
US60/364,767 2002-03-18

Publications (1)

Publication Number Publication Date
WO2003080453A1 true WO2003080453A1 (en) 2003-10-02

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AU (1) AU2003225853A1 (en)
WO (1) WO2003080453A1 (en)

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US20090039144A1 (en) * 2007-08-08 2009-02-12 Hooi Koon H Folded food carton
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AU2003225853A1 (en) 2003-10-08

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