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US20070228125A1 - Container - Google Patents

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Publication number
US20070228125A1
US20070228125A1 US11/394,412 US39441206A US2007228125A1 US 20070228125 A1 US20070228125 A1 US 20070228125A1 US 39441206 A US39441206 A US 39441206A US 2007228125 A1 US2007228125 A1 US 2007228125A1
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US
United States
Prior art keywords
container
lid
side walls
corrugated
attached
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/394,412
Inventor
Charles Habeger
Randall Telling
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.)
Weyerhaeuser Co
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US11/394,412 priority Critical patent/US20070228125A1/en
Publication of US20070228125A1 publication Critical patent/US20070228125A1/en
Assigned to WEYERHAEUSER COMPANY reassignment WEYERHAEUSER COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HABEGER, CHARLES C, JR, TELLING, RANDALL T
Abandoned legal-status Critical Current

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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
    • B65D5/32—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 having bodies formed by folding and interconnecting two or more blanks
    • B65D5/326—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 having bodies formed by folding and interconnecting two or more blanks at least one container body part formed by folding a single blank to a permanently assembled tube

Definitions

  • RSC regular slotted container
  • It is the blank 10 shown in FIG. 1 and the container 11 shown in FIG. 2 . It has side walls 12 and 13 and end walls 14 and 15 attached to each other by score lines.
  • An attachment panel 16 is attached to side wall 12 by a score line.
  • the attachment panel 16 is glued to end panel 15 in the finished container.
  • Closure flaps 17 , 18 , 19 and 20 are attached by score lines on the upper and lower edges of the side walls 12 and 13 , and closure flaps 21 , 22 , 23 and 24 are attached to the upper and lower edges of end walls 14 and 15 .
  • the container In forming the container for use, the container is opened from a lay-flat position and the lower closure flaps 19 , 20 , 23 and 24 are folded in and fastened together. The container is filled and the upper closure flaps 17 , 18 , 21 and 22 are folded in and fastened together. The top and bottom end panel closure flaps are usually covered by the side panel closure flaps.
  • a container should hold the containers above it without transferring the load to the contained product and its deformation should be minimal.
  • a corrugated container has a wall made of central flutes made of corrugating medium held in place by outer liners glued to the flutes.
  • the flutes will normally extend vertically in the filled container to provide stacking strength. The actual stacking strength will depend on the size of the flute and the weight of the corrugating medium and the weight of the liners.
  • Basis weights for corrugating medium are from 16 to 40 pounds per thousand square feet.
  • Basis weights for liner are from 20 to 96 per thousand square feet.
  • the stacking strength may also be increased by using multiwall board.
  • the board may be double wall with an external liner, a corrugated medium, a central liner, another corrugated medium and another outer liner.
  • the board may be triple wall with an outer liner, a corrugating medium, an inner liner, a second corrugating medium, another inner liner, another corrugating medium and another external liner.
  • the medium may be any flute size and the weights of the various elements may be the same or different. Again, the addition of the additional material increases the cost of the container.
  • FIG. 1 is a top plan view of a prior art regular slotted container.
  • FIG. 2 is an isometric view of a container formed from the blank of FIG. 1 .
  • FIGS. 3-4 are top plan views of blanks for an embodiment of the present invention.
  • FIG. 5 is an isometric view of a container made from the blanks of FIGS. 3-4 .
  • FIG. 6 is a top plan view a blank for an embodiment of the present invention. It is the bottom lid of a double cover container.
  • the blank 30 for the container lid has a central panel 31 and four side panels 32 attached to the four sides of the central panel 31 by score lines 33 . There are no tabs attached to the side panels 32 .
  • the blank is made of solid fiberboard having a basis weight of 50 to 400 pound per thousand square feet.
  • the blank 40 for the container body has side walls 41 , 42 , 43 and 44 and attachment panel 45 connected by score lines 46 , 47 , 48 and 49 .
  • the attachment panel 45 is attached to the outer edge of side wall 41 .
  • the body usually is formed into a lay flat condition at the corrugated plant by gluing the attachment panel 45 to the outer edge of the inner side of side panel 41 .
  • the container can be formed by hand or by machine.
  • the side walls 41 , 42 , 43 and 44 will be squared so that two opposing side are substantially parallel.
  • the walls will form a rectangular tube.
  • the score lines of the lid 30 will be aligned with the outside of the side walls of the body.
  • Glue will be placed on the panels 32 .
  • the glue may be placed on the panels 32 while the lid is being moved into position for the alignment step, during the alignment step, the seating step or after the body and lid have been aligned and seated.
  • the panels will then be folded up around the side walls and adhered to the side walls.
  • the side walls 81 ′, 82 ′, 83 ′ and 84 ′ will be squared so that two opposing sides are substantially parallel.
  • the side walls will form a rectangular tube.
  • the tube will be horizontal.
  • the lid 100 will be moved vertically into alignment with the body. Glue will be placed on the lid side panels during that movement.
  • a mandrel will be inserted into the container body and move the body toward the lid until the side walls are seated on the lid and the sides of the side walls are aligned with the lid score lines.
  • the mandrel will carry the body and lid will through a die cavity which will bend the lid panels around their score lines and place the lid panels against the container side walls, holding the lid panels against the side wall long enough to adhere the lid panels to the side walls.
  • the container will be filled with product and a lid placed on the top of the container.
  • the top lid may have the design shown in FIG. 3 or may have the design shown in FIG. 6 .
  • the blank 50 for a container upper lid has a central panel 51 and four side panels 52 attached to the four sides of the central panel 51 by score lines 53 .
  • the tabs 54 are bent upwardly until they are perpendicular to the side panels 52 .
  • the side panels 52 are bent upwardly until they are perpendicular to the central panel 51 .
  • the tabs 54 are attached to the adjacent side panel 52 .
  • the blank is also made of solid fiberboard.
  • the upper lid may be loose, or the lid may be attached to the container.
  • the container and lid are shown as being four sided.
  • the container and lid may have any number of sides. In any configuration the side walls of the container will fit into the crushed area of the upper and lower lids.
  • Embodiments of the present invention have been tested for stacking strength and for side deformation. In the tests the containers were filled with tennis balls.
  • an embodiment was compared to an RSC.
  • Both containers were single wall using a 26 pound C flute corrugated medium and a 35 pound liner glued to both sides of the flutes.
  • the containers were 24 inches long, 15 inches wide and 15 inches deep.
  • the maximum compression load for the RSC was 600 pounds.
  • the maximum compression load for the container with a 90 pound fibreboard glued lid was 1390 pounds.
  • the deformation of the side walls at maximum load for the RSC was 0.34 inches.
  • the deformation of the side walls of the container with a 90 pound fibreboard glued lid at maximum load was 0.1 inches.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Abstract

A container has side walls of substantially equal height and a lid. The container is of corrugated material. The lid has a central panel and side panels attached to the central panel by score lines. The lid is of fiberboard material. The lid side panels are glued to the container side walls.

Description

  • This is directed to a shipping container and the blanks for the container.
  • One type of container used as a shipping container is a regular slotted container known as an RSC. It is the blank 10 shown in FIG. 1 and the container 11 shown in FIG. 2. It has side walls 12 and 13 and end walls 14 and 15 attached to each other by score lines. An attachment panel 16 is attached to side wall 12 by a score line. The attachment panel 16 is glued to end panel 15 in the finished container. Closure flaps 17, 18, 19 and 20 are attached by score lines on the upper and lower edges of the side walls 12 and 13, and closure flaps 21, 22, 23 and 24 are attached to the upper and lower edges of end walls 14 and 15.
  • In forming the container for use, the container is opened from a lay-flat position and the lower closure flaps 19, 20, 23 and 24 are folded in and fastened together. The container is filled and the upper closure flaps 17, 18, 21 and 22 are folded in and fastened together. The top and bottom end panel closure flaps are usually covered by the side panel closure flaps.
  • For storage and transport the containers are stacked several high so stacking strength is necessary. A container should hold the containers above it without transferring the load to the contained product and its deformation should be minimal.
  • A corrugated container has a wall made of central flutes made of corrugating medium held in place by outer liners glued to the flutes. The flutes will normally extend vertically in the filled container to provide stacking strength. The actual stacking strength will depend on the size of the flute and the weight of the corrugating medium and the weight of the liners.
  • There are several size flutes. Some flute sizes are A flute which has 36 flutes per lineal flute and is 3/16 inch from flute tip to flute tip; B flute which has 51 flutes per lineal flute and is 3/32 inch from flute tip to flute tip; C flute which has 39 to 42 flutes per lineal flute and is 9/64 inch from flute tip to flute tip; and E flute which has 96 flutes per lineal flute and is 3/64 inch from flute tip to flute tip.
  • Basis weights for corrugating medium are from 16 to 40 pounds per thousand square feet. Basis weights for liner are from 20 to 96 per thousand square feet.
  • It should be understood that the higher basis weights increase the cost of a container.
  • The stacking strength may also be increased by using multiwall board. The board may be double wall with an external liner, a corrugated medium, a central liner, another corrugated medium and another outer liner. The board may be triple wall with an outer liner, a corrugating medium, an inner liner, a second corrugating medium, another inner liner, another corrugating medium and another external liner. The medium may be any flute size and the weights of the various elements may be the same or different. Again, the addition of the additional material increases the cost of the container.
  • After much research, and many trials it has been discovered that there is a simple way of increasing the stacking strength of a container without increasing the basis weight of the various elements of the container, or increasing the number of walls of the container.
  • FIG. 1 is a top plan view of a prior art regular slotted container.
  • FIG. 2 is an isometric view of a container formed from the blank of FIG. 1.
  • FIGS. 3-4 are top plan views of blanks for an embodiment of the present invention.
  • FIG. 5 is an isometric view of a container made from the blanks of FIGS. 3-4.
  • FIG. 6 is a top plan view a blank for an embodiment of the present invention. It is the bottom lid of a double cover container.
  • The blank 30 for the container lid has a central panel 31 and four side panels 32 attached to the four sides of the central panel 31 by score lines 33. There are no tabs attached to the side panels 32. The blank is made of solid fiberboard having a basis weight of 50 to 400 pound per thousand square feet.
  • The blank 40 for the container body has side walls 41, 42, 43 and 44 and attachment panel 45 connected by score lines 46, 47, 48 and 49. The attachment panel 45 is attached to the outer edge of side wall 41.
  • The body usually is formed into a lay flat condition at the corrugated plant by gluing the attachment panel 45 to the outer edge of the inner side of side panel 41.
  • At the point of use the container can be formed by hand or by machine.
  • In the method of forming the container, the side walls 41,42, 43 and 44 will be squared so that two opposing side are substantially parallel. The walls will form a rectangular tube. The score lines of the lid 30 will be aligned with the outside of the side walls of the body. Glue will be placed on the panels 32. The glue may be placed on the panels 32 while the lid is being moved into position for the alignment step, during the alignment step, the seating step or after the body and lid have been aligned and seated. The panels will then be folded up around the side walls and adhered to the side walls.
  • In one embodiment the side walls 81′, 82′, 83′ and 84′ will be squared so that two opposing sides are substantially parallel. The side walls will form a rectangular tube. The tube will be horizontal. The lid 100 will be moved vertically into alignment with the body. Glue will be placed on the lid side panels during that movement. A mandrel will be inserted into the container body and move the body toward the lid until the side walls are seated on the lid and the sides of the side walls are aligned with the lid score lines. The mandrel will carry the body and lid will through a die cavity which will bend the lid panels around their score lines and place the lid panels against the container side walls, holding the lid panels against the side wall long enough to adhere the lid panels to the side walls.
  • The container will be filled with product and a lid placed on the top of the container. The top lid may have the design shown in FIG. 3 or may have the design shown in FIG. 6. The blank 50 for a container upper lid has a central panel 51 and four side panels 52 attached to the four sides of the central panel 51 by score lines 53. There are tabs 54 attached to the sides of panels 52. In forming the lid the tabs 54 are bent upwardly until they are perpendicular to the side panels 52. The side panels 52 are bent upwardly until they are perpendicular to the central panel 51. The tabs 54 are attached to the adjacent side panel 52. The blank is also made of solid fiberboard.
  • The upper lid may be loose, or the lid may be attached to the container.
  • The container and lid are shown as being four sided. The container and lid may have any number of sides. In any configuration the side walls of the container will fit into the crushed area of the upper and lower lids.
  • Embodiments of the present invention have been tested for stacking strength and for side deformation. In the tests the containers were filled with tennis balls.
  • In one test an embodiment was compared to an RSC. Both containers were single wall using a 26 pound C flute corrugated medium and a 35 pound liner glued to both sides of the flutes. The containers were 24 inches long, 15 inches wide and 15 inches deep. The maximum compression load for the RSC was 600 pounds. The maximum compression load for the container with a 90 pound fibreboard glued lid was 1390 pounds. The deformation of the side walls at maximum load for the RSC was 0.34 inches. The deformation of the side walls of the container with a 90 pound fibreboard glued lid at maximum load was 0.1 inches.
  • In another test an embodiment was compared to an RSC. Both containers were double wall using a 35 pound liner glued to one side of a 26 pound B flute corrugated medium, a 35 pound center liner glued to the flutes on both sides, a 26 pound B flute corrugated medium and a 35 pound liner glued to the those flutes. The containers were 24 inches long, 15 inches wide and 15 inches deep. The maximum compression load for the RSC was 1500 pounds. The maximum compression load for the container with a 90 pound fibreboard glued lid was 3000 pounds. The average deformation of the side walls at maximum load for the RSC was 0.57 inches. The deformation of the side walls of the container with a 90 pound fibreboard glued lid at maximum load was 0.13 inches.
  • While embodiments of the invention has been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the invention.

Claims (9)

1. A container comprising
a container having upstanding side walls of substantially equal height, the side walls being of corrugated material,
a top and bottom lid for the container, the lids being of solid fiber material,
the lids having a central panel and side panels attached to the central panel by score lines,
the bottom lid being attached to one end of the container side walls,
the bottom lid side panels being glued to the container side walls.
2. The container of claim 1 wherein there are no tabs on the side edges of the bottom lid side panels.
3. The container of claim 1 wherein
the container side walls each have at least one layer of corrugated material and liner material attached on both sides of the corrugated material.
4. The container of claim 3 wherein
the lid is has a basis weight of 50 to 400 pounds per thousand square feet.
5. The container of claim 3 wherein
the side walls are single wall corrugated with one corrugated layer and a liner attached to each side of the corrugated layer.
6. The container of claim 5 wherein
the lid is has a basis weight of 50 to 400 pounds per thousand square feet.
7. The container of claim 3 wherein
the side walls are multi-wall corrugated with at least two corrugated layers and a liner attached to the outer side of each corrugated layer, and a liner between the corrugated layers.
8. The container of claim 7 wherein
the lid is has a basis weight of 50 to 400 pounds per thousand square feet.
9. The container of claim 1 wherein there are no tabs on the side edges of the top lid side panels and the top panels are glued to the side walls of the container.
US11/394,412 2006-03-31 2006-03-31 Container Abandoned US20070228125A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/394,412 US20070228125A1 (en) 2006-03-31 2006-03-31 Container

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Application Number Priority Date Filing Date Title
US11/394,412 US20070228125A1 (en) 2006-03-31 2006-03-31 Container

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US20070228125A1 true US20070228125A1 (en) 2007-10-04

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430149A (en) * 1920-11-15 1922-09-26 Herbert R Bliss Shipping case
US2704179A (en) * 1949-10-13 1955-03-15 Oswego Falls Corp Carton end closure
US2766923A (en) * 1953-10-19 1956-10-16 Container Corp Container with reinforced closure
US3291364A (en) * 1964-07-02 1966-12-13 Packaging Corp America Pallet container
US4017016A (en) * 1976-03-01 1977-04-12 Iwn, Inc. Shipping container for perishables
US4830271A (en) * 1987-11-19 1989-05-16 Macmillan Bloedel Limited End closure for a multi-walled container
US5215248A (en) * 1988-12-29 1993-06-01 Hexacomb Corporation Collapsible shipping carton
US5758818A (en) * 1997-03-28 1998-06-02 Mott's Inc. Dividable multi-compartment container
US5938108A (en) * 1996-12-16 1999-08-17 Tenneco Packaging Cheese barrel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430149A (en) * 1920-11-15 1922-09-26 Herbert R Bliss Shipping case
US2704179A (en) * 1949-10-13 1955-03-15 Oswego Falls Corp Carton end closure
US2766923A (en) * 1953-10-19 1956-10-16 Container Corp Container with reinforced closure
US3291364A (en) * 1964-07-02 1966-12-13 Packaging Corp America Pallet container
US4017016A (en) * 1976-03-01 1977-04-12 Iwn, Inc. Shipping container for perishables
US4830271A (en) * 1987-11-19 1989-05-16 Macmillan Bloedel Limited End closure for a multi-walled container
US5215248A (en) * 1988-12-29 1993-06-01 Hexacomb Corporation Collapsible shipping carton
US5938108A (en) * 1996-12-16 1999-08-17 Tenneco Packaging Cheese barrel
US5758818A (en) * 1997-03-28 1998-06-02 Mott's Inc. Dividable multi-compartment container

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Legal Events

Date Code Title Description
AS Assignment

Owner name: WEYERHAEUSER COMPANY, WASHINGTON

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HABEGER, CHARLES C, JR;TELLING, RANDALL T;REEL/FRAME:020262/0774

Effective date: 20071213

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION