US3572575A - Self-locking paperboard shipping container - Google Patents
Self-locking paperboard shipping container Download PDFInfo
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- US3572575A US3572575A US817332A US3572575DA US3572575A US 3572575 A US3572575 A US 3572575A US 817332 A US817332 A US 817332A US 3572575D A US3572575D A US 3572575DA US 3572575 A US3572575 A US 3572575A
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- Prior art keywords
- self
- locking
- folded
- set forth
- top panel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D13/00—Containers having bodies formed by interconnecting two or more rigid, or substantially rigid, components made wholly or mainly of the same material, other than metal, plastics, wood, or substitutes therefor
- B65D13/04—Containers having bodies formed by interconnecting two or more rigid, or substantially rigid, components made wholly or mainly of the same material, other than metal, plastics, wood, or substitutes therefor of paper
Definitions
- Holler ABSTRACT A self-locking folded paperboard shipping container including interlocking body and end portions wherein the end panels are formed with reversely bent flaps on each side forming an interlocking V to engage intumed portions on said body when said end panels are inserted into the body through an open top flap and pushed into position to close the ends and form a rigid interlocked structure.
- This invention relates to containers and, more particularly, relates to a container constructed of fibrous material such as paperboard or the like and which may be folded or collapsed for shipping or storage and unfolded and set up as needed.
- FIG. l is a plan view of a paperboard blank adapted to be folded to form the main body portion of the subject container.
- FIG. 2 is a perspective view of the main body blank of FIG. I showing its assembly procedure.
- FIG. 3 is a plan view of the paperboard blank which is adapted to form one of the end portionsto be used in conjunction with the body blank of FIGS. 1 and 2.
- FIG. 4 is a perspective view of two end portions formed from box blanks such as that shown in FIG. 3'.
- FIG. 5 is a perspective view of the assembled container with parts broken away in section showing the engagement between the main body portion, and the end portion.
- this invention provides a substantially rigid container which may be constructed of a fibrous product such-as paperboard and which is adapted to hold a rather large, bulky product. More specifically, this invention provides a threepiece folded paperboard shipping container in which the main body of the carton is formed by first folding the ends of asingle blank inward, then forming the body into a generally rectangular shape while leaving the top flap open. The end panels are formed with reversely bent flaps on each side forming an interlocking V to engage the intumed end portions of the body. The folded end portions are inserted into the carton through the open top flap and pushed into position, thereby closing the ends and retaining the .body of the carton in its rectangular shape.
- a large rectangular container which exhibits sufficient rigidity and strength properties to make it well suited for containing large, bulky items, but which is also light inweight and inexpensive when compared with standard wooden crates used for the same purpose.
- FIG. 1 shows a box blank which has various panel components by suitable score lines 30.
- the transformation of the box blank 10 into the main body portion 12 can-best be understood by reference to FIG. 2.
- the end flaps 26 and 28 are first folded on their score lines 30 so as to lay flat on the various panel components of the main body 12.
- the side panels I4 and 16 which respectively form the front and back of the container are then folded on their score lines 24 to a position perpendicular to the bottom panel 118.
- the top panel 20 is folded to a position so as to also be oriented parallel to the bottom panel 18 and perpendicular to the front and back panels I4 and I6.
- a generally rectangular body configuration has been formed and the infolded end flaps 26 and 28 have been locked into position to accept the end panels, which will be described later.
- FIG. 3 shows a paperboard box blank 32 which is scored and sized so as to be adapted to be formed into an end panel such as those indicated generally by the numerals 34 and 36 in FIG. 4.
- the box blank 32 includes a main end panel 38 which is bounded on each of its four sides by a flange portion which is divided into two flaps which'are capable of being reversely bent so as to form an interlocking V portion.
- the flanges 40 and 42 on opposite sides of the end panel 38 are divided by score lines 44 and 46 into a pair of identical flaps 48 and 50.
- the flanges 52 and 54 on the top and bottom respectively of the end panel 38 are divided by score lines 54 and 56 into a pair of dissimilar flaps 58 and 60.
- the flaps 60 differ from flaps 58 in that they have a tapered lead-in portion 6].
- Each of the flanges 40, 42, 52, and 54 are foldably attached to the end panel 38 by means of score lines 62.
- score lines 62 To understand the folding of these flap portions of the box blank 32, reference should be had to the formed end portions 34 and 36 in FIG. 4.
- each of the pairs of innermost flaps 48 and 58 are folded rearwardly of the end panel 38 while the pairs of outermost flaps 50 and 60 are reversely folded with respect to the flaps 48 andSB in the forward direction.
- the reversely bent flap portions form four V-shaped members on the end panel 38 which are adapted to interlock with the intumed end flaps 26 of the main body I2.
- the end portion 36 is formed in an'identical manner to end portion 34 and has fourV-shaped members which are adapted to engage the intumed end flap 28 at the other end of the main body 12.
- the end portions 34 and 36 are inserted into the main body 12 through the opening formed by raising the top panel 20 of the body I2.'The end portions 34 and 36 are then pushed into the position as shown in FIG. 5.
- the upper V-shaped member formed by flaps 58 and 60 on the end panel 38 interlock with the intumed end flap 26 on the body portion 12.
- the other V-shapedportions formed by the flaps 48 and 50 interlock with the intumed end flap 26 to lock the end portion 34 tothe main body 12, thereby forming a rigid end construction.
- the end flaps 60 are tapered at their lead-in end 6t so as to facilitate the easy insertion of the portion of the intumed end flap 26 attached to the top panel 20 and the bottom panel 18.
- the top panel 20 After insertion of the articleto be contained, the top panel 20 is locked'into place and its top closing flap 22 folded over the front panel 14 and stitched thereto, thereby forming a completely rigid closed container.
- the positioning and assembly of the end portion 36 to the other end of the body 12 is identical to that explained in conjunction with end portion 34.
- a completely rigid container has been formed which is suitable for shipping any number of articles which require a large rectangular container.
- a self-locking folded paperboard container comprising:
- body means having intumedportions along both of its ends;
- a pair of end closing means formed with reversely bent flaps on each side forming an interlocking V on each side thereof adapted to engage said intumed portions on said body means to close the ends of said body means and form a rigid interlocked structure.
- a self-locking folded paperboard container as set forth in claim 1 wherein said body means and said end closing means are substantially rectangular.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Cartons (AREA)
Abstract
A self-locking folded paperboard shipping container including interlocking body and end portions wherein the end panels are formed with reversely bent flaps on each side forming an interlocking V to engage inturned portions on said body when said end panels are inserted into the body through an open top flap and pushed into position to close the ends and form a rigid interlocked structure.
Description
United States Patent Gus John Doroiachuk Willingboro, NJ. 817,332
Apr. 18, 1969 Mar. 30, 1971 Owens Illinois, Inc.
Inventor Appl. No. Filed Patented Assignees SELF-LOCKING PAPERBOARD SHIPPING CONTAINER 7 Claims, 5 Drawing Figs.
US. Cl. 229/23, 229/37 Int. Cl B65d 13/00, B65d 5/02 FieldofSearch 229/37 (B),
23 (BC); 206/46 (Mach. Furn.)
[56] References Cited UNITED STATES PATENTS 1,703,399 2/ 1929 Lang 229/23(B) 2,244,282 6/ 194i Bergstein (229/37(R)U 2,318,655 5/1943 Zalkind 229/37(R) 3,085,734 4/1963 Kauffeld 229/23(B) 3,285,496 1 H1966 Bamhardt et al. 229/23(B)X Primary Examiner-Davis T. Moorhead Attorneys-Alan J. Steger and E. .l. Holler ABSTRACT: A self-locking folded paperboard shipping container including interlocking body and end portions wherein the end panels are formed with reversely bent flaps on each side forming an interlocking V to engage intumed portions on said body when said end panels are inserted into the body through an open top flap and pushed into position to close the ends and form a rigid interlocked structure.
Patented March 30, 1971 3,
2 Sheets-Sheet 2 FIG. 2
INVENTOR. G03 llloebmwooc 63. Hu k Amoamevs SELF-LOCKING PAPERBOARI) SHIPPING CONTAINER BACKGROUND OF THE INVENTION This invention relates to containers and, more particularly, relates to a container constructed of fibrous material such as paperboard or the like and which may be folded or collapsed for shipping or storage and unfolded and set up as needed.
It is very desirable to have an inexpensive container suitable for packaging large bulky items such as bathtubs, metal cabinets, etc. Suitable containers for such large bulky items have typically been rather expensive due to the high strength characteristics necessary to contain such products. In general, most of these types-of products have been shipped in heavy wooden crates. These wooden containers are not only extremely heavy and cumbersome, but expensive, both from the standpoint of material cost and the assembly time involved.
Hence, there is a significant need for, and it is an object of this invention to provide an inexpensive lightweight container which is adapted for packaging and shipping large, bulky items. Other objects, features,and advantages of this invention will become obvious to those skilled in the art upon reference to the following detailed description and the drawings illustrating a preferred embodiment thereof.
IN THE DRAWINGS FIG. l is a plan view of a paperboard blank adapted to be folded to form the main body portion of the subject container.
FIG. 2 is a perspective view of the main body blank of FIG. I showing its assembly procedure.
FIG. 3 is a plan view of the paperboard blank which is adapted to form one of the end portionsto be used in conjunction with the body blank of FIGS. 1 and 2.
FIG. 4 is a perspective view of two end portions formed from box blanks such as that shown in FIG. 3'.
FIG. 5 is a perspective view of the assembled container with parts broken away in section showing the engagement between the main body portion, and the end portion.
SUMMARY OF THE INVENTION In general, this invention provides a substantially rigid container which may be constructed of a fibrous product such-as paperboard and which is adapted to hold a rather large, bulky product. More specifically, this invention provides a threepiece folded paperboard shipping container in which the main body of the carton is formed by first folding the ends of asingle blank inward, then forming the body into a generally rectangular shape while leaving the top flap open. The end panels are formed with reversely bent flaps on each side forming an interlocking V to engage the intumed end portions of the body. The folded end portions are inserted into the carton through the open top flap and pushed into position, thereby closing the ends and retaining the .body of the carton in its rectangular shape. After the product to be contained has been placed within the carton, the top flapis closed and stitched to the body portion, thereby interlocking the end folded end portions on the body with the reversely bent-flaps on the ends to form a rigid interlocked structure. Thus, a large rectangular container is provided which exhibits sufficient rigidity and strength properties to make it well suited for containing large, bulky items, but which is also light inweight and inexpensive when compared with standard wooden crates used for the same purpose.
DESCRIPTION OF THE PREFERRED EMBODIMENT More particularly, FIG. 1 shows a box blank which has various panel components by suitable score lines 30. The transformation of the box blank 10 into the main body portion 12 can-best be understood by reference to FIG. 2. The end flaps 26 and 28 are first folded on their score lines 30 so as to lay flat on the various panel components of the main body 12. The side panels I4 and 16 which respectively form the front and back of the container are then folded on their score lines 24 to a position perpendicular to the bottom panel 118. Likewise, the top panel 20 is folded to a position so as to also be oriented parallel to the bottom panel 18 and perpendicular to the front and back panels I4 and I6. Thus, a generally rectangular body configuration has been formed and the infolded end flaps 26 and 28 have been locked into position to accept the end panels, which will be described later.
FIG. 3 shows a paperboard box blank 32 which is scored and sized so as to be adapted to be formed into an end panel such as those indicated generally by the numerals 34 and 36 in FIG. 4. The box blank 32 includes a main end panel 38 which is bounded on each of its four sides by a flange portion which is divided into two flaps which'are capable of being reversely bent so as to form an interlocking V portion. The flanges 40 and 42 on opposite sides of the end panel 38 are divided by score lines 44 and 46 into a pair of identical flaps 48 and 50. The flanges 52 and 54 on the top and bottom respectively of the end panel 38 are divided by score lines 54 and 56 into a pair of dissimilar flaps 58 and 60. The flaps 60 differ from flaps 58 in that they have a tapered lead-in portion 6]. Each of the flanges 40, 42, 52, and 54 are foldably attached to the end panel 38 by means of score lines 62. To understand the folding of these flap portions of the box blank 32, reference should be had to the formed end portions 34 and 36 in FIG. 4. To form the end portion 34, each of the pairs of innermost flaps 48 and 58 are folded rearwardly of the end panel 38 while the pairs of outermost flaps 50 and 60 are reversely folded with respect to the flaps 48 andSB in the forward direction. Thus, as shown in FIG. 4, the reversely bent flap portions form four V-shaped members on the end panel 38 which are adapted to interlock with the intumed end flaps 26 of the main body I2. The end portion 36 is formed in an'identical manner to end portion 34 and has fourV-shaped members which are adapted to engage the intumed end flap 28 at the other end of the main body 12.
Once the main body has been folded into the rectangular construction as shown in FIG. 2 and the end portions 34 and 36 have been formed as shown in FIG. 4, the end portions 34 and 36 are inserted into the main body 12 through the opening formed by raising the top panel 20 of the body I2.'The end portions 34 and 36 are then pushed into the position as shown in FIG. 5. Here it canbe seen that the upper V-shaped member formed by flaps 58 and 60 on the end panel 38 interlock with the intumed end flap 26 on the body portion 12. Likewise, the other V-shapedportions formed by the flaps 48 and 50 interlock with the intumed end flap 26 to lock the end portion 34 tothe main body 12, thereby forming a rigid end construction. As mentioned previously, the end flaps 60 are tapered at their lead-in end 6t so as to facilitate the easy insertion of the portion of the intumed end flap 26 attached to the top panel 20 and the bottom panel 18.
After insertion of the articleto be contained, the top panel 20 is locked'into place and its top closing flap 22 folded over the front panel 14 and stitched thereto, thereby forming a completely rigid closed container. The positioning and assembly of the end portion 36 to the other end of the body 12 is identical to that explained in conjunction with end portion 34. Thus, a completely rigid container has been formed which is suitable for shipping any number of articles which require a large rectangular container.
Hence, the unique combination of three relatively simple paperboard box blanks-folded and assembled in the manner suggested by this invention results in the formation of a large rectangular container exhibiting great rigidity and strength properties but whichis light in weight and economical. Thus, the necessity of utilizing cumbersome and expensive wooden crates to package and ship bulky articles such as bathtubs,
metal cabinets, etc., has been obviated by the unique container of this invention. It should be obvious that the invention is not limited to the fonnation of a rectangular container.
Although but one embodiment of this invention has been shown and described in detail, it should be clear to those skilled in the art to which it pertains that many changes and modifications may be made thereto without departing from the scope of the invention.
lclaim:
l. A self-locking folded paperboard container comprising:
body means having intumedportions along both of its ends;
and
a pair of end closing means formed with reversely bent flaps on each side forming an interlocking V on each side thereof adapted to engage said intumed portions on said body means to close the ends of said body means and form a rigid interlocked structure.
2. A self-locking folded paperboard container as set forth in claim 1 wherein said body means and said end closing means are substantially rectangular.
3. A self-locking folded paperboard container as set forth in claim 2 wherein said body means includes a pair of side panels, a bottom panel, and a top panel.
4. A self-locking folded paperboard container as set forth in claim 3 wherein said top panel includes a closing flap adapted to be folded perpendicular to said top panel and attached to one of said side panels.
5. A self-locking paperboard container as set forth in claim 3 wherein one of said side panels is formed between and integral with said top and bottom panels and the other of said side panels is formed integral with and positioned adjacent to the opposite side of said bottom panel.
6. A self-locking paperboard container as set forth in claim 5 wherein said top panel includes a closing flap adapted to be folded perpendicular to said top flap and attached to said other of said side panels.
7. A self-locking paperboard container as set forth in claim 6 wherein the outermost of the reversibly bent flaps on at least one side of each of said end closing means has a tapered leadin portion to facilitate the positioning of the intumed portions on said top panel thereunder when said top panel is closed and said closing flap attached to said one of said side panels.
Claims (7)
1. A self-locking folded paperboard container comprising: body means having inturned portions along both of its ends; and a pair of end closing means formed with reversely bent flaps on each side forming an interlocking V on each side thereof adapted to engage said inturned portions on said body means to close the ends of said body means and form a rigid interlocked structure.
2. A self-locking folded paperboard container as set forth in claim 1 wherein said body means and said end closing means are substantially rectangular.
3. A self-locking folded paperboard container as set forth in claim 2 wherein said body means includes a pair of side panels, a bottom panel, and a top panel.
4. A self-locking folded paperboard container as set forth in claim 3 wherein said top panel includes a closing flap adapted to be folded perpendicular to said top panel and attached to one of said side panels.
5. A self-locking paperboard container as set forth in claim 3 wherein one of said side panels is formed between and integral with said top and bottom panels and the other of said side panels is formed integral with and positioned adjacent to the opposite side of said bottom panel.
6. A self-locking paperboard container as set forth in claim 5 wherein said top panel includes a closing flap adapted to be folded perpendicular to said top flap and attached to said other of said side panels.
7. A self-locking paperboard container as set forth in claim 6 wherein the outermost of the reversibly bent flaps on at least one side of each of said end closing means has a tapered lead-in portion to facilitate the positioning of the inturned portions on said top panel thereunder when said top panel is closed and said closing flap attached to said one of said side panels.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81733269A | 1969-04-18 | 1969-04-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3572575A true US3572575A (en) | 1971-03-30 |
Family
ID=25222841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US817332A Expired - Lifetime US3572575A (en) | 1969-04-18 | 1969-04-18 | Self-locking paperboard shipping container |
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US (1) | US3572575A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3710539A (en) * | 1970-08-03 | 1973-01-16 | Du Pont | Container and method for packaging material sensitive to contaminants |
JPS4852775U (en) * | 1971-10-22 | 1973-07-09 | ||
US3744699A (en) * | 1971-06-18 | 1973-07-10 | Domtar Ltd | Internal interlocking flap box |
US3813844A (en) * | 1972-02-04 | 1974-06-04 | Olinkraft Inc | Method for forming package |
GB2208846A (en) * | 1987-08-19 | 1989-04-19 | Eps Group Ltd | Box |
US20050156016A1 (en) * | 2004-01-16 | 2005-07-21 | Chee-Seng Khor | Combination storage box |
US20070221716A1 (en) * | 2006-03-21 | 2007-09-27 | Jian Tao | Simple folding box |
WO2009137759A1 (en) * | 2008-05-09 | 2009-11-12 | Meadwestvaco Corporation | Product packaging with foldable end cap |
WO2009137760A1 (en) * | 2008-05-09 | 2009-11-12 | Meadwestvaco Corporation | Product packaging with foldable end cap |
US20150108126A1 (en) * | 2013-10-22 | 2015-04-23 | Wistron Corporation | Packing structure |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1703399A (en) * | 1925-08-24 | 1929-02-26 | Berthold A Lange | Box |
US2244282A (en) * | 1938-12-19 | 1941-06-03 | Bergstein Robert Morris | Art of making liquid-tight containers |
US2318655A (en) * | 1933-09-21 | 1943-05-11 | Zalkind Philip | Container |
US3085734A (en) * | 1961-05-17 | 1963-04-16 | Foils Packaging Corp | Cartons |
US3285496A (en) * | 1965-01-13 | 1966-11-15 | Barnhardt Mfg Co | Polygonal tubular container with reclosable end |
-
1969
- 1969-04-18 US US817332A patent/US3572575A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1703399A (en) * | 1925-08-24 | 1929-02-26 | Berthold A Lange | Box |
US2318655A (en) * | 1933-09-21 | 1943-05-11 | Zalkind Philip | Container |
US2244282A (en) * | 1938-12-19 | 1941-06-03 | Bergstein Robert Morris | Art of making liquid-tight containers |
US3085734A (en) * | 1961-05-17 | 1963-04-16 | Foils Packaging Corp | Cartons |
US3285496A (en) * | 1965-01-13 | 1966-11-15 | Barnhardt Mfg Co | Polygonal tubular container with reclosable end |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3710539A (en) * | 1970-08-03 | 1973-01-16 | Du Pont | Container and method for packaging material sensitive to contaminants |
US3744699A (en) * | 1971-06-18 | 1973-07-10 | Domtar Ltd | Internal interlocking flap box |
JPS4852775U (en) * | 1971-10-22 | 1973-07-09 | ||
JPS5138616Y2 (en) * | 1971-10-22 | 1976-09-21 | ||
US3813844A (en) * | 1972-02-04 | 1974-06-04 | Olinkraft Inc | Method for forming package |
GB2208846B (en) * | 1987-08-19 | 1991-06-26 | Eps Group Ltd | Packaging or the like container |
GB2208846A (en) * | 1987-08-19 | 1989-04-19 | Eps Group Ltd | Box |
US20050156016A1 (en) * | 2004-01-16 | 2005-07-21 | Chee-Seng Khor | Combination storage box |
US20070221716A1 (en) * | 2006-03-21 | 2007-09-27 | Jian Tao | Simple folding box |
WO2009137759A1 (en) * | 2008-05-09 | 2009-11-12 | Meadwestvaco Corporation | Product packaging with foldable end cap |
WO2009137760A1 (en) * | 2008-05-09 | 2009-11-12 | Meadwestvaco Corporation | Product packaging with foldable end cap |
US20120160904A1 (en) * | 2008-05-09 | 2012-06-28 | Susan Scior | Product packaging with foldable end cap |
US20150108126A1 (en) * | 2013-10-22 | 2015-04-23 | Wistron Corporation | Packing structure |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: OI FOREST PRODUCTS STS INC., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OWENS-ILLINOIS, INC.;REEL/FRAME:004744/0811 Effective date: 19870323 Owner name: OI FOREST PRODUCTS STS INC., ONE SEAGATE, TOLEDO, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:OWENS-ILLINOIS, INC.;REEL/FRAME:004744/0811 Effective date: 19870323 |