US3669339A

US3669339A - Container having multi-ply bottom and upright walls

Info

Publication number: US3669339A
Application number: US133614A
Authority: US
Inventors: Paul Schilling
Original assignee: Crown Zellerbach Corp
Current assignee: Gaylord Container Corp; Fort James Corp
Priority date: 1971-04-13
Filing date: 1971-04-13
Publication date: 1972-06-13
Anticipated expiration: 1989-06-13

Abstract

A container or box made of two integral blanks of flexible material is formed with panels hingedly connected together, which provide walls all of multi-ply thickness with each wall of one pair of opposite walls comprising spaced apart plies forming an air space therebetween. The bottom wall is of at least three ply thickness to provide strength and cushioning. Anchor flaps hingedly connected to at least some of the panels of each blank secure the container into a substantially rigid structure. Stitching in the form of staples secure various of the anchoring flaps and wall plies together.

Description

United States Patent Schilling 1 .June 13, 1972 [54] CONTAINER HAVING MULTI-PLY 2,778,560 1/1957 Pfeiffer ..229/23 AB X BOTTOM AND UPRIGHT WALLS 2,791,365 5/1957 Cohen.... ..229/23 R 3,335,934 8/1967 Davis ..229/23 R [72] Inventor: Paul Schilling, Bogalusa, La.v

3 A C b h Co rafion San Fran Primary ExaminerDavis MOOI' head [7 ssignee ci s'gg canf m Attorney-Stanley Bialos, Corwin R. Horton and Thomas R.

Lampe [22] Filed: April 13, 1971 v 21 Appl. No.2 133,614 [57] ABSTRACT A container or box made of two integral blanks of flexible material is formed with panelshingedly connected together, 8|. 0A0 which provide walls a of mulmply thickness with each wall of one p of opposite walls comprising spaced apart plies form [58] Field of Search ..229/[6 R, 23 R, 23 A, 23 AB g an air Space merebetween. The bottom wall is oflal least three ply thickness to provide strength and cushioning; [56] References Cited Anchor flaps hingedly connected to at least some of the panels UNITED STATES PATENTS of each blank secure the container into a substantially rigid structure. Stitching in the form of staples secure various of the 1,906,622 5/1933 Komdolf ..229/23 A anchoring fl and Wall plies togcthen 2,362,520 11/1944 Zalkind ..239/16 R X 2,735,607 2/1956 Wasyluka ..229/23 A UX 7 Claim, 9 Drawing Figures PAIENTEIJJun 13 1912 3,669,339

sum 1 BF 2 INVENTOR PAUL SCHILLING BY= M w. MW

W MM ATTORNEYS INVENTOR= SHEET 2 BF 2 PAUL SCHILLING V HP'ATEIITHIJIIII 13 m2 CONTAINER HAVING MULTI-PLY BOTTOM AND UPRIGHT WALLS This invention relates to containers made of flexible material, advantageously solid fiber paperboard, and which are formed from blanks of such paperboard providing a multi-ply wall thickness throughout the entire container.

SUMMARY AND OBJECTS Summarizing the invention, an improved box or container is made of two blanks of flexible material, advantageously solid paperboard. The blanks are suitably scored along hinge connection lines to form a series of hingedly connected panels which when the blanks are nested together provide pairs of opposite multi-ply walls. The panels of a first one of the blanks are so connected as to form a pair of opposite walls in which the plies are spaced apart to provide a stacking and supporting ledge; and also such blank has end panels which form an inner ply of a substantially three ply bottom wall.

A second blank is also formed of hingedly connected panels which provide a second pair of opposite multi-ply walls; and anchoring flaps are provided on at least some of the panels of both blanks for enabling the box to be secured into a relatively rigid structure by means of stitching, advantageously staples.

The invention has as its objects, among others, the provision of an improved container or box of flexible material, advantageously paperboard, for the transportation and storage of various types of objects, such as glass beverage bottles, which is of simple and economical but yet strong construction, and which can be easily assembled from two integral or single blanks of material. Other objects of the invention will become apparent from the following detailed description and accompanying drawings, in which:

DESCRIPTION OF FIGURES FIG. I is an isometric view of the set-up container;

FIG. 2 is a plan view of one of the blanks from which the container is formed, the view being on a reduced scale;

FIG. 3 is a similar plan view of a second blank, from which the container is formed when nested with the blank of FIG. 2;

FIG. 4 is a top plan view of the container;

FIG. 5 is a side elevational view looking in the direction of arrow Sin FIG. 4;

FIG. 6 is an enlarged fragmentary corner section taken in a plane indicated by line 6--6 in FIG. 7 and also in FIG. 5;

FIG. 7 is an enlarged vertical section taken in a plane indicated by line 7-7 in FIG. 4;

FIG. 8 is an enlarged vertical section taken in a plane indicated by line 88 in FIG. 4;

FIG. 9 is a horizontal section taken in a plane indicated by line 9-9 in FIG. 7, and also in FIG. 5.

DETAILED DESCRIPTION The container or box hereof is advantageously formed of solid fiber paperboard although insofar as its principle of construction is concerned, any other flexible sheet material that can be suitably scored to form hinge connection lines, may be used. The solid fiber paperboard is preferably of about 0.090 caliper thickness, but any other suitable thickness may be utilized. It is primarily intended for use as a substitute for wood boxes that are commonly employed in the packaging of beverages contained in glass bottles, but it may be used for any other purpose.

Referring particularly to FIGS. 2 and 3 in which the parts are drawn substantially to scale, the container is formed of two integral or single blanks of material. A first blank comprises a central panel 2 which forms a full bottom intermediate ply of the set-up container illustrated in FIG. 1. The blank is suitably scored by transversely extending score lines 3, which because of the character of the material are conventional double score lines, to provide a series of panels connected to each of the opposite ends of central panel 2. Such panels at each end of panel 2 comprise in the order named, an outer wall ply 4 of a first pair of opposite walls which in the container illustrated may be called end walls, a connecting portion 6, an inner-wall ply 7 of such wall and a partial bottom inner ply 8.

Each connecting portion 6 is in the form of a flat panel which when the container is set-up, separates an inner wall ply 7 from an outer wall ply 4 to provide a stacking ledge, and enhance strength. Also, panel 6 in separating such inner and

outer wall plies

7 and 4, respectively, provides an air space therebetween.

Extending along each side of central panel 2 is an anchoring flap 9 which is hingedly connected to the panel along a score line 11, and which is employed for securing container parts rigidly together in a manner to be described. Likewise, an anchoring flap 12 is hingedly connected along a score line 13 to each side of inner wall ply panel 7. The score lines 11 an 13 are also double score lines.

FIG. 2 illustrates a second blank which forms the completed container when the blank of FIG. 3 is nested therein. Such second blank comprises a central panel 14 which forms a full bottom outer ply of the container on which full bottom intermediate ply 2 of the blank of FIG. 3 engages. A pair of hingedly connected panels is connected at each side of central panel 14, including a panel 16 hingedly connected to panel 14 along double score line 17, and which forms an outer wall ply of a second pair of opposite walls which in the embodiment illustrated are sidewalls. Hingedly connected along double score line 18 is a panel 19 which forms an inner wall ply of a sidewall. Anchoring flaps 21 are hingedly connected along each end of central panel 14; and anchoring flaps 22 are also hingedly connected along each end of outer wall ply panel 16.

In the container set-up from the described blanks, the central panel 2 of the blank of FIG. 3 is positioned over the central panel 14 of the blank of FIG. 2, and the various panels and anchoring flaps are turned at a right angle to their hinge connected lines, to form the pairs of opposite walls all of multi-ply thickness which are secured together by means of stitching, such as staples 23 as is illustrated. in this connection, each anchoring flap 9 of full bottom intermediate ply 2 is ositioned between the inner and

outer plies

19 and 16, respectively, of a sidewall and are stapled to such inner and outer plies. Anchoring flap 12 is also secured by staples 23 between the inner and

outer plies

19 and 16, respectively, of a sidewall.

An anchoring flap 21 is turned to overlie the outer ply 4 of each end wall, and is stapled thereto. The respective anchoring flaps 22 on the outer plies 16 of the side walls are turned around the upright comers of the outer plies 4 of the end walls and stapled thereto. It will be noted that each flap 22 overlaps a flap 21, thus providing at least three-ply thickness at the lower part of each corner to enhance strength; and because each flap 22 overlaps a flap 21, there are no raw edges exposed directly at a corner. This enhances strength as the edges of each flap 22 are spaced inwardly from a comer. Although the described anchoring flap arrangement is advantageous for maximum strength, the number of anchoring flaps could be less, but it is necessary that at least some of the panels be provided with anchoring flaps.

Each outer wall ply 4 is slit to provide a flap 24 hingedly connected along one edge to the panel 4, to provide a hand hold hole 26 as shown in FIGS. 1 and 7; the flap being upturned and stapled to the inner face of such outer wall ply 4.

A triple ply bottom is formed by virtue of full bottom outer ply 14, full bottom intermediate ply 2, and the partial bottom ply panels 8. Panels 8 are approximately half the length of the bottom and their opposed edges are substantially in abutment along line 27, as indicated in FIGS. 1 and 4. All the plies of the bottom are stapled together thus providing a strong bottom. In this connection, although the panels 8 are each approximately half the length of the bottom wall to abut along a center line, one may be made longer and the other shorter if so desired. The triple ply bottom provides cushioning to prevent breakage of frangible material, such as glass containers for which the container hereof is adapted, in addition to strength. If further cushioning is desired, another ply may be added as a separate sheet, but the at least triple-ply bottom has been found entirely suitable for the purposes described.

The flat ledge panels 6 are desirable because they facilitate stacking. Also, theyenable the container to be handled in packaging the same with product, in the same manner as wood crates heretofor employed. This is so because these crates have their opposite end walls of thicker board than the sidewalls, which is comparable to the thickness of the end walls of the instant containers.

It will be noted that the panels are of such dimensions that the sidewalls andend walls are of substantially. the same height. Desirably, thehinge connected lines 18 are such as to provide a narrow flat ledge 28 as illustrated in FIGS.v 1 and 8; and preferably a metal reinforcing rim 29 is held between the plies along the entire upper edges of the container; the rim having outwardly extending corners 31 which engage the upper edges of outer ply 16 at the corners thereof.

The container may be of any suitable size desired. In the embodiment of the invention illustrated, it has an overall outside length of about l7 inches, an overall inside length of about inches; thus each stacking ledge 6 has a width of about 1 /4 inch. The overall outside width is about 11 inches, while the overall inside width is about 11 inches, so that flat side ledges 28 are about three-sixteenths inch in width. The height of the walls is about 6 V2 inches.

I claim:

1. A container comprising a multi-ply bottom wall; a first pair of upright opposite multi-ply walls connected to said bottom wall; a second pair of upright opposite multi-ply walls connected to said bottom wall; said first pair of walls being part of a first blank of flexible material having a plurality of panels integrally connected together along hinge connection lines, a central one of such panels providing a full bottom intermediate ply of said bottom wall, and a series of panels connected to each of opposite ends of said central panel comprising in the order named an outer wall ply, a connecting portion,

an inner wall ply connected to said connecting portion, and a partial bottom inner ply of said bottom wall overlying said fullbottom intermediate ply; said second pair of opposite walls also being part of a second blank of flexible material having a plurality of panels integrally connected together along hinge 1 connection lines, a central panel of said second blank providing a full bottom outer ply of said bottom wall, and panels connected to each of opposite sides of said central panel of the second blank comprising in the order named an outer ply of a wall of said second pair and an inner ply of such wall; anchoring flaps hingedly connected to at least some of the panels of each blank; and means securing said anchoring flaps and wall plys together.

2. The container of claim I wherein each of said connecting portions between said outer and inner'wali plies of said first blank is a panel which provides a flat stacking ledge at the top of each of said first pair of walls and spaces apart the plies of each of said walls to form an air space therebetween, and the partial bottom inner plies of said first blank which overlies said full bottom intermediate ply are in substantial abutment to provide at least a triple ply bottom wall.

3. The container of claim 1 wherein said anchoring flaps include a flap at each side of each of the inner wall plies of said first blank secured between an inner and outer ply of a wall of said second pair of walls, a flap at each side of the full bottom panel of said first blank also secured between inner and outer plies of a wall of said second pair of walls, a flap at each end of said full bottom outer ply of said second blank secured to an outer ply of a wall of said first pair, and a flap at each end of each outer wall ply of said second blank secured to an outer ply of a wall of a first pair adjacent an upright corner thereof.

4. The container of claim 3 wherein the securing means are staples, and the flap at each end of each outer wall ply of the second blank overlaps the flap on said full bottom panel of said second blank at the lower portion of an upright comer.

5. The container of claim 2 wherein staples are the securing means, and include staples securing together all the plies of said triple-ply bottom wall.

6. A container comprising a multi-ply bottom wall; a first pair of u right opposite multi-ply walls connected to said bottom wal a second pair of upright opposite multr-ply walls connected to said bottom wall; said first pair of walls being part of a first blank of flexible material having a plurality of panels integrally connected together along hinge connection lines, a central one of such panels providing a full bottom intermediate ply of said bottom wall, and a series of panels connected to each of opposite ends of said central panel comprising in the order named an outer wall ply, a flat connecting panel providing a top stacking ledge, an inner wall ply connected to said stacking ledge, and a partial bottom inner ply of said bottom wall overlying said full bottom intermediate ply; said second pair of opposite walls also being part of a second blank of flexible material having a plurality of panels integrally connected together along hinge connection lines, a central panel of said second blank providing a full bottom outer ply of said bottom wall, and panels connected to each of opposite sides of said central panel of the second blank comprising in the order named an outer ply of a wall of said second pair and an inner ply of such wall; the partial bottom inner plies of said first blank being in substantial abutment over the full bottom intermediate ply to provide at least a triple ply bottom wall, anchoring flaps hingedly connected to at least some of the panels of each blank; and means securing said anchoring flaps and wall plys together including staples securing all the bottom wall plies together.

7. The container of claim 6 wherein said anchoring flaps in clude a flap at each side of each of the inner wall plies of said first blank secured between an inner and outer ply of a wall of said second pair of walls, a flap at each side of the full bottom panel of said first blank also secured between inner and outer plies of a wall of said second pair of walls, a flap at each end of said full bottom outer ply of said second blank secured to an outer ply of a wall of said first pair, and a flap at each end of each outer wall ply of said second blank secured to an outer ply of a wall of a first pair adjacent an upright corner thereof.

Claims

1. A container comprising a multi-ply bottom wall; a first pair of upright opposite multi-ply walls connected to said bottom wall; a second pair of upright opposite multi-ply walls connected to said bottom wall; said first pair of walls being part of a first blank of flexible material having a plurality of panels integrally connected together along hinge connection lines, a central one of such panels providing a full bottom intermediate ply of said bottom wall, and a series of panels connected to each of opposite ends of said central panel comprising in the order named an outer wall ply, a connecting portion, an inner wall ply connected to said connecting portion, and a partial bottom inner ply of said bottom wall overlying said full bottom intermediate ply; said second pair of opposite walls also being part of a second blank of flexible material having a plurality of panels integrally connected together along hinge connection lines, a central panel of said second blank providing a full bottom outer ply of said bottom walL, and panels connected to each of opposite sides of said central panel of the second blank comprising in the order named an outer ply of a wall of said second pair and an inner ply of such wall; anchoring flaps hingedly connected to at least some of the panels of each blank; and means securing said anchoring flaps and wall plys together.

2. The container of claim 1 wherein each of said connecting portions between said outer and inner wall plies of said first blank is a panel which provides a flat stacking ledge at the top of each of said first pair of walls and spaces apart the plies of each of said walls to form an air space therebetween, and the partial bottom inner plies of said first blank which overlies said full bottom intermediate ply are in substantial abutment to provide at least a triple ply bottom wall.

4. The container of claim 3 wherein the securing means are staples, and the flap at each end of each outer wall ply of the second blank overlaps the flap on said full bottom panel of said second blank at the lower portion of an upright corner.

6. A container comprising a multi-ply bottom wall; a first pair of upright opposite multi-ply walls connected to said bottom wall; a second pair of upright opposite multi-ply walls connected to said bottom wall; said first pair of walls being part of a first blank of flexible material having a plurality of panels integrally connected together along hinge connection lines, a central one of such panels providing a full bottom intermediate ply of said bottom wall, and a series of panels connected to each of opposite ends of said central panel comprising in the order named an outer wall ply, a flat connecting panel providing a top stacking ledge, an inner wall ply connected to said stacking ledge, and a partial bottom inner ply of said bottom wall overlying said full bottom intermediate ply; said second pair of opposite walls also being part of a second blank of flexible material having a plurality of panels integrally connected together along hinge connection lines, a central panel of said second blank providing a full bottom outer ply of said bottom wall, and panels connected to each of opposite sides of said central panel of the second blank comprising in the order named an outer ply of a wall of said second pair and an inner ply of such wall; the partial bottom inner plies of said first blank being in substantial abutment over the full bottom intermediate ply to provide at least a triple ply bottom wall, anchoring flaps hingedly connected to at least some of the panels of each blank; and means securing said anchoring flaps and wall plys together including staples securing all the bottom wall plies together.

7. The container of claim 6 wherein said anchoring flaps include a flap at each side of each of the inner wall plies of said first blank secured between an inner and outer ply of a wall of said second pair of walls, a flap at each side of the full bottom panel of said first blank also secured between inner and outer plies of a wall of said second pair of walls, a flap at each end of said full bottom outer ply of said second blank secured to an outer ply of a wall of said first pair, and a flap at each end of each outer wall ply of saiD second blank secured to an outer ply of a wall of a first pair adjacent an upright corner thereof.