US2706590A

US2706590A - Reinforced double-walled insert for cartons

Info

Publication number: US2706590A
Application number: US339657A
Authority: US
Inventors: Robert M Bergstein
Original assignee: Bergstein Packaging Trust
Current assignee: Bergstein Packaging Trust
Priority date: 1953-03-02
Filing date: 1953-03-02
Publication date: 1955-04-19
Anticipated expiration: 1972-04-19

Description

April 19, 1955 R. M. BERGSTEIN REINFORCED DOUBLE-WALLED INSERT FOR cARToNs Filed March 2. 1953 2 sheets-sheet 1 AIIII'I w 4d. MM2@ q,

19g/IL April 19, 1955 R. M. BERGSTE'IN REINFORCED DOUBLE-WALLED INSERT FOR CARTONS 2 Sheets-Sheet 2 Filed March 2, 1953 MM M 7. m a

ATTORN evs.

United States Patent O REINFORCED DOUBLE-WALLED INSERT FOR CARTONS Application March 2, 1953, Serial No. 339,657

8 Claims. (Cl. 229-14) My invention relates to packaging structures, and more particularly to an insert for use in cartons wherein it is desired to package glassware and the like.

It is a principal object of my invention to provide a simple and inexpensive carton insert which will speed-up the interior packing time, as well as lower its cost.

It is a further object of my invention to provide a double-walled carton insert formed from a one-piece blank in such a fashion that the insert may be erected for placement in an outer carton by a single manipulative step effective to erect all of the walls of the insert.

Let another object of my invention is the provision of a double-walled insert in which at least one of the top walls of the insert is notched to receive the rim of a glass placed therein, and wherein the said top wall is reinforced in the areas lying immediately beyond the notches so as to prevent the rim of the glass from cutting through or tearing the notches and thereby becoming loose and out of position in the carton.

It is a further object of my invention to provide a simple and inexpensive method of folding and gluing the insert to form a knocked-down or flat-folded structure which can be readily shipped to the packager.

These and other objects of my invention which will appear hereinafter or which will be apparent to the skilled worker in the art upon reading these specifications, I accomplish by that construction and arrangement of parts and by those procedures of which I shall now describe an exemplary embodiment.

Reference is made to the accompanying drawings wherein:

Figure 1 is a insert.

Figure 2 is a plan view of the blank of Figure 1 subsequent to the initial folding step.

Figure 3 is a sectional View taken along the line 3 3 of Figure 2.

Figure 4 is a plan view of the blank of Figure 2 following infolding of the reinforcing flaps.

Figure 5 is a sectional view taken along the line 5-5 of Figure 4.

Figure 6 is a plan view of the completed Hat-folded structure with the parts slightly expanded just prior to erection.

Figure 7 is a sectional view taken along the line 7-7 of Figure 6 Figure 8 is a plan view of the fully erected insert.

Figure 9 is a sectional view taken along the line 9-9 of Figure 8.

Figure 10 is a partial perspective view with parts broken away illustrating a tumbler in position in the insert and the insert ready for insertion into an outer carton.

Figure 1l is a vertical sectional view taken through the insert showing a tumbler in position in the insert, and illustrating in dotted lines the manner in which the insert may be placed in an outer carton.

Referring now to Figure l of the drawings, the insert is formed from a blank of suitable paperboard or boxboard cut and scored to provide a bottom wall 1,

inner side walls

2 and 3, top walls 4 and 5,

outer side walls

6 and 7, and

attachment flaps

8 and 9, all in articulation in the manner illustrated. Inner side wall 3 and top wall 5 are provided with cut-out openings 10 adapted to receive the bases of tumblers or similar articles placed in the insert. Similarly, 'inner side wall 2 is provided with cut-out portions 11 adapted to receive and support the rims of the tumblers. The cut-out portions 11 terplan view of the blank for my carton minate in pairs of slots or notches, such as the

notches

12 and 13 extending inwardly in top Wall 4. The pairs of

notches

12 and 13 extend only partially through the top wall 4 and are adapted to receive the rim edges of the tumblers. If desired, the top wall 4 may be extended outwardly in the areas of the cut-out portions 11 to form the projections 14.

A reinforcement ilap 15 is formed in outer side wall 6 adjacent each of the cut-out portions 11, the reinforcement aps being of a length suflcient to extend slightly beyond the outer edges of the pairs of slots or

notches

12 and 13. Preferably the reinforcement aps 15 will lie along the line of articulation between top Wall 4 and outer side wall 6 and have a common line of articulation with the outer side wall. It will be evident, however, that the reinforcement aps may be spaced downwardly from the top edge of the outer side wall and have separate lines of articulation thereto, or may even be formed as tear outs perforated about all four sides.

The blank just described may be conveniently folded and glued on a straight-line gluer by positioning the blank with its reverse side uppermost, i. e., with the side form in the lowermost surface of the bottom wall and the inner surfaces of the side walls uppermost, and by moving the blank in the direction of the arrow A, as seen in Figure 1, the initial step in the folding and gluing of the blank being the application of the strips of

adhesive

16 and 17 to the outer side edges of bottom wall 1. Following the application of the adhesive strips, the blank is infolded along the lines of articulation between the top walls 4 and 5, and the

outer side walls

6 and 7, so as to l bring the blank to the condition illustrated in Figure 2. When the blank is infolded in this manner, edge portions of the

attachment flaps

8 and 9 are brought into contact with the

adhesive strips

16 and 17 and hence into adhesive engagement with the outer side edges of bottom wall 1. The dimensions of the attachment flaps are such that they in effect comprise extension of the bottom wall, the extensions being equal in width to the top walls 4 and 5.

The infolding of the outer side wall 6 results in the exposure of the reinforcement flaps 15, in the manner seen in Figure 2 of the drawings. The exposed reinforcement flaps are next coated with adhesive, as indicated at 18 in Figure 2, and thereafter infolded and brought into adhesive contact with the under surface of top wall 4. As will be apparent from the drawings, the width of the reinforcement aps is such that their outer edges will abut or just slightly overlap the ends of the

notches

12 and 13. The reinforcement aps thus serve to reinforce thed top wall 4 in the area lying beyond the notches 12 an 13.

The completed, fiat-folded insert is seen in Figure 4 of the drawings as it appears at the end of the folding and gluing operations. It is in this condition that the insert is ready for shipment to the packager.

Upon receipt by the packager, the insert is placed in the position illustrated in Figure 6, which is on the side opposite from that shown in Figure 4, and the packager has but to lift upwardly on the opposite side edges of the knock-down structure to cause the entire structure to assume the erected condition seen in Figures 8 and 9 of the drawings. The structure will be held in the erected condition by the outer carton into which it is placed.

As seen in Figure 10 glasses or tumblers, such as the tumbler 20, are placed in the insert with the base supported in the cut-out opening 10 and the rim supported in the cut-out portion 11 with the edge of the rim extending into the

notches

12 and 13. The insert may then be slipped into an outer carton, such as the sleeve 21 seen in Figure 10, or it may be placed in a box having a bottom 22 and a cover 23, as indicated in Figure l1. Also, in many instances it is preferred to provide a carton in which a plurality of the inserts may be placed sideby-side, as for example where it is desired to package eight or twelve glasses in a single carton.

As best seen in Figure ll, the glass or tumbler 20 is supported on the

inner side walls

2 and 3 in the cut-out

openings

10 and 11. The projection 14 extends into the mouth of the glass and the rim edge of the glass, which lies in the

notches

12 and 13, abuts the outer edge of the nfolded reinforcement iiap 15. The reinforcement flap, 1s already indicated, reinforces the top wall 4 in the areas ying beyond the

notches

12 and 13 and hence prevents :he top flap from tearing in the areas lying beyond the notches.

Modifications may, of course, be made in my invention without departing from the spirit of it. For example, while I have taught a procedure for folding and gluing the carton insert wherein the reinforcement aps are infolded separate from the side wall in which they are formed, it is within the spirit of my invention to spot adhesive on the reinforcement fiaps prior to the infolding of the outer side wall panel 6, and thereafter jointly infold the outer side wall and the reinforcement flaps. This, of course, requires a timed gluing mechanism to apply the spots of adhesive to the reinforcement flaps 15 without also covering the intermediate portions of the outer wall, whereas the procedure illustrated in Figure 2 of the drawings enables me to use an ordinary glue wheel for applying the adhesive to the extending reinforcement flaps. Also, it will be evident that the reinforcement flaps may take the form of cut-outs formed wholly within the confines of the outer side wall 6 rather than being articulated to the top wall in the manner disclosed in the drawing. 'Where the reinforcement aps are in the form of cut-outs, they of course will be adapted to break away from the outer side wall upon the erection of the structure.

Having, however, described my invention in an exemplary embodiment, what I desire to secure and protect by Letters Patent is:

1. In an insert for a carton, spaced apart inner and outer side walls connected together along their upper edges by a top wall, notches in said top wall extending inwardly from the inner side edge thereof and terminating short of the outer side edge, reinforcement aps struck from said outer side wall and secured to the under side of said top wall in areas lying beyond the ends of said notches, whereby to reinforce said top wall and prevent it from being torn in the areas beyond the notches.

2. In a carton insert, inner and outer side walls connected together by a top wall, cut-out portions in said inner side wall extending downwardly from the top edge thereof for receiving and supporting the upper end of a tumbler, notches in said top wall extending inwardly therein from the edges of said cut-outs for receiving the rim of the tumbler, said notches terminating short of the opposite side edge of said top wall, and at least one reinforcement flap struck from said outer side wall and secured to the under side of said top wall in the area lying beyond said notches, whereby to reinforce said top wall and prevent the tumbler from tearing it.

3. In a carton insert, inner and outer side walls connected together by a top wall, cut-out portions in said inner side wall extending downwardly from the top edge thereof for receiving and supporting the upper end of a tumbler, notches in said top wall extending inwardly therein from the edges of said cut-outs for receiving the rim of the tumbler, said notches terminating short of the opposite side edge of said top wall, and at least one reinforcement flap struck from said outer side wall and secured to the under side of said top wall in the area lying beyond said notches, whereby to reinforce said top wall and prevent the tumbler from tearing it, said reinforcement flap and said outer side wall being hinged to said top wall along a common line of fold.

4. In a carton insert, inner and outer side walls connected together by a top wall, cut-out portions in said inner side wall extending downwardly from the top edge thereof for receiving and supporting the upper end of a tumbler, notches in said top wall extending inwardly therein from the edges of said cut-outs for receiving the rim of the tumbler, said notches terminating short of the opposite side edge of said top wall, and at least one reinforcement flap struck from said outer side wall and secured to the under side of said top wall in the area lying beyond said notches, whereby to reinforce said top wall and prevent the tumbler from tearing it, said reinforcement flap and said outer side wall being hinged to said top wall along a common line of fold, said top wall including projections between the notches for each cutout portion extending inwardly beyond the plane of the inner side wall for contact with the inner surface of a tumbler supported in the said cut-out portion.

5. An insert for a carton comprising a bottom wall, inner side walls extending upwardly from said bottom wall, top walls extending outwardly from the upper edges of said inner side walls, outer side walls extending downwardly from the outer side edges of said top walls, and attachment aps extending inwardly from the bottom edges of said outer side walls and secured to the under surface of said bottom wall, cut-out openings in one of said inner side Walls extending upwardly through the adjacent top wall for receiving the bases of tumblers placed therein, cut-out portions in the other of said inner side .walls opposite said first mentioned cut-out openings, said cut-out portions extending downwardly from the top Aedges of said last mentioned inner side walls and adapted to receive the upper ends of tumblers placed therein, notches `in the top wall adjacent said last named inner side wall extending inwardly from the edges of said cut-out portlons for receiving the rims of the tumblers, said notches terminating short of the opposite side edges of said last named top wall, and reinforcement aps struck from the outer side wall adjacent said last named top` wall, said reinforcement aps being folded inwardly and secured to the under surface of said last named top wall in areas lying beyond said notches, whereby to reinforce the last named top wall and prevent the rim of the tumbler from tearing beyond the notches.

6. The structure claimed in claim 5 wherein said reinforcement aps and the outer side wall from which they are struck are articulated to the said last named top wall along a common line of articulation.

7. In combination for the purposes described, a carton including a bottom, side and end Walls, and an insert for said carton, said insert including an outer side wall in contact with the side wall of said carton, a top wall extending inwardly from the top edge of said outer side wall, an inner side wall extending downwardly from the opposite s1de edge of said top Wall, and a bottom, a cut-out portion extending downwardly in said inner side wall from the upper edge thereof for receiving and supporting the upper end of a tumber, notches in said top wall extending inwardly from the edge thereof adjacent said cut-out portion for receiving the rim of the tumbler, and a reinforcement flap in the outer side wall of said insert, said reinforcement iiap hinged to said outer side wall along the upper edge thereof and folded inwardly and secured to the under surface of said top wall with a free edge of said flap substantially coinciding with the ends of said notches.

8. A method of forming a reinforced carton insert which comprises providing a blank including a bottom wall, inner side walls articulated to oppsite side edges of said bottom wall, top Walls articulated to the opposite edges of said inner side wall, outer side Walls articulated to the opposite edges of said top walls, attachment flaps articulated to the opposite edges of said outer side walls, and reinforcement flaps formed in one of said outer .side walls and hinged thereto along the line of articulation between said last named outer side wall and the adjacent top Wall, infolding said outer side Walls along their lines of articulation to said top walls so as to bring said attachment flaps into contact with said bottom wall with the interposition of adhesive therebetween but without infolding said reinforcement flaps, thereafter applying adhesive to the extending reinforcement flaps and then infolding said reinforcement aps to bring them into adheslilve engagement with underlying portions of said top wa s.

References Cited in the tile of this patent UNITED STATES PATENTS 1,351,740 Boyd Sept. 7, 1920 2,339,555 Glass Jan. 18, 1944 2,368,753 Elliott et al Feb. 6, 1945 2,426,899 Pantolone Sept. 2, 1947 2,447,243 Freel et al Aug. 17, 1948 2,511,569 Davis et al. Iune 13, 1950 2,593,430 Frankenstein Apr. 22, 1952 FOREIGN PATENTS 393,630 Great Britain June 9, 1933