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Publication numberUS1527021 A
Publication typeGrant
Publication dateFeb 17, 1925
Filing dateOct 6, 1919
Priority dateOct 6, 1919
Publication numberUS 1527021 A, US 1527021A, US-A-1527021, US1527021 A, US1527021A
InventorsKurt Wandel
Original AssigneeSafepack Mills
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Reenforced carton
US 1527021 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


Inve?2%?".' Kari Z/arzaZeZ w Patented Feb. 17, 1925.



nnnnroncnn CARTON.

To a]? whom it may concern:-

Be it known that I, Kmrr IVA-Norm, a citizen of lVurtemberg, and resident of Franklin. county of Xorfolk, Commonwealth of Massachusetts, have invented an Improvement in Reenforced Cartons, of which the following description, in connection with the accompanying drawings, is a specification. like characters on the drawings representing like parts in each of the several views.

This invention relates to cartons or boxes produced from a piece of paper or corrugated paper-board or card-board or the like slitted and folded according to common practice to produce a one-piece box, though the invention is not to be understood as necessarily limited to one-piece box constructions. 'In boxes thus produced from folded paper stock it is well known that the weakest points in the box and where it is most apt to tear or break down are at the folded lateral corners where strains are most apt to be localized and where the fold and crease in the paper stock render it less resistant. The object of the present invention is to provide a box made of paper or paper-board or like stock specially reenforced with strengthening filaments that may be embedded therein and extending around the folded box corners so that these are greatly strengthened and made capable of resisting and withstanding any strains apt to be imposed thereon. The foregoing and other objects and advantages of the invention will more fully appear fromthe following detailed description, and the distinctive features of novelty will be pointed out in the appended claims.

Referring to the drawings:

Fig. 1 is a plan view showing a blank of paper or paper-board stock formed in readi ness for folding to produce a one-piece box and reenforced in accordance with my in- 45 vention;

Fig. 2 is a perspective view of the box produced in accordance with my invention and illustrating the reinforcing feature;

Fig. 3 is a perspective view illustrating more particularly a manner in which the reinforcing filaments may be applied to the corrugated paper-board-stock;

Fig. 4' is a perspective view showing a modified form of the invention; and

Fig. 5 is a perspective view illustrating more serviceable.

more particularly the character of reinforcing. means in the form of Fig.4. Theblank 10 is produced of a single piece of paper or paper-board stock as usual creased or otherwise adapted to be folded along the lines 10*, 10 10 to produce the sides of the box and slitted inwardly from the sides thereof as indicated at 10, 10 to produce flaps adapted to be folded in any overlapping relation to form the bottom and top respectively of the box. One end of this blank is shown as equipped with a small projecting flap 10 adapted for folding over the abut-ting edgeat the other end of the blank when folded thereagainst to secure the box structure together all in accordance with the usual practice. In accordance with my invention reenforcing filaments 11, 12 are applied to the blank 10 running lengthwise thereof and just within the ends of the slits 10", 10*, these filaments in the case of duplex or multiplex paper stocks as commonly employed for mak1n boxes being applied between the layers 0 the blank and embedded in the adhesive binder thereof. When the box blank thus constituted is folded to produce a box the filaments 11, 12 will thus extend around corners of the box at top and bottom, i. e., at the points where tearing and breaking down of the box is most apt to occur, im-; parting thus a strengthening and resistant property to the box andmaking it thus The projecting extremities 11 12 of the filaments at the ends of the blank may be secured together by tying or, otherwise indicated at 13 so that all the corners of the box are correspondingly reenforced. The filaments 11, 12 maybe either of metallic wires or of textile threads and 95 they may be located either as indicated within the extremities of the slits 10, 10 only, or they may be applied throughout the extent of the stock if desired. In Fig. i 3 I show a usual form of three-ply paper- 100 board stock 10 adapted for the present purpose, and in this the reenforcing filaments 11 may be embedded between the intermediate corrugated layer and the outer. plain layers.

In Figs. 4 and 5 I show a form of the inv ention wherein instead of the filaments 11,

12, one or more flat thin reenforcing strips W which may be of tin-plate or the like may be employed to reinforce the corners of the 1 i box as described. Inthis case a three-ply paper stock with a corrugated intermediate layer is shown and between the plies thereof one or more thin flat strips of metal may be applied, there being as shown two of these strips 110 at the top of the box and one such strip at the bottom of the box. The ends of these strips Where they come together in overlapping relation may be riveted'or otherwise secured together as indicated at so that all the corners of the box are properly reenforced. The reference herein and in the appended claims to paper or paper-board stock as the material of which the box is made is to be understood as only illustrative and intended to V typify any suitable sheet stock of which cartons or boxes may be made by folding the same after a manner generally as set forth.

I am aware that the invention maybe embodied in other specific forms without departing from thespirit or essential attri butes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive, reference being hadto the appended claims rather than to the foregoing description to indicate the scope of the invention.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

A box or carton produced of a single sheet of paper stock slitted on both sides at intervals to produce flaps for folding i ward to form the top and bottom of the box, with reinforcing filaments embedded therein extending longw-ise of the blank and localized directly inward of the inner ends of said slits, the extremities of said filaments projecting from the sheet and securing the abutting edges of the sheet together at the box corner.

In testimony whereof, I have signed my name to this specification.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2673678 *Aug 17, 1949Mar 30, 1954Wilbro CorpPacking case
US2863597 *Aug 10, 1956Dec 9, 1958Int Paper CoReinforced corrugated paperboard container and joint therefor
US3189175 *Sep 17, 1962Jun 15, 1965Int Paper CoBrick packaging device and method
US3322321 *Apr 12, 1965May 30, 1967Int Paper CoContainer
US3860305 *May 29, 1973Jan 14, 1975Walter George Enterprises IncPoint of purchase display and storage rack
US4702408 *May 23, 1986Oct 27, 1987The Mead CorporationBulk bin
US4793550 *Nov 2, 1987Dec 27, 1988Container Corporation Of CanadaReinforced carton
US4804138 *Apr 29, 1988Feb 14, 1989International Paper CompanyReinforced flange top lifting carton
US5447270 *Dec 22, 1994Sep 5, 1995Westvaco CorporationLaminations for improved container compressive strength
US8469258 *Dec 2, 2011Jun 25, 2013International Paper CompanyReinforced cross-laminated bulk container
US8490858 *Apr 7, 2010Jul 23, 2013International Paper CompanyReinforced cross-laminated bulk container
US20110248080 *Apr 7, 2010Oct 13, 2011International Paper CompanyReinforced Cross-Laminated Bulk Container
US20120104083 *Dec 2, 2011May 3, 2012International Paper CompanyReinforced Cross-Laminated Bulk Container
US20140183253 *Dec 28, 2012Jul 3, 2014Howard RappReinforce corrugated cardboard box
EP1415933A2 *Oct 28, 2003May 6, 2004Kappa Wellpappe Wiesloch, Zweigniederlassung der Kappa Holfelder Werke GmbH & Co. KGStrengthened Packaging
U.S. Classification229/199
International ClassificationB65D5/44
Cooperative ClassificationB65D5/441
European ClassificationB65D5/44B