US3053434A

US3053434A - Bag handle and the like

Info

Publication number: US3053434A
Application number: US755164A
Authority: US
Inventors: Lamar T Atwood
Original assignee: Hudson Pulp and Paper Corp
Current assignee: Georgia Pacific LLC
Priority date: 1958-08-15
Filing date: 1958-08-15
Publication date: 1962-09-11
Anticipated expiration: 1979-09-11
Also published as: GB923814A

Description

.Spt 11, 1962 L. T. ATwooD BAG HANDLE AND THE LIKE Filed Aug. 15, 1958 lanzar Twood United States Patent O iice 3,953,434 Patented Sept. 11, 1962 3,053,434 BAG HANDLE AND TIE LIKE Lamar T. Atwood, South Windham, Maine, assigner to Hudson Pulp & Paper Corp., New York, NSY., a corporation of Maine Filed Aug. 15, 1958, Ser. No. 755,164 Claims. (Cl. 229-54) The present invention relates to handles, and more particularly to handles for use with multiwall sacks or bags.

In the packaging of granular, powdered or pulverized materials, it is of particular importance that the container be suiiciently strong to withstand rough handling during shipment and storage. Accordingly, a multi-Wall bag, which is comprised of a bag tube formed of several plies of paper and closed at both ends, is particularly suited for the packaging of such materials. The handling of a filled multi-wall bag that may weigh more than 200 pounds is particularly awkward to move, because no adequate, simple and inexpensive handle has been available.

It is an object of the present invention to provide a simple yet strong handle for use with multi-wall sacks or bags, and the like. It is another object to provide such a handle which may be easily attached to a lled or unfilled bag or to the tube from which the bag is to be formed. It is a further object to provide a multi-wall bag with a handle attached thereto, wherein the bag is reinforced to prevent tearing when the bag is lifted by the handle. It is still another object to provide a handle attachment for bags which is inexpensive to manufacture and which may be used with the various types and sizes of multiwall bags, sacks .and the like.

In the specication and the accompanying drawings, a preferred embodiment of the present invention in handles and bags is shown and described. It is to be understood that this is not intended to be exhaustive nor a limitation of the invention, but, on the contrary, is given for the purpose of illustration in order that others skilled in the art may fully understand the invention, its principles and the manner of carrying it out.

In the drawings:

FIGURE l is a perspective view of a iilled and closed multiwall bag with handles attached thereto;

FIGURE 2 is a partial sectional view of the arrows 2 2 of FIGURE l;

FIGURE 3 is an enlarged View of the handle 10 in FIGURE l; and,

FIGURE 4 is a View similar to FIGURE 3 but showing another handle.

Referring to FIGURE l of the drawings, a pair of handles are attached to the two side walls of a multiwall sack or bag 12. Sack or bag 12 is of the multiwall type (see FIGURE 2), and is comprised of three

plies

1S, 16 and 17, which are glued together throughout the zones where the handles are attached.

Each of the handles 10 is of the type shown in FIG- URE 3, and is formed by a predetermined length of twisted kraft paper, twine or cord formed into a loop portion 18 and oppositely extending

curved end portions

19 and 20. The handle cord is held in place by a strip 14 of gummed kraft paper or gumrned tape which is tightly adhered to the surface of the bag wall. The handle of the general shape shown has been found to have great holding power which results from the distribution of the force components and the utilization of horizontal and vertical holding forces and force components which are developed along the

curved end portions

19 and 20.

Handles 10 are applied to bag 12 by moistening the adhesive surface of the gummed strip 14, and then pressing the adhesive surface against the outer surface of the bag. The adhesive has sucient initial tack to hold the handle in place and, when the adhesive dries, the handle is iirmly attached to the bag.

As indicated above, during manufacture of the bag, adhesive is applied between each ply and the next, so as to securely attach the -plies together and, in effect, attach the handle to each of the plies throughout and beyond the edges of strip 14. Thus, when the bag is lifted by the two handles, the holding forces which are created are distributed vertically and horizontally, as referred to above, and are `also distributed to the various plies of the bag. In this manner, all of the plies act together with the two handles providing a unitary supporting structure for the entire body of product within the bag. The particular shape of the handle and curvature of the

end portions

19 and 20 may be varied readily to provide for other conditions of use. However, the curvature shown in the drawing has particular advantage.

The specific handle of the illustrative embodiment is formed by a length of cord l5 inches long which is formed into a somewhat sinusoidal curve. The loop portion is 5 inches long in the finished handle. That is, referring to FIGURE 3, the distance between points 3@ and 32 is 5 inches. The loop extends a distance of the order of 2% inches from the edge of strip 14 to the apex 34 of the loop. The ends of the loop are divergent, so that the end portions are connected to the loop along two lines which converge toward the general zone where the handle is grasped. In this embodiment, the loop ends are at an angle of the order of 65 from the adjacent edge of strip 14, .and the end portions diverge from each other throughout. It should be noted that the extreme ends 36 and 3S of the cord are in exact alignment and a tangent to each curve at these extreme ends is parallel to the edge of the strip 14. These extreme ends are adjacent the lower edge of the strip and the upper edge of the strip is substantially half way between the lower ends of the cord and the top of the loop 34. The strip 14 is 8% long and the hand grasp loop 34 between the points 3i? and 32 is 5 long. Hence, the distance between each of the

points

30 and 32 and the adjacent end ofthe strip is 1% As best shown in FIGURE 2, the end portions of the cord are flattened so that the cord is somewhat oval in cross section, with one flat surface being held tightly against the outer wall of the bag. The strip 14 is tightly pressed and crimped against the cord throughout the entire end portions 19' and 20. This construction is obtained by exerting pressure from the opposite sides of the unfilled bag when the handles are applied. The wetted adhesive is caused to thoroughly impregnate the adjacent surfaces of the cord and the side of the bag. The adhesive then dries and provides the secure attach ment, as discussed above.

In the embodiment of FIGURE 4, the handle 40 is identical with that of FIGURES 1 to 3, except that the cord 42 is formed into a symmetrical curve which can be considered a true sinusoidal curve. Also, it will be noted that the

extreme ends

44 and 46 of the cord are at substantially the longitudinal center line of the strip 48. It is contemplated in accordance with the present invention that the exact form of the curve of the cord is varied to suit the conditions of use which are contemplated.

The flattened end portions of the cord are tightly attached to the strip, but they are free from direct attachment to the surface of the bag wall 17 (see FIGURE 2). Hence, the lift forces and the force components thereof are transmitted from the cord to the strip and thence to the walls of the bags.

As many possible embodiments may be made in the above invention and as many changes might be made in the embodiments above set forth, it is to be understood that all matter hereinbefore set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in the limiting sense.

I claim:

1. A paper bag having side walls and side edges which extend longitudinally of the bag, and a pair of handles attached to the outside of the bag adjacent and respectively upon the opposite sides of the central portion of one of said side edges, each of said handles comprising a patch of sheet material and a cord, said patch having a longitudinal edge substantially parallel with the last-men tioncd side edge of the bag and having one of its surfaces attached to the bag wall throughout the area of its contact, said cord having a central loop portion projecting away from the bag wall in the general plane of said patch at said longitudinal edge of said patch, said cord having two end portions integral with and in alignment with the ends of said loop portion and positioned between said patch and the bag wall and being tightly adhered to said patch throughout the entire contacting surfaces, each of the portions of said cord at the juncture between said loop portion and an end portion being securely held at an acute angle to said longitudinal edge of said patch, and said end portions of the cord diverging therefrom along continuous curves and terminating at extreme ends which are in substantial alignment.

2. A bag as described in claim 1 which is formed from a tube and has a plurality of plies, and adhesive attaching the plies together co-extensive with the areas of attachment of said patches.

3. A bag as described in claim 1, wherein each of said acute angles is of the order of 65, and wherein each of said cords is substantially sinusoidal in shape.

4. A bag as described in claim 1, wherein said patch is formed of a rectangular strip of paper.

5. A bag as described in claim 1, wherein each of said cords is substantially cylindrical throughout its loop portion .and has said end portions flattened so as to increase the area of attachment to its patch.

References Cited in the tile of this patent UNITED STATES PATENTS 1,691,782 Morrill et al. Nov. l2, 1928 2,075,672 Stark Mar. 30, 1937 2,150,043 Stark Mar. 7, 1939 2,491,929 Orchard Dec. 20, 1949 2,625,318 Ross Ian. 13, 1953 2,987,239 Atwood June 6, 1961 FOREIGN PATENTS 54,256 Denmark Ian. 17, 1938