US3207419A

US3207419A - Reinforced bag

Info

Publication number: US3207419A
Application number: US363234A
Authority: US
Inventors: Clifford R Mack
Original assignee: Individual
Current assignee: Individual
Priority date: 1961-06-30
Filing date: 1964-04-28
Publication date: 1965-09-21
Anticipated expiration: 1982-09-21

Description

Sept. 21, 1965 c. R. MA(-ZK 3,207,419

REINFORCED BAG Original Filed June 50, 1961 FIG. I -4 l x J I 4 7 I l 8 I l l A 7 s l 1 i i l I L4 r I l 4 i I -11 1 FIG.3 FIG. 4 1 ,6 I s --4\ ,8

g /,*--7 I 4 {9 52 INVENTOR.

CLIFFORD R. MACK ATTORNEYS United States Patent 3,207,419 REINFORCED BAG Ciitford R. Mack, 66 Tomac Ave., Old Greenwich, Conn. Original application June 30, 1961, Ser. No. 124,287, now Patent No. 3,130,896, dated Apr. 28, 1964. Divided and this application Apr. 28, 1964, Ser. No. 363,234

. 7 Claims. (Cl. 22955) The present application is a division of my copending application Serial No. 124,287, filed June 30, 1961, and entitled Reinforced Bag, now Patent 3,130,896, granted April 28, 1964, which application in turn is a continuation-impart of my copending application Serial No. 75,- 206, filed December 12, 1960, now abandoned, and entitled Reinforced Bag.

This invention relates to bag constructions, and more particularly to an improved bag construction which affords increased packaging protection along the edges of the bag, and is particularly adapted for use as a shipping container.

Many articles which are subject to damage in shipment, such as mattresses, box springs, plaster board, fiber board, prefinished plywood, laminated plastic sheets, or other items, both large and small, call for reinforced packaging protection along their edges, which are especially subject to injury. It is to the provision of an improved reinforced or padded bag affording increased edge protection that my invention is particularly directed. Further objects and advantages of the invention will become apparent as the following description proceeds.

In general, this invention is incorporated in a bag constructed according to the aforementioned copending application, essentially comprising a tube made up of a pair of opposed side panels and a pair of opposed face panels. The tube may be formed of a single face panel sheet and another sheet folded to integrally form an opposed face panel terminating laterally in opposed side panels; or alternatively, each of the face and side panels may be formed of a separate sheet. In the latter case, the lateral margins of both face panel sheets terminate substantially at the outer lateral extremities of the margin portions of the side panels and are secured in overlying relationship to these margin portions, to afford a double thickness of packaging material along the side edges of the bag. In the former case, the double thickness is afforded only along the lateral margins of the single face panel sheet.

To afford further strength and protection to the longitudinal edges of the bag, particularly the bottom of the bag, the present invention contemplates that the side panels are formed with extensions folded transversely to the bag, and overlapping and secured to the adjacent longitudinal margins of the face panels. This results in a greater thickness of packaging material over the longitudinal edges of the face panels than is available through conventional methods. Preferably, the side panel extension also overlap and are secured to one another, to form a reinforced, secure end closure of the bag.

While the specification concludes with claims particularly pointing out and distinctly claiming the subject matter which I regard as my invention, it is believed that the invention will be more clearly understood from the following detailed description of a preferred embodiment thereof, referring to the accompanying drawing, in which:

FIG. 1 is a pictorial view of elements of a bag according to one embodiment of the invention, shown in a partially assembled condition;

FIG. 2 is a sectional plan view of the completed bag;

FIG. 3 is a view in elevation; and

FIG. 4 is a sectional plan view of an embodiment formed of a single face panel sheet and another sheet folded to form a face panel and two side panels.

ice

Referring to FIGS. 1-3, the invention may preferably be embodied in a bag comprising a pair of opposed gusset side panel sheets 1 and a pair of opposed face panel sheets 2 each originally separate from the others. One of the face panels has been omitted from FIG. 1 to more clearly illustrate the construction. The face panels have top and bottom, or longitudinal edges, and side, or lateral edges. The side panels 1 are creased to form conventional gussets 3, which permit the bag conveniently to be folded and stored prior to use. The side panels are formed with margin portions 4 which are folded to extend laterally of the bag and parallel to the face panels, and the face panels 2 overlie these margins and terminate at their outer extremities at the lateral edges of the bag. The lateral margins of the face panels are secured to corresponding ones of the margin portions 4 by pasting, stitching, or in any well-known manner suitable to the particular material and intended application of the bag. A double layer of packaging material is thus formed over the lateral edges of the composite bag.

In order to afford a multiple packaging layer over the longitudinal edge margins of the face panels at the bottom end of the bag, and to form a secure bottom end closure, I form the side panels 1 with extensions 5 which initially project downwardly beyond the longitudinal bottom edges of the face panels, in the incomplete stage of construction shown in FIG. 1. The extensions 5 are formed with margin portions 6, which are initially folded as shown, to extend laterally of the bag and parallel to the face panels. The

margin portions

4 and 6 are notched or cut away at 7 and 8, respectively, to permit the extensions 5 to be folded upwardly and transversely of the bag into overlapping engagement with the face panels, as shown in FIG. 3. The extensions are pasted or otherwise suitably secured one to the other, and to the interior surfaces of the face panels. The margins adjacent the lower edges 9 of the extensions overlap to form a secure bottom end closure, and to brace apart the bottom margins of the face panel relative to one another.

Referring to FIG. 4, a modified embodiment is shown in which pairs of opposed side panels and one of the face panels are formed from a single sheet, and one of the face panels is formed from a separate sheet. Reinforcing protection is thus afforded only along the lateral margins of one face of the bag. In this construction, two side panels 50 and one face panel 52 are formed from a single sheet, with margin portions 54 overlying the lateral margins of a face panel sheet 56, which terminates at the outer lateral extremities of the side panels. The side panels may include inwardly folded extensions, similar to extensions 5, which are secured to, and reinforce, the longitudinal margins of the face panels to form a bottom end closure and to afford a multiple packaging layer over the longitudinal edge margins of the face panels at the bottom end of the bag.

The use of separate face and side panel sheets facilitates the optional use of different materials in these panels. Furthermore, the improved bags may conveniently be formed from assemblies of continuous rolls of side panelling with pre-cut face panels; this permits printing or lithography of the face panels in a fiat condition prior to assembly of the bags. The difficulty of registering cuts with previously printed material on a continuous roll of face panelling may thus be eliminated, and the printing or lithography simplified. Alternatively, however, the bags may be cut from assemblies of continuous rolls of side and face panels. My improved construction is applicable to various packaging materials, including plastics, papers, and textiles, or to combinations of such differing materials.

While I have shown and described preferred embodiments of my invention by way of illustration, it will be 3, apparent to those skilled in the art that various changes and modifications may be made without departing from the true spirit and scope of the invention.

Having thus describedmy invention, what I claim and desire to secure by Letters Patent of the United States is:

1. A bag comprising a pair of opposed side panels, and a pair of opposed face panels, said side panels formed with longitudinally-extending margin portions overlying corresponding lateral margins of said face panels and secured thereto, said side panels formed with extensions folded transversely to the bag, each of said extensions overlapping and secured to the other extension and adjacent longitudinal margins of said face panels to form an end closure of the bag.

2. A bag comprising a pair of opposed side panels and a pair of opposed face panels, said side panels formed with extensions including a body portion comprising a continuation of the side panel and folded transversely to the bag and including side margin portions folded to extend parallel to the corresponding side margins of the face panels and secured thereto in overlying relation, each of said extensions overlapping and secured to the other extension and to the adjacent longitudinal margins of said face panels to form an end closure of the bag;

3. A bag as set forth in claim 2 in which said 'side panels are formed from the same face panel.

4. A bag comprising a pair of opposed side panels and a pair of opposed face panels each originally separate from the others, said side panels formed with both side margins portions folded to extend parallel to the corresponding side margins of the face panels and secured thereto in overlying relation, said side panels formed with extensions folded transversely to the bag and secured to the adjacent longitudinal margins of said face panels to form an end closure of the bag.

5. A bag as set forth in claim 4 in which said extensions include a body portion comprising a continuation of the side panel and folded transversely to the bag, and include side margin portions folded to extend parallel to the corresponding side margins of the face panels and secured thereto in overlying relation.

6. A bag as set forth in Claim 5 in which the end portions of said side panel extensions overlap and are secured to one another.

7. A bag comprising a pair'of opposed side panels and a pair of opposed face panels each, originally separate from the others,'said side panels formed with extensions projecting from one end only of thebag, said extensions including a body portion comprising a continuation of the side panel;and folded transversely tov the bag, and side margin portions folded to extend parallel to the corresponding side margins of the facerpanels and secured thereto in overlying relation, the side margin portions being secured within said face panels, said side panel extensions overlapping and being secured to. one another to form an end closure at one end only of the bag, said side panels terminating at the other end of the bag to form with the face panels an open mouth.

No references cited. I

FRANKLIN T. GARRETT, Primary Examiner.

Claims

1. A BAG COMPRISING A PAIR OF OPPOSED SIDE PANELS, AND A PAIR OF OPPOSED FACE PANELS, SAID SIDE PANELS FORMED WITH LONGITUDINALLY-EXTENDING MARGIN PORTIONS OVERLYING CORRESPONDING LATERAL MARGINS OF SAID FACE PANELS AND SECURED THERETO, SAID SIDE PANEL FORMED WITH EXTENSIONS FOLDED TRANSVERSELY TO THE BAG, EACH OF SAID EXTENSIONS OVERLAPPING AND SECURED TO THE OTHER EXTENSION AND ADJACENT LONGITUDINAL MARGINS OF SAID FACE PANELS TO FORM AN END CLOSURE OF THE BAG.