US1981073A - Package - Google Patents

Description

Nov.- 20, 1934. A. s. ROSE 1,981,073

PACKAGE Filed Aug. 24, 1932 Patented Nov. 20, 1934 PATENT OFFICE PACKAGE Alfred German Rose, Gainsborough, England, assignor to Rose Brothers (Gainsborough) Limited, Gainsborough, England Application August 24, 1932, Serial No. 630,289 In Great Britain September 8, 1931 1 Claim.

This invention relates to the closure of the open ends of block-ended pouch-shaped bags of the type made by first folding a wrapper (of paper or similar material) into U-shape against one 5 end and a pair of parallel sides of a substantially rectangular forming-element, the wrapper being of such dimensions that, when so folded, its marginal portions will extend beyond the adjacent edges of the forming-element and constitute flaps which are closed in upon the other pair of parallel sides of the forming-element to complete the bag.

Two methods of forming such bags are illustrated in Figures 1 to 4a inclusive of the accompanying drawing.

folding the end flaps 12 which are in the plane of the covered end of the forming-element against the adjacent faces 13 of the formingelement (Figure 2), (2)) closing the side-flaps 14 against the folded end-flaps 12 and the corresponding faces 13 of the forming-element (Figure 3), and (0) closing the flaps 15 against the adjacent folded flaps 14 (Figure 4). In an alternative method illustrated in Figures 2a, 3a and 4a, the side-flaps 14 are folded against the adjacent faces 13 of the forming-element (Figure 2a) then the end-flaps 12 are folded (Figure 3a), and finally the side-flaps 15 are folded (Figure 4a). The several flaps are secured in their respective folded positions by adhesive matter or any other convenient fastening-means.

A bag of this type may be formed on a funnel or mandrel (constituting the forming-element) of a bag-making machine, and an article, group of articles, quantity of materials, or the like may I be introduced at any convenient time into the bag.

Alternatively, the forming-element may be constituted by a rectangular block-shaped article or group of articles which is to be enclosed within the bag. In either case, the open end of the completed bag projects beyond the adjacent end of the contents of the bag.

A commonly known example of a bag of this type consists of a sheet of transparent materialof the kind known under the registered name Cellophane-folded about a rectangular shaped carton of cigarettes.

It will be noted that a bag of the type to which the invention relates is characterized by the fact that its open end is formed by two separated portions 16 and 1'7 of the wrapper, both of which project beyond the wrapper end and are U- shaped, and by the fact that the corner parts 18 of the portion 16 lie within the corner parts 19 r of the portion 17; in other words, one U-shaped projecting portion (hereinafter referred to as the inner projecting portion) lies partly within the other.

It has hitherto been the common practice to close the open end of a bag of this type by first folding the corner parts 18 and 19 of the projecting portions of the wrapper against the adjacent end of the contents of the bag and then folding the remaining pair of projecting portions of the Wrapper towards each other and on to those portions of the wrapper which, as just explained, have been folded on to the previously open end of the contents of the bag.

Now, when a bag of this type is employed to contain cigarettes or like articles or powders or similar materials, it is essential that the method 7 of closing the open end of the bag will prevent any escape of the powders or similar materials and any passage of air or moisture, into or out of the closed end of the bag; and it has been found diificult or impossible to ensure that the usual method of closing the open end will produce such an effectively tight end closure.

The object of my present invention is to provide a new and improved method by which a perfectly tight closure at the said end of the said bag may be readily efiected.

The invention provides a new method of closing the open end of a bag of the above type, which method is illustrated in Figures 5, 6 and"? of the accompanying drawing, and consists in first folding that central part 16 of the inner projecting portion of the wrapper on to the adjacent exposed end of the contents of the bag (Figure 5), then folding the corner parts 18 and 19 of both projecting portions of the wrapper on to the previously folded central part 16 of the wrapper (Figure 6), and lastly (Figure 7) closing the last projecting part 17 of the wrapper on to those portions of the wrapper which have been folded already, in the order just described, on to the previously exposed end of the contents of the bag. These various portionsof the wrapper are secured in their respective closed positions by gum, wax, or other suitable adhesive matter.

A block-ended pouch-shaped bag of the type herein specified, of which the open end is closed by the method described herein, is characterized (a) in that the first-folded projecting part 16 of the wrapper is provided with a larger surface for bearing gum or like adhesive matter than has been known previously, and (b) in that each corner part 19, which is folded on to the part 16 of the wrapper, is of rectangular shape, in contradistinction to the commonly known triangular shape of such parts, and, as a consequence, each of them presents a larger surface for oarry ing gum or like adhesive matter than has been known hitherto. By the use of my invention, therefore, I am able to produce a more perfectly shaped and effectively tight closure for the open end of a block-ended pouch-shaped bag of the type specified than has been possible hitherto.

I claim:

The method of closing the open end of a block'- of the wrapper, and securing it in position with adhesive.

- ALFRED GERMAN ROSE.

ended bag of the type described which comprises

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