Who invented drawstring bags

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Tags: future inventor, inventor, inventing, invention, innovator, creating, engineer, stem, scientist, lightbulb, kids, baby, science, kids who love science. It is also advantageous to set up the equipment so that, after the hemming operation, the cutting of the material into the desired lengths for the making of the bags can be carried out mechanically and in a continuous operation.

While I have described my invention in detail, it will be understood that no unnecessary limitations should be read thereinto, the scope of the invention being pointed out in the appended claims. In a method of manufacturing drawstring bags, the steps which comprise, forming in a web of material near an edge thereof a row of connected ravelable loops of string spaced so closely that a plurality of such ravelable loops are present in a single bag blank, folding said material adjacent said row of ravelable loops to form a hem and sewing said hem whereby to leave said row of ravelable loops protruding outside said hem with the connecting portions of string forming said ravelable loops inside the hem.

In a method of manufacturing drawstring bags, the steps which comprise, forming in a web of material near an edge thereof a row of connected ravelable loops of string spaced so closely that a plurality of such ravelable loops are present in a single bag blank, folding said material adjacent said row of ravelable loops to form a hem, sewing said hem whereby to leave said row of ravelable loops protruding outside said hem with the connecting portions of string forming said ravelable loops inside the hem, cutting said material into bag blanks, each having a plurality of ravelable loops, and sewing the bag blank along appropriate edges for completing the bag.

Ina method of manufacturing drawstring bags, the steps which comprise, forming in a Web of material near an edge thereof a row of connected ravelable loops of string spaced so closely that a plurality of such ravelable loops are present in a single bag blank, folding said material adjacent said row of ravelable loops to form a hem, sewing said hem whereby to leave said row of ravelable loops protruding outside said hem with the connecting portions of string forming said ravelable loops inside the hem, cutting said material into bag blanks, each having a plurality of ravelable loops, sewing the bag blank along appropriate edges for completing the bag, and.

In a method of manufacturing drawstring bags, the steps which comprise, forming in a web of material near an edge thereof a row of connected ravelable loops of string spaced about 3 to 8 of such ravelable loops per lineal inch so that a plurality of such ravelable loops are present in a single bag blank, folding said material adjacent said row of ravelable loops to form a hem and sewing said hem whereby to leave said row of ravelable loops protruding outside said hem with the connecting portions of string forming said ravelable loops inside the hem.

A fabric bag provided with a hem at its top and a row of connected ravelable loops of string protruding outside of the hem with the connecting portions of the string forming said ravelable loops inside the hem, said ravelable loops being adapted to be unraveled or straightened by pulling on the ends of the string whereby said string becomes enclosed in said hem and the extra length of string resulting from straightening-said ravelable loops extends outside of the hem.

An article adapted to be formed into draw- 6. A bag blank for making a draw string bag comprising a fabric blank having a hem along an edge thereof and adapted to be sewed into a bag, and a row of connected ravelable loops of string protruding outside of the hem near the edge of the hemmed blank with the connecting portions of the string forming said ravelable loops inside the hem, and said ravelable loops being adapted to be unraveled or straightened by pulling on the ends of the stringwhereby said string becomes enclosed in said hem and the extra length of string resulting from straightening said ravelable loops extends outside of the hem.

USA en. Bag making machine-hem forming, drawstring inserting and loop forming mechanism. JPA en. GBA en. IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections.

Visit the IIIF page to learn more. View manifest View in Mirador. Description Small drawstring knitting bag with white bird in blue background. Lace-like edging. Nominate this object for photography. See our privacy policy. To overcome these disadvantages, the prior art elastic drawstring trash bags focus on using thicker drawstrings. One problem with using materials which exhibit useful elastic and recovery properties for this application is that the tensile strength at yield of the drawstring is significantly reduced compared to a traditional drawstring of the same thickness.

Therefore, elastic drawstrings of the prior art are typically thicker than non-elastic drawstrings to provide comparable tensile strength at yield. A suitable tensile strength at yield is necessary to prevent the drawstring from ripping or stretching excessively as the bag is carried by the elastic drawstrings. Generally speaking, the elastic drawstrings of the prior art are approximately 3 times thicker than a standard non-elastic drawstring. Accordingly, the thicker elastic drawstring requires more material and significantly increases the cost of the prior art elastic drawstring over a non-elastic drawstring.

In view of the foregoing, it would be desirable to offer improved versions of drawstring bags over what is known in the prior art. It would specifically be desirable to offer a drawstring trash bag with the advantage offered by the prior art elastic drawstring bag to allow securing a bag onto a receptacle while also providing the carrying and closing benefits of traditional non-elastic drawstring bags.

The present invention addresses these needs. The present invention is directed toward an improved construction of a drawstring trash bag.

The bag is comprised of a first panel and a second panel, with a first hem in the first panel. The first hem extends along an upper opening of the bag with a first drawstring disposed within the first hem. A second hem is provided in the second panel. The second hem extends along the upper opening of the bag and a second drawstring is disposed within the second hem. The first and second drawstrings have different elastic properties.

In particular, the first drawstring is an elastic drawstring and the second drawstring is a non-elastic drawstring.

In some embodiments of the present invention, a sealing area is located in each of the respective upper corners of the bags. Each sealing area comprises one or more seals to weld the first panel, the second panel, the elastic drawstring, and the non-elastic drawstring together.

It is contemplated that the present invention may be utilized in ways that are not fully described or set forth herein. The present invention is intended to encompass these additional uses to the extent such uses are not contradicted by the appended claims. Therefore, the present invention should be given the broadest reasonable interpretation in view of the present disclosure, the accompanying FIGURE, and the appended claims. A full and complete understanding of the present invention may be obtained by reference to the detailed description of the present invention and preferred embodiment when viewed with reference to the accompanying drawing.

The present disclosure illustrates one or more preferred embodiments of the present invention. It is not intended to illustrate or encompass all embodiments contemplated by the present invention.

In view of the disclosure of the present invention contained herein, a person having ordinary skill in the art will recognize that innumerable modifications and insubstantial changes may be incorporated or otherwise included within the present invention without diverging from the spirit of the invention. Therefore, it is understood that the present invention is not limited to those embodiments disclosed herein. The appended claims are intended to more fully and accurately encompass the invention to the fullest extent possible, but it is also fully appreciated that certain limitations on the use of particular terms is not intended to conclusively limit the scope of protection.

In the depicted embodiment, the drawstring trash bag is a polyethylene bag constructed from a first panel and a second panel The drawstring trash bag has two side edges and a bottom The top of the respective first panel and second panel define the upper opening of the drawstring trash bag into which trash and refuse may be disposed. Typically, the first panel and second panel are formed from a single polyethylene sheet folded in half.