US2202996A - Method of forming open mesh bags - Google Patents

Description

June 4, 1940.

METHOD E. SACKNER ET AL OF FORMING OPEN MESH BAGS Filed Dec. 19, 1936 2 Sheets-Sheet 1 INVENTOR.

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Julie 9 w. E. SACKNER ET AL 7 2,202,996

METHOD OF FORMING OPEN MESH BAGS l! Filed Dec. 19', 1956 2 Sheets-Sheet 2 14 446 Z. 640/070 BY Jo/m E. /7/'//e# 107 ATTORNEYS Patented June 4, 1940 UNITED I STATES PATENT OFFICE 2,202,996 METHOD OF FORMING OPEN MESH BAGS Wade E. Sackner and John E. Millett, Grand Rapids, Mich., assignors to Sackner Bag Company, Grand Rapids, Mich.

Application December 19, 1936, Serial No. 116,760

3 Claims.

This invention relates to improvements in methods of forming open mesh bags.

This invention relates to open mesh bags for displaying produce or the like and particularly to those on which a printed trade-mark is displayed. In making such a bag, strands of twisted paperare woven to form an open mesh bag the body of which permits viewing of produce in the bag and proper ventilation of the produce. It is not practicable to print a trade-mark or label directly on the mesh as the strands are so far I apart that it will not show and in our invention we provide an area on one side only of the bag in which the warp strands are spaced more closely together than in the rest of the bag and are of a contrasting color so that the trade-mark or label printed thereon will stand out although the produce is not completely hidden.

In the manufacture of such bags heretofore, it has been necessary to make the bag in two pieces if the trade-mark displaying area were to be on one side only of the bag. This necessitated the making of the two sides of the bag separate and the provision of some stitching operation to join them together. If the bag were to be made in a single piece, the trade-mark displaying area had to go clear around the bag. This would hinder the display of the produce through the bag and would make it necessary to print on both sides of the bag because the trade-mark display area is unsightly if nothing is printed thereon. We produce a bag with the trade-mark display area on one side only and do this at one operation, eliminating the expense of stitching or the expense of printing on both sides of the bag and the less efl'ective display of the produce in the bag.

The objects of this invention are:

First, to provide a method of producing bags as above set forth at a single operation.

Second, to provide such a method by which the bags are produced in a single web to be merely severed and reversed.

Other objects and advantages pertaining to details and economies of our invention will appear from the description to follow. The invention is defined in the claims. Preferred embodiments of our invention are illustrated in the accompanying drawings, in which:

Fig. 1 is a view of the front of a bag made by our method and before reversal thereof, showing the trade-mark display area.

Fig. 2 is a partial rear view of the bag of Fig. 1.

Fig. 3 is a view showing a web woven to form the bags of Figs. 1 and 2.

Fig. 4 is a sectional view of a bag before reversal.

Fig. 5 is a view of a portion of the bag showing the method of weaving in detail.

Fig. 6 is a sectional view on line 66 of Fig. 5.

Fig. 'l is a sectional view on line of Fig. 5.

Fig. 8 is a detailed sectional view of the bag after reversal, showing how the single thickness of material is placed inside the finished bag.

Fig. 9 is a view of a web woven to form two rows of bags at a single operation.

Fig. 10 is a detailed view of a modification of our invention showing a slightly different type of weave for forming the meshes.

In forming bags according to our invention, a loom is set up for double weaving two webs, one superposed on the other, with one web forming one side of the bags and the other web the other side of the bags. One web is formed of a pinrality of warp strands l disposed in pairs. The individual warp strands of each pair are spaced apart but are relatively close together while the pairs of warp strands are spaced relatively far apart. We prefer to color the strands l a color which will permit easy viewing of the produce in the bag and have found that a red color is proper for this.

Arranged parallel with the. strands i are a pluralit of white warp strands 2 spaced relatively ose together to form a trade-mark displaying portion on the finished bag; These strands can be any color that will fully display a trade-mark printed thereon and contrast with the strands l and 2.

Weft strands 3- of the color of strands l are interwoven with the warp strands i and 2 and the warp strands I of each pair thereof are woven on opposite sheds of the loom and the adjacent strands 2 are also on opposite sheds from one another. The weft strands 3 are preferably woven two strands to a single pick but on opposite sheds. This forms an open mesh more satisfactory than single strand mesh with the same strength and simplifies the weaving of the two webs as will appear. The web thus formed is indicated at l and the other web superimposed thereon is indicated as 5. The web 5 is formed similarly only the warp strands 2 are omitted leaving the bag on that side without the trademark display area.

At intervals one bag width apart the warp strands ii of the lower web are united with the warp strands l and 2 and all are woven together to form a single thickness of fabrics I (see Fig. 1) to form the bag edges.

One edge of the web as in Fig. 1 is also woven as a single thickness to form the closed end of the bags there made. This is done by manipulating a few of the warp strands of the edge of both webs so that they are woven together with the weft strands of both webs and this is carried out continuously.

,To form the bags, the web of Fig. 1 is severed transversely at 1 and the bags are reversed so the single thickness of material lies inside the bag which strengthens the junction as the threads are snubbed when the bag is filled.

In Fig. 5 we show in detail the weaving operation above described. The strands falling in one web are shown in light outline and those of the other web are shown in heavy outline. The single fabric is shown at the top of Fig. 5 and the double fabric at the bottom. "ihe weft threads are offset in the two layers and the warp threads are likewise offset or staggered so that in making the double web the warp strands are separated in offset pairs and in the trade-mark display area four of the strands 2 are separated from a pair of the strands 6.

In Fig. 9 we show a modification of the method in which the bags are made in pairs extending transversely of the web. The edges are formed as in Fig. 1 by strips I01 and the warp threads at the center are woven continuously as a single fabric layer to form the band 8 which is the closed bottom of the bags. The trade-mark display area is formed at 9 on both sides as above described.

In Fig. 10 we show a modification of the method in that instead of using pairs of warp and weft strands as above indicated, we use only single warp and weft strands. The warp strands 20I are relatively widely spaced and of a red color and the warp strands 202 are relatively closer together to form the trade-mark display area and are of a contrasting color such as white. The weft strands 203 are the color of strands 2M and are relatively widely spaced apart. The two webs are double woven as indicated above, using the strands 202 on one web only, and the edges and closed ends of the bags are formed either as in Fig. 1 or Fig. 9 by a single thickness of material to be severed.

We have shown and described our invention in the forms preferred by us and wish to claim the same specifically and also broadly as pointed out in the appended claims.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:

1. In the method of forming open mesh bags for displaying produce or the like, each bag having one side formed completely of uniform open mesh for displaying the contents of the bag and the other side formed in part of the same uniform open mesh for displaying produce and in part of open mesh portions of finer mesh suitable for displaying a printed trade-mark, the steps of double weaving two webs of open mesh fabric to form the sides of the bag by arranging a plurality of strands spaced uniformly and relatively far apart to form the warp threads of the entire web forming the uniform open mesh side of the 7 bag, arranging a plurality of strands spaced similarly to the aforesaid strands to form the warp threads of a portion only of the web forming the other side of the bag, arranging a plurality of threads grouped together and spaced relatively closer together to form the remaining warp strands of said other side of the bag, and interweaving in said warp strands of both webs weft strands spaced relatively far apart to form two separate webs forming the two sides of the bag, and weaving all of the aforesaid warp strands together with weft strands for a short distance at points spaced longitudinally on the webs to form a length of single thickness material to form the bag edges.

2. -In the method of forming open mesh bags for displaying produce or the like, each bag having one side formed completely of uniform open mesh for displaying the contents of the bag and the other side formed in part of the same uniform open mesh for displaying produce and in part of open mesh portions of finer mesh suitable for displaying a printed trade-mark, the steps of double weaving two webs of open mesh fabric to form the sides of the bag by arranging a plurality of strands spaced uniformly and relatively far apart to form the warp threads of the entire web forming the uniform open mesh side of the bag, arranging a plurality of strands spaced similarly to the aforesaid strands to form the warp threads of a portion only of the web forming the other side of the bag, arranging a plurality of threads grouped together and spaced relatively closer together to form the remaining warp strands of said other side of the bag, and interweaving in said warp strands of both webs weft strands spaced relatively far apart to form two separate webs forming the two sides of the bag, and weaving all of the aforesaid warp strands together with weft strands for a short distance at points spaced longitudinally on the webs to form a length of single thickness material to form the bag edges; the pairs of warp threads of the individual webs being in staggered spaced relation whereby when the two webs are woven together as one web to form the bottom of the bag, the pairs of warps of one web lie between the pairs of warps of the other web to form a close weave.

3. A method as set forth in claim 1, wherein the warp strands of the more open mesh for displaying produce are separated in alternate pairs of adjacent strands into an upper and a lower group, whereby the pairs of warp strands of one group are in staggered spaced relationship to the pairs in the other group, and weaving weft strands into the warp strands of each group to form the separate layers of mesh material with the warp strands of each pair thereof of each group on opposite sheds and with the weft strands in each group woven two to a single pick and on opposite sheds.

WADE E. SACKNER. JOHN E. MILLE'I'I'.

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