US20130216159A1 - Tear resistant bag - Google Patents
Tear resistant bag Download PDFInfo
- Publication number
- US20130216159A1 US20130216159A1 US13/847,960 US201313847960A US2013216159A1 US 20130216159 A1 US20130216159 A1 US 20130216159A1 US 201313847960 A US201313847960 A US 201313847960A US 2013216159 A1 US2013216159 A1 US 2013216159A1
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- United States
- Prior art keywords
- valley
- bag
- seam
- flaps
- flat portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/1608—Integral flaps for tying above the bag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F1/00—Refuse receptacles; Accessories therefor
- B65F1/0006—Flexible refuse receptables, e.g. bags, sacks
- B65F1/002—Flexible refuse receptables, e.g. bags, sacks with means for opening or closing of the receptacle
Definitions
- the present invention relates generally to bags, and more particularly relates to tie bags.
- tie bags for storage and disposal of garbage or refuse is well known in the art.
- the tie features of such bags are normally projecting flaps that are integral with the body of the bag. The flaps are tied together in order to close the bag.
- Such tie features represented an improvement over prior bags in that they provided an improved means for closing bags that did not greatly reduce the bag capacity. They were also generally easy to manufacture. Representative bags are disclosed in U.S. Pat. Nos. 4,890,736, 5,246,110, 5,611,627, and 6,565,794.
- a tie bag for storing refuse or garbage comprising an undulating top edge defining an opening to the bag, the top edge may include at least two rounded flaps with two convex sides and at least two valleys. Each valley may have two concave sides and a flat portion which defines the bottom of the valley.
- the top edge of the bag may be composed of alternating flaps and valleys such that each side of a valley is disposed between the flat portion of a valley and the side of a flap, and each side of a flap is disposed between a peak of a flap and a side of a valley.
- the flaps may be tied together to at least partially close the bag.
- the bag may further comprise a first seam that intersects the flat portion of a valley.
- the bag may also include a second seam that interests a second valley, opposite the first seam, at the flat portion of the second valley.
- a tie bag comprising a bag body and a top edge defining an opening.
- the top edge may include at least two flaps and at least two valleys, wherein the flaps may be to tied together to at least partially close the bag.
- the top edge may transition between the flaps and valleys along curves.
- the bag may also include at least one seam in the bag body that intersects the top edge at the lowest point of a first valley.
- the first valley may include a slit in the top edge that extends into the bag body.
- a tie bag comprising a bag body and a top edge defining an opening.
- the top edge may include at least two flaps defining primary peaks and at least two primary valleys, wherein each primary valley includes two secondary valleys and a center valley disposed between two secondary peaks.
- the primary valleys may be larger than the secondary valleys and the primary peaks may be larger than center peaks.
- the peaks and valleys may include two curved sides that join it to the peak or valley proximate it along the top edge.
- the flaps may be to tied together to at least partially close the bag.
- the bag may also include at least one seam in the bag body that intersects the top edge at the center peak of the first valley.
- FIG. 1 is a perspective view of a tie bag with four flaps and four valleys with flat portions at the bottom.
- FIG. 2 is top view of the bag of FIG. 1 , wherein the flaps have been tied together to close the bag.
- FIG. 3 is a side profile of the bag of FIG. 1 showing two flaps and a valley.
- FIG. 4 is a top view of a bag.
- FIG. 5 is the same view as FIG. 3 , but the flaps are subject to opposing forces.
- FIG. 6 is a perspective view of a tie bag with four flaps and four valleys, wherein the valley has two slits.
- FIG. 7 is a side profile of the bag of FIG. 6 showing two flaps and a valley.
- FIG. 8 is the same view as FIG. 7 , but the flaps are subject to opposing forces.
- FIG. 9 is a side profile of a bag with only one slit.
- FIG. 10 is the same view as FIG. 9 , but the flaps are subject to opposing forces.
- FIG. 11 is a perspective view of a tie bag with four flaps and four valleys, wherein the valleys have secondary peaks and a center valley.
- FIG. 12 is a side profile of the bag of FIG. 11 showing two flaps and a valley.
- FIG. 13 is the same view as FIG. 12 , but the flaps are subject to opposing forces.
- FIG. 14 is a perspective view of a tie bag with four flaps and four valleys, wherein the valleys have secondary valleys and a center peak.
- FIG. 15 is perspective view of a tie bag with four flaps and a four valleys, wherein the valleys have secondary valleys and center peaks that are flat on top.
- FIG. 16 is a perspective view of a tie bag with four flaps and four valleys, wherein the seams do not intersect the valleys at the lowest points of the valleys.
- FIG. 17 is a side profile of the bag of FIG. 16 showing two flaps and a valley.
- FIG. 18 is the same view as FIG. 17 , but the flaps are subject to opposing forces.
- FIG. 19 is a side profile of a bag of the prior art showing two flaps and a valley.
- FIG. 20 is the same view as FIG. 19 , but the flaps are subject of opposing forces.
- a tie bag 100 for storing refuse or garbage which may include an undulating top edge 102 defining an opening to the bag.
- the top edge may include four flaps 104 , 106 108 , 110 and four valleys 116 , 118 , 120 , 122 .
- the flaps 104 , 106 , 108 , 110 of the tie bag 100 may have peaks 105 , 107 , 109 , 111 which may be flat.
- the flaps and valleys may be similar in shape. Thus, flap 104 and valley 116 will be described below and the other flaps and valleys may be similarly shaped. Referring to FIG.
- the flap 104 may include a first side 126 and a second side 128 wherein the sides 126 , 128 of the flap 104 are convex.
- the valley 116 may include first and second concave sides 136 , 138 and a flat portion 140 which defines the bottom of the valley 116 .
- the top edge 102 of the bag 100 may include alternating flaps 104 and valleys 116 . Accordingly, the side 126 of the flap 104 is disposed between the peak 105 of the flap 104 and the side 136 of the valley 116 .
- the side 136 of the valley is disposed between the side 126 of the flap 104 and the flat portion 140 of the valley 116 .
- the side 138 of the valley is disposed between the flat portion 140 and the side 130 of the flap 106 .
- the side 130 of the flap 106 is disposed between the side 138 of the valley 116 and the peak 107 of the flap 106 . All of the flaps and valleys may be configured in a similar alternating arrangement.
- the tie bag 100 is made of a thermoplastic material such as, for example, high density or low density polyethylene or polypropylene.
- the flaps 104 , 106 , 108 , 110 of the tie bag 100 may be tied together to at least partially close the bag 100 .
- the flaps 104 , 106 , 108 , 110 may be tied together in pairs, wherein each flap 104 , 106 is tied to the flap 108 , 110 opposite it along the top edge 102 . Accordingly, the first flap 104 is tied to the third flap 108 while the second flap 106 is tied to the fourth flap 110 .
- the bag 100 is secured partially shut for storage or transport.
- the tied-together flaps 104 , 106 , 108 , 110 also provide a means for easily gripping and lifting the bag 100 . It will also be appreciated that although this embodiment has four flaps 104 , 106 , 108 , 110 and four valleys 116 , 118 , 120 , 122 , the bag 100 may include any number flaps and valleys, as long as the bag includes at least two flaps that may be tied together. For example, the bag may have two, three, five, six, seven, eight, nine, or ten flaps.
- the tie bag 100 may include a front panel 148 and a back panel 150 joined along three edges 152 , 154 , 156 .
- the top edge 102 defines the fourth edge 158 , wherein the front panel 148 and the back panel 150 are not joined.
- the front panel 148 and the back panel 150 may be joined along the first edge 152 by a first seam 160 that runs from the third, or bottom, edge 156 to the top edge 102 .
- the first seam 160 intersects the flat portion 140 of the first valley 116 at a point 142 on that flat portion 140 .
- the first seam 160 may intersect the flat portion 140 at a middle point of the flat portion 140 .
- the seam may intersect at other locations.
- the seam 160 divides the flat portion 140 of the valley 116 into a first portion 144 and a second portion 146 .
- the bag 100 may also include a second seam 166 that intersects the third valley 120 opposite the first seam 160 at a point 176 of the flat portion 174 of the third valley 120 , as shown in FIG. 1 .
- the second seam 166 may intersect the flat portion 174 at a middle point of the flat portion 174 .
- the seam may intersect at other locations.
- the second seam 166 defines the second edge 154 and runs from the bottom edge 156 to where it intersects the top edge 102 .
- the third edge 156 of the bag 100 may be a folded edge such as, for example, a U-fold.
- the third edge may be defined by a third seam running between the bottoms of the first and second seams 160 , 166 .
- the seams 160 , 166 may be formed by heat sealing, ultrasonic welding, adhesives, or folds.
- the seams 160 , 166 of the bag 100 may include front panel and back panel material that forms first and second skirts 210 , 212 along the length of the first and second seams 160 , 166 , respectively.
- the skirts can result from manufacturing processes in which the front panel 148 and back panel 150 are not joined at their outermost edges to form the seams 160 , 166 .
- the bag material of the panels 148 , 150 beyond the first seam 160 and second seam 160 form the first skirt 210 and second skirt 212 , respectively.
- the length 208 of the flat portion 140 does not include the skirt 210 .
- the bag 100 may not include skirts.
- the valley sides 136 , 138 meet the flap sides 126 , 130 at approximately halfway between the vertical displacement between the peaks 105 , 107 of the flaps 104 , 106 and the flat portion 140 of the valley 116 .
- the valley sides 136 , 138 may extend nearly to the peaks 105 , 107 or the flap sides 126 , 130 may extend nearly to the flat portion 140 .
- the meeting points are generally where the concave sides 136 , 138 of the valley 116 transition to the convex sides 126 , 130 of the flaps 104 , 106 .
- a rounded first corner 182 may be located where the first portion 144 of the flat portion 140 meets the first side 136 of the valley 116 .
- a rounded second corner 184 may be located where the second portion 146 of the flat portion 140 of the valley 116 meets the second side 138 of the valley 116 .
- the corners may not be rounded.
- the bag 100 is often held and maneuvered by a user gripping the bag 100 by two or more flaps 104 , 106 , 108 , 110 .
- the user often subjects the bag 100 to a shaking up and down motion when opening the bag 100 before use or when attempting to orient the garbage or refuse inside the bag 100 .
- the user can also expose the bag to stresses.
- the seams 160 , 166 represent relatively weaker points in the structure of the bag 100 .
- FIG. 3 illustrates the vector components 186 , 188 of the forces applied to the bag 100 by a user gripping the bag 100 at the first and second flaps 104 , 106 , which are normal to the seam 160 . It will be appreciated that the size of the vector components 186 , 188 that are normal to the seam will vary depending upon how forces are applied to the flaps.
- the flaps 104 , 106 tend to pivot out around the lowest point in the valley 116 , thereby subjecting that point to significant stress. Because the tie bag 100 includes a flat portion 140 of the valley 116 , this force 186 , 188 is spread out over the length of the flat portion 140 and reduces the possibilities that any single point may experience the concentration of the forces 186 , 188 .
- the flaps 104 , 106 As the flaps 104 , 106 are pulled apart, the flaps 104 , 106 tend to pivot about the corners 182 , 184 of the valley 116 , as shown by moment arrows 192 , 194 , such that the flat portion 140 tends to buckle and rise slightly therebetween, as shown in FIG. 5 . Accordingly, the greatest tension experienced at the seam 160 is not at the weaker intersection point 164 along the top edge 102 . Instead, forces 186 , 188 , which are perpendicular to the seam 160 , are spread out over the top section of the seam 160 between points 164 and 165 , as shown by force arrows 200 and 202 .
- the length 208 of the flat portion 140 of the valley 116 in a first embodiment may be between 0.25 and 30 inches (0.625 and 75 cm). In a second embodiment, the length 208 may be between 0.5 and 15 inches (1.25 and 37.5 cm). In a third embodiment, the length 208 may be between 3 and 4 inches (7.5 and 10 cm). In a fourth embodiment, the length 208 may be between 2 and 3 inches (5 and 7.5 cm). In a fifth embodiment, the length 208 may be 2.5 inches (6.25 cm) for a bag which is 23.75 inches (59.375 cm) wide.
- the flat portion 140 of the valley 116 may be a variety of lengths depending on the overall size of the bag and the configuration of the flaps and valleys. It will also be appreciated that the flat portion 140 of the valley 116 may be only substantially flat. That is, the flat portion 140 may be defined by a slight curve or slope.
- FIGS. 19 and 20 illustrate a tie bag 240 of the prior art including a top edge 242 with a wave configuration.
- the point 254 where the seam 252 meets the valley 250 is the lowest point 260 between the two flaps 246 , 248 .
- the intersection point 254 of the seam 252 may thereby be subject to concentrated stress, as shown by forces 262 and 264 in FIG. 20 .
- the concentration of stress may lead to separation of the seam 252 at point 254 .
- the tie bag 300 may include a bag body 302 and a top edge 304 defining an opening.
- the top edge 304 may include four flaps 306 , 308 , 310 , 312 and four valleys 326 , 328 , 330 , 332 , wherein the flaps 306 , 308 , 310 , 312 may be to tied together to at least partially close the bag 300 .
- the top edge 304 may transition between the flaps 306 , 308 , 310 , 312 and valleys 326 , 328 , 330 , 332 along curves 316 , 317 , 318 , 319 , 320 , 321 , 322 , 323 .
- the bag 300 may also include a first seam 346 in the bag body 302 that intersects the top edge 304 at the point 348 of a first valley 326 .
- the first valley 326 may include two slits 334 , 338 in the top edge 304 that extend into the bag body 302 .
- the slit 334 may be located on one side of the seam 346 and slit 338 may be located on the other side of the seam 346 , as shown in FIG. 7 .
- the slits 334 , 338 may extend from the top edge 304 parallel to the seam 346 .
- the slits may not be parallel to the seam 346 .
- the tie bag 300 may also include a second seam 350 that intersects the point 352 of the third valley 330 , as shown in FIG. 6 .
- the third valley 330 may include third and fourth slits 342 , 344 configured similarly to those of the first valley 326 .
- the length 335 of the slit 334 may be 0.125 to 4 inches (0.3125 to 10 cm). In another embodiment, the length 335 of slit 334 may be 0.125 to 1.5 inches (0.3125 to 3.75 cm). In another embodiment, the length 335 of the slit 334 may be 0.25 to 1 inches (0.625 to 2.5 cm). In another embodiment, the length 335 of the slit 334 may be 0.25 inches (0.625 cm). Referring to FIG. 6 , in one embodiment, the distance 337 between the slit 334 and the seam 346 may be 0.125 to 12 inches (0.3125 to 30 cm).
- the distance 337 between the slit 334 and the seam 346 may be 0.125 to 2 inches (0.3125 to 5 cm). In another embodiment, the distance 337 between the slit 334 and the seam 346 may be 0.125 to 1 inches (0.3125 to 2.5 cm). In another embodiment, the length may be 0.5 inches (1.25 cm).
- the first and second slits 334 , 338 reduce the tension at the intersection point 348 of the first seam 346 with the top edge 304 .
- the flaps 306 , 308 tend to pivot out around the lowest point in the valley 326 .
- the bottoms 336 , 340 of the slits 334 , 338 act as the pivot points for the flaps 306 , 308 .
- the forces 382 , 384 pulling on the seam 346 accordingly shift down from the intersection point 348 to an area 349 generally level with the bottoms 336 , 340 of the slits 334 , 338 .
- the third and fourth slits 342 , 344 similarly reduce the tension at the intersection point 352 of the second seam 350 and thus reduce the possibility of the initiation of a tear.
- the first valley 390 of the bag 386 may include only one slit 388 .
- the valley 390 may be divided into a first side 392 and a second side 393 , and the slit 388 may be located on the first side 392 , as shown in FIG. 9 .
- Having a single slit 388 helps the bag 386 resist tears at the point 395 where the seam 394 meets the top edge 387 .
- the forces 398 , 399 that act on the seam 394 are spread out between the point 395 where the seam 394 meets the top edge 387 and a lower point 391 on the seam 394 .
- the slit 388 may be located on the second side 393 of the valley 390 .
- the first valley 390 may include multiple slits on one side of the seam 394 or on both sides of the seam 394 .
- the slit 388 of the first valley 390 may represent the only slit along the entire top edge 387 of the bag.
- the tie bag 400 may include a bag body 402 and a top edge 404 defining an opening.
- the top edge 404 may include four flaps 420 , 422 , 424 , 426 defining primary peaks 490 , 492 , 494 , 496 and four primary valleys 446 , 448 , 450 , 452 .
- Valleys 446 , 448 , 450 , 452 may be similar in shape.
- valley 446 will be described.
- Primary valley 446 includes two secondary valleys 432 , 434 located outside of two secondary peaks 436 , 438 .
- a center valley 440 is located between the secondary peaks 436 , 438 .
- the center valley 440 may not be as deep as its surrounding secondary valleys 432 , 434 .
- the peaks 490 , 492 , 494 , 496 may be similar in shape. Thus, peak 490 will be described.
- the primary peak 490 may include two secondary peaks 410 , 412 located outside of two secondary valleys 414 , 416 . There may be a center peak 418 disposed between the secondary valleys 414 , 416 .
- the peaks and valleys may be connected along curves 500 , 502 , 504 , 506 , 508 , 510 , 512 , 514 , 516 , 518 , 520 that join them to the peaks or valleys proximate them along the top edge.
- the flaps 420 , 422 , 424 , 426 may be to tied together to at least partially close the bag 400 .
- the distance 435 between the bottom of the secondary valley 434 and the top of the secondary peak 438 may be 0.125 to 4 inches (0.3125 to 10 cm). In a second embodiment, the distance 435 between the bottom of the secondary valley 434 and the top of the secondary peak 438 may be 0.25 to 2 inches (0.625 to 5 cm). In a third embodiment, the distance 435 between the bottom of the secondary valley 434 and the top of the secondary peak 438 may be 1 inch (2.5 cm).
- the bag 400 may include a first seam 458 in the bag body 402 that intersects the top edge 404 at a point 460 .
- Point 460 may be located at the bottom of the center valley 440 of the first valley 446 .
- the bag 400 may also include a second seam 462 that intersects the top edge 404 at a point 466 .
- the point 466 may be located at the bottom of the center valley 442 of the third valley 450 .
- the intersection point 460 of the seam 458 is not in the lowest point of the primary valley 446 , as the secondary valleys 432 , 434 are deeper than the center valley 440 . Accordingly, as the first and second flaps 420 , 422 are pulled apart, as shown by force arrows 474 and 476 in FIG. 12 , the bottoms of the secondary valleys 432 , 434 may act as the pivot points for the flaps 420 , 422 . As shown in FIG.
- the bag 600 may be similar to the embodiment in FIG. 11 , but the bag 600 may include no center valleys.
- the primary valley 602 includes a center peak 608 disposed between two secondary valleys 604 , 606 .
- the center peak 608 has a rounded apex and the seam 610 may intersect the valley 602 at the center peak 608 .
- This embodiment may display similar behavior and resistance against tearing of the seam 610 under strain as the embodiment depicted in FIGS. 11-13 .
- This embodiment may also be similarly dimensioned as the embodiment depicted in FIGS. 11-13 with respect to the distance between the bottom of the secondary valley and the top of the center peak.
- the bag 620 may be similar to the embodiment in FIG. 14 , but the center peak 628 is flat on top.
- the primary valley 622 of the bag 620 includes a center peak 628 disposed between two secondary valleys 624 , 626 .
- the seam 630 may intersect the primary valley 622 at the center peak 628 .
- This embodiment may display similar behavior and resistance against tearing of the seam 630 under strain as the embodiment depicted in FIGS. 11-13 .
- This embodiment may also be similarly dimensioned as the embodiment depicted in FIGS. 11-13 with respect to the distance between the bottom of the secondary valley and the top of the center peak.
- the bag 700 includes a bag body 702 and a top edge 704 defining an opening.
- the top edge 704 may include four flaps 706 , 708 , 710 , 712 and four valleys 714 , 716 , 718 , 720 , wherein the flaps 706 , 708 , 710 , 712 may be tied together to at least partially close the bag 700 .
- the top edge 704 may transition between the flaps 706 , 708 , 710 , 712 and valleys 714 , 716 , 718 , 720 along curves 722 , 724 , 726 , 728 , 730 , 732 , 734 , 736 .
- the bag may also include a first seam 740 in the bag body 702 that intersects the top edge 704 at the point 742 of the first valley 714 . Referring to FIG. 17 , the intersection point 742 of the seam 740 is not located at the lowest point 744 of the first valley 714 . Accordingly, the intersection point 742 is located part way up curve 724 . In another embodiment, the intersection point 742 may be located along curve 726 . Referring to FIG. 16 , The bag 700 may also include a second seam 746 that intersects the third valley 718 at a point 748 part way up curve 732 , such that the intersection point 742 is not located at the lowest point of the valley 718 .
- the offset 780 between the lowest point 744 and the seam 740 may be 0.125 to 12 inches (0.3125 to 30 cm). In a second embodiment, the offset 780 between the lowest point 744 and the seam 740 may be 0.5 to 2 inches (1.25 to 5 cm). In a third embodiment, the offset 780 between the lowest point 744 and the seam 740 may be 1 to 2 inches (2.5 to 5 cm). In a fourth embodiment, the offset 780 between the lowest point 744 and the seam 740 may be 1.5 inches (3.75 cm).
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Abstract
A tie bag for storing refuse or garbage includes an undulating top edge defining an opening to the bag. The top edge may include two flaps and two valleys. In one embodiment, the valley may include a flat portion at the bottom of the valley. The flaps may be tied together to at least partially close the bag. The bag further may include a first seam that intersects the flat portion of the valley. The flat portion reduces the possibility of tearing the seam. In another embodiment, the valley may include a slit. In an additional embodiment, the valley may include two secondary valleys and a center valley. In another embodiment, the seam may intersect the top edge at a point other than the lowest point in the valley.
Description
- The present application is a continuation of U.S. patent application Ser. No. 12/158,366 filed Jun. 20, 2008, which is the national stage of International Application No. PCT/US06/61868 filed Dec. 11, 2006, which claims the benefit of U.S. Provisional Application No. 60/755,181, filed Dec. 30, 2005. Each of the above-referenced applications is hereby incorporated by reference in its entirety.
- The present invention relates generally to bags, and more particularly relates to tie bags.
- The use of tie bags for storage and disposal of garbage or refuse is well known in the art. The tie features of such bags are normally projecting flaps that are integral with the body of the bag. The flaps are tied together in order to close the bag. Such tie features represented an improvement over prior bags in that they provided an improved means for closing bags that did not greatly reduce the bag capacity. They were also generally easy to manufacture. Representative bags are disclosed in U.S. Pat. Nos. 4,890,736, 5,246,110, 5,611,627, and 6,565,794.
- One problem inherent in such bags is that the seams that mark where portions of the bag are joined are susceptible to separating. Often the seams will meet the top edge of tie bags in the valleys proximate the flaps. Accordingly, when the bags are shaken by a person holding the bags by the flaps or are fitted over the rim of a garbage can, the forces applied by a user are concentrated at the point where the seam meets the valley and may cause the seams to open. The utility of the bag is thereby greatly reduced.
- The invention provides novel means for fortifying tie bags against separation at the seams. According to one aspect of the invention, there is provided a tie bag for storing refuse or garbage comprising an undulating top edge defining an opening to the bag, the top edge may include at least two rounded flaps with two convex sides and at least two valleys. Each valley may have two concave sides and a flat portion which defines the bottom of the valley. The top edge of the bag may be composed of alternating flaps and valleys such that each side of a valley is disposed between the flat portion of a valley and the side of a flap, and each side of a flap is disposed between a peak of a flap and a side of a valley. The flaps may be tied together to at least partially close the bag. The bag may further comprise a first seam that intersects the flat portion of a valley. The bag may also include a second seam that interests a second valley, opposite the first seam, at the flat portion of the second valley.
- According to another aspect of the invention, there is provided a tie bag comprising a bag body and a top edge defining an opening. The top edge may include at least two flaps and at least two valleys, wherein the flaps may be to tied together to at least partially close the bag. The top edge may transition between the flaps and valleys along curves. The bag may also include at least one seam in the bag body that intersects the top edge at the lowest point of a first valley. The first valley may include a slit in the top edge that extends into the bag body.
- According to yet another aspect of the invention, there is provided a tie bag comprising a bag body and a top edge defining an opening. The top edge may include at least two flaps defining primary peaks and at least two primary valleys, wherein each primary valley includes two secondary valleys and a center valley disposed between two secondary peaks. The primary valleys may be larger than the secondary valleys and the primary peaks may be larger than center peaks. The peaks and valleys may include two curved sides that join it to the peak or valley proximate it along the top edge. The flaps may be to tied together to at least partially close the bag. The bag may also include at least one seam in the bag body that intersects the top edge at the center peak of the first valley.
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FIG. 1 is a perspective view of a tie bag with four flaps and four valleys with flat portions at the bottom. -
FIG. 2 is top view of the bag ofFIG. 1 , wherein the flaps have been tied together to close the bag. -
FIG. 3 is a side profile of the bag ofFIG. 1 showing two flaps and a valley. -
FIG. 4 is a top view of a bag. -
FIG. 5 is the same view asFIG. 3 , but the flaps are subject to opposing forces. -
FIG. 6 is a perspective view of a tie bag with four flaps and four valleys, wherein the valley has two slits. -
FIG. 7 is a side profile of the bag ofFIG. 6 showing two flaps and a valley. -
FIG. 8 is the same view asFIG. 7 , but the flaps are subject to opposing forces. -
FIG. 9 is a side profile of a bag with only one slit. -
FIG. 10 is the same view asFIG. 9 , but the flaps are subject to opposing forces. -
FIG. 11 is a perspective view of a tie bag with four flaps and four valleys, wherein the valleys have secondary peaks and a center valley. -
FIG. 12 is a side profile of the bag ofFIG. 11 showing two flaps and a valley. -
FIG. 13 is the same view asFIG. 12 , but the flaps are subject to opposing forces. -
FIG. 14 is a perspective view of a tie bag with four flaps and four valleys, wherein the valleys have secondary valleys and a center peak. -
FIG. 15 is perspective view of a tie bag with four flaps and a four valleys, wherein the valleys have secondary valleys and center peaks that are flat on top. -
FIG. 16 is a perspective view of a tie bag with four flaps and four valleys, wherein the seams do not intersect the valleys at the lowest points of the valleys. -
FIG. 17 is a side profile of the bag ofFIG. 16 showing two flaps and a valley. -
FIG. 18 is the same view asFIG. 17 , but the flaps are subject to opposing forces. -
FIG. 19 is a side profile of a bag of the prior art showing two flaps and a valley. -
FIG. 20 is the same view asFIG. 19 , but the flaps are subject of opposing forces. - Referring to
FIG. 1 , there is provided atie bag 100 for storing refuse or garbage which may include an undulatingtop edge 102 defining an opening to the bag. The top edge may include fourflaps valleys flaps tie bag 100 may havepeaks flap 104 andvalley 116 will be described below and the other flaps and valleys may be similarly shaped. Referring toFIG. 3 , theflap 104 may include afirst side 126 and asecond side 128 wherein thesides flap 104 are convex. Thevalley 116 may include first and secondconcave sides flat portion 140 which defines the bottom of thevalley 116. Thetop edge 102 of thebag 100 may include alternatingflaps 104 andvalleys 116. Accordingly, theside 126 of theflap 104 is disposed between thepeak 105 of theflap 104 and theside 136 of thevalley 116. Theside 136 of the valley is disposed between theside 126 of theflap 104 and theflat portion 140 of thevalley 116. Theside 138 of the valley is disposed between theflat portion 140 and the side 130 of theflap 106. The side 130 of theflap 106 is disposed between theside 138 of thevalley 116 and thepeak 107 of theflap 106. All of the flaps and valleys may be configured in a similar alternating arrangement. In this embodiment, thetie bag 100 is made of a thermoplastic material such as, for example, high density or low density polyethylene or polypropylene. - Referring to
FIG. 2 , theflaps tie bag 100 may be tied together to at least partially close thebag 100. Theflaps flap flap top edge 102. Accordingly, thefirst flap 104 is tied to thethird flap 108 while thesecond flap 106 is tied to thefourth flap 110. Once theflaps bag 100 is secured partially shut for storage or transport. The tied-togetherflaps bag 100. It will also be appreciated that although this embodiment has fourflaps valleys bag 100 may include any number flaps and valleys, as long as the bag includes at least two flaps that may be tied together. For example, the bag may have two, three, five, six, seven, eight, nine, or ten flaps. - Referring to
FIG. 1 , thetie bag 100 may include afront panel 148 and aback panel 150 joined along threeedges top edge 102 defines thefourth edge 158, wherein thefront panel 148 and theback panel 150 are not joined. Thefront panel 148 and theback panel 150 may be joined along thefirst edge 152 by afirst seam 160 that runs from the third, or bottom,edge 156 to thetop edge 102. Referring toFIG. 3 , thefirst seam 160 intersects theflat portion 140 of thefirst valley 116 at apoint 142 on thatflat portion 140. In this embodiment, thefirst seam 160 may intersect theflat portion 140 at a middle point of theflat portion 140. In other embodiments, the seam may intersect at other locations. Theseam 160 divides theflat portion 140 of thevalley 116 into afirst portion 144 and asecond portion 146. Thebag 100 may also include asecond seam 166 that intersects thethird valley 120 opposite thefirst seam 160 at apoint 176 of theflat portion 174 of thethird valley 120, as shown inFIG. 1 . In this embodiment, thesecond seam 166 may intersect theflat portion 174 at a middle point of theflat portion 174. In other embodiments, the seam may intersect at other locations. Thesecond seam 166 defines thesecond edge 154 and runs from thebottom edge 156 to where it intersects thetop edge 102. Thethird edge 156 of thebag 100 may be a folded edge such as, for example, a U-fold. In another embodiment, the third edge may be defined by a third seam running between the bottoms of the first andsecond seams seams - Referring to
FIG. 4 , theseams bag 100 may include front panel and back panel material that forms first andsecond skirts second seams front panel 148 andback panel 150 are not joined at their outermost edges to form theseams panels first seam 160 andsecond seam 160 form thefirst skirt 210 andsecond skirt 212, respectively. As shown inFIG. 4 , thelength 208 of theflat portion 140 does not include theskirt 210. In other embodiments, thebag 100 may not include skirts. - Referring to
FIG. 3 , there is illustrated a profile of the first andsecond flaps first valley 116 disposed therebetween. Thesides sides 126, 130 of first andsecond flaps peaks flaps flat portion 140 of thevalley 116. In other embodiments, the valley sides 136, 138 may extend nearly to thepeaks flat portion 140. The meeting points are generally where theconcave sides valley 116 transition to theconvex sides 126, 130 of theflaps FIG. 3 , a roundedfirst corner 182 may be located where thefirst portion 144 of theflat portion 140 meets thefirst side 136 of thevalley 116. Additionally, a roundedsecond corner 184 may be located where thesecond portion 146 of theflat portion 140 of thevalley 116 meets thesecond side 138 of thevalley 116. In other embodiments, the corners may not be rounded. - Referring to
FIGS. 3 and 5 , during normal use of thetie bag 100, thebag 100 is often held and maneuvered by a user gripping thebag 100 by two ormore flaps bag 100 to a shaking up and down motion when opening thebag 100 before use or when attempting to orient the garbage or refuse inside thebag 100. When trying to fit thebag 100 around the rim of a garbage receptacle, the user can also expose the bag to stresses. Theseams bag 100. Thebag 100 is therefore susceptible to separation at theseams seams flaps intersection point 164 where theseam 160 meets thetop edge 102 is particularly susceptible to tearing.FIG. 3 illustrates thevector components bag 100 by a user gripping thebag 100 at the first andsecond flaps seam 160. It will be appreciated that the size of thevector components - Referring to
FIGS. 3 and 5 , as twoadjacent flaps flaps valley 116, thereby subjecting that point to significant stress. Because thetie bag 100 includes aflat portion 140 of thevalley 116, thisforce flat portion 140 and reduces the possibilities that any single point may experience the concentration of theforces flaps flaps corners valley 116, as shown bymoment arrows flat portion 140 tends to buckle and rise slightly therebetween, as shown inFIG. 5 . Accordingly, the greatest tension experienced at theseam 160 is not at theweaker intersection point 164 along thetop edge 102. Instead,forces seam 160, are spread out over the top section of theseam 160 betweenpoints force arrows - Referring to
FIG. 3 , thelength 208 of theflat portion 140 of thevalley 116 in a first embodiment may be between 0.25 and 30 inches (0.625 and 75 cm). In a second embodiment, thelength 208 may be between 0.5 and 15 inches (1.25 and 37.5 cm). In a third embodiment, thelength 208 may be between 3 and 4 inches (7.5 and 10 cm). In a fourth embodiment, thelength 208 may be between 2 and 3 inches (5 and 7.5 cm). In a fifth embodiment, thelength 208 may be 2.5 inches (6.25 cm) for a bag which is 23.75 inches (59.375 cm) wide. However, it will be appreciated that theflat portion 140 of thevalley 116 may be a variety of lengths depending on the overall size of the bag and the configuration of the flaps and valleys. It will also be appreciated that theflat portion 140 of thevalley 116 may be only substantially flat. That is, theflat portion 140 may be defined by a slight curve or slope. -
FIGS. 19 and 20 illustrate atie bag 240 of the prior art including atop edge 242 with a wave configuration. The point 254 where theseam 252 meets thevalley 250 is the lowest point 260 between the twoflaps flaps forces flaps seam 252 may thereby be subject to concentrated stress, as shown byforces FIG. 20 . The concentration of stress may lead to separation of theseam 252 at point 254. Compared to the prior art shown inFIGS. 19 and 20 , the embodiment inFIGS. 1-5 can withstand greater forces applied toconsecutive flaps seam 160 is initiated. Referring toFIG. 5 , this increased strength occurs because theforces seam 160 are directed down from theintersection point 164. Theforces point 164 and alower point 165 on theseam 160 where theseam 160 is less likely to separate. - In another embodiment of the present invention, as shown in
FIGS. 6 and 7 , thetie bag 300 may include abag body 302 and atop edge 304 defining an opening. Thetop edge 304 may include fourflaps valleys flaps bag 300. Thetop edge 304 may transition between theflaps valleys curves bag 300 may also include afirst seam 346 in thebag body 302 that intersects thetop edge 304 at thepoint 348 of afirst valley 326. Thefirst valley 326 may include twoslits top edge 304 that extend into thebag body 302. Theslit 334 may be located on one side of theseam 346 and slit 338 may be located on the other side of theseam 346, as shown inFIG. 7 . In this embodiment, theslits top edge 304 parallel to theseam 346. In other embodiments, the slits may not be parallel to theseam 346. Thetie bag 300 may also include asecond seam 350 that intersects thepoint 352 of thethird valley 330, as shown inFIG. 6 . Thethird valley 330 may include third andfourth slits first valley 326. - Referring to
FIG. 6 , in one embodiment, thelength 335 of theslit 334 may be 0.125 to 4 inches (0.3125 to 10 cm). In another embodiment, thelength 335 ofslit 334 may be 0.125 to 1.5 inches (0.3125 to 3.75 cm). In another embodiment, thelength 335 of theslit 334 may be 0.25 to 1 inches (0.625 to 2.5 cm). In another embodiment, thelength 335 of theslit 334 may be 0.25 inches (0.625 cm). Referring toFIG. 6 , in one embodiment, thedistance 337 between theslit 334 and theseam 346 may be 0.125 to 12 inches (0.3125 to 30 cm). In another embodiment, thedistance 337 between theslit 334 and theseam 346 may be 0.125 to 2 inches (0.3125 to 5 cm). In another embodiment, thedistance 337 between theslit 334 and theseam 346 may be 0.125 to 1 inches (0.3125 to 2.5 cm). In another embodiment, the length may be 0.5 inches (1.25 cm). - Referring to
FIG. 7 , the first andsecond slits intersection point 348 of thefirst seam 346 with thetop edge 304. As the first andsecond flaps forces FIG. 7 , theflaps valley 326. As shown inFIG. 8 , because thebottoms slits intersection point 348 of theseam 346, thebottoms slits flaps forces seam 346 accordingly shift down from theintersection point 348 to anarea 349 generally level with thebottoms slits seam 346. The third andfourth slits intersection point 352 of thesecond seam 350 and thus reduce the possibility of the initiation of a tear. - In another embodiment, shown in
FIGS. 9 and 10 , thefirst valley 390 of thebag 386 may include only oneslit 388. For example, thevalley 390 may be divided into afirst side 392 and asecond side 393, and theslit 388 may be located on thefirst side 392, as shown inFIG. 9 . Having asingle slit 388 helps thebag 386 resist tears at thepoint 395 where theseam 394 meets thetop edge 387. Referring toFIG. 10 , as theflaps forces seam 394 are spread out between thepoint 395 where theseam 394 meets thetop edge 387 and alower point 391 on theseam 394. The tension at theintersection point 395 is thereby reduced and the initiation of a tear at theseam 394 is less likely. In another embodiment, theslit 388 may be located on thesecond side 393 of thevalley 390. In another embodiment, thefirst valley 390 may include multiple slits on one side of theseam 394 or on both sides of theseam 394. In another embodiment, theslit 388 of thefirst valley 390 may represent the only slit along the entiretop edge 387 of the bag. - In another embodiment of the present invention, as shown in
FIGS. 11 and 12 , thetie bag 400 may include abag body 402 and atop edge 404 defining an opening. Thetop edge 404 may include fourflaps primary peaks primary valleys Valleys valley 446 will be described.Primary valley 446 includes twosecondary valleys secondary peaks center valley 440 is located between thesecondary peaks center valley 440 may not be as deep as its surroundingsecondary valleys peaks FIG. 12 , theprimary peak 490 may include twosecondary peaks secondary valleys center peak 418 disposed between thesecondary valleys curves flaps bag 400. - Referring to
FIG. 12 , in one embodiment, thedistance 435 between the bottom of thesecondary valley 434 and the top of thesecondary peak 438 may be 0.125 to 4 inches (0.3125 to 10 cm). In a second embodiment, thedistance 435 between the bottom of thesecondary valley 434 and the top of thesecondary peak 438 may be 0.25 to 2 inches (0.625 to 5 cm). In a third embodiment, thedistance 435 between the bottom of thesecondary valley 434 and the top of thesecondary peak 438 may be 1 inch (2.5 cm). - The
bag 400 may include afirst seam 458 in thebag body 402 that intersects thetop edge 404 at apoint 460.Point 460 may be located at the bottom of thecenter valley 440 of thefirst valley 446. Thebag 400 may also include asecond seam 462 that intersects thetop edge 404 at apoint 466. Thepoint 466 may be located at the bottom of thecenter valley 442 of thethird valley 450. - Referring to
FIG. 12 , in this embodiment, theintersection point 460 of theseam 458 is not in the lowest point of theprimary valley 446, as thesecondary valleys center valley 440. Accordingly, as the first andsecond flaps force arrows FIG. 12 , the bottoms of thesecondary valleys flaps FIG. 13 , as theflaps secondary peaks center valley 440 will remain slightly raised such that theintersection point 460 of theseam 458 remains above the bottoms of thesecondary valleys forces secondary valleys point 498 on theseam 458. Theseam 458 is more resistant to tearing atpoint 498. It is therefore less likely a tear will be initiated at theintersection point 460 of theseam 458. - In another embodiment, as shown in
FIG. 14 , thebag 600 may be similar to the embodiment inFIG. 11 , but thebag 600 may include no center valleys. Theprimary valley 602 includes acenter peak 608 disposed between twosecondary valleys center peak 608 has a rounded apex and theseam 610 may intersect thevalley 602 at thecenter peak 608. This embodiment may display similar behavior and resistance against tearing of theseam 610 under strain as the embodiment depicted inFIGS. 11-13 . This embodiment may also be similarly dimensioned as the embodiment depicted inFIGS. 11-13 with respect to the distance between the bottom of the secondary valley and the top of the center peak. - In another embodiment, as shown in
FIG. 15 , thebag 620 may be similar to the embodiment inFIG. 14 , but thecenter peak 628 is flat on top. Theprimary valley 622 of thebag 620 includes acenter peak 628 disposed between two secondary valleys 624, 626. Theseam 630 may intersect theprimary valley 622 at thecenter peak 628. This embodiment may display similar behavior and resistance against tearing of theseam 630 under strain as the embodiment depicted inFIGS. 11-13 . This embodiment may also be similarly dimensioned as the embodiment depicted inFIGS. 11-13 with respect to the distance between the bottom of the secondary valley and the top of the center peak. - In another embodiment of the present invention, as shown in
FIGS. 16-18 , thebag 700 includes abag body 702 and atop edge 704 defining an opening. Thetop edge 704 may include fourflaps valleys flaps bag 700. Thetop edge 704 may transition between theflaps valleys curves first seam 740 in thebag body 702 that intersects thetop edge 704 at thepoint 742 of thefirst valley 714. Referring toFIG. 17 , theintersection point 742 of theseam 740 is not located at thelowest point 744 of thefirst valley 714. Accordingly, theintersection point 742 is located part way upcurve 724. In another embodiment, theintersection point 742 may be located alongcurve 726. Referring toFIG. 16 , Thebag 700 may also include asecond seam 746 that intersects thethird valley 718 at a point 748 part way upcurve 732, such that theintersection point 742 is not located at the lowest point of thevalley 718. - Referring to
FIG. 17 , in one embodiment, the offset 780 between thelowest point 744 and theseam 740 may be 0.125 to 12 inches (0.3125 to 30 cm). In a second embodiment, the offset 780 between thelowest point 744 and theseam 740 may be 0.5 to 2 inches (1.25 to 5 cm). In a third embodiment, the offset 780 between thelowest point 744 and theseam 740 may be 1 to 2 inches (2.5 to 5 cm). In a fourth embodiment, the offset 780 between thelowest point 744 and theseam 740 may be 1.5 inches (3.75 cm). - Referring to
FIG. 18 , as the first andsecond flaps forces flaps lowest point 744 in thefirst valley 714. Accordingly,forces lowest point 744 of thevalley 714 to the greatest tension. Theforces seam 740 to tension and which are substantially perpendicular to the seam are therefore spread out between thelowest point 744 and apoint 760 below thelowest point 744. The possibility that a tear will initiate at theintersection point 742 of theseam 740 and thetop edge 704 is thereby reduced. - All references, including publications, patent applications, and patents, cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.
- The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms “comprising,” “having,” “including,” and “containing” are to be construed as open-ended terms (i.e., meaning “including, but not limited to,”) unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
- Preferred embodiments of this invention are described herein, including the best mode known to the inventor(s) for carrying out the invention. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventor(s) expect skilled artisans to employ such variations as appropriate, and the inventor(s) intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context.
Claims (10)
1. A tie bag for storing refuse or garbage comprising;
an undulating top edge defining an opening to the bag, the top edge including,
at least two rounded flaps with two convex sides,
at least two valleys with two concave sides, each valley having a substantially flat portion which defines the bottom of the valley,
wherein the top edge is composed of alternating flaps and valleys such that each side of a valley is disposed between the flat portion of a valley and the side of a flap, and each side of a flap is disposed between a peak of a flap and a side of a valley,
wherein at least one welded or heat sealed seam intersects the top edge at the flat portion of a valley, the flat portion being effective to reduce concentration of stress on the seam by spreading over a broader area the user-generated threes associated with gripping and pulling of adjacent flaps; and
wherein the flaps may be tied together to at least partially close the bag.
2. The tie bag of claim 1 , wherein the at least one seam intersects the flat portion of a valley at or near a middle point on the flat portion.
3. The tie bag of claim 1 , wherein the top edge includes four flaps and four valleys, wherein the bag is closed by tying the flaps together in two pairs such that no flap is tied to a flap that is the next flap on either side along the top edge.
4. The tie bag of claim 1 , wherein the peaks of the flaps are flat.
5. The tie bag of claim 1 , wherein the flat portion of the valleys has a length in the range from 0.25 inches to 30 inches.
6. The tie bag of claim 1 , wherein the seam divides the flat portion of the valley into a first portion and a second portion.
7. The tie bag of claim 1 , wherein the bag includes a second welded or heat sealed seam that intersects a second valley.
8. The tie bag of claim 7 , wherein first seam and second seam are connected by a third seam.
9. A tie bag comprising:
a front panel and a back panel joined along three edges;
a top edge defining an opening, the top edge including,
at least two flaps, each flap having two convex sides, each flap having a peak,
at least two valleys, each valley having two concave sides, at least one valley having a bottom that includes a flat portion,
wherein each side of a flap connects the peak of the flap to a side of a valley and each side of a valley connects the bottom of the valley to a side of a flap, and
wherein the flaps may be tied to each other in order to at least partially close the bag;
a seam defining one of the joined edges, wherein the seam is formed by heat sealing or sonic welding and intersects the top edge at the flat portion of a valley; and
wherein the flat portion being effective to reduce concentration of stress on the seam by spreading over a broader area the use-generated forces associated with gripping and pulling of adjacent flaps.
10. The tie bag of claim 9 , wherein he flat portion has a length in the range of 0.25 inches to 30 inches.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/847,960 US20130216159A1 (en) | 2008-06-20 | 2013-03-20 | Tear resistant bag |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15836608A | 2008-06-20 | 2008-06-20 | |
US13/847,960 US20130216159A1 (en) | 2008-06-20 | 2013-03-20 | Tear resistant bag |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15836608A Continuation | 2008-06-20 | 2008-06-20 |
Publications (1)
Publication Number | Publication Date |
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US20130216159A1 true US20130216159A1 (en) | 2013-08-22 |
Family
ID=48982311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/847,960 Abandoned US20130216159A1 (en) | 2008-06-20 | 2013-03-20 | Tear resistant bag |
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US (1) | US20130216159A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3186625A (en) * | 1964-07-06 | 1965-06-01 | Harry A Mcad | Bags for milk and the like |
US4125220A (en) * | 1976-12-03 | 1978-11-14 | Suominen Heikki S | Plastic shopping bag having a reinforced handle portion |
EP0541028A1 (en) * | 1991-11-04 | 1993-05-12 | Pathold Investments Company Limited | Refuse bags |
US8444320B2 (en) * | 2005-12-30 | 2013-05-21 | The Glad Products Company | Tear resistant bag |
-
2013
- 2013-03-20 US US13/847,960 patent/US20130216159A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3186625A (en) * | 1964-07-06 | 1965-06-01 | Harry A Mcad | Bags for milk and the like |
US4125220A (en) * | 1976-12-03 | 1978-11-14 | Suominen Heikki S | Plastic shopping bag having a reinforced handle portion |
EP0541028A1 (en) * | 1991-11-04 | 1993-05-12 | Pathold Investments Company Limited | Refuse bags |
US8444320B2 (en) * | 2005-12-30 | 2013-05-21 | The Glad Products Company | Tear resistant bag |
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Legal Events
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