Classifications

• • 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
  • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
  • B65D33/22—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using heat-activatable adhesive
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
  • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
• • 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
  • B65D33/24—End- or aperture-closing arrangements or devices using self-locking integral or attached closure elements, e.g. flaps
• • 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
  • B65D2313/00—Connecting or fastening means
  • B65D2313/02—Connecting or fastening means of hook-and-loop type

Definitions

• the present invention relates to resealable bags, and, more particularly, to a bag of a flexible, frangible material, including a bottom, opposed spaced sides, and opposed spaced front and rear pieces terminating at the top and front and rear edges respectively, wherein ta perproof resealability is provided by a flap of the flexible, frangible material extending from the rear edge over the front edge and down along the front piece; a strip of adhesive disposed along the bottom edge of the flap to secure it to the front piece; a piece of cording disposed between the flap and the front piece adjacent the top of the adhesive strip with at least one end extending from between the flap and the front piece sufficiently for gripping; and, a pair of strips of a hook and loop fastening system disposed between the flap and the front piece above and adjacent to the cording with one of the pair of strips adhesively attached to the flap and the other of the pair of strips adhesively attached to the front piece whereby when the cording is pulled across the flap, the flap between the pair of strips and the strip
• Resealable bags have been known in the art for years. For example, before it became popular to sell previously ground coffee in vacuum packed cans, coffee was sold as whole roasted beans in a bag such as that generally indicated as 10 in Figure 1.
• the coffee bag 10 had metal tabs 12 extending outward from one side of the top. The two sides of the top were pinched together by folding the sides as at 14. The top of the bag was then rolled down so as to appear as in Figure 2 when viewed in the direction of arrow II in Figure 1. The metal tabs 12 were then bent around the folded-down top 16 as shown in Figures 2 and 3.
• FIG. 4 - 6 A recent attempt at a solution to the problem is shown in Figures 4 - 6.
• the bag 18 is folded over art 20 to provide abutting edges, 22, 24 adjacent the top of the bag.
• a zipper, generally indicated as 26, of the type having two sides 28, 30 carrying intermeshing plastic loop teeth 32 is attached to the abutting edges 22, 24 and covered with a sealing strip 34.
• the sealing strip 34 is peeled off of the zipper 26 as indicated by the arrow 36.
• the zipper 26 can then be opened by pulling the tab 38 and the direction of arrow 40 in the usual manner of operation for zippers.
• the tab 38 is pulled in the direction opposite arrow 40, also in the conventional manner. With the zipper 26 in its open position, the abutting edges 22,24 can be pulled apart to provide an entrance into the bag 18 as symbolized by the arrow 42 in Figure 6.
• the use of a zipper in such applications has numerous drawbacks.
• the zipper 26, as is typical, is an entity comprising its two sides 28,30 and the tab 38 which must be mounted on the teeth 32 with the teeth 32 in proper meshed relationship. This, of course, adds greatly to the complexity and cost of construction of the bag 18. Moreover, as it also well known by anyone who has used zippers, any foreign material becoming lodged in the teeth 32 will prevent proper operation of the zipper 26. The tab 38 may become completely immovable. Additionally, if the zipper 26 is assumed closed, one may find that a piece of the material contained in the bag 18 has become lodged in the teeth 32 preventing proper intermeshing. Shortly thereafter, the teeth 32 will come out of engagement and the zipper 26 completely open allowing the contents of the bag 18 to spill. Wherefore, it is the object of the present invention to provide a reclosable bag of the type described with respect to Figures 4 - 6 but eliminating the problems attendant thereto.
• novel hook and loop fastening system employed in the bag of the present invention also has independent use where it is desired to employ a hook and loop strip fastening system adhesively fastened to respective sides of a closure and wherein, delamination of the adhesive fastening during repeated opening and closing of the fastening system is desired to be avoided.
• FIG. 1 is a perspective view of a reclosable bag such as used for coffee to permit opening and grinding at the point of sale.
• Figure 2 is a view of the bag of Figure 1 as it would appear in the direction of arrow II when the top is rolled down and the tabs folded over in the locked position.
• Figure 3 is a top view of one end of Figure 2.
• Figure 4 is a front view of a prior art approach to a resealable bag employing a zipper therein.
• Figure 5 is a cutaway view of the bag of Figure 4 in the Plane V-V.
• Figure 6 shows the bag of Figure 4 in the Plane V-V as it would appear with the zipper opened and the bag opened for use.
• Figure 7 is a cutaway side elevation through the top flap portion of a bag according to the present invention.
• Figure 8 shows the bag portion of Figure 8 in the area of the resealable closing strips as the flap is being fractured by pulling of the cording.
• Figure 9 shows the bag of Figure 7 following the initial opening of Figure 8 with the sealing strip released and the flap being raised for access to the bag.
• Figure 10 is a detailed drawing in the area designated as X in Figure 8 showing the details of the unique loop and hook fastening system of the present invention.
• Figure 11 is a drawing showing the delamination problem solved by the strip fastening system of the present -invention.
• Figure 12 is a drawing similar to that of Figure 7 showing an alternate embodiment of the present invention.
• Figure 7 shows the top of a bag 44 incorporating the present invention in its preferred embodiment.
• Bag 44 while possible to manufacture as a tubular construction with a sewn bottom, can generally be described as having a bottom (not shown) , opposed spaced sides 46, and opposed spaced front and rear pieces 48,50, respectively, terminating at the top 52 in front and rear edges 54 and 56, respectively.
• Bag 44 is of a flexible, frangible material, typically multi-layer coated paper.
• a flap 58 of the same flexible, frangible material extends from the rear edge 56 over the front edge 54 and down along the front piece 48.
• a strip of adhesive 60 is disposed along the bottom edge 62 of the flap 58 to secure it to the front piece 48.
• Various forms of adhesive can be used at 60, however, adhesive of the hot melt variety is preferred for ease of manufacture.
• a piece of cording 64 is disposed between the flap 58 and the front piece 48 adjacent the top of the adhesive strip 60 with at least one end thereof extending from between the flap 58 and the front piece 48 sufficiently for gripping.
• cording, string, tape, or the like, as thus positioned can be used to fracture the flap 58 which in its originally secured position as just described acts as a tamperproof closing for the bag 44 prior to initial opening.
• other means for fracturing the flap 58 could be employed within the scope and spirit of the present invention such as providing a perforated tear strip within the flap 58 itself.
• a pair of strips 66 and 68 of a hook and loop fastening system generally indicated as 70 are disposed between the flap 58 and the front piece 48 above and adjacent to the cording 64 with strip 66 adhesively attached to the flap 58 and strip 68 adhesively attached to the front piece 48.
• the strips 66,68 be adhesively attached to the flap 58 and front piece 48 by a hot melt adhesive for ease of manufacture (however, pressure sensitive adhesives, for example, could also be used).
• the hook and loop fastening system 70, comprising strips 66,68 is of a type generally well known to those skilled in the art and, in particular, sold by the assignee of this application under the trademark VELCRO.
• the preferred embodiment of the present invention as being described incorporates a new and novel embodiment of the hook and loop fastening system 70 which will be described in greater detail shortly.
• flap 58 would then completely separate from strip 66 and the reclosability feature would be lost.
• the delaminating problem of Figure 11 is substantially 1 avoided.
• the flap 58 can be lifted as indicated by the arrow 80 in Figure 9 and and front edge 54 pulled outward in the direction of arrow 82 to provide entrance to the bag 44. Closure and resealing is, of course, a reverse of the above-described procedure.
• the front and rear edges 54,56 are pressed together and the flap 58 pulled down over the front edge 54 until the strips 66,68 can be pressed together into releasable attachment with one another.
• the hook and loop fastening 70 provides benefits of delamination resistance for other uses besides bags as hereinbefore described when it is desired to apply the strip 66, 68 with an adhesive such as hot melt, or otherwise.
• one loop strip in his case strip 66
• the other strip in this case strip 68
• an area at 92 is provided where the strips 66,68 will not adhere to one another. This is most easily accomplished by eliminating the hooks 90 in that area.
• the hooks 90 are disposed in longitudinal rows and to provide the area 92 at least one row, and preferably two or three, is eliminated.
• strip 66 in combination with the bottom of flap 58
• strip 66 can be rolled back sufficiently to allow the bottom edge of the strip 66 to the grip securely such that the strips 66,68 can be pulled out of their entangled engagement with r one another wherein the hooks 90 are entangled into the loop material 88.
• the unique hook and loop fastening system 70 as thus described can also be incorporated into an alternate embodiment of the bag of the present invention as shown in Figure 12.
• the bag 96 is of substantially the same construction as bag 44 of the preferred embodiment.
• the hook and loop fastening system 70 is moved to a point wherein one strip is attached to the front edge 54 and the other to the rear edge 56 with the above described area 92 off the top 52.
• the flap 58 was attached with the adhesive 60 as previously described and with separation means such as the cording 64 adjacent thereto. Once opened, the flap is not resealable in this embodiment but the top 52 was resealable at the front and rear edges 54,56 by means of the fastening system 70 disposed therein.
• the strip 66 and front edge 54 can be securely gripped to pull them out of engagement with the be strip 68 without causing the delamination problem of the adhesive previously described.
• the present invention not only provides a reclosable bag with improved sealing means as desired. But, additionally, an improved hook and loop fastening system for use in adhesively applied applications where delamination of the glue adhesion is avoided despite repeated openings and closings.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bag Frames (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=25152271

Family Applications (1)

Country Status (8)

Cited By (16)

Citations (8)

• 1986
  • 1986-07-31 ZA ZA865754A patent/ZA865754B/xx unknown
  • 1986-08-13 CA CA000515886A patent/CA1302973C/en not_active Expired - Lifetime
  • 1986-08-18 EP EP19860905125 patent/EP0244426A4/en not_active Withdrawn
  • 1986-08-18 WO PCT/US1986/001679 patent/WO1987002646A1/en not_active Application Discontinuation
  • 1986-08-18 AU AU62227/86A patent/AU6222786A/en not_active Abandoned
  • 1986-08-21 NZ NZ217307A patent/NZ217307A/en unknown
  • 1986-08-22 ES ES8601293A patent/ES2001567A6/es not_active Expired
• 1987
  • 1987-06-24 KR KR870700540A patent/KR870700559A/ko not_active Application Discontinuation

Patent Citations (8)

Non-Patent Citations (1)

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