Zippered Resealable Closure

Zipper profile for a fastener assembly is provided. The profile includes a male element and a female element. The female element has a pair of jaws which are movable with respect to one another about a standard fulcrum region, and a pair of arms each of that are coupled to a corresponding one of many pair of jaws at the fulcrum region.

Short Wavy Wigs Brazilian Human Virgin HairEach of the arms has an end opposite from the fulcrum region that’s shaped for engagement with a slider, and the jaws have an open position and a closed position. The arms are disposed to cause movement of the jaws between the closed position and the open position when the arms experience displacement concerning the fulcrum region. Displacement in regards to the fulcrum region could also be effectuated by motion of a slider relative to the arms. The male element is captured by the female element when the jaws are in the closed position and released when the jaws are within the open position.

Resealable closure assemblies have become a fixture of the storage container industry. Thermoplastic bags, in particular, have gone through several stages of closure devices.

It is understood within the prior art to supply plastic bags with mating profiles, in order that a bag could also be sealed by applying force with the fingers to cause the profiles to mate and un sealed by applying force with the fingers to cause the profiles to disengage.

Slider assemblies are also known for achieving sealing and unsealing of suitably fitted plastic bags. Use of a slider facilitates sealing and unsealing of such plastic bags. Slider assemblies include profile strips with male and female elements working in cooperation with a slider that straddles the top of the strips. The slider serves to join the male and female elements together when drawn in one direction, and to separate the profiles when drawn in the other direction. Generally, the weather are forced apart, one element at a time, by a separating finger on a top inside panel of the slider.

In a primary embodiment, a zipper profile for a fastener assembly includes a male element and a female element. The female element has a pair of jaws which can be movable with respect to one another about a standard fulcrum region. The female element also has a pair of arms each of which is coupled to a corresponding one of many pair of jaws on the fulcrum region. Each of the arms has an end opposite from the fulcrum region that’s shaped for engagement with a slider. The jaws have an open position and a closed position, and the arms are disposed to cause movement of the jaws between the closed position and the open position when the arms experience displacement in regards to the fulcrum region. Such displacement concerning the fulcrum region is effectuated by motion of the slider relative to the arms. The male element is captured by the female element when the jaws are within the closed position and released when the jaws are within the open position.

In this embodiment, the slider cross section has a top and a bottom, and first and second channels could also be disposed within the cross section so that they’re vertically offset from one another. Additionally, the separation between the channels may remain constant in a second region near the trailing end of the slider, and the separation may increase progressively in a first region near the leading end of the slider, with the separation being relatively greater at the leading end. The primary channel may also (or alternatively) decrease in width progressively within the second region (the width being relatively greater near the trailing end) and remain at a substantially constant width in the primary region.

In accordance with another aspect of the invention, a technique of removably fastening a first side panel to a second side panel is provided. The first side panel has a primary profile strip that includes a female element having a pair of jaws, the jaws having an open position and a closed position and being actuatable by longitudinal motion of a slider, and the second side panel has a second profile strip that includes a male element. The tactic of this embodiment includes providing a slider longitudinally movable relative to the strips. A first longitudinal region of the slider is used to maintain the jaws in an open position while causing the male element to be displaced into the jaws, and a second longitudinal region of the slider is used to cause the jaws to move from an open position to a closed position. The slider is slid longitudinally along the strips so that the strips transition right into a state wherein, along at the least a portion of the strips, the male element is inside the jaws and the jaws are closed.

In accordance with an additional embodiment of the invention, a technique for manufacturing a fastener assembly includes providing a first profile strip with a female element having a pair of arms, each of the arms having an distal end shaped for engagement with a slider. A second profile strip with a male element having an end region for engagement with the slider can also be provided, in addition to a slider that has a first side leg depending from one end of a top portion and a second side leg depending from an opposite end of the top portion. The end region of the male element is nullified for a length greater than the length of the slider, and a top arm of the female element can be nullified for a length greater than the length of the slider. A lower end of the primary side leg of the slider is engaged with a bottom arm of the female element, and the highest portion of the slider is rotated until the slider straddles the profile strips.

In an additional embodiment, the strategy includes providing a first side panel and a second side panel, the primary side panel depending from a lower jaw of the female element and the second side panel depending from the male element. After rotating the highest portion of the slider, the slider is moved along the profiles to interact the uncut arms of the female profile and the top region of the male portion. The method also includes cutting through the profiles and panels to form components of a resealable enclosure.

In accordance with another embodiment of the current invention method for forming profile strips for a resealable closure includes extruding a molten material through a die. The die has an opening that approximates the shape of a desired profile. The molten material is drawn away from the die such that the molten material falls right into a water bath. The molten material is then sized in the water bath. The molten material could also be sized by a sizing device having a first portion for placing external bounds on the molten material and a second portion for preserving an interior space of the molten material.

Similarly, the slider could also be die cast as a complete piece or produced in various pieces and assembled. The slider may even be formed with an injection procedure or molded in any suitable fashion.

It ought to be understood that various zipper changes and modifications to the preferred embodiments described above will also be apparent to those skilled within the art. Modifications will be made without departing from the spirit and scope of the invention and without diminishing its attendant advantages. It’s therefore intended that such changes and modifications be covered by the next claims.

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