Abstract: A closure device providing a visual confirmation of occlusion. The closure device includes a first and a second interlocking fastening strips which are arranged to be interlocked over a predetermined length, at least one of the fastening strips having a surface alteration providing visual confirmation of occlusion of the closure device. The surface alteration may be a slit which opens or closes upon occlusion of said closure device. In one embodiment, the surface alteration may extend into a coextruded portion. The color of the coextruded portion is exposed when the surface alteration is open and hidden when the surface alteration is substantially closed.

Abstract: A venting closure mechanism for a pouch includes first and second closure profiles that interlock and third and fourth closure profiles that interlock. A sealing flap extends from the first closure element between the first and third closure profiles and engages the second closure element to form a releasable gastight seal therebetween. When the first and second closure elements are occluded, a first plurality of longitudinally spaced first exhaust channels is disposed on a product-side of the sealing flap and a second plurality of longitudinally spaced second exhaust channels is disposed on a user-side of the sealing flap. A first pouch sidewall is attached to the first closure element at an exterior surface thereof between a user-side edge of the first closure element and the sealing flap. An interior surface of the first pouch sidewall is textured with a pattern that provides flow channels therealong.

Abstract: A docking seal system has a first flexible enclosure with a first coupling seal and a second flexible enclosure with a second coupling seal. Each of the coupling seals has first and second sealing strips. A first zip slide is engageable with the first and second sealing strips of the first coupling seal and a second zip slide is engageable with the first and second sealing strips of the second coupling seal so that the respective first and second coupling seals can be opened and closed. The first and second zip slides are each combined with a respective portion of a coupling slide to form respective combined slides. When the combined slides are combined together, the respective portions of the coupling slides mate together to form the coupling slide, the coupling slide engaging or disengaging the first and second coupling seals so as to dock or separate the first and second flexible enclosures from one another.

Abstract: A continuous, progressive, flexible closure formed with rows of opposed keys whose engagement and disengagement is normal to the plane of closure. The closure may include a plurality of first keys, a plurality of second keys, and a slider configured to engage and disengage opposed keys, e.g., by joining and separating protrusions on one set of keys with openings on the second set of keys. Engagement of opposed pairs may be independent of engagement of neighboring pairs, which may increase useful life of the closure. Additionally, first and second keys may have variable relative geometries which, when considered with alignment of skirts in the plane of closure, may allow closure to follow a bend or curve without generally changing the peripheral distance of the opposed rows.

Abstract: A reclosable zipper is provided having first and second opposing profiles forming at least one pair of opposing flanges. The flanges have cutouts, such as notches or apertures, disposed adjacent to side edges of the profiles so as to define at least one pair of cutouts. When the profiles are sealed to opposing inner surfaces of package panels, portions of the panels seal to each other through the at least one pair of cutouts, providing a reinforcing structure to opposing ends of the zippers, thereby preventing the zipper ends from separating upon opening the package.

Abstract: A seal base, which is thicker than a thick portion and is bondable to an inner surface of a bag body, is continuously connected to one of belt-like bases of a zipper tape via a belt-like cutting portion that is thinner than the thick portion and separates a containing space from an outside. A first linking portion having a first corner (a) is defined by a cutting outer surface of the cutting portion and a seal outer continuous surface of the seal base. A second linking portion having a second corner (b) is defined by a contained cutting surface of the cutting portion and a contained seal continuous surface of the seal base.

Abstract: The present disclosure relates to a high burst slider zipper which allows for bottom filling of reclosable packages, such as large bags, and further provides increased resistance to damage from the dropping or shock loading of the filled package. This is achieved by providing a peel seal or other frangible or separable connection between the zipper profiles, and by sealing a portion of one of the flanges to itself by a hard seal above the peel seal. This causes the external forces on a bag from bottom filling or shock loading to be directed toward the hard seal and further directed so as to cause a shear force against the peel seal, thereby increasing the resistance of the package to external forces.

Abstract: A method of continuously manufacturing a hermetic plastic zipper wherein the plastic zipper has a readily peelable plastic layer prolonging in a lengthwise direction of the plastic zipper, the readily peelable plastic layer is welded using ultrasonic wave so that the peeling intensity of the welded portion is within a certain range, the method is characterized in that while the engaging portions are brought into a engaged state, the portion of the plastic zipper where the readily peelable plastic layer exists is inserted between an ultrasonic horn and an anvil, and the readily peelable layer is welded by using ultrasonic wave under a condition wherein the distance L between the ultrasonic horn and the anvil is uniformly held at an distance of H?L?0.85H wherein H stands for a maximum thickness of the plastic zipper under the engaged state.

Abstract: A slider is adapted for use with a reclosable fastener for bags containing material. The reclosable fastener includes a first track and a second track. The first track includes a first profile, while the second track includes a second profile. The first and second profiles are releasably engageable to each other. At least one of the first and second profiles has an interior portion. The slider comprises a body that includes a top, a first side, a second side and a separation member on an underside of the top. The separation member is adapted to open and close the fastener and includes a slider finger that extends generally downwardly from the top. The slider finger extends into an interior portion of the first profile so as to assist in removing material trapped in the interior portion of the first profile when closing the reclosable fastener.

Abstract: A zipper assembly for a reclosable package or bag is disclosed. The zipper assembly includes two profiles with flanges and internal interlocking elements on the interior of the flanges. The exterior of one of the flanges includes two exterior parallel press-to-close profile-like interlocking elements which are brought into engagement with each other by folding the flanges of the zipper assembly. This increases the burst handling capability of the zipper assembly and the package or bag to which it is attached. Alternatives include substituting a peel seal for the exterior interlocking element as well as an exterior label or sticker to maintain the flanges in a folded configuration.

Abstract: A fastening system is provided that interconnects and disengages two fastening members. Further, a method of sealing the two fastening members is provided wherein a device that is adapted to separate adjoined fastening members is also used to create an obstruction between the fastening members to prevent the free flow of liquid and/or gas.

Abstract: A slide fastener assembly and method of attachment allows for simple installation or replacement of molded slider assemblies, metal zipper assemblies, or both or either halves of separating zipper assemblies. A cohesive fastener is attached to the leading edges of surfaces where a slide fastener is connected. A corresponding cohesive fastener is attached to either surface of a zipper tape of a slider assembly. The slider assembly is pressed together with corresponding cohesive surfaces where the slide fastener is to be connected, holding the slide fastener securely in place. In another embodiment, a slide fastener is manufactured with cohesive material that is integral to the zipper tape. In another embodiment, a slide fastener is attached by connection means to a band, which is connected to an outer perimeter of a frame and inner perimeter of a panel.

Abstract: A zipper closure system for allowing one hand zipping of objects requiring sufficient compressive force to close is provided. The zipper closure system comprises a set of tracks having a row of teeth adapted to mate with each other, a plurality of sliders that are adapted to move along the row of teeth, a connector system comprising a plurality of extenders attached to the pull tabs that allow a user to move the plurality of sliders along the row of teeth, and a connector attached to a third pull tab, where the connector links the third slider with the first and second sliders. The zipper system further includes at least one pull ring and a stopping member.

Abstract: A slider is provided with an outer guide which closes a zipper by sliding movement of the slider and an inner guide which opens the zipper by the sliding movement and which is formed revolvable on the outer guide, and a method for supplying sliders is provided wherein the sliders are not entangled with each other and are not clogged when they are supplied under a condition wherein the inner guide is revolved to the outside. The slider 10 being supplied has a groove 13c formed by an inner guide 13 protruding upwards from the upper surface 12c of a slider body 11 and extending in parallel with an axis A, a flat guide plate 40 which is disposed between a slider supplying machine and a slider assembling machine engages with the groove 13c so that the upper surface 12c directs in a vertical direction and at the same time, side surfaces 12d of adjacent sliders support the slider 10 facing each other in a hanging down condition, and align and guide them in a line in a fixed direction.

Abstract: A device for forming a seal includes upper and lower seal members, and a slider, wherein mating surfaces of the seal members interlock. In at least one embodiment, a lifting rib and closure bar on the slider cooperate with a lifting wing and closure bar groove on the upper and lower seal members, respectively. By moving the slider in one direction, the lifting rib lifts the upper seal member from the lower seal member. Moving the slider in the opposite direction causes the upper and lower seal members to interlock. In another embodiment, a slider has an intermediate lateral member connected on one side the slider top, and connected on the other side to the slider bottom. A breakaway sealing device is also provided, allowing a person to break the closed seal. A beginning stop block is also provided that includes a means for securing the upper seal member.

Abstract: The disclosure relates to a slider and a reclosable zipper, particularly a zipper with first and second profiles for watertight vessels, packages or similar devices. The slider is generally C-shaped with an upper arm, a lower arm, and a support wall in between. The support wall includes a groove which captures a rail formed on the first profile so that the slider can slidably move along the rail, riding the first profile. The lower arm includes separator blades which separate the first and second profiles when the slider is moved in the opening direction so as to urge the second profile between the upper and lower arms. When the slider is moved in the closing direction, the second profile travels between the upper and lower arms and is urged into engagement with the first profile by the upper arm. At the final closing position, the slider is stabilized or parked within a cut-out portion of the second profile.

Abstract: A slider is adapted for use with a reclosable fastener for bags containing material. The reclosable fastener includes a first track and a second track. The first track includes a first profile, while the second track includes a second profile. The first and second profiles are releasably engageable to each other. At least one of the first and second profiles has an interior portion. The slider comprises a body that includes a top, a first side, a second side and a separation member on an underside of the top. The separation member is adapted to open and close the fastener and includes a slider finger that extends generally downwardly from the top. The slider finger extends into an interior portion of the first profile so as to assist in removing material trapped in the interior portion of the first profile when closing the reclosable fastener.

Abstract: The present disclosure relates to a leakproof or leak-resistant slider zipper for reclosable packages or bags wherein the zipper profiles include upper flanges which are captured within horizontal channels of the slider. The horizontal channels are configured to be closer to each other at the closing end than at the opening end so as to urge the zipper profiles together at the closing end and apart at the opening end. The zipper profiles further include complementary interlocking elements as well as a lower bead and flap configuration wherein the flap remains urged against the bead in a leakproof or leak-resistant configuration throughout the entire length of the slider.

Abstract: A slider actuated closure mechanism includes internal projections that extend from interior sides of closure elements and retention members that extend from exterior sides of the closure elements. A slider is disposed over the first and second closure elements and includes first and second sidewalls each including a shoulder inwardly extending from a distal end thereof. When the slider is disposed over the first and second closure elements, the first sidewall and the first closure element are minimally horizontally separated by a distance d1, the second sidewall and the second closure element are minimally horizontally separated by a distance d2, and the internal projections are horizontally separated by a distance d3. The sum of the distances d1, d2, and d3 equals a total non-zero distance, dt, that is less than a length that each of the shoulders inwardly extends from the respective first and second sidewalls.

Abstract: The present invention relates to a fastener or closure assembly for fitting to a sheet or to the mouth of a packaging bag, and comprising at least one fastener or closure strip formed by a support web and a fastener or closure element carried by the web, the assembly including sequential cuts occupying a fraction of the width of the support web of the strip, outside the fastener or closure element and distributed over the length of the assembly in order to suppress the effects of warping, curving, or curling of the assembly.

Abstract: The present disclosure relates to a slider zipper including first and second interlocking profiles with female and male interlocking elements. The female interlocking element is formed from two extending arms which are sufficiently spaced so as to receive the male interlocking element while maintaining an open space therebetween in order to accommodate powdered or granular products between the interlocking profiles. The first and second interlocking profiles further include complementary fulcrum elements to allow the slider walls to pivot the interlocking profiles into and out of engagement. The slider further includes interior surfaces which engage retaining shoulders of the interlocking profiles to displace the interlocking profiles with respect to one another.

Abstract: A closure device providing a visual confirmation of occlusion. The closure device includes a first and a second interlocking fastening strips which are arranged to be interlocked over a predetermined length, at least one of the fastening strips having a surface alteration providing visual confirmation of occlusion of the closure device. The surface alteration may be a slit which opens or closes upon occlusion of said closure device. In one embodiment, the surface alteration may extend into a coextruded portion. The color of the coextruded portion is exposed when the surface alteration is open and hidden when the surface alteration is substantially closed. In another embodiment, the surface alteration may extend into an edge glow material which produces an edge glow effect when the surface alteration is open. In a third embodiment, the surface alteration may extend through an opaque side wall to expose the color of the base.

Abstract: A device for forming a seal includes upper and lower seal members, and a slider, wherein mating surfaces of the seal members interlock. In at least one embodiment, a lifting rib and closure bar on the slider cooperate with a lifting wing and closure bar groove on the upper and lower seal members, respectively. By moving the slider in one direction, the lifting rib lifts the upper seal member from the lower seal member. Moving the slider in the opposite direction causes the upper and lower seal members to interlock. In another embodiment, a slider has an intermediate lateral member connected on one side the slider top, and connected on the other side to the slider bottom. A breakaway sealing device is also provided, allowing a person to break the closed seal. A beginning stop block is also provided that includes a means for securing the upper seal member.

Abstract: A pouch includes an elongate closure mechanism having upper and lower pairs of opposing interlocking profiles and a slider for opening and closing the closure mechanism. The slider includes upper closure bars vertically and longitudinally spaced from lower closure bars for occluding the upper and lower opposing interlocking profiles, respectively, and a separator member for separating only the upper opposing interlocking profiles. The lower closure bars are disposed at the opening end, and the upper closure bars are disposed at a closing end of the slider opposite the opening end. A longitudinal retention member extends longitudinally from the separator finger toward the closing end below the upper closure bars, and a lateral retention member extends laterally outwardly from the separator member above the lower closure bars. The longitudinal retention member and the lateral retention member each engages an underside of the upper pair of interlocking profiles to help retain the slider on the closure mechanism.

Abstract: A closure assembly useable with a pouch or bag includes an elongate seal assembly and a slider. The seal assembly includes upper and lower interlocking profiles and a rib disposed between the interlocking profiles on at least one side of the seal assembly. The slider includes forward closure bars at a first end and a separator finger and lower closure bars adjacent to an opposing second end. The forward and lower closure bars occlude the upper and lower interlocking profiles. The separator finger extends between the upper interlocking profiles and presses outwardly against the rib to de-occlude the lower interlocking profiles. The lower interlocking profiles can be occluded along substantially an entire length thereof. The slider also includes a retention plate and pressing members, which operatively retain the slider on the seal assembly and may increase the opening force created by the separator finger against the rib.

Abstract: The present disclosure relates to a zipper for a reclosable package or bag and a method of forming thereof, wherein aligned apertures are cut into the zipper flanges proximate to the slider position when the package or bag is open. Portions of the front and rear walls of the package or bag extend through these apertures during the original manufacture of the bag, and are sealed to each other during the same sealing operation which seals the front and rear walls of the package or bag to the flanges of the zipper. The resulting seal between the front and rear walls, extending through the apertures in the zipper flanges, prevents the zipper profiles from opening in the portion where the slider is positioned when the reclosable package or bag is open.

Abstract: A closure device providing a visual confirmation of occlusion. The closure device includes a first and a second interlocking fastening strips which are arranged to be interlocked over a predetermined length, at least one of the fastening strips having a surface alteration providing visual confirmation of occlusion of the closure device. The surface alteration may be a slit which opens or closes upon occlusion of said closure device. In one embodiment, the surface alteration may extend into a coextruded portion. The color of the coextruded portion is exposed when the surface alteration is open and hidden when the surface alteration is substantially closed. In another embodiment, the surface alteration may extend into an edge glow material which produces an edge glow effect when the surface alteration is open. In a third embodiment, the surface alteration may extend through an opaque side wall to expose the color of the base.

Abstract: A closure assembly with a slider is provided to open and close a resealable package. The closure assembly includes one or more pair of opposing interlocking profile elements and a rib optionally disposed between the interlocking profile elements of at least one side of the closure assembly. The slider includes opposing sidewalls and a top wall, with a separator member and a retention member extending from the top wall and closure members and hinged engagement members extending from the opposing sidewalls.

Abstract: A zipper closure system for allowing one hand zipping of objects requiring sufficient compressive force to close is provided. The zipper closure system comprises a set of tracks having a row of teeth mate-able with other, a plurality of sliders that are adapted to move along the row of teeth, a connector joining the plurality of sliders and allowing the user to move the plurality of sliders along the row of fasteners. The zipper system can further comprise a pull ring, and a stopping means.

Abstract: A bag including two generally parallel sheets forming the main walls of the bag, complementary closure strips fixed to respective ones of the sheets, and a cursor for actuating the strips for closing and opening purposes. The bag further includes, parallel to the closure strips, between the sheets, and level with the mouth of the bag, additional structure in relief disposed on the insides of the closure strips, designed to provide sealing by forming a barrier between the sheets in the closed position of the bag, the additional structure in relief being placed facing the flanks of the cursor to be urged towards their sealing position by the cursor when the cursor is moved towards the sealing position.

Abstract: A closure assembly includes a slider for opening and/or closing an elongate closure mechanism including a pair of opposing closure members. The slider includes a first separator finger and a second separator finger, each of which is articulably connected to a hinge member. The first and second separator fingers extend between the closure members and may be articulated between a closing position, in which the separator fingers are adjacent each other, and an opening position, in which the separator fingers are laterally spaced from each other. In the opening position, the separator fingers urge the members apart. Closing bars and retention members may also be included to facilitate re-closing the closure members and retaining the slider in an operative position thereon.

Abstract: The present disclosure relates a leakproof or leak-resistant zipper with profiles which include an inter-engaging element with inter-engaging fingers and a leakproof or leak-resistant structure. The slider, when moved in the closing direction, urges the fingers of one profile to inter-engage with the fingers of the other profile and further urges the elements of the leakproof or leak-resistant structure into engagement with each other. The slider, when moved in the opening direction, separates the inter-engaging fingers of the inter-engaging elements and further allows the elements of the leakproof or leak-resistant structure to separate.

Abstract: The zipper profiles have a complex shape, such as a double zipper configuration. The apparatus for the manufacture thereof includes an extrusion die and further includes a main or primary extruder for the supply of material, such as low density polyethylene, to form the tubing for the manufacture of reclosable packages, bags or pouches. The apparatus further includes at least one secondary extruder, or co-extruder, for the extruding of each reclosable profile onto the tubing. The speed of the co-extruders is controlled so as to control the extrusion of the reclosable profiles.

Abstract: A reclosable slider zipper is disclosed wherein the profiles have several interlocking ribs thereby allowing the profiles to be interlocked in various alignments. A slider is provided to open and close the reclosable slider zipper. This results in increased reliability in alignment of the profiles during manufacturing processes and similarly results in increased smoothness and tactile feel for the consumer.

Abstract: A metallic double-sided element comprising a coupling head includes: thin flat plate portions; coupling convex portions projecting at a central portion in the right-left direction of the thin flat plate portion; right and left raised portions which are raised in the front surface-rear surface direction from the thin flat plate portion disposed on the right and left sides of each of the coupling convex portions and integrated with the body portion; and a coupling concave portion which is formed surrounded by the coupling convex portion, the right and left raised portions and the body portion, wherein each of the right and left raised portions has a slope portion which is inclined from a front edge toward the body portion such that the slope portion rises thereof, part of each side face of the right and left slope portions is integrated with part of right and left side faces of the coupling convex portion in a face bonding manner.

Abstract: A method of making slider end stops on zippers comprising two interlockable profiled closure members. The method comprises the steps of: opening a section of a zipper tape to form a gap between the profiled closure members; inserting a first portion of a body into the gap with a second portion of the body projecting above the tops of the profiled closure members; and joining the first portion of the body to adjoining sections of the profiled closure members. Then the body is narrowed down the middle to form a neck where the zipper tape will later be cut, each half of the body forming a respective slider end stop, but on different zipper segments. Alternatively, two bodies can be inserted into the gap and then joined to adjoining sections of the closure members. The zipper tape is cut between the two bodies, which will ultimately form respective slider end stops on different zipper segments. In an alternative embodiment, the zipper tape and the bag making film can be integrally formed.

Abstract: A device for forming a seal includes upper and lower seal members, and a slider, wherein mating surfaces of the seal members interlock. In at least one embodiment, a lifting rib and closure bar on the slider cooperate with a lifting wing and closure bar groove on the upper and lower seal members, respectively. By moving the slider in one direction, the lifting rib lifts the upper seal member from the lower seal member. Moving the slider in the opposite direction causes the upper and lower seal members to interlock. In another embodiment, a slider has an intermediate lateral member connected on one side the slider top, and connected on the other side to the slider bottom. A breakaway sealing device is also provided, allowing a person to break the closed seal. A beginning stop block is also provided that includes a means for securing the upper seal member.

Abstract: A docking seal system has a first flexible enclosure with a first coupling seal and a second flexible enclosure with a second coupling seal. Each of the coupling seals has first and second sealing strips. A first zip slide is engageable with the first and second sealing strips of the first coupling seal and a second zip slide is engageable with the first and second sealing strips of the second coupling seal so that the respective first and second coupling seals can be opened and closed. The first and second zip slides are each combined with a respective portion of a coupling slide to form respective combined slides. When the combined slides are combined together, the respective portions of the coupling slides mate together to form the coupling slide, the coupling slide engaging or disengaging the first and second coupling seals so as to dock or separate the first and second flexible enclosures from one another.

Abstract: A reclosable package comprising a receptacle and an assembly, the assembly comprising a plastic zipper joined to or integrally formed with the receptacle and a slider mounted to the zipper. The zipper comprises first and second interlockable profiled closure members, and a slider end stop projecting outward from a side of the first closure member for a distance sufficient to obstruct further travel of the slider in a closing direction. The slider end stop comprises a body of plastic material joined to the first closure member, the body being disposed near one end of the zipper and entirely within an elevational range bounded by top and bottom edges of the first closure member.

Abstract: A reclosable package comprises a slider-operated zipper wherein at least one of the zipper parts has a hinged flap to which a marginal portion of a panel of packaging film is joined. The hinged flap swings away from the rest of the zipper part in response to a pulling force tending to pull that zipper part away from the other zipper part. The flap is disposed between a base strip of the zipper part that it forms a part of and a sidewall of the slider. The slider is retained on the zipper by retaining ledges projecting from a distal end of a plow that pries open the zipper during slider travel in an opening direction.

Abstract: The present disclosure relates to a slider zipper including first and second interlocking profiles with female and male interlocking elements. The female interlocking element is formed from two extending arms which are sufficiently spaced so as to receive the male interlocking element while maintaining an open space therebetween in order to accommodate powdered or granular products between the interlocking profiles. The first and second interlocking profiles further include complementary fulcrum elements to allow the slider walls to pivot the interlocking profiles into and out of engagement. The slider further includes interior surfaces which engage retaining shoulders of the interlocking profiles to displace the interlocking profiles with respect to one another.

Abstract: The present disclosure relates to a leakproof or leak-resistant slider zipper for reclosable packages or bags wherein the zipper profiles include upper flanges which are captured within horizontal channels of the slider. The horizontal channels are configured to be closer to each other at the closing end than at the opening end so as to urge the zipper profiles together at the closing end and apart at the opening end. The zipper profiles further include complementary interlocking elements as well as a lower bead and flap configuration wherein the flap remains urged against the bead in a leakproof or leak-resistant configuration throughout the entire length of the slider.

Abstract: A flexible reclosable container including profiles which are locked and unlocked by a slider. One embodiment of the slider has a pair of feet which extend from one end of the slider to the other end and which resist pulling of the slider off of the profiles. Another embodiment of the slider has three spaced pairs of feet which resist removal of the slider from the profiles. The slider in one embodiment has an enlarged central portion which facilitates grasping the slider and is easy to manufacture by die casting.

Abstract: This invention discloses a resealable bag. The resealable bag includes a first and second panel joined together to define an enclosed region, a closure mechanism having first and second closure profiles, a slider for selectively opening and closing the closure mechanism, and a spreader for separating the first and second closure profiles.

Abstract: A fastener strip, such as would be used in a reclosable container, comprises a sealing member having a plurality of sealing portions configured to engage complementary sealing portions of a complementary fastener strip. At least one sealing portion comprises one or more finger members extending therefrom. The at least one finger member, by engaging a complementary sealing portion of a complementary fastener strip, provides an additional degree of sealing, particularly when the fastener strips are in a partially engaged condition. A slider comprises top and side walls and inwardly facing flanges, preferably at lower ends of the side walls. The inwardly facing flanges define a gap having dimensions such that the sealing members of the opposing fastener strips, and particularly the sealing portion having the at least one finger member and its complementary sealing portion, are urged together to provide an additional degree of sealing, yet not completely interlocking, engagement.

Abstract: The present invention provides a recloseable bag, the bag having a mouth and including a closure at the mouth, the closure having a first end and a second end. The recloseable bag also includes a first crushed section at the first end of the closure, the closure further including an intact portion. It also includes a first transition area between the first crushed section and the intact portion, and a sealing material in the first transition area.

Abstract: The zipper includes flanges which include an oxygen scavenging polymer. The oxygen scavenging polymer can be a co-extruded layer or blended with other polymers. The oxygen scavenging polymer is activated by ultra-violet light prior to installation by a form fill seal apparatus. This zipper is particularly useful in reducing residual oxygen in the packaging of such food products as cheese and meat, thereby extending the shelf life.

Abstract: A reclosable plastic bag (10) having two panels (15) of plastics sheet or film joined to, or integral with, each other, or a combination of both, to define a bag with an opening (13), with separable fastening means (14) of one or more interengagable elongate fib/groove configurations (14a, 14b) are provided to close the opening (13). A slider (100) is positioned in straddling relationship to the fastening means, and includes a support member (111) over-lying the opening to the bag and straddling the fastening means, and also carrying a separating finger (112) to engage with and separate the fastening means when the slider is moved to a first end of the fastening means in a bag opened condition, and a pair of legs (113) extending from said support member to force the fastening means into interengaging relationship when the slider is moved to a second end of said fastening means in a bag closed condition. Flanges (119) on the legs extend beneath the fastening means to retain the slider on the bag.

Abstract: A foldable plastic slider for straddling relation with a plastic fastener includes first and second profiles. The straddling slider is adapted to close or open the fastener by movement therealong. The slider comprises a transverse support member, first and second legs, first and second separating fingers, and first and second wings. The first and second legs depend from the respective first and second opposing sides of the support member. The first and second separating fingers extend from an interior surface of the support member. The first separating finger is adapted to open the first and second profiles. The first and second wings have respective first and second openings for receiving the respective first and second legs. The first and second wings are hingedly attached to the support member, and latches on each wing engage a respective one of the legs.

Abstract: The invention generally relates to interlocking closure devices including two closure elements arranged to be interlocked over a predetermined length. The closure elements permit the venting of fluids when the closure elements are in their occluded vented position. The closure elements have an occluded closed position which creates a seal and prevents fluids from passing between the interlocking closure elements. The closure fastening device may be utilized with a flexible container and is advantageous in permitting a user to vent excess air from the interior of the flexible container prior to sealing the container.