摘要:
A profile strip has a closure element, made of a first material, which contains a base surface, and lateral webs or flanges extending from the base surface on each side of the closure element. An adhesive layer, made of a second material, different than the first material, is attached to the lateral webs, but not to the base surface, by co-extrusion of the adhesive layer with the lateral webs. The adhesive layer is subdivided into adhesive ribs, with each pair of the two adjacent ribs separated from each other by an adhesive-free area. Sub-dividing the adhesive layer into ribs separated by an adhesive-free area substantially eliminates the deformation of the lateral webs when they--and the adhesive ribs--are cooled after the coextrusion.
摘要:
A zipper for a recloseable bag provides a heat-settable portion for adhering the zipper to a polymeric bag at a temperature below that known in the art in order to prevent permanently sealing the bag closed inadvertantly. The zipper includes elongated base strips having flange portions for adhering the inner surface of the base strip to the outer surface of a polymeric bag. The base strip is adhered to the polymeric bag by a heat-setting compound coextruded, coated or laminated to the inner surface of the flange. The flange portions may be thinner than other portions of the base strips to permit the flange portions to be fused to the polymeric bag at a lower temperature than previously practiced.
摘要:
Polymeric containers that have a container body and a removable and replaceable lid configured for sealing engagement with the body. The sealing arrangement between the container body and the lids includes a discontinuity feature that provides a passage for fluid from the exterior of the container to the sealing arrangement, which reduces the forces needed to open (e.g., unseal) or vent the container. The containers are often thermoformed, and might be considered “disposable” containers.
摘要:
A zipper for a recloseable bag provides a heat-settable portion for adhering the zipper to a polymeric bag at a temperature below that known in the art in order to prevent permanently sealing the bag closed inadvertantly. The zipper includes elongated base strips having flange portions for adhering the inner surface of the base strip to the outer surface of a polymeric bag. The base strip is adhered to the polymeric bag by a heat-setting compound coextruded, coated or laminated to the inner surface of the flange. The flange portions may be thinner than other portions of the base strips to permit the flange portions to be fused to the polymeric bag at a lower temperature than previously practiced.
摘要:
A package header arrangement includes a header with first and second opposing films, a tear bead and a support member. The support member is attached to the first film below the tear bead. The tear bead is disposed between the first and second films. When heat and pressure are applied to the first and second films in proximity to the tear bead, the tear bead scores the first and second films creating a breakable tear bead line. When heat and pressure are applied, the tear bead pushes aside the inner layer of the first and second films, weakening the film along the breakable tear bead line without harming the hermetic seal provided by the films. The breakable tear bead line tears easily because it does not have the tough, flexible inner layer of the films to aid in tear resistance. The breakable tear bead line also provides an even tear along a straight line. The support member provides support while tearing along the breakable tear bead line.
摘要:
The present invention sets forth a profile sealing strip having a lateral flange and a sealant layer. The lateral flange includes a first section, a second section, and a middle section being disposed between and connected to the first and second sections. The closure portion has a base connected to the middle sections and protruding beyond the upper surfaces of the first and second sections. The structure of the sealant layer and the lateral flange are modified so as to reduce the curl experienced during the cooling process after the lateral flange and the sealant layer are attached to one another.
摘要:
A recloseable container features webs or flanges near the container opening and outwardly from recloseable locking strips, coextensive with the opening, to provide improved roughened surfaces enabling the user to write on these webs information pertaining to the bag contents. The webs may be formed with a roughening agent to create the roughened surfaces. The locking projections of at least one of the closure elements is formed with a slip agent to facilitate lubricated mating engagement with the other locking projection.
摘要:
A container has a pair of side walls for defining a container interior and at least one open end. The container also includes a reclosable sealing device including a first locking member and a second locking member, each formed with a web respectively extending along the side walls adjacent the open end. The first and second locking members are repeatedly matable so that upon mating engagement of the first and second locking members along their substantially entire lengths, the open end is substantially entirely closed. Visual indicia means are provided by printing automatically and directly applied along substantially an entire length of an outer surface of at least one of the first and second locking members to present various graphics for identity or aesthetic purposes and facilitate locating and closing the sealing device.
摘要:
Methods for positioning a mounted slider device on a recloseable package include inoperably mounting the slider device onto the closure arrangement and contacting the inoperably mounted slider device with a surface to operably position the slider device on the reclosable closure mechanism. Methods of manufacturing recloseable packages include providing a package, a recloseable closure mechanism, and a slider device. Attaching the recloseable closure mechanism to the package. Mounting the slider device on the recloseable closure mechanism and contacting inoperably mounted slider devices with a surface to operably position the slider device on the recloseable closure mechanism.
摘要:
A method of manufacturing a resealable closure mechanism includes separately extruding the interlocking closure member from its respective base strip. The interlocking closure member is cooled prior to bonding the base strip to the interlocking closure member. Bonding is accomplished by either heat sealing, adhering, pouring molten polymeric material, or ultrasonic sealing.