摘要:
A tray for foodstuffs or the like having a continuous edge rim and a flexible cover placed over the top of the tray and sealed to the rim with an elongate continuous interlockable separate rib and groove profile on strips sealed to the surface of the cover wherein upstanding pull flanges above the rib and groove profiles may be pulled apart and the cover severed between the profiles for access to the contents so that the cover may be opened and closed.
摘要:
A bag with an openable mouth carries a reclosable extruded plastic zipper inside the mouth. The zipper has complementary profiles separably interlockable in a closed condition of the zipper. A gasket flange structure is separably sealingly grippingly interengageable by and between the profiles in the closed condition of the zipper, and may also serve as a tamper evident or tamper discouraging device.
摘要:
A leak resistant toothless plastic zipper is provided. The closed end of the zipper fused together and/or is secured in position by a clamp from which a gasket extends toward the open end of the zipper to engage with the zipper slider in sealing the gap that would otherwise form at the zipper closed end. A hook is provided to secure the tab of the zipper slider in sealing engagement with the gasket when the slider is at the closed end. The gasket may be disposed about the zipper elements or interposed between the elements. A bag incorporating such a zipper is also disclosed.
摘要:
A method of and apparatus for packaging product masses in a form, fill and seal machine, wherein a continuous length of packaging film is joined in running relation by a continuous length of separately formed plastic reclosable fastener assembly having interlock profile strips spot sealed together at package length intervals. The corunning fastener strip assembly and the packaging film are oriented so that the spot seals of the strip are located in alignment with the spaces between the product masses on the film to assure that the fastener strip assembly will be cross sealed at the spot seals when the film is cross sealed between the product masses to provide individual packages. The orienting may be effected by an indexing arrangement including sensor response to index marks on the film and the fastener assembly.
摘要:
A series of bags having printable areas thereon with the bags secured at their base to a support strip and the support strip is mounted to a continuous support web such as computer paper by a strip of double surfaced adhesive tape supplied between the strip and computer paper with the computer paper thereafter folded to maintain the bags in registry for subsequent printing.
摘要:
Bags with reclosable zippers along their mouth ends and having pull flanges extending above the zippers, have attending upwardly from said pull flanges separably attached tamper evident extensions which are adhesively fixed to one another so that it is necessary to separate the tamper evident extensions from the pull flanges along lines of weakening when it is desired to gain access into the bag through the reclosable zipper. A method of and an apparatus for making the bags in linked chains and a method of and apparatus for filling the linked bags and then completing the filled bags are disclosed.
摘要:
A container dispenser assembly containing stacks of flat bags with their tops adjacent and releasably interconnected and held in a rectangular cardboard container having a central tear strip extending over three walls with the tear strip removable and the separated sections of the container foldable about a fourth wall. In one form a thread is anchored within the container to be drawn between the tops of the bags and separate them. When the container is folded open, the bags may be withdrawn one by one from the two halves of the container.
摘要:
A carrier tape is provided comprising a longitudinally extending base strip and a generally coextensive cover strip. The strips are extruded of a plastic material with at least one of the strips being formed with an integral longitudinal profile and the other of the strips having surfaces thereon which engage the profile in a continuous mechanical interlock. The surfaces of the other strip may comprise a mating profile. At least one of the strips is provided with longitudinally spaced cavities for receiving products to be carried. The tape is also provided with spaced sprocket holes for driving the tape.
摘要:
Bags in a series have first and second end portions with the bags being separated from one another except for links that connect the first end portions of the bags into a continuous chain, which is wound upon itself on a storage reel. Such winding may be in a vertical spiral fashion, or it may be by engagement by a separable continuous strip, such as a ribbon tape across the second end portions of the bags as reeled upon a core, thereby maintaining the bags in the chain substantially free from skewing relative to one another. Method and apparatus for effecting the reeling of the bag chain are also disclosed.
摘要:
Apparatus for making flexible plastic bags with integral pressure interlocking rib and groove elements on the confronting top edges, comprises an extruder for extruding a continuous tube with pairs of closely spaced interlocking elements on the surface of the tube, the total pairs being a multiple of 2 with at least 4 pairs on the tube, a slitter for slitting the tube lengthwise between profiles of alternate pairs, and a folder for folding the tube between each adjacent pair and for bringing the profile adjacent the slit over onto the closest profile of the pair which has not been slit.