摘要:
A thin plastic film bag having openable pressure releasable rib and groove elements and closure strips at the top for closing a top side opening with the first strip having a marginal portion extending downwardly and attached to the bag wall and the second strip having a marginal portion extending upwardly and attached to the bag wall, and the first strip having a flange extending upwardly attached to the marginal portion of the second strip and having a tear line for releasing the flange so that it can be used to pull open the bag by separating the rib and groove elements.
摘要:
A separably connective flexible toy comprising a plurality of generally flat geometric flexible toy members each of which has a plurality of edges, each of the edges having resiliently flexible interhooking rib and groove separable fastener means therealong, the fastener means being complementary along all of the edges of the members, and being easily pressed together into interhooked relation for connecting the members to one another and being easily separable to disconnect the members from one another.The members may be made up from extruded sections formed from synthetic plastic material, or they may be directly molded.
摘要:
A separable fastener especially suitable for heavy duty sheet-like enclosures comprises complementary, resilient hooked rib and groove closure strips having angular hinged flange connections for attachment to generally coplanar enclosure sheet margins capable of acting as expansion joints permitting a range of pulling apart of said margins without disturbing the interlocking relationship of the ribs and grooves of the fastener strips. A simple U-shaped slider can be employed to effect closing only of the fastener, and a pull flange is provided for opening of the fastener when desired, but only with a degree of difficulty.
摘要:
A separably releasable fastener formed from resiliently yieldable material having a greater crown or rib mass of material on the respective crown portions of the heads aligned with the teeth of the heads or offset toward the hook sides of the heads, whereby resistance to separating distortion of the teeth or hook portions of the heads is increased in relation to the greater crown or rib mass of material, as compared to a conventional fastener of this type in which a uniform generally semi-circular crown formation from the tips of the teeth to the back of the heads is the normal profile configuration.
摘要:
A method of and apparatus for securing an enclosing, wrap-around member applied about an object having pressure-resistant surface, and wherein the member has pressure interlockable, i.e., plastic hook zipper, fastener comprising complementary portions along adjoining edges and wherein one of the portions is backed against the object, the other of the portions being moved into registering alignment with the backed portion and pressure exerted to drive the registering portion into interlocked engagement with the backed portion utilizing the object as the base toward which the pressure is applied. A grooved tunnel slider is provided as the means for effecting the fastener closing.
摘要:
A mechanism and method for making material for multiple plastic bags with reclosable fasteners thereon, including either continuously supplying a flattened plastic film tube and cutting a strip from the front wall to expose the rear wall or supplying a flattened film sheet and folding back both ends so as to leave a central exposed section and applying a rear fastener strip to the rear wall or exposed section of the film and applying front fastener strips to the edges of the front wall or folded ends of the film, positioning an anvil within the film and simultaneously applying high speed continuous heat sealing means such as ultrasonic sealing horns to the web portions of the fastener strips and film to form a seal, and thereafter joining the front fastener strips to the rear fastener strip and rolling the material on a supply roll for later cutting the bags down the center of the rear fastener strip, or else continuously supplying a flat film sheet and guiding one or more sets of fastener strips to the surface of said film sheet, positioning an anvil below said film and simultaneously applying high speed continuous heat sealing means, such as an ultrasonic sonic process, to the surface of the web portions of the fastener strips and film sheet to form a continuous seal, and joining and cutting between the fastener strips as required, and crosscutting the assembly to form a series of bags.
摘要:
A fluid-tight fastener comprising a pair of flexible closure strips each having a web portion and a marginal strip portion, at least the marginal strip portions being formed from strongly resilient material. The marginal strip portions have respective complementary longitudinal interlocking ribs and grooves, the ribs being wider than the grooves and the grooves deeper than the height of the ribs so that the ribs as received in the grooves cause the grooves to expand and bridges connecting the sides of the grooves to stretch and react under tension and to place the ribs under compression, whereby the ribs are sealingly gripped in fluid-tight relation within the grooves.
摘要:
A hinged flexible strip closure having complementary fastener strips and wall webs connected thereto, with the strips and webs meeting along a common parting plane, and interlock hook structure extending across the plane from one of the strips into a complementary interlock recess in the other strip, a closing and separating slider being engageable with the strips and having retainer flanges engaging with shoulders adjacent to the webs, there being hinge grooves in said strips along juncture of the webs with the strips but avoiding thinning of the webs and the retainer flanges having inner edges which are so spaced from the web as to avoid interference with efficient hinging of the webs at the grooves.
摘要:
The present invention relates to a method and an apparatus for a tray arrangement for a series of continuously linked trays. The trays are adapted to be stacked by a twisting mechanism and by a series of curved side guards which twist and bend the links connecting the trays in order to arrange the trays into the proper configuration. The trays are then unstacked by another series of curved side guards and twisting mechanism and then each tray is in turn moved to a filling station where filling material is dispensed therein. The filled tray is then moved to a lid closing station where the attached flipped open lid of the tray is closed atop the tray. The tray is then pulled by a side grasping pull flange to a position where an overhead piston driven mechanism seals the lid and cuts the link, separating the tray from the nested of the trays.