Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing
Patent
1990-10-15
1992-12-01
Theisen, Mary Lynn
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With cutting, punching, piercing, severing, or tearing
156514, 156519, 156257, 132323, 132327, 425289, B32B 3100
Patent
active
051677539
ABSTRACT:
A filament of thermoplastic material is formed into a continuous strand of connected beads having a longitudinal slit that penetrates about half way into each bead. This is done by passing the filament between a pair of rotating mold wheels having matching, hemispherical cavities in their outer edges with a central, circumferential flange in the edge of one wheel-the flange forming the slit. An end bead of the filament is loaded into a first clamp that feeds it to second clamp that grasps the bead while a knife severs it from the strand. The second clamp is then moved to force its held bead onto a short span of floss being held by a third clamp, so that the floss is press-fitted into the slit in the bead. The bead and floss are then released by their respective clamps, and a fourth clamp grasps the floss and moves it forward for the required distance between beads so that the next bead can be pressed thereon. Each pressed-on bead is then permanently fixed to the floss with a tiny drop of glue from a dispenser and passed through a heated drying tube. The beaded floss is then stored on a reel. The devices described are operated by a series of eight solenoids, the operations of which are timed by an electromechanical timer.
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McCullough Edward E.
McGaha Kevin W.
McCullough Edward E.
Reifsnyder David
Theisen Mary Lynn
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