Abstract: A fastener strip, with interlocking profiles of resilient material for purposes of enabling one to reclose a plastic bag after its initial opening, is secured to the bag as the bag is being formed over a cylindrical forming tube. To accomplish this, a continuous carrier strip to which the fastener strip material is mounted is passed into the interior of the forming tube to a port in the tube wall, the strip thereby passing to the outer surface of the tube where it travels part way around the tube circumference, reentering the tube interior through a second port. Between the ports, the carrier strip exposes the fastener strip mounted to it to the web from which the bag is being formed, and the fastener strip is heat fused to the web. A specially constructed combination strip which combines the carrier strip and the fastener strip material allows the two to readily separate once the fastener strip material is bonded to the web.

Abstract: Drive assemblies with two novel aspects are disclosed. According to one aspect, the drive assembly is an eccentric drive assembly which is comprised of a crankshaft with eccentric journals, a split bearing and a split housing to encircle and clamp on to the bearing. The housing is joined to a connecting rod with translates the rotation of the crankshaft into a reciprocating motion. The split character permits the bearing and housing to be opened for inspection and, if necessary, removed for repair or replacement by access through a direction transverse to the crankshaft, so that these functions can be performed without disturbing the crankshaft itself or any other units positioned on it. According to the second aspect, the housing and bearing are constructed in a manner which permits variation of the housing position along the direction of the crankshaft axis with a clamping capability at any selected position.