Abstract: A reusable applicator tip for applying a uniform band of liquid material, such as an adhesive compound, along a selected portion of the peripheral margin of sheet material. The apparatus includes a pad block designed for receiving and transmitting liquid material onto a transfer pad for application onto the sheet material. The liquid flows through internal channels in the pad block and onto an exposed portion of the transfer pad for application onto the sheet material. The transfer pad is removed and replaced at the end of its useful life permitting continued use of the pad block. The apparatus also includes a removable edge guide which permits the selective replacement of the edge guide for varying sheets of material. Excessively worn edge guides may also be replaced without disposing of the entire pad block.

Abstract: A hand-holdable, portable welding apparatus for smoothly joining the lumens of sections of thermoplastic tubing systems, including those that may be located in a cramped work site. The integrity of the lumens is maintained when the tubes are being welded by use of a selectively rigidizable, non-elastomeric mandrel of PTFE or PFA having a predetermined maximum size dimensioned to the ID of the lumens being joined. The welding unit employs a resiliently mounted coaxial heater block in conjunction with arcuate radiator inserts that are centered about the tubes to be welded regardless of the diameter of the tubes. Spring-loaded dogs grab the periphery of the tubes as they are inserted into the welding unit and prevent them from moving apart when heat is applied.