Welding & Sealing Equipment
Tube sealerA sealer can handle PVC, EVA, and polyurethane tubing up to ½ in. OD. An RF generator ensures correct operation for all ac single-phase input voltages from 90 to 264 V ac. The generator powers the pneumatic handheld, midsized sealing head. RF power and dwell time can be controlled by computer or manually via the front panel. The sealer is suitable for closed plastic systems, including large-volume pharmaceutical processing and synthetic cell and tissue processing. SEBRA, 100 N. Tucson Blvd., Tucson, AZ 85716.
A welder features a closed-loop ultrasonic power supply, built-in amplitude stepping, and a high-performance converter. The 2000-series is suitable for manual and automated production, with power outputs from 400 to 3300 W, frequencies of 1540 kHz, and a 1-millisecond sampling rate. Also offered is the FS-180 ultrasonic sealer, which seals knitted, woven, and nonwoven thermoplastic materials without adhesives, chemical binders, or staples. The model features a variable-speed drive mechanism, a pneumatically activated sealing wheel arm, and a forward-angled head. Branson Ultrasonics Corp., 41 Eagle Rd., Danbury, CT 06813-1961.
Modular ultrasonic welders sense the reactions of the welder to the plastic parts during the process cycle, producing repeatable results regardless of minor part-dimensional variations. The Omega III MCX units have an electronic pressure regulator, an optical encoder, electronic amplitude regulation, and six-parameter monitoring along with traditional time, energy, power, height, and travel modes. Other features include an LCD screen and palm buttons. Forward Technology Industries Inc., 13500 County Rd. 6, Minneapolis, MN 55441.
A compact, benchtop welding machine fuse welds balloons to catheter shafts that are composed of similar or identical materials. Features of the tubing welding machine include a PLC automated cycle, pneumatically activated heat shields, and independently controlled upper and lower welding jaws. Heat shields that fit the diameter of the shaft are provided to protect the balloon. Interface Associates, 27111 Aliso Creek Rd., Unit 180, Aliso Viejo, CA 92656.
A tip-forming machine offers precision control and power for catheter-processing applications. A dual independent catheter-feeding system has a split pneumatic collet carriage, individual control of air pressure for each side of the tubing feeder, and adjustable pneumatic gripping of the catheter tubing. Front panel LEDs indicate overcurrent, overtemperature, and low water pressure fault status. A digital display provides load current readings, which can be utilized for process parameter verification. PlasticWeld Systems, 3690 Coomer Rd., Newfane, NY 14108.