Standard Models: (select a model to learn more) Omega III MCS 20kHz or 30kHz Ultrasonic Welder   HW 70 70kHz Ultrasonic Hand Probe   HC 35 35kHz Ultrasonic Hand Cutter   HG 35 35kHz Ultrasonic Hand Probe (Pistol)   Dynamic 745 Series 35kHz Ultrasonic Welder   Omega III MCX 20kHz or 30kHz Ultrasonic Welder   Omega III MCA 20kHz or 30kHz Ultrasonic Welder   PCS Series 20kHz, 35kHz or 70kHz Ultrasonic Power Supply   SL Series 20kHz, 35kHz or 70kHz Ultrasonic Power Supply   RL Series 20kHz, 35kHz or 70kHz Ultrasonic Power Supply   OEM Series 20kHz, 35kHz or 70kHz Ultrasonic Power Supply   Perfectweld 20kHz Ultrasonic Welder   MP 702 Series 70kHz Ultrasonic Welder   MP 351 Series 35kHz Ultrasonic Welder   MP 202 Series 20kHz Ultrasonic Welder   HW 35 35kHz Ultrasonic Hand Probe   Dynamic 3000 Series 20kHz Ultrasonic Welder   HG 70 70kHz Ultrasonic Hand Probe (Pistol)

Ultrasonic welding remains one of the fastest techniques for welding smaller thermoplastic parts. In ultrasonic welding, one part is held stationary in a holding fixture while the other part is vibrated acoustically against it under pressure, creating frictional heat at their joining surfaces. Ultrasonics remains one of the most flexible and popular joining technologies available.

Forward has been offering and tooling ultrasonic systems since 1992. Our Rinco series systems are designed with Swiss precision for repeatability under even the worst conditions and are available in 20, 35, and 70 kHz frequencies. Our Omega III models offer industry unique features and are available in 20 and 30kHz frequencies.

The Rinco Dynamic 3000 20kHz and Dynamic 745 35kHz Ultrasonic Welders are the most advanced ultrasonic welding systems available on the market today. The 32-Bit ACU Controller/Generator and Servo-Pneumatic system ensure precision control of virtually every aspect of the welding process in every welding mode(Time, Collapse, Absolute Distance, and Energy), and stores up to 50 program set-ups plus data for the previous 25 welds. Backed by a 3-year Warranty.

In addition to the Dynamic Series, we offer Rinco Perfect Weld, MP 202 Series, MP 351 Series, and the MP 702 Series.

Near Field Weld (Direct): Refers to a weld where the contact surface of the horn is 1/4" or less away from the joint surface. It is important that the horn fits exactly the contour of the part to be welded.

Far Field Weld (Indirect): The distance between the contact surface of the horn and weld between the contact surface of the horn and weld joint is more the 1/4". Ultrasonic energy is transmitted through the upper portion of the part to the joint surface.

Factors Influencing Weldability in Ultrasonics

• Amorphous vs. Semi-crystalline resins
• Mold release agents

• Moisture content
• Lubricants

• Pigments
• Plasticizers

• Resin grade
• Fillers

Ultrasonic Weldability of Plastics

Energy Director

Normally a triangular section on the joint that serves to concentrate ultrasonic energy and rapidly initiates melting of the joining surfaces. Common joints, which incorporate the use of an energy director, include: butt joints, step joints, and tongue and groove joints.

Shear Joints

This type of joint is preferred for parts that require a hermetic seal or for plastics that change rapidly from a solid to molten state over a very narrow temperature range.

INSERTING

Threaded inserts, grub screws or other parts can be ultrasonically embedded in thermoplastics.

STAKING

Melting and forming of a plastic stud to retain or lock another material, often dissimilar, in place.

SPOT WELDING

Used for joining two thermoplastic parts with no pre-formed hole or energy director. This technique is particularly suited to large parts or parts with complicated geometry and thermoformed or blow-molded parts without a joint.

SWAGING

Used to capture another component of an assembly by melting and reforming a ridge of plastic around the component. The ridge locks the second component in place without welding the materials together.