James Stern, Author at Trinetics Group

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What is hygroscopicity in plastic welding?

Apr 21, 2023 by James Stern 0 comments

Hygroscopicity is the tendency of some plastics to absorb moisture from the air. When a polymer absorbs moisture, it can affect weldability.

What is Hertz or Hz in ultrasonic welding?

Apr 21, 2023 by James Stern 0 comments

Hertz or Hz in ultrasonic welding refers to the number of cycles per second. Ultrasonic waves are measured in kHz (kilohertz) or thousands of cycles per second.

What materials are used to make horns for ultrasonic welding?

Apr 21, 2023 by James Stern 0 comments

Horns are usually manufactured from high strength aluminum alloys or titanium. Both metals have excellent acoustical property to transmit the ultrasonic energy with very little attenuation.

What is gain in ultrasonic welding?

Apr 21, 2023 by James Stern 0 comments

Each application has different amplitude requirements and thus different combinations of boosters and horns are required to achieve the appropriate gain.

What is an energy director in ultrasonic welding?

Apr 20, 2023 by James Stern 0 comments

An energy director is a design feature used in ultrasonic welding to facilitate the welding process by focusing and directing the ultrasonic energy to the desired welding location. It is a small, raised feature on one or both of the plastic parts to be welded. When ultrasonic energy is applied to the parts, the energy […]

What types of plastic polymers are ultrasonically weldable?

Aug 30, 2021 by James Stern 0 comments

Ultrasonic welding is a versatile process that can be used to weld many different types of plastic polymers. The weldability of a specific plastic polymer depends on several factors, including the polymer’s composition, molecular weight, and melting temperature. Some of the most commonly ultrasonically weldable plastic polymers include: Acrylonitrile butadiene styrene (ABS)Polypropylene (PP)Polyethylene (PE)Polycarbonate (PC)Polyamide […]

What are bad or suspect part limits in ultrasonic welding?

Aug 30, 2021 by James Stern 0 comments

When setting up your ultrasonic welding process, the best process control methodologies use limits. These limits will notify you and highlight the bad and suspect parts before it is too late. Using process control limits in ultrasonic welding will save time, money and frustration. Bad Parts Bad part weld results mean the parts do not […]

How do I achieve consistent parts that meet customer requirements 100% of the time in ultrasonic welding?

Aug 30, 2021 by James Stern 0 comments

There is the ability to produce consistent parts that meet your customers’ requirements 100% of the time by: 1) Defining the requirements 2) Setting up the measurement system 3) Documenting the set up 4) Putting controls in place 5) Periodically reviewing the system. Contact Trinetics Group at 321-622-8584 to see how we can help set […]