specialised ultrasonic technology

Sound plays a crucial role in various technologies, from medical diagnostics to industrial manufacturing. Two terms that often cause confusion—ultrasound and ultrasonic—are frequently used interchangeably, but they serve very different purposes depending on the context.

M.E.E has spent over 50 years perfecting and supplying specialised ultrasonic technology in Johannesburg and beyond. As a leader in plastic joining equipment, we understand the nuance and power of ultrasonic systems and how they differ from general ultrasound.

So, what exactly is the difference between ultrasound and ultrasonic, and how do these technologies work in real-world applications like plastic welding?

Understanding the Basics: Ultrasound vs. Ultrasonic

Both terms relate to sound frequencies above the human hearing range (typically above 20 kHz), but their application and context vary significantly.

Ultrasound

Definition: A type of sound wave that operates above the human audible range
Usage Context: Most commonly used in medical imaging (e.g., sonograms)
Focus: Non-invasive inspection or monitoring, using sound waves to visualise internal structures
Example: Pregnancy ultrasounds, echocardiograms, or industrial flaw detection

Ultrasonic

Definition: Relating to or using ultrasonic frequencies for industrial or engineering purposes
Usage Context: Applied in material processing, cleaning, measurement, and plastic welding
Focus: Leveraging high-frequency vibrations to create physical effects (e.g., heating, joining, or removing contaminants)
Examples: Ultrasonic plastic welders, ultrasonic cleaning baths, ultrasonic thickness gauges

In short:

Ultrasound refers more to the diagnostic or imaging application of high-frequency sound, while ultrasonic typically refers to its functional use in physical or industrial processes.

Specialised Ultrasonic Technology in Plastic Welding

M.E.E specialises in providing high-quality ultrasonic welding equipment—a refined and highly effective technique for joining plastic components using mechanical vibrations at ultrasonic frequencies.

How Ultrasonic Plastic Welding Works

Ultrasonic vibrations (usually 20–40 kHz) are applied to plastic parts using a sonotrode.
These vibrations generate localised heat through friction at the interface of the two parts.
The heat causes the plastic to melt and fuse together under pressure.
The result is a strong, clean, and precise weld with no need for adhesives, bolts, or solvents.

This process is widely used in industries such as:

Automotive (dashboard panels, sensors, lights)
Medical (filters, IV components, diagnostics casings)
Electronics (housing, connectors)
Consumer goods (toys, containers, packaging)

Why Choose M.E.E’s Specialised Ultrasonic Technology?

For over five decades, M.E.E has been at the forefront of plastic joining technologies, offering top-tier solutions and a robust support network in Johannesburg and throughout South Africa.

Here’s what sets us apart:

Proven Track Record: Over 50 years of industry experience has shaped our understanding of materials, applications, and innovation.
Refined Equipment: Our ultrasonic welding machines have been refined and perfected through continuous development and trusted supplier partnerships.
Tailored Solutions: We don’t believe in off-the-shelf fixes. Every piece of equipment is selected or configured based on your exact welding requirements.
Durability and Precision: Our specialised ultrasonic technology delivers unmatched reliability, precision, and quality—even for the most demanding applications.
Comprehensive Services: From equipment sourcing and installation to maintenance and training, we’re with you every step of the way.

Key Benefits of Specialised Ultrasonic Technology in Plastic Welding

No need for adhesives or fasteners
Fast cycle times and low energy usage
Strong, clean welds with no surface damage
Consistent and repeatable results
Minimal post-processing or finishing required
Environmentally friendly and cost-effective

Whether you’re producing thousands of components or working on high-value assemblies, ultrasonic welding offers the efficiency and precision required in today’s competitive manufacturing environments.

FAQs About Specialised Ultrasonic Technology

What frequency range is considered ultrasonic?

Ultrasonic frequencies start at around 20 kHz, just above human hearing. Depending on the application, typical frequencies in plastic welding range from 20 kHz to 40 kHz.

What materials can be joined with ultrasonic welding?

Ultrasonic welding is ideal for thermoplastics—including ABS, polypropylene, polycarbonate, nylon, and acrylics. It’s not suitable for metals or thermosetting plastics.

Is ultrasonic welding safe?

Yes. Ultrasonic welding is non-invasive, uses no harmful emissions or adhesives, and can be safely integrated into production lines with the correct safety protocols.

What industries benefit most from ultrasonic welding?

Industries such as automotive, medical, consumer electronics, and packaging widely use ultrasonic welding for its speed, consistency, and reliability.

What’s the difference between ultrasonic cleaning and welding?

Both use ultrasonic frequencies, but ultrasonic cleaning uses vibrations in liquid to remove contaminants, while ultrasonic welding uses vibrations to fuse materials together.

Can M.E.E provide custom ultrasonic welding solutions?

Absolutely. Our team works closely with clients to deliver tailored ultrasonic systems designed to meet specific manufacturing or product requirements.

Elevate Your Production with M.E.E’s Specialised Ultrasonic Technology

Whether you’re exploring plastic welding for the first time or upgrading your current processes, M.E.E is ready to help. With a commitment to quality, innovation, and client success, we continue to lead the way in specialised ultrasonic technology across South Africa.

What is the Difference Between Ultrasound and Ultrasonic?