• Contact
  • FR
sonimat-logosonimat-logo
  • Company
    • Company
    • Our History & Profile
    • Values & Commitments
    • Career
    • Europe Technologies
  • Composites
    • Composites
    • Technologies
      • Technologies
      • Ultrasonic composite cutting
      • Ultrasonic composite welding
    • Products
      • Products
      • SONIBLADE – Embeddable end-effector for ultrasonic cutting
      • SSP – Ultrasonic composite cutter & welding system
      • Customized machines
    • Technical center
  • Fabrics
    • Fabrics
    • Technologies
      • Technologies
      • Ultrasonic cutting & welding for Fabrics
    • Products
      • Products
      • SONIROLL – Welding module for fabrics
      • Customized machines
      • Ultrasonic components
    • Technical Center
  • Food-industry
    • Food-industry
    • Technologies
      • Technologies
      • Ultrasonic slicing
    • Products
      • Products
      • SONISLICE – Ultrasonic slicer
      • Ultrasonic components
    • Technical center
  • Packaging
    • Packaging
    • Technologies
      • Technologies
      • Ultrasonic sealing
    • Products
      • Products
      • SONIPACK – Ultrasonic sealing module
      • VPACKSONIC – Ultrasonic bagging machine
      • Ultrasonic components
    • Technical center
  • Plastics
    • Plastics
    • Engineering & Preliminary studies
    • Technologies
      • Technologies
      • Infrared plastic welding
      • Hot plate plastic welding
      • Laser plastic welding
      • Spin plastic welding
      • Ultrasonic plastic welding
    • Products
      • Products
      • Ultrasonic welding machine ESW
      • Hot plate welding and infrared welding machines HPW
      • Laser welding machine LSW
      • Spin welding machine RSW
      • Ultrasonic components
    • Technical center
      • Technical center
      • Testing & preseries center
      • Training
  • Our Markets
    • Our Markets
    • Aeronautics
    • Food-industry
    • Automotive
    • Consumer goods
    • Cosmetics
    • Electronics
    • Filtration
    • Medical & hygiene
    • Naval & yatching
    • Sports
  • News
  • Downloads
  • Contact
  • FR
SONIMAT SONIMAT
  • Company
    • Our History & Profile
    • Values & Commitments
    • Career
    • Europe Technologies
  • Composites
    • Technologies
      • Ultrasonic composite cutting
      • Ultrasonic composite welding
    • Products
      • SONIBLADE – Embeddable end-effector for ultrasonic cutting
      • SSP – Ultrasonic composite cutter & welding system
      • Customized machines
    • Technical center
  • Fabrics
    • Technologies
      • Ultrasonic cutting & welding for Fabrics
    • Products
      • SONIROLL – Welding module for fabrics
      • Customized machines
      • Ultrasonic components
    • Technical Center
  • Food-industry
    • Technologies
      • Ultrasonic slicing
    • Products
      • SONISLICE – Ultrasonic slicer
      • Ultrasonic components
    • Technical center
  • Packaging
    • Technologies
      • Ultrasonic sealing
    • Products
      • SONIPACK – Ultrasonic sealing module
      • VPACKSONIC – Ultrasonic bagging machine
      • Ultrasonic components
    • Technical center
  • Plastics
    • Engineering & Preliminary studies
    • Technologies
      • Infrared plastic welding
      • Hot plate plastic welding
      • Laser plastic welding
      • Spin plastic welding
      • Ultrasonic plastic welding
    • Products
      • Ultrasonic welding machine ESW
      • Hot plate welding and infrared welding machines HPW
      • Laser welding machine LSW
      • Spin welding machine RSW
      • Ultrasonic components
    • Technical center
      • Testing & preseries center
      • Training
  • Our Markets
    • Aeronautics
    • Food-industry
    • Automotive
    • Consumer goods
    • Cosmetics
    • Electronics
    • Filtration
    • Medical & hygiene
    • Naval & yatching
    • Sports
  • News
  • Downloads
  • Contact

Ultrasonic plastic welding

  • Home
  • >
  • Plastics
  • >
  • Technologies
  • Ultrasonic plastic welding

Plastic ultrasonic welding – Principle

Ultrasonic welding has applications in many fields including the thermoplastics industry. So how does it work?

Ultrasound is a mechanical vibration similar to that produced by musical instruments. These vibrations are called ultrasound because they are at a frequency above than the hearing capacity of the human ear (greater than 16 kHz).

In an acoustic assembly, these pressure waves are produced by a generator. This sends an alternating current of the same frequency as the converter (or transducer).

Then the converter, which is made of piezoelectric ceramics, transforms this energy into mechanical vibrations.

The mechanical vibrations then generate heat friction exciting the plastic molecules, which begin to move. The plastic softens and melts allowing the components to bond. The welding action is done by the sonotrode.

Plastic ultrasonic welding technology is very suitable for plastic hot riveting or heat stacking.

Soudure ultrason textile - SONIMAT

Discover our ESW ultrasonic press

ultrasonic composite welding principle - SONIMAT

Acoustic assembly for ultrasonic plastic welding

The generator converts the mains network (50/60 Hz) electrical frequency into a corresponding high frequency electrical energy, in this diagram, to 20,000 Hz.

Then, the piezoelectric converter (or transducer) transforms the electrical 20,000 Hz into mechanical vibrations of the same frequency. The energy is then mechanical.

The booster, or amplitude amplifier, is used to increase or reduce the amplitudeproduced by the converter.

Finally, the last element of the acoustic chain, the sonotrode transmits ultrasound energy to the welding workpiece.

Much more than a simple hardware manufacturer, SONIMAT provides a set of ultrasonic plastic assembly solutions: spot welding, continuous welding, hot riveting, riveting, flanging, insertion and more.

From nature to industry

Ultrasound has always been a part of mother nature’s solutions. Bats use it in particular to orient themselves and to fly. By emitting brief ultrasound pulses of less than 1/1000 s duration at a frequency of 50,000 Hertz, they can locate obstacles, but also find the insects on which they feed. Dolphins and blue whales are also able to navigate using acoustic signals. They use a frequency of 170,000 Hertz audible only to their inner ear.

At the beginning of the sixties, the transformation of synthetic materials experienced a real boom. In fact, for the assembly of synthetic components, and with an understanding of the natural acoustic phenomenon, the ultrasound welder was developed and had a predominant role.

In the industrial field, SONIMAT began using very early on ultrasound for assembly, welding, cutting and slicing applications. Other professionals have also discovered the advantages of this technology:

  • Medicine : mainly for ultrasound and focused ultrasound thermotherapy.
  • Laboratory : sonication breaks down cell membranes. Ultrasound is also used to clean and disinfect equipment.
  • Remote sensing and telemetry : sonar and distance measurement.
  • Automotive : ultrasonic parking assistance system and obstacle avoidance.
  • Industry :  non-destructive testing of materials.
  • Leisure and practical life : pest control devices, atomiser.
  • Hairdressing : implants for hair extensions.

Applications of ultrasonic welding technology

Ultrasonic welding

Assembly by energy applicator. Mainly reserved for amorphous thermoplastics. Ultrasound welding is done very quickly (less than 1 second), without adding material.

Ultrasonic spot welding

Ultrasound spot welding is particularly recommended for thermoformed parts without an assembly profile, or for parts whose geometry and actual conditions exclude the possibility of standard welding operations.

Continuous ultrasonic welding

Applied to high speed processes, continuous ultrasound welding is a solution for the high flow rates in the fields of packaging and non-woven textiles.

Ultrasonic riveting assembly

The main advantage of this process is that it allows to assemble parts of different types of plastic.

Flanging

This technique encloses a part within a completely different material, by deformation of the material.

Insertion

The penetration of metal inserts by ultrasound makes it possible to avoid the stresses due to overmoulding, to increase the injection rates and to simplify the production of injection moulds.

Access all of our download resources

Download area

  • Company
    • Our History & Profile
    • Values & Commitments
    • Career
    • Europe Technologies
  • Food-industry
    • Ultrasonic slicing
    • SONISLICE – Ultrasonic slicer
    • Ultrasonic components
    • Technical center
  • Composites
    • Ultrasonic composite cutting
    • Ultrasonic composite welding
    • SONIBLADE – Embeddable end-effector for ultrasonic cutting
    • SSP – Ultrasonic composite cutter & welding system
    • Customized machines
    • Technical center
  • Packaging
    • Ultrasonic sealing
    • SONIPACK – Ultrasonic sealing module
    • VPACKSONIC – Ultrasonic bagging machine
    • Ultrasonic components
    • Technical center
  • Plastics
    • Testing & preseries center
    • Engineering & preliminary studies
    • Infrared plastic welding
    • Hot plate plastic welding
    • Laser plastic welding
    • Spin plastic welding
    • Ultrasonic plastic welding
    • Ultrasonic welding machine ESW
    • Hot plate welding and infrared welding machines HPW
    • Laser welding machine LSW
    • Spin welding machine RSW
    • Ultrasonic components
  • Fabrics
    • Ultrasonic cutting & welding for Fabrics
    • SONIROLL – Welding module for fabrics
    • Customized machines
    • Ultrasonic components
    • Technical Center
  • Our Markets
    • Aeronautics
    • Food-industry
    • Automotive
    • Consumer goods
    • Cosmetics
    • Electronics
    • Medical & hygiene
    • Naval & yatching
    • Sports
  • Others
    • Contact
    • Downloads

© 2020 Europe Technologies - All rights reserved.
 Designed by Wiboo | Legal Notice

We use cookies to guarantee you the best experience on our website. If you continue to use it, we will consider that you accept the use of cookies.J'accepteJe refuse