The Working Principle Of Ultrasonic Valve Bag Packer

The ultrasonic valve bag packer also called an ultrasonic valve bag packing machine, is a device that uses ultrasonic technology for packaging and sealing. Ultrasonic is a sound wave with a frequency higher than what the human ear can hear, and its frequency range is generally above 20kHz, it is one of the 6 currently popular packaging machines.

How does an ultrasonic valve bag packer work?

1. The materials are put into the packaging bag.
2. The ultrasonic generator produces ultrasonic waves, which are transmitted to the bag through an ultrasonic transducer.
3. Ultrasonic waves produce thermal and mechanical effects on the packaging bag, causing the two layers of materials in the packaging bag to fuse to form a sealed package.

Working principle of ultrasonic valve bag packer:

• The working principle of the ultrasonic valve bag packer is to use the high-frequency vibration generated by conducted ultrasonic waves to seal and bond the plastic film through heat sealing.
• Specifically, the ultrasonic valve bag packer is equipped with an ultrasonic oscillator, generating high-frequency (usually 20kHz) ultrasonic vibration. When the oscillator touches the thermoplastic packaging material, the ultrasonic vibrations are transmitted to the material and generate a small amount of heat.
• Due to the presence of hot-melt materials, the vibration of ultrasonic waves can cause friction and intertwining of material molecules, thereby generating heat near the contact point. These tiny amounts of heat will quickly melt the material and firmly bond the two layers of plastic film together in the molten state to form a seal.

Advantages of ultrasonic valve bag packer:

• High packaging accuracy, up to 99.5%.
• The packaging is well-sealed to prevent material leakage.
• High degree of automation, with automatic bagging system and robotic arm, can form a completely automatic packaging line.

Successful Case:

2 Ultrasonic Bag Packing Machine In El Salvador

In conclusion, compared with the traditional heat sealing technology, ultrasonic valve bag packer has the advantages of no need to use hot melt adhesive, fast packaging speed, high degree of automation, often used in dry mortar production lines.