Ultrasonic Cutting in the Textile Industry

- Aug 02, 2018-

The use of ultrasonic equipment for cutting and fusing has been widely recognized in the textile industry for weaving, finishing, garment sewing, etc. for the following reasons:

1. Almost all kinds of textile materials can be cut by ultrasonic waves. Profitable natural fibers, synthetic fibers, fabrics including aramid fibers, carbon fibers, and glass fibers, nonwoven fabrics, and knitted fabrics all can be cut by ultrasonically cutting machine.

2. Compared with the cold cutting process, when the thermoplastic material is cut by ultrasonic cutting, the edge of the slit is fused.

3. Compared to hot cutting, Ultrasonic cutting allows the edges of the fabric to be cut to be very soft, avoiding melt shrinkage and excessive edge thickening. Since the ultrasonic waves are heated from the inside of the fabric rather than from the outside, the fabric is not faded.

4. Due to the use of ultrasonic technology, the equipment is only heated to about 50 °C, so there is no smoke and odor, and the danger of injury and fire during operation is also eliminated. Therefore, this technology is harmless to the environment.

5. The reliability of ultrasonic equipment is very high. The use of various new textile materials and processes over the years has fully confirmed this. For example, in the case of combining ultrasonic fusion and cold cutting, the used tool and the ultrasonic cutting head are virtually free from wear.

The ultrasonic generator generates electromagnetic vibration of 20-40 khz during operation, and converted into mechanical shock by piezoelectric ceramics. After corresponding amplification, this mechanical shock becomes effective at the end of a cylindrical metal tool (ultrasonic cutting head). This oscillation is transmitted to the material cleaver that needs to be cut between the ultrasonic cutting head and the secondary tool, and generates heat from the inside thereof, and mechanically divides or fuses the material. In contrast to high temperature cutting, ultrasonic waves use mainly mechanical energy rather than thermal energy.

In addition to natural fibers, viscose, glass, aramid and carbon fibers, and fine wires can be ultrasonically cut.

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