Fabrics ultrasonic cutting and sealing
Fabrics: ultrasonic cutting and sealing processes.
The acrylic fibers continue to rise, even in areas which are not strictly related to the textile field such as the filtration industry, disposable items, fabrics for outdoors and medical fabrics.
Consequently, ultrasonic cutting and sewing find more and more space in many fields of application.
For this reason, Sonic Italia has developed a very wide range of solutions for any type of cutting or sewing, customizing the ultrasonic technology not just for manual applications, but also for semi-automatic or fully automated solutions always taking into consideration customers needs and respecting their production standards.
Ultrasonic sealing can be used on fabrics made just of 25% of synthetic fibers, like polyester, viscose or rayon.
Advantages of ultrasounds
Ultrasonic technology guarantees:
- no fraying
- no burns on fabrics
- no emissions of toxic fumes
- no warm up waiting time
- speed up the production time
- less energy consumption
- no thread
- coupling two fabrics or films
- simultaneously punching and sealing
- no selvage
- simultaneously cutting and sealing
Thermoplastic fabrics used
The ultrasonic cutting systems are particularly efficient with the synthetic fabrics containing thermoplastic polymers with similar melting temperature and compatible molecular structures.
These materials have many of the following characteristics:
- Wide melting range
- High friction coefficient
- Uniform thickness
- At least 25 % of thermoplastic material
- Sufficient stiffness and thickness to accept the energy on the interface ( minimum 0.0127 inches / 0.0005 inches)
Polyester is considered a very good material for many ultrasonic applications.
However, ultrasounds can generate strong and lasting seams also on both Nylon 6 and Nylon 6/6.
Most polyolefins (polypropylene and polyethylene), instead, show excellent welding characteristics and are very lightweight.