Materials suitable for ultrasonic processing include 100% synthetic fibers, such as nylon, polyester, polypropylene, certain polyethylene, modified acrylic resins, certain vinyl compounds, urethane compounds, films, coated paper, etc. It also includes synthetic fibers mixed with 35-50% non-synthetic fiber components.
Advantages of ultrasonic application in textile industry:
1. Fast, economical and high stitching strength;
2. No need to use auxiliary materials (such as: nails, glue, paper clips, etc.);
3. Ensure consistent results throughout the production process;
4. No time-consuming warm-up and recovery, and no expensive cost to maintain the temperature;
5. Cut and stitch independently, without burrs;
6. No pollution, avoid the use of toxic glue and solvent;
7. There are no needle holes in the seam, which can prevent the penetration of chemical agents, pathogens and tiny harmful particles;
Conventional ultrasonic processing technology:
(1) Ultrasonic heat sealing or "sewing":
This process can be used to form continuous seams, such as the production of protective clothing, blinds, etc, or to process immersion welding similar to buttonholes, collar stays, ties, etc. Stand-alone "sewing" equipment or standard ultrasonic welding machines can achieve this process.
(2) Rotary drum welding and lamination:
The technology has pioneered the application of ultrasonic rotating drum to the bonding and lamination process of multiple wide mesh woven or nonwoven synthetic fiber materials. The process is to pass multiple layers of fiber materials in a rotating printing cylinder and a row of welding heads to form a network pattern of sufficient width. This method does not require any chemical adhesives and other auxiliary materials to be processed into unique fabrics that other bonding methods cannot achieve. Bed covers, mattresses, disposable medical supplies, etc. can all be processed in this way.
(3) Ultrasonic cutting:
Compared with other methods, ultrasonic cutting can form smooth, long-lasting and neat edges without causing discoloration of the fabric. Ultrasonic can cut and seam at the same time, which prevents the knitted or textile material from forming a thread. At the same time, the seam has a taper to avoid pilling. Ultrasonic cutting applications include cutting carpets, strips, clothing labels, curtains, diagonal cutting and industrial woven tapes.
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