Ultrasonic welding equipment can be readily incorporated into nonwoven fabric sealing machines for laminating material and the production of items such as:
- Surgical masks
- Personal care products
Ultrasonic welding sewing machines can emboss, perforate, compact, and cut nonwoven materials. Using rotary tools to create the bond, they can make highly consistent joins in nonwoven fabric at up to 800m/min (2,625 ft/min). The ultrasonic welding of fabric eliminates the need for adhesives, thus preventing any gluing mess, which in turn avoids potential product damage and downtime for cleaning.
Ultimately, these ultrasonic welding fabric machines produce products with a soft feel that shouldn’t irritate skin. Eliminating thread sewing also allows greater elasticity in the material, which contributes to superior fit and comfort.
Herrmann Ultrasonics Engineering Capabilities
A continuous ultrasonic welder from Herrmann Ultrasonics is more than just a polypropylene welding machine. Integrated into web processes, it can laminate and bond nonwoven materials, turning them into finished products quickly and efficiently. Herrmann Ultrasonics has the design, development, and integration capabilities to support your product development programs.
ULTRASONIC – The Advantages of a New Connection Technology
- No lead times for heat-up phases
- Low energy costs, ultrasonic weld tools do not require heat-up
- No contamination by adhesives - cost savings in handling and maintenance
- Production of up to 800 m/min with reliable weld quality
- Welding, cut & seal, laminating, embossing, perforating, compacting, or cutting
- Manufacturing technology for premium products with consistent material properties and optimal hand feel
Advantages of Herrmann Ultrasonics Technology
The MICROBOND systems offer proven quality in the area of continuous processing of web material. The patented MICROGAP technology guarantees consistent weld quality at high production speeds and allows the realization of complex applications with user-friendly, very simple handling.
- Development and production "Made in Germany"
- Patented MICROGAP technology for reproducible weld quality
- Configurable integration solutions
- Minimization of maintenance and repair costs
- All-round application development consulting – 360° ULTRASONIC ENGINEERING
Advantages of Herrmann Ultrasonics Modular Systems
Regardless of MICROBOND CSI or MICROBOND RS systems, or any optional combination: The system architecture allows for modular expansion, which can be easily and safely integrated in complex production systems.
- Compliance with specified provisions for installation
- Planning documentation (installation guide)
- Detailed interface description
- Modular electrical cabinet solutions
- Plug-in type connection between the electrical cabinet and the MICROBOND actuators
The general principle of ultrasonic welding can also be applied to nonwovens. The thermoplastic fibers are activated by mechanical vibrations thus melting and bonding in pre-defined patterns. Under what conditions is ultrasonic joining suitable for nonwovens? More basic knowledge on laminating of nonwovens and examples for applications, as well as an overview of various weld geometries is available here. Basic knowledge
LONGITUDINAL SEAL: When welding nonwovens in combination with longitudinal seals, high-strength connections are established at the joint areas. Rotary ultrasonic systems are particularly suitable for joining applications in marginal areas.
CROSS SEAL: When welding cross seals, instantaneous peak power must be precisely controlled and introduced into the joint areas in a minimum of time. For such applications, correct selection of the anvil geometry and the ultrasonic system is of particular importance.
LAMINATING: Targeted joining of several layers of nonwovens by means of ultrasonics and an anvil drum with structure. Bonding of the material web is merely performed in “spots”, which prevents any adverse effects e.g. on filter properties or stretching behavior of elastic composites.
EMBOSSING: With an engraved anvil drum a pattern structure is permanently embossed onto a textile surface through application of pressure. During this process additional design effects may be achieved, depending on color combinations of the material layers to be embossed.
PERFORATING: Defined perforation of films and silicone layers by means of ultrasonics and an anvil drum. This ensures an increase in process speed compared to thermal processes, without any negative influence on the material.