KVT Bielefeld GmbH
About us
In the complex environment of plastic welding, we are a technology leader and focus on a customer-oriented approach. We strive to offer solutions that make plastic welding as easy as possible. We are constantly developing our plastic welding technologies to provide you with the best results. Check out our new servo-driven InfinityTM ultrasonic welding machine with patented Melt-Match® technology. Precise, consistent, reliable, that's Melt-Match®.
Our automation-ready ultrasonic generators - iQ AiMTM, iQ Auto-Plus and iQ Auto-Plus - with the patented MPC (multi-point controls for multiple sonotrodes) are easy to integrate and provide consistent, accurate and strong welds for various plastic joining applications.
For joining large parts, we offer the VW6000 series vibration welding machines and the LFVW6000 series low-frequency vibration welding machines. These systems are Industry 4.0 ready and provide remote connectivity for faster diagnostics, data collection and service over the most common industrial communication protocols. Our latest vibration welding technology is equipped with our self-developed and user-friendly HMI software to ensure the most efficient process control by providing real information and functions. Such as time graphics of amplitude, force and distance information with additional data for controlling, monitoring, diagnosing and evaluating the welding process.
Our particle-free welding solutions include infrared, hot gas and laser welding systems that weld particle-free and ensure a strong, strong and visually appealing weld.
Products & services
Ultraschallschweißanlage
Infinity™ with Melt-Match® Patented Melt-Match® Technology Produce fast and consistently by programming ultrasonic stack velocity, force, and position throughout the entire welding process for stronger welds. Accurate & Reliable Ultrasonic Welding Weld more accurately and reliably thanks to a tighter standard deviation of dimensional accuracy and 100% digital all-electric control. Lower Production Costs Since ultrasonic welding doesn’t require filler materials, adhesives, or fasteners, you can reduce production costs for each project. Replicate Proven Welding Processes Easily replicate a proven welding process from one Infinity system to another with the 100% digital all-electric control. No adjustments to pneumatics are needed. Weld Various Types of Materials A wide variety of thermoplastics and metals can be welded using this Ultrasonic Welder for more flexibility in your production.
Hot Gas Welding
The following described patent-protected plastic welding process KVT-HotGasWelding is the state of the art 2-phase welding procedure, which is applied for substance to substance connection of injection or blow molded plastic parts. Whenever part cleanliness is priority, complex geometries have to be welded, weight reduced parts have to be fabricated, and maximum mechanical strength has to be achieved, HGW is the right choice.
Laser plastic welding
NRG LASER PLASTIC WELDING LINE Particulate Free Welding Particulate free welding for bonding strength virtually as strong as the base material. Minimal or no flash for a clean and aesthetically pleasing appearance. No damage to internal components Non-contact process with localized heat input reduces mechanical stress level on inner components during the weld. Precise control of the welding area. Joins two natural or clear plastic parts without any additives Eliminates the use of any costly absorbent or additives. Provides a clean weld with no consumables – fasteners, glue, etc. Drastically improves the quality and strength of the welded assembly. Precise control delivers consistent weld quality Highly controlled and consistent heat input, precision clamping with no relative motion of parts during the cycle assures a highly repeatable plastic welding process and consistent joint quality.
Electromagnetic Resistance Welding The EWS method
The EWS process particularly concerns the subsequent installation of metallic components and threaded inserts in plastic parts. The heating here and thus the plastification of the joining zones are made indirectly by non-contact heating of an available metallic component using electromagnetic energy. Thus, plastic parts with three-dimensional joining zones can also be welded. The characteristics – Non-contact heating of the metal components – Exact provision of the necessary energy consumption – Exact reproducibility of the insert temperature – Low thermal load of metal + plastic – Shortest possible heating times – Shortest possible cooling times using cold insert punch – Insert tolerances smaller than 0.1 mm – No material damage due to overheating – No hot machine parts – Deep heating of the metal components using low frequency
two phase thermoforming
two phase thermoforming for deform plastic rivet domes in two phases. Phse one, geat up with hot air, phase two, deform with a cold forming stamp. Particle free welding process • Radiant heat • No pollution on the heating element • Welding of nearly all kinds thermoplastic materials • Gas temperature possible up to 800 C • Lower mechanical stress on the components as eg ultrasonic riveting • N o material adhesions on the tools also for materials with low viscosity m elt by contactless plasticization and cold " forming punch • High welding seam strength • Possibility of simultaneously welding • Expiration – Heating / B lowing – Pressing / Stamping Welding
Vibration wedling
Vibration Welding? Weld large and irregularly shaped parts efficiently with our selection of Vibration Welders. Ideal for manufacturers that produce plastic parts for automotive, appliances, home improvement, and other industries.
Spin Welding
Infrared welding
Hot Plate welding
The heating element welding process is one of the oldest and most proven joining methods in the plastics industry and has now reached an extremely high technological standard as a welding process for thermoplastics. It is considered a reliable welding process for thermoplastics.
Prototype plastic welding
We also offer laboratory welding / prototype welding for all plastic welding processes in our technical center. Please feel free to contact us.