Location History:
- Dubendorf, CH (1999 - 2002)
- Greifensee, CH (2004)
Company Filing History:
Years Active: 1999-2004
Title: Innovations of Andreas Walder
Introduction
Andreas Walder is a notable inventor based in Dubendorf, Switzerland. He has made significant contributions to the field of plastics technology, holding a total of four patents. His work focuses on methods and apparatuses that enhance the production of expandable plastics granulate.
Latest Patents
One of his latest patents is a method for the production of expandable plastics granulate. This innovative process involves impregnating a plastics melt with a fluid blowing agent that is only partly soluble in the melt at elevated pressures. The method includes several steps: dispersion of the blowing agent in the melt, retaining the mixture within a predetermined pressure range for a specific retention time, cooling the impregnated melt to just above its solidification temperature, and finally granulating the cooled mixture. Another significant patent is the static laminar mixing method. This device is designed for mixing media of varying viscosities and features two mixers of different cross-sections arranged sequentially. The first mixer has a smaller cross-section than the second, and it includes an admixing device for metering an additive of lower viscosity than the main flow.
Career Highlights
Andreas Walder has worked with prominent companies in the industry, including Sulzer Chemtech AG and Sulzer Brothers Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in plastics technology.
Collaborations
Throughout his career, Walder has collaborated with notable colleagues such as Felix Alfred Streiff and Markus Fleischli. These partnerships have contributed to the advancement of his inventions and the successful implementation of his patented methods.
Conclusion
Andreas Walder's contributions to the field of plastics technology through his patents and collaborations highlight his innovative spirit and dedication to advancing manufacturing processes. His work continues to influence the industry and inspire future innovations.