Company Filing History:
2 out of 111 
1 out of 231 
1 out of 106 Years Active: 1992-1998
Title: Rolf H Joest: Innovator in Thermoplastic Polymer Filament Technology
Introduction
Rolf H Joest is a notable inventor based in Duisburg, Germany. He has made significant contributions to the field of thermoplastic polymer technology, holding a total of 3 patents. His innovative approaches have led to advancements in the production of nonwoven webs and mats.
Latest Patents
Rolf H Joest's latest patents include a process for producing a web of thermoplastic polymer filaments. This process involves spinning filaments from a spinneret, which then pass through a cooling chamber and a stretching channel. The parameters such as the volume rate of flow of the thermoplastic polymer, air flow, air velocity, and temperature are meticulously controlled to achieve filaments with diameters less than 100 micrometers and a degree of crystallinity below 45%. The collected filaments are then heated and stretched to enhance their properties. Another patent details a method of making a fleece or mat of thermoplastic polymer filaments using a melt-blowing head. This method results in a nonwoven web that offers improved strength for a given area weight compared to previous systems.
Career Highlights
Throughout his career, Rolf H Joest has worked with prominent companies such as Reifenhauser GmbH & Co. Maschinenfabrik and Bergwerksverband GmbH. His experience in these organizations has contributed to his expertise in polymer technology and innovation.
Collaborations
Rolf H Joest has collaborated with notable individuals in his field, including Hans Georg Geus and Hermann Balk. These partnerships have likely fostered a creative environment that has led to further advancements in his work.
Conclusion
Rolf H Joest is a distinguished inventor whose work in thermoplastic polymer filament technology has made a lasting impact. His patents reflect a commitment to innovation and improvement in material science.