Company Filing History:
Years Active: 1993-2000
Title: Ernst Callhoff: Innovator in Multifilament Yarn Technology
Introduction
Ernst Callhoff is a notable inventor based in Remscheid, Germany. He has made significant contributions to the field of textile engineering, particularly in the development of methods and apparatuses for spinning multifilament yarns. With a total of 2 patents to his name, Callhoff's work has had a lasting impact on the industry.
Latest Patents
One of Callhoff's latest patents is a method and apparatus for spinning a multifilament yarn made from thermoplastic material. This innovative process involves extruding the thermoplastic material through a spinneret to create a downwardly advancing filament bundle. The filaments then pass through a cooling device with two distinct cooling zones. In the first zone, an air stream is directed transversely to the advancing filaments, while in the second zone, a cooling stream composed of a mixture of air and liquid flows in the opposite direction of the filaments. This advanced technique allows for the gathering of filaments into a multifilament yarn, which is subsequently wound into a package.
Another significant patent by Callhoff is related to a long godet design. This invention features a shell mounted for rotation in a cantilevered arrangement, with a shaft extending coaxially within the shell to support an induction heater coil. The design allows for load-induced deflections of the shell to induce similar deflections in the shaft, maintaining the radial spacing between the shell and the heating coil.
Career Highlights
Ernst Callhoff is currently associated with Barmag AG, a company known for its innovative solutions in the textile machinery sector. His work at Barmag AG has positioned him as a key player in the development of advanced textile technologies.
Collaborations
Throughout his career, Callhoff has collaborated with notable colleagues, including Klaus Schafer and Georg Stausberg. These partnerships have contributed to the advancement of textile engineering and the successful implementation of innovative technologies.
Conclusion
Ernst Callhoff's contributions to the field of multifilament yarn technology exemplify his innovative spirit and dedication to advancing textile engineering. His patents reflect a commitment to improving manufacturing processes and enhancing product quality in the textile industry.