Company Filing History:
Years Active: 1990-1992
Title: Kinsaku Nishikawa: Innovator in Polyester Fiber Technology
Introduction
Kinsaku Nishikawa is a prominent inventor based in Uji, Japan. He has made significant contributions to the field of polyester fiber technology, holding a total of 3 patents. His work focuses on enhancing the properties and manufacturing processes of polyester fibers, which are widely used in various applications.
Latest Patents
Nishikawa's latest patents include innovative methods for producing high-strength polyester fibers. The first patent describes a polyester fiber that consists substantially of polyethylene terephthalate, characterized by a strength of at least 7.0 g/d, an initial Young's modulus of at least 85 g/d, and an elongation of less than 20%. The fiber also features a degree of crystallization of at least 45% and a birefringence ratio ranging from 0.38 to 0.45.
The second patent outlines a method for making polyester fiber, which involves melt spinning polyethylene terephthalate and passing it through a heated cylinder directly under the spinning die. This process includes cooling, solidifying, and drawing the yarn at speeds exceeding 2000 m/min, followed by heat treatment. The final drawing stage maintains the surface temperature of the rollers between 220°C and 250°C, ensuring optimal fiber properties.
Career Highlights
Kinsaku Nishikawa is associated with Unitika Ltd., where he has played a crucial role in advancing polyester fiber technology. His innovative approaches have led to the development of dimensionally stable polyester fibers with high strength and low shrinkage.
Collaborations
Nishikawa has collaborated with notable colleagues, including Hiroshi Yokoyama and Masami Takahashi. Their combined expertise has contributed to the success of various projects within the company.
Conclusion
Kinsaku Nishikawa's contributions to polyester fiber technology have established him as a key figure in the industry. His innovative patents and collaborative efforts continue to influence advancements in fiber manufacturing processes.