Company Filing History:
Years Active: 1997
Title: Hisashi Kojyou: Innovator in Thermoplastic Resin Cooling Technology
Introduction
Hisashi Kojyou is a notable inventor based in Yatsushiro, Japan. He has made significant contributions to the field of thermoplastic resin technology, particularly in the cooling processes of tubular thin films. With a total of 2 patents, his work has garnered attention for its innovative approach to manufacturing.
Latest Patents
One of Hisashi Kojyou's latest patents is a mandrel designed for cooling a tubular thin film of thermoplastic resin in a melted state. This apparatus is capable of cooling the thin film from both the inside and the outside while setting its diameter by interposing the film between the mandrel and an external circular coolant storage tank. The mandrel features a cylindrical shape and is connected to the lower side of a circular-shaped extruding die, from which the film is extruded downward through a circular slit.
The mandrel includes an air-injecting nozzle that injects compressed air to maintain the shape of the upper bubble part of the thin film formed between the die and the mandrel. Additionally, a coolant injecting nozzle is provided, which can inject coolant toward the inner surface of the thin film. This nozzle can be configured as a single stage of circular slit or multiple stages of circular slits. The design also incorporates a ring for setting the diameter of the tubular thin film, a discharge port for expelling the coolant used for cooling, and a seal ring that ensures the coolant is sealed while allowing for oblique injection. This innovative mandrel is instrumental in rapidly cooling the tubular thin film in a stable manner.
Career Highlights
Hisashi Kojyou is currently employed at Kohjin Co., Ltd., where he continues to develop and refine his inventions. His work has been pivotal in advancing the technology related to thermoplastic resin processing.
Collaborations
Hisashi has collaborated with notable colleagues, including Tomozi Mizutani and Katsuyuki Yokota, contributing to a dynamic and innovative work environment.
Conclusion
Hisashi Kojyou's contributions to the field of thermoplastic resin technology exemplify the spirit of innovation. His latest patent for a cooling mandrel showcases his commitment to improving manufacturing processes. His work continues to influence the industry and inspire future advancements.