Shinji Matsuzawa

Title: Shinji Matsuzawa: Slide Fastener Innovations

Introduction

Shinji Matsuzawa is an inventor based in Toyama, Japan, whose work focuses on slide fasteners and fastener materials. He is associated with YKK Corporation and is credited with 3 patents.

Latest Patents

Matsuzawa’s listed recent patents include “Method for Manufacturing Slide Fastener” and “Fastener Chain and Slide Fastener.”

“Method for Manufacturing Slide Fastener” describes a slide fastener with paired tapes, rows of synthetic-resin fastener elements, and a slider that engages or separates the rows. The element monofilament has a dye-colorable surface layer with a roughened surface containing numerous concaves.

“Fastener Chain and Slide Fastener” describes a woven fastener tape that combines flame-retardant, phosphorus-copolymerized polyester fibers in at least some warps with stronger, non-phosphorus-copolymerized synthetic fibers in the wefts. The design aims to provide stable flame retardancy, improve horizontal pull strength through warp contraction, reduce shifting of the weave pattern, and limit material costs by using a relatively small amount of flame-retardant fiber.

Career Highlights

Matsuzawa’s listed inventions address practical aspects of fastener design, including dyeability, flame resistance, strength, and manufacturing cost. His work is associated with YKK Corporation, a company known for fastener products.

Collaborations

His listed coworkers include Tadahiro Inomata and Natsuki Kamada.

Conclusion

Shinji Matsuzawa’s patent work reflects a focus on improving slide fasteners through material and manufacturing innovations, with attention to performance, durability, and cost.