Company Filing History:
1 out of 1 
1 out of 1 
1 out of 137 
Years Active: 2000-2002
Title: Junji Yoshii: A Pioneer in Heat-Shrinkable Multi-Layer Films
Introduction
Junji Yoshii, an accomplished inventor based in Ibaraki, Japan, has made significant contributions to the field of multi-layer film technology. With a portfolio of two patents, his work focuses on innovative materials that enhance functionality and performance in packaging applications.
Latest Patents
Among his latest patents is the invention of a heat-shrinkable multi-layer film. This innovative film comprises at least three distinct resin layers: an outermost layer formed from a thermoplastic resin (A), a core layer consisting of a gas barrier resin (B), and an innermost sealing resin layer (C). The sealing resin layer is particularly noteworthy, featuring a resin material that includes a linear ethylene-1-octene copolymer obtained via a constrained geometry catalyst. This copolymer holds an 1-octene content ranging from 1 wt. % to less than 20 wt. %, with a density between 0.885 g/cm³ and 0.960 g/cm³. Additionally, the film includes an intermediate layer (D1) made from selected resins such as polyamide, thermoplastic polyester, or ethylene copolymer resins. This combination provides the film with exceptional sealing properties, mechanical strength, clarity, stretchability, and bag-making capability.
Career Highlights
Junji Yoshii has spent a notable part of his career with Kureha Chemical Industry Co., Ltd. and Kureha Plastics Co., Ltd. His work in these companies has played a vital role in developing cutting-edge packaging materials, showcasing his expertise in polymer technology and innovation.
Collaborations
Throughout his career, Yoshii has collaborated with renowned colleagues such as Hajime Tsukamoto and Yoshihiro Matsukura. These partnerships have fostered an environment conducive to research and development, enhancing the quality and applicability of their innovations in the field of multi-layer films.
Conclusion
Junji Yoshii's contributions to the development of heat-shrinkable multi-layer films highlight his innovative spirit and dedication to advancing material technology. His patents not only exemplify his technical prowess but also pave the way for future advancements in packaging solutions that prioritize performance and sustainability.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.