Joseph Z Sun

Title: The Innovative Contributions of Joseph Z. Sun in Packaging Technology

Introduction

Joseph Z. Sun is a prominent inventor based in Spartanburg, SC, who has made significant contributions to the field of packaging technology. With a total of four patents to his name, Sun's innovative work has enhanced the functionality and efficiency of packaging materials, making an impact in various industries.

Latest Patents

One of Joseph Z. Sun's latest patents is for a multi-layer film that incorporates a crosslinked layer of an olefin vinyl alcohol copolymer. This multi-layer film is produced by combining a substrate layer with a copolymer of an olefin and a vinyl ester. The crosslinking is preferably achieved through irradiation, followed by hydrolysis to convert the olefin/vinyl ester copolymer into a copolymer of the olefin and vinyl alcohol. The resulting structure can be utilized in a further film combination by extrusion coating additional layers, and it can also be oriented to create a heat-shrinkable film suitable for packaging materials.

Another significant patent is for a self-welding packaging film. This invention describes a process involving the blending of at least two ethylene polymers, where one of the polymers possesses a significantly greater melt flow than the others in the blend. The film can either be self-supporting or serve as an inner layer in a multi-ply film. Preferred materials for this blend include ethylene-vinyl acetate copolymers, tailored to specific melt flow characteristics to optimize performance.

Career Highlights

Joseph Z. Sun is employed at W. R. Grace & Co., where he continues to innovate and develop advanced packaging materials. His work has not only garnered multiple patents but has also contributed to the advancement of sustainable and efficient packaging solutions in the market.

Collaborations

During his career, Joseph Z. Sun has worked alongside notable colleagues such as Alan S. Weinberg and Norman D. Bornstein. These collaborations have facilitated the exchange of ideas, leading to joint innovations that have strengthened their contributions to the field.

Conclusion

Joseph Z. Sun's inventive spirit and technical expertise in packaging technology have positioned him as a valuable figure in his industry. His patents reflect his commitment to improving packaging materials, showcasing innovative solutions that respond to the evolving needs of consumers and manufacturers alike. As his career progresses, the impact of his work will undoubtedly continue to resonate in the realm of packaging innovation.