Craig Allen Chmielewski

Title: Craig Allen Chmielewski: Innovator in Rubber Processing Technologies

Introduction

Craig Allen Chmielewski is an accomplished inventor based in Medina, OH (US). He holds 2 patents that showcase his expertise in rubber processing technologies. His innovative approaches have contributed significantly to the field of elastomers and thermoplastic materials.

Latest Patents

Chmielewski's latest patents include a staged condensation, dynamic vulcanization process for making a rubber blend. This invention describes a staged process in which successive dynamic vulcanizations of plural curable rubber blend components are based on condensation reactions of a functional group carried by each curable rubber. The process is carried out in three stages, during which gases evolved during the condensation reactions are removed. It is essential to form an intermediate fully dense hard blend in the second stage. This intermediate hard blend contains a relatively large amount of plastic, making it much harder than the desired final blend. In the third stage, additional rubber and curative for uncured rubber are added to achieve the desired softness. This process, carried out in an extruder, results in fully dense pellets that are injection molded to produce articles having essentially the same specific gravity as that of the pellets. Another notable patent involves processes for producing thermoplastic elastomers that comprise a triblend of engineering resin, dynamically vulcanized alloy of thermoplastic olefin polymer, and elastomeric copolymer, along with a compatibilizer. These processes produce compositions that retain structural integrity at high temperatures and exhibit excellent tensile properties, elongation, and fluid resistance.

Career Highlights

Throughout his career, Chmielewski has worked with various companies, including Advanced Elastomer Systems, L.P. His contributions to the field have been recognized through his patents and the impact of his work on rubber processing technologies.

Collaborations

Chmielewski has collaborated with notable professionals in the industry, including Krishna Venkataswamy and Kang-Bo Wang. Their combined expertise has further advanced the innovations in elastomer processing.

Conclusion

Craig Allen Chmielewski is a significant figure in the field of rubber processing technologies, with a focus on dynamic vulcanization and thermoplastic elastomers. His contributions through patents and collaborations highlight his role as an innovator in this specialized area.