David E Heyer

Title: Innovations by David E Heyer: A Pioneer in Thermoplastic Film Technology

Introduction: David E Heyer, a notable inventor based in Circleville, OH, is recognized for his significant contributions to the development of thermoplastic polymer films. With a total of six patents to his name, Heyer has demonstrated a commitment to advancing technology in this field, particularly through innovative processes that enhance film manufacturing.

Latest Patents: Among his latest patents, two stand out for their impact on thermoplastic film production. The first, titled "Film bead heating for simultaneous stretching," describes an improved process for the biaxial stretching of thermoplastic polymer films with beaded edges. This method involves gripping the film with tenter clips and applying targeted heat to the beaded edges, ensuring optimal conditions for stretching and heat-setting. As a result, films made from materials like polyethylene terephthalate can achieve a remarkable thickness range of 0.2 to 350 microns.

The second patent, "Vacuum pinning process," outlines a method for enhancing the preparation of thermoplastic polymeric film, particularly polyethylene terephthalate. This innovation focuses on the extrusion of melt-form webs onto a quench drum with precise surface roughness and optimized spacing between die lips and quench rolls. By implementing this method, films thinner than 5 mils can be produced with improved melt drawdown ratios, ensuring better quality and stability.

Career Highlights: David E Heyer currently works for E.I. Dupont De Nemours and Company, a leader in advanced materials and innovation. His role within the organization has allowed him to further explore and develop new processes that have a lasting impact on the industry.

Collaborations: Throughout his career, Heyer has collaborated with esteemed colleagues such as Albert W Forrest, Jr. and Charles Nelson Jolliffe. This teamwork has fostered an environment of innovation, leading to the advancement of technologies that benefit the entire field of thermoplastic films.

Conclusion: David E Heyer's contributions to thermoplastic film technology through his six patents reflect his ingenuity and dedication to the field. His innovative approaches, particularly in simultaneous stretching and vacuum pinning processes, continue to pave the way for advancements in material science, positioning him as a leading inventor within the industry.