Nancy M Mack

Title: Innovations by Nancy M. Mack

Introduction

Nancy M. Mack is a prominent inventor based in Chicago, IL, known for her contributions to the field of packaging technology. She has been awarded six patents, showcasing her innovative approach to creating advanced materials for food packaging. Her work primarily focuses on developing heat-shrinkable films that enhance the preservation and safety of food products.

Latest Patents

Among her latest patents is a shrunken bag made from biaxially stretched, very low-density polyethylene (VLDPE) film. This heat-shrinkable film is particularly suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. In one embodiment, the film is a biaxially stretched monolayer film of a very low-density polyethylene copolymer. In another embodiment, it features a multilayer design comprising a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film such as a polyvinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer, and a second outer layer that blends an ethylene-vinyl acetate copolymer with a very low-density polyethylene copolymer. The multilayer film is preferably produced through coextrusion of the layers, resulting in bags that exhibit improved toughness.

Another significant patent involves a process for making biaxially stretched, heat-shrinkable VLDPE films. This method focuses on manufacturing puncture-resistant thermoplastic films from very low-density polyethylene. The film can be entirely VLDPE or multilayered with an oxygen barrier core layer formed from materials such as polyvinylidene chloride copolymer or ethylene-vinyl alcohol copolymer, along with two outer layers. One outer layer may consist of a blend of ethylene-vinyl acetate and VLDPE, while the other may be made of EVA. These films are designed for packaging food articles, ensuring high shrinkage and improved toughness.

Career Highlights

Nancy M. Mack is currently associated with Viskase Corporation, where she continues to innovate in the field of packaging technology. Her work has significantly impacted the food packaging industry, providing solutions that enhance product safety and shelf life.

Collaborations

Throughout her career, Nancy has collaborated with notable colleagues, including Stanley Lustig and Jeffrey M. Schuetz. These partnerships have