About Sigma Stretch film manufacturing.... © Sigma Stretch Film 2012 SIGMA STRETCH FILM opened its first manufacturing facility in November 1993. During the last 15 years, the company has evolved into the leading manufacturers of industrial stretch film in North America. While other stretch film producers neglected capital re-investment, SIGMA STRETCH FILM continuously invested in state-of- the-art equipment and maintained a strong focus on increased capacity. In the time since the company was founded, SIGMA STRETCH FILM has added three additional plants in the United States, as well as a fifth manufacturing facility in Ontario, Canada. These five manufacturing plants are strategically located to efficiently and economically service the North American stretch film market. Each one is guided by the same standards of production and quality control to ensure consistent product throughout the manufacturing network. And, local, in-plant customer service representation ensures accurate, fast response to customer inquiries and orders. Plus, our management team represents more than a century of combined leadership and experience in stretch film marketing and manufacturing. SIGMA STRETCH FILM is a division of the Sigma Plastics Group. The Sigma Plastics Group was founded in 1978 and is the largest, privately owned film extrusion group in the United States. It is comprised of 16 divisions, producing annual sales of 1.4 billion dollars and employs over 5,000. September 2007's Plastics News rated the Group as the 2nd largest film and sheet manufacturer in North America.