Manufacturers who produce ultra high volume consumer goods such as trash bags and sign banners often use the blown film or calendering production processes to create “good enough” film at rates of thousands of pounds per hour.
For higher quality film, Wiman uses the flat die extrusion process. Flat die extrusion enables tight tolerances, outstanding lot-to-lot consistency in surface quality and appearance, and pinhole-free film even down to the thinnest gauges. In fact, many customers find that, working with us, they can reduce costs by reducing the film thickness specification for their application, since Wiman can produce the thinner version with no pinholes. Flat die extrusion also provides the flexibility to impart different finishes on each side of the film.