Multilayer Die maximizes barrier film production versatility.
December 7, 2010 -
Designed to produce blown film structures from 5-9 layers, ProCone multilayer die has stackable mandrel arrangement that allows vertical movement of mandrels within die stack. Design also allows for angular movement of mandrels relative to each other, and interchangeable modules allow switching for higher/lower rates or special resins as required. Manufactured in sizes from 2-12 in., die is targeted to developmental machines and narrow width lines for web widths to 60 in.
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Original Press release
Davis-Standard, Killion Specialty Systems
1 Extrusion Dr.
Pawcatuck, CT, 06379
USA
New ProCone Dies Illustrate Versatility
(Bridgewater, N.J.)--Davis-Standard recently introduced the ProCone multilayer die to produce blown film structures from five to nine layers. These dies, engineered to provide maximum versatility for the production of barrier films, have a stackable mandrel arrangement allowing for vertical movement of mandrels within the die stack. The unique design also allows for angular movement of the mandrels relative to each other, which provides the necessary flexibility to change the layer ratios without needing to change extruder position. This movement enables the modules, consisting of one cone and one ring, to be rotated to share an extruder, or to be uncoupled and moved within the stack for use with another extruder. Additionally, interchangeable modules are of a rate range design and can be exchanged for a higher or lower rate, or switched for special resins as needs require.
"The use of the ProCone for barrier films is targeted to developmental machines and narrow width lines for web widths to 60 inches (1,500mm). The die and extrusion system offer a higher level of versatility for re-arranging layer configurations and ratios than previously achieved with other die systems," said Rick Keller, vice president of Davis-Standard's Blown Film Systems. "The ProCone actually allows for the flexibility promised but never achieved by other stackable approaches. This is another example of Davis-Standard's increasing market presence in seven and nine-layer systems."
Keller added, "Processors appreciate the solid performance as well as options for various configurations. Instead of investing millions in a nine-layer line with fixed geometry, they can use the ProCone concept for great performance now and in the future. So far, this die has been successful in developing applications in food and industrial packaging."
The ProCone is manufactured in sizes ranging from 2 to 12 inches (50 to 300mm). It features a conical design with a binary network for distributing the polymer to the spirals. There is one large hole through the center of the die for IBC (internal bubble cooling) air exchange on 6 to 12-inch (150 to 300mm) diameter dies. Minimal bolts are used between the layers to ensure ease of operation and cleaning.
For more information about ProCone dies, contact Rick Keller at kellerr@bc-egan.com.
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