Avoiding Delamination in Flexible Packaging
Intelligent blending and dispensing of adhesives is critical to proper film lamination.
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Ed Sullivan
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Another significant maintenance and productivity benefit came from the incorporation of PTFE (Teflon) coating on components and seal-less pumping cylinders of the blending and dispensing equipment.
Many systems use cylinder rod-type pumps that are exposed to the adhesive. Because the rods eventually get adhesive on them, that adhesive begins to adhere and is cured by the air. On models containing seals, the rods ultimately become sticky enough that they literally tear the seals out of the cylinders, creating uncontrolled flow and a messy situation.
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