Ongoing investment in R&D, coupled with our proven experience and expertise in process technologies for the production of film materials, has resulted in the successful development of an innovative Venturi drying system for film casting applications.
The production line begins with a slot die that applies an accurately controlled layer of liquid product onto a polished steel belt.
From here it passes through the Venturi dryer where the solvent – aqueous or organic – is evaporated quickly, efficiently and in a manner that leaves the end product almost completely free of tension both laterally and longitudinally.
This high precision system dramatically improves the casting process, enabling the production of film products to exceptionally narrow tolerances without any risk of skin formation, and eliminating costly faults and imperfections in the final material.
The inherent benefits of this indirect drying solution also result in a high degree of energy efficiency.
While the IPCO film casting system offers a number of unique market benefits, the compact Venturi dryer can also be used in conjunction with other drying technologies including traditional impingement dryers.
Excellent thermal and air flow effects.
The key benefits of the IPCO Venturi dryer are achieved through the use of a permeable metal foam above the drying film.
A flow of tempered air is applied to the upper side of this foamlike metallic material, creating a low negative pressure effect on the lower side in accordance with the standard laws of pneumatics.
As a result, a constant and even suction flow is formed, delivering a homogeneous drying effect.
This minimizes thermally-induced shrinkage and eliminates the risk of structural defects in the surface and layer structure of the film.
