Sigma Technologies Int'l Inc.

Sigma Technologies has pioneered high-speed Polymer Multi Layer (PML) coatings in a vacuum environment. The core of Sigma’s technology is the deposition of multifunctional acrylate polymers in conjunction with plasma activation and other inorganic layers on moving webs. Acrylate monomers are flash evaporated outside the vacuum chamber. Monomer vapor is guided into the vacuum and deposited onto the moving substrate with a linear nozzle. The vapor forms a thin liquid film, which is cured with an electron beam curtain. Additional metal or ceramic coatings may be deposited in various combinations to produce a variety of products.

MONOMER FLASH EVAPORATOR AND DEPOSITION NOZZLE

Thin film radiation cured acrylate coatings can be used to functionalize the surface of a variety of substrates. These include: fabrics polymer films, metal-coated films, fibers, paper and metal sheets. The combination of in-line plasma treatment of the substrate for cleaning and adhesion promoting, with ultra thin polymer coatings with unique functional properties, creates opportunities for new high value added products. This versatile technology does not involve solvents or water based coatings, it is environmentally friendly, and the high process speed and low cost monomer materials make it highly very coat competitive.

SCHEMATIC OF POLYMER DEPOSITION ON A MOVING WEB - SIMILAR EQUIPMENT CAN BE SET UP TO COAT 3D OBJECTS