As modern printing processes become faster and more automated, they require safer, more functional, and more durable materials and components. Controlled conductivity helps dissipate static electricity, improving ink transfer, reducing dust attraction, enhancing print quality, and minimizing defects during high-speed printing.
Graphene nanotubes are an advanced anti-static additive for printing components due to their exceptional morphology and properties. When incorporated into rollers, sleeves, blankets, and pads, graphene nanotubes provide uniform and stable electrical conductivity while preserving strong mechanical performance, maintaining a clean product surface, and increasing the lifetime of these components.
Graphene nanotube–enhanced printing rollers, sleeves, pads, and blankets prevent static buildup from being generated during high-speed operation, supporting compliance with EN 1010 machine safety requirements, IEC 61340 electrostatic standards, and ATEX guidelines for solvent-based processes, as well as improving printing quality by reducing imperfections caused by dust and contamination.
At ultralow loadings, nanotubes provide stable, long-lasting electrical conductivity that remains unaffected by humidity or temperature, while preserving the components’ low hardness, mechanical strength, chemical resistance, and surface quality. Nanotubes enable clean manufacturing with no dust production and ensure no carbon migration during the printing process, providing a good appearance of end products.
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Graphene nanotubes in rubber, polyurethane, or fiberglass composite printing sleeves and rollers form a permanent conductive network for ESD-safe, low-defect printing. With no carbon migration, the rollers maintain their strong mechanical performance, clean surfaces, and coloring possibility. Their durable, conductive design works with all major ink types and ensures stable, non-marking performance in flexographic printing on plastic, cardboard, and paper.
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Silicone print pads enhanced with graphene nanotubes deliver durable, non-marking, electrically conductive performance in pad printing, preventing static-related defects such as contamination, poor ink transfer, and potential damage to sensitive substrates. The ultralow dosage of the anti-static additive preserves the pad printing head’s low hardness, elasticity, color flexibility, and mechanical stability, even under frequent use.
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A conductive polyurethane (PU) printing blanket enhanced with graphene nanotubes is designed for use with solvent-based inks. It shows permanent, stable electrical resistivity, reduced weight, and increased durability, ensuring there is no negative impact on surface quality or mechanical performance. This results in a safer, more reliable, and smoother printing process.
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Tuball™ products are not only able to overcome the previous difficulties with nanotube dispersion in PU systems, but they are also effective replacements for the ammonium salts and carbon black antistatic agents conventionally used in PU applications.
SWCNT-enhanced polymer, in which every monomer is decorated with a U-shaped fragment, exhibits significantly increased mechanical properties when compared to the matrix polymer.
It was shown that the electrical conductivity of SWCNT/epoxy composites increased by 7 orders of magnitude over that of epoxy resin when the content of SWCNTs was 0.005 wt%. The impact strength, tensile strength, and elastic modulus of the materials were increased by 47.9%, 58.9%, and 19.0%, respectively.
Applying an electric field during the curing of SWCNT/epoxy nanocomposites promotes the orientation and assembly of nanotubes into a more efficient conductive network, reducing electrical resistivity by up to one order of magnitude even at ultra-low loadings (0.01 wt%).
