Proell will showcase developments for in-mold decoration and film insert molding at K 2025, Hall 5-C01. The portfolio spans non-conductive black inks designed for printed electronics and display integration, solvent-based systems optimized for thin polycarbonate films, and UV as well as dual-cure protective lacquers for first-surface hard coating. The company also extends its range with an NIR-accelerated hardener concept for two-component screen inks to shorten drying times on demanding substrates. New color shades target functional zones in touch interfaces, including radar, IR and lidar transmitting areas, while meeting automotive specifications for thermal resistance and hydrolysis. The offerings address formability, washout resistance during injection molding and interlayer adhesion within typical film/ink/resin stacks used in IMD/FIM.
Non-conductive blacks for IMD/FIM and printed electronics
Noriphan HTR N is a formable, backmoldable, solvent-based one-component screen ink for film insert molding. The deep black opaque shade Noriphan HTR N 990/011 NC is carbon black-free and electrically non-conductive, providing electrical resistance in the giga ohm range with high optical density. It is radar transmissible. The shade can be used decoratively and is primarily intended as plane multi-layer pre-printing beneath conductive pastes, avoiding interference that carbon black pigments can cause in functional structures. It is formulated to meet elevated automotive requirements for thermal resistance and hydrolysis, and has been optimized for interlayer adhesion with good compound values in the final film, ink and injection material composition.
For functional touch panel applications, Proell offers the IR-transparent non-conductive black Noriphan HTR N 959. It appears black in incident light and becomes transparent under transmitted light, making it suitable for radar, IR and lidar transmitting areas in display and touch panel assemblies.
Non-conductive black color shades for IMD/FIM
Noriphan N2K for thin films and conductive paste protection
Noriphan N2K is a solvent-based two-component screen ink optimized for IMD/FIM on thin polycarbonate films, below 175 micrometers, without inducing curling. The system is widely used in printed electronics. The deep black, opaque shade Noriphan N2K 953 is suitable for touch panel decoration and shows high electrical resistance in capacitive applications. It meets increased automotive requirements for thermal resistance and hydrolysis. Noriphan N2K can also overprint, embed and protect sensitive conductive pastes, with the ink layers preventing wash-out effects during injection molding. Films printed with Noriphan N2K exhibit good formability in high pressure forming or thermoforming, excellent temperature and washout resistance during injection molding, and durable bonding to resins such as PC, PC/ABS and silicon rubber.
Norilux FastCure 1 dual-cure protective lacquer
Norilux FastCure 1 is a formable, abrasion and chemical resistant dual-cure lacquer developed within the Norilux DC family. Its more reactive formulation enables curing with a significantly reduced UV dose. It can serve as a protective lacquer or hard coat for first-surface protection of parts produced with IMD/FIM using PC and PMMA films, and for other applications requiring durable surfaces. Typical uses include automotive interior center stacks, touch panels and decorative trims, as well as mobile phone covers, sanitary panels and household appliance displays.
The glossy grade Norilux FastCure 1/001 can be printed on textured films to produce abrasion-resistant, transparent display windows. The matt grade Norilux FastCure 1/002 can be printed on uncured transparent hard coat PC films to generate matt and gloss effects on a single printed film. In addition to high gloss, various satin, textured and matt versions are available, and rough haptic surface structures can be achieved in single-pass screen printing. The lacquer can also overprint UV-curing and solvent-based screen inks following pretests. Norilux FastCure 1 dries by solvent evaporation in jet dryers, after which decorated films can be 3D formed in a box oven by high pressure forming or thermoforming and then UV cured. The cured layer offers high resistance to abrasion, chemicals and cleaning agents, and passes various cream tests used in the automotive industry.
Decorative tactile effect on PC film printed with Norilux FastCure 1 and second surface decoration with Noriphan HTR N
Noricure ORL-1 UV-curing overprint lacquer
Noricure ORL-1 is a weather-resistant UV-curing lacquer for overprinting solvent-based ink systems, for example Thermo-Jet and Noripur, and for printing on PVC self-adhesive films, polycarbonate, rigid PVC and PMMA. It protects the overprinted ink layer from UV radiation and is suitable for outdoor use. The lacquer is available as high gloss Noricure ORL-1/001 and matt Noricure ORL-1/002, and features excellent printing properties along with good scratch, abrasion and chemical resistance.
Outdoor-resistant PVC sticker printed with NoriScreen ALU inks and protected with Noricure ORL-1/001
Noricure HC-1 hard-coat lacquer
Noricure HC-1 is a UV-curing screen printing lacquer with high scratch and abrasion resistance, with the cured surface resisting strong wipes with steel wool. The high gloss version is designed for printing on PC films, coated PET films such as Autotype Autoflex EPG 180 and Autotex V200, and various rigid PVC films, as well as for overprinting printed products. Typical uses include overprinting and protecting displays, lenses and panels. The cured lacquer shows excellent resistance to chemicals and cleaning agents. Available variants include matt Noricure HC-1-001, textured Noricure HC-1-002 and UV-stabilized Noricure HC-1-003.
Noripur for NIR-accelerated two-component drying
Noripur is a versatile screen ink system usable as a one or two-component ink on PVC, pre-treated polyester and polyolefins, acrylics, polycarbonate, wood, metals and other substrates. Processed as a two-component system, it exhibits high resistance to chemical and mechanical influences. A wide range of color shades is available from stock, including metallics and highly opaque formulations. Recognizing that two-component inks generally dry slowly, Proell offers an NIR-activatable hardener, optimally matched to near infrared drying, in place of conventional hardeners. Using this hardener significantly accelerates drying of two-component ink layers. The faster drying can benefit front panels for white goods, beverage crates, metals and additional substrates. Special highly opaque white shades developed for beverage crates can be applied in thick layers and fully cured within minutes using intense NIR drying.
Printing of Noripur highly opaque white screen ink on beverage crates
