Ink additives have an essential role in formulating and producing industrial inks. Additives help to create suitable inks with the proper characteristics for unique and diverse types of printing and media.
It doesn’t usually take a significant amount of additive to enhance an ink, but the appropriate ingredients are crucial in the industrial printing sector.
As industrial inkjet printing evolves, additive development adapts to continue to meet the needs of a variety of printing processes and industries.
The following will provide fundamental information about additive product groups:
- Wetting & Dispersing Additives – This group of additives stabilize pigments to enhance the wetting of solid particles.
- Surface Additives – Surface additives increase the ease of cleaning and the surface slip by improving or even preventing surface defects.
- Rheology Additives – This additive group is adapted appropriately according to the polarity of the system being used or whether the system is solvent-free, aqueous, or solvent-bourne. It is used to increase viscosity and/or stability for storage. Some materials used in rheology additives include clay, organoclays, organic thixotropes, acrylic thickeners, or HEUR or PEPO thickeners.
- Air-Release & Defoamers – When foam or air bubbles are a problem with an ink required for a specific printing process, air-release and defoamer additives improve processing by preventing and destroying the bubbles.
- Wax Additives – Wax additives are used to enhance surface properties to manage the ability to better process products. Three formulations of wax additives include solvent-boune dispersions, micronized waxes, and water-bourne dispersions and emulsions. The factors considered for wax additives include the melting point, polarity, and chemical basis.
- Coupling Agents & Adhesion Promoters Additives – When adhesion is an essential element of an industrial ink printing process, coupling agents and adhesion promoter additives are used. They improve the stability of bonds (adhesion) to various substrates, especially when regulations and compliance must be met.
- Viscosity Depressants Additives – Viscosity relates to the thickness, stickiness, and consistency of a fluid/liquid. Viscosity depressants are used to reduce and stabilize the viscosity of an ink. It aids in the printing process, making it smooth and easy.
- Processing Additives – Processing additives cover a broad range of improvements for different systems. They can reduce VOC odors and emissions, boost mechanical strength, improve release properties, improve flow, and stabilize emulsions and mixtures.
These are the simple fundamental ink additives used in various printing processes. Ensuring you have the appropriate additives for your processes is crucial to the quality of the products you manufacture.
Needham Ink supplies many types of Industrial inks including Coding Ink: https://www.needham-ink.com/speciality-inks/contact-coding/