Precision Liquid Filtration for Inks, Paints & Coatings Manufacturing

After grinding and dispersion, paints and inks contain oversize particles, mill-media fragments, agglomerates, and gels that must be removed to achieve target particle-size distributions and prevent downstream defects. Strainrite's CRB-Pleat continuous resin-bonded depth cartridges (1–200µm nominal) excel in high-viscosity paint and resin filtration with their non-compressible phenolic-impregnated polyester media and 3.5 sq ft per 10" surface area — over 7x more than standard wound cartridges. The VISC-MAXX resin-bonded polyester hybrid elements (P1 through P4 sizes, 1–200µm) deliver 8–30 sq ft of filtration area per element with gradient-density construction, making them ideal for high-viscosity coatings, adhesives, and industrial paints. The Clari-MAXX multi-layer polypropylene microfiber hybrid elements (1.5–70µm) are a direct competitor replacement and serves coatings, inks, and paint applications with up to 48 sq ft of surface area per element.

Inkjet ink manufacturing demands the highest level of particle control — nozzle diameters as small as 20µm mean that particulate contamination must be filtered to well below 1µm to prevent clogging, misdirection, and print-quality defects. Strainrite's purpose-built Ink-Jet specialty series addresses every component of inkjet ink production: the Ink-Jet IKP absolute-rated polypropylene cartridges (0.3–90µm, BETA 100) filter carriers, resins, and colorants with zero fiber shedding. Ink-Jet Select IKS dual-density polypropylene cartridges feature proprietary micro/nano-fiber composite media with graded pore density for superior gel removal. The Ink-Jet IKG borosilicate microglass cartridges (0.5–40µm, BETA 100) deliver graded-pore-density depth filtration for carriers and pre-blending stages. All three series are manufactured in ISO Class 7 clean rooms with no binders or resins, carry USP Class VI certification, and comply with FDA 21 CFR 177.1520 — with 316 SS inserts standard.

The filling line is the last opportunity to ensure product quality before paint, ink, or coating reaches the customer. Surface defects, color inconsistency, and particulate contamination discovered after filling result in costly batch rejections and customer complaints. Strainrite's Glass-Pleat and Fiber-MAXX absolute-rated microglass depth cartridges (0.8–15µm, ASTM F795-88 validated, 99.98% efficiency) provide final polishing filtration for inks and coatings with non-calendared, thermally bonded media. For pre-blending final filtration in inkjet manufacturing, Pur-MAXX N Nylon 6,6 membrane cartridges (0.1–1.2µm) and Pur-MAXX E PES membrane cartridges deliver sub-micron absolute-rated retention. The Fiber-MAXX G nominally rated microglass cartridges (0.2–10µm, BETA 5000) are recommended for final polishing where the highest dirt-holding capacity is needed. NMO Monofilament Mesh filter bags serve traditional lithographic, gravure, flexographic, screen print, and pen ink filling applications with consistent, washable performance.