Why dry electrode — and why now
Conventional electrode manufacturing coats a wet slurry onto foil and then drives off the solvent in long, energy-intensive drying ovens. For cathodes, that solvent is typically NMP — hazardous, expensive to recover, and the single largest driver of coating line cost and footprint. Dry electrode processing eliminates the solvent entirely: active material, conductive additive, and a fibrillizable binder (typically PTFE) are processed as a dry powder, formed into a free-standing film, and laminated to the current collector under heat and pressure.
The payoff is significant: no drying ovens, no solvent recovery, dramatically lower energy consumption per kWh of cell capacity, a smaller plant footprint, and access to thick, high-loading electrodes that are difficult to produce with wet coating. The approach — popularized by Maxwell Technologies and now central to several major cell makers' roadmaps — is also a natural fit for solid-state and next-generation chemistries where solvent exposure is unacceptable.
What the IMC lab powder mill does
The lab powder mill is a compact dry-process development platform: it takes your powder blend through binder fibrillation and roll-mill film formation, producing free-standing electrode film for evaluation, and supports lamination of that film to foil on IMC lab calendering equipment. It exists to answer the questions every dry electrode program faces early — binder loading, fibrillation energy, mill temperature, film density, and lamination pressure — with minimal material and maximum process data.
Thirty years on the front line of dry electrode
IMC has been working with dry powder battery processing from the beginning — roughly three decades of engineering powder-to-film and film-to-foil systems alongside the researchers and manufacturers who developed the dry electrode process. IMC has supplied this market since dry electrode processing began.
Dry electrode processing is, at its core, a precision calendering problem — powder-to-film formation and film-to-foil lamination both happen in a heated, precisely controlled nip. IMC has engineered battery electrode calenders since the late 1980s, and the powder mill configuration is part of our standard calendering lineup: hardened, heated rolls with tight thermal uniformity, closed-loop gap control, and recipe-driven process management.
Lab, pilot, and production tiers
The powder mill is offered across the full scale range. The lab powder mill is a compact development platform for binder loading, fibrillation energy, and film density studies with minimal material. The pilot powder mill applies the same process at production-relevant forces and widths — the tier where dry electrode processes are proven out and free-standing film is produced at qualification quantities. And at the top of the range, IMC engineers production powder mill lines — full-width, continuous dry-process systems built on our production calendering platform (line loads to 418 metric tons). Parameters transfer directly between tiers with one engineering team and one control philosophy throughout.
Beyond electrodes
Dry battery electrode is the largest market, but powder-to-film processing applies well beyond batteries. IMC powder mills serve PTFE film and membrane production, fuel cell layers, supercapacitor electrodes, solid-state battery processing, and engineered powder-based films generally. If your material starts as a powder and needs to become a continuous film, this is the machine family.
