company news about InterBattery Korea 2026 Preview | Capsule Filters for Lithium-Ion Battery Slurry Coating

With the rapid expansion of the new energy battery industry, manufacturers are placing greater focus on cleanliness control, particle management, and stable continuous production. In lithium-ion electrode manufacturing, slurry coating (coating process) is one of the most critical steps determining electrode consistency and production yield.

Cathode/anode slurries are typically high-solid-content, high-viscosity systems containing active materials, conductive additives, and binders. They are highly sensitive to contamination and prone to particles and gel agglomerates. If hard particles, gel lumps, fibers, or metal micro-particles enter the process between mixing/dispersing and the coating head (slot die/doctor blade), they can easily cause streaks, pinholes, scratches, coating breaks, and slot die clogging, directly impacting coating stability and electrode appearance.

Shanghai Pullner Filtration Technology Co., Ltd. (Pullner) (Website: www.pullner.com) is closely following the latest trends at InterBattery Korea 2026 and will highlight a key consumable for coating lines: Capsule Filters—designed for sealed, ready-to-use filtration to protect precision coating equipment and improve coating quality.

From mixing → storage/pressure stabilization → metering pump → piping → slot die/coating head, any contamination or agglomerate can quickly escalate into defects or unplanned downtime. Effective filtration helps manufacturers achieve:

• More stable particle control for coating quality

• Reduced coating defects and scrap rate

• Better protection for metering pumps and slot die heads

• Improved uptime and lower maintenance costs

Capsule filters can be installed inline before metering pumps, pressure tanks, and slot die coating heads to intercept oversized particles and gel agglomerates. This significantly reduces:

• Slot die clogging and flow instability

• Coating streaks, stringing, and surface defects

• Scratches caused by hard contaminants
  Result: more stable continuous coating and fewer unexpected shutdowns.

Coating slurries require strict cleanliness control. Capsule filters feature an integrated, sealed housing and closed connections, which helps:

• Reduce external exposure and dust ingress

• Lower human-contact contamination risks

• Reduce solvent evaporation and odor diffusion (for solvent-based systems)
  This supports cleaner operations and improved shop-floor safety.

Compared with traditional bag/filter housing setups, capsule filters are compact and typically offer lower residual slurry volume, making them ideal for:

• Faster slurry changeovers

• Shorter maintenance downtime

• Reduced labor and simplified handling
  This is especially beneficial for coating lines where uptime and takt time are critical.

Different formulations and operating conditions require different filtration approaches. Capsule filters can be selected with suitable filter media and micron ratings to address needs ranging from coarse particle/gel removal to fine filtration for slot die protection—while keeping flow rate and differential pressure under control. This helps achieve:

• More consistent particle control

• More uniform coating quality

• Better balance between performance and consumable cost

Slurry filtration performance depends on formulation and process conditions. Pullner can support evaluation and selection based on your:

• Slurry type (cathode/anode), solids content, viscosity, solvent system

• Target contaminants (hard particles, gels, fibers, metal fines)

• Flow rate, temperature, pressure/dP window, and connection type

• Desired outcomes (fewer die clogs, reduced streaks, higher yield, faster changeovers)

If you are attending InterBattery Korea 2026 or looking for a reliable solution for battery slurry coating filtration, welcome to contact Pullner for capsule filter application support.

Pullner | Shanghai Pullner Filtration Technology Co., Ltd.
Website: www.pullner.com,www.highflowfiltercartridge.com

Contact Person : Miss. Lucy

Job Title : Sales Manager

Business Phone : 86-21-57718597

Skype : lucyshao-pullner

Email : lucyshao@pullner.com

Contact Person : Mr.Hudarm

Job Title : Salesman

Business Phone : 86-18311506837

Email : hudarm@pullner.com