ATMWC Binder-Free Low-Shedding Heat-Resistant HEPA Filter (500°C)

Product Overview

ATMWC is an ultra-high-temperature HEPA filter rated for continuous service at 500°C (peak 550°C × 1h). Glass-fiber media reinforced by stainless-steel mesh delivers exceptional mechanical strength in a fully stainless-steel frame and separator, for clean ovens, nuclear facilities and power-plant high-temperature air filtration. Key features ・Continuous operation up to 500°C, peak 550°C × 1h ・99.97% @ 0.3 μm filtration efficiency ・High-strength build (glass fiber + stainless-steel mesh) ・All-stainless-steel frame and separator ・Binder-free construction: no organic adhesive in media or seal — low particle shedding, no siloxane outgassing Target industries：Medical, Pharmaceutical, Electronics, Power generation, Nuclear power

Features & Specifications

No.	Model	Efficiency	W (mm)	H (mm)	D (mm)	Airflow (CMM)	Airflow (CMH)	Initial PD (Pa)
1	ATMWC-Z-Q-F	99.97%@0.3μm	305	305	150	2.5	150	350
2	ATMWC-Z-Q-F	99.97%@0.3μm	305	610	150	6.0	360	350
3	ATMWC-Z-Q-F	99.97%@0.3μm	457	457	150	7.0	420	350
4	ATMWC-14-Q-F	99.97%@0.3μm	610	610	150	14.0	840	350
5	ATMWC-Z-Q-F	99.97%@0.3μm	762	610	150	18.0	1080	350
6	ATMWC-Z-Q-F	99.97%@0.3μm	915	610	150	22.0	1320	350
7	ATMWC-Z-Q-F	99.97%@0.3μm	915	762	150	28.0	1680	350
8	ATMWC-Z-P-F	99.97%@0.3μm	305	305	290	3.5	210	300
9	ATMWC-Z-P-F	99.97%@0.3μm	305	610	290	9.0	540	300
10	ATMWC-Z-P-F	99.97%@0.3μm	457	610	290	14.5	870	300
11	ATMWC-20-P-F	99.97%@0.3μm	610	610	290	20.0	1200	300
12	ATMWC-Z-P-F	99.97%@0.3μm	762	610	290	25.5	1530	300

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LINE @baisheng

Email：sales@baisheng-tech.com

Phone：+886-2-25981958

Detailed Description

ATMWC is the flagship of Nippon Muki’s heat-resistant range, engineered with reinforced media to survive extreme thermal environments. The glass-fiber media is sandwiched between stainless-steel mesh to resist vibration and thermal expansion at high face velocities.

Materials & Construction

Property	Specification
Filter frame	STAINLESS STEEL
Media	GLASS FIBER (Held by wire net)
Max. temperature	500°C (Max. 550°C/1h)
Separator	STAINLESS STEEL
Gasket	GLASS PAPER
Grille (downstream)	-
Grille (upstream)	-
Sealant	GLASS FIBER
Max airflow	Can be calculated on request
Max final PD (Pa)	500

Airflow vs Pressure Drop (representative)

Representative curves for 610×610 mm units. The 290 mm (P) depth has slightly lower pressure drop thanks to larger pleat area.

Binder-Free, Low-Shedding Construction

A conventional HEPA bonds and seals its media and frame with polyurethane (PU) or silicone, and those sealants are generally rated for long-term service somewhere in the 100–200°C range. Above that, the adhesive first softens and cracks, releasing organic molecules, then embrittles and flakes under repeated thermal cycling — at which point the filter itself becomes a particle source. ATMWC uses no organic adhesive anywhere: sealing is done with glass fiber, the frame and separators are stainless steel, and the entire assembly is metal and glass only.

Component	Conventional adhesive HEPA	ATMWC (binder-free)
Sealant	Polyurethane / silicone	GLASS FIBER
Media bonding	Organic binder	None (glass fiber held by wire net)
Separator	Aluminium foil + hot-melt	STAINLESS STEEL
Outgassing at temperature	Organic molecules, siloxane	None
Shedding after thermal cycling	Rises as adhesive degrades	Stays stable

With no organic adhesive there is nothing to thermally decompose. Two practical consequences follow: - Low particle shedding — degrading, flaking adhesive is the most common source of self-generated particles in high-temperature filters. A binder-free build keeps downstream particle counts from creeping back up as the filter ages through repeated heat-up and cool-down cycles. - No siloxane contamination — silicone seals release siloxane at elevated temperature, and siloxane deposited on wafers, optical surfaces or coated substrates causes hazing and yield loss. Semiconductor, optical coating and OLED processes are particularly sensitive to this. At the 500°C service range of ATMWC, binder-free is not a bonus feature — it is the only option, because every organic sealant has fully decomposed well below that temperature. Any filter rated for continuous 500°C service is necessarily all-inorganic by construction, and low particle shedding follows from that structure rather than from any added treatment.

Applications

- Clean high-temperature ovens (semiconductor, LCD) - Nuclear facility ventilation and exhaust - Power-plant high-temperature air handling - Terminal filtration on high-temperature process equipment

Selection Notes

- **150 mm (Q)** — choose for moderate airflow or limited depth. - **290 mm (P)** — choose for higher airflow and longer service life. - Heat-aging tested for reliable long-term performance.