Large Size Optical Film Cleaning Machine

STFK Series (STFK338 / STFK448 / STFK738 / STFK948) — large size optical film cleaning machine with magnetic levitation drive, precision adhesive rollers, and integrated intelligent static elimination for display and optical film manufacturing.

Multiple Width Options

Available in 338mm, 448mm, 738mm, and 948mm cleaning widths for various film sizes.

Magnetic Levitation Drive

Smooth, stable, no noise or vibration — optical film surfaces stay intact.

Integrated Static Elimination

Removes static charge from optical film surfaces to prevent contamination defects.

Product Description

The Large Size Optical Film Cleaning Machine STFK Series is designed for cleaning optical films, diffuser sheets, prism sheets, polarizers, and other large-format display materials. Available in four width configurations (STFK338, STFK448, STFK738, STFK948), the series covers a wide range of film sizes used in display and optical manufacturing.

The all-new magnetic levitation drive provides smooth, stable operation with no noise or vibration, ensuring delicate optical film materials are never deformed or creased. Special precision adhesive cleaning rollers deliver high efficiency cleaning that improves optical film yield rate, while the integrated intelligent static eliminator removes static charge from film surfaces.

Product Features

All-new magnetic levitation drive design — smooth, stable operation; no noise, no vibration
Thin cleaning layer — does not deform or crease optical film materials
Special precision adhesive cleaning rollers — high efficiency cleaning, improves optical film yield rate
Integrated intelligent static elimination — removes static charge from optical film surfaces

Technical Advantages

Multiple Widths

Four model variants cover 338mm to 948mm optical film widths for display manufacturing.

Film-Safe

Magnetic levitation and thin cleaning layer prevent optical film deformation or scratching.

Static-Free

Integrated intelligent static eliminator keeps optical film surfaces charge-free.

Technical Specifications

Model Series	STFK338 / STFK448 / STFK738 / STFK948
Application	Large size optical film surface cleaning
Drive System	Magnetic Levitation
Cleaning Method	Adhesive roller
Material Compatibility	Optical films, diffuser sheets, prism sheets, polarizers
Static Elimination	Integrated intelligent static eliminator
Available Widths	338mm / 448mm / 738mm / 948mm
Power Supply	220V / 50Hz

Industry Applications

Optical Film Processing Display Manufacturing Polarizer Production Diffuser Sheet Cleaning

Application Scenarios

Large-Format Display Film Manufacturing

Optical films for large displays — 32-inch, 55-inch, and larger — present a serious cleaning challenge because conventional cleaning equipment cannot cover the full film width in a single pass without seaming artifacts. The STFK series is available in widths from 338mm to 948mm, with each model providing full-width cleaning that eliminates the need for multi-pass cleaning and the seam defects it causes.

Diffuser, Prism, and Polarizer Film Preparation

Optical films including diffuser sheets, brightness enhancement films (BEF), and polarizers must be free of particles before lamination into a display module. A single particle trapped between film layers creates a visible hotspot or dark spot defect in the finished display. The STFK Series removes particles across the full film width before the lamination stage, protecting display quality from the film manufacturing side.

Optical Coating Pre-Treatment

Anti-reflection, anti-glare, and hard-coat optical films require a perfectly clean substrate surface before the coating process. Surface particles cause coating voids and adhesion failures that reduce the effectiveness of the coating and create visible defects. The STFK Series provides the particle-free surface baseline required for consistent, high-yield optical coating processes.

Choosing the Right STFK Model Width

The STFK series is available in four cleaning widths: 338mm, 448mm, 738mm, and 948mm. Select the model whose cleaning width equals or exceeds your maximum film width. Using a model narrower than your film requires multiple passes, which risks alignment errors and seam artifacts. Contact us if your film width falls between standard model sizes — custom widths are available on request. For polarizer film applications requiring precision grade cleaning, see our dedicated Polarizer Precision Cleaning Machine.

Frequently Asked Questions

What film types can the STFK Series clean?

The STFK Series handles optical films including diffuser sheets, prism sheets (BEF), polarizer films, TAC films, protective films, and other optical substrates used in LCD and display manufacturing. The adhesive roller cleaning method is safe for all standard optical film surfaces.

What cleaning widths are available?

The STFK Series is available in four standard widths: 338mm, 448mm, 738mm, and 948mm. Custom widths are available on request for non-standard film dimensions.

Does the cleaning process damage optical film coatings?

No. The adhesive roller cleaning method lifts particles from the film surface through gentle controlled contact without abrasives, solvents, or UV exposure. The magnetic levitation drive ensures smooth, vibration-free transport that does not stress coated film surfaces.

Can the machine handle very thin optical films?

Yes. The transport and cleaning pressure systems are designed for thin, flexible optical film materials. The magnetic levitation drive eliminates vibration that could cause thin films to wrinkle or deform during cleaning.

Does the STFK Series include static elimination?

Yes. Integrated intelligent static elimination is included, neutralizing electrostatic charge on film surfaces simultaneously with particle removal. This is essential for optical films, which are highly susceptible to electrostatic particle re-attraction.

What is the difference between the optical film cleaner and the polarizer cleaner?

The STFK optical film cleaner is optimized for large-format film cleaning across widths up to 948mm. The polarizer precision cleaner (ST-F7x40 series) is configured specifically for polarizer film dimensions and pre-lamination precision cleaning. If you clean both film types, they are typically handled by separate dedicated machines for each process stage.