What Is Screen Cloth / Screen Media? Definition & Types for Vibratory Screening

Screen cloth (also called screen media) is the filtering surface material installed in a vibratory screener or separator that determines the separation cut point. It is the consumable component that directly contacts the product, separating particles based on size as the vibratory motion moves material across the screening surface. Screen cloth is available in woven wire, perforated plate, polyurethane, and wedge wire configurations to match specific application requirements.

The term "screen cloth" traditionally refers to woven wire cloth, which remains the most widely used screen media in round vibratory separators. However, the broader term "screen media" encompasses all filtering surface types. In round vibratory separators manufactured by Sweco, Kason, Midwestern Industries, and ScreenerKing, screen cloth is tensioned across a screen frame and secured with a clamp ring. The selection of screen cloth material, mesh size, and weave pattern directly impacts screening efficiency, throughput, and screen life.

Types of Screen Media for Vibratory Screeners

Why This Matters in Vibratory Screening

Screen cloth is the single most replaced component on any vibratory screener. Choosing the right screen media directly affects:

• Separation accuracy — The aperture size and consistency of the screen cloth define the cut point between accepted and rejected material. Worn or incorrectly specified cloth produces off-spec product.
• Throughput rate — Open area percentage varies significantly between media types. Woven wire cloth typically offers 30–45% open area, while perforated plate ranges from 20–40% depending on hole pattern.
• Operating cost — Screen cloth is a consumable. Material choice (304 SS vs. 316 SS vs. polyurethane) and wire diameter selection directly impact replacement frequency and cost per ton screened.
• Compliance — For FDA, GMP, and 3-A sanitary applications, screen cloth material and surface finish must meet specific regulatory requirements.

Related Glossary Terms

• Mesh Size — The number of openings per linear inch in woven wire screen cloth
• Woven Wire Cloth — The most common type of screen cloth for vibratory separators
• Pre-Tensioned Screen — Screen cloth factory-bonded to a frame for quick installation
• Perforated Plate — Punched metal sheet used as screen media for coarse applications
• Screen Frame — The ring or panel that holds screen cloth in tension inside the separator
• Blinding — Clogging of screen cloth openings by near-size particles

Screen Cloth FAQs

What is screen cloth on a vibratory screener?

Screen cloth is the filtering surface material mounted inside a vibratory screener that separates particles by size. Woven wire cloth is the most common type, but screen media also includes perforated plate, polyurethane panels, and wedge wire sections. The screen cloth determines the cut point between oversize and undersize fractions.

How often should screen cloth be replaced?

Replacement frequency depends on the material being screened, mesh size, and operating hours. Abrasive materials like minerals and metal powders may wear through screen cloth in weeks, while non-abrasive food powders may allow months of service. Inspect screen cloth regularly for holes, stretched openings, or blinding. Replace immediately when openings exceed tolerance or when tears are visible.

What is the difference between screen cloth and screen media?

The terms are often used interchangeably. Traditionally, screen cloth refers specifically to woven wire mesh, while screen media is the broader term encompassing all filtering surface types. In practice, most vibratory screening professionals use both terms to mean any installed screening surface.