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Deblinding Sandwich Screens for Vibratory Separators
Sandwich Screens, also known as Self-Cleaning Screens are used to mitigate screen blinding, or clogging of the mesh, slowing down production.
Balls and sliders are sealed between a classifying mesh on the top and a coarser support screen mesh on the bottom secured together with a screen tension ring and epoxied together as a singular unit.
The unique combination of balls inside each slider yields better results than sliders or balls individually. The balls bounce off the carrier mesh and up into the classifying mesh, forcing the near-size particles to be cleared from the screen openings, and the sliders use a gentle shearing action, forcing particles away from the screen openings.
Standard Construction:
The following are for standard construction. Custom construction is always available.
- Bottom carrier mesh – standard T-304 SS 8 Mill Grade x .025”, other mesh openings are available upon request
- Screen Cleaning Devices – Sliders available in Nylon / Polypropylene / High Heat Polyester / Hytrel Polyester, 5/8” natural rubber balls.
- Top screen – Stainless Steel T-316 SS classifying mesh for separating the product.
- Sealing – FDA / CFIA Approved Epoxy grade
- Large diameter screens requiring
Common Uses:
- Effective for both wet and dry screen deblinding applications.
- Operates most effectively on particle sizes less than 100#.
Advantages:
- Greatly extends the lifetime of each individual screen.
- Lower maintenance costs – sandwich screen life and motor life are increased due to improved cleaning efficiency over other screen cleaning solutions.
- Quieter action reduces noise level when compared to other screen cleaning solutions.
- Smaller engineering fit allowing for greater clearance and shorter separation machine height, compared to other screen cleaning solutions.
- Single unit design allows for rapid screen changes.
- Re-screening options allow for significant cost saving opportunities, typically all components, including the bottom carrier mesh can be used multiple times.
Frequently Asked Questions
Find answers to common questions about square/plain weave wire mesh.
Square weave wire mesh, also known as plain weave wire cloth, is woven by passing each warp wire alternately over and under each shute wire, creating uniform square openings. This classic weave pattern delivers excellent stability, consistent aperture size, and versatility for filtration, screening, and architectural applications.
Gerard Daniel offers several variations of plain weave mesh, including square plain mesh, square twilled mesh, market grade mesh, bolting cloth (tensile bolting cloth), and mill grade mesh. Each differs in wire diameter, mesh count, and open-area percentage to meet specific flow, strength, and precision needs.
Our square wire mesh is available in stainless steel (304, 304L, 316, 316L, 321, 347, 430), Monel®, Inconel®, Incoloy®, nickel, Aluminum, brass, bronze, and copper. We also carry low-carbon steel (C1008) and DFARS-compliant stainless alloys for government and aerospace applications.
In plain weave, each wire crosses over and under one wire at a time, providing stability and fine filtration control. In twilled weave, each wire passes over two and under two adjacent wires, producing a smoother surface and greater strength — ideal for applications under high mechanical stress.
Market grade square mesh is the most commonly used industrial wire cloth, offering a balanced combination of wire diameter and mesh count for general-purpose screening, sieving, and filtering in chemical, mining, food processing, and construction industries.
Tensile bolting cloth is a fine plain-weave mesh made from smaller wire diameters to achieve higher open area and precise particle control. It’s widely used in sifting, powder coating, and liquid filtration processes that require accurate separation.
Mill grade mesh bridges the gap between market grade and bolting cloth. It provides slightly higher open area for efficient separation, making it a preferred choice for dewatering, particle classification, and general screening operations.
We stock over 5,000 mesh types ranging from coarse openings (2 mesh) to fine meshes over 500 mesh. Most rolls are 48 inches wide and a hundred feet long, with custom widths, slit rolls, and laser-cut shapes available upon request.
Yes. If your specification isn’t in stock, we can weave custom mesh in any alloy, wire diameter, or mesh count to meet your filtration or architectural requirements. We also offer laser cutting, stamping, and slitting for made-to-order parts.
Every mesh roll is inspected for weave accuracy, wire diameter consistency, and open-area uniformity. As both a manufacturer and user of our own wire cloth in filtration and separation systems, we maintain strict quality control and repeatable performance standards across all mesh grades.
