Pretension screens are used extensively in the chemical, food/beverage and cosmetics industries.
Pretension screens are available in a number of shapes and sizes.
Our round pretension screens feature rolled foundation rings fabricated from high- quality 304 stainless steel. They are seal welded to create a clean contact surface that prevents material from getting trapped. A wide variety of sizes are available: 18", 24", 30", 36", 40", 48", 60" and 72".
Screens can be fabricated from FDA approved components. Please specify if this option is required.
Select from a wide range of mesh sizes from one-inch to 500 mesh. Specify optional backup mesh layering when needed.
Uniform screen tension is ensured by our skilled fabricators. Proper tension extends service life by reducing the amount of flex in the mesh. Flexure of the mesh over time leads to fatigue failure.
We offer two methods for securing screen edges:
- Epoxy - It is possible to maintain more uniform tension when the wires are firmly encapsulated in epoxy
- Welded - Welding is an ideal solution when 1) any part of a process could cause an adverse chemical reaction with the epoxy, or 2) high-temperature applications preclude the use of epoxy
A self-cleaning separation screen sandwiches sliders, or sliders and deblinding balls, between the sizing mesh and the coarser carrying mesh. The sizing mesh is mounted on one side of the frame or ring, and the coarser mesh is mounted on the underside. As the assembly vibrates, the excited sliders and balls bounce off the mesh, releasing trapped near-size and other trapped particles in the process. Self- cleaning screens enhance production by reducing maintenance downtime and improving throughput.
In many applications, it is necessary to support fine mesh (80 or less) with a coarser carrying mesh. When mounted directly underneath the fine mesh, the coarse mesh provides critical support to the material being processed.
Gerard Daniel is a manufacturer of replacement pretension screens that fit equipment manufactured by most major manufacturers.