Modular Rubber Screen Panels with Buffer Strips for Primary Screening

Strudex buffered modular rubber panels combine a strip-profile working surface with rubber bonded to a steel support plate for primary screening. The rubber receives coarse-particle contact, the buffer strips define protected contact zones, and the plate supports the panel section. The modular, hold-down configuration allows that surface to be specified by position, with hardness selected within the published 40–70 Shore A range.

Technical Parameters

A buffered face allocates material to the contact path

Buffer strips are part of the working geometry. They place additional rubber at defined contact regions while the openings provide the route for the undersize fraction. Their arrangement should be selected with the direction of travel and the point where coarse material first lands. The design objective is a protected screening surface that still gives smaller particles access to the required openings.

Choose the profile before assigning a universal heavy-duty grade

Primary-screening feed can impose a high local impact followed by repeated abrasive travel. Top size, drop height and the incoming trajectory describe the first part; mineral abrasiveness, particle shape and movement across the face describe the second. A panel should be selected for both contacts. Its buffered profile is most useful when the protected zones correspond to the material path instead of being specified as an undifferentiated addition across the whole deck.

• Impact concentration: identify the first contact zone and whether the stream lands across the available width. A narrow loading path can consume one group of strips while other regions remain lightly loaded. Relate that pattern to the chosen profile before changing every panel in the set.
• Undersize access: consider the openings between the protected regions and the material bed above them. A long-lasting contact feature is useful only while the panel continues to make the required separation. Compare remaining strip geometry with opening wear and the product streams.
• Particle release: distinguish a near-size particle lodged in an opening from adhering fines across the surface. Rubber response can be selected for the duty, while moisture and clay may also require attention to washing or distribution. These conditions should not be reduced to one generic blockage claim.

The hardness range is a design choice within the panel

The published 40–70 Shore A range provides scope to select a softer or firmer response. Hardness does not replace the rest of the specification. Strip geometry, panel section, aperture pattern and support influence how the compound behaves under load. A grade selected for flexibility should be evaluated in its actual structure; a firmer grade should be evaluated against the same process and contact objectives, rather than assumed to deliver a fixed life advantage.

Read the limiting feature of a buffered module

The modular format supports renewal of a consumed position without automatically discarding neighboring serviceable panels. That benefit depends on identifying what has limited the component. Flattened strips, cut webs, enlarged openings, accessible interface separation and retention movement describe different failures. The next replacement should restore the correct working geometry and connection, with any recurring concentrated load understood.

1. Compare strip wear with the incoming material path. Wear beneath one stream can indicate a distribution issue or a position-specific contact duty; it does not by itself establish that the compound is unsuitable everywhere.
2. Inspect aperture condition and product grading together. A protective profile may remain visible after the working openings have changed, so strip height alone is an incomplete acceptance or renewal criterion.
3. At replacement, inspect accessible bonded edges, supporting contacts and hold-downs. Visual condition can reveal damage but does not establish bond strength throughout the assembly; any required bond acceptance belongs in the agreed specification.

Define the buffered panel with its strip pattern, openings, section, supporting plate and hold-down drawing. Add the grade requirement and contact conditions at its deck position. This gives Strudex a concrete product configuration to quote and gives the plant a basis for comparing useful separation and wear behavior, under comparable feed and operating conditions.

Product FAQ

What do the buffer strips contribute to a primary-screening panel?

They provide a defined contact pattern for coarse feed on the rubber screening surface. Their layout should relate to impact locations, material travel and access to the openings. Select the buffered configuration with the panel drawing, rather than treating additional protective rubber as independent of screening performance.

Should buffer strips be used uniformly across the whole deck?

Place the buffered configuration according to the duty at each position. The feed zone may experience different contact from downstream screening areas. Use the loading pattern and wear map to define the layout, while preserving the openings required for separation and the correct retaining arrangement.

How should rubber hardness within the 40–70 Shore A range be selected?

Select the grade against impact, gouging, sliding abrasion and the flexibility required at the openings. Include strip geometry, feed top size, drop height and moisture in the review. A hardness value alone does not establish how the complete buffered panel will behave or how long it will remain useful.

What should be inspected when the buffer strips are worn?

Inspect the strips together with aperture edges, panel seating, hold-downs and accessible rubber-to-steel interfaces. Remaining strip height alone does not establish acceptable grading or attachment. Record whether renewal is driven by strip consumption, opening wear, interface damage or movement, so the next specification addresses the limiting feature.