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The Ultimate Guide to Perforated Conveyor Belts: Solutions for Drainage, Vacuum & Precision Handling


At Annilte, we specialize in designing and manufacturing durable, application-specific perforated conveyor belts that drive efficiency across industries from food processing to packaging and industrial manufacturing.

A perforated conveyor belt is a belt intentionally fabricated with a series of holes or apertures in a specific pattern and size. These are not “one-size-fits-all” products. The hole diameter, shape (round, square, slotted), and spacing (pitch) are critically engineered to perform a specific function within your system.

  1. Drainage & Liquid Removal:
    • Application: Food processing (washing fruits/vegetables, fish processing), bottling plant rinse sections, wastewater treatment.
    • How it works: Allows water, oils, or other liquids to pass through the belt, preventing pooling, improving hygiene, and keeping products dry for the next stage.
    • Annilte Solution: We offer belts with optimized hole patterns to ensure fast, complete drainage without compromising belt strength.
  2. Vacuum & Suction Holding:
    • Application: Holding lightweight bags, sheets, or products on inclined conveyors; precise positioning in CNC routing or cutting machines; label application.
    • How it works: A vacuum chamber under the perforated belt uses suction through the holes to firmly hold items flat and in place, even on steep inclines or at high speeds.
    • Annilte Solution: Precision-engineered hole patterns ensure consistent vacuum distribution and reliable hold.
  3. Airflow & Temperature Control:
    • Application: Cooling baked goods, chocolates, or packaged products; drying painted or coated items; aerating products.
    • How it works: Allows controlled air to pass through the product from above or below, enabling uniform and efficient cooling or drying, reducing process time.
    • Annilte Solution: Custom perforation layouts to match your airflow requirements and ensure even exposure.
  4. Sorting & Screening:
    • Application: Separating small components or scraps (like in recycling), screening grains, de-dusting.
    • How it works: Smaller particles or materials fall through the holes, effectively sorting them from larger items on the conveying line.
    • Annilte Solution: Durable belts with wear-resistant edges and precise hole sizing for accurate separation.