P Series Pultrusion Drag

High-performance traction for long fibers

The P-Series dragger has been designed to firmly grip and convey multiple strands of material with high tensile strength requirements to a pellet mill. This equipment has been developed for continuous use in high-production environments.

Bay Plastics Machinery designed this drag system to efficiently handle a wide range of fiber-reinforced polymers. The P-Series complements Bay Plastics Machinery's line of pultrusion pellet mills. The largest model in this series accepts up to 40 inches (1016 mm) of fully aligned, non-overlapping strands. The maximum number of strands depends on the total tension requirement or the physical lateral stacking of the strands.

Thanks to its traction surface , each puller provides maximum pulling force with minimal impact on the pultruded material. The strands remain straight within the puller, without bending or curling, preventing internal fiber separation. Furthermore, the contact area where the gripping force is applied is evenly distributed, minimizing stress cracking and increasing the lifespan of the traction surface.

During start-up, the fibers are manually fed into the feeder and held between opposing traction assemblies . The upper assembly is pneumatically actuated and applies a downward force to the fibers, while the lower assembly remains stationary. Both assemblies simultaneously exert a clamping force and linear traction at the required operating speed. Once the fibers exit the feeder, it is recommended to feed them directly into a BXP “P” Series pellet mill.

The P-Series design also prioritizes ease of maintenance and uptime , incorporating selected components to reduce wear and simplify servicing. Operator and maintenance personnel safety has been considered in every aspect of the design.

Standard configurations and customization

Several standard configurations are available for the P Series, with the possibility of complete customization to the specific requirements of each application.

Optional equipment

Each P-Series dragger can be integrated with a wide range of standard options to enhance pelleting line performance:

High speed option

For line speeds between 120 and 250 feet/minute (36,5 to 75 m/min) . Includes increased power and chain system upgrade.

Spare parts

Customized spare parts packages: shoes, chains, shoe and chain assemblies, replacement bearings, and other drive system components . Purchasing these spare parts with the original order minimizes downtime.

Oscillating comb for strands

The infeed comb is powered by a motor that moves it sideways in a slow back-and-forth motion, distributing wear evenly over the traction surface and extending its useful life.

Electrical system with carbon fiber protection

Electrical cabinets are sealed to prevent contamination and short circuits caused by conductive fibers or dust.

DPLC integration with pellet mill

Digital integration with any BPM Pultrusion series twin-motor pellet mill . Digital pellet length control (DPLC) is managed from the conveyor's display, which acts as a speed master, maintaining a constant difference between the conveyor and pellet mill. This reduces start-up errors and operator fatigue.

Floor fixing straps

All drag systems include bases for ground anchoring. Braces can be added for increased stability. If mobility between extrusion lines is required, the braces allow for quick disconnection and ensure stability without the need for permanent fixings.