What is a rotary drum egg tray molding machine ?
The automatic rotary drum egg tray molding machine is a highly efficient, continuous-process pulp molding device. Its core structure consists of a rotating "drum" fitted with multiple egg tray forming molds. During operation, it rotates intermittently—much like a Ferris wheel—to sequentially execute the following steps:
1. Pulp Suction & Molding: The drum faces dip into the pulp tank; utilizing vacuum suction, pulp fibers are uniformly drawn onto the die surfaces to form a wet preform.
2. Natural Dewatering: As the drum rotates upward, the vacuum continues to extract moisture; additionally, certain machine models incorporate cold pressing to further squeeze out water.
3. Product Transfer: Upon reaching the transfer station, a blast of air is used to demold the wet preform, releasing it onto a conveyor belt or a transfer die.
4. Molds Cleaning: The empty forming molds pass through a cleaning station where they are thoroughly rinsed before entering the next production cycle.
Core System Components
Pulping system: Waste paper is shredded and blended to create a pulp slurry with a stable, consistent concentration.
Forming system: The core component is the rotary drum molding machine; the greater the number of molds faces on the drum (e.g., 4, 8, or 12), the higher the production output.
Drying system: The wet preforms enter a multi-layer drying line (e.g., 6 layers) to undergo rapid drying and curing.
Auxiliary systems: A vacuum system handles the suction required for molding, while a water circulation system ensures zero wastewater discharge.
Why Choose a Fully Automatic Rotary Drum Egg Tray Molding Machine ?
1) High Efficiency: Features continuous rotation, rapid molding cycles, and high output capable of producing up to 10,000 trays per hour.
2) Low Labor Costs: The entire production line requires only 3 to 6 operators to maintain 24-hour continuous operation.
3) Stable Product Quality: PLC automatic control ensures constant pulp concentration, molding pressure, and drying temperatures, resulting in egg trays with uniform thickness that are resistant to deformation.
4) Versatility: By simply swapping out the aluminum or plastic forming molds, the machine can be used to produce coffee cup carriers, fruit trays, or industrial shock-absorbing packaging.
Selection Tip:
If transitioning from sample development, it is recommended to start with a 4-sided rotary drum egg tray machine with a capacity of 2000–3000 pieces per hour.
Models and Output of Rotary Drum Egg Tray Molding Machines
