Introduction of the Fully Automatic Rotary Drum Egg Tray Molding Machine
The fully automatic rotary drum egg tray molding machine is the most widely adopted equipment for producing disposable pulp egg trays, egg cartons, and fruit trays. This rotary-style machine achieves uninterrupted, high-speed production by continuously rotating a multi-faceted drum (typically featuring 4, 8, or 12 faces) within a pulp tank to vacuum-form the pulp；It 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 mold 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 mold.
4. Molds Cleaning: The empty forming molds pass through a cleaning station where they are thoroughly rinsed before entering the next production cycle.
The Main Components
Pulping: Waste paper is shredded and blended to create a pulp slurry with a stable, consistent concentration.
Forming: 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: The wet preforms enter a multi-layer drying line (e.g., 6 layers) to undergo rapid drying and curing.
Auxiliary: A vacuum system handles the suction required for molding, while a water circulation system ensures zero wastewater discharge; Hot press machines and hot press molds are necessary for some trays production line coffee cup carrier, egg boxes etc
Automatic Rotary Drum Egg Tray Molding Machine Manufacturer
