High-quality egg trays come from high-quality pulp. As the primary equipment in an egg tray production line, the performance of the paper pulper is crucial. Shuliy’s paper pulping machines combine durability and efficiency, designed specifically for the production needs of various scales. They ensure that waste paper is efficiently converted into uniform pulp, not only enhancing the quality of the final product but also fundamentally optimizing your production efficiency and cost control.
From Waste Papers to Pulp
The paper pulper can process a wide range of recycled paper materials, including old newspapers, used cartons, book paper, and other waste paper scraps. After large-scale collection, these raw materials are fed into the pulping system, where they are hydraulically broken down and thoroughly mixed.
This process produces a uniform pulp with a concentration of around 3%–5%, which serves as the essential raw material for manufacturing egg trays, fruit trays, shoe supports, and other molded pulp packaging products.


Why Choose Our Hydro Pulper Machine?
- Wide range of applications:
- Flexible handling of various waste paper materials
- Suitable for paper tray production, papermaking, and other paper product processing.
- High efficiency:
- Hydraulic pulping and stirring for rapid fiber dispersion.
- The pulp concentration is stable (3%–5%), ensuring uniform molding.
- High-quality finished pulp:
- Uniform pulp suspension ensures smooth flow for efficient molding.
- Stable consistency and even color guarantee uniform absorption during forming.
- Fiber integrity preserved after dispersion, producing egg trays resistant to cracking or deformation.
- Equipped with a de-inking/de-impurity system for minimal contaminants.
- Easy to operate:
- Highly automated, easy to operate, maintain, and clean
- One-year free warranty provided
- Energy saving and environmental protection
- The use of recycled waste paper as raw material reduces the demand for wood pulp and is in line with environmental protection trends.
- Low operating energy consumption reduces waste emissions.


How Does the Paper Pulp Making Machine Work?
The complete egg tray production process includes: pulp preparation, adsorption molding, drying, hot pressing, and packaging. As the first step of egg tray production line, the paper pulper machine works as the folloing steps.
- Feeding: Waste paper and water are added to the cardboard pulping machine.
- Hydraulic Breaking: The rotor runs at high speed, tearing and separating paper fibers through water pressure and shear force.
- Fiber Dispersion & Additives: Fibers are evenly dispersed. At this stage, pigments or functional agents such as waterproofing or strength enhancers can be mixed in to improve pulp quality.
- Impurity Removal: Screens and cleaners remove staples, plastics, and other unwanted materials.
- Pulp Output: A uniform pulp with 3%–5% concentration is obtained, ready for molding egg trays, fruit trays, shoe supports, and other fiber packaging.

The Complete Pulping System: More Than Just a Pulper
To achieve a truly efficient and stable production line, high-quality pulp preparation relies on a coordinated pulping system. This system consists of three essential components working in synergy: the paper pulper, the pulp agitator, and the pulp pump. Each plays a critical role in transforming waste paper into the perfect raw material for molding.
- Hydraulic Pulper: It all starts here. The pulper creates a high-quality primary pulp, setting the standard for your final product.
- Pulp Agitator: The agitator ensures your pulp remains perfectly mixed and uniform, eliminating inconsistencies before they reach the molding stage.
- Pulp Pump: This robust pump provides a steady, uninterrupted flow of pulp to your production line, preventing costly downtime.


Technical Specifications & System Configuration of the Paper Pulper
Production Line Model | Recommended Hydraulic Pulper | Recommended Pulp Agitator | Recommended Pulp Pump |
---|---|---|---|
3*1 & 4*1 | Model: 1.2m³ Power: 7.5kw | Model: Pendulum Cycloid-87 Power: 2.2kw-5.5kw | Model: 3 inch Power: 3kw |
3*4 | Model: 2.5m³ Power: 11kw | Model: Pendulum Cycloid-87 / WPX-100-60 Power: 2.2kw-5.5kw | Model: 3 inch Power: 3kw |
4*4 | Model: 2.5m³ Power: 11kw | Model: Pendulum Cycloid-87 / WPX-100-60 Power: 2.2kw-5.5kw | Model: 4 inch Power: 4kw |
4*8 | Model: 4m³ Power: 18.5kw | Model: Pendulum Cycloid-87 / WPX-100-60 Power: 3kw-5.5kw | Model: 4 inch Power: 4kw |
5*8 | Model: 5m³ Power: 22kw | Model: Pendulum Cycloid-87 / WPX-100-60 Power: 3kw-5.5kw | Model: 5 inch Power: 5.5kw |
6*8 & 8*8 | Model: 6m³ or 8m³ Power: 30kw or 45kw | Customized Agitator | Model: 6 inch or 8 inch Power: 7.5kw+ |
