Automatic Sugarcane Bagasse Pulp Molding Making Machine For Paper Cup Lid

Product Description:

The ZMC-Z900 Paper Pulp Lid Making Machine is designed for the industrial production of molded pulp cup lids used in hot and cold beverage packaging. The system integrates forming and dual-side hot pressing into one compact layout, ensuring stable quality, smooth surface finish, and precise lid geometry.

This machine is suitable for producing paper pulp lids made from sugarcane bagasse pulp, wood pulp, or other biodegradable pulp boards, offering a sustainable alternative to plastic cup lids.

Technical Specifications

Model: ZMC-Z900
Production Capacity: Approx. 400-500 kg/day
Heating Options:
Electric heating
Thermal oil heating
Steam heating
Platen Size: 920 × 920 mm
Recommended Factory Area: ≥ 300 m²
Forming Structure:
Center forming station
Left and right hot press stations

Production Process

The ZMC-Z900 adopts a continuous and automated pulp molding workflow:
1. Raw Material Preparation
Sugarcane bagasse pulp boards, wood pulp boards, or other pulp sheets are fed into the hydrapulper.

2. Pulping and Storage
High-consistency pulp tank
Dilution pulp tank
Pulp is adjusted to the required concentration before entering the forming machine pulp tank.

3. Vacuum Forming
The pulp slurry is vacuum-suctioned onto precision molds to form wet cup lids.

4. Dual-Side Hot Pressing
After forming, the wet lids are transferred to the left and right hot press systems, where moisture is removed and the final shape, thickness, and surface smoothness are fixed.

5. Trimming and Packing
Finished lids are sent to a separate trimming machine for edge cutting and then stacked and packed.

For higher automation, the system can be equipped with a robotic arm to transfer products between forming, hot pressing, and trimming stations, reducing labor and improving consistency.

Technical Parameters:

Key Advantages

Integrated Forming and Hot Press Design
Central forming with dual-side hot pressing improves efficiency
Balanced layout ensures stable cycle time and uniform quality

Flexible Heating Options
Electric, thermal oil, or steam heating can be selected according to local energy conditions and operating costs.
High-Precision Mold System

Paper pulp cup lids have strict requirements on flatness, sealing edge, and dimensional accuracy.
The mold design and manufacturing process is the most critical and technically demanding part of lid production.
ZMC-Z900 is engineered to support high-precision molds, ensuring reliable sealing performance on standard paper cups.

Application:

Why Pulp Molding Mold Design Is More Than Just Tooling:

In pulp molding, mold design is not simply about shaping a product—it defines its strength, cushioning performance, dimensional stability, and production efficiency.

Unlike plastic or metal forming, molded pulp products rely on a complex interaction between fiber behavior, water removal, and structural geometry. Because a product can only have one wall thickness, designers must rely on functional structures such as ribs, cavities, and honeycomb patterns to meet performance requirements.

Another major challenge is deformation control. Pulp molded products begin as wet preforms, and shrinkage is never uniform. Without proper process-oriented structural compensation, warping and twisting are unavoidable.

Key parameters such as draft angle, wall thickness, and fillet radius directly affect demolding, drying energy consumption, and defect rates. Small design decisions often determine whether a product runs smoothly in mass production—or becomes a constant quality issue.

Well-designed pulp molding molds are the result of process understanding, material science, and structural engineering working together.

Why work with SHM:

If you are planning to produce biodegradable tableware using bagasse or paper pulp, the ZMC-Z900 paper pulp thermoforming machine is a reliable and efficient solution.

Contact us to receive:

Machine configuration details

Mold recommendations

Factory layout suggestions

Project investment estimation