Dry press pulp mould for pulp molding

Dry Press Pulp Mould for Pulp Molding: High-Precision Tooling for Enhanced Product Quality and Efficiency

Engineered for the final shaping and drying stages of molded pulp manufacturing, this dry press pulp mould is a critical component in producing high-density, dimensionally stable, and aesthetically refined paper-based packaging. Unlike wet forming tools that create initial shapes from pulp slurry, this precision tooling applies controlled heat and pressure to achieve superior surface finish, tighter tolerances, and faster production cycles—making it indispensable for industries demanding consistency, durability, and eco-friendly solutions.

Constructed from premium-grade materials such as 7075-T6 aluminum alloy or H13 tool steel, the mould offers exceptional strength-to-weight ratios and long-term performance under industrial conditions. Its ultra-smooth surface (Ra ≤ 0.4 μm), enhanced with non-stick coatings like PTFE or hard anodizing, prevents pulp adhesion while enabling efficient demolding and minimizing maintenance downtime. The modular cavity-core-ejector system allows for complex geometries—including multi-compartment trays, ergonomic handles, and interlocking features—supporting both standard and custom product designs across diverse applications.

Key advantages include thermal resilience up to 220°C, ensuring rapid moisture removal without warping; precision tolerance within ±0.1mm for repeatable quality; and energy-efficient heat transfer that cuts drying time by 20–30%. With lifespans exceeding 500,000 cycles for steel variants and 300,000+ for aluminum, these dry press moulds provide excellent ROI for high-volume manufacturers. Customization options range from multi-cavity configurations (2–32 cavities) to branding embossing, stackable edges, and tailored venting systems (Ø0.2–0.5mm micro-vents) for optimized airflow during pressing.

Designed for seamless integration into servo-driven or hydraulic dry press machines, the mould supports various heating methods—including electric, steam, and oil-based thermal systems—to match facility infrastructure. Thermal calibration via infrared sensors ensures uniform temperature distribution, while daily cleaning protocols using compressed air and periodic reapplication of protective coatings maintain peak operational efficiency over extended periods.

Industries benefitting from this advanced dry press pulp mould include food service (microwave-safe containers, bakery trays), electronics (anti-static cushioning), medical (sterile packaging), and automotive (heavy-duty protective inserts). It aligns perfectly with global sustainability goals by enabling the use of renewable raw materials like sugarcane fiber, bamboo pulp, and recycled paperboard—without compromising on structural integrity or finish quality.

Users report consistent product dimensions, reduced reject rates, and smoother ejection processes compared to older mould technologies. Many highlight the ease of customization and how the mould’s adaptability supports both small-batch innovation and large-scale production needs. Operators also appreciate the low maintenance requirements and the ability to switch between different pulp types effortlessly, enhancing overall line flexibility.

Common inquiries often center around mold lifespan under varying pressures (15–60 MPa adjustable), compatibility with specific pulp blends, and optimal ventilation design for moisture evacuation. Answers typically emphasize the importance of proper thermal calibration and regular surface upkeep to preserve coating integrity and ensure maximum cycle life. Whether used in single-unit operations or fully automated lines, this dry press pulp mould delivers reliable performance and scalable output for modern sustainable packaging demands worldwide.

Product Categories : Paper Pulp Mould > Dry Press Mould