A hot pressing machine is a device used to apply heat and pressure to molded pulp products such as paper trays. Its main function is to press the product using heated molds, making the surface smoother and the edges more uniform, thereby improving appearance and structural strength. It is commonly used in the final shaping process of pulp-molded products, such as egg trays, fruit trays, and industrial packaging trays.

hot press machine
hot press machine

Application of the Pulp Tray Hot Press Machine

The hot pressing machine is commonly used in egg tray production lines to shape and smooth the trays after the drying process. It helps flatten the surface and tidy up the edges, improving the appearance and packaging quality of the final product.

In addition to egg trays, the paper tray hot pressing machine is also widely applied in the finishing process of other molded pulp products such as fruit trays, cup holders, electronic product buffer trays, cosmetic trays, shoe supports, and industrial tool packaging trays. For molded pulp products that require improved appearance and structural stability, the hot press machine is a highly practical auxiliary device.

Working Principle and Function

The hot press machine shapes and flattens paper trays by applying pressure through heated upper and lower molds. At the set temperature and pressure, wrinkles and uneven edges on the surface of the trays are smoothed out, resulting in a more uniform shape, a better hand feel, and an improved appearance. For some products, hot pressing also enhances strength and stacking stability, making them easier to transport and sell.

Hot-pressed paper trays
Hot-pressed paper trays

Features of the Hot Pressing Machine

  • Compact structure and easy operation: Hydraulic-driven system with temperature control; both temperature and pressing time are adjustable.
  • Wide application range: Suitable for various molded pulp products; molds can be replaced as needed.
  • Improved appearance: Pressed products have smoother, more uniform surfaces, enhancing packaging quality.
  • Customizable design: Hot press molds can be tailored to specific product shapes and sizes for better fit and pressing results.

Suitable Customer Types

The hot press machine is ideal for customers with higher requirements for the appearance of molded pulp products. It is especially suitable for export-oriented molded pulp manufacturers, e-commerce packaging, gift packaging, and high-end fruit tray producers. Customers seeking to improve product quality are recommended to install the hot press station after the drying process.