Molded pulp, also named molded pulp or molded fiber, is a packaging material, typically made from recycled
paperboard and/or newsprint. It is used for protective packaging or for food service trays and beverage carriers. Other typical uses are end caps, trays, plates, bowls, and clamshell containers.
For many applications, the molded pulp is less expensive than expanded polystyrene (EPS), vacuumed formed PET and PVC, corrugation, and foams.
Molded pulp is often considered a sustainable packaging material, as defined by the Sustainable Packaging Coalition, since it is produced from recycled materials, and can be recycled again after its useful life-cycle. Molded pulp products can be made waterproof with a spray or dip coating of wax.
Types of Molded Pulp Package Production Line
Several types of molded pulp can be manufactured by several processes.
Prior to the paper pulp molding process, the mesh is mated with a vacuum chamber that draws water through the mesh into the chamber, with the mesh mold suspended above a liquid return pool. The fibrous slurry is sprayed from below onto the mold, and the vacuum draws the slurry tightly against the mesh, filling all gaps and spaces. When airflow through the mesh has been sufficiently blocked, the excess slurry falls into the return pool for recycling, and the mold advances onward to the drying process, following by separation of the mesh mold from the dried fiber plating.
Typical uses of transfer molded products are for packaging electronic equipment, cellular phones, and other household and hardware items. Very high-capacity, high-speed transfer molding equipment is used to produce drink trays, cup carriers, wine shippers, egg cartons, egg trays, pulp bedpan liners, pulp urinals, fruit trays, slipper pans, commode pans, end caps, etc.
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