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PIM Pulp Injection Molding

Biodegradable injection molded paper

PIM Pulp Injection Molding

What is PIM?

PIM (Pulp Injection Molding) is molded products made by pulp, starch and water, and is fully biodegradable.

This technology is based on injection molding and can achieve complicated 3-dimensional structural parts which are difficult to create by conventional paper packaging or other pulp mold technology. It’s a suitable technology to replace plastic packaging such as tray, container, case and other components.

Applications

Medical ampule case
Medical ampule case
Medical device tray
Medical device tray
Cosmetics casing
Cosmetics casing

Material

Pulp + Starch + Water

PIM materials consist of pulp, starch, and water.

With patented material and process technology, this material is compatible with injection molding. 

Made from natural ingredients, PIM products have a natural texture, are environmentally friendly, biodegradable.

Process

The process is similar to typical injection molding. PIM material pellets are heated, and material flows into a screw. The material is then injected into molding tool which creates the 3-dimensional structural parts. During injection molding, tool is opened slightly and frequently to dry out the humidity in the PIM material. This is unique feature of PIM process.

Injection

Injection

Heat and Dry

Heat & Dry

Product

Product

Compostable

As a result of our own biodegradability tests, we have found that more than 90% of the molded product will decompose and return to the soil after six months.

This reduces the risk of environmental pollution even if the product were to be released into the natural world.

Compstable1
Compstable2

1 month

Compstable3

3 months

Compstable4

6 months

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