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Plastic · Material Overview

PP

Polypropylene — Lightweight, chemical-resistant thermoplastic used in packaging, containers, and molded parts.

PlasticChemical resistantFood-contact candidate

Specialty tags

Screening hints only. Certifications (medical, food-contact, flame, HazLoc) apply to specific grades and finished equipment — verify with supplier documentation.

Chemical resistant. Often selected where chemical exposure matters — resistance is chemistry-, concentration-, and grade-dependent.
Food-contact candidate. Commonly available in food-contact formulations — confirm regulatory status for the exact grade.

Advantages

Low density
Good chemical resistance
Potentially low material cost

Limitations

Difficult to bond or paint
Shrinkage/warpage require attention
Lower stiffness than some alternatives

Compatible Processes

Injection Molding

Melt resin pellets and inject into a closed mold to produce repeatable parts.

Blow Molding

Inflate a heated parison or preform against a mold to create hollow parts.

Rotational Molding

Tumble powdered polymer in a heated mold to build hollow, stress-relatively-uniform parts.

CNC Machining

Remove material from solid stock using computer-controlled cutting tools.

Extrusion

Force material through a die to create continuous profiles later cut to length.

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