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Plastic · Material Overview

HDPE

High-Density Polyethylene — Tough polyolefin for bottles, tanks, and durable goods needing chemical resistance.

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

Good chemical resistance
Toughness for many container uses
Common in blow and rotational molding

Limitations

Lower stiffness than many engineering plastics
Poor paint adhesion without treatment
Limited high-temperature capability in unmodified grades

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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