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Polyethylene (PE) Plastics

Polyethylene plastic is characterized by toughness, near-zero moisture absorption, excellent
chemical resistance, excellent electrical chemical resistance, excellent electrical insulating
properties, low coefficient of friction, and ease of processing. Polyethylene plastics are classified by
density and the primary differences are in rigidity, heat resistance, chemical resistance, and ability to
sustain loads. In general, as density increases, harness, heat resistance, stiffness, and resistance to
permeability increase. Low-density polyethylene plastics are quite flexible, with high impact strength
and relatively low heat resistance.

Traditional markets for LDPE are in packaging films, extrusion coasting of paper, wire and cable
coating, injection molding, and pipe and tubing.

EVA - Ethylene vinyl acetate has low-temperature flexibility and is used in tough films and as a
component of multiplayer constructions for low-temperature heat sealing.

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PEEK - Polyetheretherketone

PEEK is tough and rigid, with a continuous-use temperature rating of 475 degree F. The polymer is
self-extinguishing and exhibits very low smoke emission on burning. Its crystallinity gives it
resistance to most solvents and hydrolytic stability. PEEK is also resistant to radiation.

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Polyetherimide (PEI) Plastics

An amorphous, transparent amber polymer, polyetherimide combines high temperature resistance,
rigidity, impact strength, and creep resistance. Glass-fiber-reinforced PEI plastic grades are available
for general-purpose molding and extrusion; carbon-fiber-reinforced and other specialty grades also
are produced for high-strength applications; and PET itself can be made into a high-performance
thermoplastic fiber.

Applications: PEI has found use in medical applications because of its heat and radiation resistance,
hydrolytic stability, and transparency; in the electronics field, it is used to make burn-in sockets,
bobbins, and printed circuit substrates; automotive uses include lamp sockets and under-hood
temperature sensors; and PEI plastic sheeting is used in aircraft interiors.

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PET - Polyethylene terephthalate / PETG

PET - Polyethylene terephthalate is a water-white polymer and is made into fibers, films and sheets, and
blow-molding and thermoformed containers for soft drinks and foods. Glass reinforced PET compounds
can be injection-molded into parts for automotive, electrical/electronic, and other industrial and
consumer products.

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Polycarbonate (PC) Plastics

Polycarbonates plastics are among the strongest, toughest, and most rigid thermoplastics. In
addition, they have a ductility normally associated with the softer, lower-modulus thermoplastics.
They are transparent materials and resistant to a variety of chemicals. The creep resistance of
these plastic materials is among the best for thermoplastics.

Applications: Typical applications include the following: safety shields, lenses, glazing, electrical
relay covers, helmets, pump impellers, headlights, interior aircraft components, telephone
switchgear, snowmobile components, boat propellers, and housing for hand-held power tools.

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