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Aline
Components is a custom plastic injection molding and manufacturing
company serving customers based internationally, nationally
and regionally in Pennsylvania, New Jersey, New York,
Delaware, and Maryland. To maintain our position as a
leading molded plastic part and component manufacturer,
Aline features a host of thermoplastic materials. We work
directly with both resin suppliers and our customers to
make sure we manufacture your part using the best possible
thermoplastic for your application.
Polypropylene (PP) is a versatile thermoplastic
used in a variety of applications from food packaging,
to textiles, to laboratory equipment, to automotive components,
and more. Aline Components offers various grades of polypropylene
to meet the needs of commercial and industrial markets.
A wide range of physical properties and relative ease
of processing make polypropylene a prime material capable
of competing with more expensive resins in demanding final
products or subsystems.
What is Polypropylene
Thermoplastic Material?
Polypropylene (PP) is a thermoplastic polymer that is
prepared catalytically from the monomer propylene. Grades
of polypropylene that are commonly used in the commercial
market have a level of crystallinity between low-density
polyethylene (LDPE) and high-density polyethylene (HDPE).
To protect the polymer during plastic injection molding
and manufacturing and to enhance end-use performance,
additives are applied to all produced polypropylene resins.
Polypropylene Plastic
Properties
At higher temperatures, PP is resistant to stress and
cracking, as well as chemical solvents, bases, and acids.
While the properties of PP resemble those of polyethylene,
there are a few specific differences. For instance, PP
will not melt below 160°C whereas polyethylene will
begin to anneal at around 100°C. Lower density polypropylene
has a higher softening point and a higher rigidity and
hardness. Standard polypropylene has a melting point of
320°F (160°C). Polypropylene plastic possesses
an outstanding balance of mechanical properties, melt
flow, color stability, and moisture barrier properties.
Advantages of Polypropylene Plastic Include:
• High temperature resistance
• High dielectric strength
• Excellent chemical resistance
• Good resistance to fatigue
A major advantage of polypropylene is a
higher temperature resistance, which makes it ideal for
plastic parts of components that have to be frequently
sterilized for use in clinical and food service environments.
Track, arc resistance, and dielectric strength allow PP
to be used extensively in electrical applications. Polypropylene
outperforms most other thermoplastics in chemical resistance
as its saturated olefinic chains yield resistance to most
oils and solvents, aqueous, salt, or alkaline solutions,
as well as water-based chemicals, soaps, and moderate
acids and bases. Hard, high-gloss surface and good fatigue
resistances make PP suitable in environments where there
is concern for bacteria build-up or any build-up that
can affect flow and performance.
Aline Components custom plastic injection
molding and manufacturing company produces thousands
of custom PP products for both commercial and industrial
end-use applications. Faced with too many thermoplastic
materials to choose from? Aline Components helps you
determine if polypropylene is the right choice so you
can reap the rewards of high performance products or
subsystems.
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