Polypropylene (PP) is a thermoplastic “addition polymer” made from a combination of propylene monomers. It is used in a variety of applications to include packaging for consumer products, plastic parts for various industries including the automotive industry, special devices like living hinges, and textiles. Polypropylene was first polymerized in 1951 by a pair of Phillips petroleum scientists named Paul Hogan and Robert Banks and later by Italian and German scientists Natta and Rehn. It became prominent extremely fast, as commercial production began barely three years after Italian chemist, Professor Giulio Natta, first polymerized it. Natta perfected and synthesized the first polypropylene resin in Spain in 1954, and the ability of polypropylene to crystallize created a lot of excitement. By 1957, its popularity had exploded and widespread commercial production began across Europe. Today it is one of the most commonly produced plastics in the world.
Most significant properties of Polypropylene
- Chemical Resistance: Diluted bases and acids don’t react readily with polypropylene, which makes it a good choice for containers of such liquids, such as cleaning agents, first-aid products, and more.
- Elasticity and Toughness: Polypropylene will act with elasticity over a certain range of deflection (like all materials), but it will also experience plastic deformation early on in the deformation process, so it is generally considered a "tough" material. Toughness is an engineering term that is defined as a material's ability to deform (plastically, not elastically) without breaking...
- Fatigue Resistance: Polypropylene retains its shape after a lot of torsions, bending, and/or flexing. This property is especially valuable for making living hinges.
- Insulation: polypropylene has a very high resistance to electricity and is very useful for electronic components.
- Transmissivity: Although Polypropylene can be made transparent, it is normally produced to be naturally opaque in color. Polypropylene can be used for applications where some transfer of light is important or where it is of aesthetic value. If high transmissivity is desired then plastics like Acrylic or Polycarbonate are better choices.
- Polypropylene is readily available and relatively inexpensive.
- Polypropylene has high flexural strength due to its semi-crystalline nature.
- Polypropylene has a relatively slippery surface.
- Polypropylene is very resistant to absorbing moisture.
- Polypropylene has good chemical resistance over a wide range of bases and acids.
- Polypropylene possesses good fatigue resistance.
- Polypropylene has good impact strength.
- Polypropylene is a good electrical insulator.
- Polypropylene has a high thermal expansion coefficient which limits its high-temperature applications.
- Polypropylene is susceptible to UV degradation.
- Polypropylene has poor resistance to chlorinated solvents and aromatics.
- Polypropylene is known to be difficult to paint as it has poor bonding properties.
- Polypropylene is highly flammable.
- Polypropylene is susceptible to oxidation.
|Technical Name||Polypropylene (PP)|
|Resin Identification Code (Used For Recycling)|
|Melt Temperature||130°C (266°F)|
|Typical Injection Mold Temperature||32 - 66 °C (90 - 150 °F) ***|
|Heat Deflection Temperature (HDT)||100 °C (212 °F) at 0.46 MPa (66 PSI) **|
|Tensile Strength||32 MPa (4700 PSI) ***|
|Flexural Strength||41 MPa (6000 PSI) ***|
|Shrink Rate||1.5 - 2.0 % (.015 - .02 in/in) ***|
EP 548R is a nucleated antistatic formulated, high fluidity heterophasic copolymer used for thin-walled injection molding Items made with EP 548R exhibit high stiffness, relatively good impact resistance, and excellent antistatic properties.
- Thin-Walled article
- Article with long flow paths such as flower pots, containers, housewares,
- Filter housings and appliance components Sport, Leisure and toys.
It is used for food content
″Jampilen HP552R″ is a high melt flow homopolymer for the production of CF, BCF, and fine denier staple fibers at medium to high spinning speeds and exhibits excellent antigasfading properties. ″Jampilen HP552R″ is suitable for nonwoven fabrics for diapers, medical-sanitary applications, and wipes. Another typical application is high tenacity continuous filament for straps for backpacks, sports bags, bulk bags, and safety belts. Continuous filament with medium tenacity is used for upholstery and sportswear. ″Jampilen HP552R″ is also suited for the production of bulked continuous filament for carpets. ″Jampilen HP552R″ is suitable for food contact.
-Wipes and tissues
-Straps for backpacks, sports bags, bulk bags, and safety belts
-Upholstery and sportswear
– Bulk continuous filament for carpets
– Nonwoven staple fiber
– Injection-molded articles, housewares, etc
Z 30 S is a high melt ﬂow homopolymer for the production of low denier BCF, CF, and staple ﬁbers at medium to high spinning speeds. Z 30 S offers high homogeneity, stable extrusion and excellent processability on both short and long spinning lines. This grade allows a high stretch ratio and gives tough and resilient ﬁbers.
Z 30 S is widely used for the production of bulked continuous ﬁlament for carpet face yams. Another major application is the production of high tenacity continuous ﬁlament for straps for backpacks, handles for big bags, and safety belts. Continuous ﬁlament with medium tenacity is used for upholstery, sportswear, and heavy-duty nothing. Z 30 S is also suitable for the production of low denier staple ﬁbres for thermobonding.
Z 30 S is suitable for food contact
C 30 S is a polypropylene homopolymer with good ﬂow properties and is particularly suitable for the extrusion of ﬁlm yam, monoﬁlament, cast ﬁlm, and sheet. C 30 S combines outstanding processability with good mechanical properties.
C 30 S is particularly suitable to produce ﬁlm yam with the cast ﬁlm process. The film yam of C30S is used for baler twines, packaging twines, and ropes.
C 30 S is well suited for the production of monoﬁlament used for instance in brush and broom ﬁlling and technical applications. Other applications of C 30 S are monolayer or coextruded ﬁlm for packaging, thin sheet for stationery folders, and sheet for thermoforming.
C 30 S is also used for the extrusion of straws.
C 30 S is suitable for food contact