PVC, Rigid

PVC, Rigid Characteristics & Uses

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Please Note: PMC does not sell the material listed below.  We only use the material list to inform visitors that we are experienced in processing these materials for many fine products.

MaterialPVC, Rigid
Chemical NamePolyvinyl Chloride, Rigid
StructureAmorphous
OpacityClear to Opaque
StrengthTough
Specific Gravity1.45
Shrinkage0.4% to 1.0%
Melting Point185°F
Deflection Temperature150.8°F-192.2°F
Service Temperature140° F
ApplicationsRigid PVC is used in a broad range of applications, including:

  • Building & Construction

  • Exterior Siding

  • Windows

  • Piping

  • Pipe Fittings

  • Sprinkler Systems

  • Office Furniture Edging

  • Bottles

  • Non-Food Packaging

  • Cards, such as Membership or Bank Cards

AdvantagesRigid PVC is a versatile thermoplastic resin that’s rigid and tough under ambient conditions. To allow injection molding, additives are mixed with PVC, including stabilizers, lubricants, processing aids, pigments, impact modifiers and fillers. Some of its other advantages include:

  • Good Strength

  • Flame Retardant

  • High Clarity

  • Good Outdoor Weathering Characteristics

DisadvantagesTypically, lower molecular weight grades of this resin are used in injection molding as the high molecular weight grades are more difficult to process. It’s very important to process the material at the correct melt temperature to avoid decomposition and production of hydrochloric acid. Other limitations of Rigid PVC include:

  • Poor Thermal Capability

  • Sensitive to UV Degradation

  • Sensitive to Oxidative Degradation

  • Higher Molecular Weight Resin is More Difficult to Process

  • Stiff Flow Rate with Narrow Processing Range