Polypropylene (PP) Injection Molding

Plastic Injection Molding with Polypropylene Plastic (PP)

Texas Injection Molding has extensive experience in polypropylene (PP) injection molding for a wide variety of applications such as caps and closures, plastic hinges, electrical housings, ice chests and coolers, buckets, pails, cups, kitchenware, and various other consumer goods, including OEMs for:

  • Toys
  • Storage containers
  • Sporting goods
  • Appliances
  • Power tools
  • Dishwasher-safe food containers and cups

Industrial Applications of PP Injection Molding:

  • Medical products, including autoclavable labware
  • Construction products
  • Hardware
  • More

Polypropylene injection molding is used in many applications and industries because of its beneficial thermal, chemical, physical and mechanical properties.

Properties of Polypropylene:

Polypropylene is a low cost, lightweight polymer that has excellent chemical resistance.  Polypropylene is tough and has good resistance to fatigue and can be reinforced with glass fiber or minerals to enhance mechanical properties.

  • Tough, versatile
  • Lightweight (low specific gravity)
  • High heat resistance for commodity plastic
  • Good chemical resistance
  • FDA and medical grades available
  • Polypropylene is not biodegradable, but like most thermoplastics can be recycled and re-processed.

Polypropylene is a versatile thermoplastic polymer with many cost/performance benefits and is available in three types.

Three General Types of Polypropylene:

  • Homopolymer
  • Random copolymer
  • Block (impact) copolymer

Its overall toughness, flexibility and heat resistance make polypropylene injection molding an ideal process in manufacturing consumer products, and FDA grades are appropriate for food, toy and medical applications. Its rigidity and tensile strength can be improved by adding talc, mineral or glass reinforcements.

With fast and economical access to large amounts of PP thanks to long-term relationships with the industry’s top suppliers, Texas Injection Molding purchases and stores large quantities of PP in multiple silos, offering economies of scale we can pass along to our customers.

Texas Injection Molding processes standard injection molding, thin-and thick-walled molding and structural foam molding for standard and custom grades of PP.

Grades of Polypropylene Plastic:

  • Talc- and glass-filled grades
  • FDA-recognized grades
  • Custom blends with:
    • Color concentrate
    • Liquid color
    • UV stabilized PP

If we can be of assistance with your injection molding project call us at 281 489-4292 or use our Contact Form.