Polystyrene (PS) Plastic Injection Molding

Retlaw Industries produces high-quality custom Polystyrene parts and components for a wide range of applications across industries. Polystyrene (PS) is a synthetic thermoplastic polymer made from styrene and is one of the most used materials in plastic injection molding. Polystyrene (PS) is non-toxic and odorless making it the predominant plastic of choice for businesses in the food packaging and automation industries.

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What is Polystyrene (PS) Plastic?

Polystyrene (PS) is a synthetic thermoplastic polymer made from styrene. PS is considered an excellent electrical insulator and offers impressive chemical resistance properties. The solidity and clarity of PS make it useful for everything from electronics and plastic utensils to automotive parts and more. The SPI code (resin identification code) for Polystyrene is 6 and is found inside a triangle consisting of three arrows on PS packaging and containers.

Why is Polystyrene So Commonly Used?

Polystyrene is commonly used in many industries because it is an inexpensive material with valuable mechanical properties. PS can take a solid or foam form and does not react with other materials (inert). Considered an easy material to work with because it shrinks less than other injection mold plastics, PS can be used for a wide range of applications. Common polystyrene products include disposable coffee cups, plastic food boxes, plastic cutlery, and packing material.

Polystyrene (PS) Material Characteristics

Polystyrene Plastic Injection Molding Service

Polystyrene is lightweight, hydrophobic, and easy to form into various shapes, making it a common plastic material used in everyday items. The melting point for PS ranges from 240 degrees to 270 degrees Celsius, which is considered relatively low when compared to other thermoplastics. Known for its chemical stability, PS does not react with other materials easily. Polystyrene can be reused and is highly recyclable. Some of the most notable benefits of PS include:

  • Resistance to bacterial growth
  • Resistance to moisture
  • Lightweight
  • Provides insulation
  • Durable
  • Recyclable

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Polystyrene (PS) Plastic Specifications (at Room Temperature)

Chemical Formula (C8H8)n
Melting Point (°C) ~215°C
Tensile Strength ~7700 psi
Impact Strength ~0.8 ft-lb/in notched Izod   
Hardness Level (Rockwell) R75
Flexural Modulus ~12000 psi

Contact Retlaw Industries for a quote on manufacturing plastic injection molded Polystyrene (PS) parts.

Common Applications for Polystyrene

Polystyrene plastic products offer many advantages as an injection-molded plastic solution. It's an affordable and versatile material, and it allows businesses throughout the United States to use it for a wide variety of applications. Common applications include:

Plastic cutlery

Polystyrene Plastic for Plastic Cutlery

Test tubes & petri dishes

Polystyrene Plastic for Test Tubes

CD cases

Polystyrene Plastic for CD Cases

Smoke detectors

Polystyrene Plastic for Smoke Detectors

Food containers

Polystyrene Plastic for Food Containers

Packing material

Polystyrene Plastic for Packing Materials

 No matter what type of business you work in, Retlaw can fabricate polystyrene components for you to your exact specifications.

Why Choose Retlaw for Polystyrene Injection Molding?

The thermo-plastic manufacturing experts at Retlaw Industries are fully committed to quality craftsmanship at every level. As an industry leader in part design and engineering with over 40 years of experience, our shop has the resources and capabilities to deliver exceptional results every time. We are always ready to take on new projects, no matter the size or complexity. With transparent pricing, a long track record of success, and a team dedicated to your success, Retlaw Industries is the clear choice for businesses that demand nothing but the best.

Plastic Injection Molding Services

Design & Engineering: Customized design and engineering for versatile Polystyrene plastic applications.

Tooling: Precise tooling for efficient Polystyrene plastic molding.

Molding: High-quality molding for consistent Polystyrene plastic products.

Assembly: Seamless assembly of complex Polystyrene plastic components.

Prototyping: Rapid prototyping to refine Polystyrene plastic designs quickly.

Creating Custom Plastic Parts in Over 10 Industries

Nationwide Plastic Injection Molding Services

Retlaw Industries manufactures polystyrene plastic products designed to meet the unique needs of businesses in Colorado, Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, Washington, Wisconsin, and beyond. Retlaw Industries supplies polystyrene products used in manufacturing, packaging, construction, and more.

Contact the polystyrene part manufacturers at Retlaw today to get more information on your next project.
Retlaw sells in all 50 states. Let's get together and build a solution.
For over 40 years, Retlaw has produced quality injection molding tools which has led us into thermoplastic injection molding for a wide variety of industries. With over 19 injection molding machines, decades of collective experience, and over 50,000 square feet under roof and room to expand, we are always ready for your new projects.
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