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Polyurethane Ester Foam Solutions

Polyurethane ester foam (also known as polyester or ester foam) is a flexible foam that exhibits high tensile strength and chemical resistance. Polyester foams are generally more rigid, stronger, and supportive than polyether foams. Like polyether foam, polyester foam has a wide array of desirable characteristics and applications in numerous industries. For example, its inherent shock absorption and impact resistant properties make polyester foams ideal for protecting items in both transit and storage. Also, polyester foam is more resistant to hydrocarbons and alcohols, which makes it ideal for applications where the foam material comes into contact with gases (such as nitrogen, oxygen, and carbon dioxide).

Polyester foam has an evenly distributed, open-cell type with a small cell structure. While this makes polyester foams more porous, it does enhance is compressibility and formability. This makes this type of polyurethane foam ideal for compressing and forming sheets to a desired thickness. The firm and supportive structure of ester foams makes it very resilient and ideal for cushioning, sound absorption, and shock and vibration dampening applications.

As one of the leading custom ester polyurethane packaging suppliers in California, Atlas Foam Products offers a full range of polyester foams that can be custom fabricated for your unique application and exact specification.

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ester polyurethane foam packaging

Features, Characteristics, and Benefits of Polyurethane Ester Foam

  • Uniform, open-cell structure that makes it a porous material
  • Flexible and lightweight
  • Greater tensile strength
  • Rigid and supportive properties make it ideal for cushioning and support
  • Excellent compressibility and formability
  • Ease of fabrication, forming, and manufacturing
  • Tear and abrasion resistant
  • Superior shock absorption and vibration dampening capabilities
  • High performance in both high and low temperatures
  • Resists the growth of mildew, mold, and fungus
  • High level of energy absorption for enhanced impact resistance
  • Excellent insulation properties
  • UV resistant
  • Low water vapor transmission

High-Quality Foam Products

Atlas Foam Products stocks a variety of different types of polyester foam with the unique characteristics to meet your application needs or industry requirements. We offer foam buns, blocks, planks, pads, and sheets in both standard and custom sizes. We also have 50 years of experience designing, fabricating, and manufacturing polyether foam products to your custom specifications.

Foam Colors

We offer polyester packing cushion foam in charcoal and blue.

Foam Density and Firmness

Our packing polyester cushion foams come in densities of 2# and 4#. We can help you pick the right type of polyester foam to ensure optimal performance while meeting your hardness and firmness requirements.

2# Density Specs

Our 2# density polyurethane ester foam meets the following specifications:

  • MIL-PRF-26514G, Type 1, Cl 2, Grade C
  • UL-94HF1
  • MVSS-302 General Dynamic #-0032 R C T1 Cl 1
  • Sizes range from 54” wide to 72” long

4# Density Specs

Our 4# density polyurethane ester foam is a denser product that offers enhanced impact resistance for optimal protection and support. Dimensions for this ultra-dense foam range from 54” wide and 96” long.

Foam Sizes and Dimensions

We supply polyester foam in sizes ranging from the following:

  • Up to 20” thickness
  • Up to 54” width
  • Up to 96” length

We can accommodate larger and custom sizes by bonding additional or multiple pieces together.

Specialty Foams

We offer specialty polyester foam, including Pyrell UL 94 HF1. This intumescent sound-absorbing and fire-retardant foam material provides excellent levels of efficiency, reliability, and predictability in high-stress applications and environments. It is ideal for both sound absorption and vibration dampening. When flame is applied, this foam material will char on the surface and form a protective shield between the flame and foam underneath. Depending on the quantity required for you next project, this fire-retardant specialty polyester foam can be special ordered with ample lead time.

  • Meets AMS3570E, Type 1 specification
  • Available in 2# density
  • Sizes range from 54” wide to 72” length


Contact our team for details about the availability of our Polyester Foam. 


Each order is individually quoted. Give us a call at 818-837-3626 or fill out a Quote Request Form with your project specifications for material, quantity, size, color, density, and any other requirements.

Repeat Orders

Atlas Foam will store all dies and production equipment. Dies remain the property of the customer, until called for. A purchase order or other authorization is sufficient for repeat orders.

Ready to Get Started?

Send us your project specifications and our team of experts will get you a quote as soon as possible.

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Our Capabilities and Services

With over 50 years of experience, Atlas Foam Products is one of the leading ester polyurethane foam packaging suppliers in California. Backed by our years of repeat customers and superior customer satisfaction, we are a reliable supplier of quality packing cushion foam, cost-effective solutions, and custom-fabricated products.

We offer the following capabilities and services:

  • Bond multiple or additional foam pieces for custom sizes
  • Combine different types of foams, each varying in size, shape, and density
  • Laminate or bond foam to secondary and customer-provided material for added functionality
  • Hand fabricate to customer specifications
  • Precision die cutting, shaping, and slitting
  • Foam flocking that enhance the packaging, aesthetic, and display qualities
  • Apply a pressure sensitive adhesive (PSA) backing to foam that ensure a strong bond between foam layers and materials

Atlas Foam Products has the knowledge, expertise, experience, and technology to guide you to the best foam solution while meeting the needs of any project or product specification. We are one of the top providers of custom polyurethane polyester foam suppliers in California.

Contact one of the foam experts at Atlas Foam Products to learn more about our products and services or to request a sample of polyester foam.

5 stars

They developed a simple yet sophisticated foam packaging for my product, which has a complex shape. They will provide great quality packaging solutions for your products.

-Ifat Glassman

Have Questions?

Give us a call at 818-837-3626 or fill out the form to send a message to one of our Foam Experts. We proudly provide services to local areas including Los Angeles, San Fernando Valley, Santa Clarita Valley, Simi Valley, Ventura, Oxnard, Orange County, Riverside, San Bernardino, and the Contiguous U.S.

Phone: 818-837-3626 Proudly Serving the Greater Los Angeles Area
Foam cutouts