With so many foam types, it can be hard to choose the right one for your needs. EVA and polyurethane are two common types of foam. But these two types of foam are often like comparing apples to oranges — they have different properties and applications.
As a foam packaging expert, we know the ins and outs of foam. Keep reading to discover the core differences between these two types of foam, and get our verdict on which one works best for packaging.
What is EVA Foam?
EVA foam, or ethylene-vinyl acetate, is a dense, rigid material that is water resistant. This foam is flexible and often made from sheets. It’s often used in shoes, floor mats, crafts, and cosplay. Constructing products from EVA foam often involves cutting, sculpting, and using heat to form shapes in place. Once set, EVA foam will keep its shape. However, it can’t withstand high pressure or weight.
Two cosplayers carry props that have been made using EVA foam, paint, and other materials. Photo by Muhammad Faiz Zulkeflee on Unsplash
This type of foam is excellent for these types of applications where a product will experience a lot of moderate repeat weight (such as shoes and floor mats) as well as in crafting applications where it can be formed into a desired shape. However, it’s not a good choice for packaging applications because of those very same properties. It may squish, warp, or rip during transit.
What is Polyurethane Foam?
Polyurethane foam is a less dense material with a softer, cushiony feel that allows for greater shock absorption. This type of foam is ideal for packaging and seating to provide structural security and insulation.
This product packaging features a custom polyurethane foam case insert.
Benefits of Polyurethane Foam in Packaging
- Soft and plush for hands-on touching
- Extremely flexible
- Sustainable - all post-industrial waste is recycled and product can be recycled after use
- Easy to fabricate and cut
- Accepts Pressure Sensitive Adhesives (PSA) to add more fabrics and films to the surface
Curious to learn more benefits of polyurethane foam packaging? Check out our related blog.
Related Content: Benefits of Polyurethane Foam
EVA or Polyurethane Foam Sheets?
EVA typically comes in foam sheets, but polyurethane is also available in sheet form. Polyethylene sheet foam also works better in packaging applications, to wrap products for transit.
Benefits
- Stable across a wide temperature range
- Performs reliably from -250°F up to 226°F
- Won’t tarnish or corrode sensitive metals when the 1m film has been applied
- Outstanding breathability (protects against moisture and mildew)
- Flexible & easy to handle
- Very buoyant - ideal for floating containment systems
- Tear-resistant
- High cushioning and compression strength
- Minimizes shock and vibration
- Flexible and resilient
- Can be re-used and recycled into new foam
- Highly resistant against water, fungus, and dust
Related Content: Polyethylene Foam Sheets w/ 1m Barrier
Find Your Best Option with a Packaging Expert
As a leader in the packaging industry, Foam Industries has set the bar with an unwavering commitment to quality, exceptional client service, and constant innovation. Through our extensive inventory of endlessly customizable products, we ensure you find exactly what you’re looking for. Reach out to us today to get assistance finding a foam that best suits your packaging needs.
Foam Industries is a custom protective packaging company specializing in foam – with additional wood and plastic fabrication services. Our custom foam fabrication services are ideal for any type of packaging, display, or support service needed – from design to finished product.
