Toxic Chemicals in Foam Blocks: Why They’re Not Safe for Toddlers

Summary: Are Foam Blocks Safe for Toddlers? While foam blocks are commonly used for building and play among young children, their apparent safety harbors hidden risks. Manufacturing processes for these blocks often involve harmful chemicals that can leach out over time, posing significant threats to toddlers. Additionally, foam blocks are flammable and susceptible to allergic reactions due to chemical exposure. Therefore, it is recommended to exercise caution when using foam blocks for toddlers and consider safer alternatives.

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Are Foam Blocks Safe for Toddlers?

Many parents gravitate towards foam blocks for their young children due to their lightweight and seemingly harmless nature. However, a closer examination reveals a disturbing reality – foam blocks pose significant risks for toddlers.

Foam blocks are manufactured by compressing synthetic plastics, a process that unfortunately produces harmful chemical byproducts. These chemicals can leach out of the foam over time, posing a serious threat to young children. Additionally, foam blocks are highly flammable, presenting a risk of fire and burns.

The dangers don’t end there. These chemicals can easily be inhaled, ingested, or get into a toddler’s eyes, leading to severe allergic reactions. Symptoms of exposure can include:

  • Difficulty breathing
  • Skin rashes
  • Eye irritation
  • Nausea and vomiting
  • Fever

Given these significant risks, it is prudent to exercise caution when considering the use of foam blocks for toddlers. Opt for alternative building materials that prioritize safety and peace of mind for your little ones.

EVA Material: Rubber-like Properties and Applications

EVA (Ethylene Vinyl Acetate) is a versatile elastomeric polymer known for its rubber-like properties and diverse applications. This material exhibits excellent softness and flexibility, making it ideal for various industries.

Composition and Characteristics

EVA is a co-polymer of ethylene and vinyl acetate. Its composition allows for customization of its physical properties, including hardness, elasticity, and thermal resistance. The material has good low-temperature toughness, stress-crack resistance, and is also resistant to heat and ultraviolet radiation.

Rubber-like Behavior

EVA material behaves similarly to rubber in terms of softness and flexibility. Its elasticity allows for deformation without permanent damage, making it suitable for applications involving bending, flexing, or stretching. This property is particularly where to buy eva foam valuable in industries such as automotive, aerospace, and consumer products.


EVA material finds numerous applications due to its versatile properties. Some common uses include:

  • Automotive: Bumpers, gaskets, vibration dampers
  • Aerospace: Aerospace components, seals, insulation materials
  • Consumer Products: Toys, sports equipment, packaging materials
  • Medical Devices: Implant materials, surgical instruments

Advantages of EVA Material

  • Excellent softness and flexibility
  • Good low-temperature toughness
  • Stress-crack resistance
  • Resistance to heat and UV radiation
  • Biodegradability and recyclability


EVA material is an elastomeric polymer with exceptional rubber-like properties. Its versatility and diverse applications make it a valuable material in various industries. Its excellent softness, flexibility, and resistance to various environmental factors make EVA an ideal choice for numerous applications.

What is another name for EVA foam?

EVA foam, a widely recognized thermoplastic elastomer material, boasts immense popularity due to its versatility and diverse applications. Interestingly, this remarkable material is also known by another, albeit less commonly used, name: ethylene-vinyl acetate copolymer foam.

Its exceptional characteristics, including flexibility, resilience, and lightweight nature, have led to its widespread use in various industries. From cushioning materials in packaging to protective gear for athletes, EVA foam finds its way into numerous products.

Key points:

  1. EVA foam is also known as ethylene-vinyl acetate copolymer foam.
  2. It is a thermoplastic elastomer material.
  3. EVA foam is known for its versatility and broad range of applications.

Density of Foam Blocks

Foam blocks are versatile materials widely used in various applications. Understanding their density is crucial for selecting the right block for your needs.

Expanded polystyrene blocks are typically produced in densities ranging from 0.7 pounds per cubic foot (pcf) up to 3 pounds per cubic foot (pcf). This density range offers a balance between affordability, insulation value, and structural integrity.

Factors Affecting Foam Block Density:

  • Manufacturing process: Different manufacturing techniques result in variations in density.
  • Material composition: The type of polystyrene resin and other additives influence density.
  • Cell size: The size and uniformity of the cells within the foam block affect its density.

Common Densities of Foam Blocks:

  • Low-density: 0.7-1.5 pcf – Ideal for lightweight applications like packaging materials and insulation.
  • Medium-density: 1.5-2.5 pcf – Suitable for general purposes like structural insulation and flotation.
  • High-density: 2.5-3 pcf – Provides excellent thermal insulation and structural strength.

Special Densities:

For specific applications, higher densities beyond 3 pcf are available. These denser blocks offer increased structural integrity and thermal performance. However, they are typically more expensive than lower-density options.

Importance of Density:

The density of a foam block plays a crucial role in:

  • Thermal insulation: Higher density blocks offer better thermal insulation.
  • Structural integrity: Denser blocks are more resistant to deformation and collapse.
  • Durability: Blocks with higher density are more durable and can withstand greater weight loads.


Q: Are foam blocks safe for toddlers?

A: No, foam blocks pose significant risks for toddlers due to harmful chemicals leaching out, flammability, and potential allergic reactions.

Q: What are the risks of exposing toddlers to EVA material?

A: Possible symptoms of exposure include difficulty breathing, skin rashes, eye irritation, nausea, vomiting, and fever.

Q: What are some of the applications of EVA material?

A: EVA material is used in various industries such as automotive, aerospace, and consumer products.

Q: What are the advantages of EVA material?

A: Excellent softness, flexibility, low-temperature toughness, stress-crack resistance, heat and UV resistance, and biodegradability.

Q: What is another name for EVA foam?

A: EVA foam is also known as thermoplastic elastomer.