Foaming Technologies from CPST

How CPST products modify EVA foam

• CPST has core technologies to modify various EVA foam systems to provide performance of polymer matrix or surface polarity and morphology
• Patented technologies
• Introducing nano-fillers to maximize activity of functional groups through reactive extrusion
• Homogeneous nucleation & excellent compatibility
• Maintain good physical properties at higher expansion foams
• Many commercialized products for EVA foam in footwear applications

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Core Technology of CPST modifiers

• Organic-inorganic hybrid between nano inorganic particle and polar functional resins thru reactive extrusion to attain ultimate physical properties & stable foam structure
• Finer cell via homogenous nucleation and higher melting strength with hydroxy groups from both nano particle and functional specialty polymers

Chemistry of CPST Modifiers

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Homogenous Nucleation

Better homogenous nucleation (miscibility of additives) provides a higher number of nucleation sites, thus a finer cell structure with higher melt strength at high expansion ratios

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Water + Oil

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Water + Oil After shaking⇒ Separation

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Water + Oil + Soap
(Ecomax  function)
After shaking ⇒ Homogenous

Melt strength

• Melt strength is one of the key properties for making high performance
foam with a closed cell structure at desired expansion ratios
• Similar concept : Bubble structure of soap solution

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CPST products can provide:

Calculate Savings

Cost Savings

  - EVA replacement
  - 10 ~ 35% saving

Business Growth

Environmental 
friendliness

  - Reduction of oil-based synthetic materials including EVA 
  - Bio-degradable foam

Sprint Runner

Performance improvement

  - Light weight(Lower density)
  - Split tear
  - Abrasion
  - Compression set

The following CPST products use this foaming technology:

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Phone:

+82)2-417-0413

Fax:

+82)2-417-0418