Products

What is a Foaming Agent?

Foaming Agent
(Blowing Agent)

A substance which is capable of producing a cellular structure via a foaming process in a variety of materials that undergo hardening or phase transition, such as polymers and plastics.

Two Technologies:
Physical Blowing Agent (PBA)
(Gas Injection)

A cellular structure is created by injecting gas in a super critical state directly into the barrel through equipment modifications.

For high and medium density foams, gases utilized are usually N2 or CO2.

Chemical Blowing Agent (CBA)
(Chemical Foaming Agent, CFA)

A cellular structure is created by a chemical reaction and heat during the plasticating process.

Gas generated is usually CO2, N2, or a combination for high-to-medium density foams.

Why Use Chemical Foam?
  • Reduces Cost
  • Reduces Weight
  • Eliminates Sink
  • Higher Production Efficiency
  • Reduces Warpage
  • Improves Thermal Insulation
  • Improves Sound Insulation
  • Easily Scalable
  • Easy Startup Cost
CFA Process and Effect in Injection Molding
  • CFA use will reduce viscosity and increase flow
  • Foam should expand once it enters the mold
  • Pressure drops will expand the CFA
  • Expanding bubbles “Pack” the part with minimal machine energy
  • If you want 10% weight reduction, reduce shot size by 10%
CFA Process and Effect in Extrusion
  • CFA use will reduce viscosity and increase flow
  • Foam should expand once it leaves the die
  • Pressure drops will expand the CFA
  • Processes will run cooler with Endothermic CFA (Absorbs Heat)
  • Processes will run hotter with Exothermic CFA (Expels Heat)