Chemical Foaming Agents for Direct Gas, Film and Sheet Extrusion Applications...
Reduce Polymer & Gas Usage, Control Cell Size & Foam Density, Increase Line Speeds, etc.



Whether your direct gas extrusion process uses tandem extrusion or a twin screw extruder, Bergen International has a chemical foaming/nucleating agent for your application. Our Foamazol CFAs provide excellent nucleation for gasses such as CO2, Nitrogen, Z2, Hydrocarbons, and other gases.

Our Foamazol™ 41 and Foamazol™ 42 provide fine, uniform cell structures in direct gas extrusion of olefins. Our Foamazol™ 73S is used in direct gas extrusions involving styrene.

If VOC’s are a concern, the gases evolved by Foamazol™ allow for reduced usage of the physical blowing agent gas. Hydrocarbon gas usage has been reduced by as much as 17% in some instances with Foamazol nucleating agents.


Use of Foamazol™ CFAs allow direct gas extruders to:

• Process with Faster Extrusion Rates
• Produce Consistent High-Quality Foam Structure — very fine, uniform cell structure with consistent density
• Better Control of Cell Size
• Reduced Polymer Usage
• Reduced Gas Usage


Our Direct Gas Film and Sheet Extrusion/Nucleating CFA product line includes:


Cell Nucleation

Process Base Resin Recommended Grade
Direct Gas Extrusion LDPE,PP Foamazol™ 41
Foamazol™ 42
Foamazol™ 71
Foamazol™ 72
PS Foamazol™ 73S


Density Reduction

Process Base Resin Recommended Grade
Sheet Extrusion LDPE Foamazol™ 21
Foamazol™ 31
Foamazol™ 92
HDPE Foamazol™ 21
Foamazol™ 31
PP Foamazol™ 22
Foamazol™ 42
PS Foamazol™ 73
PET Foamazol™ 63



Custom Chemical Foaming Agent Products and Customer Assistance

Bergen International can also work with you to customize CFAs for your Direct Gas Film and Sheet Extrusion/Nucleation process. Our staff has extensive formulating and processing experience and can assist you in developing a CFA to best meet your requirements.