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What Is Foaming Agent Masterbatch?


What Is Foaming Agent Masterbatch?

Foaming agent masterbatches are available for most thermoplastics. Choosing the proper masterbatch grade is important: It should activate and foam at a temperature slightly below the normal processing temperature of the host polymer.

Foaming agent masterbatches with a low melting point can melt too early at the barrel wall, and the resulting gas can partially or completely escape through the hopper. In this case the temperature of the feeding zone should be adjusted to a lower temperature, to prevent the premature decomposition of the foaming agent.

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