Material Drying 2 views

EVA foam cells are uneven

Problem Phenomenon

EVA foamed sheet cells 50-500μm, uneven in size

Cause Analysis

AC blowing agent unevenly dispersed, dry powder directly added; uneven melt viscosity

Solution

1) Blowing agent masterbatch method; 2) Fully mix EVA; 3) Crosslinking agent masterbatch method; 4) Mold ±2°C

Key Takeaway

Cell uniformity depends on blowing agent dispersion and crosslinking uniformity

EVA foam uneven cells blowing agent masterbatch crosslinking uniformity mold temperature control

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