Overcoming Challenges in Solventless Adhesive Applications for PET/AL Composite Films: Key Insights for Global Buyers

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Critical Factors Affecting Composite Line Pressure

• Surface Tension Mismatch
  • Adhesive Flow & Equipment Smoothness

    Root Causes & Mitigation Strategies

    • Contrary to popular belief, moisture reacting with -NCO groups in adhesives generates minimal CO₂ (theoretical yield: 0.015g CO₂ per 1g prepolymer). Key drivers of bubbles include:

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        • • Avoid "one-size-fits-all" pressure settings. Tailor parameters to material combinations.

          • High-viscosity adhesives improve show-through resistance but require precise temperature control for leveling.

          • Partner with suppliers offering low-VOC, fast-curing adhesives designed for rigid substrates.

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