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Practical sheet | REF: FIC1278 V1

Discover hot gas (nitrogen) welding

Author: Delphine Mathilde COSME

Publication date: March 10, 2014 | Lire en français

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    4. Distinguish between amorphous and semi-crystalline thermoplastics

    4.1 Amorphous thermoplastics

    Amorphous thermoplastics are easier to weld than semi-crystalline ones, because their behavior is predictable. In fact, each degree of softening corresponds to a further degree of softening.

    This makes it easier to solder amorphous from semi-crystalline.

    • The sealing range is wider (10 to 20°C amorphous, 1 to 3°C semi-crystalline).

    • The material gradually softens.

    • In the event of overheating, smell followed by smoke and color give the alarm.

    • Heating power is lower.

    • Cooling is rapid.

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