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What is Semi-crystalline plastic?

Semi-crystalline plastics require a high heat and high energy/amplitude. Semi-crystalline materials attenuate the vibrations more and are more "spongey".
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What is Amorphous plastic?

A thermoplastic which has a random molecular structure. Examples are ABS, Polycarbonate, and Polystyrene.
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Welding Amorphous vs. Semi-Crystalline Plastics

Amorphous vs. Semi-crystalline are two types of plastics that should bear full scrutiny and research early on in the product design phase, which will avoid costly pitfalls once you get to the manufacturing process.
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