4.2. Mixing and Blending

In many cases materials used to manufacture products from thermoplastics are used as received. However, some of them need to be prepared for further processing by the addition of other ingredients to attain specific processing characteristics and/or physical and mechanical properties. This process often referred to as compounding is essentially preparing a uniform mixture by blending and/or mixing. The method of preparing a uniform mixture depends on the nature of the components. If all components are solids, they are blended in a blender using paddles, screws, ribbons, or propellers, and the process is referred to as dry blending. If they are all liquids, the blending is done by simple mixing with the use of some sort ...

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