Mold Base Terminology - A
- ABS (Acrylonitrile -Butadiene-Styrene)
- A Terpolymer produced from Acrylonitrile and styrene liquids and butadiene gas that are polymerize together in a variety of Ratios to produce the family of ABS resins.
- Accelerated Ejection
- Rack and pinion linkages used to extend the reach of the ejector pins, so that the ejector pins move before the main ejector plate comes all the way forward.
- Acetyl
- Rigid thermoplastic with properties similar to zinc, aluminum, and other metals. The molecular structure of the polymer is of a linear Acetyl, consisting of unbranched polyoxymethylene chains
- Acrylic
- A synthetic resin from acrylic acid or a derivative thereof. Clarity is the property achieved at processing temperatures.
- Amorphous Phase
- Devoid of crystalline (non-crystalline). Most plastics are amorphous at processing temperatures.
- Angle Pin
- The fixed pin that engages a mold slide to move it when the mold opens and closes.
- Annealing
- Heating, then gradually cooling a molded part to relax stress with no shape distortion.
- Autoclave
- Closed vessel for conducting a chemical reaction or other operation under pressure and heat.
- Average Molecular Weight
- The molecular weight of a polymer determined by viscosity of the polymer in a solution at a specific temperature. This gives an average molecular weight of the molecular chains in the polymer independent of between weight average and number average molecular weight.
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