Laboratory Scale Extrusion Compounding

thermoplastic extruder

Polyhedron Laboratories offers laboratory scale extrusion compounding services for the development of new and improved materials. Thermoplastics can be blended with additives, extruded, strand pelletized and then injection molded into ASTM (American Society for Testing and Materials) test bars for evaluation of properties. The lab extrusion compounding capabilities that Polyhedron provides include mixing and blending, as well as extrusion through a 1” high efficiency extruder.

The ASTM Standard provides guidelines for injection molding test samples of thermoplastic molding and extrusion materials (Active Standard ASTM D 3641-02). The ASTM standard description below is paraphrased from the ASTM website (www.astm.org). Due to copyright restrictions, Polyhedron Laboratories cannot make available copies of standards. Standards can be found and are available at www.astm.org, www.sae.org and www.iso.ch/iso/en as well as other respective standards societies and authorities.

ASTM D 3641-02

Standard Practice for Injection Molding Test Specimens of Thermoplastic Molding and Extrusion Materials

This procedure covers the general methods to be followed for injection molding test samples of thermoplastic molding and extrusion materials. This procedure is to be used to obtain uniformity in methods of describing the various steps of the injection molding process and to set up uniform standards for reporting these conditions. The precise conditions required to prepare suitable samples will vary for each plastic material.

  • Mixing and blending
  • Extrusion through a 1” high efficiency extruder

Polyhedron Laboratories offers laboratory scale compounding services for the development of new and improved materials. Thermo plastics can be blended with additives, extruded, strand pelletized and then injection molded into ASTM test bars for evaluation of properties.

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