Job Description:

• 1) Tests fiberglass products, such as bonded cord, insulation mats, roving, and staple lengths to determine if products conform to specifications: Determines breaking strength of bonded cord by mounting sample on arms of testing machine and moving machine controls that apply force necessary to rupture sample.

• 2) Weighs insulation mat, bonded cord, or roving on balance scales before and after drying and computes percentage of moisture, wax binder, and solids in sample, using slide rule.

• 3) Observes machines in operation to detect worn equipment, irregular roving packages, or dull cutters.

• 4) Examines products for defects, such as dirt, frayed ends, clumps in mats, discolorations, and variation in number of ends.

• 5) Measures staple lengths to verify conformance to standards, using ruler.

• 6) Tests speed of machine spindles, using tachometer.

• 7) Records tests results on quality control records and notifies production supervisors, machine repairer, and workers when machine operation, material, or products vary from standards.

• 8) May perform physical tests to determine yarn porosity, diameter, or denier.