Insulation Materials

PREIS & CO is a manufacturer of insulation materials which are used in the electrical industry for insulating round and flat wires. We are processing materials like textile glass, cotton and polyester yarns as well as their mixture products.

Due to our flexibility and high quality products leading companies in the field of wire insulation are using our products already for a long time. The raw materials are removed from the plastic bobbins and winded with especially for this application designed machines according to the customers requirements. A constant pulling force is guaranteed by a fully automatically working control. As carrier for the winded yarns mainly paper tubes are used.

Designation of glass fiber and glass fiber/polyester spools

i.e. glass fiber spool type: EC5- 5,5 tex Z40 x 16

  • E.............E-glass (Electrical glass formulation)
  • C.............continuous filaments
  • 5..............filament diameter in μm
  • 5,5 tex.....weight in gram per 1.000 meter
  • Z40.........direction of twist (Z or S) as well as the
  • number twists per meter
  • x 16.........number of yarns winded together


i.e. glass fiber/polyester: (EC5- 5,5 PES 50) 11 tex x 20

  • EC5-5,5...E-glass (see designation above)
  • PES..........Polyester
  • 50.............dezitex = 5 tex
  • 11 tex....... weight in gram per 1.000 meter
  • x 20......... number of yarns winded together


Further information about our range of insulating materials can be found in our download area.