Storage for raw materials

We permanently hold a buffer stock of basic raw materials in our warehouses, which cover the consumption requirements for at least 60 days.

The raw materials that are permanently on stock are the following:

  • various stocks of rubber (NR, SBR, EPDM, etc.),
  • rubber compounds for various applications,
  • EP, EE, XE type textiles,
  • miscellaneous.


Dosing is the first stage in the technological flow of production of rubber compounds.

According to a pre-established recipe, which is verified beforehand, the elements are measured for mixing in masticators and drums.


Mixing is the process of homogenizing of the elements of a rubber mixture, which takes place in special equipment, under specific conditions.

The mixing operation takes place in two stages, according to a certain order in which the elements are introduced in the masticator.

  • Execution of pre-mixture in the masticator
  • Completion of mixture in the drum


  • 60 l Masticator = 2 pc
  • 40’’ Drums = 3 pc
  • 80’’ Drums = 5 pc
  • Cooling and palletizing line = 1 pc



Ikosar company has its own laboratory equipped with modern equipment and specialized personnel.


  • MDR 2000 Rheometer – ALPHA TECHNOLOGIES
  • Tensiometer 2000 – ALPHA TECHNOLOGIES;
  • Abrasiometer 6103-4 LAB;
  • Durometer ZWICH-SH A;
  • Oven for determining the heat and oil resistance of conveyor belts
  • Stand for determining the fire resistance of conveyor belts.
  • Stand for determining the antistatic properties of conveyor belts.

Tests performed: 

Tensile strength of rubber mixtures, tearing, elongation, adhesion, abrasion, density, temperature, fire.


Calendering is the operation that precedes vulcanization of belts and consists in applying of a rubber layer onto the textile insertion.

The rubber rolling and encasing operations also take place on calenders.


  • BUZULUK 1300 x 500 Calender – 1 pc.
  • BRIDGES 1800 x 600 Calender – 1 pc.
  • Buzuluk 1800 x 600 mm Calender – 1 pc.
  • Encasing installation – 2 pc.



Vulcanization takes place in presses fitted with a tensioning system and with electronic continuous control systems for the working parameters:

  • Temperature control
  • Pressure control
  • Vulcanization time control


  • Vulcanizing press 6000 mm x 800 mm – 1 pc
  • Vulcanizing press 6000 mm x 1100 mm – 1 pc
  • Vulcanizing press 4000 mm x 1700 mm – 1 pc
  • Vulcanizing press 6000 mm x 1300 mm – 1 pc
  • Press for vulcanized gaskets and small parts, with different sizes of pans – 24 pcs



The quality control consists in:

  • Visual control – surface
  • Dimensional control – compliance with tolerances
  • Characteristics control (hardness, abrasion, etc.)
  • Control of recorded working parameters (the working parameters recorded during production are checked, so as to make sure that no deviations occur)



After the quality control, the products are labelled, packed and delivered, or temporarily stored.