Made in Italy

PVC and HFFR Compounds
tailor-made for industries
that leave no room for errors.

Advanced technical formulations for cables, construction, automotive and transport. Italian production ISO 9001:2015 certified, for three generations.

Request a formulation Discover the products
50+
Years of experience
2
Product lines
ISO
9001:2015 Certified

Our compounds

Two product lines.
Every industrial need.

Rigid, plasticised PVC and HFFR/LSZH compounds formulated to technical specification. Consistent performance, certified quality, punctual delivery.

Line 01

Rigid and plasticised PVC

Rigid compounds: Formulations for extrusion and moulding: profiles for windows and roller-shutter boxes, pipes for construction and infrastructure, high-strength technical components. Excellent thermal stability, colourability, RoHS compliance.
Plasticised compounds: Flexible blends for electrical cable jackets and insulation, flexible pipes, extruded and moulded technical articles. High plasticity, ageing resistance, IEC compliance.

Construction Pipes Profiles Automotive Electrical cables Film
Discover the PVC range
Line 02

HFFR / LSZH

Halogen-free flame retardant blends for cables in critical environments: metros, tunnels, ships, airports. Zero acidic emissions. Compliant with EN 50305, IEC 60332.

Infrastructure Transport Marine Construction
Discover Evolut HFFR

Premium HFFR / LSZH Line

Fire safety
without compromise.

Evolut is the HFFR/LSZH compounds line developed in-house by STIR Compounds for professional and safe applications. Zero halogens, very low smoke emission, maximum reliability in flame propagation.

  • Halogen Free No halogenated gas emissions in case of fire
  • Low Smoke Guaranteed visibility in evacuation paths
  • CPR Euroclass B2ca Compliant with EN 50525 · IEC 60332 · IEC 61034
  • Range −40°C / +90°C Consistent performance in every operating environment
Metro & Tunnels Hospitals Ships Airports Data Center
Request Evolut samples
IEC 60332
EN 50525
CPR B2ca

Tailor-made formulation

The right compound
doesn't exist yet.
We formulate it.

Every application has specific requirements. For over 50 years we have been formulating PVC and HFFR custom compounds to meet the technical needs of our customers. No catalogue: only tailor-engineered solutions.

  1. Technical brief You send us the specification: material, process temperature, reference standards, cost target.
  2. R&D formulation Our laboratory develops and tests the blend in-house, optimising performance and processability.
  3. Samples in 10 days You receive certified samples, complete technical data sheet and commercial offer with no purchase obligation.

In-house R&D laboratory

The right formula
starts from data.

The STIR Compounds in-house laboratory is the heart of our formulation capability. Every compound is developed, tested and validated internally with dedicated instrumentation and specialised chemists before reaching production. Zero outsourcing. Full confidentiality.

10.000+ Formulations developed Custom compounds developed to customer specification from 1973 to today.
48h Technical response time From brief reception to initial feasibility assessment.
10days Samples ready Average time from formulation to certified sample delivery.
100% Tested in-house Every production batch is analysed in the STIR laboratory before shipment.

Instrumentation

  • Capillary rheometer
  • MFI Tester
  • DSC / TGA
  • Shore A/D Durometer
  • Tensile / elongation
  • Flame test IEC 60332
  • Smoke analysis NF X 70-100
  • CIE Lab colorimetry

The right compound
doesn't exist yet?

For over 50 years we have been formulating custom PVC and HFFR compounds. No catalogue — only solutions engineered to your technical requirements.

Request a formulation
Email
info@stircompounds.it
Phone
+39 0883 3418111
Site
STIR Compounds s.r.l.
Via Trani 177 — 76121 Barletta (BT)