Compounding

Compounding

Solutions for material formulation, dispersion, and stability

In compounding, the material’s final performance, production stability, and processability depend on the ability to integrate pigments, additives, and fillers in a controlled and repeatable manner.

Dispersion, rheological behavior, thermal stability, and formulation compatibility directly influence compound quality, process continuity, and the reliability of downstream applications.

Free Flow supports companies, R&D teams, and production departments in developing optimized formulations to enhance functional integration, performance stability, and material industrialization.

We also assist clients in managing regulatory requirements associated with various material applications, helping to define formulations that comply with key technical and application standards.

Key challenges

In compounding, non-uniform dispersion of pigments and additives can result in:

  • Agglomerates;
  • Specks;
  • Streaks;
  • Aesthetic and functional instability;
  • Performance variability.

The quality of the dispersion directly affects aesthetics, mechanical properties, and production continuity.

How Free Flow provides support

We work on:

  • Carrier selection;
  • Formulation compatibilization;
  • Shear management;
  • Thermal stability of the system;
  • Optimization of pigment and additive dispersion.

The goal is to obtain a more homogeneous, stable, and repeatable compound.

Key challenges

The rheological stability of the compound directly affects the processability and reliability of downstream processes.

The most frequent issues concern:

  • Target MFI check;
  • Melt stability;
  • Lot-to-lot differences;
  • Variability of PCR materials;
  • Instability during extrusion or molding.

How Free Flow provides support

We support formulation activities aimed at:

  • Improve rheological stability;
  • Check the process window;
  • Increase compound repeatability;
  • Reduce formulation variability;
  • Optimize material behavior in downstream processes.

Expected result

  • More stable downstream process;
  • Improved production continuity;
  • Reduction of operational instabilities;
  • More consistent and controllable performance.

Key challenges

Stabilizing the material requires the right balance between:

  • UV resistance;
  • Thermal stability;
  • Durability in application;
  • Formulation compatibility.

Interactions between additives, pigments, and contaminants can compromise the performance and durability of the compound.

How Free Flow provides support

We develop formulation architectures geared towards:

  • HALS/AO synergies;
  • Choice between polymeric or low molecular weight systems;
  • Compatibility with pigments and contaminants;
  • Stability during processing and end-use.

The goal is to improve the material’s reliability and durability over time.

Key challenges

The incorporation of functional additives requires a proper balance between surface properties, processability, and application requirements.

The main challenges concern:

  • Antistatic agents;
  • Briefs;
  • Anti-blocking;
  • Anti-fog;
  • Compatibility between additives;
  • Trade-off between COF and printability.

How Free Flow provides support

We support formulation activities for:

  • Improve additive compatibility;
  • Control surface behavior;
  • Optimize functional performance;
  • Balancing technical and production requirements;
  • Increase performance stability over time.

Key challenges

The use of PCR and PIR materials introduces significant formulation variability and critical issues related to:

  • Odors;
  • Gels;
  • Contaminants;
  • Black specks;
  • Performance instability;
  • Lot-to-lot variability.

How Free Flow provides support

Our development activities include:

  • Improved sorting;
  • Compatibilization of materials;
  • Formulation stabilization;
  • Color masking;
  • Improvement of processability;
  • Reduction of non-conformities.

The goal is to increase reliability and production continuity, even when dealing with complex recycled materials.

Definition of formulation quality

In compounding, material quality cannot be defined solely by a COA or standard parameters.

Defining the specification must take into account:

  • Quality of dispersion;
  • Color stability (ΔE);
  • MI / MFI window;
  • Critical contaminants;
  • Production stability;
  • Repeatability of performance.

How Free Flow provides support

We collaborate with R&D and production to define Quality-by-Design approaches aimed at:

  • Control of variability;
  • Greater formulation repeatability;
  • Industrial stability;
  • Reduction of non-conformities;
  • Optimization of the actual quality of the compound.

The goal is to increase reliability and production continuity, even when dealing with complex recycled materials.

Contact us

Do you have a formulation requirement or a process-related issue?

Let’s discuss and analyze materials, the process, and application requirements to jointly identify the most suitable solution for developing your compound.