Overview
ACI Compounding Solutions is a global compounder headquartered in Guarda, Portugal, specializing in the production of high-performance polymer compounds. Founded in 2011, ACI has established itself as a significant player in the compounds industry, with a diverse portfolio including polyvinyl chloride (PVC), polyolefins, silicone, and thermoplastic rubber compounds. The company recently became part of Westlake Corporation through an acquisition completed in 2025, strengthening Westlake’s global compounds portfolio.
Operations
ACI operates four strategically located production facilities across Mexico, Portugal, Romania, and Tunisia, enabling the company to serve customers globally with customized compound solutions. The company specializes in toll compounding services, developing tailored formulations to meet specific customer requirements across various industries.
Strategic Focus
As part of the Westlake Group, ACI continues to expand its capabilities in sustainable and bio-based compound formulations, supporting the growing demand for environmentally responsible material solutions in packaging, automotive, and industrial applications.
Primary Materials
Polyvinyl chloride (PVC), Polyolefins, Silicone, Thermoplastic rubber, Bio-based compounds
Market Segments
Packaging, Automotive, Electrical & Electronics, Industrial Applications, Wire & Cable Manufacturing, Consumer Products
Production Facilities
- Mexico - Compounds for multiple applications
- Portugal - Headquarters and manufacturing
- Romania - Regional production hub
- Tunisia - Production facility
Last updated: February 13, 2026 Information sourced from Westlake Corporation acquisition announcement (January 2025)