# Trelleborg Group to acquire Tri-Mack Plastics Manufacturing

Tri-Mack Plastics Manufacturing Corp., a Rhode Island-based specialist in thermoplastic and thermoplastic composite solutions for aerospace and defense, signed an agreement on October 21, 2026 to be acquired by Trelleborg Group through its Trelleborg Sealing Solutions business area and Global Aerospace unit.

- Type: Acquisition
- Announced: 2026-10-21
- Where: Bristol, Rhode Island, United States
- Status: announced
- Products: precision engineered thermoplastic components, thermoplastic composite solutions
- Sectors: [Aerospace Components](https://endata.com/sectors/aerospace-components.md), [Industrial Machinery](https://endata.com/sectors/industrial-machinery.md)

## Companies

- [Trelleborg](https://endata.com/companies/1933.md) (acquirer)
- [Tri-Mack Plastics Manufacturing Corp.](https://endata.com/companies/15352.md) (target)
- [Tri-Mack](https://endata.com/companies/15632.md) (target)

## Sources

- [compositesworld.com](https://www.compositesworld.com/news/tri-mack-to-join-trelleborg-group), 2026-11-03: "When I think about the challenges my parents faced, starting out in an old sail loft while raising eight kids, it is remarkable that we are signing this agreement 52 years later."
- [composights.com](https://www.composights.com/composites-industry-news/trelleborg-group-to-acquire-tri-mack-expanding-thermoplastic-composites-capabili), 2026-11-04: "Trelleborg Group has signed an agreement to acquire US-based Tri-Mack through its Trelleborg Sealing Solutions business area and Global Aerospace unit, with completion expected in early 2027."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.