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.

“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.”compositesworld.com

• 2 sources
• compositesworld.comTri-Mack to Join Trelleborg Group | CompositesWorldNov 3, 2026
• composights.comTrelleborg Group to Acquire Tri-Mack, Expanding Thermoplastic Composites Capabilities — ComposightsNov 4, 2026

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