Production of high performance thermoplastic composites

US10449694B2 · kind B2 · utility

Assignee

• Teknologian tutkimuskeskus VTT Oy · FI

Inventors

• Antti Ojala · Ludwigshafen, DE
• Kalle Nättinen · Sääksniemi, FI
• Lisa Wikström · Ayacucho, PE
• Hannu Minkkinen · Espoo, FI
• Petri Jetsu · Espoo, FI
• Jani Lehmonen · Jyväskylä, FI
• Karita Kinnunen · Espoo, FI
• Tuomo Hjelt · Espoo, FI

Key dates

• Filing date: Oct 9, 2014
• Grant date: Oct 22, 2019
• Expiry date: Apr 26, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2201/026
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The present invention concerns a process for producing a thermoformable porous web using a mixture of cellulosic fibers and one or more thermoplastic materials, particularly by foam forming said mixture into a composite foam, and applying the foam into one or more layers on a support to obtain a porous pre-form web. The thus produced porous composite web can be further processed by compression molding to give a rigid high-strength composite structure, which is suitable for use in producing, e.g. panels or plates, packages or hygiene products, insulators or filters, or printed intelligence, electronics or microcellulose products.