Method for manufacturing formable thermoplastic laminates

US7524447B2 · kind B2 · utility

Assignee

• Sabic Innovative Plastics B.V. · NL

Inventors

• Himanshu Asthana · Evansville, US
• M. Davis · Greenwood, US
• Hari K. Harikumar · Bengaluru, IN
• Martin Lindway · Waxhaw, US
• Aniruddha Moitra · Sherghati, IN
• Chetan J. Parikh · Newburgh, US
• Om Prakash · Kanchinakote, IN
• Michael T. Roland · Evansville, US
• Robert A. Schiff · Humble, US
• Robert W. Walker · Greenwood, US
• Georgios S. Zafiris · Glastonbury, US

Key dates

• Filing date: Jul 20, 2004
• Grant date: Apr 28, 2009
• Expiry date: Oct 23, 2026

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29K2995/0073
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

One method for making a laminate material comprising a first surface layer comprising resorcinol arylate polyester chain members and a second surface layer suitable for bonding to a substrate, comprises co-extruding a polymeric first surface layer material and a polymeric second surface layer material through a die and into the first nip of a calender roll stack comprising a first surface roll and a second surface roll that define the first nip, to form the laminate material. A nip load in the first nip of greater than or equal to about 400 N/cm can be applied to the laminate, and the laminate material can be collected from the roll stack. The first roll and the second roll can each have a surface smoothness of less than or equal to about 5 micrometers and temperatures of about 40° C. to about 150° C.