DuPont™ Pyralux® FR products are acrylic-based flame retardant copper clad laminates, coverlays, bonpdplys and sheet adhesives for products requiring UL rating.
Pyralux® FR acrylic based laminates are made with DuPont™ Kapton® polyimide film and are available in sheet form as single or double-sided clads in a wide variety of thicknesses. Pyralux® laminated composites are typically used to produce high reliability, high density circuitry of flexible, rigid-flex, and all-flexible multilayer constructions.
Construction and Certification for Laminate:
DuPont™ Pyralux® FR coverlay (bondply) composites are constructed of DuPont™ Kapton® polyimide film, coated on one side (both sides) with a proprietary B-staged acrylic adhesive. They are used to encapsulate etched details in flexible and rigid-flex multilayer constructions.
Construction and Certification for Coverlay and Bondply:
DuPont™ Pyralux® FR sheet adhesive is a proprietary B-staged modified acrylic adhesive coated on release paper. Sheet adhesive is used primarily to bond flexible innerlayers or rigid cap layers in multilayer lamination. It is also widely used to bond flexible circuits to rigid boards during the fabrication of rigid-flex circuits, as well as to bond stiffeners and heat sinks.
Construction and Certification for Sheet Adhesive: