Form This specification covers one type of glass cloth impregnated with a heat-reactive@ thermosetting@ hot-melt@ addiction-type@ polyimide resin system furnished in continuous rolls of full width material Application This cloth has been used typically for structural laminates requiring high strength and heat resistance for long-term service up to 230??(446 ?? and short-time service up to 260??(500 ??@ but usage is not limited to such applications Safety - Hazardous Materials While the materials@ method@ applications@ and processes described or referenced in this specification may involve the use of hazardous materials@ this specification does not address the hazards which may be involved in such use It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved