Flame resistant, self-wrapping textile sleeve and method of construction thereof

A method of constructing a flame resistant, wrappable textile sleeve for providing thermal protection to an elongate member contained therein, comprising:

• interlacing yarn including heat-resistant yarn to form an inner wall having an inner surface and an outer surface bounded by opposite inner edges extending lengthwise between opposite inner ends;
• providing an outer wall of mica-based material having an inner surface and an outer surface bounded by opposite outer edges extending lengthwise between opposite outer ends;
• fixing the inner surface of the outer wall to the outer surface of the inner wall with one of the outer edges of the outer wall extending beyond one of the inner edges of the inner wall to provide a flap of the outer wall;
• and
• providing the flap with an adhesive layer for selective adhesion to the outer surface of the outer wall;
• and
• heat-forming some of the interlaced yarn to impart a bias on the inner wall to bring the inner edges into overlapping relation with one another.

A flame resistant, wrappable textile sleeve for providing thermal protection to an elongate member contained therein, comprising:

• an inner wall of interlaced yarn including heat-resistant yarn, said inner wall having opposite inner edges extending lengthwise in generally parallel relation with a longitudinal axis between opposite inner ends, and having an outer surface and an inner surface bounded by said inner edges and said inner ends;
• an outer wall of mica-based material having an inner surface and an outer surface bounded by opposite outer edges extending lengthwise in generally parallel relation with said longitudinal axis between opposite outer ends, said inner surface of said outer wall fixed to said outer surface of said inner wall;
• and
• wherein said interlaced yarn includes heat-formed yarn, said heat-formed yarn imparting a bias on said inner wall to bring said inner edges into overlapping relation with one another.