The preparation methods for insulating sleeving vary depending on the specific materials and performance requirements involved. Insulating sleeving based on a fiberglass substrate is a common type; its typical manufacturing process involves weaving fiberglass to form the sleeving base, followed by the application of various resin coatings and subsequent curing.
Silicone-coated fiberglass sleeving is produced by weaving fiberglass into a tubular structure at high temperatures and then applying a silicone resin coating. This results in Class H insulating sleeving, characterized by excellent dielectric properties, self-extinguishing capabilities, flexibility, and elasticity. Polyurethane-coated fiberglass sleeving is manufactured by coating woven fiberglass sleeving with polyurethane resin and then subjecting it to thermal curing; this yields Class F insulating sleeving, which offers reliable heat resistance, dielectric strength, and resistance to benzene and oil. Polyester-coated fiberglass sleeving is produced by weaving polyester fibers and applying a specialized polyester varnish, resulting in a product that exhibits excellent dielectric properties, tensile strength, flexibility, and elasticity.
Furthermore, there are composite manufacturing processes designed to meet specialized requirements-such as aluminum heat-reflective fiberglass sleeving. Through a specialized process, this product laminates an aluminized metal thermal shielding layer onto a tightly woven layer of fiberglass yarn, creating a nearly seamless structure capable of reflecting over 95% of radiant heat.
