How different Insulating Kraft Paper Sleeves -a spiral or convolute winding paper tube and vulcanized fiber tube?
spiral convolute winding kraft paper tube is made of Insulating Kraft Paper Sleeves after slitting, dipping in insulating resin, and curing by high-temperature spiral rolling.
Hardened fiber paper tube is 100% cotton pulp paper rolled under a pool of zinc chloride solution, then after 25 days of desulfurization, baking, pressing, and curing.
Kraft paper tubes have a short production cycle and a wide range of thicknesses and bores for customized tubes.
Hardened fiber tubes require corresponding molds for rolling and pressing molds, with complex production cycles and processes.
Kraft paper tubes have high-quality insulation properties and are used in motor bushings and transformer protection.
Hardened fiber tubes have insulating and arc quenching properties and are used in various motor bushings, electrical protection tubes, and fuse tubes. It is also suitable for many electrical and commercial applications because of its higher stiffness than kraft paper, phenolic paper, and phenolic cloth.