| abstract |
【Task】 Excellent light transmittance, mechanical properties, and chemical resistance, free of defects such as bubbles, and transparent useful as a transparent support for back-exposed photosensitive drums or as a member for electrophotographic image forming devices such as transfer and fixing To provide a polyimide composite tubular product and a method for easily producing this polyimide composite tubular product at low cost. [Solution] A tubular product comprising at least two polyimide resin coatings comprising an inner layer having high mechanical properties and an outer layer having high light transmittance, wherein the light transmittance of the coating is 50% or more at a wavelength of 550 nm, and a tensile strength of 15 kgf / Mm 2 or more, a transparent polyimide composite tubular product having a tensile modulus of 350 kgf / mm 2 or more, and a method for producing the same. [Selection] FIG. |