AROMATIC POLYAMIDE FILM FOR THE PRODUCTION OF AROMATIC POLYAMIDE SHORT FIBERS AND METHOD AND APPARATUS FOR PRODUCING THE SAME

摘要

A polyamide film is produced by dissolving an aromatic diamine and an aromatic diacid chloride in the amide solvent to produce a liquid crystal prepolymer by the prepolymn. reaction at low temp., dispersing the prepolymer to the inductive material, orientating a molecule of the prepolymer by the concavo-convex type roller, dipping the orientated prepolymer in the polymn.-promoting agent, and cleaning, drying and continuously winding it. The appts. comprises the concavo-convex roller of at least 20cm diameter and at most 0.5mm depth. The film for an aromatic single fiber has a high degree of orientation and crystallization.