POROUS ANIMAL FIBER, PROCESS FOR MAKING THE SAME AND COTTON, MIXED FIBER, COMPOSITE FIBER, AND FABRIC

PROBLEM TO BE SOLVED: To achieve the improvement of color developing property, heat insulating property, warmth-keeping property, moisture absorption and releasing characteristics, heat-generating property on moisture absorption, quick drying property, dry feeling, swelling feeling, etc., and reducing weight of the of animal fiber by forming a multiple number of fine pores on the animal fiber such as wool. SOLUTION: The porous protein fiber is produced through an acid-treating process, a compressing process and a pressure-releasing process. In the acid-treating process, the animal fiber is brought into contact with the acid to produce an acid-treated animal fiber. In the compressing process, the acid-treated animal fiber which is in a state wet with the acidic solution, is put into a prescribed pressure-resistant container and then inert gas is injected into the pressure resistant container to pressurize the inside of the container up to a prescribed pressure. In the pressure-releasing process, pressurization is released. COPYRIGHT: (C)2010,JPO&INPIT