Abstract: The present invention provides a processing method for producing synthetic fiber and vegetable fiber, by which it is possible to add soft feeling of silk to synthetic fiber and vegetable fiber and a new type of fiber can be produced, which is provided with the advantages of both synthetic fiber or vegetable fiber and silk and can be used as the fiber for clothings and also as industrial materials.

Abstract: This invention relates to a process for producing permanently waved wool and animal hair. In addition to providing a process for waving wool and animal hair, the process of the present invention improves the elasticity of these natural fibers. Yarns with better elasticity and expansibility and with sufficient swelling property can be obtained after spinning.When woven or knitted, a produce with a lower specific weight with better elasticity and expansibility and with better anti-shrinking and anti-inflammatory properties cna be obtained.

Abstract: This invention relates to a process for producing a curl shrunk silk yarn. One of the features of the invention is to absorb collagen derived protein into raw silk material after sericin is removed therefrom. Thereafter, silk fibers are twisted in a S- or Z-direction and then saturated with moisture. Another feature of the invention is to maintain the moisture saturated silk fibers at prescribed temperature and under prescribed pressure for a given time. Thereafter, the fibers are untwisted in the reverse direction and given a curl shrinkage characteristic under the circumstance of saturated vapor.