Method of producing fiber and film of silk and silk-like material

Abstract

A method of manufacturing silk or silk-like fibers materials, wherein a solution wherein silk fibroins and/or silk-like materials are dissolved in hexafluoroacetone hydrate, is spun and extended if necessary, and a method of manufacturing a silk or silk-like film wherein a solution in which silk fibroins and/or silk-like materials are dissolved in hexafluoroacetone hydrate, developed, and extended after drying if necessary.

What is claimed is:  
     
         1 . A method of manufacturing silk or silk fibers spun from a solution in which silk fibroins and/or silk materials are dissolved in hexafluoroacetone hydrate or a solvent having this as its main component, and extending them if necessary.  
     
     
         2 . The method of manufacturing silk or silk fibers as defined in  claim 1 , wherein a film is manufactured from an aqueous solution wherein silk fibroins and/or silk materials are dissolved in lithium bromide, the lithium bromide is removed by dialysis, and the film is then dissolved in hexafluoroacetone hydrate or a solvent having this as its main component.  
     
     
         3 . A method of manufacturing silk or a silk film, wherein a solution in which silk fibroins and/or silk materials are dissolved in hexafluoroacetone hydrate or a solvent having this as its main component is developed on a support, and then extended after drying if necessary.