Melting pushing out the high intensity fiber and its production mannered null poly

摘要

As for topic of this invention, regardless of the molecular weight and polymer constitution etc of PHA which differ depending upon, the origin such as protoroph production ones, gene recombination stocks production ones or chemosynthesis ones of the PHA production microbes, simply high intensity high intensity it is obtained by method and the said method where you can obtain the fiber it is to offer the fiber. With this invention, melting pushing out poly- hydroxy alkane acid, it produces the melted extrusion fiber, Glass transition point temperature of poly- hydroxy alkane acid +15C below making cool suddenly and making the said melted extrusion fiber solidify, it produces the fiber of the amorphous, Glass transition point temperature +15C leaving the fiber of the said amorphous below, it produces the crystallization fiber, The said crystallization fiber stretching is done, furthermore production method of the fiber which features that tension heat treatment is done is offered.