抄録
A study of controlling the latent crimpability in the bicomponent polyethylene/polypropylene fibers has been made according to the information on the elastic and thermal shrinkages for each component of the fiber.
The low latent crimpability can be obtained by drawing at 100°C or higher and a drawing ratio of 3 or larger of the bicomponent fiber of which the flow rate ratio of the component polymers is larger than 3.
The results are explained in terms of the temperature effect which gives the different shrinkage to each of the two components, depending on the shape of the interface between them.
