Production process of ultra-soft bicomponent skin-core structure superfine fiber and superfine fiber of production process

Abstract

The invention provides a production process of an ultra-soft bicomponent skin-core structure superfine fiber. The production process comprises the following steps of extruding a component A material and then enabling an extruded material to enter a skin layer spinning channel of a composite spinning box; extruding a component B material and then enabling an extruded material to enter a core layerspinning channel of the composite spinning box; performing compounding by the composite spinning box and then spraying out tows by a spinning assembly; and winding, stretching, thermally setting, cutting and packaging the tows. The component B material in the spinning assembly flows into a spinneret orifice through a core layer outlet with a cross-shaped section and is converged with the componentA material to form a bicomponent material with a skin-core structure; the bicomponent material is sprayed out through a spinneret micropore with a cross-shaped section; and the direction of a cross-shaped blade of the core layer outlet is the same as that of a cross-shaped blade of the spinneret micropore. The invention provides a production method of the special-shaped skin-core structure superfine fiber, and the production method can improve the tension, the flexibility and the water absorption capacity of the fiber.

Description

Technical field [0001] The invention belongs to the technical field of textiles, and relates to a fiber production process, in particular to a super-soft two-component skin-core structure superfine fiber production process and its superfine fiber. Background technique [0002] ES fiber full name Ethylenes-Propylene Side By Side is a polyolefin sheath-core composite fiber, which uses polyester with a higher melting point as the fiber core layer and polyethylene with a lower melting point as the skin layer to cover the core layer. [0003] Chinese invention patent application [application number: 201810726506.9] a kind of colored polyester staple fiber with a core structure and a preparation method thereof belong to the technical field of colored polyester staple fiber, which solves the technical problem of the different shades of the surface of colored polyester staple fiber while reducing Less pollution to the environment, including 50-80wt% of the core layer and 10-20wt% of the sk...

AI Technical Summary

Problems solved by technology

[0004] In the skin-core structure in the above technical solution, both the skin layer and the core layer have a circular cross-section. Although this structure is convenient for production, the mechanical properties of the circular skin-core structure fibers and The water absorption performance is not ideal, and the flexibility is poor

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