Production method of biodegradable thermally bonded two-component composite filament fiber

Abstract

The invention relates to a bio-degradable heat-viscose bi-component filament fiber, which comprises a surface fiber layer and is characterized in that a plurality of core-layer fibers are arranged at the center of the surface fiber layer. The invention further relates to a production method of the bio-degradable heat-viscose bi-component filament fiber, which is characterized by including the following processes of (1) drying poly butylenes succinate and polylactic acid in a vacuum environment; (2) melting and extruding the poly butylenes succinate and the polylactic acid in two screws of a double-screw composite spinning machine, feeding the same into a composite spinning component after being metered by a metering pump, spraying from a composite spinneret plate, cooling to the room temperature, and reeling to form reeled filaments after applying spinning oil; and (3) drafting after balancing the reeled filaments at the room temperature, and accordingly obtaining the bi-component composite filament fiber. The bio-degradable heat-viscose fibers produced by the production method are fine in viscosity, high in strength and better in flexibility and have excellent bio-degradation and absorbability for human bodies.

Description

technical field

[0001] The invention relates to a production method of a biodegradable heat-adhesive two-component composite filament fiber, which belongs to the field of fiber technology. Background technique

[0002] Thermal bonding fiber is a type of special fiber widely used at present, which can replace chemical adhesives and play a role in bonding. Compared with chemical adhesives, thermal bonding fibers are more environmentally friendly and easier to use. However, conventional thermal bonding fibers mostly use non-biodegradable materials, such as PP, PE, COPET (copolyester), COPA (copolyamide), etc. These materials decompose slowly in nature after use, and are not real Eco-friendly material. There are also related patents and reports that use degradable materials to produce related thermal bonding fibers, but many additives are added during use, which affects the spinnability of the materials. The process is complicated and mainly produces short fibers. In addition, ...

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