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

A composite filament and thermal bonding technology, which is applied in the fiber field, can solve problems such as complex process, unsatisfactory bonding effect, and affecting the spinnability of materials, so as to achieve good flexibility, good biodegradability, and ensure spinnability sexual effect

Active Publication Date: 2015-09-23
TEXTILE INST JIANGSU PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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, the composite process is used Thermally bonded fibers mostly use skin-core composite technology with a single-core structure. In actual use, the bonding effect is not ideal.

Method used

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

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Effect test

Embodiment 1

[0022] Embodiment one: a kind of production method of biodegradable thermal bonding two-component composite filament fiber, comprises the following process steps:

[0023] (1) Vacuum-dry polybutylene succinate at 40°C for 8 hours, and vacuum-dry polylactic acid at 90°C for 24 hours, with a vacuum degree of -0.1MPa;

[0024] (2) The vacuum-dried polybutylene succinate and polylactic acid are respectively melt-extruded in the two screws of the twin-screw compound spinning machine, and the screw extrusion of polybutylene succinate The temperature is 200°C, and the screw extrusion temperature of polylactic acid is 225°C; after being metered by a metering pump, it enters the composite spinning assembly together, and the volume ratio of polybutylene succinate and polylactic acid melt is 80:20, Sprayed through the composite spinneret, cooled to room temperature, coated with spinning oil, coiled at a speed of 800m / min to form coiled filaments;

[0025] (3) Stretch the winding yarn af...

Embodiment 2

[0026] Embodiment two: a kind of production method of biodegradable thermal bonding two-component composite filament fiber, comprises the following process steps:

[0027] (1) Vacuum-dry polybutylene succinate at 50°C for 4 hours, and vacuum-dry polylactic acid at 100°C for 12 hours, with a vacuum degree of -0.1MPa;

[0028] (2) The vacuum-dried polybutylene succinate and polylactic acid are respectively melt-extruded in the two screws of the twin-screw compound spinning machine, and the screw extrusion of polybutylene succinate The temperature is 200°C, and the screw extrusion temperature of polylactic acid is 225°C; after being metered by a metering pump, it enters the composite spinning assembly together, and the volume ratio of polybutylene succinate and polylactic acid melt is 40:60, Sprayed through the composite spinneret, cooled to room temperature, coated with spinning oil, coiled at a speed of 1000m / min to form coiled filaments;

[0029] (3) Stretch the winding yarn ...

Embodiment 3

[0030] Embodiment three: a kind of production method of biodegradable heat-adhesive two-component composite filament fiber, comprises the following process steps:

[0031] (1) Vacuum-dry polybutylene succinate at 50°C for 5 hours, and vacuum-dry polylactic acid at 95°C for 16 hours, with a vacuum degree of -0.1MPa;

[0032] (2) The vacuum-dried polybutylene succinate and polylactic acid are respectively melt-extruded in the two screws of the twin-screw compound spinning machine, and the screw extrusion of polybutylene succinate The temperature is 210°C, and the screw extrusion temperature of polylactic acid is 230°C; after being metered by a metering pump, it enters the composite spinning assembly together, and the volume ratio of polybutylene succinate and polylactic acid melt is 50:50, Sprayed through the composite spinneret, cooled to room temperature, coated with spinning oil, coiled at a speed of 1200m / min to form coiled filaments;

[0033] (3) Stretch the winding yarn a...

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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, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/34D01D5/08D01D5/12D01F8/14
Inventor 周仪周建平
Owner TEXTILE INST JIANGSU PROVINCE
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