Production method of double-component spinneret outside composite parallel self-crimping elastic short fiber

A production method and composite fiber technology, applied in fiber processing, filament/thread forming, stretch spinning, etc., can solve the problems of easy generation of static electricity, single use, poor hand feeling, etc., and achieve permanent three-dimensional crimping and excellent crimping performance. , good elasticity

Active Publication Date: 2016-11-23
王家铭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, filament-type side-by-side elastic fibers are generally only used as single-component yarns in the weaving industry, and have a single purpose, and as chemical fiber side-by-side composite fibers, they also have shortcomings such as easy to generate static electricity, poor hand feeling, and non-hygroscopic.

Method used

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  • Production method of double-component spinneret outside composite parallel self-crimping elastic short fiber
  • Production method of double-component spinneret outside composite parallel self-crimping elastic short fiber
  • Production method of double-component spinneret outside composite parallel self-crimping elastic short fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for producing two-component spinneret composite side-by-side self-crimping elastic short fibers, using PET with an intrinsic viscosity of 0.448dl / g as fiber component A, and PTT with an intrinsic viscosity of 0.93dl / g as fiber component B , the mass ratio of the fiber component A to the fiber component B is 50:50, specifically comprising the steps of:

[0042] (1) Dry the slices of fiber component A at 150°C for 8 hours, and then melt and extrude at 270°C to obtain a melt. After filtering through a filter, the filtered melt is passed through a static mixer and then transported to the composite After the spinning box is metered by the metering pump, it is sent into the parallel compound component for parallel compound distribution;

[0043] At the same time, the 0.93dl / L chips of fiber component B were first viscosified at 180°C for 45 hours to obtain viscosified chips with a viscosity of 1.35dl / L, dried at 140°C for 4 hours during fiber production, and then mel...

Embodiment 2

[0052] A method for producing two-component spinneret composite side-by-side self-crimping elastic short fibers, using PET with an intrinsic viscosity of 0.52dl / g as fiber component A, and PBT with an intrinsic viscosity of 0.78dl / g as fiber component B , the mass ratio of the fiber component A to the fiber component B is 50:50, specifically comprising the steps of:

[0053] (1) Dry the slices of fiber component A at 130°C for 12 hours, and then melt and extrude at 280°C to obtain a melt. After filtering through a filter, the filtered melt is conveyed to the composite After the spinning box is metered by the metering pump, it is sent into the parallel compound component for parallel compound distribution;

[0054] At the same time, the slices of fiber component B were first viscosified at 210°C for 25 hours to obtain 1.51dl / g viscosified slices, then dried at 140°C for 3 hours, and then melted and extruded at 280°C to obtain a melt, which was filtered through a filter Finally...

Embodiment 3

[0064] A method for producing two-component spinneret composite side-by-side self-crimping elastic short fibers, using PET with an intrinsic viscosity of 0.55dl / g as fiber component A, and HSPBT with an intrinsic viscosity of 0.78dl / g as fiber component B , the mass ratio of the fiber component A to the fiber component B is 50:50, specifically comprising the steps of:

[0065] (1) Dry the slices of fiber component A at 150°C for 8 hours, and then melt and extrude at 280°C to obtain a melt. After filtering through a filter, transfer the filtered melt to a composite After the spinning box is metered by the metering pump, it is sent into the parallel compound component for parallel compound distribution;

[0066] At the same time, the chips of fiber component B were dried at 135°C for 12 hours, and then melted and extruded at 290°C to obtain a melt. After filtering through a filter, the filtered melt was sent to a composite spinning box through a static mixer After being metered...

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Abstract

The invention relates to a production method of double-component spinneret outside composite parallel self-crimping elastic short fiber. The production method includes: adopting high molecular polymer components A and B different in shrinkage characteristics as raw materials; subjecting AB melt to outside compositing through a double-passage spinneret to obtain an AB parallel composite filament bundle; subjecting the AB parallel composite filament bundle sequentially to air-blowing cooling, oiling, winding traction and filament carrying to obtain AB parallel composite fiber protofilament; subjecting the AB parallel composite fiber protofilament sequentially to inter-cluster balance, drafting, thermal setting, oiling, crimping, loosening and drying and cutting to obtain the double-component spinneret outside composite parallel self-crimping elastic fiber. The fiber has excellent and lasting crimping performance, is high in elasticity, elastic recovery rate and spinnability, wide in application range and suitable for nonwoven filling.

Description

technical field [0001] The invention belongs to the technical field of novel short fiber production, and in particular relates to a method for producing self-crimping elastic short fiber compounded side by side outside a two-component spinneret. Background technique [0002] Composite fiber is a new type of chemical fiber developed in the 1960s in the world, and the composite fiber of two components is also called bicomponent fiber. It is to transport two kinds of fiber-forming high polymer melts with different components, proportions, viscosities, etc. to the same spinning assembly, meet at the appropriate part of the assembly, and spray out from the same spinneret hole to form a fiber. According to the positional relationship of the two components in the fiber section, it can be divided into side-by-side type, skin-core type, sea-island type and so on. [0003] Side-by-side composite fiber is a composite fiber variety in which two components exist side by side and only pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/14D01D5/22D01D5/32D01D10/02D01F8/14
CPCD01D5/14D01D5/22D01D5/32D01D10/02D01F8/14
Inventor 王家铭
Owner 王家铭
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