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A kind of low-melting point polyester sheath-core composite colored fiber and its production method

A technology of low-melting polyester and colored fibers is applied in the direction of conjugated synthetic polymer rayon, adding dyes in spinning solutions, etc., and can solve the problems of high production cost, high investment and production cost, complicated process operation, etc. Achieve high color fastness, good melt fluidity and simple process

Active Publication Date: 2014-10-29
厦门翔鹭化纤股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the skin-core structure composite colored fiber is usually colored from the leather part, which is mainly realized by dyeing after weaving, which has great environmental pollution, high production cost, and poor color fastness of the product; the other is to add color masterbatch It is mixed with the polyester on the leather and melt-spun. The specific method is that the color masterbatch passes through a separate drying system, and is added through a syringe and mixed with ordinary slices, and finally the melt-spun finished product
Its investment and production costs are high, the process operation is complicated, the control is difficult, the physical and chemical properties of the product are poor in uniformity, its color fastness is average, and the performance requirements of the dyes used in the masterbatch are relatively high.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of low-melting point polyester sheath-core composite colored fiber and its production method
  • A kind of low-melting point polyester sheath-core composite colored fiber and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Preparation of color masterbatch: Accurately weigh fiber-grade PBT, bottle-grade PET, polyethylene wax and Fulis red GA according to the following weight parts, add them to the mixer and mix them evenly, and then melt them with a twin-screw extruder Blending, the temperature of the extruder is controlled at 265~275°C, and then granulated to obtain the masterbatch; among them:

[0040] 78 parts by weight of fiber grade PBT;

[0041] 12 parts by weight of bottle-grade PET;

[0042] 6 parts by weight of polyethylene wax;

[0043] Fu Lisi red GA 4 parts by weight;

[0044] The numerical deviation between the bulk density of the color masterbatch and the bulk density of fiber-grade PET (0.75~0.92kg / L) is less than or equal to 5%;

[0045] (2) Prepare the core material: Accurately weigh the fiber-grade PET and the above-mentioned color masterbatch according to the weight ratio of 91:9, feed the fiber-grade PET and the color masterbatch into the static mixing tank at th...

Embodiment 2

[0049] (1) Preparation of color masterbatch: Accurately weigh fiber-grade PBT, bottle-grade PET, ethylene oxide wax and Papilion Yellow S-4G according to the following weight parts, add them to the mixer and mix them evenly, and then melt them with a twin-screw extruder Blending, the temperature of the extruder is controlled at 265~275°C, and then granulated to obtain the masterbatch; among them:

[0050] 71 parts by weight of fiber grade PBT;

[0051] 12 parts by weight of bottle-grade PET;

[0052] 8 parts by weight of ethylene oxide wax;

[0053] Papilion yellow S-4G 9 parts by weight;

[0054] The numerical deviation between the bulk density of the color masterbatch and the bulk density of fiber-grade PET (0.75~0.92kg / L) is less than or equal to 5%;

[0055] (2) Preparation of core material: Accurately weigh fiber-grade PET and the above-mentioned color masterbatch according to the weight ratio of 98:2, feed fiber-grade PET and color masterbatch into the static mixing t...

Embodiment 3

[0059](1) Preparation of color masterbatch: Accurately weigh fiber-grade PBT, bottle-grade PET, ethylene oxide wax and Fulis Brown TBY according to the following weight parts, add them to the mixer and mix them evenly, and then melt them with a twin-screw extruder Blending, the temperature of the extruder is controlled at 265~275°C, and then granulated to obtain the masterbatch; among them:

[0060] 66 parts by weight of fiber grade PBT;

[0061] 5 parts by weight of bottle-grade PET;

[0062] 15 parts by weight of ethylene oxide wax;

[0063] Fulisi Brown TBY 14 parts by weight;

[0064] The numerical deviation between the bulk density of the color masterbatch and the bulk density of fiber-grade PET (0.75~0.92kg / L) is less than or equal to 5%;

[0065] (2) Prepare the core material: Accurately weigh the fiber-grade PET and the above-mentioned color masterbatch according to the weight ratio of 95:5, feed the fiber-grade PET and the color masterbatch into the static mixing t...

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Abstract

The invention discloses a low-melting-point polyester skin core composite colored fiber and a production method thereof. The fiber provided by the invention comprises a core material and a skin material; the core material comprises a fiber-grade PET and color master batch; the skin material comprises low-melting-point polyester; the color master batch comprises the following components, by weight: 65-80 parts of fiber-grade PBT, 5-20 parts of bottle-grade PET, 5-15 parts of a dispersing agent and 3-15 parts of a toner. The invention uses fiber-grade PBT as a color master batch, which is supplemented with bottle-grade PET as a carrier; and compared with fiber-grade PET, the bottle-grade PET has better melt liquidity at the same temperature, and increases the mixing effect between the two and improves spinning performance. According to the invention, the core part is colored, and the surface is covered with transparent low-melt-point polyester; and the prepared composite fiber with skin core structure has advantages of high color fastness and no color fading in usage. The method provided by the invention has simple process, and is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of chemical fiber processing, in particular to a polyester sheath-core composite colored fiber with high color fastness and low melting point and a production method thereof. Background technique [0002] Low-melting point polyester sheath-core composite fiber is a kind of hot-melt fiber. Generally, its core component is ordinary fiber-grade polyester polyester (PET), and its sheath is a low-melting point copolyester with a melting point of 95~150°C. It is mainly used in non-woven fabrics. Cloth fabrics such as carpets, decorations, non-glued cotton, etc., have good physical processing properties and environmental protection effects. [0003] At present, the skin-core structure composite colored fiber is usually colored from the leather part, which is mainly realized by dyeing after weaving, which has great environmental pollution, high production cost, and poor color fastness of the product; the other is to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F1/06
Inventor 刘龙敏赵铁侠郑铮刘志麟
Owner 厦门翔鹭化纤股份有限公司
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