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Eccentric sheath-core type colored fiber, preparation method and preparation device thereof
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A colored fiber and sheath-core technology, applied in fiber processing, filament/thread forming, textiles and papermaking, etc., can solve the problem of single color rendering effect, achieve good uniformity, rich color levels, and short processing flow Effect
Pending Publication Date: 2020-04-28
CHINESE TEXTILE ACAD
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However, this colored fiber usually has the characteristics of a single color rendering effect
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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preparation example Construction
[0061] Preparation method of eccentric sheath-core colored fiber
[0062] See attached Figure 5 , the preparation method of the eccentric sheath-core type colored fiber provided by the invention comprises the following steps:
[0063] preparing a core melt containing a first colorant;
[0064] preparing a skin melt containing a second colorant;
[0065] Select a spinneret comprising the first spinneret hole and the second spinneret hole, wherein the aperture of the first spinneret hole is smaller than the aperture of the second spinneret hole, and the first spinneret hole deviates from the second spinneret hole Geometric center setting;
[0066] Under the set temperature conditions, while the core layer melt flows through the first spinneret hole, the skin layer melt flows through the core layer melt, at the exit of the first spinneret hole and the exit of the second spinneret hole forming a first intermediate product;
[0081] Core layer: polyethylene terephthalate, the colorant is masterbatch containing yellow pigment, the total content of yellow pigment is 0.6%
[0082] The cross-sectional shape and arrangement of spinneret holes are as attached figure 1 shown.
[0083] The diameter of the skin layer is twice the diameter of the core layer, the outer edge of the skin layer and the core layer overlap, the proportion of the core layer is 25%, the fiber specification is 160D / 72f, and the spinning temperature is 275-295°C.
[0084] The cross-section of the fiber is round, and the overall appearance is orange-red, but mixed with yellow and red.
[0086] Cortex: polycaprolactam, the colorant is a masterbatch containing blue pigments, the total content of blue pigments, 1.2%
[0087] Core layer: polycaprolactam, the colorant is masterbatch containing yellow pigment, the total content of yellow pigment is 1.6%
[0088] The cross-sectional shape and arrangement of spinneret holes are as attached figure 2 shown.
[0089] The diameter of the semicircle arc of the cortex is 1.5 times the diameter of the spinneret hole of the core layer, the proportion of the core layer is 19.5%, the fiber specification is 100D / 24f, and the spinning temperature is 255-275°C.
[0090] The cross-section of the fiber is elliptical, and the overall appearance is blue mixed with yellow, and has a green tint at the same time.
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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Abstract
The invention discloses an eccentric sheath-core type coloredfiber, a preparation method and a preparation device thereof, and belongs to the technical field of chemical fibers. The coloredfiber comprises a sheath layer and a core layer, wherein the sheath layer is coated on the periphery of the core layer, wherein the core layer is deviated from the geometric center of the sheath layer when thecore layer is observed from the cross section of the eccentric sheath-core type coloredfiber; and the colors of the core layer and the sheath layer are different. The method comprises the steps thata core layer melt containing a first colorant and a sheath melt containing a second colorant are prepared; a spinneret plate comprising a first spinneret hole and a second spinneret hole is selected;under a set temperature condition, the core layer melt flows through the first spinneret hole, the sheath layer melt flows through the core layer melt, and a first intermediate product is formed at the outlet of the first spinneret hole and the outlet of the second spinneret hole; and after post-treatment is performed, the filament or short fiber of the eccentric sheath-core type colored fiber isobtained. The device comprises the spinneret plate. The eccentric sheath-core type colored fiber prepared by the preparation method and the preparation device can enable the core layer to be eccentrically distributed in the sheath layer.
Description
technical field [0001] The invention relates to the technical field of chemical fibers, in particular to an eccentric sheath-core colored fiber, a preparation method and a preparation device thereof. Background technique [0002] In the prior art, except for a few fibers such as para-aramid fiber and polyphenylene sulfide, which have their own color, most of the colored fibers are made by adding coloring agents such as masterbatch and color oil during the spinning process. The fibers obtained by spinning are also commonly called dope dyed fibers. Usually, the method to achieve multi-color color mixing effect on one yarn is to use a variety of different color fibers for blending or doubling, among which staple fibers are mainly blended, and there are various color mixing methods such as fiber blending and strip blending. With doubling, twisting or texturing as the main production method, the final textile product can reflect the mixed color effect with rich color levels. Ho...
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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