Color polylactic acid fiber and color polylactic acid fiber regulating device for preparing smoke filter rod
A technology of polylactic acid fibers and adjustment devices, which can be used in the preparation and application of e-liquid filter elements, spinning solutions, etc., and can solve the problems of poor stability of lycopene
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[0052] The invention provides a method for preparing colored polylactic acid fibers. The prepared tow is a safe, environmentally friendly and completely degradable green product with specific color and anti-counterfeiting properties (can be faded by light). The fiber contains natural Food coloring can be directly used to produce cigarette filter rods, and can also be used as a colored functional center line to produce functional center line tobacco filter rods. The filtration and adsorption effect of harmful substances in the air and the sensory quality of cigarettes are further improved, which can meet the requirements of cigarette use and provide a new choice for the diversification, functionalization and differentiation of tobacco filter materials.
[0053] Take a series of colored polylactic acid fibers from golden yellow → true yellow → lemon yellow → light yellow as an example.
Embodiment 1
[0055] Put the polylactic acid resin into a vacuum oven, and dry it at 70°C for 24 hours, so that the moisture content of the raw material is lower than 80PPM, and then take it out. The natural pigment is lycopene. According to the weight ratio, the ratio of lycopene:polylactic acid=0.8:99.2 After mixing, put it into the screw extruder, set the temperature of the screw feed area to 170°C, and the temperature of other areas (including other areas of the screw, filters, conveying pipes and spinning boxes, etc.) Silk can produce figure 1 The golden yellow polylactic acid fiber shown; keep the temperature of the feeding section at 170°C, and the temperature of other areas rises to 240°C, and can produce image 3 Polylactic acid fiber shown faded in color to golden yellow. In the post-processing process, according to the staple fiber production process, the golden yellow polylactic acid fiber can be prepared through the processes of drawing, crimping, drying and setting, laying, a...
Embodiment 2
[0057] Select the natural pigment as a mixture of lycopene and lutein. According to the weight ratio, the ratio of lycopene: lutein: polylactic acid = 0.5: 1.0: 98.5, add it to a vacuum drum dryer, dry and mix at 80 ° C for 12 hours, After the moisture content of the raw material is lower than 100PPM, it is added to the screw extruder, and the temperature of the screw feeding zone is set to 155°C in a gradually increasing manner. silk box, etc.) at a temperature of 215°C, which can be produced by metered spinning figure 2 The golden yellow polylactic acid fiber shown; keep the temperature of the feeding section at 155°C, and the temperature of other areas rises to 245°C, and can produce Figure 4 Polylactic acid fiber shown faded in color to golden yellow. In the post-processing process, according to the staple fiber production process, the golden yellow polylactic acid fiber can be prepared through the processes of drawing, crimping, drying and setting, laying, and packagin...
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