Method for preparing hollow hot melt nonwoven cloth force fit plate of polypropylene
A non-woven and polypropylene technology, which is applied in the field of preparation of polypropylene hollow hot-melt non-woven laminates, can solve the problems of poor product quality stability, complex preparation methods, and low degree of automation, and achieve stable product quality and reduce The effect of high production cost and high degree of mechanization
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Embodiment 1
[0020] Embodiment 1: The preparation method of a kind of polypropylene hollow hot-melt non-woven laminated board of the present invention adopts the following process steps:
[0021] a. Feeding: feed PP polypropylene granular raw materials into the hopper;
[0022] b. Melt extrusion: The material entering the hopper enters the melting section of the screw extruder with a screw diameter of 125mm through gravity, and depends on the transmission force of the screw rotation, the material enters the metering section and the extrusion section of the screw extruder in turn, And the temperature of the melting section, metering section and extrusion section of the screw extruder is controlled at 180°C, and the speed of the screw extruder is controlled at 30r / min, and the material delivery pressure is set at 10MPa;
[0023] c. Mold extrusion: the molten material is extruded by a screw extruder and formed by a mold;
[0024] d. Cooling and sizing forming: the basically formed material f...
Embodiment 2
[0031] Embodiment 2: The preparation method of a kind of polypropylene hollow hot-melt non-woven laminated board of the present invention adopts the following process steps:
[0032] a. Feeding: feed the raw material of polypropylene granules into the hopper;
[0033] b. Melt extrusion: The material entering the hopper enters the melting section of the screw extruder with a screw diameter of 125mm through gravity, and depends on the transmission force of the screw rotation, the material enters the metering section and the extrusion section of the screw extruder in turn, And the temperature of the melting section, metering section and extrusion section of the screw is controlled at 210°C, and the speed of the screw extruder is controlled at 60r / min, and the material delivery pressure is set at 20MPa;
[0034] c. Mold extrusion: the molten material is extruded by a screw extruder and formed by a mold;
[0035] d. Cooling and sizing molding: The basically formed material flowing...
Embodiment 3
[0042] Embodiment 3: The preparation method of a polypropylene hollow hot-melt non-woven laminated board of the present invention adopts the following process steps:
[0043] a. Feeding: feed the raw material of polypropylene granules into the hopper;
[0044] b. Melt extrusion: The material entering the hopper enters the melting section of the screw extruder with a screw diameter of 125mm through gravity, and depends on the transmission force of the screw rotation, the material enters the metering section and the extrusion section of the screw extruder in turn, And the temperature of the melting section, metering section and extrusion section of the screw extruder is controlled at 190°C, and the speed of the screw extruder is controlled at 40r / min, and the material delivery pressure is set at 15MPa;
[0045] c. Mold extrusion: the molten material is extruded by a screw and molded by a mold;
[0046] d. Cooling and sizing forming: the basically formed material flowing out of th...
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