What are the heat shrinkable tube production technology of process

by:Mings     2020-07-18

heat shrinkable sleeve is made of high quality high polymer, the ratio of science, mechanical blending polymer, after molding, products by the electron accelerator radiation crosslinking, continuous expansion, product soft, flame retardant, shrinking fast, widely used copy in connectors, electrical appliances, electrical, end, wiring signs, lighting, office equipment, electrical equipment, communication equipment, resistor products such as insulation protection and metal corrosion, antirust processing, and antenna protection. Heat shrinkable tube production process specific as follows:

mixed granulation

according to the formula according to take all kinds of raw materials, with high speed mixer mixing evenly, a mixing capacity is 110 kg, stirring time 8 ~ 12 min. Mixed granulation of pelleting machine, cooling water tank, blow drying machine and cutting machine. Mixed granulation process parameters is: the host speed 1 000 ~ 1 400 r/min, feeder speed of 50 to 80 r/min, the body temperature of 110 ~ 160 ℃, the nose temperature 190 ~ 240 ℃.

extrusion moulding

extrusion molding by extrusion machine, cooling trough, tractor, tension and winding machine to complete. The process parameters for extrusion speed: 20 ~ 50 r/min, traction speed of 30 ~ 50 hz, extruder temperature 90 ~ 130 ℃.

radiation crosslinking

under the radiation crosslinked by electron accelerator and the beam transmission device. The role of electron accelerator is the ray, irradiation for plastic pipe material, make its produce crosslinking, is the role of beam under the transmission electron accelerator plastic tubing continuous into sent. After winding number to determine, by controlling the electron accelerator beam and beam under the transmission speed can be obtained to radiation dose.

expansion shape

will after radiation crosslinking of the plastic pipe heating to high elastic state, and then use expansion expansion machine, heat shrink tubing. Expansion to finalize the design parameters are: temperature 120 ~ 150 ℃, the input speed of 8 ~ 10 hz, pull out rate of 8 ~ 10 hz, vacuum - 0. 06MPa。

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