Crosslinked polyethylene plastic in the cross-linked tube was viscous flow, we use the US Dow Chemical 35KV grade low cross-linked insulation material to increase the viscosity of the plastic itself, thereby reducing the melting temperature of the material under the sagging, Layer co-extrusion equipment with an on-line analyzer so that the product insulation and eccentricity have been effectively controlled, fully meet the Changsha subway eccentricity requirements In 5% or less.
This phenomenon is mainly due to the larger cable core diameter, vertical aluminum package forming deformation due to the uneven force caused after the vertical box of aluminum is not smooth, the first is the aluminum-plastic composite belt longitudinal package mold, from large to small there are two Group, must strictly check the size of the mold before production, for aluminum-plastic bandage does not make bond, timely adjustment of the location and temperature of hot air gun, can better solve the problem;
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