Nonuniform heating power die lip thermal insulation panel

Abstract

The invention discloses a nonuniform heating power die lip thermal insulation panel, and relates to the technical field of accessories of casting extruders. The nonuniform heating power die lip thermal insulation panel comprises a support insulating piece, wherein an electric heating wire is wound outside the support insulating piece, and the density of the electric heating wire wound on both ends of the support insulating piece is greater than that of the electric heating wire in the middle. The electric heating power on both ends of the die lip thermal insulation panel is high and the electric heating power in the middle is low, thereby preventing casting resin properties from changing due to different thermal losses at different positions on the die lip. The invention ensures temperature consistency of casting resin stripping from the die head, can be used for processing thinner coatings, and makes high speed processing possible.

Description

technical field [0001] The invention relates to the technical field of accessories for tape casting extruders. Background technique [0002] The die lip insulation sheet is the last part to heat the resin before the plastic resin leaves the head. The existing die lip heaters have the same electric heating power at the same length, that is, the electric heat is evenly distributed. When the temperature is relatively high When the temperature is low, the heat dissipation at both ends of the die lip is faster, causing the cast film to be thin on both sides and thick in the middle, and it is easy to form tears on both sides. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the prior art, and provide a non-uniform heating power die lip insulation sheet, so that the temperature of the casting film is consistent when it exits the die head. [0004] The object of the present invention is achieved in the following way: the no...

AI Technical Summary

Problems solved by technology

[0002] The die lip insulation sheet is the last part to heat the resin before the plastic resin leaves the head. The existing die lip heaters have the same electric heating power at the same length, that is, the electric heat is evenly distributed. When the temperature is relatively high When it is low, the heat dissipation at both ends of the die lip is faster, resulting in thinner sides of the cast film and thicker middle, and easy to form tears on both sides

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