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Heating cable PTC core tape manufacturing method

A manufacturing method and heating cable technology, applied in the direction of heating element material, heating element shape, etc., can solve the problems of poor quality of heating cable, difficult industrial application, large starting current, etc., achieve product performance innovation, improve interface contact Effects of improved resistance and manufacturing accuracy

Inactive Publication Date: 2018-05-04
ANHUI HERTE ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the self-limiting temperature heating cable of this structure works for a period of time, serious power attenuation often occurs, the starting current becomes larger, and the situation of burning the heating cable sometimes occurs, resulting in the extremely poor reputation of this heating cable, which is difficult to realize. Industrial application

Method used

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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0021] A method for manufacturing a heating cable PTC core belt, comprising the following steps:

[0022] 1) Preparing metal wire electrodes: using a beam machine to twist equal-tension stranded wires as metal wire electrodes, and the centerline spacing of the metal wire electrodes is 5-6mm;

[0023] 2) Preparation of resin conductor layer: the resin conductor layer is prepared according to the following proportions of raw materials: 100 parts of low-density polyethylene, 5-12 parts of PE-EVA three-layer aging-resistant composite shed film, and 40-45 parts of conductive carbon black , 3-7 parts of oxidizing agent, 0.3-0.5 part of stearyl propionate, 0.2-0.5 part of didodecanyl thiodipropionate, 0.2-0.3 part of zinc stearate;

[0024] 3) Irradiati...

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Abstract

The invention discloses a heating cable PTC core tape manufacturing method, and relates to the field of heating cables. The method comprises the following steps of 1, preparing a metal wire electrode;2, preparing a resin conductor layer; 3, conducting irradiation crosslinking; 4, extruding the heating cable PTC core tape; 5, conducting irradiation crosslinking for the second time. According to the method, the resin conductor layer is added between the electrode and a heating element of a product to improve interface contact resistance to prolong service life of the product, the process is innovative, a double-core and double-layer co-extrusion processing method is adopted to guarantee that the resin conductor layer and the PTC heating element are shaped simultaneously and stuck with eachother in a molten state, the contact is good, and the expansion difference is reduced; a manufacturing method of equal-tension regular structure strand wire is adopted, so that manufacturing precisionof stranded conductors is improved to guarantee demands of the extrusion of the ultra-thin and large-length resin conductor layer; the product performance is innovative, and a step of conducting irradiation crosslinking is added, so that temperature stability and durability of the product are improved.

Description

technical field [0001] The invention relates to the field of heating cables, in particular to a method for manufacturing a heating cable PTC core belt. Background technique [0002] Self-limiting temperature heating cable (hereinafter referred to as heating cable) is also called self-regulating electric heating cable or temperature-controlled heating cable. It is a strip-shaped temperature-limiting tracer whose electric heating power is self-adjusting with the system temperature. The heating element of the heating cable is a layer of conductive plastic with a positive temperature coefficient that is uniformly extruded between two parallel metal busbars. Conductive plastic is connected across two parallel busbars to form a parallel circuit resistance heating element, which can automatically adjust the output power and the released heat according to the temperature change of the heated system, so as to achieve the purpose of automatic temperature limit and ensure the stabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/56H05B3/12
CPCH05B3/12H05B3/56
Inventor 郑书林
Owner ANHUI HERTE ELECTRIC CO LTD
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