Technology for producing PVC insulated nylon flexible wire using double machine extruding method

A polyvinyl chloride and nylon sheath technology, applied in the direction of insulated cables, insulated conductors, circuits, etc., can solve the problems of wire surface smoothness, mechanical properties and safety reliability reduction, shortened service life, and loose joints, etc. Improve safety and reliability, prolong service life, and prevent the effect of surface bagging

Inactive Publication Date: 2005-03-16
湖北红旗电缆有限责任公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the production process, the polyvinyl chloride insulating layer coated on the wire core will absorb moisture and dust in the air when it stays in the air, resulting in a non-vacuum state between the nylon sheath layer and the polyvinyl chloride insulating layer. If it is not tight, the surface smoothness, mechanical properties and safety reliability of PVC insulated nylon sheathed wires will be reduced, and the wires will be prone to aging, shortening the service life and causing safety accidents

Method used

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  • Technology for producing PVC insulated nylon flexible wire using double machine extruding method
  • Technology for producing PVC insulated nylon flexible wire using double machine extruding method
  • Technology for producing PVC insulated nylon flexible wire using double machine extruding method

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Embodiment

[0019] Such as figure 1 The process of producing polyvinyl chloride insulated nylon sheathed wires by double-machine co-extrusion method shown in the figure, the specific steps are as follows:

[0020] 1. Clean the inner cavity, connectors, shunts, etc. of the nylon extruder, PVC extruder and main engine head, remove the attached glue impurities and coke particles, install the mold and check the surface finish of the mold;

[0021] 2. The pay-off machine releases the wire core, and the wire core enters the host head to preheat, and the wire core should be produced by extrusion extrusion;

[0022] 3. Use a vacuum drying suction machine to dry and transport the nylon material. After drying, the moisture content of the nylon material should not be higher than 0.3%, and the unpacked nylon material should not be exposed to the air for more than 45 minutes;

[0023] 4. Vacuuming inside the nylon extruder, PVC extruder and host head;

[0024] 5. The dried nylon material is sucked i...

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Abstract

Disclosed is a technique using dual-machine extrusion method to produce polyvinyl chloride insulating nylon jacket electric wire. Make nylon and polyvinyl chloride separately melt by nylon extruding machine and PVC extruding machine, which are separately injected into different ingates and channels of shunt in prime machinery head, firstly polyvinyl chloride is extruded and then nylon to form tightly connected insulating layer of polyvinyl chloride and nylon jacket layer covered on it. Polyvinyl chloride insulating nylon jacket electric wire is formed through word sprinkling, cooling and taking up of capstan. It has the advantages of increased smoothness and mechanical performance of electric wire surface, simplified technique, shortened production line, prolonged wire service life and excellent safety and reliability.

Description

technical field [0001] The invention relates to a production process of polyvinyl chloride insulated nylon sheathed wires, in particular to a process for producing polyvinyl chloride insulated nylon sheathed wires by a double-machine co-extrusion method. Background technique [0002] Plastic series wires and cables for fixed wiring are mainly divided into two categories: one is polyvinyl chloride insulated wire, and the other is polyvinyl chloride insulated nylon sheathed wire. At present, polyvinyl chloride insulated wires are widely used in the domestic market. This type of wire has been manufactured and used in my country for 40 years and has a wide range of applications. Small heat capacity, not resistant to high temperature, thermal shrinkage, low mechanical strength of the insulating layer, not resistant to oil pollution and chemical corrosion, easy to damage the insulating layer when laying through the pipe, not suitable for use in humid e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B13/24
Inventor 胡建序吴明宝杨永新杨正平
Owner 湖北红旗电缆有限责任公司
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