Fire-resistant low-voltage wire and cable and manufacture method thereof
A wire and cable and manufacturing method technology, applied in the field of fire-resistant low-voltage wire and cable and its manufacturing, can solve the problems of low production efficiency, poor fire resistance of fire-resistant low-voltage wire and cable, high production cost, etc., and achieve high production efficiency and small overall outer diameter , good fire resistance
Inactive Publication Date: 2018-12-21
天津市新众诚电线电缆有限公司
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Problems solved by technology
[0005] The object of the present invention is to provide a method for manufacturing fire-resistant low-voltage wires and cables and fire-resistant low-voltage wires and cables, so as to solve the problem of poor fire resistance of the fire-resistant low-voltage wires and cables manufactured by the method for manufacturing fire-resistant low-voltage wires and cables in the prior art , low production efficiency and high production cost
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[0029] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear ", "front", "rear", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying No device or element must have a spe...
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The invention provides a manufacturing method of a fire-resistant low-voltage wire and cable and a fire-resistant low-voltage wire and cable, A method for manufacturing a fire-resistant low-voltage wire and cable in that field of electric wire and cable includes such step of longitudinally wrapping fire-resistant layer on outer core, win wrapping tape on outer fire-resistant layer so as to wrap fire-resistant layer on outer core, ceramic silica gel tape being used as fire-resistant layer; Outer sheath wrapping: extruding an Insulating sheath on the outer side of the wrapping tape. Because thefire resistance of ceramic silica tape is higher than that of mica tape; Moreover, the wrapping tape of the present invention only needs to be sequentially wound outside the ceramic silica gel tape when manufacturing the fire-resistant low-voltage electric wire and cable, and does not need to be covered. Therefore, compared with the prior art, the manufacturing method of the present invention hashigher production efficiency, lower production cost and better fire resistance of the electric wire and cable than the prior art.
Description
technical field [0001] The invention relates to the field of wires and cables, in particular to a fire-resistant low-voltage wire and cable and a manufacturing method thereof. Background technique [0002] Low-voltage wires and cables refer to wires and cables of 0.6-1.0 kV and below. Fire-resistant low-voltage wires and cables are widely used in real life. power connection. Once a fire breaks out, the wires and cables need to have good fire resistance, and can transmit current normally within tens of minutes, so that the indicator light can work normally, so as to provide people with the role of guiding the direction of escape. [0003] The existing manufacturing method of fire-resistant low-voltage wire and cable is generally to wrap multi-layer mica tape outside the core, and then extrude the insulation sheath outside the mica tape; and the covering rate of each layer of mica tape needs to reach more than 50%. , to ensure that when the wire and cable are bent and the in...
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IPC IPC(8): H01B7/29H01B13/26
CPCH01B7/29H01B13/2613
Inventor 孔祥来
Owner 天津市新众诚电线电缆有限公司