Eight-type cable shielding process
A process, single-wire technology, applied in the field of eight types of wire shielding technology, can solve the problems of signal peaks, aluminum foil easily warped, signal leakage, etc., to prevent signal peaks, prevent deformation of single-wire conductors, and ensure integrity.
Inactive Publication Date: 2016-03-09
ZHEJIANG ZHAOLONG CABLE
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Problems solved by technology
Due to the longitudinal wrapping structure, there is no external force to fix the aluminum foil after it is formed, so the aluminum foil has a force release after forming, which makes the sealing of the aluminum foil easy to open. When the signal frequency reaches above 1GHz, the wavelength is already quite short. As a result, the joint gap of the shielding layer of the vertical package structure is enough for the signal wavelength above 1GHz to pass through, resulting in signal leakage and signal distortion
The test frequency of CAT8 reaches 2GHz. With the traditional longitudinal wrapping method of aluminum foil wrapping, the signal wavelength of 2GHz is enough to pass through the joint of the aluminum foil under the longitudinal wrapping method, resulting in signal leakage and signal spikes.
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[0019] Combine below figure 1 and figure 2 Specific description embodiment:
[0020] The eight-category wire shielding process is characterized in that the manufacturing steps are as follows:
[0021] 1) Single-wire process: adopt the single-wire structure process of leather bubble skin, select 8 single-wire conductors, and 2 single-wire conductors form a set of wire pairs. The outer layer of each single-wire conductor is wrapped with an insulating layer, and the inner skin of the insulating layer is improved by linear low-density PE. Improve the adhesion between the insulation and the single-wire conductor, making the subsequent processing of the conductor and the insulation structure more stable; the middle layer of the insulation layer adopts a foam structure to reduce the dielectric constant of the insulation and reduce the attenuation of the signal; the outer skin of the insulation is high-density PE, Improve the compressive capacity of the single wire and prevent the ...
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The invention belongs to the technical field of cable appliances and particularly relates to an eight-type cable shielding process. The invention discloses the eight-type cable shielding process. The process is characterized by comprising the following steps of: 1) a single wire process; 2) a pair twist process; 3) a lapping process; 4) a cable forming process; 5) a knitting process; and 6) a sheathing process. The process has the beneficial effects that a seal gap coated with aluminum foil is reduced as far as possible, the leakage of signals in cable pairs is reduced as far as possible, so that the completeness of the signals is ensured and the anti-electromagnetic interference effect is maximized; and the aluminum foil is clung to the cable pairs more closely, so that the stability of a cable pair structure is improved and the probability of signal peak generation is reduced.
Description
technical field [0001] The invention belongs to the technical field of cable appliances, and in particular relates to an eight-category wire shielding process. Background technique [0002] In conventional wire-pair shielded cables, the aluminum foil shielding method is generally longitudinal wrapping, but this structural design is suitable for products below 1GHz. Due to the longitudinal wrapping structure, there is no external force to fix the aluminum foil after it is formed, so the aluminum foil has a force release after forming, which makes the sealing of the aluminum foil easy to open. When the signal frequency reaches above 1GHz, the wavelength is already quite short. As a result, the joint gap of the shielding layer of the vertical package structure is enough for the signal wavelength above 1GHz to pass through, resulting in signal leakage and signal distortion. The CAT8 test frequency reaches 2GHz. With the traditional vertical wrapping method of aluminum foil wrap...
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IPC IPC(8): H01B13/00H01B13/26
CPCH01B13/262H01B13/2606H01B13/2633
Inventor 姚金龙王甫柱倪冬华叶国强王德全姚云翔
Owner ZHEJIANG ZHAOLONG CABLE