Hollow double spirally-wound plastic hose and production process thereof
A technology for plastic hoses and production processes, applied in the field of hoses, can solve problems such as cracking
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[0036] The invention provides a hollow double-helix wound plastic hose, which is composed of a base strip 1 and a reinforcement strip 2 . Seen from the cross-section, the basic strip 1 is composed of three parts, the middle part is a hollow trapezoidal winding unit 11, the front and rear flanks are connecting edges, and the rear flank 13 is provided with a stepped bonding section, The front side wing 12 is an adhesive section with an inverted step, and is adhesively fitted with the rear adhesive section. The reinforcing strip 2 is an upside-down embedded hollow regular trapezoid a or hollow hexagon b.
[0037] The production process of the hollow double-helix wound plastic hose of the present invention, the specific process steps are as follows:
[0038] First, the base tape 1 is extruded from the first extruder 31, and the base tape 1 is wound. At the same time, the second extruder 32 is used to extrude the reinforced strip 2; wherein, the process of the first extruder 31 i...
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Abstract
Description
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