Abstract:
The present application pertains to a compression packing seal including a braided dual-sided jacket, methods for producing and using such a seal, and apparatuses suitable for producing such a seal. The compression packing seal is made up of a core (132) and a jacket (134) braided round the core. The jacket may include two or more different materials (140, 150) that are braided together in such a way that, in cross-section, the jacket has an asymmetrical configuration relative to a first axis that is substantially perpendicular to the longitudinal axis and is substantially perpendicular to a side of the jacket. Accordingly, when viewed in a cross-sectional plane, the jacket may expose substantially only a first material along a first side, and substantially only a second material along a second side.
Abstract:
A cylindrical three-dimensional weaving platform is disclosed, which comprises a central shaft and n strip units (2), wherein the n strip units are annularly distributed around the central shaft; n is an even number; each strip unit (2) comprises a bottom plate strip (3); the length direction of each bottom plate strip (3) is parallel to the direction of the central shaft; each bottom plate strip(3) comprises two opposite surfaces; one surface facing to the central shaft, of each bottom plate strip (3) is an inner surface; one row of m inner yarn carrying discs (4) are arranged on one side of the inner surface of each bottom plate strip (3) in the length direction; m is a natural number; the inner yarn carrying discs (4) on the n strip units (2) form a cylindrical weaving platform; m circles and n rows of inner yarn carrying disc (4) arrays are arranged on the cylindrical weaving platform; each inner yarn carrying disc (4) is in transmission connection by using an inner shaft (41) which is pivoted with each bottom plate strip (3); the inner shafts (41) are connected with one same power source or different power sources, so that the inner yarn carrying disc (4) arrays can relatively rotate at a preset speed in a preset direction. By adopting the weaving machine, the weaving platform can be very conveniently expanded.