摘要:
A braiding machine which operates to deliver a first set of yarns about a vertical axis along a first plane to a braiding point and a second set of yarns about the vertical axis along a second plane located above the first plane to the braiding point and a third set of yarns stationarily arranged about the vertical axis for delivery along a third plane intermediate of the first and second planes to the braiding point. The machine includes an interlacing mechanism which is associated with each yarn of the third set of yarns and including a rotating interlacing member. The interlacing member of each interlacing mechanism is operative to successively engage and carry the first yarns out of the first plane above said third plane over a third yarn of the third yarns and to carry the second yarns out of the second plane below the third plane beneath a third yarn of the third yarns causing each of the first and second yarns to successively interlace with each of the third yarns during their movement about the vertical axis. This positioning action between the first, second, and third yarns forming a braided fabric of superior strength and stability.
摘要:
An axially stable tubular braided fabric comprising a longitudinal set of yarns extending longitudinally of the fabric, a first set of yarns arranged substantially along a first cylindrical plane and at an angle relative to the longitudinal yarns and a second set of yarns arranged substantially along a second cylindrical plane and transversely of the first set of yarns. The yarns of the longitudinal set are passed consecutively over one and under the other of the yarns of the first and second sets interlocking these yarns together in an axially stable position with the yarns of the first set predominating the outer surface and the yarns of the second set predominating the inner surface.
摘要:
A process for reducing the glycol ether content in polyesters involves adding a glycol to a polyester oligomer solution prior to polymerization, distilling the oligomer solution to remove vapor containing the glycol as well as the glycol ether, and polymerizing the solution to produce a polyester containing a reduced glycol ether content.