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Air-Jet Texturing and Yarns.

  • 출판일2002.07
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 239
Turbulent compressed air forms loops on the surface of air jet textured yarns and imparts a voluminous character. The loop structure confers properties that resemble those of conventional staple yarns. Basic air jet texturing machines consist of a yarn supply in a creel, a winding head fitted with yarn transport, an extra pair of feed rolls, and an air jet. The feed rolls before the air jet operate at a higher feed rate than those that draw the yarn out of the air jet. Processing thermoplastic yarns often requires a predraw zone consisting of at least one extra set of feed rolls and a draw pin. Processing polyester partially oriented yarns requires a heated draw pin to raise the yarn temperature above the second glass transition temperature. Heat setting reduces the residual shrinkage of textured yarns and the size of some or all of the surface loops. Stretching between the extra pairs of rolls improves yarn stability to loom tensions.
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