Title:
【発明の名称】造形フィラメント構造の製造
Document Type and Number:
Japanese Patent JPH06500366
Kind Code:
A
Abstract:
A method of producing a shaped fibrous fabric structure in which a continuous filament sheet (16a) is subjected to a needle punching action, segments (36, 38) are cut from the sheet and these segments are assembled to form an annulus, and then subjected to rotary motion under a reciprocating needling head (18) and continuing to add segments to build up a stack of layers whilst at the same time continuing the needling action, and lowering the base of the stack relatively to the needling head. In a final step, one or more layers of segments (250, 252, 254) are added to the top of the stack, and these are needled into the stack without lowering the stack. Furthermore, these additional layers are preferably made entirely of stapled fibres. Some or all of the layers of segments below the final layers may themselves be made of duplex material comprising continuous filament (16a) on which is laid a web of stapled fibres (15) before the duplex material is produced by needling the stapled web to the continuous filaments.
Inventors:
Lawton, Peter Geoffrey
Smith, norman
Smith, norman
Application Number:
JP51420491A
Publication Date:
January 13, 1994
Filing Date:
August 28, 1991
Export Citation:
Assignee:
Aerospace Preforms Limited
International Classes:
B29B11/16; D01G25/00; D04H13/00; D04H18/00; F16D69/02; D04H3/10; (IPC1-7): D04H18/00; D04H3/10
Attorney, Agent or Firm:
Shoichi Monma