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 JP3459014
Kind Code:
B2
Abstract:
Duplex layers of carbon fibre each comprising a lower portion of uni-directional filaments and an upper staple fibre portion are laid one on top of the other in an annular form. Needles are reciprocated through the layers to cause the staple fibre to be pushed downwardly to interconnect the layers. The base supporting the layers being assembled is gradually lowered until there comes a time when the bottom of the needle stroke no longer passes through all of the layers. At that time additional layers comprising staple fibre only are added and needled down into the stack to enrich the lower layers. After that enrichment the stack is then built up by adding further duplex layers. When all of the duplex layers have been added, further staple fibres may be added to the stop of the stack and needled in order to enrich the upper layers with interconnecting staple fibres, which upper layers would otherwise be deficient in interconnecting staple fibre.
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Inventors:
Lawton, Peter Geoffrey
Smith, norman
Smith, norman
Application Number:
JP50679095A
Publication Date:
October 20, 2003
Filing Date:
July 04, 1994
Export Citation:
Assignee:
Aerospace Preforms Limited
International Classes:
B29B11/16; D01G25/00; D04H3/10; D04H13/00; D04H18/00; F16D69/02; (IPC1-7): D04H1/42; D04H1/46; D04H18/00
Domestic Patent References:
| JP1115576A | ||||
| JP626956A | ||||
| JP2127555A |
Other References:
【文献】国際公開92/004492(WO,A1)
Attorney, Agent or Firm:
Masakazu Momma