Title:
HONEYCOMB CORE MANUFACTURING METHOD AND MANUFACTURING DEVICE USING DOMED BONDING LAYER
Document Type and Number:
WIPO Patent Application WO/2019/163151
Kind Code:
A1
Abstract:
[Problem] To provide a honeycomb core manufacturing method using a domed bonding layer, the method comprising, during bonding of cells, heating a bonding sheet with hot air and forming a uniform bonding layer on an end surface of each honeycomb cell, thereby providing a honeycomb core that has stable strength and is lightweight.
[Solution] A manufacturing method for manufacturing a honeycomb core employs, when bonding and molding a thermally-weldable bonding sheet with respect to a core material in which a plurality of ribs are connected to each other to constitute an aggregate of cells, a means comprising: a dome forming step of feeding upward hot air by pressure into the cells from a lower side to an upper side with respect to the flat bonding sheet laid on an upper surface of the core material, to thereby form a dome-shaped bonding layer on an upper surface of each of the cells; a rupturing step of feeding downward hot air by pressure from the upper side toward the vicinity of the apex of the dome-shaped bonding layer to rupture the bonding layer; and a thermally-welding step of forming a uniform bonding layer on upper surface edge parts of the cells by means of melting properties and surface tension.
Inventors:
SUGITA TAKESHI (JP)
Application Number:
PCT/JP2018/017848
Publication Date:
August 29, 2019
Filing Date:
May 08, 2018
Export Citation:
Assignee:
TEC CO LTD (JP)
International Classes:
B32B3/12; B32B37/06; B32B37/12
Foreign References:
| US4155800A | 1979-05-22 | |||
| JPH05193028A | 1993-08-03 | |||
| JP2006501057A | 2006-01-12 |
Attorney, Agent or Firm:
KAMIYOSHIHARA,Hiroshi (JP)
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