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Patent Searching and Data


Title:
COMPOSITE SANDWICH STRUCTURE AND METHOD FOR PRODUCING SUCH STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2013/167696
Kind Code:
A3
Abstract:
A device for producing a composite sandwich structure (1), wherein the sandwich structure comprises at least a first and second face sheets (2, 3) of a fibrous reinforcing material sandwiching between them a sheet of a core material (4), the device comprising a connecting fibre inserting apparatus for connecting the first face sheet (1), the core material (4) and the second face sheet (3) by means of connecting fibres (6). The connecting fibre inserting device comprises at least one needle bar extending transversally in the moving direction of the sandwich structure (1) and provided to exert a reciprocating movement in height direction of the sandwich structure (1). The needle bar comprises a plurality of spaced apart needles (11), arranged to face the first face sheet (2), and provided to take along a length of connecting fibre yarn (6) when reciprocating in and out of the sandwich structure (1) thereby forming a loop at the lower surface of the second face sheet (3). The connecting fibre inserting device also comprises at least one looper (12) arranged on a side facing the second face sheet (3) provided to co-operate with at least one needle (11) for seizing the loop of connecting fibre (6), and wherein the movement of the looper (12) is driven by a driving device which is provided to drive the movement of the looper (12) independently of the needle bar.

Inventors:
VERHAEGHE JAN (BE)
Application Number:
PCT/EP2013/059661
Publication Date:
December 27, 2013
Filing Date:
May 08, 2013
Export Citation:
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Assignee:
GROEP STEVENS INTERNAT (BE)
International Classes:
B29C70/24; B29C70/52; B32B5/06; D05B57/00
Foreign References:
US20070261620A12007-11-15
US20100266833A12010-10-21
Attorney, Agent or Firm:
DUYVER, Jurgen et al. (Diegem, BE)
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