FOLDING A SANDWICH BOAT

FOLDING-A-SANDWICH-BOAT-01 FOLDING-A-SANDWICH-BOAT-02 FOLDING-A-SANDWICH-BOAT-03 FOLDING-A-SANDWICH-BOAT-04 FOLDING-A-SANDWICH-BOAT-05 FOLDING-A-SANDWICH-BOAT-06 FOLDING-A-SANDWICH-BOAT-07

/// FOLDING A SANDWICH BOAT

IMAGINED BY: Herbert Funke, Marcel Bilow

DATE: 28/06/2006

KEYWORDS: layered construction, load-bearing, low-cost, structure, composites

A glass-fiber-reinforced plastic (GRP) boat was developed during a plastic seminar.
The sandwich core, providing structural height, serves as a lost mold: thus, no additional molding forms are needed. The boat is constructed in 4 stages: first, the foam core is laid out and coated with GRP on one side. Pressure is then applied by a deflated, enveloping, airtight plastic bag. When the coating is cured, this plane element is turned around, and the foam core is cut along the folding pattern. Tests showed that the outer GRP skin does not delaminate during the folding. Finally, the inner side is also coated with GRP, keeping the folded form in shape and providing the final stiffness.

This project was supported by the following companies: Gebr. Becker GmbH & Co KG / Wuppertal (vacuum pump), Hyco-Vakuumtechnik GmbH / Krailling, R&G GmbH Faserverbundstoffe / Waldenbuch (GRP ), epurex films / Walsrode (foil for vacuum pressure)

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: