Rabbet

The fold is a method used in bonding technology form element:

• It is a step in the edge of a flat body. Such folds there are specially at the edges of windows and doors for better sealing of drafts, the drafts will be slowed down by repeated deflection in the remaining gap. Often several folds are mounted side by side to increase the number of deflections and to improve the sealing function on.
• It is produced in a sheet metal fold in the second plate is inserted with its edge, thereby forming a relatively dense sheet compound.

Word origin

It is probably already ahd rebate to take to fold in linguistic proximity - Middle High German there is the word but also for the cutting edge or blade, the sword, hence also an aspect of lies, sharp-edged ' basis.

Functions and production

Depending on the particular expression of the fold one speaks of the single or double fold, from standing or lying on the fold as well as from Deckfalz.

In woodworking, a fold is usually with the help of a special tool, the Guillaume made ​​.

When connecting sheets, the strength of the seam connection depends against pulling out of the pressure between folds and inserted sheet. A low pressure allows for instance due to temperature changes required displacement between the joined parts, where there is nevertheless a water- tight connection.

Use

The fold occurs

• As simple or stepped on the flat sequence of disks (eg, plate-like materials such as solid insulation materials )
• The rind insertion of the false ceiling
• The stop of the window, door, gate and wing loading to the respective frame parts
• As a half-groove for fixing and sealing of glazing or window putty and possibly Glaser corners
• In the manufacture of copper, zinc, lead and iron sheet roofing in place of riveting and soldering - the latter nowadays usually on both sides with plastic coatings
• As a rabbet in wooden boats and ships