COLD CRACK

To measure the cold crack resistance

 
This type of test allows one to identify the cold temperature in which the finishing of the leather cracks.
The leather sample is fixed on the COLD CRACK instrument and kept in a chilled chamber at an established temperature. The apparatus is then closed very quickly so that the leather undergoes one rapid fold. The sample is then examined to see if there is any cracking on the leather.

The recommended value of cold crack resistance, according to the current European Standard of Leather Upholstery Characteristics, is: 

-15°C : no cracking on the finish