| 20090309263 | DEVICE AND METHOD FOR THE PRODUCTION OF A WATER BARRIER IN AN UNHARDENED ROOF TILE - The invention relates to a device and a method for producing a water barrier in unsolidified roof tile preforms. The inventive device comprises a molded piece with a recess as well as a die. The molded piece is disposed above the end of a roof tile perform, whereupon all or part of the rear edge of the roof tile perform is pressed upward by means of the die. The roof tile perform is then dried. | 12-17-2009 |
