ES360915A2 - Procedure for the obtaining of polishing provisions by rubbing. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in the patent of invention no. 339,449, by "procedure for obtaining polishing provisions by rubbing", in which a continuous sheet of relatively reduced thickness, obtained in soft material, is subject to the application of a layer of adherent material, continuously or discontinuously, with the use of a hopper or doctor blade, on which a layer of material dosed by means of a hopper is then disposed, then at least one layer of adherent material is applied, being carried out after the first of they rotate the sheet to eliminate the excess abrasive, finally passing the prepared sheet with its layers to an active drying phase, which is followed by a sectioning operation by means of conveniently placed blades, or vertical, with the in order to fragment the sheet and obtain a plurality of loose pieces suitable for individual use, characterized by the fact that starting from a continuous flexible sheet, as a support element based on felt, nappa or non-woven fabric, which optionally is immersed in a detergent liquid that frees it of powders and impurities with subsequent drying in homo, whose sheet is a layer of resin that is incorporated in it is projected, the sheet then passing through the oven and then being wound in a drum, after which said sheet is unwound to carry out the course in the reverse direction or receive a layer of resin and abrasive powder, with a next step at a fast speed through the drying oven, the previous cycle is repeated a certain number of times, depending on the thickness of the material to be adopted, after which the position of the supply drum is inverted to repeat the process in the remaining face of the sheet, which is finally dried in a slow oven at high temperature, without water vapor, to polymerize the resins. (Machine-translation by Google Translate, not legally binding)