| 摘要 |
A fibrous substrate for making a coated abrasive article, containing urea or a mixture of urea and at least one hygroscopic material, particularly a mixture of urea and an inorganic salt, and especially of urea and sodium nitrate, is disclosed. Coated abrasive articles consisting of said substrate and abrasive grains adhered to one side thereof by means of at least one adhesive layer are also disclosed. Furthermore, the use of urea, or of a mixture of urea and another material as defined above, for preventing curling in a fibrous substrate during the production of a coated article, particularly a coated abrasive article, from said substrate, is disclosed.
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