Back to results
US 10,500,761 B2Granted
Method to improve surface finish of glass fiber mat
AssigneeUnited States Gypsum Company
InventorAlfred Li
Life of this patent
Estimating the term…
Abstract
A durable, moisture-resistant gypsum product is provided with smooth furnish which comprises a laminated glass fiber mat in which glass fibers are compressed and cross-linked with a thermosetting polymeric resin. Methods for making these gypsum products and glass fiber mats are provided as well.
Claims14
A method for making a gypsum product, the method comprising:
- obtaining a glass fiber mat;
- laminating the glass fiber mat with a thermosetting polymeric resin by soaking the glass fiber mat in the thermosetting polymeric resin;
- partially curing the thermosetting polymeric resin;
- after the thermosetting polymeric resin is partially cured, but before the thermosetting polymeric resin is fully cured, compressing glass fibers in the glass fiber mat by at least one of the following means:
- in a wet press under a pressure in the range from 5 psi to 100 psi, and/or by a calendar;
- curing the thermosetting polymeric resin by exposing it to heat;
- preparing a gypsum slurry;
- depositing the gypsum slurry onto the cured laminated glass fiber mat;
- and
- letting the gypsum product set.
7 more elements
A method for making a laminated glass fiber mat, the method comprising:
- obtaining a glass fiber mat;
- soaking it in a thermosetting polymeric resin;
- partially curing the thermosetting polymeric resin;
- after the thermosetting polymeric resin is partially cured, but before the thermosetting polymeric resin is fully cured, compressing the fibers in the glass fiber mat with a wet press under the pressure in the range from 5 psi to 100 psi and/or by a calendar;
- and
- curing the laminated glass fiber mat in a dryer.
3 more elements
Dependencies are inferred from the claim text.