Method of making fibrous products and products
AssigneeJohns Manville
InventorsPhilip Francis Miele, Mark Allan Granger
Life of this patent
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Abstract
A method of making fibrous mats, webs, and/or blankets containing one or more low volatile de-dusting agents, and the fibrous products so produced, the method eliminating or substantially reducing condensation of volatiles in the drying oven, oven recirculating ducts and oven exhaust ducts and eliminating or substantially reducing oven and duct fires while producing fibrous products having effective dust suppression properties.
Claims21
A method of producing a fibrous mat, web and/or blanket products comprising glass, glassy and/or inorganic fibers, the products causing less irritation and abrasion to the skin, the inorganic fibers having an average fiber diameter in the range of about 0.5 to about 23 microns comprising applying a de-dusting agent to the fibers, collecting said fibers on a collection belt to form a web, mat or blanket and subsequently hot processing the web, mat or blanket to a temperature in the range of about 175 degrees C. to about 345 degrees C. to make the fibrous product, the improvement comprising;
- using as the de-dusting agent about 0.2 to about 1.2 wt. percent, based on the dry weight of the finished product, of a processed oil having a flash point of at least about 300 degrees C. and having low volitilization at the hot processing temperatures, the low volitilization defined as containing about 40 to about 60 wt. %, less volatiles when tested at 300 degrees C. (TGA test) than Brightstock 150 type petroleum oil de-dusting agent.
Dependencies are inferred from the claim text.