METHOD OF PRODUCING MINERAL FIBER WEB

摘要

A method of producing a mineral fiber web comprises producing a non-woven mineral fiber web including mineral fibers and droplets or particles of a heat curable bonding agent (less than 10 % of the total web weight) including a heat expandable agent capable of generating a volumetric expansion of the droplets or particles of approximately 2 - 1,000 times by exposure to an elevated temperature, and heating the non-woven mineral fiber web to an elevated temperature so as to cause the droplets or particles of the heat curable bonding agent to volumetric expand for substantially increasing the bonding agent contact between the mineral fibers of the non-woven fiber web and further so as to cause the heat curable bonding agent to cure for bonding the mineral fibers to one another.