Abstract: An attenuating burner apparatus which requires less energy to soften the glass filaments. A shroud is provided for the attenuation zone which retains heat and limits the amount of dilution air that is entrained by the attenuation blast. The forward portion of the shroud is pivoted to permit adjustment to provide general alignment with the attenuation blast. A closure is provided for at least one of the openings through which dilution air is inspirated and a preheater uses waste heat to increase the temperature of the dilution air inspirated through another of the openings.

Abstract: A flame resistant low-smoke hot melt adhesive composition, particularly useful for adhering facings to building products and thermal insulations, is disclosed. The composition consists essentially of, in parts by weight, 11-45 parts of high (at least 200.degree. F.) melt point paraffin wax, 10-14 parts of halogenated (preferably chlorinated) microcrystalline or paraffin wax, 0.3-10 parts of halogen scavenger, 5-20 parts of a flame suppressant synergist, 5-20 parts of a low temperature resistant vapor barrier barrier elastomer, and 0.5-10 parts of smoke suppressant. Preferably the composition will also contain a carbon dioxide donor/filler. The material is not tacky when cold, can be readily reactivated by heating, and can be applied in discrete units.