FLAMEPROOF PAPER FOR BACKING OF VINYL WALL PAPER

摘要

PROBLEM TO BE SOLVED: To obtain flameproof paper for backing of vinyl wall paper having slight pin-holes, excellent formation and flameproof effect with a small amount of flame retardant by applying or impregnating a guanidine-based flame retardent to a sheet comprising fibers and an inorganic material. SOLUTION: This flameproof paper for backing of vinyl wall paper having <100g/m<2> basis weight is obtained by adding inorganic powder such as calcium carbonate and an inorganic fibrous material such as 'SANPI' (inorganic fibrous material mainly composed of sepiolite) to a pulp slurry formed by disaggregating and beating a (1:1) mixture of needle-leaved tree bleached kraft pulp and broad- leaved tree bleached kraft pulp and mixing to obtain a sheet, and applying or impregnating a guanidine-based flame retardant such as guanidine sulfamate on the sheet. An adding amount of the inorganic material is 20-50wt.% calcium carbonate and 2-10wt.% 'SANPI' based on total weight of the flameproof paper to reduce a using amount of the flameproof agent.