Importance

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Abstract

The present invention relates to a flame-retardant decorative flooring material including a lower layer; a base layer; a printed layer; and a transparent layer sequentially from bottom to top, wherein at least any one of the layers includes a polyvinyl acetal resin. In addition, the present invention relates to a method of manufacturing a flame-retardant decorative flooring material including a lower layer; a base layer; a printed layer; and a transparent layer sequentially from bottom to top, the method including (1) a lower layer preparation step of preparing a lower layer using a composition including 100 parts by weight of a polyvinyl acetal resin and 100 to 400 parts by weight of a filler based on 100 parts by weight of the polyvinyl acetal resin; (2) a base layer preparation step of preparing a base layer composed of glass fiber that is immersed in a PVC sol; (3) a printing step of forming a printed layer by printing a pattern on the base layer or laminating the base layer with a pattern-printed film or paper; (4) a transparent layer preparation step of preparing a transparent layer composed of a transparent PVC film or a PET film; and (5) a lamination step of disposing the base layer including the printed layer formed thereon between the lower layer and the transparent layer and laminating the same.

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First Claim