Sheet for absorbing impact and sealing having adhesiveness and preparation method thereof

Abstract

The present invention provides an impact-absorbing and sealing sheet having adhesiveness and a preparation method thereof. More specifically, the present invention provides an impact-absorbing and sealing sheet comprising sequentially a release paper, a coating layer on the release paper, a polyurethane layer, and a surface coating layer. The coating layer is formed by coating a side of the release paper with a composition comprising 95 to 99.9 parts by weight of a resin binder which is at least one selected from the group consisting of urethane resin, urethane acryl resin, acryl resin, and acryl silicon resin; and 0.1 to 5 parts by weight of a powder additive which is at least one selected from the group consisting of barium sulfuric acid, calcium carbonate, magnesium carbonate, magnesium hydroxide, talc, and silica. Furthermore, the present invention provides a preparation method of an impact-absorbing and sealing sheet which comprises preparing a release paper; forming a coating layer on the release paper by coating a side of the release paper with a composition; forming a polyurethane layer by coating the coating layer on the release paper with polyurethane; and forming a surface coating layer on the polyurethane layer.

Dependencies are inferred from the claim text.