SEALING METHOD OF MULTI-LAYER TUBULAR CASE FOR COSMETICS

摘要

PURPOSE: A sealing method of multi-layer tubular case for cosmetics is provided, which is reinforced in adhesion and sealing efficiency by differentiating compositions and amounts of materials used to prevent leakage during use. CONSTITUTION: The sealing method of a tubular case consisting of multiple layers of inner and outer layers(30,40) containing inorganic pigments and an adhesive layer(40), comprises forming the inner and outer layers(30,40) using different polymer materials in view of compositions and amounts. A polymer having a low polymerization degree and a low melting point is used in a relatively larger amount in the composition of the inner layer(30) than in the composition of the outer layer(40).