| 摘要 |
A heat-sealing adhesive film includes a thin film of high melting point heat-sealing adhesive layer having two low melting point heat-sealing adhesive layers separately applied over two opposite sides thereof. When the heat-sealing adhesive film is heated to a specific temperature suitable for melting the two low melting point heat-sealing adhesive layers but lower than the melting temperature of the high melting point heat-sealing adhesive layer, the two low melting point heat-sealing adhesive layers becoming cured provide an excellent bonding strength between them and a substrate and a surface item separately pressed against two sides of the heat-sealing adhesive film, and the high melting point heat-sealing adhesive layer enables the two low melting point heat-sealing adhesive layers to firmly, elastically, and flexibly bond to each other.
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