| 摘要 |
<p>PURPOSE: A manufacturing method of film for maintaining adhesive strength is provided to improve adhesive strength with classifying matte products and gloss products, and to be environment-friendly at the same time. CONSTITUTION: A manufacturing method of film for maintaining adhesive strength comprises: a step(S1) of forming material layers by laminating a first polypropylene layer, a second polypropylene layer, and a linear low density polypropylene layer; a step(S5) of classifying gloss products and matte products by measuring the material layers; a step(S7) of forming a mixture by mixing ethylene methyl acrylate, ethylene acrylic acid or ethylene acrylic acid into ethylene vinyl acetate with a determined mixing ratio; and a step(S9) of forming adhesive layer by spreading the mixture on the bottom of the material layer.</p> |
