| 摘要 |
<p>Multilayer film comprises thin material layers bonded together by a layer that has a thickness of less than 10 mu m and is made of an adhesive composition. The adhesive composition comprises: a mixture of styrene block copolymers comprising elastomeric block; tackifying resins (S) having a softening temperature of >= 80[deg] C; and tackifying resins (L) having a softening temperature of = 50[deg] C. The mixture of styrene block copolymers: consists of triblock copolymer consisting of e.g. styrene-isoprene-styrene; and diblock copolymer consisting of e.g. styrene-isoprene. Multilayer film comprises at least two thin material layers bonded together by a layer that has a thickness of less than 10 mu m and is made of an adhesive composition. The adhesive composition comprises: 30-60% of mixture of styrene block copolymers comprising at least one elastomeric block; 10-60% of tackifying resins (S) having a softening temperature of >= 80[deg] C; and 5-35% of tackifying resins (L) having a softening temperature of = 50[deg] C. The mixture of styrene block copolymers: consists of 5-75% of at least triblock copolymer consisting of styrene-isoprene-styrene, styrene-isoprene/butadiene-styrene, styrene-butadiene-styrene, styrene-ethylene/butylene-styrene and styrene-ethylene/propylene-styrene; and 25-95% of diblock copolymer consisting of styrene-isoprene, styrene butadiene isoprene, styrene isoprene butadiene, styrene-butadiene, styrene-ethylene/butadiene and styrene-ethylene-propylene, where the total content of overall styrene units of the mixture is 10-40%. An independent claim is included for manufacturing the multilayer film comprising coating a first thin material layer with the adhesive composition, where the composition, rendered flowable by heating to an appropriate temperature, is extracted by a coating device without contact with the thin layer in the form of continuous layer, and laminating a second thin material layer on the first thin material layer.</p> |
