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发明授权
CN104946144B 聚硅氧烷类粘合带 有权

聚硅氧烷类粘合带
摘要：
本发明涉及聚硅氧烷类粘合带。本发明提供对被粘物为轻剥离，可以抑制粘合力的经时上升，可以经时保持轻剥离的粘合力，并且即使经时保存后也可以达到轻剥离的聚硅氧烷类粘合带。本发明的聚硅氧烷类粘合带的特征在于，在基材薄膜的至少一个面侧具有含有聚硅氧烷类聚合物和聚硅氧烷类剥离剂的聚硅氧烷类粘合剂层，初始粘合力为0.01～0.10N/25mm，下式(1)的值为80以下：(粘合力A)/(粘合力B)×100(1)，粘合力A：粘贴到玻璃上并在85℃下保存48小时后对玻璃的粘合力，粘合力B：将在基材薄膜的一个面侧具有不含有聚硅氧烷类剥离剂的聚硅氧烷类粘合剂层的粘合带粘贴到玻璃上并在85℃下保存48小时后对玻璃的粘合力。
摘要（英）：

The invention relates to a polysiloxane adhesive tape. The invention provides a polysiloxane adhesive tape which can be slightly stripped from an adherend and can restrain gradual rising of adhesive force, always maintains adhesive force of the slight strip, and can be slightly stripped even though after ongoing storage. The polysiloxane adhesive tape is characterized in that at least a surface of a base material film is provided with a polysiloxane adhesive layer containing polysiloxane polymer and a polysiloxane stripping agent, initial adhesive force is 0.01-0.10 N/25 mm, the value of the following formula (1): (adhesive force A)/(adhesive force B)*100 is lower than 80, wherein the adhesive force A is adhesive force when the tape is stored for 48 h at the temperature of lower than 85 DEG C after being adhered on glass, the adhesive force B is adhesive force when the adhesive tape which is provided with the polysiloxane adhesive layer on a surface of the base material film is stored for 48 h at the temperature of lower than 85 DEG C after being adhered on glass, the polysiloxane adhesive layer not containing the polysiloxane stripping agent.

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