| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-proof and alkali-proof pressure sensitive adhesive label preventing the label from being peeled from a base material even when the label is subjected to a high-temperature and high-concentration alkali treatment, an acid cleaning treatment as necessary, and further a high-temperature treatment such as 450°C.SOLUTION: A heat-proof and alkali-proof pressure sensitive adhesive label 11 comprises a laminated body including: a fist silicone adhesive layer 13 with the film thickness of 25 μm or more consisting of a silicone adhesive, formed on a heat-proof and alkali-proof base material 12; a second adhesive layer 14 with the film thickness of more than 10 μm and less than 30 μm consisting of an acrylic pressure sensitive adhesive, formed on the first adhesive layer 13; a release sheet 15 formed on the second adhesive layer as necessary; and a surface treatment layer 16 such as a printing layer on an opposite surface of the surface where the adhesive layer of the base material 12 is provided. |
