| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester-based double-sided adhesive tape that uses only a small amount of organic solvent, is environmentally friendly, is excellent in economy and usability, and also is excellent in adhesive property, retention property and repulsion resistance, because it uses a polyester-based adhesive, without the use of an expensive silicone-based adhesive, a petroleum-based acrylic adhesive, or the like, and the molecular weight of the polyester used in a polyester-based adhesive is, in general, low as compared with the acrylic polymer used in an acrylic adhesive, and which allows the preparation of a coating liquid (adhesive solution) of high polymer concentration.SOLUTION: A double-sided adhesive tape formed of a polyester-based adhesive composition containing at least a polyester obtained by condensation polymerizing a dicarboxylic acid component and a diol component, and a tackifier, is characterized in that the gel fraction in the adhesive layer is 15 wt.% or more and less than 40 wt.%. |
