Adhesive tape is used, for example, to fix parts and elements that constitute mobile electronic terminals, cameras, personal computers, household appliances, automobiles and the like. Examples of raw materials used for such limb fixation adhesive tapes include silicone-based adhesives and acrylic-based adhesives. However, in the case of a silicone-based adhesive, it is not economical due to its high cost. On the other hand, in the case of acrylic adhesives, although the cost is low, oil is usually used as a raw material, so there are problems of depletion of oil resources and emission of carbon dioxide due to the disposal treatment.
In recent years, as interest in environmental issues such as global warming has increased, there has been a strong social demand for the use of plant-derived raw materials as an alternative to conventional petroleum-derived raw materials. However, it is difficult to meet the conventional required performance by using a raw material of plant origin, and a tape having a particularly high degree of biomass has the disadvantage of poor adhesiveness.
Therefore, an object of the present invention is to provide an adhesive tape having a high degree of biomass, having a sufficient adhesive force, and also having excellent detachability.
The present adhesive tape has a pressure-sensitive adhesive layer containing a polyester resin, the biomass grade of the pressure-sensitive adhesive layer is 80% by weight or more, the gel content of the pressure-sensitive adhesive layer pressure is 40% by weight and it is a stainless steel plate. Has an adhesive strength of 4 to 14 N/20 mm.