| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet agent in which only a backing layer of a support body can be easily peeled when being used.SOLUTION: Provided is a sheet agent that is housed in a packaging vessel. The sheet agent comprises laminating a support body (A) and a hydrous gel layer (B), and is that the support body (A) comprises laminating a backing layer that is composed of a polyvinyl alcohol copolymer in which a decay time in 5°C standing water by the following measuring method is at least 30 seconds, and a moisture hardly permeating layer, and the sheet agent is that the hydrous gel layer (B) comprises being laminated to an opposite side face of a face of the moisture hardly permeating layer in which the backing layer is disposed. (A measuring method of the decay time) (1) One end of a strip test piece of a specific dimension is fixed. (2) A portion in which a length is 30 mm from the other end of the strip test piece is immersed in the 5°C standing water to be retained. (3) That when being drawn up from the standing water, a portion immersed is lost by being dissolved in the standing water, or the portion immersed is torn from a non-immersion portion of the test piece right after being drawn up is made the decay, and the shortest immersion time in which the test piece is performed by [the decay] is made [the decay time]. |
