Liner for cap, cap with liner, container with cap, and method of manufacturing liner for cap

摘要

PROBLEM TO BE SOLVED: To provide a liner for a cap in which a water repellent substance is not used, deterioration of flavor property and falling of a fine material of the liner do not occur and which can obtain sufficient water repellency, a cap with a liner and a method for manufacturing a liner for a cap.SOLUTION: A liner 1 for a cap which is provided in a cap body comprising a top plate part for sealing a mouth of a container body in which a content fluid is filled and a cylindrical peripheral wall part hanging from a circumferential edge of the top plate part. The liner has a water repellent region WR, which has a contact angle with respect to the content fluid larger than that of a flat surface and is configured in such a manner that plural fine salients 3d having a sectional circular arc shape are arranged, at at least a part of a surface exposed to the container body side.SELECTED DRAWING: Figure 1