Hydrophilic Sheet and Process for Producing the Same

摘要

Provided is a hydrophilic fluororesin sheet having significantly improved properties such as filtering performance which includes primary fibers and secondary fibers having a smaller fiber diameter than a fiber diameter of the primary fibers, the secondary fibers crosslinking in each of the primary fibers and/or crosslinking between different primary fibers in such a manner that no knots are formed at crosslinking points, the primary fibers and the secondary fibers including fluororesin fibers including polytetrafluoroethylene [PTFE], wherein a surface of the sheet to which hydrophilization treatment has been applied.

主权项

1. A hydrophilic sheet obtained by applying hydrophilization treatment to a fluororesin sheet,
wherein a surface of the hydrophilic sheet has hydrophilicity such that a water contact angle is 90° or less, and wherein the fluororesin sheet comprises primary fibers and secondary fibers having a smaller fiber diameter than a fiber diameter of the primary fibers, the secondary fibers crosslinking in each of the primary fibers and/or crosslinking between different primary fibers in such a manner that no knots are formed at crosslinking points, the primary fibers and the secondary fibers comprising fluororesin fibers that comprise polytetrafluoroethylene [PTFE].