Film
AssigneeNitto Denko Corporation
InventorsShinya KOTAKE, Daisuke MATSUKUMA, Hiroyuki FUJITA
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Abstract
The purpose of the present invention is to provide a film which enables an oil to be held on a surface of an object over a long period and which makes it possible to reduce work costs and equipment construction costs. The film of the present invention includes a base material having a plurality of voids therein and an oil retained in the voids, wherein the voids on one surface of the base material have an average void diameter which is smaller than an average void diameter of the voids present near a thickness-direction center of the base material.
Claims10
A film comprising a base material having a plurality of voids therein and an oil retained in the voids, wherein
- the voids present on one surface of the base material have an average void diameter which is smaller than an average void diameter of the voids present near a thickness-direction center of the base material.
Dependencies are inferred from the claim text.