NANOFIBER SHEET

• Main Authors: YO GYOKUTEI, TOJO TAKEHIKO, IKEYAMA SUGURU, MUKAI KENTA
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2021
• Subjects: HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS

To provide nanofiber sheets that do not easily follow the unevenness of wrinkles caused by changes in facial expressions when applied on the skin.SOLUTION: Provided is a nanofiber sheet containing nanofiber deposits. The rigidity is 0.1 N/mm or more in the condition that it is moistened to 2,500 mass% with hydrogenated polyisobutene of CAS No. 68937-10-0. The nanofiber sheet satisfies the relation of A≥0.0947B. In the formula, A represents the rigidity (N/mm) of the nanofiber sheet in the condition that a cosmetic containing 5% or more and 100% or less of a non-volatile component is retained, and B represents the frictional energy (N s) of the nanofiber sheet in the condition that a cosmetic containing 5% or more and 100% or less of the non-volatile component is retained.SELECTED DRAWING: Figure 1 【課題】皮膚に貼付した場合に、表情の変化などに起因して発生する皺の凹凸に追従しにくいナノファイバシートを提供すること。【解決手段】ナノファイバの堆積物を含むナノファイバシートである。ＣＡＳ番号６８９３７−１０−０の水添ポリイソブテンで２５００質量％に湿潤させた状態での剛性が０．１Ｎ／ｍｍ以上である。ナノファイバシートはＡ≧０．０９４７Ｂの関係を満たす。式中、Ａは、不揮発成分を５％以上１００％以下含む化粧料を保持させた状態での前記ナノファイバシートの剛性（Ｎ／ｍｍ）を表し、Ｂは、不揮発成分を５％以上１００％以下含む化粧料を保持させた状態での前記ナノファイバシートの摩擦エネルギー（Ｎ・ｓ）を表す。【選択図】図１