Nanofiber sheet, method for using same, and method for producing same

29:

• A nanofiber sheet comprising:
• a substrate layer;
• and
• a nanofiber layer located on one surface side of the substrate layer and containing nanofibers of a polymer compound, wherein:
• a peripheral edge of the nanofiber layer has a thickness of from 0.1 to 10 μm;
• and
• the nanofiber layer includes at least 3 mm of a gradation region having a thickness that gradually increases inward from the peripheral edge.

34:

• The nanofiber sheet according to claim 29, wherein a planar-view shape of the nanofiber layer is
• a shape including, in its contour, a plurality of curvilinear sections having different curvatures,
• a shape including, in its contour, a plurality of rectilinear sections, or
• a shape including, in its contour, both the curvilinear sections and the rectilinear sections.

35:

• The nanofiber sheet according to claim 29, wherein:
• the nanofiber layer is located adjacent to the substrate layer;
• and
• the substrate layer has air permeability.

36:

• The nanofiber sheet according to claim 29, wherein:
• the nanofiber layer is located adjacent to the substrate layer;
• and
• the substrate layer has, on a surface facing the nanofiber layer, a plurality of depressions or projections each having a width greater than a fiber diameter of the nanofiber.

38:

• The nanofiber sheet according to claim 29, wherein:
• the nanofiber sheet comprises an adhesive layer adherable to a surface of an object;
• and
• the adhesive layer is located between the substrate layer and the nanofiber layer, or on a surface of the nanofiber layer on an opposite side from the substrate layer.

39:

• A method for attaching a nanofiber sheet, wherein the nanofiber sheet comprises:
• a substrate layer;
• and
• a nanofiber layer located on one surface side of the substrate layer and containing nanofibers of a polymer compound,
• a peripheral edge of the nanofiber layer has a thickness of from 0.1 to 10 μm;
• and
• the nanofiber layer includes at least 3 mm of a gradation region having a thickness that gradually increases inward from the peripheral edge, wherein
• the method comprises attaching the nanofiber sheet by placing the nanofiber layer in contact with a surface of an object.

44:

• The method for manufacturing a nanofiber sheet according to claim 43, comprising:
• a path calculation step of determining a movement path for at least either the nozzle or the collecting unit along which the predetermined nanofiber sheet can be formed, the determining being based on a correlation between a factor relating to deposition distribution of the nanofibers and a deposition thickness of the nanofibers;
• and
• a deposition step of depositing the nanofibers, while moving at least either the nozzle or the collecting unit, in accordance with the movement path determined in the path calculation step.

46:

• The method for manufacturing a nanofiber sheet according to claim 44, wherein:
• in a planar view, the predetermined nanofiber sheet includes an inner region surrounded by the gradation region;
• and
• in the path calculation step, the movement path is calculated such that a minimum thickness of the inner region is equal to or greater than a predetermined setting value.

48:

• A device for manufacturing a nanofiber sheet, comprising:
• a nozzle configured to eject a material liquid;
• a counter electrode located in opposition to the nozzle and configured to create an electric field between the nozzle and the counter electrode;
• a collecting unit configured to collect nanofibers produced by electrically stretching the material liquid;
• and
• a mechanism configured to move at least either the nozzle or the collecting unit, wherein:
• the manufacturing device is configured to be capable of depositing the nanofibers onto the collecting unit while moving at least either the nozzle or the collecting unit based on data of a movement path inputted to a control unit;
• and
• data on the movement path determined in the path calculation step of the method for manufacturing a nanofiber sheet according to claim 44 is inputted or is imputable to the control unit.