Functional sheet

Patent metadata

Field	Value
Publication number	US-9439813-B2
Application number	US-201113333975-A
Country	US
Kind code	B2
Filing date	Dec 21, 2011
Priority date	Dec 24, 2010
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

A functional sheet is described, in which a modifier is uniformly and exactly scattered and deposited such that sites where the modifier is deposited and sites where no modifier is deposited are clearly discriminated. The functional sheet is obtained by masking a surface of a sheet containing at least one fibrous layer on the surface by a planar object having a plurality of openings, applying a solution of a modifier from a side of the planar object, and allowing the modifier to deposit onto a whole surface of the sheet exposed to the openings of the planar object, and a functional sheet in which sites where the modifier is deposited form projections and sites where no modifier is deposited form plains in a surface fibrous layer of the functional sheet.

First claim

What is claimed is:

1. A functional sheet, comprising a sheet containing at least one fibrous layer, wherein the sheet is obtained by masking and pressing a surface of the at least one fibrous layer using a planar object having a plurality of openings, wherein convexes are formed in parts of the at least one fibrous layer which are exposed to the plurality of openings of the planar object and plains are formed in parts of the at least one fibrous layer onto which the planar object is pressed, applying a solution of a modifier from a side of the planar object to allow the modifier to deposit onto whole surfaces of the convexes of the sheet and then removing the planar object, wherein portions of the at least one fibrous layer where the modifier was deposited are the convexes and portions of the at least one fibrous layer where no modifier was deposited are the plains, an area of each opening of the plurality of openings of the planar object is in the range of approximately 1.5 mm 2 to approximately 20 mm 2 , and the modifier comprises a 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer, a hyaluronic acid, or a collagen.

2. The functional sheet according to claim 1 , wherein a method for applying the solution of the modifier is to spray the solution of the modifier or to apply the solution of the modifier by using a contact roll.

3. The functional sheet according to claim 1 , wherein the at least one fibrous layer is a fibrous web or a nonwoven fabric.

Assignees

• Terada Hirokazu
• Jnc Corp
• Jnc Fibers Corp

Inventors

• Terada Hirokazu

Classifications

• Y10T428/24331

  including nonapertured component · CPC title

• A61F13/51305 Primary

  having areas of different permeability · CPC title

• B32B3/10

  characterised by a discontinuous layer, i.e. formed of separate pieces of material · CPC title