Printed napped sheet and napped sheet for printing

Patent metadata

Field	Value
Publication number	US-12584256-B2
Application number	US-201816768967-A
Country	US
Kind code	B2
Filing date	Nov 14, 2018
Priority date	Dec 13, 2017
Publication date	Mar 24, 2026
Grant date	Mar 24, 2026

Abstract

Disclosed is a printed napped sheet or a printing sheet including a fabric having a napped surface, wherein the napped surface is printed and has, as measured by a surface roughness measurement in accordance with ISO 25178, an arithmetic mean height (Sa) of a predetermined value or less (e.g., 30 μm or less) in both a grain direction and a reverse grain direction, and the napped surface has a density of peaks (Spd), having a height of 100 μm or more from a mean height, of a predetermined value or less (e.g., 30/432 mm 2 or less) in both the grain direction and the reverse grain direction. Also disclosed is a printed napped sheet wherein the napped surface has a difference (absolute value) in density of peaks (Spd), between the grain direction and the reverse grain direction, of 20/432 mm 2 or less.

First claim

The invention claimed is:

1 . A printed napped sheet, comprising:
a fabric having a napped surface formed by napped fibers having an average fineness of 0.01 to 0.5 dtex, wherein: the fabric includes a first elastic polymer and a second elastic polymer; the first elastic polymer is attached to and restrains the napped fibers; the second elastic polymer is the same as or different from the first elastic polymer and is impregnated into the fabric after attaching the first elastic polymer; a content of the first elastic polymer is 1 to 10 g/m 2 ; the napped surface has a design applied by printing on the napped fibers; and the napped surface has, as measured by a surface roughness measurement in accordance with ISO 25178,
an arithmetic mean height (Sa) of 30 μm or less in both a grain direction and a reverse grain direction,
a density of peaks (Spd) having a height of 100 μm or more greater than the arithmetic mean height (Sa) of 30/432 mm 2 or less in both the grain direction and the reverse grain direction, and
an absolute value of a difference between the density of peaks (Spd) in the grain direction and the density of peaks (Spd) in the reverse grain direction of 20/432 mm 2 or less.

2 . The printed napped sheet according to claim 1 , wherein the napped fibers have an average yarn toughness of 8 to 40 cN·%.

3 . The printed napped sheet according to claim 1 , wherein:
the napped fibers include polyester fibers; and the printing is performed with a disperse dye ink.

4 . The printed napped sheet according to claim 1 , wherein the fabric is a leather-like sheet including a third elastic polymer applied therein.

5 . The printed napped sheet according to claim 1 , wherein the fabric is colored with a pigment applied into internal voids thereof.

6 . A printed napped sheet, comprising:
a fabric having a napped surface formed by napped fibers having an average yarn toughness of 8 to 40 cN·%, wherein: the fabric includes a first elastic polymer and a second elastic polymer; the first elastic polymer is attached to and restrains the napped fibers; the second elastic polymer is the same as or different from the first elastic polymer and is impregnated into the fabric after attaching the first elastic polymer; a content of the first elastic polymer is 1 to 10 g/m 2 , the napped surface has a design applied by printing on the napped fibers; and the napped surface has, as measured by a surface roughness measurement in accordance with ISO 25178,
an arithmetic mean height (Sa) of 30 μm or less in both a grain direction and a reverse grain direction,
a density of peaks (Spd) having a height of 100 μm or more greater than the arithmetic mean height (Sa) of 30/432 mm 2 or less in both the grain direction and the reverse grain direction, and
an absolute value of a difference between the density of peaks (Spd) in the grain direction and the density of peaks (Spd) in the reverse grain direction of 20/432 mm 2 or less.

7 . The printed napped sheet according to claim 6 , wherein:
the fibers include polyester fibers having an average fineness of 0.01 to 0.5 dtex; and the printing is performed with a disperse dye ink.

8 . The printed napped sheet according to claim 6 , wherein the fabric is a leather-like sheet.

9 . The printed napped sheet according to claim 6 , wherein the fabric is colored with a pigment applied into internal voids thereof.

Assignees

• Kuraray Co

Inventors

• Matsuda Daisuke
• Meguro Masashi
• Fujisawa Michinori

Classifications

• D06N2209/067

  Flame resistant, fire resistant · CPC title

• D06N3/14

  with polyurethanes · CPC title

• D06N3/0036 Primary

  Polyester fibres (for elastomeric fibres D06N3/0025) · CPC title

• D01F8/14

  with at least one polyester as constituent · CPC title

• B32B2262/0284

  Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT] · CPC title