Pet pad and manufacturing method of pet pad

Patent metadata

Field	Value
Publication number	US-10104866-B2
Application number	US-201415102640-A
Country	US
Kind code	B2
Filing date	Jun 18, 2014
Priority date	Dec 12, 2013
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

Provided are a sheet for pets which contains carbon and has a superior appearance, and a method of manufacturing the sheet for pets. A sheet for pets is provided with a liquid-permeable front surface sheet, a liquid-impermeable back surface sheet, an absorbent layer that contains carbon and is positioned between the front surface sheet and the back surface sheet, and a front surface-side liquid-permeable sheet that is black and is positioned on the front surface sheet-side of the absorbent layer. The front surface-side liquid-permeable sheet is preferably formed from pulp fibers that have been dyed black.

First claim

The invention claimed is:

1. A pet pad comprising:
a liquid permeable top sheet;
a liquid impermeable back sheet;
an absorbent layer containing charcoal, the absorbent layer being disposed between the top sheet and the back sheet; and
a black top side liquid permeable sheet that is disposed on a top sheet side of the absorbent layer.

2. The pet pad according to claim 1 , wherein
the top side liquid permeable sheet is a sheet obtained by making paper with pulp fiber containing black pulp fiber which is stained black.

3. The pet pad according to claim 1 , wherein
a particle diameter of the charcoal is 0.01 mm to 1.0 mm.

4. The pet pad according to claim 1 , wherein
basis weight of the top side liquid permeable sheet is 8 g/m 2 to 50 g/m 2 and air permeability of the top side liquid permeable sheet is 0.01 kPa·s/m to 0.25 kPa·s/m.

5. The pet pad according to claim 1 , wherein
the absorbent layer has an absorbent core including hydrophilic fiber; and
the charcoal is disposed on a top sheet side face of the absorbent core.

6. The pet pad according to claim 5 , wherein
the absorbent layer further includes a highly absorbent resin disposed on the top sheet side face of the absorbent core.

7. A manufacturing method of a pet pad having a liquid permeable top sheet, a liquid impermeable back sheet, an absorbent layer containing charcoal, the absorbent layer being disposed between the top sheet and the back sheet, and a black top side liquid permeable sheet that is disposed on a top sheet side of the absorbent layer, the method comprising:
a core forming step of forming an absorbent core including hydrophilic fiber;
a scattering step of scattering a mixture of charcoal and a highly absorbent resin onto one face of the absorbent core; and
a top side liquid permeable sheet disposing step of disposing the top side liquid permeable sheet on a face of the absorbent layer on which the charcoal and the highly absorbent resin have been applied.

8. The manufacturing method of a pet pad according to claim 7 further comprising, between the scattering step and the top side liquid permeable sheet disposing step, a spraying step of spraying water onto the face of the absorbent layer on which the charcoal and the highly absorbent resin have been applied.

Assignees

• Unicharm Corp

Inventors

• Hasegawa Satoshi
• Sasano Yasuhiro

Classifications

• A01K1/0107

  Cat trays; Dog urinals; Toilets for pets · CPC title

• B32B2307/728

  Hydrophilic · CPC title

• B32B2307/758

  Odour absorbent · CPC title

• B01J20/20

  comprising free carbon; comprising carbon obtained by carbonising processes · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title