Patent ID: 9532547
Date: 2017-01-03
CPC Classifications: A01K

Claim:
1. An absorbent sheet for pets comprising: an excretion surface on which a pet excretes, a placing surface opposite to the excretion surface, a body outer edge that forms an outer edge of the absorbent sheet, an outward direction from an inner side of the absorbent sheet toward the body outer edge, an inward direction from the body outer edge toward the inside of the absorbent sheet, an absorber, an absorber outer edge that forms an outer edge of the absorber, an absorber outer edge region that includes the absorber outer edge, an absorber central region that is formed inward of the absorber outer edge region in the inward direction, and a coloration region that is visible from the excretion surface side, a liquid-impermeable back sheet that is disposed on the placing surface side, a core layer that is provided in the absorber and has a core layer top surface formed on a side of the core layer facing the excretion surface, a core layer back surface formed on a side of the core layer facing the placing surface, and a core layer side surface between the core layer top surface and the core layer back surface, a first covering sheet that covers at least part of the core layer top surface and has a first covering sheet top surface formed on a side of the first covering sheet facing the excretion surface and a first covering sheet back surface formed on a side of the first covering sheet facing the placing surface, a second covering sheet that covers at least part of the core layer back surface, the second covering sheet is formed to cover the core layer back surface, the core layer side surface and part of the core layer top surface, the first covering sheet has an L* value of 50 or less in the L*a*b* color system and the second covering sheet has an L* value larger than 80 in an L*a*b* color system, wherein: the coloration region has a first coloration region formed in the absorber outer edge region, a second coloration region and a third coloration region, wherein the second coloration region has a visually different appearance than the first coloration region, and the third coloration region has a visually different appearance than the first and second coloration regions, a coloration pattern is formed by the first coloration region, the second coloration region and the third coloration region formed in the absorber central region, the first coloration region comprises the second covering sheet, the second coloration region comprises the first covering sheet and the second covering sheet, the third coloration region comprises the first covering sheet, the first covering sheet has a first colored part that is different in coloration from other regions of the absorbent sheet, the first covering sheet top surface has a smaller area than the intermediate sheet top surface, the second covering sheet is formed to cover the core layer back surface, the core layer side surface and part of the core layer top surface, the first coloration region comprises the second covering sheet, the second coloration region comprises the first covering sheet, the second covering sheet and the intermediate sheet, and the third coloration region comprises the intermediate sheet and the first covering sheet, the absorbent sheet for pets further comprising: an intermediate sheet that is disposed between a top sheet and the absorber and has an intermediate sheet top surface formed on a side of the intermediate sheet facing the excretion surface and an intermediate sheet back surface formed on a side of the intermediate sheet facing the placing surface, wherein the intermediate sheet top surface has a smaller area than the core layer top surface.