EXCREMENT TREATMENT MATERIAL AND METHOD FOR MANUFACTURING THE SAME

• US 20190327930A1
• Filed: 07/09/2019
• Published: 10/31/2019
• Est. Priority Date: 03/24/2017
• Status: Active Grant

• Current Assignee: Daiki Company Limited (DCM Holdings Company Limited)
• Original Assignee: Daiki Company Limited (DCM Holdings Company Limited)
• Inventors: YOSHINAGA, Junji
• Granted Patent: US 11,224,200 B2
• Time in Patent Office: Days
• CPC Class Codes: A01K 1/0152 Litter
• CPC Class Codes: A01K 1/0155 comprising organic material
• CPC Class Codes: A61F 2013/530992 in the form of string or ball instead of sheets
• CPC Class Codes: B01D 2253/20 Organic adsorbents
• CPC Class Codes: B01J 2/003 followed by coating of the granules to prevent the granules sticking together B01J2/30
• CPC Class Codes: Y10T 428/2991 Coated

Abstract

An excrement treatment material includes a plurality of granules that absorb excrement. Each granule includes a granular core portion, and a coating portion. The core portion has a circular cross-section, and has a function of absorbing and retaining the excrement. The coating portion coats the core portion. The coating portion has a function of causing the plurality of granules, which have absorbed the excrement, to adhere to each other. In a cross-section of each granule that is in the same plane as the cross-section of the core portion, a thickness of the coating portion on one side of the core portion is smaller than a thickness of the coating portion on another side of the core portion.

Claims

1. An excrement treatment material comprising a plurality of granules that absorb excrement,

wherein each of the granules includes:

a granular core portion that has a circular cross-section and has a function of absorbing and retaining the excrement; and

a coating portion that is provided so as to coat the core portion, and has a function of causing the plurality of granules, which have absorbed the excrement, to adhere to each other, and

in a cross-section of each of the granules that is in the same plane as the cross-section of the core portion, a thickness of the coating portion on one side of the core portion is smaller than a thickness of the coating portion on another side of the core portion.

2. The excrement treatment material according to claim 1,

wherein the thickness of the coating portion on the one side is less than or equal to half of the thickness of the coating portion on the other side.

3. The excrement treatment material according to claim 2,

wherein the thickness of the coating portion on the one side is 0.5 mm or less, and

the thickness of the coating portion on the other side is 1 mm or more.

4. The excrement treatment material according to claim 1,

wherein the thickness of the coating portion becomes gradually smaller from the other side toward the one side.

5. The excrement treatment material according to claim 1,

wherein a main material of each of the granules is an organic substance.

6. The excrement treatment material according to claim 1,

wherein the core portions do not contain an adhesive material.

7. The excrement treatment material according to claim 1,

wherein the coating portions contain a water-absorbing polymer.

8. The excrement treatment material according to claim 7,

wherein the water-absorbing polymer has an average particle size of 20 μ

m or less.

9. The excrement treatment material according to claim 8,

wherein the water-absorbing polymer has an average particle size of 10 μ

m or less.

10. A method for manufacturing an excrement treatment material including a plurality of granules that absorb excrement, comprising a granule forming step of forming the plurality of granules,

wherein the granule forming step includes:

a core portion forming step of forming granular core portions each having a circular cross-section and having a function of absorbing and retaining the excrement; and

a coating portion forming step of forming coating portions so as to coat the core portions, the coating portions having a function of causing the plurality of granules, which have absorbed the excrement, to adhere to each other, and

in the coating portion forming step, the coating portions are formed such that, in a cross-section of each of the granules that is in a same plane as the cross-section of the core portion, a thickness of the coating portion on one side of the core portion is smaller than a thickness of the coating portion on another side of the core portion.

11. The method for manufacturing an excrement treatment material according to claim 10,

wherein, in the coating portion forming step, the coating portions are formed such that the thickness of the coating portion on the one side is less than or equal to half of the thickness of the coating portion on the other side.

12. The method for manufacturing an excrement treatment material according to claim 11,

wherein, in the coating portion forming step, the coating portions are formed such that the thickness of the coating portion on the one side is 0.5 mm or less and the thickness of the coating portion on the other side is 1 mm or more.

13. The method for manufacturing an excrement treatment material according to claim 10,

wherein, in the coating portion forming step, the coating portions are formed such that the thickness of the coating portion becomes gradually smaller from the other side toward the one side.

14. The method for manufacturing an excrement treatment material according to claim 10,

wherein, in the granule forming step, the plurality of granules whose main material is an organic substance are formed.

15. The method for manufacturing an excrement treatment material according to claim 10,

wherein, in the core portion forming step, the core portions containing no adhesive material are formed.

16. The method for manufacturing an excrement treatment material according to claim 10,

wherein, in the coating portion forming step, the coating portions containing a water-absorbing polymer are formed.

17. The method for manufacturing an excrement treatment material according to claim 16,

wherein the water-absorbing polymer has an average particle size of 20 μ

m or less.

18. The method for manufacturing an excrement treatment material according to claim 17,

wherein the water-absorbing polymer has an average particle size of 10 μ

m or less.