Component including a volatile hydrophobic coating and methods including the same

Patent metadata

Field	Value
Publication number	US-12415298-B2
Application number	US-202017928299-A
Country	US
Kind code	B2
Filing date	Dec 23, 2020
Priority date	May 29, 2020
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

Methods of manufacturing a substrate including a component, such as superabsorbent material, having a volatile hydrophobic coating are disclosed. The method can include providing a fluid supply including a liquid and providing a supply of the component. The component can include a volatile hydrophobic coating. The method can include introducing the component to the fluid supply. The method can also include transferring the component in the fluid supply to provide the substrate. The method can further include applying heat to the substrate. The heat can remove the volatile hydrophobic coating from the component.

First claim

What is claimed is:

1. A method of manufacturing a substrate including a component, the method comprising:
providing a fluid supply including a liquid;
providing a supply of the component, the component comprising a volatile hydrophobic coating, wherein the volatile hydrophobic coating comprises from 1% to 35% by weight of the component;
introducing the component to the fluid supply by mixing the component into the fluid supply, the volatile hydrophobic coating including a rate of dissolution such that the volatile hydrophobic coating temporarily protects the component from the liquid of the first fluid supply;
transferring the component in the fluid supply to provide the substrate; and
applying heat to the substrate; the heat removing the volatile hydrophobic coating from the component.

2. The method of claim 1 , wherein the component is a superabsorbent material.

3. The method of claim 2 , wherein the superabsorbent material is a particulate.

4. The method of claim 1 , wherein the fluid supply comprises a foam.

5. The method of claim 4 , wherein the foam comprises the liquid, a gas, and a surfactant.

6. The method of claim 4 , wherein the fluid supply further comprises fibers.

7. The method of claim 1 , further comprising:
dewatering the substrate before applying heat to the substrate.

8. The method of claim 1 , wherein the volatile hydrophobic coating comprises a melting point greater than 25° C.

9. The method of claim 1 , wherein the volatile hydrophobic coating comprises a flash point less than 220° C.

10. The method of claim 1 , wherein the volatile hydrophobic coating comprises a wax.

11. The method of claim 1 , wherein the component is a particulate.

12. The method of claim 1 , wherein the component is a fiber.

13. A method of handling a superabsorbent material, the method comprising:
providing a fluid supply including a liquid, wherein the fluid supply comprises a foam including the liquid, a gas, a surfactant, and wherein fibers are dispersed in the foam;
providing a supply of the superabsorbent material, the superabsorbent material comprising a volatile hydrophobic coating, wherein the volatile hydrophobic coating comprises from 1% to 35% by weight of the superabsorbent material;
introducing the superabsorbent material to the fluid supply, the volatile hydrophobic coating including a rate of dissolution such that the volatile hydrophobic coating temporarily protects the superabsorbent material from the liquid of the first fluid supply; and
applying heat to the superabsorbent material; the heat removing the volatile hydrophobic coating from the superabsorbent material.

14. The method of claim 13 , wherein the volatile hydrophobic coating comprises a melting point greater than 25° C. and a flash point less than 220° C.

Assignees

• Kimberly Clark Co

Inventors

• Qin Jian
• Ranganathan Sridhar

Classifications

• B29B7/7461

  Combinations of dissimilar mixers · CPC title

• B29B7/7409

  with supply of gas · CPC title

• B01F35/71

  Feed mechanisms (with proportioning B01F35/80) · CPC title

• D04H1/732

  by fluid current, e.g. air-lay · CPC title

• D04H1/425

  Cellulose series · CPC title