Foam with green tea additive for foam mattresses, pillows and cushions

Patent metadata

Field	Value
Publication number	US-9775444-B2
Application number	US-201615168068-A
Country	US
Kind code	B2
Filing date	May 29, 2016
Priority date	Jun 18, 2007
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A method of making foam imparts antimicrobial and antiodorant qualities to the foam. Green tea powder is added to the polyol raw materials for making memory foam. The green tea memory foam is used to make pillows, cushions and mattresses. Green tea foam in the top layer of a mattress acts as an antiodorant such that less of the chemical smell of the memory foam is perceived by the user. In addition, the bacteria and mold that would otherwise develop in the moist warmer sleeping environment on memory foam are killed by the green tea additive to the foam. Measurable antimicrobial and antiodorant qualities in the green tea foam are achievable by adding green tea powder constituting less than 2% of the weight of the resulting green tea foam. A neck-support contour pillow is made using memory foam that contains green tea and a green dye.

First claim

What is claimed is:

1. A mattress comprising:
a first layer of foam of a first type;
a second layer of foam of a second type disposed above the first layer, wherein the second type of foam contains visco-elastic polyurethane foam and green tea, and wherein the second type of foam has a density of three pounds per cubic foot or greater and an indentation load deflection of six or greater; and
a fabric covering around the mattress.

2. The mattress of claim 1 , wherein the first type of foam is high density (HD) foam.

3. The mattress of claim 1 , wherein the second type of foam is memory foam.

4. The mattress of claim 1 , wherein the green tea constitutes less than 2% of the weight of the second type of foam.

5. The mattress of claim 1 , wherein the second type of foam contains green tea in a form taken from the group consisting of: a powder of green tea leaves, a powder of green tea stems, and a water solution of green tea extract.

6. The mattress of claim 1 , wherein the second type of foam has a stable cell structure that provides sufficient support to prevent a user from bottoming out on the first layer of foam.

7. The mattress of claim 1 , wherein the second layer of foam is a top layer of the mattress upon which a user directly rests.

8. The mattress of claim 1 , wherein the fabric covering directly contacts the second layer of foam.

9. The mattress of claim 1 , wherein the mattress has an overall thickness made up at least 10% by the second layer.

10. The mattress of claim 1 , wherein the second type of foam contains a green dye, and wherein the second type of foam is colored green.

11. A mattress comprising:
a layer of a first foam type;
a layer of memory foam infused with green tea, wherein the layer of memory foam is disposed adjacent to the layer of the first foam type, and wherein the memory foam has a density of three or more pounds per cubic foot and an indentation load deflection of six or more; and
a fabric covering around the mattress.

12. The mattress of claim 11 , wherein the memory foam contains visco-elastic polyurethane foam.

13. The mattress of claim 11 , wherein the first foam type is high density (HD) foam.

14. The mattress of claim 11 , wherein the layer of memory foam is a top layer of the mattress upon which the user directly rests through the fabric covering.

15. The mattress of claim 11 , wherein the memory foam contains a green dye, and wherein the memory foam is colored green.

16. A mattress comprising:
a layer of a first foam type;
a layer of memory foam infused with green tea, wherein the layer of memory foam is disposed adjacent to the layer of the first foam type, and wherein the memory foam has a density of three or more pounds per cubic foot and an indentation load deflection of six or more; and
a covering around the mattress.

17. The mattress of claim 16 , wherein the memory foam is made of visco-elastic polyurethane foam.

18. The mattress of claim 16 , wherein the memory foam becomes softer in the presence of body heat.

19. The mattress of claim 16 , wherein the first foam type is high-density polyurethane (HD) foam.

20. The mattress of claim 16 , wherein the memory foam has a stable cell structure that provides sufficient support to prevent a user from bottoming out on the layer of the first foam type.

Assignees

• Zinus Inc

Inventors

• Oh Suk Kan

Classifications

• A47G9/007

  comprising deodorising, fragrance releasing, therapeutic or disinfecting substances · CPC title

• A47C31/007

  Anti-mite, anti-allergen or anti-bacterial means · CPC title

• A47C27/14

  with foamed material inlays · CPC title

• A47C27/15 Primary

  consisting of two or more layers (A47C27/16 takes precedence) · CPC title

• C08L97/02

  Lignocellulosic material, e.g. wood, straw or bagasse {(manufacture of articles made from lignocellulosic material by dry processes B27N)} · CPC title