Laminated light-blocking decorative articles

Patent metadata

Field	Value
Publication number	US-11802369-B2
Application number	US-202217883857-A
Country	US
Kind code	B2
Filing date	Aug 9, 2022
Priority date	Dec 19, 2019
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

Laminated light-blocking decorative articles are prepared by applying an aqueous foamed opacifying composition to a non-woven fabric, drying, laminating a decorative fabric to the resulting dry foamed opacifying layer, and densifying that layer to have a thickness that is at least 20% less than before densifying. This operation can be carried out so that non-woven fabric, decorative fabric, and aqueous foamed opacifying composition are supplied in a single-pass, in-line operation to make any desired quantity of a laminated light-blocking decorative article. The applied aqueous foamed opacifying composition has 35%-70% solids and a foam density of 0.1-0.5 g/cm 3 . It is composed of (a) porous particles, (b) a binder material, (c) two or more additives comprising at least one foaming surfactant and at least one foam stabilizer, (d) an aqueous medium, and (e) at least 0.0001 weight % of an opacifying colorant that absorbs electromagnetic radiation having a wavelength of 380-800 nm.

First claim

The invention claimed is:

1. A laminated light-blocking decorative article comprising:
a decorative fabric having a face side and a back side, a dry foamed opacifying layer, and a non-woven fabric having a face side and a back side, wherein the decorative fabric is laminated on its back side to the dry foamed opacifying layer that is disposed on the back side of the non-woven fabric,
the dry foamed opacifying layer being present at a dry coverage of less than or equal to 1000 g/m 2 , and comprising:
(a) porous particles in an amount of at least 0.1 weight % and up to and including 35 weight %, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of at least 2 μm and up to and including 50 μm and a porosity of at least 20 volume % and up to and including 70 volume %;
(b′) a matrix material that is derived from a (b) binder material, which (b′) matrix material Is present in an amount of at least 10 weight % and up to and including 80 weight %,
(c) two or more additives in an amount of at least 0.0001 weight % and up to and including 50 weight $%, the two or more additives comprising at least one foaming surfactant and at least one foam stabilizer,
(d) an aqueous medium in an amount of less than 5 weight %, and
(e) an opacifying colorant in an amount of at least 0.002 weight % and up to and including 2 weight %, which opacifying colorant being a different material from the (a) porous particles, (b) binder material, and (e) two or more additives, and which opacifying colorant absorbs electromagnetic radiation having a wavelength of at least 380 nm and up to and including 800 nm,
all amounts of (a) porous particles, (b′) matrix material, (c) two or more additives, and (e) opacifying colorant being based on the total weight of the dry foamed opacifying layer.

2. The laminated light-blocking decorative article of claim 1 , wherein the non-woven fabric is a blended fabric.

3. The laminated light-blocking decorative article of claim 1 , wherein the non-woven fabric is a spunlace non-woven fabric.

4. The laminated light-blocking decorative article of claim 1 , wherein the non-woven fabric has a basis weight of at least 0.5 oz/yd 2 (16.95 g/m 2 ) and up to and including 25 oz/yd 2 (847.7 g/m 2 ).

5. The laminated light-blocking decorative article of claim 1 , wherein the non-woven fabric is colored.

6. The laminated light-blocking decorative article of claim 1 , wherein the decorative fabric is a woven fabric that is patterned, embossed, or printed.

7. The laminated light-blocking decorative article of claim 1 , wherein the decorative fabric is a woven fabric having a repeating design pattern that is woven or embroidered into the decorative fabric.

8. The laminated light-blocking decorative article of claim 1 , wherein the decorative fabric is a double cloth jacquard.

9. The laminated light-blocking decorative article of claim 1 , wherein either the non-woven fabric or the decorative fabric, or both the non-woven fabric and the decorative fabric, comprise an antimicrobial agent, a fire retardant, or a soil release agent, or any combination thereof.

10. The laminated light-blocking decorative article of claim 1 , wherein the laminated decorative article is a window shade.

11. The laminated light-blocking decorative article of claim 1 , wherein the (e) opacifying colorant is a carbon black, a neutral or black pigment or dye other than a carbon black, or a combination of two or more of such materials.

12. The laminated light-blocking decorative article of claim 1 , wherein the (e) two or more additives further comprise one or more of an antimicrobial agent, a fire retardant, or both an antimicrobial agent and a fire retardant.

13. The laminated light-blocking decorative article of claim 1 , wherein the (b) binder material has a glass transition temperature (T g ) of less than 25° C.

14. The laminated light-blocking decorative article of claim 1 , wherein the continuous polymeric phase of the (a) porous particles comprises one or more cellulose polymers, a polyester, a polystyrene, or a combination thereof.

15. The laminated light-blocking article of claim 1 , wherein the (b) binder material comprises a crosslinkable material and a curing agent.

16. The laminated light-blocking article of claim 1 , wherein the at least one foaming surfactant and the at least one foam stabilizer are independently one of the following compounds, or a mixture thereof: ammonium stearate, ammonium palmitate, sodium lauryl sulfate, ammonium lauryl sulfate, ammonium or sodium alkyl sulfosuccinate, disodium stearyl sulfosuccinate, diammonium n-octadecyl sulfosuccinamate, ethoxylated alcohols, a fatty acid soap, and a fatty acid condensation product with an alkylene oxide.

17. The laminated light-blocking decorative article of claim 1 , wherein the (e) opacifying colorant is present in the aqueous foamed opacifying layer in an amount of at least 0.001 weight % and up to and including 0.5 weight %, based on the total weight of the aqueous foamed opacifying layer.

18. The laminated light-blocking decorative article of claim 1 , wherein the (e) opacifying colorant is present solely within the (a) porous particles.

19. The laminated light-blocking decorative article of claim 1 , wherein the aqueous foamed opacifying layer further comprises an adhesive material.

Assignees

• Eastman Kodak Co

Inventors

• Nair Mridula
• Herrick Diane Marie

Classifications

• D06M23/04 Primary

  Processes in which the treating agent is applied in the form of a foam · CPC title

• A47H23/08

  Selection of particular materials · CPC title

• B32B3/30

  characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} · CPC title

• B32B5/022

  Non-woven fabric · CPC title

• B32B5/024

  Woven fabric · CPC title