Protective films and related methods

Patent metadata

Field	Value
Publication number	US-9723940-B2
Application number	US-57696105-A
Country	US
Kind code	B2
Filing date	Oct 12, 2005
Priority date	Oct 12, 2004
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A protective film includes a base layer and a wear layer, the wear layer comprising a UV cured hardcoat resin, and the UV cured hardcoat resin comprising surface modified silica nanoparticles. The protective film may comprise a pressure sensitive adhesive for adhesion to a floor. The protective film may be used, for example, as a protective floor finish.

First claim

What is claimed is:

1. A protective floor film for protecting a top surface of a floor, the protective floor film comprising:
a stretchable base film layer comprising a polymeric resin, wherein the base film layer has a thickness in a range of 1 to 10 mils; and
a wear layer disposed on at least a portion of the base film layer, wherein the wear layer comprises surface modified silica particles having a mean diameter in the range from 1 to 200 nanometers;
wherein the protective floor film is configured to retain 60%-85% of an initial gloss value at a 60° incident angle after 1,590 cycles of a Sand Traffic Test.

2. The protective floor film of claim 1 wherein the polymeric resin is selected from the group consisting of polypropylene, polyacetal, polyamide, polyester, polyolefin, polystyrene, polyvinyl chloride, polyvinylidene chloride, polyurethane, polyurea, an ionomeric blend, and polyethylene terephthalate.

3. The protective floor film of claim 1 wherein the wear layer comprises a UV cured hardcoat resin selected from the group consisting of polyacrylate and polyurethane acrylate.

4. The protective floor film of claim 1 wherein a surface of the base film layer facing the wear layer is corona treated.

5. The protective floor film of claim 1 wherein a primer layer is disposed between the base film layer and the wear layer.

6. The protective floor film of claim 1 , wherein the base film layer is conformable and the wear layer is conformable.

7. The protective floor film of claim 1 , wherein the wear layer further includes a fluorinated additive.

8. The protective floor film of claim 1
wherein the protective floor film is configured to retain 60%-80% of an initial gloss value at a 60° incident angle after 1,590 cycles of a Sand Traffic Test.

9. The protective floor film of claim 1 , wherein the protective floor film is configured to retain 65%-85% of an initial gloss value at a 60° incident angle after 1,590 cycles of a Sand Traffic Test.

10. The protective floor film of claim 1 further comprising a pressure sensitive adhesive layer disposed on at least a portion of the base film layer opposite the wear layer.

11. The protective floor film of claim 10 further comprising a release liner disposed on at least a portion of the pressure sensitive adhesive layer opposite the base film layer.

12. The protective floor film of claim 10 wherein a surface of the base film layer facing the pressure sensitive adhesive layer is corona treated.

13. The protective floor film of claim 10 wherein a primer layer is disposed between the base film layer and the pressure sensitive adhesive layer.

14. A protective floor film for protecting a top surface of a floor, the protective floor film comprising:
a base film layer comprising an ionomeric resin, wherein the base film layer has a thickness in a range of 1 to 10 mils;
a wear layer disposed on at least a portion of the base film layer, wherein the wear layer comprises a UV cured hardcoat resin selected from the group consisting of polyacrylate and polyurethane acrylate, wherein the wear layer comprises surface modified silica particles having a mean diameter in the range from 1 to 200 nanometers; and
a pressure sensitive adhesive layer disposed on at least a portion of the base film layer opposite the wear layer for removably adhering the protective floor film to the top surface of the floor.

15. The protective floor film of claim 14 , further comprising a release liner disposed on at least a portion of the pressure sensitive adhesive layer opposite the base film layer.

16. The protective floor film of claim 14 wherein a surface of the base film layer facing the wear layer is corona treated.

17. The protective floor film of claim 14 wherein a primer layer is disposed between the base film layer and the wear layer.

18. The protective floor film of claim 14 wherein a surface of the base film layer facing the pressure sensitive adhesive layer is corona treated.

19. The protective floor film of claim 14 wherein a primer layer is disposed between the base film layer and the pressure sensitive adhesive layer.

20. A protective floor film for protecting a top surface of a floor, the protective floor film comprising:
a base film layer comprising a polyethylene terephthalate resin, wherein the base film layer has a thickness in a range of 1 to 10 mils;
a wear layer disposed on at least a portion of the base film layer for finishing the top surface of the floor, wherein the wear layer comprises a UV cured hardcoat resin selected from the group consisting of polyacrylate and polyurethane acrylate, wherein the wear layer comprises surface modified silica particles having a mean diameter in the range from 1 to 200 nanometers; and
a pressure sensitive adhesive layer disposed on at least a portion of the base film layer opposite the wear layer for removably adhering the protective floor film to the top surface of the floor.

21. The protective floor film of claim 20 , further comprising a release liner disposed on at least a portion of the pressure sensitive adhesive layer opposite the base film layer.

Assignees

• Paiva Adriana
• Anderson Jeffrey T
• Wong Roy
• Yarmey Susan K
• Strobel Mark A
• Getschel Joel A
• Everaerts Albert I
• King Gregory F
• Brady John T
• Fansler Duane D
• Kumar Kanta
• Malmer Jeffrey D
• Perez Mario A
• Strobel Deborah A
• Thompson Wendy L
• Palazzotto Michael C
• Gryska Stefan H
• Wang Sharon
• Pekurovsky Mikhail L
• Ellis Mark F
• Stewart Edward G
• Jennings Robert M
• Hofmann Gerald R A
• Gibbens Kelly J
• Damte Gezahegn D
• Yang Jie
• 3M Innovative Properties Co

Inventors

• Paiva Adriana
• Anderson Jeffrey T
• Wong Roy
• Yarmey Susan K
• Strobel Mark A
• Getschel Joel A
• Everaerts Albert I
• King Gregory F
• Brady John T
• Fansler Duane D
• Kumar Kanta
• Malmer Jeffrey D
• Perez Mario A
• Strobel Deborah A
• Thompson Wendy L
• Palazzotto Michael C
• Gryska Stefan H
• Wang Sharon
• Pekurovsky Mikhail L
• Ellis Mark F
• Stewart Edward G
• Jennings Robert M
• Hofmann Gerald R A
• Gibbens Kelly J
• Damte Gezahegn D
• Yang Jie

Classifications

• E04F15/02

  Flooring or floor layers composed of a number of similar elements (of webs E04F15/16) · CPC title

• Y10T428/1452

  Polymer derived only from ethylenically unsaturated monomer · CPC title

• C08J2323/08

  Copolymers of ethene (C08J2323/16 takes precedence) · CPC title

• E04F15/107 Primary

  composed of several layers, e.g. sandwich panels (layered products in general B32B; producing decorative panels or veneers B44C5/04) · CPC title

• C08J2475/00

  Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers · CPC title