Thermal spray masking tape

Patent metadata

Field	Value
Publication number	US-9434137-B2
Application number	US-88517810-A
Country	US
Kind code	B2
Filing date	Sep 17, 2010
Priority date	Aug 8, 2008
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

A thermal spray masking tape includes a substrate having a first major surface and a second major surface. The thermal spray masking tape further includes a surface layer overlying the first major surface of the substrate. The surface layer is formed from an elastomer including a liquid silicone rubber.

First claim

What is claimed is:

1. A thermal spray masking tape consisting of:
a substrate having a first major surface and a second major surface, wherein the substrate consists of a cloth including glass fibers, ceramic fibers, carbon fibers, silicate fibers, or any combination thereof;
a surface layer consisting of a silicone rubber layer overlying the first major surface of the substrate, wherein the silicone rubber layer is a liquid silicone rubber (LSR) layer, a high consistency gum rubber layer, or combination thereof;
a mid-layer disposed directly in contact with the substrate and directly in contact with the surface layer, wherein the mid-layer consists of a metal foil, an aramid fiber, a ceramic based sheet, a glass based sheet, a liquid silicon rubber elastomer (LSR), a polyester film, a polyimide film, a polyamide paper, a polyamide felt, or a combination thereof; and
an adhesive layer directly in contact with the second major surface of the substrate.

2. The thermal spray masking tape of claim 1 , wherein the mid-layer is a polyimide film.

3. The thermal spray masking tape of claim 1 , wherein the silicone rubber has a Shore A durometer of about 20 to about 90.

4. The thermal spray masking tape of claim 1 , wherein the surface layer has a thickness of about 5 mils to about 100 mils.

5. The thermal spray masking tape of claim 1 , wherein the substrate has a thickness of about 1 mil to about 10 mils.

6. The thermal spray masking tape of claim 1 , wherein the mid-layer has a thickness of about 0.5 to about 20 mils.

7. A thermal spray masking tape consisting of:
a substrate having a first major surface and a second major surface, wherein the substrate consists of a cloth including glass fibers, ceramic fibers, carbon fibers, silicate fibers, or any combination thereof;
a surface layer consisting of a silicone rubber layer overlying the first major surface of the substrate, wherein the silicone rubber layer is a liquid silicone rubber (LSR) layer, a high consistency gum rubber layer, or combination thereof;
a mid-layer disposed directly in contact with the substrate and directly in contact with the surface layer, wherein the mid-layer consists of a metal foil, an aramid fiber, a ceramic based sheet, a glass based sheet, a liquid silicon rubber elastomer (LSR), a polyester film, a polyimide film, a polyamide paper, a polyamide felt, or a combination thereof;
an adhesive layer directly in contact with the second major surface of the substrate; and
a release liner overlying the adhesive layer.

8. The thermal spray masking tape of claim 7 , wherein the silicone rubber has a Shore A durometer of about 20 to about 90.

9. The thermal spray masking tape of claim 7 , wherein the mid-layer is a polyimide film.

10. The thermal spray masking tape of claim 7 , wherein the mid-layer has a thickness of about 0.5 to about 20 mils.

11. The thermal spray masking tape of claim 1 or claim 7 , wherein the silicone rubber has a density of about 0.035 lbs/cubic inch to about 0.150 lbs/cubic inch.

12. The thermal spray masking tape of claim 1 or claim 7 , wherein the silicone rubber has a number average molecular weight (Mn) of greater than about 25,000.

13. The thermal spray masking tape of claim 1 or claim 7 , having resistance to delamination and degradation after 10 passes of a high velocity oxy fuel (HVOF) coating.

14. The thermal spray masking tape of claim 1 or claim 7 , wherein the surface layer has a thickness of about 5 mils to about 100 mils.

15. The thermal spray masking tape of claim 1 or claim 7 , wherein the substrate has a thickness of about 1 mil to about 10 mils.

Assignees

• Prudhomme Cheryl A
• Holtzinger James
• Goldstein Gene H
• Tzivanis Michael J
• Noonan William E
• Austin Richard J
• Saint Gobain Performance Plastics Corp

Inventors

• Prudhomme Cheryl A
• Holtzinger James
• Goldstein Gene H
• Tzivanis Michael J
• Noonan William E
• Austin Richard J

Classifications

• C09J7/0296

  Chemistry & Metallurgy · mapped topic

• B32B2319/00

  Synthetic rubber · CPC title

• B32B2307/554

  Wear resistance · CPC title

• C09J2483/006

  in the substrate · CPC title

• B32B25/20 Primary

  comprising silicone rubber · CPC title