Silicone gel-coated wound dressing

1. A wound dressing product, comprising:

a substrate layer having an first surface and a second surface, and comprising a woven mesh, a nonwoven mesh, a knitted mesh, or a combination of any two or more thereof; and

a tacky silicone coating composition present on said first surface and on said second surface;

wherein

said tacky silicone coating composition is present in a greater weight on said first surface than on said second surface of said substrate layer;

said first surface is more tacky than said second surface;

a tackiness of said first surface as measured by a loop tack test is at from 20% to 100% greater than a tackiness of said second surface; and

an array of apertures extends through said silicone coatings and said substrate layer.

2. The wound dressing product of claim 1 , further comprising a first release sheet adhered to said first surface and a second release sheet adhered to said second surface.

3. The wound dressing product of claim 2 , wherein said second release sheet is adapted to be removed from said second surface more readily than said first release sheet can be removed from said first surface.

4. The wound dressing product of claim 1 , wherein said tacky silicone coating composition comprises a silicone prepolymer composition that has been cured thermally and by ionizing radiation.

5. The wound dressing product of claim 4 , wherein said ionizing radiation is gamma radiation.

6. The wound dressing product of claim 1 , wherein said tacky silicone coating composition is formed from a fluid silicone prepolymer composition comprising a vinyl functional polydimethylsiloxane, a hydrogen functional siloxane, a hydrosilylation catalyst, and a polymerization inhibitor.

7. The wound dressing product of claim 1 , wherein said tacky silicone coating composition is hydrophobic, and does not include hydrophilic components.

8. The wound dressing product of claim 1 , wherein said silicone on said first surface and said second surface is chemically homogeneous.

9. The wound dressing product of claim 1 , which is sterile and packaged in a microorganism-impermeable container.

10. A wound dressing product comprising:

a substrate layer having an first surface and a second surface, and comprising a woven mesh, a nonwoven mesh, a knitted mesh, or a combination of any two or more thereof;

a tacky silicone coating composition present on said first surface and on said second surface; and

first and second release sheets covering said substrate layer and said tacky silicone coating composition on said first surface and said second surface, respectively, and adhered to said surfaces by said tacky silicone coating composition;

wherein the silicone coating composition on said first surface is less tacky than the silicone coating composition on said second surface whereby said first release sheet can be removed from said first surface more readily than said second release sheet can be removed from said second surface;

wherein a tackiness of the second surface as measured by a loop tack test is at from 20% to 100% greater than a tackiness of the first surface; and

wherein an array of apertures extends through said silicone coating composition and said substrate layer.

11. The wound dressing product of claim 10 , wherein said silicone coating composition on said upper surface and said lower surface is chemically homogeneous.

12. The wound dressing product of claim 10 , wherein said silicone coating composition on said first surface and said second surface has been formed by curing of a silicone prepolymer composition.

13. The wound dressing product of claim 10 , which is sterile and packaged in a microorganism-impermeable container.