IP Library Granted Patent US 9,296,924
Granted Patent B2
US 9,296,924 · App. 12/495,075 · Granted Mar 29, 2016

Static dissipative release liner

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Quick Facts
Patent No.
US 9,296,924
App. No.
12/495,075
Granted
Mar 29, 2016
Kind
B2
Abstract

A laminate for creating a waterproof system, the laminate including a polymeric layer and a release liner removably attached to the polymeric layer, where the release liner includes a conductive or semi-conductive material. The polymeric layer may also include a prepared surface on a portion thereof, the release liner being positioned over the prepared surface. The prepared surface may include a layer of primer residue or adhesive.

Claims (19)

1. A laminate for creating a waterproof system, the laminate including:

a polymeric roofing article; and

a static dissipative release liner removably attached to the roofing article, where the release liner includes at least a single polymeric film having a conductive or semi-conductive material of carbon black dispersed within said single polymeric film, wherein said polymeric film is in direct contact with the roofing article.

2. The laminate of claim 1 , where the polymeric roofing article is selected from the group consisting of a polymeric membrane panel, a walkway pad, an accessory, a flashing strip, a cover strip, and an attachment strip.

3. The laminate of claim 2 , where the polymeric membrane panel is an EPDM membrane panel.

4. A laminate for creating a waterproof system, the laminate including:

a polymeric roofing article;

a prepared surface on a location of the polymeric roofing article; and

a static dissipative release liner on the prepared surface, where the release liner includes at least a single polymeric film having a conductive or semi-conductive material of carbon black dispersed within said single polymeric film, wherein said polymeric film is in direct contact with said prepared surface.

5. The laminate of claim 4 , where the polymeric roofing article is selected from the group consisting of a polymeric membrane panel, a walkway pad, an accessory, a flashing strip, a cover strip, an adhesive tape and an attachment strip.

6. The laminate of claim 5 , where the polymeric membrane panel is an EPDM membrane panel.

7. The laminate of claim 5 , where the polymeric membrane panel is a thermoplastic membrane panel.

8. The laminate of claim 5 , where the prepared surface includes a layer of primer residue.

9. The laminate of claim 5 , where the prepared surface includes a layer of an adhesive.

10. The laminate of claim 1 , where the prepared surface includes a solid tape applied to the membrane panel.

11. The laminate of claim 4 , where the release liner includes carbon black in an amount from about 5 to about 100 parts by weight carbon black per 100 parts by weight polymer within the layer that includes the carbon black.

12. The laminate of claim 7 , where the panel carries an adhesive layer covering substantially one planar surface of the panel, and where the release liner cover substantially all of the adhesive layer.

13. The laminate of claim 1 , wherein said single polymeric film is black.

14. The laminate of claim 4 , wherein said single polymeric film is black to absorb solar energy to promote adhesive flow of said prepared surface.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 28, 2025
From: HOLCIM TECHNOLOGY LTD
To: AMRIZE TECHNOLOGY SWITZERLAND LLC
Reel/Frame 073030/0406 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 26, 2022
From: FIRESTONE BUILDING PRODUCTS COMPANY, LLC
To: HOLCIM TECHNOLOGY LTD
Reel/Frame 060920/0869 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 19, 2011
From: KALWARA, JOSEPH J; FIELDHOUSE, JOHN W
To: FIRESTONE BUILDING PRODUCTS COMPANY, LLC
Reel/Frame 027083/0953 →