Cathodic lead insulator
A protective cap for adhesion to a substrate including a substantially flat base sheet, a dome extending outwardly from an obverse side of the base sheet and forming a cavity in the opposite side of the base sheet with the cavity sized for substantially encapsulating a connector. The cap also includes a semi-tubular shield extending outwardly from one side of the base sheet that defines a channel in the opposite side of the base sheet extending from the cavity toward the periphery of the base sheet, and an integrated primer layer comprising a pressure-sensitive adhesive and attached to the reverse side of the base sheet for application to the substrate.
1. A protective cap for adhesion to a substrate, the cap comprising:
a substantially flat base sheet;
a dome extending outwardly from an obverse side of the base sheet and forming a cavity in the opposite side of the base sheet, the cavity sized for substantially encapsulating a connector;
a semi-tubular shield extending outwardly from one side of the base sheet and defining a channel in the opposite side of the base sheet extending from the cavity toward the periphery of the base sheet; and
an integrated primer layer comprising a pressure-sensitive adhesive and attached to the reverse side of the base sheet for application to the substrate, in which the primer layer comprises a polyolefin material and synthetic elastomers.
2. The cap of claim 1 in which the primer layer comprises thermoplastic elastomers and synthetic resins.
3. The cap of claim 1 in which the primer layer is a material selected from the group containing polyolefin and synthetic elastomers.
4. The cap of claim 1 in which the primer layer has a service temperature of between about −30 and 150 degrees F (−35 to 66 degrees C).
5. The cap of claim 1 in which the primer layer has an application temperature of at least about −10 degrees F (−23 degrees C).
6. The cap of claim 1 in which the primer layer has a total thickness from between about 20 and 60 mils (1 and 1.52 mm).
7. The cap of claim 1 in which the primer layer is elastically deformable to about a 0.5 in radius at about −40 F (15.7 radius at −28.9 C).
8. The can of claim 1 in which the primer layer exhibits a dielectric strength of at least about 15 kV.
9. The cap of claim 1 in which the primer layer exhibits a resistivity of at least about 10 8 megohms.
10. The cap of claim 1 wherein the primer layer absorbs less than about 0.05 percent water, by weight of the primer layer.
11. The cap of claim 1 in which the base sheet comprises substantially linear perforations for improved flexibility.
12. The cap of claim 1 wherein the cavity contains a yieldable insulating liquid compound conforming around the connector.
13. The cap of claim 1 further comprising at least one release liner attached thereto, extending along the obverse side of the base.
14. A protective cap tot a connector adapted for adhesion to a substrate, the cap comprising:
a planar base sheet;
an igloo-shaper dome extending outwardly from an obverse side of the base sheet and forming a cavity in the opposite side of the base sheet, the cavity sized fro encapsulating the metal connector;
a semi-tubular shield extending outwardly from one side of the base sheet and defining a channel in the opposite side of the base sheet extending from the cavity toward the periphery of the base sheet, the shield sized for substantially encapsulating a lead extending from the connector;
an integrated primer layer comprising a pressure-sensitive adhesive and attached to the reverse side of the base sheet for application to the substrate; and
an adhesive layer having at least one release line attached thereto, extending alone the obverse side of the base.
15. The cap of claim 1 in which the primer layer is substantially cathodic disbondment resistant.