SHIELDING TAPE WITH MULTIPLE FOIL LAYERS
2 Assignments
0 Petitions
Accused Products
Abstract
A coaxial cable of the present invention comprises a center conductor, a dielectric surrounding the center conductor, a shielding tape surrounding the dielectric, a braided metal surrounding the shielding tape, and an outer jacket surrounding the braided metal. The shielding tape comprises: (i) a first shielding layer bonded to a first separating layer; (ii) a second shielding layer bonded to the first separating layer and a second separating layer; and (iii) a third shielding layer bonded to the second separating layer. The present invention eliminates the potential problem of the outer shielding structures separating and interfering with connector attachment. Furthermore, the use of three or more shielding layers in the shielding tape of the present invention improves the flex life of the shield tape by covering micro-cracks in the metal layers with additional shielding layers, thus reducing signal egress or ingress. Accordingly, the present invention provides cost savings and/or an improvement in shielding performance.
4 Citations
82 Claims
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1-56. -56. (canceled)
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57. A method of manufacturing a coaxial cable, the method comprising:
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surrounding a center conductor with a dielectric; and wrapping a shielding tape around the dielectric, wherein the shielding tape is formed by a method including— subjecting a first surface of a first plastic sheet to a corona discharge to activate the first surface; applying adhesive to at least one of the activated first surface of the first plastic sheet or a first surface of a first metal sheet; laminating the first metal sheet to the first plastic sheet by pressing the first surface of the first metal sheet against the first surface of the first plastic sheet with the adhesive therebetween; subjecting a second surface of the first plastic sheet to a corona discharge to activate the second surface; applying adhesive to at least one of the activated second surface of the first plastic sheet or a first surface of a second metal sheet; laminating the second metal sheet to the first plastic sheet by pressing the first surface of the second metal sheet against the second surface of the first plastic sheet with the adhesive therebetween; subjecting a first surface of a second plastic sheet to a corona discharge to activate the first surface of the second plastic sheet; applying adhesive to at least one of the activated first surface of the second plastic sheet or a first surface of a third metal sheet; laminating the third metal sheet to the second plastic sheet by pressing the first surface of the third metal sheet against the first surface of the second plastic sheet with the adhesive therebetween; subjecting a second surface of the second plastic sheet to a corona discharge to activate the second surface of the second plastic sheet; applying adhesive to at least one of the activated second surface of the second plastic sheet or a second surface of the second metal sheet; and laminating the second metal sheet to the second plastic sheet by pressing the second surface of the second metal sheet against the second surface of the second plastic sheet with the adhesive therebetween. - View Dependent Claims (58, 59, 60, 61, 62, 63, 64, 65, 66, 67)
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68. A method of manufacturing shielding tape, the method comprising:
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exposing a first surface of a first separating layer to a corona discharge; applying adhesive to at least one of the exposed first surface of the first separating layer or a first surface of a first shielding layer; pressing the first surface of the first shielding layer against the first surface of the first separating layer after application of the adhesive; exposing a second surface of the first separating layer to a corona discharge; applying adhesive to at least one of the exposed second surface of the first separating layer or a first surface of a second shielding layer; pressing the first surface of the second shielding layer against the second surface of the first separating layer after application of the adhesive; exposing a first surface of a second separating layer to a corona discharge; applying adhesive to at least one of the first surface of the second separating layer or a first surface of a third shielding layer; pressing the first surface of the third shielding layer against the first surface of the second separating layer after application of the adhesive; exposing a second surface of the second separating layer to a corona discharge; applying adhesive to at least one of the exposed second surface of the second separating layer or a second surface of the second shielding layer; and pressing the second surface of the second shielding layer against the second surface of the second shielding layer after application of the adhesive. - View Dependent Claims (69, 70, 71, 72, 73, 74)
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75. A coaxial cable comprising:
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a conductor; a dielectric surrounding the conductor; a shielding tape surrounding the dielectric, the shielding tape manufactured by a method including; exposing a first surface of a first separating layer to a corona discharge; applying adhesive to at least one of the exposed first surface of the first separating layer or a first surface of a first shielding layer; pressing the first surface of the first shielding layer against the first surface of the first separating layer after application of the adhesive; exposing a second surface of the first separating layer to a corona discharge; applying adhesive to at least one of the exposed second surface of the first separating layer or a first surface of a second shielding layer; pressing the first surface of the second shielding layer against the second surface of the first separating layer after application of the adhesive; exposing a first surface of a second separating layer to a corona discharge; applying adhesive to at least one of the exposed first surface of the second separating layer or a first surface of a third shielding layer; pressing the first surface of the third shielding layer against the first surface of the second separating layer after application of the adhesive; exposing a second surface of the second separating layer to a corona discharge; applying adhesive to at least one of the exposed second surface of the second separating layer or a second surface of the second shielding layer; and pressing the second surface of the second shielding layer against the second surface of the second separating layer after application of the adhesive; a braided metal surrounding the shielding tape; and an outer jacket surrounding the braided metal. - View Dependent Claims (76, 77, 78, 79, 80, 81, 82)
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Specification