A cable having a transmission wire, a first metal covering layer, an inner insulating layer, a second metal covering layer, an outer insulating layer, an insulating protective layer, and an outer metal layer and method of making such. The transmission wire, a first metal covering layer , and inner insulating layer extend along a first direction, wherein the first metal covering layer and inner insulating layer cover the transmission wire. The first metal covering layer comprises a first axial end part. The inner insulating layer comprises a second axial end part. The second metal covering layer extends along the first direction and covers the inner insulating layer. The second metal covering layer comprises a third axial end part. The outer insulating layer extends along the first direction and covers the second metal covering layer. The outer insulating layer comprises a fourth axial end part.

A cable having a transmission wire, a first metal covering layer, an inner insulating layer, a second metal covering layer, an outer insulating layer, an insulating protective layer, and an outer metal layer and method of making such. The transmission wire, a first metal covering layer , and inner insulating layer extend along a first direction, wherein the first metal covering layer and inner insulating layer cover the transmission wire. The first metal covering layer comprises a first axial end part. The inner insulating layer comprises a second axial end part. The second metal covering layer extends along the first direction and covers the inner insulating layer. The second metal covering layer comprises a third axial end part. The outer insulating layer extends along the first direction and covers the second metal covering layer. The outer insulating layer comprises a fourth axial end part.

An insulated electric conductor includes a flat or round wire made of one or more electrically conductive materials, the flat or round wire having an exterior surface that is free of an oxide layer; and an insulating layer adhering directly to the oxide-layer-free exterior surface to form a coating around the oxide-layer-free exterior surface, the insulating layer being made of at least one thermoplastic material which provides electrical insulation. The flat or round wire is designed to conduct an electrical current.

Cables are constructed with extruded discontinuities in the cable jacket that allow the jacket to be torn to provide access to the cable core. The discontinuities can be longitudinally extending strips of material in the cable jacket.

The invention relates to a polymer composition comprising a polyethylene and a crosslinking agent, characterized in that the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B.sub.1≤B, wherein B.sub.1 is 0.88, when measured prior to crosslinking according to method ASTM D6248-98; and in that the crosslinking agent is present in an amount which is Z wt %, based on the total amount (100 wt %) of the polymer composition, and Z≤Z.sub.2, wherein Z.sub.2 is 0.30, an article being e.g. a cable, e.g. a power cable, and processes for producing a polymer composition and an article; useful in different end applications, such as wire and cable (W&C) applications.

The invention relates to a polymer composition comprising a polyethylene and a crosslinking agent, characterized in that the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B.sub.1≤B, wherein B.sub.1 is 0.88, when measured prior to crosslinking according to method ASTM D6248-98; and in that the crosslinking agent is present in an amount which is Z wt %, based on the total amount (100 wt %) of the polymer composition, and Z≤Z.sub.2, wherein Z.sub.2 is 0.30, an article being e.g. a cable, e.g. a power cable, and processes for producing a polymer composition and an article; useful in different end applications, such as wire and cable (W&C) applications.

A power cable 1 according to the present invention contains a propylene-based resin in a specific range as an insulating layer 13, and has a specific relationship between the cooling rate X at the time of manufacturing the interface portion in the insulating layer 13 with an inner semiconductive layer 12 and the cooling rate Y at the time of manufacturing the central portion of the insulating layer 13. Thus, not only the surface of the insulating layer 13 but also the inside of the insulating layer 13, the interface portion in the insulating layer 13 with the inner semiconductive layer 12, and the inside thereof are reliably cooled and cured. Therefore, the metal conductor 11 is not displaced from the center of the power cable 1 due to its own weight, and uneven thickness is less likely to occur.

A power cable 1 according to the present invention contains a propylene-based resin in a specific range as an insulating layer 13, and has a specific relationship between the cooling rate X at the time of manufacturing the interface portion in the insulating layer 13 with an inner semiconductive layer 12 and the cooling rate Y at the time of manufacturing the central portion of the insulating layer 13. Thus, not only the surface of the insulating layer 13 but also the inside of the insulating layer 13, the interface portion in the insulating layer 13 with the inner semiconductive layer 12, and the inside thereof are reliably cooled and cured. Therefore, the metal conductor 11 is not displaced from the center of the power cable 1 due to its own weight, and uneven thickness is less likely to occur.

The invention relates to a cable comprising layer(s), which layer(s), is/are obtained from a polymer composition, wherein the polymer composition comprises a polyethylene and a crosslinking agent, wherein the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B.sub.1≤B, wherein B.sub.1 is 0.88, when measured prior to crosslinking according to method ASTM D6248-98; and wherein the crosslinking agent is present in an amount which is Z wt %, prior to crosslinking, based on the total amount (100 wt %) of the polymer composition, and Z≤Z.sub.2, wherein Z.sub.2 is 0.60, the cable, e.g. being a power cable, and processes for producing the cable; the cable useful in different end applications, such as wire and cable (W&C) applications.

The invention relates to a cable comprising layer(s), which layer(s), is/are obtained from a polymer composition, wherein the polymer composition comprises a polyethylene and a crosslinking agent, wherein the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B.sub.1≤B, wherein B.sub.1 is 0.88, when measured prior to crosslinking according to method ASTM D6248-98; and wherein the crosslinking agent is present in an amount which is Z wt %, prior to crosslinking, based on the total amount (100 wt %) of the polymer composition, and Z≤Z.sub.2, wherein Z.sub.2 is 0.60, the cable, e.g. being a power cable, and processes for producing the cable; the cable useful in different end applications, such as wire and cable (W&C) applications.