Tube for Air Blown Installation and Tube Cable Using the Same
Disclosed is a tube for air blown installation and a tube cable using the same. The tube includes an outer layer made of polyethylene; and an inner layer co-extruded on an inner side of the outer layer and made of a mixture of polyethylene and siloxane, wherein the inner layer has a static coefficient of friction of 0.05 to 0.20, wherein the inner and outer layers respectively have a thickness equal to or less than 0.8 mm, and wherein no damage is caused in the tube having a length of 500 m when a pressure of 10 bars is applied thereto for 24 hours. The tube cable includes a sheath and a plurality of tube bundles. Each tube bundle is substantially identical to the above tube.
1 . A tube for air blown installation, comprising:
an outer layer made of polyethylene; and
an inner layer co-extruded on an inner side of the outer layer and made of a mixture of polyethylene and siloxane,
wherein the inner layer has a static coefficient of friction of 0.05 to 0.20,
wherein the inner and outer layers respectively have a thickness equal to or less than 0.8 mm, and
wherein no damage is caused in the tube having a length of 500 m when a pressure of 10 bars is applied thereto for 24 hours.
2 . The tube for air blown installation according to claim 1 , wherein a content of the siloxane is 0.1 wt % to 5 wt %.
3 . The tube for air blown installation according to claim 1 , wherein the polyethylene is HDPE (High Density Polyethylene).
4 . The tube for air blown installation according to claim 3 , wherein a density of the HDPE is 0.94 to 0.965 g/cm 3 .
5 . A tube cable for air blown installation, comprising:
a sheath; and
a plurality of tube bundles aggregated in the sheath, each tube bundle including an outer layer made of polyethylene and an inner layer co-extruded on an inner side of the outer layer and made of a mixture of polyethylene and siloxane,
wherein the inner layer has a static coefficient of friction of 0.05 to 0.20,
wherein the inner and outer layers respectively have a thickness equal to or less than 0.8 mm, and
wherein no damage is caused in the tube having a length of 500 m when a pressure of 10 bars is applied thereto for 24 hours.
6 . The tube cable for air blown installation according to claim 5 , wherein a content of the siloxane is 0.1 wt % to 5 wt %.
7 . The tube cable for air blown installation according to claim 5 , wherein the polyethylene is HDPE.
8 . The tube cable for air blown installation according to claim 7 , wherein a density of the HDPE is 0.94 to 0.965 g/cm 3 .
9 . The tube cable for air blown installation according to any of claims 5 to 8 , wherein the sheath is made of aluminum or its alloy.