Conduit glue bag, conduit glue strips and methods for installing cable in sewer pipe

Abstract

A conduit glue bag which comprises a conduit element and a bag filled with glue fluid which extends over the exterior surface of the conduit, the bag having a zip cord along it and being built in such a manner that after pulling the zip cord, the glue fluid pours out of the bag. Conduit glue strips and methods for installing cable inside a sewer pipe are also described.

1 . Conduit glue bag that comprises at least one conduit element and a bag filled with glue fluid which extends over the exterior surface of said at least one conduit, said bag having a zip cord along it and being built in such a manner that after pulling the zip cord, the glue fluid pours out of the bag.  
     
     
         2 . Conduit glue bag according to  claim 1 , wherein the glue fluid belongs to the acrylate glue family such as elastic silanmodified glue or glasfiber epoxy resin.  
     
     
         3 . Conduit glue bag according to  claim 1 , wherein the conduit is made of some plastic material and the bag is made of polyester felt with inner PE coating.  
     
     
         4 . Conduit glue strip, to be glued against a portion of the internal surface of an underground pipe, made out of at least one conduit glue bag comprising at least one conduit element and a bag filled with glue fluid which extends over the exterior surface of said at least one conduit, said bag having a zip cord along it and being built in such a manner that after pulling the zip cord, the glue fluid pours out of the bag.  
     
     
         5 . Conduit glue strip, to be glued against a portion of the internal surface of an underground pipe, made out of an elongated strip body of soft material with a plurality of canals which extend lengthwise of the pipe, a glue layer which adheres it to the inner surface of the pipe and which is protected with a thin foil or tape in a prior state to installation, wherein the protection foil degrades when hot water is injected inside the canals.  
     
     
         6 . Method for installing a cable in a sewer pipe using a conduit glue strip, 
 the conduit glue strip being made out of at least one conduit glue bag comprising at least one conduit element and a bag filled with glue fluid which extends over the exterior surface of said at least one conduit, the bag having a zip cord along it and being built in such a manner that after pulling the zip cord the glue fluid pours out of the bag,    comprising the following steps: 
 introducing the conduit glue bag inside the sewer pipe;  
 pulling the zip cord of the bag to let the glue fluid pour out over the sewer inner surface and simultaneously pressing the conduit glue bag on the installation position;  
 activating the glue function of the glue fluid by injecting hot water inside the conduit;  
 blowing or pulling micro optical fiber cable into the conduit.  
   
     
     
         7 . Method for installing a cable in a sewer pipe using a conduit glue strip, 
 the conduit glue strip being made out of an elongated strip body of soft material with a plurality of canals which extend lengthwise of the pipe, a glue layer which adheres it to the inner surface of the pipe and which is protected with a thin foil or tape in a prior state to installation,    comprising the following steps: 
 introducing the conduit glue strip into the sewer pipe;  
 degrading the protection foil and activating the glue function of the glue layer by injecting hot water along the conduit strip canals;  
 pressing the conduit glue strip against the inner wall of the sewer pipe;  
 blowing or pulling micro optical fiber cable into the canals.