Method of forming a filament wound pipe liner to be used in concrete pipe construction

Claim 1

THE METHOD OF FORMING AND MOVING A PARTIALLY CURED READY-FOR-USE PIPE-LINER COMPONENT COMPRISING A POLYMERIC RESIN COMPOSITION EMBEDDED FIBER MATERIAL REINFORCEMENT PIPE-LINER COMPONENT TO BE COVERED BY AND INTEGRATED TO A POURED-IN-PLACE CONCRETE COMPONENT WHICH COMPRISES THE FOLLOWING STEPS: STEP (1) FIRST APPLYING A LAYER OF MOLD RELEASE ON THE SURFACE OF A MANDREL AND, SECOND, PLACE FORWARD MOVING STARTING STRANDS OF FIBER REINFORCING MATERIALS IN POSITION FOR SPINNING, AND THEN SPIN, AND LAY, SAID STRANDS AT A SELECTED HELICAL ANGLE AROUND SAID MANDREL OVER SAID LAYER OF MOLD RELEASE UNTIL THE REQUIRED NUMBER OF STRANDS ARE LAID; AND WHILE SPINNING THE FIBER REINFORCING MATERIAL ONTO THE SAID MANDREL, APPLYING POLYMERIZABLE POLYMERIC RESIN COMPOSITION TO COVER SAID SURFACE OF SAID MANDREL AND SAID STRANDS OF FIBER REINFORCEMENT AS THEY ARE BEING SPUN ONTO THE SAID MANDREL; STEP (2) WITH AT LEAST SOME OF SAID FORWARD MOVING STRANDS OF FIBER REINFORCING MATERIAL LAID ONTO SAID MANDREL, PLACE STARTING STRANDS OF SAID FIBER REINFORCING MATERIAL IN SPINNING CROSS-LAY POSITION AT AN EQUAL BUT OPPOSITE HELICAL ANGLE TO SAID FIRST LAID STRANDS, AND SPIN AND LAY, IN REVERSE MOVING LAY SAID STRANDS AT SAID SELECTED CROSS-LAY ANGLE, AND COVER SUBSTANTIALLY ALL OF SAID FIRST LAID FIBER REINFORCING MATERIAL, AND WHILE SPINNING SAID CROSS-LAID STRANDS OF SAID FIBER REINFORCING MATERIAL, CONTINUE APPLYING POLYMERIZABLE POLYMERIC RESIN COMPOSITION TO SUBSTANTIALLY COVER SAID SURFACE OF ALL STRANDS ON SAID MANDREL; STEP (3) WHILE SAID SPINNING OF SAID FIBER REINFORCEMENT STRANDS IS BEING DONE, HEATING THE MANDREL TO PARTIALLY CURE SAID POLYMERIZABLE POLYMERIC RESIN COMPOSITION AND FORM A BONDED AND INTEGRATED PIPELINER STRUCTURE WHEN CURED IN PLACE WITH A POURED-INPLACE CONCRETE COMPONENT; STEP (4) UPON COMPLETION OF SAID PARTIAL CURING, BONDING AND INTEGRATION, PUMP AIR THROUGH THE MANDREL TO ACT AS A CUSHION BETWEEN THE FORMED PARTIALLY CURED PIPE-LINER AND THE MANDREL TO AID IN REMOVING SAID PARTIALLY CURED PIPE-LINER AND SAID AIR ALSO ENTERS SAID PARTIALLY CURED PIPE-LINER WHEREBY SAID AIR ACTS AS A LOAD-BEARING MEDIUM FOR SAID PIPE-LINER TO A DEGREE SUFFICIENT TO AID IN SUPPORTING THE WALL OF SAID PIPE-LINER.

Claim 2

THE METHOD OF FORMING AND MOVING A PARTIALLY CURED READY-FOR-USE PIPE-LINER COMPONENT COMPRISING A POLYMERIC RESIN COMPOSITION EMBEDDED FIBER MATERIAL REINFORCEMENT PIPE-LINER COMPONENT TO BE COVERED BY AND INTEGRATED TO A POURED-IN-PLACE CONCRETE COMPONENT WHICH COMPRISES THE FOLLOWING STEPS: STEP (1) FIRST APPLYING A LAYER OF MOLD RELEASE ON THE SURFACE OF A MANDREL AND, SECOND, PLACE FORWARD MOVING STARTING STRANDS OF FIBER REINFORCING MATERIALS IN POSITION FOR SPINNING, AND THEN SPIN, AND LAY, SAID STRANDS AT A SELECTED HELICAL ANGLE AROUND SAID MANDREL OVER SAID LAYER OF MOLD RELEASE UNTIL THE REQUIRED NUMBER OF STRANDS ARE LAID; AND WHILE SPINNING THE FIBER REINFORCING MATERIAL ONTO THE SAID MANDREL, APPLYING POLYMERIZABLE POLYMERIC RESIN COMPOSITION TO COVER SAID SURFACE OF SAID MANDREL AND SAID STRANDS OF FIBER REINFORCEMENT AS THEY ARE BEING SPUN ONTO THE SAID MANDREL; STEP (2) WITH AT LEAST SOME OF SAID FORWARD MOVING STRANDS OF FIBER REINFORCING MATERIAL LAID ONTO SAID MANDREL, PLACE STARTING STRANDS OF SAID FIBER REINFORCING MATERIAL IN SPINNING CROSS-LAY POSITION AT AN EQUAL BUT OPPOSITE HELICAL ANGLE TO SAID FIRST LAID STRANDS, AND SPIN AND LAY, IN REVERSE MOVING LAY SAID STRANDS AT SAID SELECTED CROSS-LAY ANGLE, AND COVER SUBSTANTIALLY ALL OF SAID FIRST LAID FIBER REINFORCING MATERIAL, AND WHILE SPINNING SAID CROSS-LAID STRANDS OF SAID FIBER REINFORCING MATERIAL, CONTINUE APPLYING POLYMERIZABLE POLYMERIC RESIN COMPOSITION TO SUBSTANTIALLY COVER SAID SURFACE OF ALL STRANDS ON SAID MANDREL; STEP (3) WHILE SAID SPINNING OF SAID FIBER REINFORCEMENT STRANDS IS BEING DONE, HEATING THE MANDREL TO PARTIALLY CURE SAID POLYMERIZABLE POLYMERIC RESIN COMPOSITION AND FORM A BONDED AND INTEGRATED PIPELINER STRUCTURE WHEN CURED IN PLACE WITH A POURED-INPLACE CONCRETE COMPONENT; STEP (4) UPON COMPLETION OF SAID PARTIAL CURING, BONDING AND INTEGRATION, PUMP AIR THROUGH THE MANDREL TO ACT AS A CUSHION BETWEEN THE FORMED PARTIALLY CURED PIPE-LINER AND THE MANDREL TO AID IN REMOVING SAID PARTIALLY CURED PIPE-LINER AND SAID AIR ALSO ENTERS SAID PARTIALLY CURED PIPE-LINER WHEREBY SAID AIR ACTS AS A LOAD-BEARING MEDIUM FOR SAID PIPE-LINER TO A DEGREE SUFFICIENT TO AID IN SUPPORTING THE WALL OF SAID PIPE-LINER.