Lining material for pipelines

A method for reinforcing pipelines with a tubular lining, the method comprising:

• a) inserting a tubular lining comprising a lining material having a pre-reversion configuration and a post-reversion configuration wherein said lining material in the pre-reversion configuration is capable of being turned inside out so as to obtain the post-reversion configuration, the tubular lining structured for a reversion into a pipeline having an inner surface, said tubular lining including:
• i) a layer of an impervious material at an exterior circumference of the tubular lining in the pre-reversion configuration;
• ii) a reinforcing tubular jacket having first and second sheets of high tensile strength and/or high modulus fibers, said first sheet having two spaced apart first sheet edges, said second sheet having two spaced apart second sheet edges;
• iii) wherein said first and second sheets overlap at two locations;
• iv) the two overlap locations including a first sheet overlap wherein a length of the first sheet overlaps a length of the second sheet such that a surface of one of the first sheet edges is adjacent a surface of the second sheet;
• v) said two overlap locations including a second sheet overlap that is spaced away from the first sheet overlap, said second sheet overlap including a length of the first sheet that overlaps a length of the second sheet such that a surface of the other of the first sheet edges is adjacent a surface of the second sheet;
• vi) wherein a length of the first sheet extends between the two overlap locations;
• vii) wherein a length of the second sheet extends between the two overlap locations, and wherein the two overlap locations are situated at diametrically opposed locations of the tubular lining;
• and
• viii) the two overlap locations permitting expansion to take place during installation wherein the lining moves from the pre-reversion configuration to the post-reversion configuration;
• ix) wherein in said pre-reversion configuration each of the sheets is folded only at the two sheet overlap locations, forming a fold at each of the overlap locations and a substantially flat configuration of the lining, the said sheet overlap locations providing reinforcement for the lining at the said folds, enabling fibers to remain intact at the said folds when the tubular lining is in the pre-reversion configuration and when the tubular lining in the pre-reversion configuration is moving to the post-reversion configuration;
• b) disposing said reinforcing tubular jacket at a relative interior of said layer of impervious material prior to said reversion;
• c) performing a reversion of the tubular lining via fluid pressure, resulting in the post-reversion configuration and application of the tubular lining material to an inner surface of the pipeline with a binder interposed between the pipeline and the tubular lining material;
• d) disposing said reinforcing tubular jacket at a relative exterior of said layer of impervious material in the post-reversion configuration via said reversion;
• and
• e) advancing the tubular lining within the pipeline via said performing of said reversion.

A tubular lining for reinforcing a pipeline comprising:

• a) a lining having two configurations, a pre-reversion configuration and a post-reversion configuration, wherein said lining in the pre-reversion configuration is operable to be turned inside out so as to obtain the post-reversion configuration;
• b) the pre-reversion configuration of the lining including:
• i) an outer layer having an outer circumference, wherein the outer layer is made of an absorbent material, has an absorbent interior surface, and has a waterproof and/or air impervious coating on an exterior surface of the outer layer;
• ii) a reinforcing tubular jacket ofhigh tensile strength and/or high modulus fibers positioned within the outer layer;
• iii) the reinforcing tubular jacket having a first jacket layer with an upper surface, a lower surface, and first and second ends, wherein the first end is folded over the upper surface and extends a first distance towards the second end, and the second end is folded over the upper surface and extends a second distance towards the first end, and wherein the first and second ends do not touch and are free ends;
• iv) the reinforcing tubular jacket having a second jacket layer having a third end and a fourth end, the second jacket layer partially encircling the first jacket layer and positioned above the first and second ends with the third end folded to extend a third distance under the lower surface of the first jacket layer and the fourth end folded to extend a fourth distance under the lower surface of the first jacket layer, and wherein the third and fourth ends do not touch and are free ends;
• v) the reinforcing tubular jacket having opposing overlapped areas in the pre-reversion configuration that are diametrically opposed, each of the opposing overlapped areas including four layers of material, and the reinforcing tubular jacket having an area in between said opposing overlapped areas that has two layers of material;
• and
• vi) wherein in said pre-reversion configuration each of the reinforcing tubular first and second jacket layers is folded at the opposed overlapped areas, forming a fold at each of the overlapped areas in a generally flat configuration of the lining, wherein the opposed overlapped areas provide reinforcement for the reinforcing tubular jacket when folded;
• and
• c) the post-reversion configuration of the lining including the outer layer surrounded by the reinforcing tubular jacket that includes the opposed overlap areas, and wherein the waterproof and/or air impervious exterior surface of the outer layer is an innermost layer in the post-reversion configuration.

A tubular lining for reinforcing a pipeline comprising:

• a) a lining having two configurations, a pre-reversion configuration and a post-reversion configuration, wherein said lining in the pre-reversion configuration is operable to be turned inside out so as to obtain the post-reversion configuration;
• b) the pre-reversion configuration including,
• i) an absorbent outer layer having an outer circumference in the pre-reversion configuration, the absorbent outer layer having a waterproof and/or air impervious coating on an exterior surface of the outer layer;
• ii) an absorbent inner layer having an inner circumference;
• iii) a reinforcing tubular jacket of high tensile strength and/or high modulus fibers positioned between the outer layer and encircling the inner layer, the reinforcing tubular jacket having diametrically opposed overlap locations;
• iv) the reinforcing tubular jacket having a first jacket layer that partially encircles the inner layer, the first jacket layer having an upper surface, a lower surface, and first and second ends, wherein the first end is folded over the upper surface and over the inner layer extending a first distance towards the second end, wherein the second end is folded over the upper surface and over the inner layer extending a second distance towards the first end, and wherein the first and second ends do not make contact with one another;
• v) the reinforcing tubular jacket having a second jacket layer having third and fourth ends, wherein the second jacket layer partially encircles the first jacket layer, the second jacket layer positioned above the first and second ends of the first jacket layer with the third end folded to extend a third distance under the lower surface of the first jacket layer and under the inner layer, and the fourth end folded to extend a fourth distance under the lower surface of the first jacket layer and under the inner layer, and wherein the third and fourth ends do not make contact with one another;
• and
• vi) the reinforcing tubular jacket having diametrically opposing overlapped areas, one of the opposing overlapped areas including the first and third ends and the other of the opposing overlapped areas including the second and fourth ends;
• vii) a binder on an absorbent interior surface of the outer layer, on the inner layer and on the reinforcing tubular jacket;
• and
• (c) the post-reversion configuration of the lining including the outer layer surrounded by the reinforcing tubular jacket that includes opposing overlap areas, and the reinforcing tubular jacket surrounded by the inner layer, and wherein the waterproof and/or air impervious exterior surface of the outer layer is an innermost layer in the post reversion configuration.

A method of reinforcing a pipe comprising:

• a) providing a tubular lining that has two configurations, a pre-reversion configuration and a post-reversion configuration, said tubular lining including in the pre-reversion configuration:
• i) an absorbent outer layer having an outer circumference, the absorbent outer layer having a waterproof and/or air impervious coating on an exterior surface of the outer layer;
• ii) an absorbent inner layer having an inner circumference;
• iii) a reinforcing tubular jacket of high tensile strength and/or high modulus fibers positioned between the outer layer and the inner layer, the reinforcing tubular jacket encircling the inner layer;
• iv) the reinforcing tubular jacket having a first jacket layer that partially encircles the inner layer with first and second free ends that do not make contact, and a second jacket layer that partially encircles the first jacket layer with third and fourth free ends that do not make contact;
• v) the reinforcing tubular jacket having opposing overlapped areas, one of the opposing overlapped areas including the first and third ends and the other of the opposing overlapped areas including the second and fourth ends;
• and
• vi) a binder on an absorbent interior surface of the outer layer, on the inner layer and on the reinforcing tubular jacket;
• b) inserting the tubular lining into a pipe;
• c) inverting the tubular lining under pressure to effect change from the pre-reversion configuration to the post-reversion configuration, wherein the binder of the inner layer is moved into contact with an inner surface of the pipe, and wherein the opposing overlapped areas enable expansion of the reinforcing tubular jacket to facilitate moving the inner layer into contact with an inner surface of the pipe;
• and
• d) curing the binder while the lining is in the post-reversion configuration, wherein the inner layer and reinforcing tubular jacket become firm with structural and pressure resistance enabling the tubular lining to function as a passageway.

A tubular lining for reinforcing a pipeline comprising:

• a) a lining having two configurations, a pre-reversion configuration and a post-reversion configuration, wherein said lining in the pre-reversion configuration is operable to be turned inside out so as to obtain the post-reversion configuration;
• b) the pre-reversion configuration of the lining including:
• i) an outer layer having an outer circumference in the pre-reversion configuration, wherein the outer layer is made of an absorbent material, has an absorbent interior surface, and has a waterproof and/or air impervious coating on an exterior surface of the outer layer in the pre-reversion configuration;
• ii) an absorbent inner layer having an inner circumference;
• iii) a reinforcing tubular jacket with high tensile strength and/or high modulus fibers positioned between the outer layer and encircling the inner layer;
• iv) the reinforcing tubular jacket having a first jacket layer that partially encircles the inner layer, the first jacket layer having an upper surface, a lower surface, and first and second ends, wherein the first end is folded over the upper surface and over the inner layer extending a first distance towards the second end, wherein the second end is folded over the upper surface and over the inner layer extending a second distance towards the first end, and wherein the first and second ends do not make contact with one another;
• v) the reinforcing tubular jacket having a second jacket layer with third and fourth ends, wherein the second jacket layer partially encircles the first jacket layer, the second jacket layer positioned above the first and second ends of the first jacket layer with the third end folded to extend a third distance under the lower surface of the first jacket layer and under the inner layer, and the fourth end folded to extend a fourth distance under the lower surface of the first jacket layer and under the inner layer, and wherein the third and fourth ends do not make contact with one another;
• vi) the reinforcing tubular jacket have diametrically opposing overlapped areas, each of the opposing overlapped areas including four layers of material, and the reinforcing tubular jacket having an area in between said overlapping areas that has two layers of material;
• and
• vii) a binder that impregnates the absorbent interior surface of the outer layer, the inner layer and the reinforcing tubular jacket;
• and
• c) wherein in the post-reversion configuration the outer layer is surrounded by the reinforcing tubular jacket that still includes opposing overlapped areas, and the reinforcing tubular jacket is surrounded by the inner layer.