Bonded multilayer manhole liner, method for manufacturing the same, and method of installation
AssigneeMcNeil Technologies, Inc
InventorKathryn M. JONES
Life of this patent
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Abstract
A manhole liner composite for rehabilitating and reinforcing a sewer structure. The liner composite includes a plurality of strips of a bonded liner material. Each of the strips of the bonded liner material comprises first and second structural fiberglass layers. A membrane layer is disposed between the first and second structural fiberglass layers and bonds the first and second structural fiberglass layers to form a unitary, single-piece strip of bonded liner material.
Claims21
A manhole liner composite for rehabilitating and reinforcing a sewer structure, the liner composite includes a plurality of strips of a bonded liner material, each of the strips of the bonded liner material comprising:
- first and second structural fiberglass layers;
- and
- a membrane layer disposed between the first and second structural fiberglass layers and bonding the first and second structural fiberglass layers to form a unitary, single-piece strip of the bonded liner material.
A method for making a manhole liner composite for rehabilitating and reinforcing a sewer structure, the liner composite includes a plurality of layers of a bonded liner composite material, the method comprising the steps of:
- separately feeding the layers of first and second structural fiberglass layers to bonding rollers;
- extruding a melted liquid polymer material by an applicator between and over opposed surfaces of the first and second structural fiberglass layers;
- and
- pressing the first and second structural fiberglass layers and the melted liquid polymer material together to bond the three layers into a single-piece strip of bonded liner composite material.
A method for installing a manhole liner for rehabilitating and reinforcing a sewer structure, the method comprising the steps of:
- manufacturing a strip of a bonded liner composite material;
- cutting the strip of the bonded liner composite material into a plurality of the strips of the bonded liner composite material;
- securing together the strips of the liner material to form the manhole liner composite;
- and
- installing the liner complementary to the underground support structure.
Dependencies are inferred from the claim text.