Fracturing liquid delivery hose for recovery of shale oil and gas, and manufacturing method thereof
Assignee5Elem Material Scientific (Jiangsu) Co., Ltd.
InventorsJinma Wang, Donghui Wang, Shanhong Zhou
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Abstract
The present invention provides a multi-layer hose comprising a cover layer, comprising a first polymer, an enhancement layer comprising woven filaments, and an inner lining, comprising a second polymer, wherein the first polymer and the second polymer are dissimilar. The first polymer is preferably a polymer with good wear resistance properties, e.g., thermoplastic polyurethane (TPU), TPU/PVC, or PVC, or PVC/NBR. The second polymer is preferably a polymer with good chemical resistance properties, e.g., ethylene propylene diene monomer (EPDM) rubber. The present invention also provides a method of manufacturing said multi-layer hose.
Claims8
A method of manufacturing a multi-layer hose, comprising the steps of:
- (1) forming a tubular cover layer and a first adhesive layer from co-extruding a first polymer and a hot-melt adhesive, wherein the first adhesive layer is on an outside surface of the tubular cover layer;
- (2) forming a tubular inner lining and a second adhesive layer from co-extruding a second polymer and a hot-melt adhesive, wherein the first polymer is dissimilar to the second polymer, and the second adhesive layer is on an outside surface of the tubular inner lining;
- (3) weaving a tubular enhancement layer;
- performing the following steps in sequential order:
- (4) bonding the tubular cover layer and the first adhesive layer to the tubular enhancement layer by pulling the tubular cover layer and first adhesive layer inside the tubular enhancement layer, wherein the first adhesive layer is facing the tubular enhancement layer;
- (5) reversing the tubular cover layer and the tubular enhancement layer via a reversal process after the tubular cover layer and the first adhesive layer are bonded to the tubular enhancement layer, wherein the tubular cover layer is on an exterior of the tubular enhancement layer after the reversal process;
- (6) placing the tubular inner lining and the second adhesive layer inside the tubular enhancement layer having the tubular cover layer located on the exterior via the reversal process so that the second adhesive layer is facing the tubular enhancement layer;
- and
- (7) bonding the tubular inner lining and the second adhesive layer to the tubular enhancement layer.
Dependencies are inferred from the claim text.