Method and apparatus for lining a pipe
AssigneeAxalta Coating Systems IP Co., LLC
InventorsPeter Guest, Geoff Quinton
Life of this patent
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Abstract
A composition for application to a substrate is provided. The composition comprises a base component and an activator component. The base component comprises hydroxyl functional prepolymers and the activator comprises isocyanate prepolymers. The composition further comprises an amount of carbon fibre. The hydroxyl functional prepolymers are formulated to polymerise with the isocyanate prepolymers to form a polymer containing carbon fibre.
Claims18
A method of applying a composition to a pipe, the method comprising the steps of:
- mixing a base component and an activator component to form a mixed composition, wherein the base component comprises hydroxyl functional prepolymers and the activator comprises isocyanate prepolymers, wherein the mixed composition further comprises an amount of carbon fiber, and wherein the hydroxyl functional prepolymers are formulated to polymerize with the isocyanate prepolymers to form a polymer containing carbon fiber;
- applying the mixed composition to the inside of a pipe with an apparatus, wherein the apparatus comprises;
- a first flow path for carrying the base component;
- a second flow path for carrying the activator component;
- a mixer coupled to the first flow path and the second flow path, wherein the mixer is configured to mix the base component and activator component to form the mixed composition;
- an applicator head coupled to the mixer, where the applicator head is configured for rotation about an axis and comprises an applicator hole, wherein the applicator is configured for applying the mixed composition to the inside of the pipe;
- and
- wherein the applicator hole comprises a plurality of the applicator holes spaced along an axial length of the applicator head, wherein the plurality of applicator holes are arranged in a spiral extending around a surface of the applicator head.
An apparatus configured for application of a mixed composition to the inside of a pipe, the apparatus comprising:
- a first flow path for carrying a first component of the mixed composition,
- a second flow path for carrying a second component of the mixed composition,
- a mixer coupled to the first flow path and the second flow path, wherein the mixer is configured to mix the first component and the second component together to form the mixed composition,
- an applicator head coupled to the mixer, the applicator head configured for rotation about an axis, the applicator head comprising an applicator hole, the applicator head and applicator hole configured for applying the mixed composition to the inside of the pipe,
- wherein the applicator head comprises a first end coupled to the mixer, the applicator head comprises a second end distal the first end, and wherein the second end is closed, and
- wherein the applicator hole comprises a plurality of the applicator holes spaced along the axial length of the applicator head, wherein the plurality of applicator holes are arranged in a spiral extending around a surface of the applicator head.
Dependencies are inferred from the claim text.