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US 2025/0135733 A1Published application
Spiral wound pipe insulation
AssigneeOwens Corning Intellectual Capital, LLC
InventorsMatthew Daniel Gawryla, Mark Edward Mantonya, Paul Edward Shawcross, Christopher James Clements, Benjamin Talbot Padgitt
Life of this patent
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Abstract
A pipe insulation is formed from multiple discrete sheets of fiberglass that are wetted with a binder composition. The sheets are spiral wound around a mandrel in a partially overlapping fashion. The wound sheets are further processed to interface with one another and form a unitary elongated cylinder. The binder in the elongated cylinder is then cured to form the pipe insulation.
Claims24
A method of forming pipe insulation, the method comprising:
- providing a plurality of sheets of insulation material, each sheet comprising a plurality of glass fibers and a binder;
- compressing each sheet of insulation material to have a thickness in the range of about 1.5 mm to about 6.5 mm;
- drying each sheet of insulation material to remove a majority of water therefrom;
- directing each sheet of insulation material toward a mandrel at an approach angle α, wherein α≠90 degrees;
- and
- spiral winding each sheet in a partially overlapping fashion around the mandrel to form an elongated hollow cylinder of the insulation material having a wall thickness in the range of about 10 mm to about 55 mm;
- wherein each sheet of insulation material has a width in the range of about 35 mm to 80 mm;
- wherein each sheet of insulation material has a fiber area weight (FAW) in the range of about 195 g/m2 to about 410 g/m2;
- wherein each sheet of insulation material has a fiber basis weight variation that is in the range of about FAW±50%;
- and
- wherein the binder of each insulation sheet is substantially uncured when the sheet is spiral wound on the mandrel.
8 more elements
Dependencies are inferred from the claim text.