Polypropylene laminate solid pool cover with recyclability
AssigneePool Cover Corporation
InventorLee Ann Pesta
Life of this patent
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Abstract
A light weight, durable, easily recyclable pool cover includes a fabric covering with reinforcing and attachment straps wherein, the reinforcing and attachment straps are attached to said fabric in a criss-crossed pattern. The fabric covering and the straps are produced from a single polymer consisting of polypropylene. The pool cover is entirely recyclable at end of service life by chopping the pool cover components in a simple machine producing granules useful for injection molding of polypropylene products. The pool cover fabric is produced by subjecting three layers of polypropylene sheet material to heat and pressure forming a strong durable fabric wherein the top layer and bottom layer are a solid fabric and the middle layer is multi-filament mesh of polypropylene threads.
Claims10
A method of producing a light weight, durable, easily recyclable pool cover comprising the steps of:
- providing a fabric covering, and
- attaching a plurality of reinforcing and attachment straps to said fabric covering in a criss-crossed pattern,
- wherein said fabric covering and said plurality of reinforcing and attachment straps are produced only from polypropylene.
A swimming pool cover consisting essentially of:
- a) a fabric covering including
- i) a top layer of solid plastic polypropylene material;
- ii) an intermediate layer of multi-filament mesh including only polypropylene threads;
- said intermediate layer of mesh being coated with a top layer of solid plastic polypropylene material which penetrates said mesh and seals openings in said mesh;
- and
- iii) a bottom layer of solid plastic polypropylene material attached to said intermediate layer of mesh;
- said intermediate layer of mesh being coated with said bottom layer of solid plastic polypropylene material which penetrates said mesh and seals openings in said mesh;
- and
- b) reinforcing and attachment straps in criss-crossed pattern on an outer surface of said top layer.
The method of making a swimming pool cover comprising the steps of:
- permeating a layer of a multi-filament mesh with a polypropylene plastic material to seal openings in said mesh;
- adding to the layer of said multi-filament mesh a top layer of low density, solid plastic polypropylene material;
- adding to the layer of said multi-filament mesh a bottom layer of low density, solid plastic polypropylene material;
- and
- adding to an outer surface of said top layer reinforcing and attaching straps in a criss-crossed pattern for attachment to a perimeter of a pool for covering the pool.
Dependencies are inferred from the claim text.