Method and apparatus for mixing and applying cementitious polyurethane
OwnerPaul Sleightholmeinventor
Life of this patent
Estimating the term…
Abstract
A device and method device for continuous mixing and laying of cementitious coating onto a substrate. There is a first mixing stage for metering and mixing a first liquid and a second liquid to create a first mix and a second mixing stage for metering and mixing the first mix with aggregate to form a second mix. The first and second mixing stages use flow meters and flow controllers for metering and restricting the flow of the first liquid, the second liquid and aggregate. A controller operatively coupled to the flow meters and flow controllers controls the mixing in a closed-feedback arrangement. A screed box applies the second mix onto the substrate to create a flooring layer. The flooring may be in a food processing plant.
Claims20
A device for continuous mixing and laying of cementitious polyurethane coating onto a substrate comprising:
- a source of a first liquid comprising a resin;
- a source of a second liquid comprising a hardening agent;
- a source of aggregate;
- a first mixing stage comprising liquid flow meters and flow controllers for metering and restricting a flow of the first liquid and the second liquid and a mixer for mixing the first liquid and the second liquid to create a polymer mix;
- a second mixing stage having a dry powder machine with an air lock arranged to blow the aggregate, a mass flow meter for metering the flow of the blown aggregate, and a mixer for mixing the polymer mix with the blown aggregate to form a cementitious polyurethane mix;
- a controller operatively coupled to the liquid flow meters, mass flow meter, and flow controllers for controlling the first and second mixing stages in a closed-feedback arrangement to produce said cementitious polyurethane coating;
- and
- a screed box to apply the cementitious polyurethane mix onto the substrate to create said cementitious polyurethane coating of a predetermined thickness.
A method of continuously mixing and laying cementitious polyurethane coating onto a substrate with an automated device, comprising the steps of:
- loading a first liquid comprising a resin within the device;
- loading a second liquid comprising a hardening agent within the device;
- loading aggregate within the device;
- automatedly metering and restricting a flow of the first liquid and the second liquid at a first mixing stage comprising liquid flow meters and flow controllers then mixing the liquids to create a polymer mix;
- automatedly metering and restricting a flow of the polymer mix at a first mixing stage comprising liquid flow meters and flow controllers then mixing the liquids to create a polymer mix;
- using a dry powder machine with an air lock to blow the aggregate, metering the flow of the blown aggregate with a mass flow meter, and mixing the polymer mix with the blown aggregate at a second mixing stage to form a cementitious polyurethane mix;
- using a controller operatively coupled to the liquid flow meters, mass flow meter, and flow controllers to control the first and second mixing stages in a closed-feedback arrangement to produce said cementitious polyurethane mix;
- and
- dispensing the cementitious polyurethane mix onto the substrate using a screed box to create the cementitious polyurethane coating of a predetermined thickness.
Dependencies are inferred from the claim text.