Patent ID: 11965737
Assignee: CONTINUUS MATERIALS INTELLECTUAL PROPERTY, LLC
Field: Measurement (Instruments)
Classification: CPC G  B | IPC G

Claim 6:
7. A system comprising:
a displacement-type capacitive sensor probe;
a ground plate located on a production line on which a composite material board is manufactured, wherein the composite material board is a roofing coverboard manufactured at least in part using cellulose and plastic from a waste stream; and
a processor with programmed instructions to:
send, to the displacement-type capacitive sensor probe, an instruction to measure a capacitance of the composite material board placed between the displacement-type capacitive sensor and the ground plate;
determine, based on the determined capacitance, an equivalent thickness of cellulose or plastic in the composite material board by comparing the determined capacitance of the composite material board to a known capacitive response of one or more thicknesses of cellulose or a known capacitive response of one or more thicknesses of plastic, wherein the equivalent thickness is less than a thickness of the composite material board;
calculate a proportion of the cellulose or plastic content in the composite material board, based on the equivalent thickness and the thickness of the composite material board;
compare the proportion to a specification of the composite material board; and
responsive to the proportion being within or not within the specification, send, to a user interface coupled to the processor, an indication that the composite material board respectively passes or fails quality control.