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

Claim 15:
16. A computer-implemented method comprising:
sending, by a processor and to a displacement-type capacitive sensor coupled to the processor, an instruction to measure a capacitance of a composite material board placed underneath the displacement-type capacitive sensor located on a production line on which the composite material board is manufactured, wherein the composite material board is a roofing coverboard manufactured at least in part using plastic content and cellulose content of a waste stream;
determining, by the processor, based on the determined capacitance, an equivalent thickness of the plastic content having a dielectric constant by comparing the capacitance of the composite material board to a known capacitive response of one or more thicknesses of the plastic content, wherein the equivalent thickness is less than a thickness of the composite material board;
calculating, by the processor, a proportion of the cellulose or plastic content in the composite material board;
comparing, by the processor, the proportion to a specification of the composite material board; and
responsive to the proportion being within or not within the specification, sending, to a user interface coupled to the processor, an indication that the composite material board respectively meets or fails to meet the specification.