Patent · US Active

Method and system for separating waste polyurethane foams

US12017383B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignees

Covestro Deutschland AG · DE
RECTICEL ENGINEERED FOAMS BELGIUM · BE

Inventors

Sascha Froebel · Düsseldorf, DE
Torsten Heinemann · Tarragona, ES
Robert Grimm · Port Townsend, US
Katharina Ander · Graz, AT
Franz Siegl · Neusiedl bei Güssing, AT
Jan Willems · Brussels, BE
Isabel Verlent · Wetteren, BE
Joke De Geeter · Wetteren, BE

Key dates

Filing date	Aug 13, 2021
Grant date	Jun 25, 2024
Priority date	—
Expiry date	Aug 13, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/62
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for separating waste polyurethane foams, wherein for each polyurethane sample (1) of a supply stream (2) comprising polyurethane samples (1) from waste at least one respective spectrum (3) is recorded, wherein the at least one respective spectrum (3) is recorded by near-infrared spectroscopy, wherein each polyurethane sample (1) of the supply stream (2) is classified by a classification algorithm (5), which classification algorithm (5) is based on machine learning, based on the respective at least one spectrum (3) into a respective class (8a-e) of at least two classes (8a-e), wherein the supply stream (2) comprising polyurethane samples (1) is separated into at least two streams (11a-e) according to the classification into the respective class (8a-e) and wherein each class (8a-e) corresponds to a type of polyurethane. The invention also relates to a system for separating waste polyurethane foams.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.