US 12,246,471 B2
Manufacturing method with improved fragment size and plastic-to-paper ratio
Kasey Fisher, Philadelphia, PA (US); Marko Suput, Lompoc, CA (US); Matthew Spencer, Palatine, IL (US); and Jack G. Winterowd, Puyallup, WA (US)
Assigned to CONTINUUS MATERIALS INTELLECTUAL PROPERTY, LLC, The Woodlands, TX (US)
Filed by Continuus Materials Intellectual Property, LLC, The Woodlands, TX (US)
Filed on Mar. 4, 2024, as Appl. No. 18/595,077.
Application 18/595,077 is a division of application No. 17/541,138, filed on Dec. 2, 2021, granted, now 11,919,200.
Prior Publication US 2024/0208109 A1, Jun. 27, 2024
Int. Cl. B29B 17/02 (2006.01); B29B 17/04 (2006.01); B29C 43/00 (2006.01); B29K 1/00 (2006.01); B29K 101/12 (2006.01); B29K 105/26 (2006.01); B29L 7/00 (2006.01)
CPC B29B 17/02 (2013.01) [B29B 17/04 (2013.01); B29C 43/003 (2013.01); B29B 2017/0224 (2013.01); B29B 2017/0234 (2013.01); B29K 2001/00 (2013.01); B29K 2101/12 (2013.01); B29K 2105/26 (2013.01); B29L 2007/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of manufacturing a fragment, the method comprising:
receiving waste materials that include paper and thermoplastic articles;
refining the received waste materials to a size of about 10″ or less;
processing the refined waste materials through one or more screens to generate a set of fragments having a size between about 2″ and about 10″;
using a wind sifter, separating a subset of the set of fragments responsive to each fragment of the subset having a density below a threshold, the subset comprising paper and plastic fragments;
using a near infrared sorting device, separating the paper fragments from the subset;
refining the separated paper fragments to a size of about 50 mm or less; and
treating the refined separated paper fragments with one or more multifunctional aldehydes or a treatment composition derived from urea and one or more multifunctional aldehydes.