Invention Grant
- Patent Title: Method for molding recycled EPS using powder adhesive and steam
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Application No.: US14775273Application Date: 2014-03-11
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Publication No.: US09643343B2Publication Date: 2017-05-09
- Inventor: Ajit Ranade , Kate Piscopo
- Applicant: SONOCO DEVELOPMENT, INC.
- Applicant Address: US SC Hartsville
- Assignee: Sonoco Development, Inc.
- Current Assignee: Sonoco Development, Inc.
- Current Assignee Address: US SC Hartsville
- Agency: Miller, Matthias & Hull LLP
- International Application: PCT/US2014/023190 WO 20140311
- International Announcement: WO2014/164676 WO 20141009
- Main IPC: C08J9/33
- IPC: C08J9/33 ; B29B17/00 ; B29C67/20 ; B29C43/02 ; B29C44/44 ; B29C35/04 ; C08J9/236 ; B29C35/16 ; B29K105/04 ; B29K25/00 ; B29K105/26

Abstract:
A method is provided of molding recycled EPS and other suitable expanded bead materials using a powder adhesive and steam. The method allows for molding EPS parts with over 5% and up to 100% recycled content. The method involves using an adhesive to fuse the regrind EPS particles under pressure from steam. The adhesive may be in powder form and preferably comprises small particles having a high surface area per unit weight and high static so the adhesive powder sticks to the surface of the regrind EPS particles during a dry blending step.
Public/Granted literature
- US20160023379A1 Method for Molding Recycled EPS Using Powder Adhesive and Steam Public/Granted day:2016-01-28
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