Invention Grant
- Patent Title: Composite product and a process for producing said product
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Application No.: US15760120Application Date: 2016-09-20
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Publication No.: US11370894B2Publication Date: 2022-06-28
- Inventor: Duncan Mayes , Janne Pynnonen , Christopher H West , Douglas J Gardner , Yousoo Han
- Applicant: Stora Enso OYJ , University of Maine System Board of Trustees
- Applicant Address: FI Helsinki; US ME Bangor
- Assignee: Stora Enso OYJ,University of Maine System Board of Trustees
- Current Assignee: Stora Enso OYJ,University of Maine System Board of Trustees
- Current Assignee Address: FI Helsinki; US ME Bangor
- Agency: Greer, Burns & Crain, Ltd.
- International Application: PCT/IB2016/055604 WO 20160920
- International Announcement: WO2017/051310 WO 20170330
- Main IPC: C08J9/34
- IPC: C08J9/34 ; C08J9/00 ; B32B5/14 ; C08J5/06 ; C08J5/04 ; B29B7/90 ; B29B9/14 ; B29C44/34 ; B29C44/44 ; B29K25/00 ; B29K401/00
Abstract:
The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.
Public/Granted literature
- US20180265665A1 A COMPOSITE PRODUCT AND A PROCESS FOR PRODUCING SAID PRODUCT Public/Granted day:2018-09-20
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