公开(公告)号：US20220111570A1

公开(公告)日：2022-04-14

申请号：US17480674

申请日：2021-09-21

申请人： Corumat, Inc.

发明人： Michael WAGGONER ,  Gregory J. TUDRYN ,  Zack KONDO

IPC分类号： B29C44/34 ,  B32B7/022 ,  B32B5/20 ,  B32B27/36 ,  B29C44/24 ,  C08J5/18 ,  C08J9/12

摘要： The present invention provides a continuous process for solid-state expansion of a biopolymer, e.g., polylactic acid, which can be used to manufacture reduced-density thermoplastic materials with improved physical and thermal properties. By incorporating multiple stages of heating into the process as a means to regulate heat flux, unprecedented control of microstructure and crystallinity can be achieved. Thermoplastic sheets with the distinct cellular characteristics imparted by the process disclosed herein were found to be thicker and stronger than materials prepared by conventional processes. Thermoforming sheets with such characteristics enabled the production of light-weight, thermally-stable, compostable products that resist warping, and are thus suitable for a range of industrial applications.

公开(公告)号：US20240300153A1

公开(公告)日：2024-09-12

申请号：US18508040

申请日：2023-11-13

申请人： Corumat, Inc.

发明人： Michael WAGGONER ,  Gregory J. TUDRYN ,  Zack KONDO

IPC分类号： B29C44/34 ,  B29C44/24 ,  B29K67/00 ,  B29K105/04 ,  B29K105/16 ,  B32B5/20 ,  B32B7/022 ,  B32B27/36 ,  C08J5/18 ,  C08J9/12

CPC分类号： B29C44/348 ,  B29C44/24 ,  B29C44/3415 ,  B29C44/3453 ,  B32B5/20 ,  B32B7/022 ,  B32B27/36 ,  C08J5/18 ,  C08J9/122 ,  B29K2067/046 ,  B29K2105/041 ,  B29K2105/16 ,  B32B2307/54 ,  B32B2307/542 ,  B32B2307/546 ,  B32B2307/718 ,  B32B2307/72 ,  B32B2307/732 ,  B32B2439/70 ,  C08J2203/06 ,  C08J2367/04

摘要： The present invention provides a continuous process for solid-state expansion of a biopolymer, e.g., polylactic acid, which can be used to manufacture reduced-density thermoplastic materials with improved physical and thermal properties. By incorporating multiple stages of heating into the process as a means to regulate heat flux, unprecedented control of microstructure and crystallinity can be achieved. Thermoplastic sheets with the distinct cellular characteristics implied by the process disclosed herein were found to be thicker and stronger than materials prepared by conventional processes. Thermoforming sheets with such characteristics enabled the production of light-weight thermally-stable, compostable products that resist warping, and are thus suitable for a range of industrial applications.

公开(公告)号：US20220073956A1

公开(公告)日：2022-03-10

申请号：US17480672

申请日：2021-09-21

申请人： Corumat, Inc.

发明人： Michael WAGGONER ,  Gregory J. TUDRYN

IPC分类号： C12P7/56 ,  C08J11/10 ,  C08J11/14 ,  C12P5/02 ,  B29B17/02

摘要： A method for deriving value from a mixed waste feedstock can include receiving a mixed waste feedstock including at least a reduced density biopolymer material and an organic feedstock. At least one of a fluid or a material that releases liquids during degradation is added to the mixed waste feedstock. The reduced density biopolymer material is separated, via density separation, from the mixed waste feedstock. The reduced density biopolymer material has a specific gravity below a specific gravity threshold. The reduced density biopolymer material separated from the mixed waste feedstock as a result of the separating is recovered.