公开(公告)号：US20240239975A1

公开(公告)日：2024-07-18

申请号：US18414380

申请日：2024-01-16

申请人： Plastic Suppliers, Inc. dba Earthfirst

发明人： Tom Bowden ,  Ed Tweed

IPC分类号： C08J5/18 ,  C08J3/205

CPC分类号： C08J5/18 ,  C08J3/2056 ,  C08J7/08 ,  C08J2367/04

摘要： A method for producing a home compostable biopolyester blown film including a biopolyester and enzymes for improved compostability. Enzymes are added during the extrusion process. To maintain temperature, the blown film process is enclosed and uses a climate control system to maintain temperature and climate within the enclosures.

公开(公告)号：US20240240015A1

公开(公告)日：2024-07-18

申请号：US18414431

申请日：2024-01-16

申请人： Plastic Suppliers, Inc. dba Earthfirst

发明人： Tom Bowden

IPC分类号： C08L67/04 ,  C08J5/18 ,  C08K3/36 ,  C08K5/20

CPC分类号： C08L67/04 ,  C08J5/18 ,  C08K3/36 ,  C08K5/20 ,  C08J2367/04 ,  C08J2467/04 ,  C08L2203/16 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/06

摘要： A compostable blown film article that includes PHA produced in an enclosed blown film process. The blown film may include a wax additive that reduces the stickiness of the film.

公开(公告)号：US20240239976A1

公开(公告)日：2024-07-18

申请号：US18414399

申请日：2024-01-16

申请人： Plastic Suppliers, Inc. dba Earthfirst

发明人： Tom Bowden ,  Ed Tweed

IPC分类号： C08J5/18 ,  B29C48/00 ,  B29C48/08 ,  B29C55/28 ,  B29K67/00 ,  B29K105/00 ,  C08K3/36 ,  C08K5/20 ,  C08L67/04

CPC分类号： C08J5/18 ,  B29C48/0018 ,  B29C48/022 ,  B29C55/28 ,  C08K3/36 ,  C08K5/20 ,  C08L67/04 ,  B29C48/08 ,  B29K2067/00 ,  B29K2105/0005 ,  B29K2105/0094 ,  C08J2367/04 ,  C08J2471/02 ,  C08L2203/16

摘要： A method for producing polyhydroxyalkanoate (PHA) blown film comprising the steps of melting PHA material to form a molten mass with a viscosity ranging from 1400 P to 1600 P at 340° F. to 350° F. (melting point of PHA), forming a bubble from the resulting molten mass and collapsing the bubble to form a film. Furthermore, due to the tight processing window or PHA compared to other blown films, PHA benefits from being produced using an enclosed climate-controlled blown film process as the climate can be controlled within the enclosure to ensure the tight processing window is maintained.

公开(公告)号：US20240239032A1

公开(公告)日：2024-07-18

申请号：US18414440

申请日：2024-01-16

申请人： Plastic Suppliers, Inc. dba Earthfirst

发明人： Tom Bowden ,  Ed Tweed

IPC分类号： B29C48/00 ,  B29C48/14 ,  B29C48/285 ,  B29C48/797 ,  B29C48/92 ,  B29C55/28

CPC分类号： B29C48/0018 ,  B29C48/14 ,  B29C48/288 ,  B29C48/797 ,  B29C48/92 ,  B29C55/28 ,  B29C2791/005 ,  B29C2948/92209 ,  B29C2948/92333 ,  B29C2948/92704 ,  B29C2948/92828

摘要： A system and method for enclosing the blowing area of a biopolymer blown film production process. The enclosure surrounds the blown film tower and includes at least a climate controller to maintain an optimal temperature for the blown film process.