公开(公告)号：EP4393998A1

公开(公告)日：2024-07-03

申请号：EP23204690.4

申请日：2023-10-19

申请人： Politechnika Rzeszowska im. Ignacego Lukasiewicza

发明人： Janowski, Grzegorz ,  Fracz, Wieslaw ,  Bak, Lukasz

IPC分类号： C08L67/04

CPC分类号： C08L67/04

摘要： A biodegradable composite comprising a polymer matrix in the form of poly(3-hydroxybutyric acid-co-3-hydroxyvaleric acid) and coffee as a filler, according to the invention, is characterized in that the coffee is in the form of ground used dried grounds with a particle size ranging from 1 µm to 500 µm, and its content in the composite is from 15 to 45 parts by weight, while the content of poly(3-hydroxybutyric acid-co-3-hydroxyvaleric acid) is from 55 to 85 parts by weight.
A method according to the invention is characterized in that from 55 to 85 parts by weight of poly(3-hydroxybutyric acid-co-3-hydroxyvaleric acid) and from 15 to 45 parts by weight of a filler in the form of ground used dried coffee grounds with a particle size of 1 µm to 500 µm are mixed, and then the mixture is dried at a temperature of at most 90°C, after which the mixture is fed to a screw extruder and extruded, and then the extrudates are granulated.

公开(公告)号：EP4276142A1

公开(公告)日：2023-11-15

申请号：EP23165621.6

申请日：2023-03-30

申请人： Politechnika Rzeszowska im. Ignacego Lukasiewicza

发明人： Janowski, Grzegorz ,  Fracz, Wieslaw ,  Bak, Lukasz

IPC分类号： C08J11/06 ,  C08L67/04 ,  C08L101/16 ,  B29B9/00 ,  B29B11/08

摘要： Method according to the invention is characterised in that the biodegradable composite product comprising from 70 to 85 parts by weight of poly(3-hydroxybutyric-co-3-hydroxyvaleric acid) and from 15 to 30 parts by weight of the filler in the form of flax fibers is milled, then the obtained regranulate is dried, and then is plasticized at a temperature from 170 to 190°C and the product is formed

公开(公告)号：EP4454856A1

公开(公告)日：2024-10-30

申请号：EP23204689.6

申请日：2023-10-19

申请人： Politechnika Rzeszowska im. Ignacego Lukasiewicza

发明人： Bak, Lukasz ,  Fracz, Wieslaw ,  Janowski, Grzegorz

IPC分类号： B29C48/25 ,  B29C48/285 ,  B29B7/60

摘要： The feed hopper is, according to the invention, characterised in that the mixing arms (4) have a triangular cross-section and have a rake surface inclined with respect to the horizontal plane by an angle from the range of from 10° to 30°, and further, the shaft (2) of the mixer is terminated from below with a brush (5) whose bristles are directed downwards and are arranged in the outlet port (6) of the feed container (1), wherein the bristle tips of the brush (5) protrude from this outlet port (6).