A reel

Abstract

The present invention relates to a reel ( 10 ) for winding up and unwinding filaments, comprising a circular middle element ( 3 ), circular flanges ( 1,2 ) positioned on either side of said middle element ( 3 ), wherein the diameter of said middle element ( 3 ) is smaller than the diameter of said flanges ( 1,2 ), which middle element ( 3 ) is suitable for winding up and unwinding filaments, wherein said middle element ( 3 ) and flanges ( 1,2 ) are manufactured from a biodegradable polymer.

1 . A reel for winding up and unwinding filaments, comprising a circular middle element, circular flanges positioned on either side of said middle element, wherein the diameter of said middle element is smaller than the diameter of said flanges, which middle element is suitable for winding up and unwinding filaments, characterized in that said middle element and flanges are manufactured from a biodegradable polymer. 
     
     
         2 . The reel according to  claim 1 , characterized in that said biodegradable polymer is selected from the group of polylactic acid, copolymers of L-lactic acid with 0.5-7% D-lactic acid, starch foam and/or blends of 5-40% PLA with a remaining quantity of additional components consisting of the group of starch, PBS, PBAT, PHA, PHB, PVA and PVAc or combinations thereof and with optional addition of colouring agents, nucleants, compatibilizing agents in usual quantities. 
     
     
         3 . The reel according to one or more of the preceding claims, characterized in that the density of said biodegradable polymer lies in the range of 10 g/l and 100 g/l. 
     
     
         4 . The reel according to one or more of the preceding claims, characterized in that said biodegradable polymer complies with the composting standard EN13432. 
     
     
         5 . The reel according to one or more of the preceding claims, characterized in that said reel is made up of two identical halves, both of which halves are connected to each other using a bayonet closure in order to obtain the intended reel. 
     
     
         6 . The reel according to  claim 5 , characterized in that said bayonet closure further comprises a retaining groove. 
     
     
         7 . The reel according to one or more of the  claims 5 - 6 , characterized in that both identical halves are nestable. 
     
     
         8 . The reel according to one or more of the preceding claims, characterized in that said filaments are of the 3-D printing yarn type.