Bendable splint and molding method thereof

A splint bendable in a curved shape comprising:

• a lower splint having a plurality of first ventilation holes, second ventilation holes, and third ventilation holes formed at a certain interval;
• an upper splint portion extending to an upper side of the lower splint portion;
• and
• an extension splint portion extending to one side of the upper splint portion and having a plurality of extension holes formed at a certain interval;
• wherein the lower splint portion and the upper splint portion are bent into an arc shape by a first bending, and
• wherein the extension splint portion are bent by a second bending to allow a predetermined diameter through plurality of extension holes.

A method of forming a splint bendable in a curved shape comprising:

• a step for cutting a splint member into a predetermined shape according to a treatment portion applied by the splint;
• a step for forming a plurality of extension holes in the extension splint via a perforation process in order to smoothly transform and extend the splint member when the splint member is bent;
• a step for forming a plurality of ventilation holes via a perforation process to allow air to communicate with the outside according to the treatment portion;
• a first bending step for bending the splint member into a predetermined arc shape so as to surround an outer surface of the treatment portion;
• and
• a second bending step for bending the extension splint portion having the extension hole formed thereon to have a different angle or a predetermined diameter.

A method of manufacturing a composite resin comprising:

• a step S110 for powdery processing 28 to 72% by weight of PLA Poly lactic acid), 5 to 20% by weight of PCL (polycaprolactone), 5 to 10% by weight of PBS (polybutylene succinate), 5 to 15% by weight of PBAT (polybutylene adipate-co-terephthalate), 10 to 20% by weight of PVAC (polyvinyl acetate), 2 to 4% by weight of cross-linking agent, 1 to 3% by weight of compatibilizer;
• a step S120 for mixing the powdery processed raw material by using a double blade ribbon blender;
• a step S130 for performing melting-extrusion of the mixed raw material using a twin extruder equipped with a raw material supply device;
• a step S140 for injecting the melt-extruded raw material into a die, and then cooling and drying the strands outputted through the die;
• and
• a step S150 for pelletizing the cooled strand through a cutting machine and packaging the pelletized strand.

A method of manufacturing a sheet by using biodegradable composite resin with enhanced low-temperature processability comprising;

• a step S210 for powdery processing 28 to 72% by weight of PLA (Poly lactic acid), 5 to 20% by weight of PCL (polycaprolactone), 5 to 10% by weight of PBS (polybutylene succinate), 5 to 15% by weight of PBAT (polybutylene adipate-co-terephthalate), 10 to 20% by weight of PVAC (polyvinyl acetate), 2 to 4% by weight of cross-linking agent, and 1 to 3% by weight of a compatibilizer;
• a step S220 for mixing the raw material processed into a powder state with a double blade ribbon blender;
• a step S230 for melting-extrusion of the mixed raw material using a twin extruder equipped with a raw material supply device;
• a step S240 for injecting the melt-extruded raw material into a die and then cooling and drying the strands outputted through the die;
• a step for S250 for melting and extruding the cooled and dried strand using a T-die extruder for sheet manufacturing;
• a step S260 for manufacturing a sheet by rolling the melt-extruded composite resin through the T-die extruder, adjusting a thickness and performing a primary cooling;
• a step for S270 for applying a secondary cooling to the sheet cooled by the primary cooling in a state in which the thickness is adjusted;
• and
• a step S280 for cutting and packaging the sheet cooled by the secondary cooling according to standards.