Biodegradable resin composition, biodegradable nonwoven fabric and preparation method thereof

• Main Authors: HAN, TAE-HWAN, JUNG, MIN-HO, YOON, KIULL, SONG, BO-SEOK, AHN, JEE-SOO, SIM, EUN-JUNG
• Format: Patent
• Language: Chinese; English
• Published: 16.05.2024
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BRAIDING; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; ORGANIC MACROMOLECULAR COMPOUNDS; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRIMMINGS; WADDING

The present invention relates to a biodegradable resin composition, to a biodegradable nonwoven fabric, and to a process for preparing the same. Specifically, the biodegradable resin composition according to an embodiment of the present invention comprises a polyhydroxyalkanoate (PHA) resin comprising a 4-hydroxybutyrate (4-HB) repeat unit; and a fluidizing agent, wherein the melt flow index (MFI) measured at 190 DEG C and 2.16 kg according to ASTM D1238 is 5 g/10 minutes or more. Thus, it is environmentally friendly by virtue of its excellent biodegradability and biocompatibility, is capable of producing high-quality spun-bonded nonwoven fabrics or staple fiber nonwoven fabrics by virtue of its excellent productivity and processability, and is capable of readily controlling its properties such as viscosity suitable for the process, leading to enhanced productivity and processability.