WINDING CORE AND WINDING CORE MANUFACTURING METHOD

• Main Authors: NAITO YOSHIYASU, NITO TAEKO, TACHIKAWA KOJI, NISHI TAKESHI
• Format: Patent
• Language: English; Korean
• Published: 08.05.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKING; PERFORMING OPERATIONS; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

본 발명은 경량이며, 치수 정밀도와 장척 휨 저감성이 우수한 권취 코어를 제공한다. 스티렌계 수지, 폴리카보네이트, 폴리아릴레이트, 폴리페닐렌옥시드 및 폴리술폰으로부터 선택되는 적어도 1종의 비정성 수지(A), 폴리락트산(B) 및 무기 충전재를 함유하는 수지 조성물을 성형하여 이루어지는 권취 코어로서, 상기 수지 조성물이 상기 비정성 수지(A)를 50~80질량부 및 폴리락트산 수지(B)를 20~50질량부(단, 비정성 수지(A) 및 폴리락트산(B)의 합계는 100질량부) 배합하여 이루어지는 것인 권취 코어. 바람직하게는 무기 충전재(C) 10~40질량부를 더 배합하여 이루어지는 권취 코어이다. The present invention provides a winding core which is lightweight, and which has an excellent dimensional accuracy and deflection reducing property in a long length product. Provided is a winding core obtained by molding a resin composition comprising: at least one type of amorphous resin (A) selected from a styrene resin, a polycarbonate, a polyarylate, a polyphenylene oxide and a polysulfone; a polylactic acid (B); and an inorganic filler; wherein the resin composition includes: from 50 to 80 parts by mass of the amorphous resin (A), and from 20 to 50 parts by mass of the polylactic acid resin (B) (wherein the total amount of the amorphous resin (A) and the polylactic acid (B) is 100 parts by mass). Preferably, the winding core further includes from 10 to 40 parts by mass of the inorganic filler (C).