▎ 摘　　要

NOVELTY - Preparing black masterbatch comprises using twin-screw extruder under the condition of specific screw elements and specific screw combinations, where specific screw elements include conveying blocks, conventional kneading blocks, specific multi-head kneading screw blocks and toothed discs, the specific screw combination conditions are as follows: 75/75A, 90/90, 90/90, 90/90, 75/75, 45/45, 45/45, K30/5/75, K30/5/45, K30 /5/45,K30/5/45,K30/5/45L,30/30L,75/75,75/75,90/90,90/90,90/90,90/90,DKB90/7/75 ,DKB90/7/75,DKB90/7/75,DKB90/7/75,DKB90/7/75,K45/5/75L,K90/5/45,60/60,K45/5/75,K90/5 /45,K90/5/45,K90/5/45,30/30L,60/60,60/60,60/60,60/60,K45/5/45,K45/5/45,K45/5 /45,60/60,60/60,C1,C2,C1,CY,90/90,75/75,75/75,75/75,75/75,75/75,75/75,60/60 ,60/60; Among them, K is a conventional kneading thread element, DKB is a special multi-head kneading thread element, L is a reverse thread block, C1 and C2 are toothed discs, and CY is a disc USE - The method is useful for preparing black master batch, which is useful for thin film soft package used for lithium-ion pouch cell, mobile phone, tablet computer, intelligent device, electric bicycle electric, motorcycle and Bluetooth (RTM: Wireless data communications protocol) earphone. ADVANTAGE - The black master batch has low gloss, giving people a soft effect, but also has a uniform distribution of black additives, no graininess, and easy identification of process defects in production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for black masterbatch prepared by above mentioned method.