| 摘要 |
PURPOSE:To obtain a transparent acrylic resin film excellent in a matte characteristic, by mixing a rubber modified acrylic resin composition having a specific melt flow index and talc containing 1wt% or less of particles of which the particle size exceeds a specific one in a specific compounding ratio and subsequently forming the resulting mixture into a film by a melt extrusion process. CONSTITUTION:1-10wt% of talc containing 1wt% or less of particles, of which the particle size exceeds 10mum, is mixed with 99-90wt% of a rubber modified acrylic resin composition of which the melt flow index MI is 0.6-20g/10min and the resulting mixture is formed into a film by melt extrusion process to obtain a transparent matte acrylic resin film. A resin with MI of below 0.6g/10min can not be continuously formed into a film with a thickness of 50mum or less and, when MI exceeds 20g/10min, the stable formation of a film becomes difficult because draw-down from a die at the time of melt extrusion is large. When the content of particles with a particle size exceeding 10mum exceeds 1wt%, the film forming property of the film becomes poor and continuous film formation is difficult. Further, when the content of talc is below 1wt%, sufficient matte effect is not obtained and, when exceeds 10wt%, the film forming property or mechanical strength of the film is lowered. |
