The invention provides a biaxially oriented polyester film, which exhibits excellent transparency, is easily subjected to secondary processing, is an environmentally friendly polyester film, and has little variations in physical properties in the machine direction, and a production method therefor. The biaxially oriented polyester film is formed of a polyester resin composition containing particles and 50% by weight or more of a polyester resin composed of biomass-derived ethylene glycol and fossil fuel-derived dicarboxylic acid units, wherein at least one surface of the biaxially oriented polyester film meets requirements (1) to (3): (1) a number of fine protrusions each having a height of less than 3 nm per area of 410.sup.12 m.sup.2 is 250-600; (2) a number of fine protrusions each having a height of 3 nm or more per area of 410.sup.12 m.sup.2 is 300-600; and (3) an arithmetic mean height Sa is 0.010-0.025 m.

A halogen-free modified high-filling recyclable plastic board is provided in this disclosure, which includes a substrate layer and a printed layer and a protective layer disposed sequentially on the substrate layer from bottom to top. Raw materials of the substrate layer include, by weight in percent, 20 to 25% of PEAT resin, 70 to 75% of stone powder, 0.5 to 0.8% of chain extender, 1 to 2% of white mineral oil, 3 to 6% PE, and 0.4 to 0.8% stearic acid. The plastic board according to the present disclosure is formed using a hot press process, without glue bonding and with good integrity; and the manufactured board is large in surface tension, its surface is easy to be processed and a substrate layer thereof has good compatibility with a printed layer and a protective layer, which can be recycled as a whole.