Acrylic is a clear or colored plastic that is used in a variety of applications, including as an alternative to glass. You can print QR codes on acrylic sheets using a variety of methods, depending on the type of printer you have. If you have an inkjet printer, you can use regular acrylic paint to print your QR code. If you have a laser printer, you will need to purchase special acrylic-friendly toner cartridges in order to print your QR code onto the sheet.