Packaging is the science, art and technology of enclosing or protecting products for distribution, storage, sale and use. Carton is the name of certain types of containers typically made from paperboard which is also sometimes known as cardboard. Many types of cartons are used in packaging. Sometimes a carton is also called a box. Cartons can be made from many materials: paperboard, various plastics or a composite. Some are "food grade" for direct contact with foods. Many cartons are made out of a single piece of paperboard. Depending on the need, this paperboard can be waxed or coated with polyethylene to form a moisture barrier. This may serve to contain a liquid product or keep a powder. Prepress is the term used in the printing and publishing industries for the processes and procedures that occur between the creation of a print layout and the final printing. The prepress procedure includes the manufacture of a printing plate, image carrier or form, ready for mounting on a printing press, as well as the adjustment of images and texts or the creation of a high-quality print file. In today's prepress shop, the form of delivery from the customer is usually electronic, either a PDF or application files created from such programs as Adobe in Design or QuarkXPress. Press sections in packaging industry cover all the operation occurs between prepress and post press section. We use different verities of board for printing, high quality of ink by which we print and different printing process to print. Postpress is a crucial part of any printing process even though it takes place after the actual printing, since it determines the final look, shape and feel of your printed product.