General purpose films are made of LDPE and HDPE materials. They are made in three basic forms: tubular, half tubular and flat film for automatic and manual packaging. There can be different sizes with printing in up to six colors. They are used in the wood industry for packaging of furniture, for packaging of Styrofoam, in the baking industry and similar fields. Shrink films shrink under the influence of temperature and are used for packaging of juices and chemical products.