Paper sacks are generally made from a sheet of paper that is folded into pleats. The bottom of the sack is then glued or stapled shut. In Istanbul, paper sacks are manufactured by a number of companies. Some of the more well-known manufacturers include Güney Kimya, Kütahya Porselen, and Sasa Paper. Güney Kimya is one of the leading manufacturers of paper sacks in Istanbul. The company has been in business since 1978 and has a well-established reputation. Güney Kimya produces a wide range of paper sacks, including those for food, chemicals, and other products. Kütahya Porselen is another well-known manufacturer of paper sacks in Istanbul. The company was founded in 1975 and specializes in the production of paper sacks for food and other products. Kütahya Porselen is one of the largest producers of paper sacks in Turkey. Sasa Paper is a relatively new company, having been founded in 2006. However, the company has quickly become a leading manufacturer of paper sacks in Istanbul. Sasa Paper produces paper sacks for a variety of products, including food, chemicals, and other materials.