building was "Dedicated in Recognition of the Distinguished Career of R. Douglas Behr". In 1978, Minigrip was acquired by Signode, Inc. and became a subsidiary of that company. In 1986, Signode and Dow formed a company, namely Zippak, to develop zipper bags for food products. In 1987, ITW acquired Signode, and Minigrip became a subsidiary of ITW. In 1991, ITW acquired Dow's interest in Zippak so that Zippak became a fully owned subsidiary of ITW. Zippak produces plastic zippers for the food packaging market. From the time of inception till today, Flexigrip/Minigrip/Zippak/Dow/Dow Brands have obtained over 300 patents for plastic zippers, zipper bags, and methods and machinery of producing the same. In 1997, Dow Chemical sold the rights of DowBrands, which included Ziploc, to S. C. Johnson for between $1.3 and $1.7 billion. Zip-Pak developed Polypropylene compatible zippers in 2003. Among Ziploc and Zippak's competitors are Presto, a subsidiary of Reynolds, and Pactiv. In 1995, Hefty, one of Reynolds' holdings, came out with a sliding zipper bag. Products Ziploc has expanded their products to more than just sandwich bags. Ziploc products now vary from freezer bags to twist n' loc containers. They have expandable bottom bags which stand on their own. They also have big bags. These bags are used for non-food storage and are as big as 2 ft by 2.7 ft (0.61 m × 0.82 m). The zip n' steam bags are used to cook food in the microwave. The flexible totes made by Ziploc are used for non-food storage and are as big as . Recently, Ziploc has made an evolved line of sandwich and storage bags. All the bags in this line are made with 25% less plastic and are manufactured using wind power. The Ziploc Evolve sandwich bag was so successful that it was deemed the "Best in Show" at the 2010 Best New Product Awards in Canada. Advertising S. C. Johnson and Son uses written, online, interactive, and televised commercial advertising for their product Ziploc. The advertisements run in: Brazil, Germany, Thailand, The United States and many other countries. Ziploc's head of marketing is Scott Heim who handles their multimillion-dollar advertisement campaigns. In 2002, S. C. Johnson & Son launched its biggest campaign in history, a $50 million-plus campaign to launch a new line of disposable tableware/storage products to be marketed under the Ziploc brand name. S. C. Johnson tends to focus their campaigns