Main Page | See live article | Alphabetical index Marlex is a trademarked name for "crystalline polypropylene" and "high-density polyethylene" (HDPE). These plastics were invented by Paul Hogan and Robert Banks two research chemists at the Phillips Petroleum company. Marlex was used by Wham-O for their Hula Hoops in the 50s what helped to start a market for this plastic. This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.