Marlex

Marlex is a trademarked name for crystalline polypropylene and high-density polyethylene (HDPE). These plastics were invented by J. Paul Hogan and Robert Banks, two research chemists at the Phillips Petroleum Company.

Interest in the material in the 1950s arose from its high melting point and tensile strength, making it more desirable than the more common form of polyethylene. For example, the medical community in 1958 was eager to use Marlex 50 crystalline polyethylene which softens at 260 °F (127 °C). Objects made of Marlex could be sterilized in high-temperature autoclaves without affecting their form.[1]

Marlex was used by Wham-O for their Hula Hoops in the 1950s, which helped create a market for this form of plastic. It is now used surgically as a reinforcing mesh in inguinal hernia repair.

References

USHER, FRANCIS C. (1 June 1958). "Tissue Reaction to Plastics". AMA Archives of Surgery. 76 (6). doi:10.1001/archsurg.1958.01280240155026. ISSN 0096-6908.

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[1] USHER, FRANCIS C. (1 June 1958). "Tissue Reaction to Plastics". AMA Archives of Surgery. 76 (6). doi:10.1001/archsurg.1958.01280240155026. ISSN 0096-6908.