Embossed thermoplastic material
AssigneeEthyl Corporation
InventorErving A. Leonard, Jr.
Life of this patent
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Abstract
An embossed thermoplastic film characterized in that one surface of the film is provided with a plurality of rows of protuberances having the shape of pyramids with square bases which extend perpendicular to both the longitudinal and the transverse axes of the film. The protuberances are joined at the edge of the bases by flat valley portions which intersect each other at right angles. The embossed film has a low coefficient of friction and increased embossed thickness.
Claims7
An embossed length of thermoplastic film, said film having a plurality of rows of pyramid-shaped protuberances intersecting the longitudinal and transverse axis of said length of film at an angle of about 45 degrees, the rows of protuberances aligned with one each of said axes being separated by continuous flat valleys extending from one side of said film to the other side of said film.
Dependencies are inferred from the claim text.