The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2012
Filed:
Sep. 24, 2007
Paul E. Thomas, Terre Haute, IN (US);
Timothy L. Clark, Sullivan, IN (US);
Paul E. Thomas, Terre Haute, IN (US);
Timothy L. Clark, Sullivan, IN (US);
Tredegar Film Products Corporation, Richmond, VA (US);
Abstract
Embodiments of a thin web comprising a plurality of channels extending through the film are disclosed. The channels are in a substantially closed position but are capable of being in an open position to allow flow from the female side through the film to the male side. In certain applications, a greater pressure on the female side than the male side is capable of opening the channels. Embodiments may also include a thin web comprising a plurality of three dimensional apertures extending through the plastic film. The apertures may form a substantially closed channel defined by a sidewall and the channels being disposed at an angle greater than 70° with respect to a female side of the film. The thin web may be a plastic film or a thermoplastic film comprising a polyolefin, for example, or any other suitable material. The polyolefin may comprise at least one of polyethylene, polypropylene, low density polyethylene, or high density polyethylene, for example.