Venting tape
AssigneeFlexiPak Distributin, LLC
InventorFredric J. Leiter
Life of this patent
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Abstract
A venting tape for use in venting an enclosed article space to be filled with an injected expandable foam material. The venting tape includes a polymeric film having a plurality of minute perforations formed therethrough. The perforations are sized to allow the passage of a gas therethrough yet prevent the passage of expandable foam insulation. The venting tape further includes an adhesive layer on one side of the film in a pattern enabling a substantial portion of the minute perforations to remain uncovered by the adhesive layer.
Claims38
A venting tape for use in venting an enclosed article space to be filled with an injected expandable foam material, the venting tape, comprising:
- an elongated polymeric film having a plurality of minute perforations formed therethrough, the perforations sized to allow the passage of a gas therethrough yet prevent passage of expandable foam insulation, the film also having raised rings formed about the perforations, whereby the tear strength of the film around the perforations is increased;
- and
- an adhesive layer that covers one side of the film wherein the adhesive has been removed from within a substantial portion of the minute perforations.
A method for plugging escape holes associated with an article space to be filled with an expandable foam material, comprising:
- providing a polymeric film;
- forming a plurality of perforations through the film and raised rings about the perforations, the perforations sized to allow the passage of a gas therethrough yet prevent passage of expandable foam insulation, and whereby the rings increase the tear strength of the film around the perforations;
- applying an adhesive layer to one side of the film, the adhesive covering a substantial number of the perforations;
- removing the adhesive from within and over a substantial number of the perforations covered by the adhesive;
- and
- adhering the film over the escape holes of the article.
Dependencies are inferred from the claim text.