Flame retardant fastener and method for making the same
AssigneeMinnesota Mining and Manufacturing Company
InventorJames J. Kobe
Life of this patent
Estimating the term…
Abstract
A flame retardant fastener adapted for releasable engagement to a second fastener. A backing layer of the fastener is constructed of a flame retardant polymeric material having an exposed bonding surface and a support surface. A multiplicity of flexible, resilient stem portions extend generally perpendicular to the bonding surface. The distal stem portions have an enlarged head portion located on a distal end of the stem portion. The enlarged head portions have a top surface opposite the distal stem portions and a latching surface opposite the bonding surface. The head portions is disposed to afford movement along different portions of the backing layer and into releasable engagement with the second fastener. A non-flame retardant, pressure sensitive adhesive is applied the support surface.
Claims23
A flame retardant fastener adapted for releasable engagement to a second fastener, comprising:
- a backing layer of a flame retardant polymeric material having an exposed bonding surface and a support surface;
- a multiplicity of flexible, resilient stem portions extending generally perpendicular to said bonding surface, the stem portions comprising a non-flame retardant, polymeric material embedded in the bonding surface, said distal stem portions having an enlarged head portion located on a distal end of said stem portion, said enlarged head region having a top surface opposite said distal stem portions and a latching surface opposite said bonding surface, the head portions being disposed to afford movement along different portions of the backing layer and into releasable engagement with the second fastener;
- and
- a non-flame retardant, pressure sensitive adhesive applied to said support surface wherein the fastener is capable of satisfying the requirements of F.A.R. 25.853(a)(1)(i) vertical flammability test unattached to a substrate.
A flame retardant fastener adapted for releasable engagement to a second fastener, comprising:
- a backing layer of a flame retardant polymeric material having an exposed bonding surface and a support surface;
- a multiplicity of flexible, resilient stem portions extending generally perpendicular to said bonding surface, the stem portions comprising a non-flame retardant, polymeric material embedded in the bonding surface, said distal stem portions having an enlarged head portion located on a distal end of said stem portion, said enlarged head portion having a top surface opposite said distal stem portions and a latching surface opposite said bonding surface, the head portions being disposed to afford movement along different portions of the backing layer and into releasable engagement with the second fastener;
- a non-flame retardant, foam layer bonded to the support surface;
- and
- a non-flame retardant, pressure sensitive adhesive applied to an exposed surface of said foam layer, wherein the foam layer has a thickness less than a thickness of the backing layer, wherein the fastener is capable of satisfying the requirements of F.A.R. 25.853(a)(1)(i) vertical flammability test unattached to a substrate.
A flame retardant fastener adapted for releasable engagement to a second fastener, comprising:
- a backing layer of a polymeric material having an exposed bonding surface and a support surface;
- a multiplicity of flexible, resilient stem portions extending generally perpendicular to said bonding surface, the stem portions comprising a non-flame retardant, polymeric material embedded in the bonding surface, said distal stem portions having an enlarged head portion located on a distal end of said stem portion, said enlarged head portion having a top surface opposite said distal stem portions and a latching surface opposite said bonding surface, the head portions being disposed to afford movement along different portions of the backing layer and into releasable engagement with the second fastener;
- a foam layer bonded to the support surface;
- and
- a pressure sensitive adhesive applied to an exposed surface of said foam layer, wherein a vertically oriented portion of the flame retardant fastener has a burn length of less than 152.4 mm (6 inches), 15 seconds after being exposed to a flame for 60 seconds, wherein the fastener burns for less than 15 seconds after being exposed to a flame for 60 seconds and further wherein the drips may not continue to flame for more than an average of 3 seconds after being exposed to a flame for 60 seconds.
Dependencies are inferred from the claim text.