Milliken + Co

David W Martin

Randolph S Kohlman

Brian Callaway

Emily W Michaels

Dennis A Goff

James D Pinson

Gary Lee Hoenshel

A scrim reinforced roofing membrane containing a coated scrim layer, a first membrane layer on the first side of the coated scrim layer, and a second membrane layer on the second side of the coated scrim layer. The coated scrim is fully embedded and encapsulated in the membrane layers. The coated scrim layer contains a scrim fabric which contains a plurality of warp yarns in a first direction and a plurality of weft yarns in a second direction approximately perpendicular to the first direction, where the warp yarns cross the weft yarns at crossing points. The coated scrim also contains a coating which contains polyvinyl acetate and second polymer where the second polymer is fluorocarbon-free. The coating contains less than about 0.01% wt. fluorine and is located along the length of the warp and weft yarns and is located between the warp and weft yarns at the crossing points.

Coated scrim reinforced roofing membrane

A scrim reinforced roofing membrane comprising a coated scrim layer having a first side and a second side and a first polyvinyl chloride layer on the first side of the coated scrim layer. The coated scrim layer contains a scrim fabric which contains a plurality of warp yarns in a first direction and a plurality of weft yarns in a second direction approximately perpendicular to the first direction. The warp yarns cross the weft yarns at crossing points. The scrim fabric has a polyvinyl acetate coating which is located along the length of the warp yarns and the weft yarns and between the warp and weft yarns at the crossing points. The coated scrim is at least partially embedded in the first polyvinyl chloride layer.

A scrim reinforced roofing membrane comprising a coated scrim layer having a first side and a second side and a first TPO layer on the first side of the coated scrim layer. The coated scrim layer contains a scrim fabric which contains a plurality of warp yarns in a first direction and a plurality of weft yarns in a second direction approximately perpendicular to the first direction. The warp yarns cross the weft yarns at crossing points. The scrim fabric has a polyvinyl acetate coating which is located along the length of the warp yarns and the weft yarns and between the warp and weft yarns at the crossing points. The coated scrim is at least partially embedded in the first TPO layer.

Coated scrim reinforced thermoplastic olefin roofing membrane

The present disclosure relates to a reinforcing textile material that comprises a weft-inserted warp knit fabric, in which the warp yarns are configured in a pattern having a majority of successive flat stitches that are used in conjunction with a minority of subsequent successive round stitches. The warp yarn configuration may be represented by the expression x+y, where x is the number of successive needle positions in which a warp yarn is positioned in a flat stitch arrangement and y is the number of subsequent successive needle positions in which the same warp yarn is positioned in a round stitch arrangement. The present weft-inserted warp knit fabrics possess improved dimensional stability, high tensile strength, high tear strength, and a relatively smooth surface, making them well-suited for use as reinforcements in roofing membranes, signs, banners, tents, and the like.

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Moore, SC, United States of America

David W Martin