Carpet construction and carpet backings for same
View Patent ↗Carpet backings and use thereof in tufted carpets with good tuft bind and fuzz resistance and free of inorganic and latex materials are disclosed. Backings suitable as tuftable primary backings or as secondary backings have a nonwoven fabric with thermoplastic filaments and a thermoplastic supporting fabric operatively attached as by needling, thermal calendaring or point bonding.
1. A secondary carpet backing consisting of a nonwoven adhesive fabric needled or thermally bonded to a supporting fabric, wherein the nonwoven adhesive fabric is a self-bonded or spunbonded nonwoven fabric comprising continuous filaments of a thermoplastic resin and the supporting fabric is an open weave secondary backing fabric comprising thermoplastic warp yarns with a substantially rectangular cross-section woven in a leno weave with thermoplastic weft yarns that are spun yarns or yarns having a substantially rectangular cross-section.
2. The secondary carpet backing of claim 1 in which the supporting fabric is woven from polypropylene yarns.
3. The secondary carpet backing of claim 2 in which the nonwoven fabric is a spunbonded fabric.
4. The secondary carpet backing of claim 2 in which the nonwoven fabric is a self-bonded fabric.
5. The secondary carpet backing according to claim 1 in which the weft yarns comprise spun yarns.
6. The secondary carpet backing of claim 5 in which the warp and weft yarns comprise polypropylene yarns.
7. The secondary carpet backing of claim 6 in which the warp and weft yarns are woven in a 16×5 count.
8. The secondary carpet backing of claim 7 in which the substantially continuous filaments comprise a thermoplastic resin having a melting point at least about 20° C. less than the melting point of the thermoplastic resin of the yarns of the supporting fabric.
9. The secondary carpet backing of claim 1 in which the substantially continuous filaments comprise a thermoplastic resin having a melting point at least about 20° C. less than the melting point of the thermoplastic resin of the yarns of the supporting fabric.