| 摘要 |
<p>A carpet (10) is tufted (11) with a two-part primary backing (12). The upper, or face, backing (14) is a conventional woven or non-woven polypropylene, and the lower, or back, backing (15) is a stronger, open weave fabric. The tufts of yarn (11) are sewn through both parts of the primary backing (12), which holds the parts (14, 15) together, and causes some of the back stitches to protrude for better coating with adhesive. The resulting carpet may be fully back coated, and may have a secondary backing adhered thereto. The lower backing prevents elongation, stretching and shrinking of the carpet during manufacture and subsequent processing.</p> |
