proc_carpet_tufting

Carpet Tufting

formative · tufting, tufted carpet, broadloom tufting, carpet manufacture

Pushing yarn through a woven backing fabric so it loops or stands up on the other side, then locking it in place with latex on the back so it does not pull free. Almost every modern wall-to-wall carpet — domestic, contract, automotive — is made this way. The technique replaced traditional weaving in the 1950s because tufting machines work an order of magnitude faster, and the carpet that comes off them is dense enough that the speed barely shows.

An array of barbed needles (gauge from 1/10 inch wide for plush carpet to 1/4 inch wide for level loop) pushes pre-tensioned yarn through a primary backing (typically polypropylene woven cloth) on a tufting machine running 800–2000 stitches per minute. A looper hook on the underside catches the yarn loop; cut-pile carpet has a knife after the looper that severs the loop so the pile stands up as a tuft, level-loop carpet leaves the loops uncut. After tufting, the back is coated with a SBR latex (~1.5 kg/m²) and a secondary backing is laminated on. Pile height typically 5–15 mm, density 30–60 oz/yd² (1000–2000 g/m²). Wool, nylon (6, 6,6), polyester, polypropylene, and increasingly recycled-PET fiber are all tuftable on the same equipment with appropriate needle and yarn tension. Loop carpet wears longer; cut pile reads softer; cut-and-loop sculpting gives pattern in a single color.

Scale & Tolerance

  • scale (mm)100 – 50000
  • tolerance (mm)3
  • skillbeginner with a hand tufting gun in a couple of evenings; industrial machine operation is a multi-week training plus pattern-programming literacy
  • costvery low per square meter on industrial scale; moderate for studio hand-tufted work

Equipment

  • school_shophand tufting gun (Tuft the World, AK series) on a stretched primary backing in a wooden frame — increasingly common in textile-design programs and in studio-scale rug makers
  • professionalindustrial tufting machine (Cobble, Tuftco, CMC) at 4 m wide, electronic pattern control (yarn-feed servos for color and pattern), backing line, shearing and finishing line
  • industrialfully-integrated mill — tufting, dyeing or yarn-storage racks for solution-dyed fiber, latex back-coating tunnel, secondary backing lamination, shearing, inspection, roll-up and trim

Environmental

  • energy_usemoderate (tufting itself is low; yarn extrusion or wool spinning upstream is the larger load)
  • waste_streamyarn ends and trim (some recyclable, some downcycled to insulation), latex over-application, end-of-life carpet (large landfill load — recycling streams exist for type-6 nylon via Aquafil's ECONYL and for some PET, but most carpet still goes to landfill)
  • consumablesyarn (wool, nylon, polyester, PP, PET-recycled), primary backing fabric, SBR latex, secondary backing
Compatible materials

Citations