Double Jacquard Circular Knitting Machine

Judge both sides of the fabric

Double jacquard is bought for a patterned double-knit structure, not simply for a colored face. The face, reverse, thickness and stability must work together for the intended garment or home-textile product. Kunyuan’s archived record lists a 30 inch, 8G–36G and 64F starting configuration, with additional 34 inch/72F and 38 inch/96F examples. It records 12–18 RPM and electronic selection for knit, tuck and miss.

The old application list includes fashion fabric, curtains, sofa fabric and mattress textiles. Those end uses do not share one construction or finishing route. A buyer should submit the actual repeat, yarn plan, required face/back appearance, finished width and fabric hand. The technical response should identify the needle-selection system and the offered diameter, gauge and feeder layout for that brief.

Why knit, tuck and miss need a fabric plan

Electronic needle selection can assign knit, tuck or miss actions, but the design must remain compatible with the double-knit structure. Long floats, dense tuck areas or an unbalanced yarn plan may change fabric weight, stretch, width and reverse-side appearance. A high-resolution artwork file is not proof that the structure will run cleanly.

Ask how the pattern is transferred, named and backed up. Confirm whether the selectors act at the cylinder, dial or the offered combination, and how the operator returns to a known pattern position after a stop. Needle and dial timing, yarn allocation and take-down must be recorded with the file because these mechanical settings influence the same visual result.

Order-specific decisions

Use a pattern that stresses the structure

Choose a trial repeat with fine edges, larger solid areas, a color transition and at least one section where the back construction is easy to inspect. Run the production yarn and keep the file revision, selector setup, stitch settings and stop log. Take samples at more than one roll position so a gradual tension or registration drift is not missed.

Inspect face clarity, repeat alignment, unintended holes, needle lines, float condition and the reverse-side structure. Measure width, weight and dimensional response after the intended finishing route. For upholstery or mattress fabric, add the buyer’s own abrasion, lamination or assembly tests; the knitting-machine page should not claim those downstream properties without evidence.

Diagnose pattern defects without guessing

A defect that follows the electronic repeat deserves a program or selector review. A mark fixed at one machine position calls for inspection of the corresponding needle, dial or feeder area. Color variation across a wider zone may come from yarn lots or tension. Keep these routes separate so operators do not edit the design to hide a mechanical issue.

Back up programs, restrict revision access and note the file loaded for each roll. Clean and lubricate the mechanical parts according to the supplied procedure, and isolate power before inspection. The archived 12–18 RPM range is useful only when the yarn, repeat, gauge and inspection method are also stated.