System and method of manufacturing a unitary construction of a weft knit article with one or more warp insert in an integrated knitting process by using a weft knit machine. The unitary construction comprises one or more yarn materials, which are incorporated into one or more weft and warp stitch structures. The knitting machine is equipped with a warp feeder assembly, including a weft knit warp feeder, a warp knitting guide needle block operable to hold a plurality of warp strands, a strand guide bar configured to guide the plurality of warp strands to the weft knit warp feeder, and a cam box. The cam box includes at least a weft stitch cam, a weft guard cam, a warp stitch cam, and a warp guard cam.

A preparation method of a jacquard sandwich fabric with a two-colored surface is disclosed, employing a jacquard warp knitting machine, comprising: 1) changing a guide bar configuration; 2) changing a jacquard control signal; 3) re-defining a basic stitch of a jacquard; 5) converting a designed pattern into a graphic diagram, and continuously modifying the pattern through the graphic diagram; 6) after finishing the pattern design, directly exporting a knitting document, importing the document into a machine file, and producing the jacquard sandwich mesh fabric with a two-colored surface. A weft laid-in stitch is added. The weft laid-in stitch can completely hide the yarns, so a two color effect can be obtained.

A preparation method of a jacquard sandwich fabric with a two-colored surface is disclosed, employing a jacquard warp knitting machine, comprising: 1) changing a guide bar configuration; 2) changing a jacquard control signal; 3) re-defining a basic stitch of a jacquard; 5) converting a designed pattern into a graphic diagram, and continuously modifying the pattern through the graphic diagram; 6) after finishing the pattern design, directly exporting a knitting document, importing the document into a machine file, and producing the jacquard sandwich mesh fabric with a two-colored surface. A weft laid-in stitch is added. The weft laid-in stitch can completely hide the yarns, so a two color effect can be obtained.