Germany-based Karl Mayer has upgraded its RD 6/1-12 and RD 7/2-12 (EL) warp knit spacer fabric machines. Changes to both machines include: individual needle mounting for simplified needle changes and chromium-plated guide elements to protect the yarn sleys from high loads when processing monofilaments in the pile bars. Fabrics produced on the machines include 3-D upholstery fabric and textiles for shoes.
On the RD 7/2-12, Karl Mayer has reconfigured the warp beam frame to make it more compact. The beams for GB 1 and GB 2 ground guide bars are now found at the front support; guide bars GB 3 to GB 6 are attached to the girder; and guide bar GB 7 is located at the rear support. A footbridge has been added running lengthwise between warp beams GB 4 and GB 5, with additional foot beams running along the warp beam rolls on the right and left front side of the machine.
Karl Mayer has also modified the machine to simplify changing the pattern when knitting using pattern chains. A pattern drum with two separate parts now is available. Four tracks for the GB 1 to GB 4 pattern chains are located on the front of the drum, and the three pattern chains for GB 5 to GB 7 are on the rear of the drum. A chain path 1.5 meters long also is available.