DEMATRON 80700CD4H Heavy Duty Sewing Machine The DEMATRON 80700CD4H is a four thread, two independent rows double chain stitch Bag Sewing Machine, with built-in electro-pneumatically operated hot thread chain cutter, walking foot feed dog left of the needle with enlarged sewing parts, electro-pneumatically operated presser foot and upper feed dog lifer. Guides for filler cord from the top and/ ...