Sitton has bought out former partner Colin Saville and taken over the £800,000 turnover company in his own right.
Saville has left to pursue his own interests.
Essex-based Stitch and Trim has also announced plans to move into the sheet-fed finishing business.
The company has invested in two MBO folding machines and a Wohlenberg guillotine to run alongside three Prima Stitching lines.
Commenting on the latest developments Sitton said: “We were just a stitching house before but with these investments we are beginning to move forward. We have dealt mainly with web-fed work before but we are now looking to do sheet-fed as well."