The YHGK-608 thick material packaging sewing machine adopts an upper and lower synchronous feeding mechanism, which has the advantages of stable needle spacing, smooth stitching, and easy operation. Suitable for sealing packaging items such as flour bags, burlap bags, paper bags, and plastic woven bags in enterprises such as grain, chemical, and port industries. The sealing effect is better for sewing thick materials and hard film plastic woven bags. The machine adopts a semi closed mechanism that is easy to maintain, with a closed rolling bearing mechanism at the end of the crankshaft, a lubrication system of oil cup permeable wool oil storage, and a mechanical semi-automatic wire cutting blade ..