PP Woven /Big Bag Sewing Machine DN-2 Series

A woven bag sewing machine, as the name suggests, is a sewing machine used to produce and manufacture woven bag products. Woven bags include many subcategories, such as chemical fiber packaging bags and container bags. For example, bags for wheat, corn, and soybeans all belong to woven bag products and are produced by this type of woven bag sewing machine! Woven bag sewing machines differ from those used in the garment industry. Their characteristics include a large stitch length, low speed, high presser foot lifting height, high power, and high fatigue strength. Due to the requirement for sewing thick materials, long stitches, and thick threads, a low sewing machine speed is unavoidable.

The current global pattern of the sewing machinery industry has undergone profound changes. In the field of industrial sewing machines such as woven bag sewing machines, Japan, with its deep technological accumulation, has long been a leader with brands such as Brother and JUKI. Although German equipment is known for its precision and reliability, its traditional manufacturing advantages are no longer mainstream due to high costs and strict standards. Now, China has emerged as a core driving force in the global sewing machinery industry, completing the leap from "follower" to "co-runner" and even "leader" in some areas.

The daily inspection of woven bag sewing machines mainly includes checking for vibration, abnormal noise, looseness, temperature rise, pressure, and flow rate. Generally, the performance and working condition of the woven bag sewing machine can be determined from its external phenomena during operation, using sensory observation, instruments, and the condition of the processed products. This includes factors such as the temperature, sewing speed, sewing accuracy, and noise of the woven bag sewing machine. In short, the inspection parts, frequency, and other details should be determined based on the complexity of the woven bag sewing machine, the characteristics of its functions, and its importance to product quality, in order to formulate repair parts, time, and technical preparations. The inspection work of woven bag sewing machines is generally the joint responsibility of operators and maintenance personnel.

Having undergone 20 years of development and market testing, LongSew brand woven bag sewing machines have become an indispensable tool for woven bag manufacturers.  Today, they have evolved into the ultimate solution for addressing your challenges in efficiency, cost, and quality control.

DN-2 series of bag sewing machines are high-speed machines using chain stitch, specifically designed for use in chemical plants, grain processing plants, sugar factories, hemp textile factories, and garment factories using chain stitch. This series of machines features a high-speed, fully enclosed, and fully automatic lubrication system. The main components are made of 20Cr molybdenum material.  Due to its well-established design, the machine operates with low noise and excellent stability. Therefore, the machine is not only durable but also extremely easy to maintain.

The DN-2 series sewing machines are suitable for sewing bags made from thin to thick materials such as paper bags, PP/PE woven bags, composite paper bags, and burlap sacks. DN-2HS is single needle,The DN-2LHS sewing machine is a new type of reverse sewing machine developed based on the DN-2HS model. The DN-2W is a double-needle, four-thread chain stitch sewing machine that can perform double-stitch sewing, with each stitch type utilizing two needles and a looper mechanism.and DN-2LW is left hand type sewing machine, we newly developed top and bottom feeding type, we call it U type, for example: DN-2WU means top and bottom feeding DN-2W, which have a better feeding performance.