One of the notable and crucial advantages of our company lies in our profound professional experience in handling thick materials and thick threads. We are always proud of this. We deeply understand that our own success is closely related to that of our customers, and the two are inseparably linked. We are aware that every company has its unique needs and specific business challenges. Therefore, we are always committed to providing highly personalized solutions, striving to accurately identify and fully meet the specific needs of each customer. It is precisely because of this meticulous and tailor-made service philosophy that Longsew Company has won the deep trust of many important companies in the industry.

The production of big bags, also known as FIBC bags or Jumbo bags or bulk bag, is a highly complex process involving multiple steps. At first glance, these containers seem to have a simple structure: mainly composed of four walls, and sometimes equipped with feed and discharge ports for easy filling or emptying of the contents. However, in practice, it is clear that despite their simple appearance, the performance expectations of end users for these bags are constantly rising. As users hope to fill these containers with increasingly expensive and valuable products, the manufacturing process of FIBC bags must also be upgraded, using more advanced technologies and materials to ensure their safety and reliability.

We have also keenly observed that a considerable number of customers in the current market are actively seeking various types of machinery and equipment. Their aim is not only to enhance the automation level of the production process but also to effectively reduce production costs, such as by cutting down on the number of employees to achieve cost optimization. In response to this market trend, our core objective is to provide our customers, the large bag manufacturers, with a series of machinery and equipment typically associated with large bag production, such as high-efficiency sewing heads. At the same time, we are committed to offering more comprehensive solutions, enabling customers to independently manufacture various key components of large bags, such as polypropylene tape, which can be used to produce high-strength fabrics; and PE foil, for making bag inner linings to enhance the overall performance of the bags.

After in-depth analysis and research, Longsew Company has reached a clear conclusion: we must constantly provide our customers with possibilities for continuous growth in their production potential. Our primary task and main goal is to fully meet the expectations of our customers. We firmly believe that with our professional capabilities and innovative spirit, we can provide our customers with practical and effective solutions to significantly enhance their production potential.

These solutions cover multiple key aspects, including but not limited to:

Precisely sew the rings (or belts) onto the large bag to ensure its load-bearing capacity; carefully sew the edges of the large bag to enhance its structural stability;

Fasten the spout firmly onto the circular opening of the upper cover to ensure its sealing performance.

Similarly, sew the spout onto the circular opening of the bottom cover to ensure ease of use.

Seal the top cover tightly onto the valve body to prevent material leakage; and secure the bottom cover firmly to the machine body to enhance the overall stability. Through these meticulous process improvements, we are committed to creating high-performance and reliable large-bag products for our customers.

81300A1H sewing machine is one of the most common used sewing machine in heavy duty FIBC bag producing industry. It is specially designed for FIBC bag side seaming & heavy duty corner seaming, two needles for overlock (502) + chainstitch (401). Strong body and motor for max 19mm thickness sewing with filler cord function.

80700CD4H sewing machine is one of the most common used sewing machine in heavy duty FIBC bag producing industry. Different bags different function can choose: Single needle or double needles; flat bed or cylinder bed; Pneumatic foot lift or manual; hot cutter or manual. Strong body and motor for max 18mm thickness sewing with filler cord function,

LS300-5030 automatic pattern sewing machine using 6 times big rotary hook. It is specially designed for FIBC bag’s lifting belt sewing (Loopsew). Use Dahao computerized control system, can storage 900 different patterns. Working area: 500mmx150mm. For some customer special requirement, we can make extra max is 550mm, also Y direction working aear can reach 300mm. ( need specially order).

LS200-3020CM automatic pattern sewing machine is specially designed for container bag’s spout rosettes, or we call it outlet rosettes sewing. Use Dahao computerized control system, can storage 900 different patterns, also customer can due to their needs design new pattern themself. Using 3 times big rotary hook, max speed 2800rpm, can highly increase the working efficiency. Working area: 300mmx200mm.

GSC367TD lock stitch sewing machine is our special designed sewing machine for big bag making. Compared with old version Bulk bag sewing machine, GSC367 series have obviously advantages: Super big Hook; Auto lubrication; Big working space; Higher speed; More auto electronic functions, highly improve working efficiency and sewing performance.

LS5800 series sewing machine is specially designed for Q type big bag baffle sewing. Designed with very big working space(635*160mm) suitable for sewing the seaming baffle onto the FIBC bag body. Also we have big needle gauge type for directly sewing the belt onto the big bag body. Top and bottom feeding, with filler cord guide, double needles chain stitch with fast speed, big working space, S.S. 304 body shell, auto pneumatic & hot cutter function.

GSC2602TD lock stitch sewing machine is specially designed sewing machine for bulk bag making, mainly for replace shuttle hook sewing machine like 4-1. Compared with shuttle hook sewing machine, this machine adopt 5 times big rotary hook, increase the speed from 800rpm to 1200rpm. GSC2602TD add pneumatic foot lift & pneumatic reverse sewing system highly increase working efficiency.

LS7800 sewing machine is developed due to 4-1 sewing machine. Use bigger shuttle hook, with a faster speed max can reach 1000rpm. Shuttle hook have features with low speed but more thick material and more thick threads. Even though, still it is widely used in FIBC bag sewing because of low price and stable quality. Option parts for pneumatic foot lift and pneumatic reverse sewing can highly improve working efficiency.

LS300-6050 automatic pattern sewing machine using 6 times big rotary hook. Use Dahao computerized control system, can storage 900 different patterns, also customer can due to their needs design new pattern themself. Super big working area: 600mmx500mm, belt sewing length reach 500mm, and because X direction can be 600mm, so for some big bag this machine can sew two side of lifting belt to bag body in one time.

LS200-5020 is specially designed for FIBC bag loop ring, lifting belt sewing. Also it is widely used for sewing heavy duty lifting belt for less than 10mm thickness. Use 3 times big rotary hook.

Specially table cover design for one machine two ways using. Without S.S. table top cover can be used for sew 200mm*100mm area FIBC lift ring. With cover can be used for sew 500mm*200mm lifting belt. Also it can be used for sewing safety belt, locking band etc.

LS200-3050 automatic pattern sewing machine using 3 times big rotary hook, compared with LS300 series 6 times big rotary hook, LS200 more suitable for small stitch length sewing, when stitch length smaller, the speed can be faster. Use Dahao computerized control system, can storage 900 different patterns, also customer can due to their needs design new pattern themself. LS200-3050 working area: 300mmx500mm. Means max working belt length is 500mm. LS200-3040 working area: 300mmx400mm. Means max working belt length is 400mm.

GN20-3 sewing machine is specially made for overedging stitch (502) sewing, with different modify it can be used for sew FIBC bag, Carpet, Fishing Net etc. LS20-3 is specially designed for Overseaming FIBC bags, it with long overlock width, and stable working performance, can be used for very thick threads.

DN-2W is double needles 4 threads chain stitch, and DN-2LW is left hand type sewing machine,  we newly developed top and bottom feeding type, we call it U type, And due to some customer special requirement we have with auto cutter type DN-2 which is used in producing line. Original type have can be 100% exchange with new long machine.

DN-2HS is single needle, DN-2LHS is left hand type sewing machine, DN-2W is double needles. We newly developed top and bottom feeding type, we call it U type. And due to some customer special requirement we have with auto cutter type DN-2 which is used in producing line. Original type have can be 100% exchange with new long machine.

GSC367TDZ, FIBC torba (toplu torba) yapımı için özel olarak tasarlanmış en yeni versiyonumuzdur. 367 serisine dayanarak 1000W doğrudan tahrikli motor kullanıyoruz. Şu işlevlere sahiptir: pnömatik ayak kaldırma; serbest dikiş için pnömatik ayak kaldırma; pnömatik ters dikiş; İğne konumu sabitlendi; İğne ve baskı ayağı için ayrı kaldırma; Hız ayarı vb.

80900 series is cylinder type of 80700, it is more suitable for sewing FIBC bag circle part, cylinder bed will help for sewing more easy and better. Single needle or double needles; flat bed or cylinder bed; Pneumatic foot lift or manual; hot cutter or manual. Strong body and motor for max 18mm thickness sewing with filler cord function, all is wonderful for FIBC bags.

The LS6800 is our newest version lock stitch sewing machine for sewing big bag (FIBC), compared with older version its have big advantage than others:

- Extra big rotary hook 6 time big hook

- Bigger working area, arm long over 500mm

- New version big hook speed can reach max.2000rpm.

- Auto lubrication makes longer using life

- Newly developed auto trimmer for thick thread highly increase working efficiency

- New direct drive system with touch screen for more sewing functions control