In the production and processing of laminated woven bags, high-end feed packaging and industrial flat bags, bag body deformation, size deviation, fold fold and so on are the most common production defects, and most of these problems result from the compulsory pulling process of traditional bagging equipment. With its unique mechanical structure and working principle, the non-stretchable bag making machine has completely solved the industry pain point of stretch deformation of cloth bag, and fully guarantee the original ecology and leveling of packaging bags, which has become the core equipment of high-end weaving bag production. Many practitioners only know that the equipment has a good molding effect, but do not understand the basic principles of the equipment does not stretch, does not no deformation. In this paper, the operating logic and core technical advantages are simply decomposed.
Unlike the core operating principle of a normal drag-and-drop bagging machine, the core working principle of a non-stretch bagging machine is: uniform flattening throughout the bagging process, no forced tension, synchronous closed-loop cutting * *. Traditional bag making machine relies on active roller to drag the fabric forward, and on tension belts to complete the feeding, cutting and sealing of animal raw materials, which inevitably leads to fabric tensile deformation and warp and weft structure dislocation. The tensionless bagging machine abandons the mode of tensioning into the bag, through the combination of materials, servo constant speed control, buffer stable structure, etc., so that the fabric can complete the bagging process without external pulling, eliminating the problem of tensile deformation.
The panoramic material supporting structure is the fundamental guarantee for the realization of tensile molding. In the traditional equipment feeding process, most of the fabric is in suspension, relying only on the tugging force at both ends of the drum, the force is concentrated and uneven, which leads to local stretching, relaxation and wrinkling. The non-stretchable flat bag maker uses an integrated flat material platform to support woven and laminated fabrics throughout the production process, so that the fabric remains flat and stretched. There are no suspensions or droops in the The entire conveying process, and the fabric itself does not have tension deformation, which completely avoids defects of uneven bag width and curved surface due to uneven stress.
The high-precision servo synchronous control system is the core technology to realize zero tension of equipment. The equipment is equipped with multiple servo motors for coordinated control, which can accurately match the operation speed of feed, transport, cut, seal and so on, and realize synchronous speed and uniform rhythm of the whole process. The structure of ordinary bagging machine is different in speed of operation. If the feed is too fast or cut too slowly, the fabric will pile up. If the feed is too slow or cropped too quickly, the fabric can be stretched, creating an irreversible stretching. The servo system can fine-tune the operation parameters in real time to ensure smooth and uniform transport process, not to exert too much strain on the fabric, and to maintain the density of warp and weft weaving and original size of raw materials.
Buffer stable feeding structure, further optimize the non-tensile production effect. According to the high toughness and deformation characteristics of BOPP coated and high density woven materials, flexible buffering components added to replace traditional hard roller forced traction. The flexible structure adheres to the fabric surface, has uniform, soft friction, does not press or stretch the fabric surface, can transport the material stably, perfectly protects the bonding structure between the film layer and the fabric base, avoids the film frothing, layering and wrinkling, solves the problem that the film coated fabric is vulnerable to damage and deformation in the process.
synchronous follow-up principle of cutting and sealing the edges to ensure that the finished product is neat and undistorted. Traditional bag-making machine has some loopholes in the process of "pulling first and cutting later." Stretched fabric bounces and shrinks after cropping and forming, causing the bag to deviate in size and tilt at the edges. The unstretched flat bag maker adopts synchronous tracking technology to feed, locate, cut and edge sealing. The fabric is positioned precisely in a natural and tensionless state, and cuts and edges are sealed immediately. After cutting, the bag has no stress rebound, the size is accurate and uniform, the mouth of the bag is flat and straight, completely eliminating deformation problems caused by the stretch rebound.
This kind of unique working principle gives the equipment has the irreplaceable superiority in high-end packing production. Whether ordinary PP woven fabric or easily deformed BOPP coated woven material, the equipment can maintain the original structural strength of raw materials without disrupting the alignment of warp and weft threads, and ensure the tensile, wear-resistant, and moisture-proof properties of the packaging bag. Compared with traditional bagging equipment, the finished bag has smooth surface, no stretching deformation, small size error and high yield rate.
In conclusion, the main reasons why the non-stretch flat bag maker can achieve non-stretch and non deformation of the bag are to eliminate the suspension tension of fabric through the feed platform, adopt the servo synchronization system to prevent external tension, adopt flexible buffer structure to protect the fabric, and synchronous cutting to avoid stress rebound. These four structural principles complement each other and completely subvert the traditional bagging process. With this scientific operating logic, the equipment is suitable for the production of high precision woven bags, which can improve the finished products quality and reduce production losses. It is a key piece of equipment for precision production in the packaging industry.
