In the soft packaging production industry, flat bag is the most widely used and most in demand basic bag type, involving food packaging, aluminum foil packaging, daily chemical packaging, industrial sample packaging and other fields. In the process of high speed production, traditional bagging equipment is prone to problems such as film stretching, bag body elongation, uneven thickness and graph deviation, which affect the output of finished products. As a kind of professional bag making equipment with high precision, the non-tensile bag making machine solves the problem of film stretching deformation. With the advantages of flat forming, precise size and no need to pull materials, it has become the core equipment for the production of high-end flat bags. It aims at popularizing the working principle, core characteristics and applicable packaging bag types of the device to help industry practitioners gain a better understanding of its value.
The core principle of non-tensile flat bag making machine is to realize zero tensile feeding and precision forming by precise tension control system and uniform bagging structure. In the process of feeding, hauling and cutting of traditional bag making machine, the film deformation caused by tension is unstable, which leads to uneven bag length and sloping edge. The non-tensile bag making machine is equipped with automatic constant tension control system and servo precision feeding mechanism, so that the thin film can be transmitted loosely and evenly throughout the process without the need to force the material to be pulled. The device adopts photoelectric tracking and positioning system to accurately capture printed images and text points, combines stable heat sealing structure, first complete heat sealing molding, then the precise cutting, avoids stretching and deformation problems completely from the mechanical principle, ensures that each finished flat bag is uniform in size and the pattern is regular.
Compared with ordinary bagging equipment, the tensionless process has obvious advantages. Firstly, it has the characteristics of zero deformation, high precision and no tensile damage in the whole process. The finished bag body is smooth and crisp, with the smallest size error, which meets the precision requirements of high-end package. Secondly, it has good adaptability and excellent compatibility to thin, soft, and stretchable special film materials, and solves the production pain points such as easy elongation, edge breakage and deformation. At the same time, the equipment runs stably, the heat sealing is uniform and firm, the sealing edge is smooth without bubble or virtual sealing, the qualified rate of finished products is greatly improved, the production losses and scrap rates effectively reduced, and the production efficiency of the enterprise is improved.
Focusing on non stretch forming technology, the equipment is suitable for the production of a variety of high-precision, high-demand flat bag products, covering commercial, food, industrial and other mainstream packaging fields. First, there are a variety of color printed composite flat-pack, including aluminum foil flat-pack, aluminum-coated flat-pack and PET composite flat-pack. This type of printed packaging requires a great deal of image and text placement and bag the flatness. No stretching process can prevent text deviation and bag deformation, and ensure the appearance and quality of packaging. Next is food grade plain bag, dry goods packaging bag, snacks plain bag, such as medicinal preservation bags. The equipment has the precision thermal seal characteristic, the seal is tight, nondestructive, effectively guarantees the food storage safety.
At the same time, the equipment can be used with various kinds of thin film flat bag, industrial sample flat bag, daily chemical powder flat bag, single-use packaging flat bag and other products. It is especially suitable for packing material with thin thickness, soft texture and tensile deformation, which makes up for the fact that traditional equipment cannot produce high precision film flat bag. It should be noted that the device is mainly used for flat bags and is only suitable for standard flat bags, with no hem or bottom support. It is not suitable for the production of special bags such as self-use bags and organ transplantation bags.
In practical production application, the value of the unstretched flat bag making machine is very prominent. Printed packaging products can effectively avoid problems pattern elongation, dislocation and inaccurate overprinting caused by film stretching, and ensure uniform and beautiful packaging appearance; food and industrial protection packaging, stable heat sealing and cutting process can ensure the insulation and sealing of packaging bag and prevent air leakage and damage; batch standardized production, equipment speed, stability and high yield rate can meet the needs of large-scale production, while strictly controlling the accuracy of products and adapting to the requirements of large-scale production plants.
In conclusion, non-stretch flat bag machine is the core equipment of high precision flat bag production in soft packaging industry. Its core advantages are constant tension material control, zero tensile forming and precise positioning cutting. Accurate adaptation to mainstream products such as printed composite flat bags, aluminum foil flat bags, food flat bags and industrial sample flat bags, while balancing production efficiency and product quality, is a key equipment for modern packaging enterprises to upgrade high-precision production lines and improve product competitiveness.
