The Backing Behind 30 Million Meters Annual Output – An Analysis of Qianfu Packaging’s Equipment Matrix Strength

In the PP woven bag and plastic packaging industry, the dual guarantee of production capacity and quality has always been the core foundation for enterprises to gain a foothold. Zhejiang Qianfu Packaging Technology Co., Ltd., a veteran enterprise with more than 30 years of experience in the industry, has an impressive annual output of 30 million meters. Behind this achievement lies a comprehensive and advanced production equipment matrix. Today, we will deeply analyze Qianfu Packaging’s “hard equipment strength” and explore how this full-chain equipment, covering from raw material processing to finished product output, safeguards the stable development of the enterprise.

Walking into Qianfu Packaging’s production workshop, the first thing that catches the eye is 400 neatly arranged circular looms, which are the core equipment for PP woven bag production. Their quantity and scale are in a leading position in the industry. The performance of circular looms directly determines the density uniformity and tensile strength of woven fabrics. The high-specification circular looms selected by Qianfu Packaging adopt advanced servo control systems, which can accurately control the warp and weft density, ensuring that the grammage error of each meter of woven fabric is controlled within ±2g, far better than the industry average of ±5g. Whether producing conventional ordinary woven bags or high-demand coated woven bags, this set of circular looms can achieve stable and efficient production. The daily output of a single equipment can reach 200 meters, and the large-scale production capacity formed by 400 units provides a solid foundation for the enterprise to undertake large orders.

If circular looms are the “core heart”, then the drawing production lines are the “raw material blood-making station”. Qianfu Packaging is equipped with 8 advanced drawing production lines, which are responsible for processing PP granular raw materials into high-quality flat filaments. As a key front-end process in woven bag production, the quality of flat filaments directly affects the effects of subsequent weaving, coating and other processes. Qianfu’s drawing production lines adopt automatic temperature control systems, which can accurately adjust the heating temperature and stretching speed according to the characteristics of different grades of PP raw materials. The produced flat filaments have a breaking strength of more than 8.0N/tex and an elongation at break controlled between 15% and 25%, fully meeting the requirements of first-class products in the national standard GB/T 8946-2013. The 8 production lines operate in parallel, with a daily output of 30 tons of flat filaments, which can not only meet their own production needs but also provide high-quality raw material support for some cooperative enterprises.

In terms of improving the functional performance of packaging products, coating production lines play a crucial role. Qianfu Packaging is equipped with 1 outer coating production line and 1 inner coating production line, which are specially used to produce coated woven bags with special properties such as waterproof, moisture-proof and acid-alkali resistance. The outer coating production line uses environmentally friendly PP coating materials and forms a uniform coating on the surface of woven fabrics through a roll coating process. The coating thickness can be adjusted between 0.05mm and 0.2mm according to customer needs. The woven bags treated with outer coating have a waterproof grade of IPX5, which can effectively protect the internal goods even in heavy rain.

This product is particularly suitable for packaging chemical fertilizers and pesticides in the chemical industry, as well as cement and lime in the construction material industry, solving the problem of material dampness and deterioration caused by the poor waterproof performance of traditional woven bags. After a large chemical fertilizer enterprise used Qianfu’s outer coated woven bags, the loss rate of its products during the rainy season dropped from 8% to 1.5%, reducing economic losses by millions of yuan annually. The inner coating production line, on the other hand, uses food-grade coating materials to meet the special needs of industries such as food and chemical engineering. It realizes a smooth inner surface of the woven bag, avoids material adhesion, and has good oil resistance and corrosion resistance, which can meet the packaging needs of special materials such as flour and chemical fertilizers.

As an important link to enhance product added value, Qianfu Packaging is also equipped with a complete equipment system for printing processes. 4 flexographic printing machines and 12 offset printing bag production lines form a full coverage capability from simple logo printing to complex pattern printing. The flexographic printing machines adopt water-based ink printing technology, which is environmentally friendly and pollution-free, with a printing resolution of up to 300dpi, which can clearly present complex corporate logos and product information. The maximum number of printing colors can reach 6, meeting the diverse needs of customers for packaging appearance. The offset printing bag production line, on the other hand, realizes integrated production of printing and bag making for high-end packaging needs, reducing intermediate transfer links. This not only improves production efficiency but also effectively avoids scratches and misalignment of printed patterns during transfer, which is especially suitable for mass production of high-end gift packaging bags and custom brand bags.

In addition to the above core production equipment, Qianfu Packaging is also equipped with 3 PE film production lines, 20 automatic cutting machines, 15 automatic hemming machines, 18 wireless sewing machines, 12 sewing machines and more than 100 auxiliary equipment, forming a full-process production system covering “raw material processing – weaving – coating – printing – bag making – finished product inspection”. The automatic cutting machine adopts laser positioning technology with a cutting accuracy of ±1mm, effectively reducing material waste. The automatic hemming machine realizes integrated operation of hemming and edge pressing, improving the flatness of the bag mouth by 40%. The wireless sewing machine adopts ultrasonic welding technology, which improves the weld strength by 30% compared with traditional sewing processes and avoids the problem of thread falling off. More than 100 auxiliary equipment cover all links such as raw material testing, finished product weighing, packaging and palletizing, realizing semi-automation of the production process and increasing production efficiency by more than 50%.

Over more than 30 years of development, Qianfu Packaging has always adhered to the concept of “equipment upgrading drives quality improvement” and continuously increased investment in equipment and technological transformation. From a dozen simple equipment in the early days of its establishment in 1992 to a modern production enterprise with hundreds of advanced equipment today, the iteration and upgrading of equipment have witnessed the growth path of Qianfu Packaging. In the future, Qianfu Packaging plans to introduce an intelligent production management system to realize real-time monitoring and intelligent scheduling of equipment operation data, further improving production efficiency and product quality, and continuing to lead the way in the PP packaging industry.