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Small innovations and improvements in Shaanxi Chemical’s coal chemical industry yield positive results. Author/Source: Shaanxi Chemical’s Coal Chemical Industry. Date: April 18, 2023. Clicks: 92. The year 2023 is a year focused on \"reducing costs and increasing efficiency\" for Shaanxi Chemical Company. Adhering to the principle that \"all costs can be controlled,\" the company focuses on six key areas while promoting six aspects of development, striving to write a new chapter in high-quality development in the new era. This special feature aims to foster an atmosphere of participation from all employees in efforts to reduce costs and increase efficiency. It highlights outstanding individuals and successful cases within the branch factories, showcases the ideas, methods, measures, and successes adopted by various units in striving to cut costs and boost productivity, strengthens cost management across the organization, and promotes continuous improvements in efficiency and effectiveness in order to succeed in these efforts to reduce costs and enhance performance. In the first quarter of 2023, the plastic products company fulfilled the production targets set by the group company; it produced 6.47 million sets of packaging bags of various types, generating revenue of 10.11 million yuan and a profit of 570,000 yuan, thereby ensuring a stable supply of packaging bags. Furthermore, in the pursuit of cost reduction, efficiency improvement, and high-quality development, a series of technical upgrades to the key processes in the woven bag production line – namely the film blowing stage, the circular weaving stage, and the internal adhesive application stage – have been successfully implemented, resulting in new achievements through small-scale improvements that yield practical benefits. Technological upgrade for film extrusion cooling: Film extruders are the main equipment used for producing the lining films for urea packaging bags. As the annual production targets set by the group company increase year by year, the rising demand for these lining films, without any changes to the existing film extrusion systems, imposes new requirements on the operating speed of these extruders. Due to the physical properties of plastic products, in order to ensure the steady operation of film blowing equipment during the high temperatures of summer, plastic manufacturing companies took proactive action by reconfiguring the lubricating oil system for the main screw used for material output and installing plate heat exchangers. Once these were put into use, the temperature of the lubricating oil dropped by 30%. By addressing the issues related to high-temperature operation of the equipment, it became possible to improve the performance, speed, and productivity of the film blowing equipment, thereby ensuring an adequate supply of the necessary lubricant for the downstream spinning processes. Technical improvement of the guide frame for circular looms: Following the successful modification of the rails for round steel reeds in the circular weaving section, and taking into account the high wear rate of the guide frames on circular looms due to years of continuous operation of the old equipment on the production line, Plastics Industry Company carried out welding reinforcements at three key points of the guide frames, thereby creating a better foundation for the efficient operation of the components related to the shuttles in circular looms. At the same time, in terms of controlling the cost of spare parts procurement, the cost price decreased by 30% after these components were custom-made. Improve and upgrade old equipment to extend their service life, thereby making new contributions to cost reduction and efficiency improvement over the long term in production operations. Technical upgrade of the heating component in the internal adhesive application station. The internal adhesive applicator is a key device used in the production of urea packaging bags with internal adhesion; its function is to effectively bond the outer woven bag with the lining film of such bags. The heating box utilizes an internal spiral structure to circulate air, thereby ensuring that hot air evenly heats the surface of the fabric. The efficiency of temperature control in this system has a direct impact on the yield of finished products made from these adhesive-coated fabrics. As part of this technical upgrade, the plastics company started by increasing the power of the motor at the fan outlet of the heating box, and as a result the fan’s operating speed increased from 2800 revolutions per minute to 3100 revolutions per minute. With an increased air flow rate, the efficiency of heat air circulation inside the heating chamber’s drying tunnel doubles, and the temperature difference within it is reduced by approximately 43%. As a result, the adhesion strength of the lining film improves significantly, effectively eliminating defects such as poor adhesion, bag warping, and edge irregularities that occur during subsequent cutting processes.