Analysis on the Common Quality Problems and Production Methods of Jeans Belt Loop Knot
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Belt loops
Knotting machine
Routine maintenance



Submitted : 2022-10-31
Accepted : 2022-11-15
Published : 2022-11-30


The belt loop is an important part of a standard five-pocket jeans, integrating functionality and aesthetics. Because of common problems such as skewed belt loop, unequal lengths, improper slackness, double lines at the front pocket of the belt loop cover, exposed bottom of the belt loop, asymmetry, too low or too high position of the belt loop, and no light in the back, we tracked the sewing of the belt loop in the jeans production line, analyzed the causes of the problems, and came out with targeted solutions. We analyzed the operation steps of knotting jeans belt loops and then develop daily maintenance measures for knotting machines, provide technical guidance for seamstresses/seamsters and team leaders to enhance the maintenance ability to knot machines, enhance the ability of knotting machines to run well, ensure the stability of jeans belt loops quality, and provide technical reference for quality control of belt loops in the same type of jeans production lines.


Lv ZJ, Zhang HX, 2022, Analysis of Denim Fabric Trend Based on Material Innovation. Cotton Textile Technology, 50(605): 75–78.

Liang Y, Chen XW, Liu YM, 2021, Exploring the Upgrading of Denim Washing and Bleaching Industry in Xintang, Zengcheng District, Guangzhou. Dyeing And Finishing Technology, 44(01): 5–7.

Liu H, Zhu WM, 2018, A Business Model of Personalized Denim Garment Customization Based on Intelligent Manufacturing. Business and Management, 2018(01): 123–126.

Ge PT, 2020, Research the Impact Factors and Countermeasures of Green Development in the Denim Garment Industry from a Sustainable Perspective, thesis, Beijing Institute of Fashion.

Ding WB, Chang LX, 2012, Research the Practical Guidance and Parameter Design of Computerized Knotting Machine. Shandong Textile Economy, 2012(02): 91–92.

Zhang FS, Wang YZ, 2022, Study on Perceptual Evaluation of Women’s Jeans Waist Style Design. Journal of Zhejiang Textile and Clothing Vocational and Technical College, 21(02): 21–26.

Liang XX, Min W, Li HZ, et al., 2022, Common Quality Problems and Suggestions for Denim Garment Products. China Fiber Inspection, 2022(09): 37–39.

He SN, 2015, Android-Based Electronic Knotting Machine Upper Computer Software Design, thesis, Hangzhou University of Electronic Science and Technology.

Feng CR, 2014, Adjustment and Maintenance of LK1900A High-Speed Knotting Machine. Wool Spinning Technology, 47(03): 57–60.

Wang N, 2022, Measures to Improve the Value of Enterprise Quality Management System Effectiveness. Enterprise Management, 14(07): 115–117.

Cheng SJ, 2022, Research on Quality Management Optimization of Company H, thesis, Hebei Engineering University.

Shen ZY, 2022, A Brief Discussion on Quality Management of Locomotive Parts. Railroad Procurement and Logistics, 17(08): 69–70.

Pan FF, 2016, Problems and Countermeasures of Jeans Sewing Process. Apparel Technology, 45(06): 66–68.

Wang S, 2022, Analysis of the Control of Human Factors in the Manufacturing Process. Economist, 2022(06): 242–243.

Zhou HT, 2022, A Brief Discussion on Quality Problem Solving. Shanghai Quality, 2022(06): 66–68.

Yuan SN, Chen X, Chen ZH, 2017, Research on Controllable Factors of Washed Denim Garment Product Quality. Journal of Xi’an Engineering University, 31(2): 172–177.

Liu K, 2022, Research on Production Quality Management Improvement Scheme of Company G, thesis, Jilin University.

Cheng LS, 2021, Research on Product Manufacturing Quality Improvement in Company T, thesis, Jilin University.

Jin SS, Liu XQ, Wu RJ, et al., 2022, Research on the Quality Management Method of Product Production Based on Digital Twin. High Technology Communication, 32(01): 101–110.

Wang C, Ma CZ, Chen JX, 2022, How to Effectively Evaluate the Current Situation of Quality Management in Manufacturing Enterprises. China Quality Miles, 2022(04): 67–70.

Chang T, 2022, How to Do an Excellent Job of Equipment Management. Building Materials World, 43(04): 106–108.