A practical guide to identifying and resolving PP flat yarn extrusion line faults—covering everything from unstable melt output and surface defects to yarn breakage.

Last week, HAOSEN welcomed a customer from Europe and the United States for a factory visit to conduct an on-site inspection of a PP valve bag making machine. The HAOSEN team was led by General Manager Philip, accompanied by Operations Manager Primo, Sales Manager Allen, and Graphic Designer Riley.

HAOSEN's R&D team has recently completed multiple structural optimizations and upgrades to the cutting-sewing-inserting-hemming machine. Based on extensive customer feedback, these upgrades address key pain points in traditional equipment — particularly in vision inspection and hemming processes — significantly enhancing the machine's intelligence and finished product quality.

HAOSEN recently delivered 30 high-speed 6-shuttle circular looms and one fully automatic cutting-sewing-inserting-hemming machine to a major rice processing enterprise in the Philippines. The customer is a well-known rice producer in the region with an annual output of hundreds of thousands of tons, requiring large quantities of woven bags with high strength and quality standards.