The Hidden Factor Behind Stable Stacking: Understanding COF in PP Woven Bags
Linyi, Shandong, China – August 21, 2026 – Risks of Bag Stack Slipping / Collapse, as discussed below.
Safety Risks to Workers
A collapsed stack may cause serious injuries to workers nearby.
Product Damage and Loss
Falling bags may be damaged, causing product leakage and financial losses.
Transportation Problems
Unstable stacks may shift during transportation, causing cargo damage or unloading difficulties.
Warehouse Efficiency Issues
Stack collapse increases handling work, labor costs, and storage management problems.
Effective Anti-Slip Solutions to Improve PP Woven Bag Stacking Stability
There are several ways to prevent bag stack collapse. For PP woven bags, the coefficient of friction (COF) plays a critical role in improving stacking stability. By optimizing the bag surface treatment, the friction between bags can be increased, reducing the risk of slipping during storage and transportation.
The following are the main anti-slip solutions for PP woven bags:
Anti-Slip Woven Fabric with Textured Surface
By adjusting the extrusion and weaving process, the surface of the woven fabric can be designed with a slightly textured structure. The uneven surface increases friction between bags, helping prevent slipping and improving stack stability.
Matte Lamination or Rough Surface Coating
Compared with glossy lamination, matte lamination provides a less slippery surface. For higher anti-slip performance, rough surface coating can further increase friction and improve the stability of stacked bags.
Applying matte OPP film to the bag surface can effectively reduce surface smoothness and increase friction. This treatment provides both a premium appearance and better anti-slip performance.
Anti-Slip Surface Treatment
Special surface treatments can be applied to the bag during production to improve the coefficient of friction (COF). These treatments help maintain better grip between bags, especially for heavy-duty packaging applications such as fertilizer, sugar, and salt bags.
Anti-Slip Printing Ink
Using special anti-slip printing ink on the bag surface can create additional friction points. This method improves stacking stability while maintaining the original printing design and appearance of the packaging.
Conclusion: Improving Safety Through Better Surface Engineering
Bag slipping is a common challenge for high-stack storage and transportation, especially for heavy products packed in PP woven bags. Improving the coefficient of friction (COF) through proper surface treatment is an effective way to reduce stack movement and enhance safety.
These anti-slip solutions can be integrated into the existing bag production process with minimal impact on cost while providing significant improvements in stacking stability. By focusing on surface performance, PP woven bag manufacturers can offer safer, more reliable packaging solutions for global customers.
About Us
Shandong Golden Sunshine New Material Technology Co., Ltd., established in 1998, is a national high-tech enterprise integrating R&D, production, sales, and export. With nearly 30 years of experience in the plastic weaving industry, the company covers an area of 56,000 square meters with a registered capital of 30 million RMB.
Media Contact
Company Name: Shandong Golden Sunshine New Material Technology Co., Ltd.
Contact Person: Media Relations
Email: Send Email
Country: China
Website: https://www.gspacks.com/
