Sealing failures on Tamper-evident Caps are a major headache for beverage and food packaging lines. Common issues include weak rolling pressure, uneven liner adhesion, and mismatched thread profiles. These problems usually come from misaligned molds, low pressure settings, or liners that don't work well with the equipment.
To fix poor sealing, follow these steps: first, adjust the rolling pressure to 8–12 MPa based on cap thickness; second, check the liner feeding track to make sure it stays straight; third, replace worn rolling dies to keep thread profiles accurate.
At Kunpeng, our tamper-evident cap production line uses dual‑stage rolling technology. This design helps improve sealing performance by around 30% compared with standard setups. Our line is built to work with ROPP‑standard cap types, so it fits most common anti‑theft cap requirements.
We focus on solving real‑world production pain points. By combining stable pressure control, precise mold alignment, and liner‑friendly handling, our line reduces sealing defects and helps customers maintain consistent packaging quality. For factories struggling with high rejection rates or unreliable sealing, Kunpeng's line offers a practical, data‑backed solution that fits smoothly into existing production workflows.
