Curvature Protection for Double-Curved GRC Panels During Transportation: Flexible Support and Shockproof Packaging Technology

Curvature protection of double-curved GRC panels during transportation is a key step in ensuring installation accuracy. The triple protection system of "mold-based packaging + air-cushion shock absorption + rigid outer frame" developed by Qinglong Group reduces the transport damage rate to below 0.1%. This professional transport solution ensures that the geometric precision of double-curved panels remains intact from factory to site.

Mold-based packaging is the core measure. A dedicated foam mold is made for each double-curved panel, with the mold profile matching the panel exactly and a thickness of ≥50mm. 3mm-thick pearl cotton (EPE foam) is placed between the panel and the mold to avoid hard contact. When stacked in multiple layers, support frames are set between layers to distribute pressure evenly. Qinglong Group adopted this solution for the Hainan project transport; inspection after 1,200 km of transport showed a curvature change of ≤0.1%.

The air-cushion shock absorption system absorbs impacts. Airbag arrays are attached to the inner walls of the packaging box, inflated to a pressure of 0.1-0.2MPa. When impacted, the airbags absorb energy through compression and rebound. Transport vehicles are equipped with GPS and acceleration sensors to monitor vibration in real time. Through big data analysis, Qinglong Group has optimized loading plans and transport routes.

The rigid outer frame resists external pressure. The packaging box adopts a steel-wood structure, and frame rigidity ensures no deformation during stacking. The boxes are marked with labels such as "This Side Up" and "Do Not Crush" to standardize loading and unloading operations. For oversized components, special transport permits are applied for and dedicated escort vehicles are arranged. Through systematic protection, double-curved GRC panels arrive safely on site, laying the foundation for precise installation.