Solving the laminated glass problem of the coastal viewing path and strengthening the safety and aesthetics of the landmark
This boardwalk faces the sea, experiencing strong winds and 1,600mm of annual rainfall. It utilizes a composite structure of 8mm tempered glass + EVA film + 8mm tempered glass. Trial production of conventional EVA film revealed critical issues:
1. Weathering failure: After three months of simulated high-temperature and high-humidity testing, the film's water absorption rate reached 0.3%, causing white fogging at the glass edges and a drop in light transmittance from 85% to 78%, significantly diminishing the viewing experience.
2. Safety Hazard: During tests involving accidental impacts by tourists, the film's load-bearing capacity after glass shattered was only 120N, below the 200N safety standard, posing a risk of falling.
3. Process bottleneck: During the lamination of the curved glass sections, the film exhibited poor fluidity, resulting in frequent localized bubbles and a yield rate of only 55%.
If this issue cannot be addressed, the entire 2,000 square meter glass order will need to be reworked, leading to losses exceeding 10 million yuan and the company potentially losing its contract with the client.
II. Shengding's Solution: Scenario-Based Customization + Full-Process Challenges
(I) Binhai-Specific Formula Accurately Addresses Pain Points
Shengding has developed a weather-resistant outdoor EVA interlayer:
- Using a modified resin as its base material, water absorption is reduced to 0.08%, and after 1000 hours of damp-heat aging, light transmittance remains at 91%, with no white haze.
- The addition of nano-reinforced particles increases the impact resistance of the composite glass to 350N, far exceeding the safety threshold.
- Optimizing melting parameters ensures the film's fluidity is optimized for curved glass, allowing for bubble-free filling of corners.
(II) Dust-Free Production + Process Empowerment Ensures Delivery
The film is produced in Shengding's Class 10,000 dust-free workshop, strictly controlling dust and humidity to prevent impurities from affecting performance. To address the challenges of curved composites, the technical team provided specialized guidance:
- The vacuum level was adjusted to -0.095 MPa, and the constant-temperature curing time was extended to 45 minutes.
- A "low-temperature gradient cooling" process was employed to prevent stress cracking in the glass and completely resolve the bubble problem.
III. Achievements: Zero-Failure Delivery, Creating an Influencer Landmark
After applying Shengding EVA film, the project achieved both improved quality and efficiency:
- The qualified finished product rate soared from 55% to 99%, shortening the production cycle by 5 days;
- Eight months after delivery, the glass showed no debonding or white fogging, and its light transmittance remained stable at over 90%;
- Third-party testing showed that it withstands wind pressure levels of 9 and its weather resistance exceeds industry standards by 30%, making it fully suitable for coastal environments.
After its completion, the boardwalk became an internet-famous check-in spot for its "high-definition views and safety protection." Three subsequent coastal projects have designated Shengding EVA film as the exclusive material.
This case demonstrates that the core competitiveness of high-end building materials lies in a deep understanding of application pain points and a comprehensive approach to transforming technological innovation into project value.
