Customer Needs
- 25μm ultra-thin PE protective film, 3000m roll length — required by the client’s continuous sandwich panel production line: insufficient roll length causes frequent reel-change downtime; standard-thickness film causes self-adhesion and layer-to-layer blocking under the high tension of extra-long roll winding
- Root-cause resolution of extra-long roll self-adhesion — not just thickness reduction, but precise formulation of anti-blocking additive; equivalent ultra-thin long-roll film with insufficient anti-blocking additive still causes layer-to-layer blocking in summer high-temperature warehouse storage
- Consolidate multi-category film (color-coated steel panel protective film / metal sandwich panel face-layer protective film) into single-supplier procurement — reducing multi-vendor management overhead and line recalibration frequency caused by inter-supplier performance variation
- Stable delivery supporting continuous production line scheduling — sandwich panel manufacturer production schedules are highly continuous; a single delayed film shipment directly causes production line shutdown waiting for material, with downtime cost far exceeding the film value
- Flexible payment terms (T/T / L/C / O/A available) — Middle East manufacturers establishing initial cooperation with Chinese suppliers universally face cash-flow vs. payment terms balancing; supplier payment flexibility is a significant factor in first-order decision-making
- Zero on-site application complaints — protective film quality complaints on sandwich panel production lines (edge lifting / film bubbling / adhesive residue at removal) directly cause finished panel surface defects, affecting the panel manufacturer’s delivery quality acceptance for end-use construction projects
Why the Customer Chose Us
The 25μm ultra-thin formulation reduces material consumption per unit area by 50% versus standard 50μm film — at the same roll length, each roll covers twice the panel area, directly lowering per-square-meter film procurement cost on sandwich panel production. Post-consolidation into single-source supply, procurement management overhead (sourcing, quoting, incoming inspection, payment reconciliation) is further compressed, with significant improvement in overall procurement efficiency.
The 25μm ultra-thin PE film in 3000m extra-long roll winding prevents layer-to-layer self-adhesion through a precisely formulated anti-blocking additive — the most difficult technical challenge in ultra-thin long-roll film production. Excessive anti-blocking agent concentration affects film surface clarity and peel force stability; insufficient concentration still causes layer-to-layer blocking in Saudi warehouse storage above 40°C. Plashield adjusted the formulation specifically for the client’s actual storage temperature conditions (Saudi summer indoor warehouse 35–45°C) and confirmed mass production after the client validated the film in local storage conditions.
Dedicated capacity reservation established for this account — monthly production schedule confirmed by end of prior month, prioritized above general order insertions. 25μm extra-long roll production is more process-intensive than standard film (higher precision tension control required during winding); dedicated line scheduling ensures no lead time fluctuation from ad-hoc capacity reallocation. Since the first order in March 2024, all batch delivery deviations have been within committed windows, with no client production line shutdown recorded due to film delivery delay.
Initial order on T/T prepayment; after verifying product quality and delivery stability, cooperation upgraded to O/A account payment terms — providing the client with payment conditions comparable to local suppliers, resolving the cross-border payment cycle pressure universally faced by Middle Eastern manufacturers partnering with Chinese suppliers. The flexible payment term transition was a key milestone in the client’s procurement scale-up path from trial orders to annual volume exceeding USD 200,000.
The client previously sourced from 3 separate suppliers: color-coated steel coil protective film (temporary protection before coil slitting), sandwich panel face-layer protective film (finished panel outbound protection), and ultra-thin extra-long roll inline lamination film. After consolidating to Plashield as single source, one purchase order covers all categories; quality anomalies at arrival require contacting only one supplier, eliminating the inter-supplier responsibility deflection problem.
On sandwich panel production lines, protective film complaints typically fall into three categories: ① edge lifting during lamination, causing dust and contamination under the film; ② film bubbling on finished panels during warehouse storage, affecting visual inspection acceptance; ③ adhesive residue after removal at the end construction project site, generating owner claims against the panel manufacturer. Since March 2024, this client has recorded zero complaints in all three categories — validating the 25μm formulation’s performance stability under two demanding conditions: Saudi local high-temperature warehouse storage (summer 35–45°C) and long-haul sea freight (China to Saudi Arabia ~20–25 days).
Solutions Provided
Developed Ultra-Thin 2.5 Silk (25 Micron) × 3000m Protective Film
- Resolved extra-long roll self-adhesion: Standard PE film in 3000m winding accumulates layer-to-layer pressure as roll diameter increases, causing inner-outer layer self-adhesion with high frequency of film tearing and breakage during unwinding. 25μm formulation uses precisely controlled anti-blocking additive (SiO₂ micropowder or silicone-based, concentration precisely controlled at 0.3–0.8%) to reduce inter-layer friction coefficient; validated no layer blocking after 30-day storage at Saudi summer 45°C warehouse temperature conditions
- Reduced material cost: 25μm vs. standard 50μm — 50% less material per unit area; for the same coverage area, batch order quantity halved and SKU unit price directly reduced. Roll weight also reduced approximately 40%, lowering per-unit freight and warehouse footprint cost
- Improved production line efficiency: 3000m long rolls reduce reel-change frequency to one-third of 1000m rolls, cutting per-change downtime (~5–8 minutes/change) and film leader waste at each reel change; effective daily lamination time on the production line increased significantly
Dedicated Production Line for Key Accounts
Key accounts with annual purchase volume exceeding USD 200,000 receive dedicated capacity priority — monthly capacity reservation confirmed with the client before end of the prior month; 25μm ultra-thin long-roll scheduling is not mixed with standard-thickness general orders. This resolves the core pain point for sandwich panel manufacturers: panel production is a continuous line operation, and film arrival timing must precisely align with production scheduling. Mixed scheduling with general orders creates risk of delivery compression during peak-season capacity constraints. Dedicated line reservation eliminates this risk entirely.
Customized Procurement Policies
Collaboration model adjusted based on customer requirements; official cooperation agreement signed.
Full-Process Quality Monitoring
- Pre-production technical control: Before each 25μm batch enters production, verify raw material batch anti-blocking additive concentration and PE melt flow index (MFI) — these two parameters are the primary variables for ultra-thin film inter-layer blocking risk; raw material batch-to-batch deviation must be confirmed pre-production, not discovered at finished product testing
- In-production in-line monitoring: coating thickness precision ±0.5% (in-line inspection); winding tension adjusted in real time per roll diameter increase (preventing excess tension as diameter grows that causes self-adhesion); end face flatness visual check after each roll completion confirming no significant end-face offset
- Pre-shipment testing (five points): ① inter-layer peel force (25μm blocking resistance test) ② film-to-color-coated-steel substrate peel force (180°, ASTM D3330, including post-7-day accelerated aging value) ③ tensile strength (N/15mm, ISO 527) ④ elongation at break (%, ISO 527) ⑤ appearance inspection (bubbles / streaks / foreign particles) — test records provided with each shipment for client incoming inspection archiving
- Continuous improvement validation: Track inter-layer blocking performance under actual Saudi storage conditions (summer high temperature) on an ongoing basis; quarterly feedback of test data to client; formulation micro-adjustment records incorporated into batch archive management, ensuring improvements are fully documented
Photo Display
Achieved Results
25μm ultra-thin formulation reduced per-square-meter panel film cost by approximately 50% versus the previously used 50μm standard film; 3000m long rolls reduced reel-change frequency to one-third, with estimated 8–12% improvement in effective daily line run time (based on client line changeover records: 5–8 minutes/change, daily reel changes reduced from ~6 to ~2)
Inter-layer self-adhesion complaint rate reduced to zero from the pre-Plashield film frequency — client production line operators reported noticeably smoother film unwinding with the 25μm dedicated formulation; frequency of film leader breakage and re-threading reduced substantially
After consolidating three-supplier procurement model to Plashield single source: purchase order count reduced by 67%; incoming quality anomaly contacts reduced from 3 to 1; annual supplier audit workload reduced accordingly
Improved cash-flow flexibility. further supporting procurement scale expansion from trial orders to annual volume exceeding USD 200,000.
Since first cooperation in March 2024, zero production line application quality complaints across all batches (edge lifting / bubbling / residue); no inter-layer blocking after 30+ day storage in Saudi high-temperature warehouse conditions. Client has designated Plashield as a long-term strategic supplier for this category
Customer Testimonial
— Metal Sandwich Panel Manufacturer (Saudi Arabia)