Industry Overview & Market Background
pe packaging 的应用与优势
汽车行业是 VCI 防锈薄膜的最大消费领域，约占全球需求的35%。汽车发动机部件、轴承、齿轮和制动盘等金属部件在生产和运输过程中易生锈，因此防锈包装对质量保证至关重要。
VCI 防锈薄膜采用多层共挤技术，持续释放防锈颗粒，在包装内部形成保护环境，防锈期可达12–24个月，特别适合出口运输。此外，这类 pe packaging 方案在包装内部形成保护环境。
相比传统油基防锈方法，VCI 防锈包装可将材料成本降低逾40%，且无需后续清洗。
Industry Pain Points
Automotive parts and hardware products face severe challenges during storage and transportation:
1. Severe Corrosion – The “Number One Killer” of Export Shipments
pe packaging 的防护要点
金属部件在长时间海运（通常30-60天）或高湿存储时易生锈。该问题在运输和存储条件下尤为明显。
在pe packaging环境中，传统的油基防锈方法存在明显缺点。涂覆不均可能导致局部防护失效，增加损害风险。
曾有供应商在到货时发现整个集装箱的产品报废。这一赔偿事件一举吞噬了集装箱的利润。
2. Dents and Scratches – The “Surface Scourge” of High-Value Components
Body panels (such as hoods and door panels), precision bearings, gears, and other components are prone to scratches, dents, and burrs from collisions and friction during transport and handling. For appearance parts and precision fit components, any surface damage can result in complete scrappage. Traditional paper packaging or standard plastic films cannot provide sufficient cushioning and protection.
3. Difficult Protection for Precision Parts – The “Packaging Puzzle” of Complex Shapes
Precision parts such as transmission valves, pistons, and turbocharger impellers have complex geometries and extremely tight tolerances, demanding high packaging conformity and seal integrity. Standard packaging cannot closely conform to irregular surfaces, resulting in inadequate protection. Additionally, traditional packaging tends to loosen or fail under temperature and humidity cycling.
Our Solution
We provide comprehensive protection PE packaging for the automotive and hardware industry:
1. VCI Vapor-Phase Anti-Rust Technology – Oil-Free, Clean, and Efficient
VCI (Vapor Corrosion Inhibitor) compounds are uniformly blended with PE resin in the molten state and formed into VCI anti-rust film/bags through film blowing. Inside sealed packaging, VCI molecules continuously sublime and release, forming an invisible protective layer on metal surfaces. Key advantages include:
No Dead Spots: VCI gas reaches every corner of the package, including blind holes and crevices that oil cannot cover
No Oiling/Cleaning Required: Parts are ready for use immediately upon opening — eliminating degreasing operations and costs
Transparent and Visible: Product condition can be inspected without opening the package
Long Rust Protection: 12-24 months, suitable for export shipments and long-term storage
Compliant with MIL-PRF-22019D, suitable for ferrous metals (steel, iron) and non-ferrous metals (aluminum, copper, zinc, etc.).
2. High-Barrier Multi-layer Co-extrusion Technology – Blocking the Three Elements of Corrosion
pe packaging 技术要点
在 pe packaging 结构中，外层为高强度 PE，能提高抗刺穿和抗撕裂性。
此外，中间为 EVOH 高阻隔层，厚度仅 0.08 毫米，显著降低气体渗透。
内层为 VCI 功能层，能持续释放防锈气体。
三层协同工作，提升综合性能。
EVOH 能有效阻挡氧气和水分进入；VCI 持续释放防锈气体。
此外，外层提供必要的机械强度，确保在运输和储存过程中保持完整性。
此外，即便在高温高湿环境中存放，效果也能保持。
在南美雨季等场景，存放 18 个月后，金属表面的光泽仍高于 95%。
3. Physical Protection – Cushioning and Protection in One
PE protective film/bags provide a physical cushioning barrier that absorbs and disperses impact forces during transport. Adhesion is adjustable (low/medium/high) for different surface requirements — low-adhesion non-residue formulations for precision-machined surfaces, high-adhesion for secure attachment on rough surfaces. Thickness is customizable based on component weight and protection requirements.
4. Fully Customized Service – One Solution for One Application
Anti-rust packaging solutions are designed based on metal type (steel/iron/aluminum/copper/zinc/etc.), shape (regular/irregular), storage and transport cycle (1 month/6 months/2 years), and environmental characteristics. Thickness, width, length, color, and printing are all customizable.
Related Products
Product Name Key Features Typical Applications
VCI Anti-Rust PE Film/Bags 12-24 month rust protection, transparent Engine parts, bearings, gears
3-Layer Co-extruded High-Barrier PE Film EVOH barrier, OTR＜2 Precision metal parts, export shipments
PE Protective Film Multiple adhesion levels, non-residue Body panels, precision-machined surfaces
VCI Anti-Rust Stretch Film Anti-rust + load securing in one Automated packaging lines, pallet wrapping
Application Scenarios
Automotive engine components (cylinder blocks, crankshafts, camshafts)
Drivetrain components (gears, bearings, transmission valves)
Brake system components (brake discs, brake pads)
Body panels (hoods, door panels)
Hardware tools and fasteners
Large machinery and molds
Case Study
Case: A Tier-1 Supplier to a Japanese Automotive Brand
Client Background: A Tier-1 supplier providing precision transmission valves and other components to a Japanese automotive brand, exporting to manufacturing sites globally. Annual shipments exceed 2 million units, with extremely high packaging quality requirements.
Challenge: The client previously used standard PE film packaging. During winter shipments via freezer containers (-25°C) to North American plants, conventional PE film became brittle at low temperatures and tore from bolt hole edges due to transport vibration, requiring entire batches to be reworked, cleaned, and repackaged. Additionally, standard films lacked anti-rust functionality — some parts showed slight corrosion during ocean transit, affecting assembly line yield rates.
Solution: We developed a custom 3-layer co-extruded high-barrier VCI anti-rust film — outer layer using low-temperature PE formulation (non-brittle at -30°C), middle EVOH barrier blocking moisture and oxygen, inner VCI layer continuously releasing anti-rust gas. Bag design was customized for tighter conformity to the valve body’s complex geometry.
Results:
Transverse tensile strength reached 43MPa with excellent toughness maintained at low temperatures
Passed IATF 16949 automotive quality management system audit
Transport damage rate reduced from 2.3% to below 0.05%
Excellent anti-rust performance — client eliminated secondary cleaning process before assembly, reducing per-unit cost by approximately 8%
No shipping damage complaints received to date.
