Your One-Stop Packaging Material Procurement & Customized Barrier Engineering Platform
At Tianchen, we run an intensive, multi-tier inspection regimen. Our specialized production, R&D, and Quality Control teams leverage modern laboratory testing to ensure all customized material properties (coefficient of friction, seal strength, and moisture transmission) precisely align with the specifications of our global client base.
By combining structural material synthesis with secondary processing, we offer an all-inclusive catalog spanning from food-grade metallized films (VMCPP/VMPET) to highly engineered shrinkable structures (POF/PVC). This eliminates sourcing friction and ensures end-to-end regulatory compliance.
Unlocking physical and chemical properties for premium high-barrier applications
VMCPP (Vacuum Metallized Cast Polypropylene) represents a critical evolution in multi-layer flexible packaging. Through advanced physical vapor deposition (PVD), high-purity aluminum wire ($99.9\%$) is vaporized in a high-vacuum chamber (operating at pressure ranges of $10^{-4}$ to $10^{-5}$ mbar) and continuously deposited onto a corona-treated cast polypropylene base film.
This microscopic deposition process creates a brilliant metallic barrier layer. Unlike biaxially oriented alternatives (VMPET or VMOPP), the cast polypropylene core structure preserves outstanding heat-seal strength, elongation, and puncture resistance. Consequently, custom VMCPP acts as an interior seal-and-barrier layer in complex laminates, neutralizing moisture ingress, vapor transmission, and photo-oxidation.
Our custom formulation services tailor the raw CPP base resin blend. By integrating specialized copolymer resins and regulating slip agent migration, we deliver optimal coefficient of friction (COF) levels alongside low-temperature seal initiation (SIT) profiles starting as low as 105°C.
| Parameter | Standard Range | Custom Capabilities |
|---|---|---|
| Thickness | 18µm - 25µm | 15µm - 50µm (Co-extruded) |
| Optical Density (OD) | 1.8 - 2.2 | Up to 3.0 (High Barrier) |
| WVTR (g/m²/24h) | < 1.5 | < 0.5 (Ultra-dry grades) |
| OTR (cc/m²/24h/atm) | < 50 | < 15 (Modified polymer matrix) |
| Al Adhesion (N/15mm) | > 1.5 | > 2.5 (Chemical treatment) |
Navigating the next generation of sustainable barrier solutions and mono-material systems
The packaging market is transitioning away from mixed-plastic structures (PET/PE or PET/CPP) due to circular economy mandates. Our roadmap centers on PP-rich, mono-material laminates utilizing BOPP + VMCPP structures. This configuration offers equivalent shelf life while matching category-5 polypropylene recycling criteria.
Delamination remains a primary failure mode in retort and liquid-fill applications. We are introducing in-chamber plasma treatments using argon-nitrogen gas configurations. This chemical modification increases the base film surface energy above 44 dyne/cm, establishing chemical bonds with the aluminum layer to achieve adhesion strengths over 2.8 N/15mm.
Tianchen is testing bio-based polypropylene resins synthesized from organic waste feeds. Our testing shows these bio-based resins behave identically during cast extrusion and metallization. This provides an effective decarbonization path for international consumer packaged goods companies aiming to reduce Scope 3 packaging emissions.
How our custom VMCPP film technologies safeguard brand integrity across global end-markets
High-fat, low-moisture snacks (such as potato chips, nuts, and infant formulas) are highly susceptible to rancidity and clumping. Our high-barrier custom VMCPP materials isolate packaged goods from ambient humidity and light. When laminated with BOPP, the high-speed sealing properties of our film support line speeds exceeding 120 bags per minute.
Moisture sensitive powder sachets, diagnostic test strips, and active pharmaceutical ingredients demand reliable barrier properties. Our specialized VMCPP variants comply with USP guidelines, providing protective shielding from light degradation and preventing active ingredient vapor absorption through heat-welded seams.
Electrostatic discharge (ESD) can destroy delicate microprocessors and integrated circuits. By carefully adjusting vacuum metallization density (ranging from 2.2 to 2.8 OD), our specialized films can be laminated into multi-layer moisture barrier bags. This protects components from electrostatic discharge and airborne moisture during sea transport.
Mitigating global supply chain risk through regulatory alignment and engineering support
Food-contact safety is non-negotiable. Zhongshan Tianchen ensures our custom VMCPP formulations satisfy demanding domestic and international food-grade standards. We undergo recurring audits to verify alignment with key regulations:
Expanding past product delivery, Tianchen offers localized technical support to assist overseas convertors and automated packaging operators. If you encounter issues like channel leakers, curl, static buildup, or tunnel wrinkles during conversion, our technical team is available to assist.
We offer remote diagnostics, parameters adjustments (e.g. seal temperature optimization, web tension control), and customizable trial reels. Our localized approach minimizes downtime and helps optimize machine productivity.
Combining automation and manufacturing scale to support global flexible packaging supply chains
Operating out of China's packaging hub in Guangdong, Zhongshan Tianchen leverages automated manufacturing infrastructure to optimize productivity. Our partner production facilities utilize high-speed cast co-extrusion machinery and multi-point closed-loop vacuum metallizers. By combining multi-layer extrusion with inline optical thickness monitors, we can maintain thickness variances within ±3%.
Our integration of manufacturing execution systems (MES) ensures traceability from initial polymer resin batch to the final slitted roll. For global buyers facing complex logistics environments, this systematic approach translates to:
Simplifying sourcing and logistics for procurement officers and category managers
Long ocean transits expose materials to heat and humidity. We wrap our rolls in heat-sealed barrier foil and package them in sturdy wooden pallets with silica desiccants. This keeps the roll moisture level stable throughout transit, protecting the chemical treatment and corona levels.
We accommodate a range of width requirements, from 300mm up to 2500mm, with core sizing options in 3-inch (76mm) or 6-inch (152mm) configurations. We can customize outer diameters and splice indicators to match your specific converting or slitting equipment.
To support buyers managing inventory costs, we offer mixed shipment options. You can consolidate multiple materials (such as high-barrier VMCPP rolls, POF center-folded films, and PVC shrink bands) into a single container, helping to reduce freight costs and inventory holding requirements.
Technical and logistics questions answered by our material specialists
Tianchen Materials
