Optimize your roll stock packaging film procurement. Learn the 5 essential technical specifications—COF, OTR, and more—to ensure high-speed line efficiency.
In the procurement of flexible packaging, the quality of 卷筒包装膜 directly determines the production efficiency of downstream automated filling and packaging lines (VFFS/HFFS). Many brand owners, after switching suppliers, encounter issues such as weak seals or frequent machine jams; this is often due to overlooking the critical need to match core technical parameters.
As a custom roll stock packaging film manufacturer with over 20 years of experience, 斯坦利套餐 strongly recommends that—before placing an order—you verify whether the manufacturer has rigorously tested the following 5 key metrics:
1. Coefficient of Friction (COF)
The Coefficient of Friction determines how smoothly the roll stock packaging film slides across the metal components of the packaging machine.
- Inner Layer COF: Affects the speed at which the product is filled into the pouch.
- Outer Layer COF: Affects the grip of the film roll against the machine’s film-pulling belts.
- Standard: Typically required to fall within the range of 0.15 – 0.25. A COF that is too high can result in jerky film feeding, while one that is too low may cause the film to slip, leading to misaligned cut positions.
2. Barrier Properties (OTR & WVTR)
For products in the food, medical, or chemical sectors, Oxygen Transmission Rate (OTR) and Water Vapor Transmission Rate (WVTR) are critical factors in determining shelf life.
- Measurement Units: cc/m²·24h (Oxygen) and g/m²·24h (Water Vapor)
- Technical Approach: Through multi-layer lamination processes—utilizing materials such as aluminum foil, VMCPP, or high-performance nylon—we ensure that the film maintains exceptional physical barrier properties, even in high-humidity environments.
3. Heat Seal Strength & Seal Initiation Temperature (SIT)
Automated packaging lines operate at extremely high speeds, often allowing less than 0.5 seconds for the sealing process to take place.
- SIT (Seal Initiation Temperature): A lower seal initiation temperature means the packaging machine can operate at higher speeds without compromising seal integrity.
- Strength Testing: Drop tests simulating actual post-filling conditions must be conducted to ensure that the seals do not rupture during transit.
4. Solvent Retention & Odor Control
For food and pharmaceutical packaging, safety is a non-negotiable priority.
- Technical Advantage: Stanley Package utilizes Extrusion Lamination technology. This process requires neither solvents nor adhesives, thereby eliminating issues related to odor and chemical migration at the source.
- Compliance: We ensure that our products pass rigorous international safety standards, such as FDA and LFGB.
5. Web Tension & Flatness
If the web material experiences uneven tension during the winding process, it can result in “curling” or wrinkling of the roll stock packaging film, leading to deformed packaging products.
- 物理特性 It is essential to ensure that the film possesses excellent tensile strength and elongation at break.
Stanley Package: A Professional Manufacturer of Roll Stock Packaging Film
成立于 1998 年、 斯坦利套餐 is a leading global 定制软包装制造商. We specialize in providing global brands with a comprehensive range of 包装袋 和 卷筒包装膜.
- Production Capabilities: We operate a modern 15,000-square-meter facility equipped with 10-color electronic-shaft high-speed rotogravure printing presses, high-speed solvent-free laminators, and state-of-the-art eco-friendly extrusion coating equipment.
- Green Manufacturing: We have implemented a highly efficient RTO 系统 to treat VOC emissions, achieving truly green, low-carbon, and low-odor production.
- Global Compliance: We strictly adhere to ISO standards, and our products comply with international regulations such as FDA, BSCI, ISO, LFGB, and Prop 65.
Start Your Packaging Upgrade Journey
Are you looking for a partner that can significantly boost the efficiency of your packaging line? Or do you require more eco-friendly, solvent-free packaging solutions?
Contact the Stanley Package expert team today.
We provide not only products, but also comprehensive supply chain support—spanning the entire spectrum from material development to logistics and delivery.
