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As a specialized manufacturer in advanced polymer materials, Shanghai Yunshan Plasticizing Co., Ltd. is proud to introduce our SP0540 MLLDPE Resin – a high-performance material engineered specifically for demanding film extrusion applications. Located in the industrial hub of Shanghai, we leverage cutting-edge metallocene catalyst technology to produce resins that deliver superior mechanical properties, directly addressing the needs of film converters seeking enhanced durability and reliability. Our SP0540 grade stands out for its exceptional balance of toughness and processability, making it an ideal choice for producing films that must withstand rigorous handling and environmental stress.
The core value of SP0540 lies in its molecular structure, which is precisely controlled to offer a significant leap in performance over conventional LLDPE. This resin is formulated to provide films with outstanding puncture resistance, a critical property for applications where product integrity is paramount. Whether you are manufacturing heavy-duty shipping sacks, agricultural films, or premium packaging, SP0540 provides the robust foundation needed to reduce film failures and enhance end-product performance.
Detailed Product Features and Technical Advantages:
- Superior Mechanical Strength: The metallocene catalyst system creates a homogeneous polymer with a narrow molecular weight distribution and uniform comonomer incorporation. This results in films with exceptional tensile strength, tear resistance, and most notably, high puncture resistance. The film can absorb more energy before failure, leading to fewer ruptures during filling, transportation, and storage.
- Excellent Sealing Performance: SP0540 offers a low and consistent sealing initiation temperature (SIT) along with a broad sealing window. This ensures strong, hermetic seals even on high-speed packaging lines, reducing waste from leakers and improving line efficiency.
- Enhanced Optical Properties: Despite its high toughness, this MLLDPE resin maintains good clarity and low haze, which is advantageous for packaging applications where product visibility is important. It also exhibits low gel content, contributing to a smooth, defect-free film surface.
- Outstanding Processability: The resin is designed for smooth extrusion on both blown and cast film equipment. It exhibits good melt stability, reduced neck-in, and minimal die lip buildup, allowing for stable operation at high outputs and easier processing overall.
- Durability in Harsh Conditions: Films made from SP0540 maintain their flexibility and toughness across a wide temperature range, performing reliably in both cold storage environments and under sun exposure, making it suitable for agricultural and outdoor applications.
Technical Specifications Overview:
| Property | Typical Value / Description | Test Method |
| Base Resin Type | Metallocene Linear Low-Density Polyethylene (MLLDPE) | - |
| Melt Flow Rate (190°C/2.16kg) | d>1.0 - 4.0 g/10 min (Customizable) | ASTM D1238 |
| Density | 0.915 - 0.925 g/cm³ | ASTM D1505 |
| Puncture Resistance (Film) | Significantly higher than conventional LLDPE | ASTM D5748 / Internal |
| Tensile Strength at Yield (MD) | Customizable based on formulation | ASTM D882 | Elongation at Break | High (>600%) | ASTM D882 |
| Recommended Film Gauge | 15 - 150 microns | - |
| Additives | Available: Slip, Antiblock, UV Stabilizers, Antioxidants | - |
Benefits for Our Customers:
- Down-gauging Potential: The high strength of SP0540 often allows manufacturers to reduce film thickness while maintaining or even improving performance, leading to significant material cost savings and reduced environmental footprint.
- Reduced Downtime and Waste: Excellent processability and melt stability contribute to fewer line breaks, less off-spec material, and higher overall equipment effectiveness (OEE).
- Improved End-Product Quality: Films exhibit superior durability, leading to fewer customer complaints about bag failures, punctures, or seal leaks, enhancing your brand's reputation for reliability.
- Formulation Flexibility: SP0540 can be used as a homopolymer film or as a high-performance component in blends with LDPE, LLDPE, or HDPE to upgrade the properties of existing film structures.
Shanghai Yunshan Plasticizing Co., Ltd. operates with a commitment to quality and consistency, supplying resin that meets stringent internal specifications. Our production facility in Shanghai is equipped with advanced polymerization and compounding technology, ensuring every batch of SP0540 delivers the promised performance. We understand that reliable supply is critical for your production planning, and we maintain robust inventory and logistics systems to support your operations. By choosing SP0540, you are not just buying a resin; you are investing in a partnership focused on enhancing your film products' performance and your operation's profitability. Contact our technical sales team today to discuss your specific application requirements, request samples for testing, or to learn more about how our high-puncture-resistant MLLDPE resin can become a valuable asset in your product portfolio.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between SP0540 MLLDPE and standard LLDPE?
A1: The primary difference lies in the catalyst technology and molecular structure. SP0540 uses a metallocene catalyst, which creates a more uniform polymer chain with precisely placed short-chain branches. This results in a film with significantly better toughness, puncture resistance, and optical clarity compared to films made from Ziegler-Natta catalyzed LLDPE, often without sacrificing processability.
Q2: Can SP0540 be processed on my existing blown film line?
A2: Yes, in most cases. SP0540 is designed for compatibility with standard LDPE/LLDPE blown film extrusion equipment. It may require slight adjustments to processing temperatures (typically running slightly cooler) and bubble cooling parameters due to its different rheology. Our technical team can provide specific startup guidelines.
Q3: Is this resin suitable for food contact applications?
A3: Specific grades within the SP0540 series can be formulated to meet relevant food contact regulations. Please inquire about our food-contact compliant options, and we can provide the necessary documentation and formulation details based on the intended region of use.
Q4: What is the typical shelf life of the resin, and how should it be stored?
A4: The resin has a shelf life of at least 12 months when stored in its original, unopened packaging in a cool, dry, and clean environment away from direct sunlight, extreme heat, and moisture. We recommend using a first-in, first-out (FIFO) inventory system.
Q5: Do you offer custom formulations with additives like slip or anti-block?
A5: Absolutely. We understand that different film applications have specific needs. We can customize the SP0540 resin with various additive packages, including different types and levels of slip agents (e.g., erucamide, oleamide), antiblock (e.g., silica, talc), antioxidants, and UV stabilizers. Please discuss your requirements with us.
Q6: Can SP0540 be blended with other polyethylenes?
A6: Yes, it is commonly used as a performance enhancer in blends. Adding 20-50% of SP0540 to conventional LLDPE or LDPE can dramatically improve the puncture and tear resistance of the resulting film. We can provide guidance on optimal blend ratios for your target properties.
Q7: What is the minimum order quantity (MOQ) and available packaging?
A7: Our standard MOQ is one pallet. The resin is typically available in 25 kg multi-layer paper bags with polyethylene liner. Bulk bag (ton bag) options are also available for larger volume orders, which can improve handling efficiency and reduce packaging waste.
Q8: Do you provide technical support or sample material for trials?
A8> We strongly encourage trials. We are happy to provide sample quantities of SP0540 for you to evaluate on your equipment. Our technical support team is available to assist with processing recommendations and to help analyze the performance of trial films to ensure the resin meets your expectations.
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