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Help CenterIndustrial Grade MLLDPE SP0540 for Durable Packaging and Agricultural Film
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As a specialized manufacturer in advanced polymer materials, Shanghai Yunshan Plasticizing Co., Ltd. is proud to introduce our Industrial Grade MLLDPE SP0540. Engineered in our Shanghai facilities, this metallocene-catalyzed linear low-density polyethylene is specifically formulated to meet the demanding requirements of high-performance packaging and agricultural films. We understand that durability, reliability, and cost-efficiency are paramount for your production lines, and SP0540 is our answer, delivering superior mechanical properties that translate into longer-lasting, more protective end products for your customers.
Our MLLDPE SP0540 resin is designed to excel in applications where film integrity under stress is non-negotiable. By leveraging metallocene catalyst technology, we achieve a polymer with a narrow molecular weight distribution and uniform comonomer distribution, which directly results in exceptional film properties. The core value of SP0540 lies in its ability to provide outstanding toughness without compromising on processability, allowing you to downgauge film thickness while maintaining or even improving performance—a key factor in reducing material costs and enhancing sustainability.
Detailed Product Features and Technical Advantages:
Enhanced Durability: SP0540 offers an outstanding balance of high puncture resistance and excellent tear strength (both machine and transverse direction). This makes it ideal for heavy-duty shipping sacks, industrial liners, and agricultural films that must withstand abrasion, snagging, and impact from sharp or heavy contents.
Superior Sealing Performance: The resin provides a low and consistent sealing initiation temperature (SIT) along with excellent hot tack strength. This ensures strong, reliable seals in high-speed packaging operations, reducing the risk of package failure and product loss.
Excellent Optical Properties: Films produced with SP0540 exhibit high clarity and low haze, which is crucial for consumer packaging where product visibility is a selling point, as well as for greenhouse films where maximum light transmission is desired.
Good Processability: Designed for blown film extrusion, SP0540 processes with good bubble stability and low melt pressure. It can be used in pure form or blended with other polyethylenes (like LDPE or LLDPE) to enhance the properties of existing film formulations.
Stress Crack Resistance: The material demonstrates strong environmental stress crack resistance (ESCR), which is vital for packaging chemicals, detergents, or agricultural products that may have aggressive components.
Technical Specifications Overview:
The following table outlines key typical properties of MLLDPE SP0540. Specific values can be tailored based on customer requirements.
| Property | Test Method | Typical Value |
|---|---|---|
| Melt Flow Rate (190°C/2.16 kg) | ASTM D1238 | 1.0 g/10 min |
| Density | ASTM D1505 | 0.918 g/cm³ |
| Tensile Strength at Yield (MD) | ASTM D882 | 12 MPa |
| Elongation at Break | ASTM D882 | >700% |
| 1% Secant Modulus (MD) | ASTM D882 | 220 MPa |
| Dart Drop Impact Strength | ASTM D1709 | >150 g |
| Haze | ASTM D1003 |
Benefits for Your Business:
Cost Reduction through Downgauging: The exceptional strength of SP0540 allows you to produce thinner films that perform as well as or better than thicker films made from conventional resins, leading to significant material savings.
Increased Production Efficiency: Excellent processability reduces downtime and improves line speed, while superior sealing performance minimizes waste from faulty seals.
Enhanced End-Product Quality: Deliver stronger, more reliable packaging to your clients, reducing returns and complaints. Provide farmers with more durable and clearer greenhouse or mulch films that last longer.
Formulation Versatility: Use SP0540 as a performance enhancer in blends, allowing you to upgrade your existing film products without a complete resin changeover.
Shanghai Yunshan Plasticizing Co., Ltd. is committed to providing consistent, high-quality polymer solutions from our strategic location in Shanghai, a major industrial and logistics hub. Our focus on metallocene polyolefin technology enables us to offer products like SP0540 that address the evolving needs of modern packaging and agriculture. Choosing our Industrial Grade MLLDPE SP0540 means partnering with a dedicated supplier focused on delivering tangible performance advantages and technical support. We encourage you to contact us to discuss how SP0540 can be integrated into your film production to achieve greater durability, efficiency, and market competitiveness. Request a sample today to test its superior properties firsthand.
Frequently Asked Questions (FAQ)
Q: What does "MLLDPE" stand for and how is it different from standard LLDPE?
A: MLLDPE stands for Metallocene Linear Low-Density Polyethylene. The key difference lies in the catalyst technology. Metallocene catalysts create polymers with a more uniform structure than traditional Ziegler-Natta catalysts. This results in MLLDPE having a narrower molecular weight distribution and better control over comonomer placement, which translates to superior film clarity, toughness, and sealing performance compared to conventional LLDPE.Q: Is SP0540 suitable for producing very thin films (downgauging)?
A: Absolutely. One of the primary advantages of SP0540 is its high strength-to-thickness ratio. Its excellent puncture and tear resistance allow manufacturers to reduce film gauge (thickness) while maintaining the required performance, leading to material cost savings and less plastic waste.Q: Can this resin be used on its own, or must it be blended?
A: SP0540 is versatile. It can be processed as a 100% homopolymer film where maximum toughness is required. It is also an excellent blending component. Adding a percentage of SP0540 to LDPE or LLDPE formulations can significantly upgrade the toughness and durability of the resulting film.Q: What types of packaging are ideal for SP0540-based films?
A: This grade is particularly well-suited for demanding packaging applications such as heavy-duty shipping sacks (for sand, fertilizer, chemicals), industrial liners, stretch hooder films, and flexible intermediate bulk containers (FIBCs). Its high durability protects contents during transport and storage.Q: How does SP0540 perform in agricultural film applications?
A: For agricultural films like greenhouse covers, mulch films, and silage stretch films, SP0540 offers excellent durability against wind, hail, and UV exposure (when compounded with appropriate stabilizers), high clarity for light transmission, and good stress crack resistance against agrochemicals.Q: What are the typical processing conditions for blown film extrusion with SP0540?
A: SP0540 is designed for stable processing. Typical melt temperatures range from 190°C to 230°C, depending on the equipment and blend. It processes with good bubble stability. We recommend consulting our technical datasheet and our team for specific machine setup guidance tailored to your production line.Q: Does the resin come with additives like UV stabilizers or anti-block agents?
A: The standard SP0540 grade is supplied in a natural, additive-free form to provide maximum formulation flexibility for our customers. However, we can provide custom-compounded versions with UV stabilizers, anti-block, or slip agents upon request to meet specific application needs.Q: What is the available packaging and minimum order quantity (MOQ)?
A: The resin is typically packaged in 25 kg woven bags with inner liner, palletized for safe shipping. The standard MOQ is one 20-foot container, but we encourage you to inquire about trial orders or sample availability to evaluate the product's performance first.
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