What is LLDPE? Linear low density polyethylene (LLDPE) is a polymer that is one of the most diverse and commonly used in the modern industry of polymers. Being an important constituent of the linear polyethylene family, this thermoplastic presents the best toughness, stretch, and chemical stability combination. As a member of the contemporary petrochemical innovation, LLDPE polymer is the most important in the sphere of packaging, manufacturing, and construction, among other areas. In this article, we will investigate all details about linear low-density polyethylene LLDPE. If you need constant help, contact us now.
What Is Linear Low-Density Polyethylene (LLDPE)?
Linear Low Density Polyethylene is a form of polyethylene that has a linear molecular structure with short branches that are uniform. Its production is through a copolymerization method, which involves the combination of ethylene with other longer-chain alpha-olefins like butene, hexene, or octene. What is produced is a material that has excellent tensile strength, better puncture resistance, and better flexibility in comparison to LDPE (Low-Density Polyethylene).
This one is usually synthesized in cases of low pressure in the presence of Ziegler-Natta or metallocene catalysts, which form homogenous molecular chains and a close-range molecular weight distribution. LLDPE threads offer a combination of performance and lightweight capabilities with a density of 0.910 to 0.940 g/cm³, and an approximate melting point of 180 °C. The above characteristics and density of LLDPE make the linear low density polyethylene materials suitable to satisfy the needs of the highest demands in various industries.
Polymer Characteristics in Detail
Linear Low Density Polyethylene has numerous short side-branches usually due to ethylene copolymerization with other higher alpha-olefins -olefins including butene, hexene, or octene. Here are some of the linear low-density polyethylene material characteristics:
- As compared to the traditional Low Density Polyethylene (LDPE), LLDPE lacks long-chain branching, and therefore it has a different molecular structure and performance profile.
- The tensile strength of LLDPE is usually high, and hence it is used in severe industrial applications where durability and load-bearing performance are a consideration.
- Most grades of the LLDPE are designed to have a medium range of modulus of elasticity to offer an effective range in terms of stiffness and flexibility.
- This thermoplastic is light, and it exhibits desirable impact, cracking, and overall mechanical damage resistance in application under normal service.
- Good resistance to most chemicals is also exhibited by LLDPE, and this is one of the reasons why it finds a wide use in packaging, films, pipes, and molded parts.
- It is part of the linear polyethylene family and comes in several grades and contains virgin and recycled LLDPE, which provide varying mechanical and processing properties.
- The virgin LLDPE tends to offer more stable performance and characteristics than the recycled, which may be essential in key or qualified applications.
Polymer Structure and Characteristics
The special construction of LLDPE polymer as linear chains with controlled short branching makes it have properties that are far better than the traditional forms of polyethylene. In comparison to LDPE, which contains long and irregular branches, LLDPE characteristics are:
- Increment in tensile strength and rigidity.
- Increased stress crack strength and elasticity.
- Increased impact and puncture resistance.
- Better resistance to heat sealing.
- Reduced molecular weight distribution, which brings about stable performance.The average LLDPE density lies between 0.915 to 0.940 g/cm³ and its melting temperature remains close to 180°C, all of which is important in defining processing and final application properties.
- Its tensile force (Approximately 81 MPa) and modulus of elasticity (Approximately 4700 MPa) will make it viable in projects that demand strength and stability to the mechanism.
LLDPE Granules And Grades
| GRADE | PRODUCER | MFR | DENSITY | DATASHEET |
|---|---|---|---|---|
| 18B01 | BAKHTAR | 0.8-1.2 | 0.916 – 0.920 | |
| 22B02 | BAKHTAR | 0.4-0.6 | 0.920 – 0.924 | |
| 0220KJ | AMIRKABIR | 2.4 | 0.921 | |
| 0220AA | AMIRKABIR, SHAZAND | 2.2 | 0.920 | |
| LL 235F6 | JAM | 0.5 – 0.7 | 0.920 – 0.924 | |
| LL235F7 | JAM | 0.7 | 0.922 – 0.925 | |
| 22501AA / 22501KJ | JAM | 0.95 | 0.9220 | |
| 22502AA | JAM | 1.80 | 0.922 | |
| 32604 | JAM | 4 | 0.932 | |
| 18B03 | BAKHTAR | 2.8-3.2 | 0.916-0.920 | |
| 18B04 | BAKHTAR | 4-5 | 0.915-0.918 | |
| 22B01 | BAKHTAR | 0.8-1.2 | 0.920-0.924 | |
| 22B03 | BAKHTAR | 2.8-3.2 | 0.920-0.923 | |
| 22B01 KJ | BAKHTAR | 1±0.2 | 0.922±0.002 | |
| 22B02 KJ | BAKHTAR | 2±0.2 | 0.922±0.002 | |
| 20BF5 | BAKHTAR | 0.5±0.1 | 0.920±0.002 | |
| 22501AA | JAM | 0.95 | 0.922 | |
| 0209AA | Amir Kabir | 0.9 | 0.920 |
LLDPE Granules, Industrial and Export-Grade
Shobeir Shimi Low-Density Polyethylene (LLDPE) granules are developed to be trusted in the packaging, film, pipe, cable, and rotational molding duties. The LLDPE that we obtain is of superior quality in the market in order to maintain steadiness in the quality, consistency in the processing of the product, and high mechanical strength at each batch. We offer numerous LLDPE grades that are applicable in:
- Movie extrusion of stretch film, agricultural film, liners, and packaging.
- Irrigation, water handling, and industrial flow line pipe and hose extrusion.
- Tanks, containers and large hollow parts and rotation molding.
- Where the performance of wire and cable jacketing is dependent on flexibility and insulation.
LLDPE materials are offered in all:
- Big and small bulk orders.
- 25 kg and jumbo bags are some of the several packing choices.
- Extensive technical documentation and quality reports on request.
LLDPE Supplier and Exporter Worldwide
Shobeir Shimi assists its customers in the local and global markets in the quick processing of orders and export legalization. Our logistics department utilizes shipments using the most critical ports in the Middle East to ensure timely delivery at the most affordable costs.
Reasons to select our LLDPE Materials
Here are reasons to choose us in Shobeir Shimi:
- Consistent quality and repeatability of the linear low-quality processing behavior of all grades.
- Technical service to assist in choosing the appropriate LLDPE grade of film, pipe or molding and cable.
- Project-based and ongoing supply contracts that are flexible.
Documentation and Certifications of LLDPE
To maintain the safe use and export/import, we will supply all documents on each shipment of LLDPE. Our customers are able to order full, updated files of every grade that they buy. Documentation is available in the form of:
- Technical Data Sheet (TDS) having essential physical, mechanical, and processing characteristics.
- Handling, storage and safety guidelines as contained in the Safety Data Sheet (SDS/MSDS).
- Each batch will be issued with a Certificate of Analysis (COA) indicating that the product is as stated in the agreed terms.
- Export shipment packing list, invoice and Certificate of Origin when necessary by the customs or the buyer.
All the papers are drafted in plain English and can be sent electronically before loading. Our team is also able to match documentation to particular regulatory or customer requirements of food-contact, packaging, pipe, cable, or other use on request.
Where to Buy LLDPE
In the sourcing of linear low density polyethylene, the quality, traceability and reliability are the most important. Shobeir Shimi Company is one of the main suppliers and distributors of LLDPE grades in Iran and other countries that offer high quality polymers of major manufacturers such as JAM, Bakhtar, Amir Kabir and Shazand. The grades that we have are:
LLDPE 32604, 22502AA, LL235F6, 0220AA, LL18B01, 22B02KJ, 18B04, and the list is extensive, each of them has a comprehensive technical datasheet. Companies can also collaborate with Shobeir Shimi to acquire uniform quality, which is competitive.
Ready to Purchase LLDPE Granules or Resin?
When you need a supplier of Linear Low-Density Polyethylene that you can rely on to provide quality products in time, Shobeir Shimi is willing to offer its services to your business. We will assist you in selecting the appropriate grade of LLDPE in film, pipe, cable, or molding projects, as well as budgeting a safe supply of local production and export projects.
Call Shobeir Shimi now to talk over your LLDPE needs personally, to ask us to provide current prices, and to give you the technical information on those grades that best suit your process.
Processing Methods for LLDPE
Linear low-density polyethylene processing can be adapted to numerous manufacturing techniques due to its controllable viscosity and excellent flow at lower temperatures. The most common LLDPE processing methods include:
- Film Extrusion:
Used for manufacturing packaging products, stretch and shrink films, plastic bags, and agricultural films. Thanks to its balance of strength and elongation, LLDPE film grades are preferred for flexible and high-performance packaging. - Injection Molding:
A rapid process to produce household containers, closures, caps, and appliance components. During molding, the LLDPE temperature range is optimized for precision and smooth surface quality. - Rotational Molding:
Suitable for large, hollow, and seamless structures such as tanks, bins, and industrial containers. This technique ensures even polymer distribution and stress-free parts. - Pipe Extrusion:
Used in the production of LLDPE pipes for irrigation, drainage, and fluid transport. The material’s environmental stress crack resistance and durability make it ideal for infrastructure pipelines. - Wire & Cable Insulation:
Due to its excellent electrical insulation and moisture resistance, LLDPE insulation is widely used in communication cables, power wires, and battery housings.
These processes demonstrate the versatility and adaptability of linear-low density polyethylene across various technical fields.
Uses and Applications of Linear Low-Density Polyethylene
The applications of low density LLDPE polyethylene in various industries are many. The polymer is appreciated for its strength, chemical resistance, as well as flexibility, which allow it to be used in:
1. Plastic films and sheets
LLDPE is a superstar in the production of plastic films, sheets, and wraps. Its flexibility and strength make it the go-to material for various packaging solutions like plastic bags, stretch films, shrink films, and liners. Whether it’s protecting goods during shipping or keeping food fresh, LLDPE’s ability to form thin, durable layers ensures it meets the demands of modern packaging. Thanks to its tensile strength and resistance to tearing, industries rely on this material to create reliable and cost-effective packaging options.
2. Plastic pipes
Looking for a material that can handle tough jobs like water and gas distribution? LLDPE shines in the manufacturing of plastic pipes. Its outstanding chemical resistance and durability make it perfect for applications such as sewage systems, irrigation lines, and chemical transfer pipes. With a structure that withstands pressure and environmental stress, LLDPE pipes offer a long-lasting solution for fluid transport in both residential and industrial settings.
3. Plastic Bottles And Containers
LLDPE is employed in crafting bottles and containers for everyday liquids like detergents, shampoos, and household cleaners. Its flexibility allows it to be molded into various shapes, while its excellent moisture barrier properties keep contents safe and secure. Next time you reach for your shampoo or dish soap, chances are LLDPE is playing a key role in keeping it contained and protected! This material’s lightweight nature also makes it a practical choice for manufacturers and consumers alike.
4. Geomembranes
When it comes to large-scale waterproofing and lining projects, LLDPE steps up as the material of choice for geomembranes. These large plastic sheets are essential in construction, landfills, and environmental applications, preventing leaks and protecting the environment. With a density range of 0.910 to 0.940 g/cm³ and high resistance to chemical damage, LLDPE geomembranes ensure durability and reliability in even the toughest conditions.
5. Wire And Cable Insulation
LLDPE’s excellent electrical insulation properties make it a standout option for insulating wires and cables in the electrical and telecommunications industries. Its ability to resist moisture and maintain structural integrity under varying temperatures ensures safe and efficient performance. From power lines to communication cables, LLDPE provides a protective layer that keeps everything running smoothly.
6. Toys And Household Items
LLDPE’s toughness, flexibility, and chemical resistance make it a popular pick for manufacturing toys, kitchenware, and other household items. Whether it’s a durable toy for kids or a reliable storage container in your kitchen, this material delivers safety and longevity. Its ability to withstand impact and resist cracking ensures these products can handle the wear and tear of daily use.
7. Automotive Applications
In the automotive world, LLDPE proves its worth by contributing to components like fuel tanks, interior trim, and bumper parts. Its impressive impact resistance and durability allow it to endure the stresses of the road, while its lightweight nature helps improve fuel efficiency. Whether it’s absorbing shocks or maintaining structural integrity, LLDPE is a trusted ally in vehicle manufacturing.
These are just a few of the most important low density polyethylene properties and uses. This versatile and wonderful material is designed to be used in many projects. Once you use this product, you will realize its key features and benefits.
Agricultural films are products that are not easily manufactured. By using lldpe, you can transform the manufacturing and design process of this product. Apart from this, these products can be used in the design of various geomembranes and industrial liners. These insulating sheets are designed to significantly prevent energy waste. This has also multiplied the importance of these products. By purchasing the best and highest quality lldpe models, you can achieve the desired results and efficiency.
Also, companies active in the field of designing various types of stretch packaging and new toys are interested in using lldpe. This material has good flexibility and can be formed into various shapes and designs. As a result, you can achieve the desired efficiency by using it.
Differences between LLDPE, LDPE and HDPE
Here is a comparison of linear low density polyethylene properties with other types:
| Property / Aspect | LLDPE | LDPE | HDPE |
|---|---|---|---|
| Molecular structure | Linear backbone with short, controlled branches | Highly branched, less regular structure | Mostly linear chains with very few branches |
| Density | Lower than HDPE, slightly higher than many LDPE grades | Low density | Highest density among common polyethylene grades |
| Flexibility | Very good flexibility, especially in thin films | Very flexible and soft | More rigid and less flexible |
| Tensile and puncture strength | Higher tensile strength and puncture resistance than LDPE in films | Lower tensile and puncture resistance compared to LLDPE in films | High tensile strength, especially in rigid parts |
| Rigidity | Less rigid than HDPE | Least rigid (softest) | Most rigid |
| Typical film thickness use | Strong, thin films where toughness and stretch are needed | General purpose films where softness and clarity are important | Less common for very thin stretch films |
| Main flexible uses | Stretch films, agricultural films, flexible packaging | General packaging films, bags, foils | Limited flexible use compared to LLDPE |
| Main rigid uses | Some molded parts and components where flexibility is required | Limited rigid applications | Pipes, containers, blow molded and injection molded rigid products |
Advantages of Using LLDPE
The decision to manufacture LLDPE resin has numerous engineering and economic advantages:
- Great cracking and environmental stress resistance.
- Very flexible and easy to process.
- Good puncture, impact and tear resistance.
- Credible moisture and chemical stability.
- Energy efficiency in the production process; this is because of reduced processing temperature.
- High thermal and physical stress life.
Such linear low density polyethylene properties can be improved with pigments or additives to enhance the end-use of UV resistance, color, or mechanical properties.
Conclusion
Linear Low-Density Polyethylene (LLDPE) combines toughness, flexibility and chemical resistance, making it a reliable choice for films, pipes, cables and molded products in many industries. By selecting high‑quality LLDPE grades with proven technical documentation, converters and manufacturers can improve product performance, reduce processing issues, and optimize costs in both local and export projects. For updated prices, grade recommendations, and detailed support on packaging, agricultural, pipe, or cable applications, contact our team to discuss the best LLDPE solution for your business.