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120 μm opaque white low density polyethylene film, for packaging, agriculture, construction, medical, etc.
Low-density polyethylene (LDPE) film is a type of plastic film that is flexible, durable, and moisture-resistant.
It is commonly used in a variety of applications such as:
1. Packaging:
LDPE film is used in flexible packaging applications such as bags, shrink wrap, and stretch film.
2. Agriculture:
LDPE film is used in agriculture applications such as greenhouse covers, mulch film, and silage bags.
3. Construction:
LDPE film is used as a barrier protection material for construction sites, as well as for insulation and roofing.
4. Medical:
LDPE film is used in medical applications such as disposable gloves and medical packaging.
The main difference between low-density polyethylene film and high-density polyethylene (HDPE) film:
The difference is in their density and properties.
LDPE film has a lower density than HDPE film, which makes it softer, more flexible, and more transparent.
HDPE film, on the other hand, has a higher density which makes it more rigid, less flexible, and more opaque.
HDPE film also has a higher tensile strength and is more resistant to punctures, while LDPE film is more
conformable and easier to heat seal.
Overall, LDPE film is a versatile and cost-effective material for a variety of applications where flexibility and
moisture-resistance are important, while HDPE film is generally used in applications where strength and rigidity are more important.
| 1 | Appearance | No air bubbles / stains / breakage / impurities | Measured data (Ref.) | |
| 2 | Size | Width (mm) | 1000 -0+6 | 1004 |
| Thickness (mm) | 0.120 ± 8% | 0.116 | ||
| 3 | Max. Tension (N / 50mm) | TD | ≥ 15 | 20 |
| MD | ≥ 15 | 21 | ||
| 4 | Color difference | Colorimeter △E | ＜ 3 | ok |
| 5 | Elongation @ break (%) | TD | ≥ 230 | 876 |
| MD | ≥ 230 | 754 | ||
| 6 | Surface Tension (Corona treatment) | Dyne Value | ≥42 dyne | 48 |
120-micron opaque white LDPE film, being thicker and more robust, is more suitable for heavy-duty packaging and industrial applications
than 50-micron opaque white LDPE film. Here are some major application scenarios of 120-micron opaque white LDPE film:
1. High-Demand Packaging:
The thickness and sturdy construction of the film make it ideal for packaging high-demand products, such as sharp-edged items,
heavy-duty tools, and machine parts. The film protects the products from moisture, dust, and other environmental hazards during
transportation and storage.
2. Shipping and Storage:
The film can be used to cover pallets and crates that are being shipped or stored in a warehouse.
The high strength of the film helps to safeguard the contents of the pallet or crate from damage due to external factors like
exposure to elements, including rain or sunlight.
3. Construction Materials:
The film is used in building and construction applications to protect building materials, including hardware, steel bars, and other
construction supplies, from damage during handling and storage.
4. Agricultural Applications:
The film can be used in agricultural applications as a cover for crops or to protect farm machinery. It can help prevent damage from
weather exposure and moisture. The film can also be used as a weed barrier for gardens and flower beds.
5. Hazardous Waste Disposal:
The film is suitable for containing hazardous materials that need to be transported and disposed of safely.
The construction of the film can contain the hazardous waste and prevent accidental leaks during transportation.
There are several ways to increase the mechanical properties of Low-Density Polyethylene (LDPE) film:
1. Additives:
By adding various additives, the mechanical properties of LDPE can be enhanced.
Additives like fillers, reinforcing fibers, and elastomers can modify the properties of the base polymer and improve the properties of LDPE film.
2. Blending:
LDPE can be blended with other polymers to enhance its mechanical properties. For example, blending LDPE with linear low-density
polyethylene (LLDPE) can improve the mechanical strength and toughness of the film.
3. Coextrusion:
Coextrusion involves combining two or more layers of different polymers with different properties.
By creating different combinations of layers, the mechanical properties of the LDPE film can be enhanced. For example,
coextruding LDPE with high-density polyethylene (HDPE) can result in a film with improved mechanical strength and stiffness.
4. Annealing:
Annealing is a heating and cooling process that can enhance the mechanical properties of LDPE film.
After the film is extruded, it is heated above its melting point and then cooled slowly to promote crystallization.
This can improve the strength, stiffness, and dimensional stability of the film.
5. Orientation:
LDPE film can be oriented to align the polymer chains in a specific direction.
This can enhance the mechanical properties of the film, such as tensile strength, toughness, and tear resistance.
6. Cross-Linking:
Cross-linking is a process where the polymer chains are linked together, creating a three-dimensional network.
This can improve the mechanical properties of LDPE film, such as thermal stability, chemical resistance, and stiffness.
In summary, the mechanical properties of LDPE film can be increased by using additives, blending, coextrusion, annealing, orientation, and cross-linking. Depending on the desired properties and the production requirements, different methods can be used to enhance the mechanical properties of LDPE film.
