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[China]
Trade Verify
Address: Area D, No. 218 North Huting Road, Songjiang, Shanghai
Contact name:Bryan J. Lee
Shanghai HSF Materials Technology Co., Ltd. |
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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 blue LDPE (Low-Density Polyethylene) film has several properties that make it suitable for various applications
that require a strong, durable, and protective material. Here are some of the major application scenarios for 120-micron blue LDPE film:
1. Agriculture:
The film is commonly used in the agriculture industry as a greenhouse cover to protect the plants from harsh environmental conditions
such as temperature fluctuations, wind, and pests.
2. Construction:
The film can be used for construction purposes, including as protective sheets and moisture barriers during building and renovation
works to protect surfaces such as flooring, walls, and ceilings.
3. Waterproofing:
The film can be used as a waterproofing layer in buildings and other structures, protecting interiors from leaks and water damage.
4. Packaging:
120-micron blue LDPE film is commonly used for packaging of heavy-duty industrial and construction materials that require sturdy
packaging, such as steel products, pipes, and heavy machinery.
5. Transportation:
The film can be used as a cover on trucks and trailers to protect cargo from weather elements during transportation.
6. Marine Industry:
120-micron blue LDPE film can be used in marine applications to protect boats and other marine equipment from scratches,
abrasions, and other damages.
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.
To increase the mechanical properties and enlarge the application range for LDPE film,
several approaches can be taken. Here are some of them:
1. Blending:
Blending LDPE with other polymers can improve its mechanical properties and widen its application range.
For example, blending LDPE with linear low-density polyethylene (LLDPE) can improve its tensile strength, impact resistance,
and puncture resistance. Blending LDPE with high-density polyethylene (HDPE) can improve its stiffness and resistance to stress cracking.
2. Adding additives:
Adding various additives can modify the properties of LDPE film and enhance its mechanical properties.
Additives such as fillers, elastomers, and reinforcing agents can improve the strength, durability, and flexibility of LDPE film
and widen its application range.
3. Coating:
Applying a coating to LDPE film can improve its mechanical properties and enlarge its application range.
Coatings such as acrylic, urethane, and silicone can enhance the film's barrier properties, improve its adhesion and enhance
its printing quality.
4. Orienting:
Orienting LDPE film can improve its mechanical properties and widen its application range. Orientation involves stretching the film
in either the machine direction (MD) or transverse direction (TD) to align the polymer chains and improve its strength, toughness,
and tear resistance.
5. Cross-linking:
Cross-linking can improve the mechanical properties of LDPE film and make it suitable for high-temperature applications.
Cross-linking involves modifying the polymer chains of LDPE to form a three-dimensional network that improves the film's
thermal stability, chemical resistance, and stiffness.
6. Controlling Processing Conditions:
Controlling the processing temperature, pressure, and extrusion speed during LDPE film production can improve its mechanical
properties. Optimal processing conditions can ensure consistent properties of LDPE film and enlarge its application range.
In summary, blending, adding additives, coating, orienting, cross-linking, and controlling processing conditions are all methods that can be used to increase the mechanical properties and enlarge the application range for LDPE film.
