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LDPE
Low-density polyethylene (LDPE) is a versatile and widely used plastic polymer that has become a staple in various industries. LDPE is a thermoplastic made from ethylene monomer. It has a low density, hence the name light polyethylene, and is commonly used for packaging materials, plastic bags, and even cable sheathing. This material is known for its excellent chemical resistance, making it suitable for storing and transporting a wide variety of materials.
LDPE, which stands for low-density polyethylene, is a thermoplastic material synthesized through the polymerization of ethylene monomers. Its unique chain structure and low density provide a host of useful properties and contribute to its position as one of the most widely used plastics worldwide. To create LDPE, ethylene monomers are subjected to high pressure and temperature in a process called polymerization.
Once produced, LDPE is highly processable and can be melted and reshaped many times without losing its desirable properties. In addition, it is resistant to moisture, chemicals and UV rays, making it a strong and durable material. As a result, LDPE is commonly used to make films, sheets, and containers because of its flexibility and transparency.
Characteristics
Density | 0.923 g/cm3 |
Molding shrinkage | 1.9% |
Tensile strength | 10.5 MPa |
Shore hardness | 49 Shore D |
Tensile impact strength | 286 kJ/m2 |
Applications
In general, light and heavy polyethylene are widely used in the packaging industry.
Low density polyethylene (LDPE) is mostly used in the production of containers, pipes, plastic bags for computer parts and various laboratory equipment. The most common use of low-density polyethylene is plastic bags.
Other users of light polyethylene include the following
Use in household appliances
Production of flexible toys
Production of agricultural films
Production of wiring and cables
Used in cable sheathing
Due to its good flexibility and low cost, this material is used for packaging medicine bottles, lids, liners, garbage bags, etc. Light polyethylene is also used to make water pipes and hoses due to its plastic properties and less water absorption. do
Environmental impact and sustainability of LDPE
Recycling LDPE helps reduce waste and minimize its impact on the environment. The recycling process involves collecting LDPE waste, sorting and processing it into flakes or pellets.
These recycled LDPE materials can be used to produce new products such as plastic bags, containers or even new LDPE films. Recycling LDPE not only conserves resources, but also reduces the carbon footprint associated with the production of new materials.
However, it is important to note that not all LDPE products are recyclable. Some products may contain additives or multiple layers that can complicate the recycling process. Checking with local recycling centers is essential to ensure proper disposal and recycling of LDPE products.
Packing
LDPE is packed and supplied in 25 kg bags.
HDPE
High Density Polyethylene (HDPE) or Polyethylene High Density (PEHD) is a type of thermoplastic polymer with wide range of applications. In terms of volume, High-density polyethylene (HDPE) ranks as the third most abundant commodity plastic material globally, following polyvinyl chloride and polypropylene. Its exceptional tensile strength, high strength-to-density ratio, impact resistance, and elevated melting point set HDPE apart as a preferred material. HDPE is extensively recycled and is designated with the recycling symbol no. “2”, indicating its recyclability.
Characteristics
The molecular structure of HDPE consists of repeating ethylene monomer units, forming a polyethylene chain. HDPE is often known as a “semi-linear” chain. Compared to low-density polyethylene, high-density polyethylene resin has a higher proportion of crystalline regions, contributing to its distinct characteristics.
High-density polyethylene (HDPE) exhibits minimal branching, resulting in enhanced intermolecular forces and tensile strength compared to lower-density polyethylene. It is characterized by increased hardness, opacity, and a higher tolerance for elevated temperatures.
Available Grades
Cast Film | F0863 |
PCGF0863 | |
FI0851P | |
Pipe | P6006 |
F4520 | |
B5823 | |
P5510 | |
Blow Molding | F00752AM |
FJ00952 | |
FI1157 | |
Injection | M200050 |
M300054 | |
CC254 | |
M80063S |
Applications
HDPE demonstrates resistance to a wide range of solvents and finds diverse applications in various industries, including but not limited to: telecommunication ducts, containers, laundry detergent bottles, milk jugs, vehicle fuel tanks, plastic lumber, folding tables, folding chairs, storage sheds, bases for portable basketball systems, plastic bags, containment of specific chemicals, chemical-resistant piping systems, heat-resistant fireworks display mortars, geothermal heat transfer piping systems, natural gas distribution pipe systems, domestic water supply pipes, coaxial cable inner insulators, root barriers, corrosion protection for steel pipelines, refillable bottles, ballistic plates, and more. In sanitary landfills, HDPE is utilized as cell liners to create a chemical-resistant barrier, preventing soil and groundwater pollution from solid waste liquids. HDPE is extensively used in wood-plastic composites, composite wood, and recycled polymers play a significant role in this application. Additionally, HDPE is prevalent in the polytechnics industry. HDPE mortars are favored over steel or PVC tubes due to their superior durability and safety features.
Environmental impact and sustainability of HDPE
HDPE is recognized as a more environmentally conscious plastic option due to its ability to be recycled and its long-lasting nature. Recycled HDPE finds applications in various sectors such as plastic furniture, automotive components, and construction materials like plastic lumber. Despite its non-biodegradable nature, the recyclability of HDPE enhances its sustainability profile. Improper disposal of HDPE items can contribute to plastic pollution and waste accumulation. To address these environmental concerns, it is essential to focus on increasing the recycling rates of HDPE, exploring alternative sustainable sources, and advocating for responsible waste management practices.
Packing
Polyethylene (HDPE) available for purchase in 25 kg bags.
PET
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GPPS/HIPS/EPS
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ABS
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SBR/PBR
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PVC
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PP
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LLDPE
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