What is LLDPE plastic used for?
Table of Contents
What is LLDPE plastic used for?
LLDPE has penetrated almost all traditional markets for polyethylene; it is used for plastic bags and sheets (where it allows using lower thickness than comparable LDPE), plastic wrap, stretch wrap, pouches, toys, covers, lids, pipes, buckets and containers, covering of cables, geomembranes, and mainly flexible tubing.
What is the difference between LDPE?
LDPE’s structure is not crystalline. This irregularity is what gives LDPE its lower density. The forces of attraction between polymer molecules are weakened….In a nutshell: the chemistry of LDPE and HDPE.
| LDPE | HDPE |
|---|---|
| Lightweight | Lightweight |
| Good chemical resistance (variable( | Good chemical resistance (variable) |
What are the disadvantages of LDPE?
Disadvantages of LDPE
- Susceptible to stress cracking.
- Low strength, stiffness and maximum service temperature. This limits its usage in applications requiring extreme temperatures.
- High gas permeability, particularly carbon dioxide.
- Poor UV resistance.
- Highly flammable.
- High-frequency welding and joining impossible.
Is LLDPE softer than LDPE?
LLDPE is blended form of LDPE where the film has much more flexibility, tensile strength, and more conformability. It is more pliable and softer. LLDPE is used for pond liners or blended into other films to give them more flexibility and extra strength.
Where is LDPE used?
LDPE is widely used for manufacturing various containers, dispensing bottles, wash bottles, tubing, plastic parts for computer components, and various molded laboratory equipment. Its most common use is in plastic bags.
Why do HDPE and LDPE differ in density?
HDPE’s structure is crystalline. HDPE’s formidable structure gives it a higher density than LDPE. The forces of attraction between polymer molecules are strong.
What are the properties of LDPE?
LDPE (low density polyethylene) is a soft, flexible, lightweight plastic material. LDPE is noted for its low temperature flexibility, toughness, and corrosion resistance. It is not suited for applications where stiffness, high temperature resistance and structural strength are required.
What are the advantages and disadvantages of LDPE?
Low density polyethylene has good chemical resistance and electrical properties, but it has a high thermal expansion and tends to fail under mechanical and thermal stress. Glass reinforcement improves its thermal expansion, strength, rigidity and temperature resistance.
What are the advantages of LDPE?
Flexible, with a low tensile strength Essentially, this means that LDPE can withstand a lot of stretching before it actually breaks, which makes it fantastically useful for applications like plastic bags, bin bags and other plastic films.
What are the differences between LDPE LLDPE and HDPE applications?
This gives LLDPE higher tensile strength and higher impact and puncture resistance than the LDPE. It has a density of 0.91-0.94g/cm3. HDPE (High Density Polyethylene) has minimal branching of its’ polymer chains. Because it is denser it is more rigid and less permeable then the LDPE.