Tiếng Việt
中文 (中国)
Two of its common structures are low-density polyethylene (LDPE) and high-density polyethylene (HDPE), which vary in terms of structure, density, and characteristics. They are widely used in regular domestic applications. In the paragraphs below, you will understand the difference between HDPE and LDPE.
1. LDPE film
Structure of LDPE
- It is abbreviated from low-density polyethylene.
- It has a natural, milky-white color and is translucent.
- It is resistant to chemicals and has a strong impact.
- It has a good stress crack resistance, and a good vapor barrier as well.
- It has excellent alcohol barrier properties too.
2. HDPE film
Structure of HDPE
- It is abbreviated from high-density polyethylene.
- Like LDPE, its color is also a natural milky white, and as per its density, it can be translucent or semi-translucent.
- It has a very strong impact as well, and excellent chemical resistance.
- It is resistant to stress cracking but has a poor gas barrier.
- Like its counterpart, it has a good moisture barrier.
3. Factors of Differentiation
| LDPE | HDPE | |
| Structure | It has a good branching structure, including both short and long chains. The chains are not packed into the crystal structure, and this results in mediocre intermolecular forces. | It has a very low amount of branching and has strong intermolecular forces. |
| Density | It has a low density, of course, the range being between 0.910 and 0.925 gm/cm3. | It obviously has a high density, the value being within the range of 0.941 to 0.965 gm/cm3. |
| Applications |
|
|
| Strength |
It has a high ductile nature and mediocre tensile strength. It is not puncture-resistant. |
It has high tensile strength. It is dense, has a high resistance to puncture, and is resistant to UV rays too. |
| Production | It is produced by means of free radical polymerization. |
It is produced by using catalysts, like silica, metallocene, or chromium. |
| Flexibility |
It is very flexible, and conforms well to surfaces, though it is soft and less rigid, compared to HDPE. |
It is also flexible and stretches well, but not as much as LDPE; it is tougher, less malleable, and more rigid. |
| Melting Point | The average melting point is 221 to 239 °F. | The average melting point is 248 to 356 °F. |
Read more: Polyethylene film vs Polypropylene film – Which is better?
4. Points to Remember
- Both LDPE and HDPE have a host of common properties.
- Both are sterilized through gamma radiation.
- While using them in the manufacturing process, they are thermoformed.
- HDPE is approved by the FDA, hence it passes the safety factor.
- LDPE is also reviewed to be safe, as it is used to manufacture food packaging.
- Recycling them both is done using a method called pyrolysis.
5. Why is Amiba company always the first choice?
- More than 30 years of experience in the plastic and complex film packaging industry
- Provide products with high quality
- Large production capacity
- Cost savings
- Large warehouse system, fast delivery
- Diverse payment policy
- Being a close partner of many large companies and large enterprises
- Staff dedicated to the job
- The production environment is safe for humans and the environment
Amiba company’s products are widely used by ensuring quality management, environmental protection, and integrated ISO standards:
– It has been assessed and certified to meet the requirements of Hazard Analysis and Critical Control Point (HACCP) Codex Alimentarius
– It has been assessed and certified to meet the requirements of Food Safety System Certification (FSSC) 22000
– It has been assessed and certified to meet the requirements of ISO 22000: 2018
– It has been assessed and certified to meet the requirements of ISO 9001: 2015
If you need to learn more about LDPE film and HDPE film or need advice regarding placing an order or getting a price quotation, please call now +84 966 290 555 for the best support.
CONTACT US
Address: Lot 8, Street Number 16, Viet Nam-Singapore II-A Industrial Park, Tan Uyen Town, Binh Duong Province, Viet Nam.
Office Tower: 25 Ngo Quyen Street, Ward 10, District 5, Ho Chi Minh City
Tel: +84 966 290 555
Email: info@amibapack.com
Website: www.amibapack.com
