Low Density Polyethylene (LDPE)
Low Density Polyethylene LDPE is part of the Polyethylene family of thermoplastics which include HDPE and MDPE. LDPE has the least dense molecular structure, when ethylene is polymerized it is straight polymer chains, with branches from a main chain, LDPE has the most branching as so is least dense.
LDPE, HDPE, LLDPE, PP are polyolefins, which are high molecular weight hydrocarbons, they are some of the only plastics existing that have a lower specific gravity, weighing less than water. They are susceptible to oxidation and UV damage.
LDPE is lighweight and flexible, so often used in the manufacture of various containers, dispensers, squeeze bottles, tubing, plastic parts and moulded elements of computers and equipment. On constructions sites and factories it os often used as key element to pallets packing and shipping as a shrink wrap.
[edit] Related articles on Designing Buildings
- Glass reinforced plastic GRP
- Glass fibre reinforced plastic
- High Density Polyethylene (HDPE)
- High Density Polypropylene (HDPP)
- Polycarbonate plastic
- Polypropylene in the construction industry.
- Plastic cladding
- Plastic coating market
- Plastic in construction
- Plastic in concrete
- Recycled plastic bridges
- Wood plastic composites market for construction
Featured articles and news
The history of building regulations
A story of belated action in response to crisis.
Moisture, fire safety and emerging trends in living walls
How wet is your wall?
Current policy explained and newly published consultation by the UK and Welsh Governments.
British architecture 1919–39. Book review.
Conservation of listed prefabs in Moseley.
Energy industry calls for urgent reform.
Heritage staff wellbeing at work survey.
A five minute introduction.
50th Golden anniversary ECA Edmundson apprentice award
Showcasing the very best electrotechnical and engineering services for half a century.
Welsh government consults on HRBs and reg changes
Seeking feedback on a new regulatory regime and a broad range of issues.
CIOB Client Guide (2nd edition) March 2025
Free download covering statutory dutyholder roles under the Building Safety Act and much more.
AI and automation in 3D modelling and spatial design
Can almost half of design development tasks be automated?
Minister quizzed, as responsibility transfers to MHCLG and BSR publishes new building control guidance.
UK environmental regulations reform 2025
Amid wider new approaches to ensure regulators and regulation support growth.
The maintenance challenge of tenements.
BSRIA Statutory Compliance Inspection Checklist
BG80/2025 now significantly updated to include requirements related to important changes in legislation.