Play Video
1
7. production of low density and high density polyethylene (HSC chemistry)
7. production of low density and high density polyethylene (HSC chemistry)
::2011/12/14::
Play Video
2
What is LDPE?
What is LDPE?
::2009/10/07::
Play Video
3
Polyethylene PE Film - How it
Polyethylene PE Film - How it's made
::2012/11/30::
Play Video
4
Bags, Film, Sheet, high and low density polyethylene washing and drying Line
Bags, Film, Sheet, high and low density polyethylene washing and drying Line
::2012/05/02::
Play Video
5
110,000 Ton/Year Low Density Polyethylene (LDPE) Plant for Sale
110,000 Ton/Year Low Density Polyethylene (LDPE) Plant for Sale
::2013/07/03::
Play Video
6
MYOG low-density polyethylene (LDPE) tarptent - Part 1
MYOG low-density polyethylene (LDPE) tarptent - Part 1
::2010/08/16::
Play Video
7
Polymer Detectives - Science Olympiad - Video 2 - HDPE, LDPE, PP
Polymer Detectives - Science Olympiad - Video 2 - HDPE, LDPE, PP
::2012/01/09::
Play Video
8
MYOG low-density polyethylene (LDPE) tarptent - Part 2
MYOG low-density polyethylene (LDPE) tarptent - Part 2
::2010/08/16::
Play Video
9
Wicketed Bread Bags -  Low Density Polyethylene
Wicketed Bread Bags - Low Density Polyethylene
::2014/07/23::
Play Video
10
Crystalisation of Low Density Polyethylene (LDPE)
Crystalisation of Low Density Polyethylene (LDPE)
::2009/05/18::
Play Video
11
Low-density polyethylene
Low-density polyethylene
::2014/10/10::
Play Video
12
Low Density Polyethylene Disposable Gloves 500Box/2Carton/20Case
Low Density Polyethylene Disposable Gloves 500Box/2Carton/20Case
::2012/07/29::
Play Video
13
Low Density Polyethylene (LDPE) Uses
Low Density Polyethylene (LDPE) Uses
::2014/10/26::
Play Video
14
Low Density Polyethylene (LDPE) Market - Latest Research Report, 2014 - 2020
Low Density Polyethylene (LDPE) Market - Latest Research Report, 2014 - 2020
::2014/11/06::
Play Video
15
hdpe high density polyethylene
hdpe high density polyethylene
::2014/04/04::
Play Video
16
Hdpe Scrap,Hdpe Waste,High Density Polyethylene Scrap
Hdpe Scrap,Hdpe Waste,High Density Polyethylene Scrap
::2013/07/30::
Play Video
17
Das Band - Fine Polyethylene Extruder.
Das Band - Fine Polyethylene Extruder.
::2013/01/03::
Play Video
18
Polyethylene
Polyethylene
::2010/11/30::
Play Video
19
Double colors strip Film Blowing machine(HDPE / LDPE film)
Double colors strip Film Blowing machine(HDPE / LDPE film)
::2012/10/29::
Play Video
20
Blown Film Extrusion Process for Extrusion of LDPE | Blown Film Extrusion Machine Manufacturers
Blown Film Extrusion Process for Extrusion of LDPE | Blown Film Extrusion Machine Manufacturers
::2014/10/08::
Play Video
21
Stretching of LDPE between crossed polarisers
Stretching of LDPE between crossed polarisers
::2009/03/04::
Play Video
22
Industrial Film LDPE Film Recycling Line Malaysia
Industrial Film LDPE Film Recycling Line Malaysia
::2013/09/04::
Play Video
23
What is HDPE?
What is HDPE?
::2009/09/10::
Play Video
24
Enviro-Cone Introduction
Enviro-Cone Introduction
::2014/11/05::
Play Video
25
Poly Bags -Plastic Polyethylene Bags -WHITTCO Industrial Supplies
Poly Bags -Plastic Polyethylene Bags -WHITTCO Industrial Supplies
::2014/09/22::
Play Video
26
Polyethylene Bagging Film
Polyethylene Bagging Film
::2013/05/01::
Play Video
27
( LDPE ) MINI TYPE AIR COOLING  PLASTIC WASTE RECYCLE MACHINE (CT-RZ-85A)
( LDPE ) MINI TYPE AIR COOLING PLASTIC WASTE RECYCLE MACHINE (CT-RZ-85A)
::2011/02/11::
Play Video
28
How To Recycle HDPE Plastic (High Density Polyethylene) - a simple method
How To Recycle HDPE Plastic (High Density Polyethylene) - a simple method
::2012/12/07::
Play Video
29
Extrusion of LDPE blown film
Extrusion of LDPE blown film
::2013/01/17::
Play Video
30
HIGH DENSITY POLYETHYLENE by Khushi Enterprises
HIGH DENSITY POLYETHYLENE by Khushi Enterprises
::2013/10/22::
Play Video
31
High Density Polyethylene Mortar tube
High Density Polyethylene Mortar tube
::2013/02/13::
Play Video
32
Gravity separation of common polymers
Gravity separation of common polymers
::2012/10/28::
Play Video
33
ICIS polyethylene overview
ICIS polyethylene overview
::2012/09/19::
Play Video
34
Crystalisation of High Density Polyethylene (HDPE)
Crystalisation of High Density Polyethylene (HDPE)
::2009/05/18::
Play Video
35
Global Polyethylene  Market Size, Analysis, Share, Research, Growth, Trends  2014-2018
Global Polyethylene Market Size, Analysis, Share, Research, Growth, Trends 2014-2018
::2014/09/25::
Play Video
36
EPE(LDPE) Foam Net Extruder Line/Fruit or vegetables packaging Net Production Line
EPE(LDPE) Foam Net Extruder Line/Fruit or vegetables packaging Net Production Line
::2013/05/15::
Play Video
37
Stretch hood pallet wrapper / ClearView Pack - Water Heaters - MSK
Stretch hood pallet wrapper / ClearView Pack - Water Heaters - MSK
::2014/07/01::
Play Video
38
Compliance Wheel Stop
Compliance Wheel Stop
::2014/09/30::
Play Video
39
Polymer Structures
Polymer Structures
::2012/12/06::
Play Video
40
FXR - Brodie Toffan & FAST Floatation Assistance Technology
FXR - Brodie Toffan & FAST Floatation Assistance Technology
::2014/05/12::
Play Video
41
Engineering Jobs Process Production LDPE Mfg Plant Lake Charles LA
Engineering Jobs Process Production LDPE Mfg Plant Lake Charles LA
::2014/11/01::
Play Video
42
Polyethylene Granules,HDPE Granules Manufacturers
Polyethylene Granules,HDPE Granules Manufacturers
::2013/07/30::
Play Video
43
High-Density Polyethylene
High-Density Polyethylene
::2012/03/23::
Play Video
44
DP401 Double Coated Tape from Shurtape
DP401 Double Coated Tape from Shurtape
::2014/07/28::
Play Video
45
LDPE or Glass,which is better?Choose!
LDPE or Glass,which is better?Choose!
::2010/08/21::
Play Video
46
demonstration of high impact poly styrene sheets hips making for vacuum forming & thermoforming
demonstration of high impact poly styrene sheets hips making for vacuum forming & thermoforming
::2013/10/21::
Play Video
47
Bottle of Love
Bottle of Love
::2012/01/03::
Play Video
48
cooling tower fill forming machine
cooling tower fill forming machine
::2013/09/24::
Play Video
49
High Density Polyethylene
High Density Polyethylene
::2012/09/24::
Play Video
50
Bharat Book Presents : India Polyethylene Report 2013   Demand , Supply , Import Export
Bharat Book Presents : India Polyethylene Report 2013 Demand , Supply , Import Export
::2014/03/14::
NEXT >>
RESULTS [51 .. 101]
From Wikipedia, the free encyclopedia
Jump to: navigation, search
LDPE has SPI resin ID code 4

Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene. It was the first grade of polyethylene, produced in 1933 by Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization.[1] Its manufacture employs the same method today. The EPA estimates 5.7% of LDPE (recycling number 4) is recycled.[2] Despite competition from more modern polymers, LDPE continues to be an important plastic grade. In 2009 the worldwide LDPE market reached a volume of US$22.2 billion (15.9 billion).[3]

Properties[edit]

LDPE is defined by a density range of 0.910–0.940 g/cm3. It is not reactive at room temperatures, except by strong oxidizing agents, and some solvents cause swelling. It can withstand temperatures of 80 °C continuously and 95 °C for a short time. Made in translucent or opaque variations, it is quite flexible, and tough but breakable.[citation needed]

LDPE has more branching (on about 2% of the carbon atoms) than HDPE, so its intermolecular forces (instantaneous-dipole induced-dipole attraction) are weaker, its tensile strength is lower, and its resilience is higher. Also, since its molecules are less tightly packed and less crystalline because of the side branches, its density is lower. LDPE contains the chemical elements carbon and hydrogen.

Chemical resistance[edit]

Applications[edit]

A GEECO bowl, c.1950, still used in 2014.

LDPE is widely used for manufacturing various containers, dispensing bottles, wash bottles, tubing, plastic bags for computer components, and various molded laboratory equipment. Its most common use is in plastic bags. Other products made from it include:

See also[edit]

References[edit]

External links[edit]

2010_MSW_Tables_and_Figures_508.pdf. epa.gov

Wikipedia content is licensed under the GFDL License
Powered by YouTube
LEGAL
  • Mashpedia © 2014