1
What is LDPE?
What is LDPE?
DATE: 2009/10/07::
2
7. production of low density and high density polyethylene (HSC chemistry)
7. production of low density and high density polyethylene (HSC chemistry)
DATE: 2011/12/14::
3
Low-density polyethylene
Low-density polyethylene
DATE: 2014/10/10::
4
Polyethylene PE Film - How it
Polyethylene PE Film - How it's made
DATE: 2012/11/30::
5
110,000 Ton/Year Low Density Polyethylene (LDPE) Plant for Sale
110,000 Ton/Year Low Density Polyethylene (LDPE) Plant for Sale
DATE: 2013/07/03::
6
Bags, Film, Sheet, high and low density polyethylene washing and drying Line
Bags, Film, Sheet, high and low density polyethylene washing and drying Line
DATE: 2012/05/02::
7
Wicketed Bread Bags -  Low Density Polyethylene
Wicketed Bread Bags - Low Density Polyethylene
DATE: 2014/07/23::
8
Wholesale Poly Tubing Roll - 100% Virgin Low Density Polyethylene
Wholesale Poly Tubing Roll - 100% Virgin Low Density Polyethylene
DATE: 2014/12/21::
9
MYOG low-density polyethylene (LDPE) tarptent - Part 1
MYOG low-density polyethylene (LDPE) tarptent - Part 1
DATE: 2010/08/16::
10
Polymer Detectives - Science Olympiad - Video 2 - HDPE, LDPE, PP
Polymer Detectives - Science Olympiad - Video 2 - HDPE, LDPE, PP
DATE: 2012/01/09::
11
Low Density Polyethylene Plastic Bags - HgCdTe MCV
Low Density Polyethylene Plastic Bags - HgCdTe MCV
DATE: 2015/04/30::
12
Crystalisation of Low Density Polyethylene (LDPE)
Crystalisation of Low Density Polyethylene (LDPE)
DATE: 2009/05/18::
13
Low Density Polyethylene (LDPE) Uses
Low Density Polyethylene (LDPE) Uses
DATE: 2014/10/26::
14
MYOG low-density polyethylene (LDPE) tarptent - Part 2
MYOG low-density polyethylene (LDPE) tarptent - Part 2
DATE: 2010/08/16::
15
Speed Solar Sun 49123 Solar Collector Low-Density Polyethylene for 0.7 x 6 m for Pools with
Speed Solar Sun 49123 Solar Collector Low-Density Polyethylene for 0.7 x 6 m for Pools with
DATE: 2015/06/29::
16
Low Density Polyethylene (LDPE) Uses
Low Density Polyethylene (LDPE) Uses
DATE: 2015/01/16::
17
LDPE Ink Pen
LDPE Ink Pen
DATE: 2014/12/21::
18
hdpe high density polyethylene
hdpe high density polyethylene
DATE: 2014/04/04::
19
What is HDPE?
What is HDPE?
DATE: 2009/09/10::
20
DIY PLASTIC MOLDS - how to make a vacuum former EASY
DIY PLASTIC MOLDS - how to make a vacuum former EASY
DATE: 2015/04/16::
21
Das Band - Fine Polyethylene Extruder.
Das Band - Fine Polyethylene Extruder.
DATE: 2013/01/03::
22
HIGH DENSITY POLYETHYLENE by Khushi Enterprises
HIGH DENSITY POLYETHYLENE by Khushi Enterprises
DATE: 2013/10/22::
23
Polyolefin
Polyolefin's (Mainly LDPE / PP) Coating Lamination Plant
DATE: 2014/08/20::
24
Hdpe Scrap,Hdpe Waste,High Density Polyethylene Scrap
Hdpe Scrap,Hdpe Waste,High Density Polyethylene Scrap
DATE: 2013/07/30::
25
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
DATE: 2013/05/15::
26
Moulding  Recycled  High Density  Polyethylene (HDPE 2 )
Moulding Recycled High Density Polyethylene (HDPE 2 )
DATE: 2013/11/19::
27
Double colors strip Film Blowing machine(HDPE / LDPE film)
Double colors strip Film Blowing machine(HDPE / LDPE film)
DATE: 2012/10/29::
28
LDPE and HDPE Mechanical Behavior
LDPE and HDPE Mechanical Behavior
DATE: 2011/06/22::
29
Thick Sheet Vacuum Forming
Thick Sheet Vacuum Forming
DATE: 2013/05/23::
30
BISSO MARINE - High Density Polyethylene Pipelay Animation
BISSO MARINE - High Density Polyethylene Pipelay Animation
DATE: 2010/05/07::
31
high density polyethylene (HDPE) fittings and fusion machinery
high density polyethylene (HDPE) fittings and fusion machinery
DATE: 2014/04/29::
32
Polyethylene
Polyethylene
DATE: 2010/11/30::
33
Vacuum forming & thermoforming abs, hdpe, ldpe, pp, polycarbonate, hips, pvc, thick sheet
Vacuum forming & thermoforming abs, hdpe, ldpe, pp, polycarbonate, hips, pvc, thick sheet
DATE: 2011/09/29::
34
=D Fracture of Medium Density Polyethylene
=D Fracture of Medium Density Polyethylene
DATE: 2013/02/01::
35
Poly Bags -Plastic Polyethylene Bags -WHITTCO Industrial Supplies
Poly Bags -Plastic Polyethylene Bags -WHITTCO Industrial Supplies
DATE: 2014/09/22::
36
Polyethylene Bagging Film
Polyethylene Bagging Film
DATE: 2013/05/01::
37
Product Spotlight: Color-Coded Polyethylene Flexible Tubing
Product Spotlight: Color-Coded Polyethylene Flexible Tubing
DATE: 2015/05/12::
38
Stretching of LDPE between crossed polarisers
Stretching of LDPE between crossed polarisers
DATE: 2009/03/04::
39
LDPE soft pipe extrusion line
LDPE soft pipe extrusion line
DATE: 2012/07/26::
40
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
DATE: 2014/10/08::
41
LDPE/HDPE Film Blowing Machine
LDPE/HDPE Film Blowing Machine
DATE: 2008/05/25::
42
Engineering Jobs Process Production LDPE Mfg Plant Lake Charles LA
Engineering Jobs Process Production LDPE Mfg Plant Lake Charles LA
DATE: 2014/11/01::
43
Pioner  Boats polyethynene   rotational mouldng
Pioner Boats polyethynene rotational mouldng
DATE: 2009/09/13::
44
Ldpe Granules, Ldpe Granules Products, Ldpe Granules Suppliers
Ldpe Granules, Ldpe Granules Products, Ldpe Granules Suppliers
DATE: 2013/07/30::
45
LDPE and HDPE
LDPE and HDPE
DATE: 2014/10/16::
46
Enviro-Cone Introduction
Enviro-Cone Introduction
DATE: 2014/11/05::
47
LDPE Film Recycling Machine in Saudi Arabia.wmv
LDPE Film Recycling Machine in Saudi Arabia.wmv
DATE: 2010/05/31::
48
Enviro-Cone Heat Test
Enviro-Cone Heat Test
DATE: 2014/11/05::
49
Gravity separation of common polymers
Gravity separation of common polymers
DATE: 2012/10/28::
50
ICIS polyethylene overview
ICIS polyethylene overview
DATE: 2012/09/19::
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 2013 the worldwide LDPE market reached a volume of about US$33 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
MASHPEDIA
LEGAL
  • Mashpedia © 2015