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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::
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2
Polyethylene PE Film - How it
Polyethylene PE Film - How it's made
::2012/11/30::
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3
What is LDPE?
What is LDPE?
::2009/10/07::
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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::
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5
Wicketed Bread Bags -  Low Density Polyethylene
Wicketed Bread Bags - Low Density Polyethylene
::2014/07/23::
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6
MYOG low-density polyethylene (LDPE) tarptent - Part 2
MYOG low-density polyethylene (LDPE) tarptent - Part 2
::2010/08/16::
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Low Density Polyethylene Disposable Gloves 500Box/2Carton/20Case
Low Density Polyethylene Disposable Gloves 500Box/2Carton/20Case
::2012/07/29::
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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::
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9
MYOG low-density polyethylene (LDPE) tarptent - Part 1
MYOG low-density polyethylene (LDPE) tarptent - Part 1
::2010/08/16::
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10
Crystalisation of Low Density Polyethylene (LDPE)
Crystalisation of Low Density Polyethylene (LDPE)
::2009/05/18::
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11
Linear Low-Density Polyethylene Structure
Linear Low-Density Polyethylene Structure
::2014/09/22::
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12
Polymer Detectives - Science Olympiad - Video 2 - HDPE, LDPE, PP
Polymer Detectives - Science Olympiad - Video 2 - HDPE, LDPE, PP
::2012/01/09::
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13
hdpe high density polyethylene
hdpe high density polyethylene
::2014/04/04::
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14
Double colors strip Film Blowing machine(HDPE / LDPE film)
Double colors strip Film Blowing machine(HDPE / LDPE film)
::2012/10/29::
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Hdpe Scrap,Hdpe Waste,High Density Polyethylene Scrap
Hdpe Scrap,Hdpe Waste,High Density Polyethylene Scrap
::2013/07/30::
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16
Das Band - Fine Polyethylene Extruder.
Das Band - Fine Polyethylene Extruder.
::2013/01/03::
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17
Polyethylene
Polyethylene
::2010/11/30::
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18
Stretching of LDPE between crossed polarisers
Stretching of LDPE between crossed polarisers
::2009/03/04::
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19
Polyolefin
Polyolefin's (Mainly LDPE / PP) Coating Lamination Plant
::2014/08/21::
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20
ICIS polyethylene overview
ICIS polyethylene overview
::2012/09/19::
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21
Polyethylene Bagging Film
Polyethylene Bagging Film
::2013/05/01::
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22
=D Fracture of Medium Density Polyethylene
=D Fracture of Medium Density Polyethylene
::2013/02/01::
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23
Poly Bags -Plastic Polyethylene Bags -WHITTCO Industrial Supplies
Poly Bags -Plastic Polyethylene Bags -WHITTCO Industrial Supplies
::2014/09/22::
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24
LDPE or Glass,which is better?Choose!
LDPE or Glass,which is better?Choose!
::2010/08/21::
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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::
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26
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::
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27
POLYCO - Thank You (low res)
POLYCO - Thank You (low res)
::2014/06/26::
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28
Gravity separation of common polymers
Gravity separation of common polymers
::2012/10/28::
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29
DP401 Double Coated Tape from Shurtape
DP401 Double Coated Tape from Shurtape
::2014/07/28::
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30
Plastic Packaging Material - Iris Polymars Pune
Plastic Packaging Material - Iris Polymars Pune
::2014/08/12::
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31
Stretch Hood Bagger / Clear View Pack - Water Heaters - MSK
Stretch Hood Bagger / Clear View Pack - Water Heaters - MSK
::2014/07/01::
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32
Moulding  Recycled  High Density  Polyethylene (HDPE 2 )
Moulding Recycled High Density Polyethylene (HDPE 2 )
::2013/11/19::
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HybriD scan data gallery NT-MDT by Sergey Magonov
HybriD scan data gallery NT-MDT by Sergey Magonov
::2014/01/31::
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Traffic Safety Service
Traffic Safety Service's Type 3 Breakaway Barricade Product Information Video
::2014/05/02::
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TARGET FACTORY DLX TRGT W/BTTL
TARGET FACTORY DLX TRGT W/BTTL
::2014/06/30::
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36
SJ B65 Rotary Die Head Film Blowing Machine Set
SJ B65 Rotary Die Head Film Blowing Machine Set
::2014/09/23::
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37
high density polyethylene (HDPE) fittings and fusion machinery
high density polyethylene (HDPE) fittings and fusion machinery
::2014/04/29::
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38
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::
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39
Bottle of Love
Bottle of Love
::2012/01/03::
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40
black hips sheet
black hips sheet
::2013/09/25::
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41
RTI Cryogenics Inc. - XyCom TPE Demo June 2012
RTI Cryogenics Inc. - XyCom TPE Demo June 2012
::2013/03/27::
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42
plug tray
plug tray
::2013/10/21::
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43
agricultural trays
agricultural trays
::2013/10/16::
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44
FXR FAST Floatation Assistance Technology
FXR FAST Floatation Assistance Technology
::2014/05/12::
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45
PTA-M 250X4, Protection Tape Application machine
PTA-M 250X4, Protection Tape Application machine
::2014/09/19::
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46
VERSAPIPE FUSION | Butt and Electro Fusion "SUMMARIZED"
VERSAPIPE FUSION | Butt and Electro Fusion "SUMMARIZED"
::2014/01/02::
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47
cell trays
cell trays
::2013/10/21::
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48
FRANCIS Tristan, Polyethylene VLOG
FRANCIS Tristan, Polyethylene VLOG
::2014/04/26::
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49
SJ D50 Film blowing machine with folder
SJ D50 Film blowing machine with folder
::2014/09/23::
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50
SJ65FM600 Double Head Film Blowing Machine
SJ65FM600 Double Head Film Blowing Machine
::2014/09/23::
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RESULTS [51 .. 101]
From Wikipedia, the free encyclopedia
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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

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