made

How It Is Made - Plastic Bags

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you can use them for groceries

for shopping for taking out the trash

chances are there's a growing pile of

them somewhere in your kitchen

with so many everyday uses it's easy to

see how people can get carried away

with plastic bags

the plastic bags we use every day are

made from granules of linear

polyethylene resin that will be melted

they combine the linear polyethylene

with another low density one in this

mixer

the granules are perfectly blended into

a homogeneous material

granules melt in the extruder which

heats them to a temperature varying

between 356

and 465 degrees this produces a film of

polyethylene

in the form of a tube it is several


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