EPS Raw Material

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Description

Expanded Polystyrene, or EPS for short, is a light weight, rigid, plastic foam insulation material produced from solid beads of polystyrene,Expansion is achieved by virtue of small amounts of pentance gas dissolved into the polystyrene base material during production.The gas expands under the action of heat , applied as steam, to form perfectlly closed cells of EPS. These cells occupy approximately 40 times the volumn of the original polystyrene bead. The EPS beads are then moulded into appropriate foams suited to their application. It  is most commonly used for packaging foodstuffs,medical supplies, electrical consumer goods and insulation panels for building.

TYPE Character Mainly Use
 E
Standard   material
With stable bubbling times and long preservation
For packing container, panel ,floating ball
slow-weight material art and crafts
 F
Fire resistant material
With high strength, fast forming, high foaming and oxygen index
For building materials, civil engineering, composite plate, heat preservation
and insulation materials
 P
Extra-light material
 With high times and glossiness
 For fish box, fruit and vegetable box as well as light panel

 

Diameter of each type

 

No.

Diameter 

   of

granularity

   (mm) 

            Times

  E

material

    P

material

  B

material

   F

material

201

 1.4-2.0  80-90 110-115  70-85  70-85
301 1.0-1.6  80-95 100-115  70-85  70-85
302 0.85-1.25   70-85 100-115  65-80 65-80
303  0.7-1.0  65-80 100-115  60-75  60-75

401

 0.5-0.8  55-70  75-90  50-65 50-65

 

 Technical requirement

Name of index specification Commest grades Fire resistant grades

Content of foaming

agent

less than 6.8%

less than 6.8%

Residual

 phenylethylene

 less than 0.6%

less than 0.2%

Water content

 less than 1.0%

less than 1.8%

Sieving rate of

 

 

 

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