polystyrene

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polystyrene
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How is expanded polystyrene (EPS) foam made ?
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• Styrene is composed of Benzene (liquid) and
  Ethylene (gas), both of which are petroleum
  products. EPS begins as a styrene monomer which
  goes through a process where the styrene monomers
  link into larger molecules called polystyrene

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• Expanded polystyrene or EPS foam is made from
  polystyrene pellets or beads that are puffed up
  with steam.

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The process is similar to cooking rice with steam.
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• When these independent foam beads are in a mold
  they take the shape of the mold and hold that
  shape when they dry and cool down.

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• The polystyrene beads grow to more than 40 times
  their original size and when the process is
  complete the usable EPS is about 98 air which
  gives it features that are desired.

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• Usually a small amount (approx 4-6) pentane or
  another blowing agent is added to the hard
  polystyrene pellets to enable the expansion
  process

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• A hot knife will only work with polystyrene

An electric slicer is what the prosuse
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• Another thing to remember is that polystyrene
  give off various toxic gases when heated. It's
  not a good idea to breathe polystyrene fumes,
  either Polyethylene is pretty innocuous

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Potential Health Effects Eyes

• Contact of powder or fines with eye may cause eye
  irritation.
• Contact with hot or molten material may cause
  severe thermal injury,
• including in extreme contact possible blindness.

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Potential Health Effects Skin

• This product may cause irritation to the skin
  from repetitive handling.
• Contact with hot or molten material may cause
  severe thermal burns.
• Contact of powder or fines with skin may cause
  mild irritation that is increased by mechanical
  rubbing or if skin is dry

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Potential Health Effects Inhalation

• This product may cause irritation to the
  respiratory system. Overexposure may be harmful

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Acute Toxicity

• Exposure to high levels
• of dusts may be irritating
• to the eyes.Skin
• with molten or heated material may cause burns.
  Vapors/heated fumes may be irritating to the
  respiratory system

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• Pentanes, mixed - Contact can irritate the eyes
  and skin causing a rash and a burning sensation.
  Inhalation can
• irritate the nose, throat, and lungs causing
  coughing, wheezing, and shortness of breath.
  Inhalation of high
• concentrations may result in central nervous
  system (CNS) depression, causing headache,
  dizzines s, nausea,

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• This product can release a gas that is highly
  flammable in the presence of open flames, lit
  cigarettes, sparks, static electricity
  discharges, or heat

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• Polystyrene foam should not be burned in
  uncontrolled conditions. In addition to CO2, and
  CO if there is insufficient O2,