Which of your sheets are commonly used for vacuum forming?

ABS - Acrylonitrile Butadiene Styrene (black and white)

Hard, rigid material that has good impact strength

Forms to a high definition

 

Acrylic – PMMA (clear, frosted, and colored)

Extruded acrylic vacuum forms better then the cast

Tends to be brittle and temperature sensitive

 

Vivak ® PETG - Co-Polyester (clear)

Easy forming at low temps

Forms to a high definition

 

HIPS - High Impact Polystyrene (white)

Easy forming

Forms to a high definition

Most widely used material

 

PC – Polycarbonate (clear)

Hard and rigid with good impact resistance

 

PP –Polypropylene (natural, black, and white)

HDPE – High Density Polyethylene (natural)

LDPE – Low Density Polyethylene (natural)

Difficult to form

Good temperature control required

  

Amorphous thermoplastics are much easier to vacuum form then semi- crystalline thermoplastic.

Amorphous thermoplastic would include ABS, Acrylic, PETG, HIPS, and PC.

Semi-crystalline thermoplastics that are sometimes vacuum formed are PP, HDPE, and LDPE. Semi-crystalline thermoplastics have a far more critical forming temperature then that of amorphous materials. They go very rapidly from a glass transition state to a melt transition state.

With amorphous materials there is a range in the temperature at which you can form it.

Article Title:
Which of your sheets are commonly used for vacuum forming?
Article Summary:
List of Thermoformable plastics
Article Date:
12/8/2011
Article ID:
936
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