Vacuum Forming Acrylic Sheet Temperature

Processing limit f c f c f c f c f c acrylonitrile butadiene styrene abs 185 85 260 127 280 138 300 310 149 154 360 182 acetate 160 71 260 127 280 138 310 154 360 182 acrylic pmma 185 85 300 149 325 163 350 177 400 204.

Vacuum forming acrylic sheet temperature. Temperatures throughout the oven are uniform. Line bending or thermoforming a brasion resistant acrylic sheet is not recommended. They are drape forming acrylic sheet pressure forming acrylic sheet and vacuum forming the acrylic sheet. To calculate the minimum bend radius of curvature multiply the thickness of the sheet to be used by 330.

There are many acrylic thermoforming techniques. Vivak petg co polyester clear easy forming at low temps. 1 drape forming acrylic sheet. Cold forming is possible.

High density polyethylene hdpe which requires a core temperature of approximately 280 f for optimal forming. Sheet surface temperature will directly correspond to material gage. Mold set lower orienting normal forming upper temperature processing limit temperature core temp. Temperature can be controlled thermostatically within 10 f 5 c between 140 350 f air velocities across the sheet range between 200 1000 feet per minute 1 5 m s.

Forms to a high definition. Acrylic pmma clear frosted and colored extruded acrylic vacuum forms better then the cast. Most widely used material. Hips high impact polystyrene white easy forming.

Before forming the sheet s temperature must be higher than the desired temperature to allow for cooling that will occur prior to the start of forming. The clamping system exerts constant uniform pressure on all sides as the sheet becomes soft. Never heat acrylic sheet in a kitchen oven. For example let s use 0 250 in.

Forming temperature the forming range for acrylic sheet is 290 320ºf 142 160ºc. This is one of the earliest thermoforming processes dating back to early egyptian times. Tighter radii may result in crazing or cracking of the coating. Forms to a high definition.

However we shall look at the most common three.