Black Gun Foam has been formulated for use primarily for moulding and casting applications requiring a good skin to the finished product. This product is widely used within the film prop industry as it enable safe and durable production of props.
|Polycraft Black PU Gun Foam||Unit|
|Mix Ratio By Weight||3A : 1B|
|Cream Time (100g @ 20°C)||15 - 25 Seconds|
|Rise Time (100g @ 20°C)||2 - 3 Minutes|
(Components @ 20°C & Mould @ 35°C)
|Full Cure (100g @ 20°C)||12 Hours|
|Free Rise @ 25°C||Up To 3x Volume|
|Free Rise Density g/mL||0.15 - 0.25|
Black Gun Foam can free rise up to 3x the original mixing volume, the example listed below was a mix ratio of 3:1 by weight totalling 50g (37.5g Part A + 12.5g Part B) in a working environment of 25°C
In lower temperature conditions the free rise ratio will decrease.
Weight to volume ratio: Example 500g Kit
500g Kit Part A is 375g - This equates roughly to 375ml in volume
500g Kit Part B is 125g - This equates roughly to 125ml in volume
500g kit is roughly 500ml in volume, so to mix a full 500ml at once at the correct working temperature of 25°C the foam will free rise to roughly 1.5 Litres, but if it is not used in the correct working conditions the free rise ratio will decrease.