This video shows the process of making and using a reusable silicone vacuum bag using the Silicone Composites spray system. For more information about the process, equipment or materials please contact us at www.siliconecomposites.com
I am wondered how vacuum outlet is connected because that part is missed in the video. Resin inlet is well described but how which way vacuum is pumped out ?
That's a good question! Normally there would be a vacuum connection through the silicone bag right over the peripheral vacuum channel. In this instance there is a connection through the lower half of the mould (in line with the vacuum channel) You can just see it in the first part of the video when the lower mould is empty.
Hi- You can use flow mesh in exactly the same way as you would use it in a conventional infusion. In this instance it wasn't necessary as the mould is rather small and the laminate is reasonably permeable.
Hi, This mould was made just as a technical demonstration but the process is used in a variety of different applications to produce composite mouldings (i.e. marine, automotive, architectural etc) Have a look at our website www.siliconecomposites.com
Hi Paul, We filled these small detailed ares with solid silicone so that they are more likely to stay in shape and to press the fibre into the correct position under vacuum.
Hi Ted, the life expectancy of a silicone bag will depend on the resin being used but we have customers reporting between 250 to 300 cycles with a polyester resin. The general care and handling is also obviously very relevant.