Composition
VIPs consist of:
- Membrane walls, used to prevent air from entering the panel.
- A panel of a rigid, highly-porous material, such as fumed silica, aerogel, perlite or glass fiber, to support the membrane walls against atmospheric pressure once the air is evacuated.
- Chemicals (known as getters) to collect gases leaked through the membrane or offgassed from the membrane materials. These are added to VIPs with glass-fiber or foam cores, because cores with bigger pore size require a higher vacuum (less than about 1 mbar) during the planned service life.
Treatment
VIPs should be removed prior to shredding of appliances.
Labelling
In the case that the appliances are containing VIP the appliances
are labelled.
Legend:
Presence
VP = vacuum (insulation) panel is present
Material
P = Powder (silica)
F = Fibre (Glass fibre)
Place
D = Door
C = Corpus / Cabinet
DC = DC = Door and Corpus / Cabinet