Vacuum insulation panel with a lead-through
To provide a cost-effective, stable vacuum insulation panel ( 10 ) having at least one lead-through ( 20 ) in a main surface ( 16 ) of an insulating material supporting body ( 14 ) and having a vacuum-tight film envelope ( 17 ), it is proposed that the lead-through ( 20 ) is formed as a bush ( 30 ) with an outer side ( 32 ) facing the insulating material supporting body ( 14 ) and that on the first bush end ( 36 ) is provided a first, preformed collar ( 37 ) extending radially away from the bush ( 30 ) into the main surface ( 16 ) and, opposite said collar, is provided a second collar ( 39 ) formed by thermal deformation of the second bush end ( 38 ), wherein the vacuum-tight film envelope ( 17 ) is welded to the collars ( 37, 39 ). A corresponding method for producing the panel is also described.
1. Vacuum isolation panel ( 10 ) with at least one lead-through ( 20 ) in a main surface ( 16 ) of an insulating material supporting body ( 14 ) and a vacuum-tight foil envelope ( 17 ), characterised in that the lead-through ( 20 ) is formed as a bush ( 30 ) with an outer side ( 32 ) having a diffusion-tight coating ( 34 ) and facing the insulating material supporting body ( 14 ) and that on the first bush end ( 36 ) a first, preformed collar ( 37 ) is provided, extending radially away from the bush ( 30 ) to the main surface ( 16 ), and, opposite said collar, a second collar ( 39 ) is provided, formed by thermal deformation of the second bush end ( 38 ), wherein the vacuum-tight foil envelope ( 17 ) is welded to the collars ( 37 , 39 ).
2. Vacuum isolation panel according to claim 1 , characterised in that the coating ( 34 ) is formed by a metallic layer, an inorganic layer, or a metallic layer and an inorganic layer.
3. Vacuum isolation panel according to claim 1 , characterised in that the bush ( 30 ) is made of a thermoplastic resin.
4. Vacuum isolation panel according to claim 1 , characterised in that the bush ( 30 ) has a diffusion-tight coating ( 34 ) on its outside ( 32 ) and its inside.
5. Vacuum isolation panel according to claim 4 , characterised in that the coating ( 34 ) is formed by a metallic layer, an inorganic layer, or a metallic layer and an inorganic layer.
6. Vacuum isolation panel according to claim 2 , characterised in that the bush ( 30 ) is made of a thermoplastic resin.