초록 ▼

A thermal insulation layer, suitable for use in a duvet, comprises a convection inhibiting structure and at least one surface with a low thermal emissivity. The structure may be a flexible cellular foam sheet or a web of fibrous material, while the low emissivity surface may be a coating on the shee

A thermal insulation layer, suitable for use in a duvet, comprises a convection inhibiting structure and at least one surface with a low thermal emissivity. The structure may be a flexible cellular foam sheet or a web of fibrous material, while the low emissivity surface may be a coating on the sheet or on a thin flexible thermally insulating film. Perforations are provided through the foam sheet or the film to permit diffusion of water vapour through the layer, and the layer may include an additional web of fibrous material or feathers adjacent to the low emissivity surface.

대표청구항 ▼

A flexible thermal insulation layer comprising a substantially continuous sheet of permeable, conduction and convection inhibiting material, and including substantially continuous low thermal emissivity surfaces facing outwardly toward each side of the insulation layer, each outwardly-facing low the

A flexible thermal insulation layer comprising a substantially continuous sheet of permeable, conduction and convection inhibiting material, and including substantially continuous low thermal emissivity surfaces facing outwardly toward each side of the insulation layer, each outwardly-facing low thermal emissivity surface being vapour permeable and being covered by a layer of high voidage material. A thermal insulation layer as claimed in claim 1 wherein the convection and conduction inhibiting structure comprises a cellular foam sheet, through which are defined a plurality of perforations.