초록 ▼

A thermal insulating unit includes a sealed inner gas-permeable bag containing an insulating micropowdered material, such inner bag having two major surfaces parallel to each other. Two multilayer sheets are respectively disposed on opposite sides of the gas-permeable bag and overlap the same, each

A thermal insulating unit includes a sealed inner gas-permeable bag containing an insulating micropowdered material, such inner bag having two major surfaces parallel to each other. Two multilayer sheets are respectively disposed on opposite sides of the gas-permeable bag and overlap the same, each sheet being formed of an innermost layer and an outermost layer of a thermoweldable plastic and an intermediate metal layer. The metal layer has smaller dimensions than the plastic layers such that each metal layer wholly covers only its corresponding inner-bag major surface. The four plastic layers are peripherally heat-sealed, the resulting outer bag having been evacuated. A device is provided on each metal layer for fixing such layer to and positioning it with respect to its respective two plastic layers.

대표청구항 ▼

A thermal insulating unit which comprises a sealed inner gas-permeable bag containing an insulating micropowdered material, said inner bag having two major surfaces parallel to each other; two multilayer sheets respectively disposed on opposite sides of said gas-permeable bag and overlapping the sam

A thermal insulating unit which comprises a sealed inner gas-permeable bag containing an insulating micropowdered material, said inner bag having two major surfaces parallel to each other; two multilayer sheets respectively disposed on opposite sides of said gas-permeable bag and overlapping the same, each sheet being formed of an innermost layer and an outermost layer of a thermoweldable plastic and an intermediate metal layer; the metal layer having smaller dimensions than the plastic layers such that each metal layer wholly covers only its corresponding inner-bag major surface; the four plastic layers being peripherally heat-sealed, the resulting outer bag having been evacuated; and means on each metal layer for fixing such layer to and positioning it with respect to its respective two plastic layers.