Patent ID: 8747620

Claim:
A pulp mould, comprising: a porous sintered body having an outer permeable surface and an inner permeable surface; a sealing stripe arranged within the porous sintered body such that within the porous sintered body a portion that is impermeable to vacuum and a portion that is permeable to vacuum is formed, wherein the sealing stripe is arranged with at least one through hole; and a heating coil arranged within the portion of the porous sintered body that is permeable to vacuum, the heating coil comprising: an inner layer that is configured to be heated by electrical resistance; an intermediate layer surrounding the inner layer, the intermediate layer comprising a lower portion that forms a heat insulator and an upper portion that forms a heat conductor to conduct heat from the inner layer to the porous sintered body; and an outer layer surrounding the intermediate layer and sintered to the porous sintered body to transfer heat to the porous sintered body.