Abstract: A method of producing a biodegradable cartridge having a predominantly elongated cylindrical shape having a cavity, including steps of providing a first element of a sheet form into a cylindrical form; providing a second element to the cavity of a first end of the cartridge, thereby closing the first end of the cartridge; providing another second element to the cavity of a second end of the cartridge, thereby closing the second end of the cartridge; providing a third element to the second end of the cartridge such that the periphery of the second end is larger than the periphery of the first end of the cartridge; wherein the first element, the second element and the third element are made of biodegradable materials, wherein the elements are configured for an air flow to flow from the first end to the second end of the elongated cylindrical shape cartridge, and/or vice versa.

Abstract: Process for the production of a hydrophobic thermal-insulation moulding, where a hydrophilic thermal-insulation moulding is brought into contact with a hydrophobizing agent in vapour form with formation of a thermal-insulation moulding coated with hydrophobizing agent, and this is then subjected to a press process and during the press process and/or after the press process is reacted with the hydrophobizing agent with formation of the hydrophobic thermal-insulation moulding, where a) the density of the hydrophobic thermal-insulation moulding after the press process and after the reaction with the hydrophobizing agent is from 100 to 250 kg/m3, and b) the density of the hydrophilic thermal-insulation moulding on contact with the hydrophobizing agent is from 50% to less than 100% of the density of the hydrophobic thermal-insulation moulding.

Abstract: Process for the production of a hydrophobic thermal-insulation moulding, where a hydrophilic thermal-insulation moulding is brought into contact with a hydrophobizing agent in vapour form with formation of a thermal-insulation moulding coated with hydrophobizing agent, and this is then subjected to a press process and during the press process and/or after the press process is reacted with the hydrophobizing agent with formation of the hydrophobic thermal-insulation moulding, where a) the density of the hydrophobic thermal-insulation moulding after the press process and after the reaction with the hydrophobizing agent is from 100 to 250 kg/m3, and b) the density of the hydrophilic thermal-insulation moulding on contact with the hydrophobizing agent is from 50% to less than 100% of the density of the hydrophobic thermal-insulation moulding.