Abstract: The invention relates to a heating device (1) which is designed to heat a packaging film in a deep drawing process, over the course of which the heated packaging film is molded into the cavity of a deep drawing mold. The surface region of the heating device (1) which is brought into contact with the film section to be molded into the cavity has at least one depression (50), the opening area (40) of which equals 40 to 95% of the opening area (40) of the cavity. The invention also relates to a deep drawing device comprising the aforementioned heating device (1).

Abstract: A method for producing a portion unit with at least one filled receiving chamber surrounded by a film, comprising the steps of a) transporting a first film in the direction of a heating device; b) bringing the first film into contact with a surface of the heating device; c) heating the first film by means of the heating device; d) breaking the contact between the first film and the heating device; e) molding the first heated film into the cavities of a thermoforming mold, thereby forming a receiving container with at least one receiving chamber; f) filling the at least one receiving chamber; g) optionally closing and separating the filled receiving containers, thereby forming the portion unit, wherein the region on the surface of the heating device that is brought into contact with the film has at least one depression and, in step b), the at least one depression is covered by the subregions of the first film that are molded into the cavity of the thermoforming mold in step e).

Abstract: The invention relates to a portion unit comprising at least one filled receiving chamber which is surrounded by a film, obtained by a method comprising the steps of: a) transporting a first film in the direction of a heating device; b) bringing the first film into contact with a surface of the heating device; c) heating the first film using the heating device; d) breaking the contact between the first film and the heating device; e) molding the first heated film into the cavities of a deep-drawing die to form a receiving container comprising at least one receiving chamber; f) filling the at least one receiving chamber; g) optionally sealing and separating the filled receiving containers to form the portion unit, wherein the surface region of the heating device that is brought into contact with the film has at least one depression and the at least one depression is covered in step b) by the subregions of the first film which are molded into the cavity of the deep-drawing die in step e).

Abstract: A continuous method for preparing a liquid washing or cleaning agent which includes at least one surfactant and at least one dye. In this case, the dye solution used in the method according to the invention is free of preservatives. The present invention also relates to washing or cleaning agents which are obtained by way of the method according to the invention.

Abstract: A continuous method for preparing a liquid washing or cleaning agent which includes at least one surfactant and at least one dye. In this case, the dye solution used in the method according to the invention is free of preservatives. The present invention also relates to washing or cleaning agents which are obtained by way of the method according to the invention.