| 主权项 |
1. A method for producing a tubular fuel cell by means of a pulling-core tool, the pulling-core tool comprising:
at least one tool part, which forms a cavity, and a pulling core, which can be positioned in at least two positions in the cavity,wherein a hollow space, which substantially corresponds to a form of a tubular body to be formed that is closed on one side by a cap portion, can be formed between the pulling core and the at least one tool part, the pulling-core tool having at least one sprue channel, which opens out into a hollow-space region in the form of a cap portion,wherein the method comprises the method steps of:
a) injecting a first injection-molding component for forming a ceramic and/or vitreous material through the sprue channel into the pulling-core tool, the pulling core being positioned in a first position; b) positioning the pulling core in a second position, in which the pulling core is further away from the sprue channel than in the first position; and c) injecting a second injection-molding component, different from the first, for forming a ceramic and/or vitreous material through the sprue channel into the pulling-core tool. |
