A process for producing a watch part comprises in a first step a provision of a mold for producing a watch part with a precise mold shape at an inner mold surface, wherein the precise mold shape corresponds to the negative contours of the watch part to be produced and the mold being made of a mold material. In a second step the mold is filled by a spraying method, wherein the used material corresponds to a watch part material. Furthermore the mold is separated from the watch part in a third step.

A process for producing a watch part comprises in a first step a provision of a mold for producing a watch part with a precise mold shape at an inner mold surface, wherein the precise mold shape corresponds to the negative contours of the watch part to be produced and the mold being made of a mold material. In a second step the mold is filled by a spraying method, wherein the used material corresponds to a watch part material. Furthermore the mold is separated from the watch part in a third step.

A process for producing a watch part (2) comprises the steps of:

- providing a mold (1) with a precise mold shape (10) at an inner mold surface (11), the precise mold shape (10) corresponding to the negative contours of the watch part (2) to be produced and the mold (1) being made of a mold material (12);

- spraying a part material into the mold (1);

- separating the mold (1) from the watch part (2).

[Object] To form a modeled object with high accuracy.

[Solving Means] A powder transfer mechanism (16) laminates powder layers containing water-soluble powder as a main component one by one at a modeling portion (14). An inkjet line head (17) injects a water-based ink that dissolves the powder in an area of an uppermost layer of the powder layers laminated by the powder transfer mechanism (16), the area corresponding to a cross-sectional shape of a modeled object. Then, a heater (18) heats the powder for each layer of the powder layers. Further, the heater (18) heats the powder after the water-based ink is injected by the inkjet line head (17) or before the water-based ink is injected by the inkjet line head (17). The present invention can be applied to a modeling apparatus, for example.

Die Erfindung beschreibt ein Verfahren zum Abformen mikrostrukturierter dreidimensionaler Freiformflächen, mit den Schritten:

a) Abformen der mikrostrukturierten dreidimensionalen Freiformfläche mit einem Material mit Trennmitteleigenschaft für polymeres Material, um eine Abformung der mikrostrukturierten Oberfläche der Freiformfläche zu erhalten;

b) Bereitstellen eines Kerns, dessen Oberfläche an die Kontur der Freiformfläche angepaßt ist;

c) Beschichten der Abformung mit einer Schicht aus polymeren Material mit einer Dicke, die mindestens der Tiefe der Strukturen der mikrostrukturierten Oberfläche entspricht;

d) Aufsetzen der beschichteten Abformung auf den Kern und Verbinden der Schicht aus polymerem Material mit dem Kern;

e) Abnehmen der Abformung von dem Kern, wobei die Schicht aus polymerem Material auf dem Kern verbleibt;

f) gegebenenfalls Aufbringen einer oder mehrerer Schichten homogener Schichtdicke aus metallischem Material auf die freiliegende Schicht aus polymerem Material;

g) Aufbringen einer Hartstoffschicht, gegebenenfalls bei zwischengeschalteter Schicht oder zwischengeschalteten mehreren weiteren Schichten auf die Schicht aus polymerem Material;

h) Bereitstellen einer Grundform, deren Kontur im wesentlichen der der freiliegenden Fläche der Hartstoffschicht und/oder einer Verstärkung der Hartstoffschicht entspricht;

i) Verbinden der freiliegenden Fläche mit der Grundform bei einer Temperatur, die höher ist als die Zersetzungstemperatur der Schicht aus polymerem Material, dabei Zersetzen der Schicht;

j) Entfernen der zersetzten Schicht; und

k) gegebenenfalls Abtragen der einen oder der mehreren weiteren Schichten;



so daß die Hartstoffschicht mit mikrostrukturierter Oberfläche freiliegt.

Disclosed is a mold wherein one bottom surface member (2) and four lateral surface members (3) are assembled. The sides of each lateral surface member (3) are respectively provided with a projection (5) and a recess (6) for combining the lateral surface members together, and the projection (5) of one lateral surface member (3) is engaged with the recess (6) of the adjacent lateral surface member (3). By using the one bottom surface member (2) and four lateral surface members (3), a mold can be assembled or disassembled without using screw or bolts. Consequently, the assembly or disassembly work of the mold is dramatically simplified, thereby improving work efficiency significantly.

A method and apparatus for the production of composite molded materials in which a portion of the mold tooling is a porous, gas-permeable material that enables the venting of entrapped air, moisture, and reactant or by-product gases without the necessity for a physical disruption of the mold components to accomplish the venting. This enables a reduction in cycle time to produce the molding product which reduces manufacturing costs. Applications in which the use of such mold and molding method are advantageous include, among others, the molding of friction materials, composite parts made with various synthetic thermosetting resins, such as phenolic resins, and structural components which may contain reinforcements, such as solid moldings, pre-fabricated composite structures, and shaped articles such as refractory bricks.