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US 7,981,332 B2Granted
Method and apparatus for making a composite, in particular comprising an injection-molded part with a polyurethane coating
AssigneeKraussMaffei Technologies GmbH
InventorMarco Gruber
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Abstract
In a method for producing a composite, a carrier component is placed into an opened cavity of a mold. The mold is then closed to a predetermined position, thereby creating a cavity of a first expanded size. To improve venting, a vacuum is generated in the expanded cavity before filling the expanded cavity with a flooding material. A compression step is then executed either at the same time as flooding material is introduced or following the introduction of the flooding material.
Claims13
A method of making a composite, comprising the steps in the order of:
- producing a carrier component;
- transferring the carrier component into an open cavity of a mold;
- closing the mold to a predefined position in which the cavity has a first expanded size;
- applying a predefined pressure below atmospheric in the cavity of first expanded size to produce a vacuum;
- measuring the pressure in the cavity of first expanded size;
- introducing flooding material into the cavity of first expanded size;
- and
- executing a compression molding step by reducing the cavity to a second contracted size.
5 more elements
Dependencies are inferred from the claim text.