Back to results
US 2009/0184436 A1Published application
Method and apparatus for making a composite, in particular comprising an injection-molded part with a polyurethane coating
AssigneeKraussMaffei Technologies GmbH
InventorMARCO GRUBER
Life of this patent
Estimating the term…
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 an 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.
Claims14
A method of making a composite, comprising the steps 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
Apparatus for making a composite, comprising:
- a clamping unit having a mold which defines at least one cavity for introduction of a carrier component;
- an injection unit for injecting a flooding material into the cavity, when the mold is closed at least in part;
- a vacuum unit to produce a pressure below atmospheric in the cavity, when the mold is closed at least in part and before a compression molding step is executed;
- a sensor for measuring the pressure below atmospheric in the cavity;
- and
- a control unit operatively connected to the sensor and the vacuum unit.
3 more elements
Dependencies are inferred from the claim text.