Abstract: A shim for a compression mold for manufacturing a component from reinforced plastic, typically from SMC, comprising a fixed molding element, a mobile molding element, and a mobile shim that can be moved by an actuator. The mobile shim comprises a conventional part made of steel but also a part made of a high expansion material with a mean coefficient of expansion that is high enough that its own expansion at the molding temperature places the shim in compression against the molding element and seals against this element, thus eliminating flash on the molded part. This material is advantageously a polyetheretherketone, or PEEK. A mold comprising this shim and a compression molding method are also disclosed.

Abstract: A mold for producing a floor made from a polymer material for a motor vehicle, comprising at least one metal insert in the form of sheet metal that is partially overmolded, i.e. having a portion intended to be covered with polymer material and a portion intended to not be covered in this way, the mold comprising a die and a punch defining a cavity, the cavity comprising a location intended to receive the portion of a metal insert intended to be covered with polymer material, wherein the mold, in this location of the cavity, comprises gadroons on the die and on the punch, the gadroons having a thickness that is greater than a predefined minimum thickness (H). The invention also concerns a floor obtained by this method.

Abstract: The invention relates to a mold for manufacturing a plastic part, including a first element and a second element forming, in the closed position of the mold, a cavity corresponding to the part to be manufactured, in which the second element includes at least one system for making molding openings in said part, said system including at least one member forming a cavity of an opening for the finished part, said member being movable relative to the second element in the closing direction of the mold, between a retracted position and an position extending into the cavity. The system includes at least one positioning means for positioning the member in the extended position relative to the first element, said system being sized such that, in the extended position of the member, the distance between a surface of the member bearing on the plastic material and the first element enables the formation of a thin layer of plastic material having a repeatable thickness.

Abstract: A mold for producing a floor made from a polymer material for a motor vehicle, comprising at least one metal insert in the form of sheet metal that is partially overmolded, i.e. having a portion intended to be covered with polymer material and a portion intended to not be covered in this way, the mold comprising a die and a punch defining a cavity, the cavity comprising a location intended to receive the portion of a metal insert intended to be covered with polymer material, wherein the mold, in this location of the cavity, comprises gadroons on the die and on the punch, the gadroons having a thickness that is greater than a predefined minimum thickness (H). The invention also concerns a floor obtained by this method.

Abstract: A mold for forming a motor vehicle part from a polymer material comprising at least one partially overmolded metal insert having a portion intended to be covered with polymer material and a portion intended to be left uncovered. The insert comprises an overmolding limit and the mold comprises a die and a punch capable of taking different positions between: an open position for introduction of inserts and polymer material in the mold, and a molding position wherein the mold cavity is closed, the mold comprising holding means and blocking area at least one movable part and at least one projection extending over a sealing area completely including the insert overmolding limit, to prevent the polymer material from crossing the sealing area seeping between the part of the insert intended to not be covered and one of the opposite faces of the holding means and of the blocking area.

Abstract: A shim for a compression mold for manufacturing a component from reinforced plastic, typically from SMC, comprising a fixed molding element, a mobile molding element, and a mobile shim that can be moved by an actuator. The mobile shim comprises a conventional part made of steel but also a part made of a high expansion material with a mean coefficient of expansion that is high enough that its own expansion at the molding temperature places the shim in compression against the molding element and seals against this element, thus eliminating flash on the molded part. This material is advantageously a polyetheretherketone, or PEEK. A mold comprising this shim and a compression molding method are also disclosed.