Gebr. Happich Gmbh

Schade Kg

Webasto-schade Gmbh

Harald Strunk

Rolf Schlenz

Kurt Gohr

Andreas Gustavel

Ralf Horstkotter

Hans Jardin

An apparatus for manufacturing a plastic molded part. A plasticized plastic composition is fed to the open mold cavity defined between a lower and an upper mold half. At least one web and perhaps two webs of decorative material to be applied to the molded part extend across the mold cavity. The closing of the mold halves presses the plastic composition against the web or webs. There is at least one two-part clamping frame for resiliently holding the web of decorative material by clamping it outside the mold cavity, so that the web can slip with respect to the composition as the mold halves move together. One clamping frame half is developed with an immersion edge which defines a side edge of the mold cavity and with a cutting plane spaced from the immersion edge a distance sufficient that the frame half also serves as an ejector for the molded part from the mold cavity as the mold halves open apart. Plastic composition is either directly delivered to the mold cavity or it is first delivered to a preforming chamber which is placed in the mold cavity and then the chamber is opened to deliver the preshaped part to the mold cavity. The preforming chamber has a non-adherent interior surface and/or is air permeable and a gas is supplied for the purpose of minimizing or eliminating adherence of the plastic composition to the internal surface of the preforming chamber.

Apparatus for the manufacture of a plastic molded part

A process for the production of a cover unit with a seal for vehicle roofs in which a cover part, such as a glass cover part, a cover support and a profile part, having a replacement seal receptacle are inserted in a mold having an upper part and a lower part. The profile part is spaced from the cover part and the support leaving edge gaps which are filled by introducing an elastomer therein to connect this assembly to a cover unit. The profile part is attached and aligned, in a preferred embodiment, by attaching projections on the upper part and/or lower part of the mold depending on its position in the production of the cover unit. A peripheral seal can be molded on the profile part. This peripheral seal can be removed from the profile part, so that the seal receptacle of the profile part can be used to insert a replacement seal. Also, a resulting cover unit for vehicle roofs comprises a cover part, a cover support and a profile part with a replacement seal receptacle and an, optionally, molded-on peripheral seal. The cover part and cover support are connected to the profile part by an elastomer to form a cover unit.

Process for the production of a cover unit with a seal for vehicle roofs

A method and an apparatus for manufacturing a plastic molded part. A plasticized plastic composition is fed to the open mold cavity defined between a lower and an upper mold half. At least one web and perhaps two webs of decorative material to be applied to the molded part extend across the mold cavity. The closing of the mold halves presses the plastic composition against the web or webs. There is at least one two-part clamping frame for resiliently holding the web of decorative material by clamping it outside the mold cavity, so that the web can slip with respect to the composition as the mold halves move together. One clamping frame half is developed with an immersion edge which defines a side edge of the mold cavity and with a cutting plane spaced from the immersion edge a distance sufficient that the frame half also serves as an ejector for the molded part from the mold cavity as the mold halves open apart. Plastic composition is either directly delivered to the mold cavity or it is first delivered to a preforming chamber which is placed in the mold cavity and then the chamber is opened to deliver the preshaped part to the mold cavity. The preforming chamber has a non-adherent interior surface and/or is air permeable and a gas is supplied for the purpose of minimizing or eliminating adherence of the plastic composition to the internal surface of the preforming chamber.

Method for the manufacture of a plastic molded part

A hollow injected shaped body of synthetic plastic is produced by injecting a predetermined quantity of a synthetic plastic melt into a multi-part mold, and forming the melt to the shaped body by a gas under pressure. After bringing the synthetic plastic melt into the mold cavity, the gas is injected into the synthetic plastic melt, then after overcoming the shaped body wall it flows into an overflow chamber from it into a gas circulation system so that during the forming of the melt a hollow formed in the shaped body is continuously supplied with the gas until rigidification of the shaped body.

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Plettenberg, Germany

Harald Strunk