Bayer Materialscience, LLC

Bayer Materialscience Ag

Lanxess Corporation

Bayer Polymers LLC

Olaf Zoellner

Norman J Brozenick

Florian Dorin

Christoph Klinkenberg

A computer-implemented method for optimising an injection moulding process for producing thick-walled components based on a model parameterised on the basis of parameters to be predetermined is provided, wherein a component to be produced is represented in the model with a component geometry, and the method comprises at least the following steps: e) defining a group of parameters as primary characteristics on the basis of a relative influence of the parameters on a predetermined model response, and f) defining parameter values for the primary characteristics as starting values for a subsequent optimisation of the model and of respective tolerance ranges for the primary characteristics, c) optimising the parameter values of the individual primary characteristics with respect to a desired value of the model response in the respective tolerance ranges, proceeding from the starting values from step a), and d) setting the optimised parameter values from step c) as the corresponding starting parameter values on an injection-moulding machine.

Computer-implemented method for optimizing an injection-molding process for producing thick-walled components

The present invention is directed to a method of preparing an article of manufacture. The method includes bringing at least a portion of a heated thermoplastic sheet into contact with at least a portion of the first surface of a support having a plurality of perforations. A vacuum is formed on the second surface of the support, and portions the heated thermoplastic sheet are drawn through the perforations of the support and to the second surface side of the support. Thermoplastic attachment heads are formed on the second surface side of the support, from the thermoplastic material of the sheet that is drawn through the perforations. The thermoplastic sheet and the support are fixedly attached one to the other by means of the edges of the perforations being embedded in the thermoplastic material of the sheet drawn therethrough, and the thermoplastic attachment heads. Also disclosed are articles of manufacture, such as interior and exterior automotive body panels and components.

Method of preparing an article

A tubular assembly that includes a plug () residing within at least a portion of each of a first tube () and a second tube (), is described. Each of the first and second tubes have perforations (and) that are separately aligned with cavities () in the exterior surface () of the plug (). Plastic material () is molded separately through the perforations (and) of the first and second tubes (and) and at least partially fills the cavities () of the plug (). The edges () of the perforations () of the first tube (), and the edges () of the perforations () of the second tube () are embedded in the plastic material () extending therethrough, thereby fixedly attaching the first and second tubes to the plug therein.

Tubular assembly having an internal plug

A tubular assembly which includes a first (or outer) tube ( ), a second (or inner) tube ( ) and a plug ( ) within the second tube ( ) is described. The plug ( ) resides within at least a portion of the second tube ( ), which itself resides within a portion of the first tube ( ). The first ( ) and second ( ) tubes each have perforations ( ), at least some of which are aligned. The plug ( ) has cavities ( ) in its exterior surface ( ), at least some of which are aligned with the aligned perforations ( ). Plastic material (e.g., thermoplastic material) is molded through aligned perforations ( ) and at least partially fills aligned cavities ( ). The edges ( ) of aligned perforations ( ) are embedded in the plastic material ( ) molded therethrough. The plastic material ( ) extending through aligned perforations ( ), into cavities ( ) and embedding perforation edges ( ) therein, serves to fixedly attach the first tube ( ), second tube ( ) and plug ( ) together.

Growing community of inventors

Leverkusen, Germany

Olaf Zoellner