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Method and device for producing a composite component, in particular comprising an injection-moulded part with a polyurethane coating

A composite component, injection molding technology, applied in the field of composite components and devices for manufacturing particularly including an injection molded part with a polyurethane coating, to achieve the effects of small mold internal pressure, less material consumption, and small mold wear

Active Publication Date: 2009-08-05
KRAUSSMAFFEI TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such pressing techniques are not used in the processing of polyurethane materials as they are usually unnecessary during processing due to the lower viscosity

Method used

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  • Method and device for producing a composite component, in particular comprising an injection-moulded part with a polyurethane coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 The method of the invention can be fully explained in its schematic form, even if the essential components of the closing unit, such as the tension transmission elements (transoms), the mechanism for building the closing force, the frame, the rotary drive, etc., are not shown. The above-mentioned devices or device components in a closing unit, like the respective device components in a plasticizing and injection device such as in a polyurethane device, are well known and need not be explained in detail again.

[0023] The device for carrying out the method according to the invention comprises a closing unit 10 having a fixed clamping plate 12 and a movable clamping plate 14, between which is arranged an equally axially movable and movable about a vertical axis. Rotating intermediate plate 16 . The molds 20 and 18 or their mold halves are arranged in a known manner both on the clamping surfaces of the stationary clamping plate 12 and the intermediate plate 16 ,...

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PUM

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Abstract

The invention relates to a device and a method for producing a composite component, in particular comprising an injection-moulded part and a polyurethane element, with the steps of: producing a support component, transferring the support component into an opened cavity of a mould and closing the mould to a predetermined position, thereby creating an enlarged cavity of a first size. To improve venting, it is proposed to produce a vacuum in the enlarged cavity of the first size before filling the enlarged cavity of the first size with a flooding material and before carrying out an embossing step at the same time as the filling and / or following the filling with the flooding material.

Description

technical field [0001] In the production of composite components, it is known that a first produced component is provided with a further coating, in particular a plastic layer. Background technique [0002] For this purpose, in some so-called skin-forming processes (skin-forming=registered trademark of the applicant), an injection-molded part is produced in a first step (cycle 1) by injection-molding or injection-pressing. Then, in a further process step (cycle 2), the part is flooded with a polyurethane material having a lower viscosity than the thermoplastic material. The flooding step is carried out in an enlarged cavity into which the components produced in cycle 1 are loaded, wherein the flooding material is injected between the component loaded into the cavity and the cavity wall itself within the gap. [0003] Furthermore, multi-component injection molding methods are known, in which different injection molding materials are injected into different mold cavities in ...

Claims

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Application Information

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IPC IPC(8): B29C45/16B29C45/34B29C45/56
CPCB29K2105/0002B29K2075/00B29C45/34B29C45/561B29C2043/3684B29C67/246B29C2043/148B29C2043/3444B29C33/10B29C2043/3692B29C43/146B29C45/1676
Inventor M·格鲁贝尔
Owner KRAUSSMAFFEI TECH GMBH