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Device and method for processing thermosetting plastics

A thermosetting and equipment technology, used in the field of processing thermosetting plastics, can solve problems such as equipment not working, and achieve the effect of high output

Inactive Publication Date: 2009-07-15
KRAUSSMAFFEI TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is so because there may be concerns about cross-linking (hardening) of the reaction mixture in the extrusion device when the extrusion device is stopped, which may lead to inoperability of the entire device

Method used

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  • Device and method for processing thermosetting plastics
  • Device and method for processing thermosetting plastics
  • Device and method for processing thermosetting plastics

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0029] exist figure 1 A first embodiment of the invention is shown in a very simplified schematic form, which comprises an extrusion device 10 as the central element. The extrusion device (extruder for short) 10 is now designed as a co-rotating twin-screw extruder comprising two extrusion screws (not shown) and an extrusion cylinder surrounding the two extrusion screws. The extrusion device 10 comprises a plurality of filling openings 12 , 14 and 16 , through which material can be fed into different process areas, as will also be described below.

[0030] The two extrusion screws are driven in rotation by a drive 11 , wherein the drive comprises a rotary drive, for example in the form of an electric motor, and a transmission.

[0031]On the end of the downstream side of the extruder, the material processed in the extrusion device 10 is conveyed through an outlet 18 to an injection pipe 20, which connects the extruder 10 to an injection mold 22, which This is likewise shown o...

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PUM

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Abstract

The present invention relates to a method for processing thermosetting plastics, particularly thermosetting polyurethane, as well as a device for performing such a method. The device comprises an extruder device (10) having a cylinder, in which an extruder screw is received in a rotating manner, wherein the cylinder has at least one inlet opening (12, 14, 16) and one outlet opening (18), and that at least one inlet opening (12) of the cylinder is provided for filling the plastic material into the cylinder, as well as a tool (22), into which, or by means of which the material discharged by the extruder device can be guided in or through. According to the invention the device is characterized in that at least one inlet opening (12, 14, 16) is configured for the feeding of at least one cross-linked or reactive component of a thermosetting plastic.

Description

technical field [0001] The invention relates to a device and a method for processing thermosetting plastics according to the preambles of claims 1 and 16 . Background technique [0002] Thermosets are generally understood to be thermally irreversible (covalently) crosslinked macromolecules with an amorphous structure and a high crosslink density. - Thermoelastic softening varies according to the magnitude of intermolecular forces and crosslink density. At very tight crosslinks it is moot. Thermosetting plastics in particular transition from a rigid state to a thermally decomposed range with increasing temperature, without softening so much that they could become deformed. Thermosetting plastics are in principle insoluble but, depending on crosslinking, more or less swellable in suitable media. A subset of thermosets is the thermoset polyurethane. [0003] For the purposes of the present invention, thermosetting plastics are also understood to be crosslinked and reacting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/24B29C45/18B29C47/10B29C44/34B29C48/05B29C48/08B29C48/09B29C48/29B29C48/37B29C48/40
CPCB29C45/54B29K2075/00B29C47/82B29K2301/10B29C45/1816B29K2105/0005B29K2105/24B29C47/0021B29C47/368B29C47/364B29C67/246B29C47/367B29C47/0004B29C44/3442B29C47/0023B29C47/1081B29C47/0014B29C47/1063B29C48/83B29C48/05B29C48/297B29C48/29B29C48/022B29C48/08B29C48/09B29C48/37B29C48/387B29C48/388B29C48/832B29C48/40
Inventor R·齐梅特J·伦克尔E·贝尔希滕布赖特
Owner KRAUSSMAFFEI TECH GMBH
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