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Method and device for the production of plates of thermoplastically extruded synthetic materials

A thermoplastic, sheet technology, used in optics, instruments, light guides, etc., can solve the problems of expensive preparation, cost-consuming, and inability to guarantee

Inactive Publication Date: 2007-08-22
布莱尔机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a preparation process is very expensive, cost-intensive and does not guarantee the corresponding, required surface quality

Method used

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  • Method and device for the production of plates of thermoplastically extruded synthetic materials
  • Method and device for the production of plates of thermoplastically extruded synthetic materials
  • Method and device for the production of plates of thermoplastically extruded synthetic materials

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Embodiment Construction

[0057] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation of the method for preparing a sheet from thermoplastic extruded plastics according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments, Structure, characteristic and effect thereof are as follows in detail.

[0058] Referring to FIG. 1, the device R for thermoplastically extruding plastics 3, especially sheets 6, has a calender 1 which is again only schematically drawn and which is designed in the preferred present embodiment as In the form of a three-roll calender with rolls W1, W2 and W3. Inserted between the rolls W1 and W2 is a thermoplastic 3 extruded through an extrusion nozzle 2 . The plastic material 3 flows continuously around the roller W2 and around the other roller W3 onto a raceway 4 with rollers 5 , which is only indicated here...

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PUM

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Abstract

The invention relates to a method and a device for manufacturing sheets which are made of plastic by means of thermoplastic extrusion and are in particular applicable for TFT-display screens. By using the method, sheets can be extruded into tapered shape. The device is provided with an extrusion nozzle and a calendering part connected to the extrusion nozzle. At least one roll of the calendering part is designed in a shape so that tapered sheets can be formed by means of extrusion. The invention aims to manufacture various sheets with high surface quality and degree of homogeneity simply at low cost by using the device, thus the method and the device provided by the invention are more applicable.

Description

technical field [0001] The invention relates to a method in the field of production of thermoplastic extruded plastics, in particular to a method from sheets for TFT-screens, and a device for carrying out the method. Background technique [0002] During the thermoplastic extrusion of plastics, until now only sheets of uniform and equal thickness could be produced. This sheet has a small thickness and is obtained by extrusion. In this process, the plastic is extruded and conducted via an extrusion nozzle into a calender (Glöttwerk), where the sheet control is then adjusted to the corresponding thickness, homogenized, cooled and conveyed onto the raceway (Rollbahn) and then cut accordingly to the desired length. [0003] Plastic sheets are also used as lighting carriers in the production of TFT-monitors and in notebooks are designed in a tapered and tapering shape. They are produced by pouring liquid plastic into correspondingly designed moulds. Such a production process i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/32B29C47/88B29C47/86B29C48/07B29C48/305B29C48/35B29C48/355
CPCB29C47/0019G02B6/0065G02B6/0046B29C47/86B29C47/0038B29C47/32B29C47/8845B29C48/865B29C48/07B29C48/12B29C48/001B29C48/35B29C48/86B29C48/87B29C48/914
Inventor 沃尔特·布莱尔
Owner 布莱尔机械制造有限公司
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