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A method of manufacturing shaped articles and shaped articles manufactured thereby

A product and thermoforming technology, which is applied in the field of manufacturing shaped products, can solve problems affecting yield and warpage, achieve high joint strength and reduce the risk of warpage

Active Publication Date: 2022-04-12
COVESTRO POLYMERS CHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, each step can significantly affect the final yield
[0006] Warpage is an issue in prior art methods due to differences in shrinkage between glass fiber filled resins and composite sheets
Furthermore, in prior art methods, due to the over-injection and joint strength, the glass-filled resin needs to fill a relatively large area, such as the entire frame around the composite sheet, and sometimes to increase the joint, it may need to be combined with the composite material. Area where sheets overlap

Method used

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  • A method of manufacturing shaped articles and shaped articles manufactured thereby
  • A method of manufacturing shaped articles and shaped articles manufactured thereby
  • A method of manufacturing shaped articles and shaped articles manufactured thereby

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Embodiment Construction

[0023] Step i)

[0024] A composite sheet in the sense of the present invention is a sheet comprising thermoplastic material a and continuous fibers, preferably the composite sheet comprises at least three layers of fiber composite. The composite sheet is preferably a flat composite element for forming a composite part, more preferably a pre-cut flat composite sheet.

[0025] The fibrous composite layers of the composite sheet comprise continuous fibers, preferably unidirectionally aligned within the respective layer and preferably embedded in a polycarbonate-based plastic.

[0026] In the context of the present invention, "unidirectional" is understood to mean that the continuous fibers are arranged substantially unidirectionally, ie the longitudinal directions point in the same direction and thus have the same running direction. In this context, "essentially unidirectional" is understood to mean that a deflection of up to 5% is possible in the direction in which the fibers...

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Abstract

A method of manufacturing a shaped article comprising a long fiber thermoplastic composite sheet (1) and short fiber filled thermoplastic components (2,3), thermoforming them, wherein the thermoplastic component is preferably injected across the surface of the composite sheet .

Description

technical field [0001] The present invention relates to a method for the manufacture of shaped articles, in particular to a method for the manufacture of shaped articles from sheets of continuous fibre-reinforced thermoplastic polymer composite material, in particular a case or part of a case for a laptop or mobile phone Methods. Furthermore, the present invention relates to shaped articles manufactured by the method of the present invention, in particular housings or parts of housings for electronic products manufactured from sheets of continuous fibre-reinforced thermoplastic polymer composite material. Background technique [0002] For housing materials for consumer electronics parts, for example, in laptop computer housing parts, the A-Cover is the outermost housing layer that includes the Liquid Crystal Display (LCD), which can be used to surround and protect LCD. When it is made from a continuous carbon fiber reinforced thermoplastic composite, typically fabrication ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/00B29C45/14B29C51/00B29C51/12B29C70/08B29K509/08B29K105/00B29K105/08B29K105/12B29K101/12B29L31/34
CPCB29L2031/3481B29K2509/08B29K2105/0005B29C45/14786B29C69/00B29C70/081B29C51/002B29C51/12B29K2101/12B29K2105/08B29K2105/12B29C70/40B33Y80/00B33Y10/00B29D99/006B29K2069/00B32B27/08B32B27/365B32B2260/046B29C51/00B29C51/14B29C70/021B29C2795/002
Inventor 李一兰E.齐J.常S.高O.策尔纳T.格里姆
Owner COVESTRO POLYMERS CHINA CO LTD
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