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Method for making pvc long fiber thermoplastic body

A long-fiber, thermoplastic body technology, applied in building structures, building components, coatings, etc., can solve problems such as poor fiber reinforcement effect

Active Publication Date: 2017-10-20
REHAU IND SE & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fact that here also dry glass fibers are used as a basis, there is also only limited adhesion between the fibers and the matrix in the final product, thus making the fiber reinforcement less effective

Method used

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  • Method for making pvc long fiber thermoplastic body
  • Method for making pvc long fiber thermoplastic body
  • Method for making pvc long fiber thermoplastic body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Figure 1a A method for making a PVC long fiber thermoplastic is shown. It can be seen that firstly a hybrid yarn 3 is produced which contains reinforcing fibers 1 and fibers composed of plastic material 2 , wherein the fibers 1 , 2 are each formed in a continuous manner (endlos). Plastic material 2 is chosen such that it has a high binding affinity to PVC In the exemplary embodiment, the plastic material 2 consists of polyester, for example PBT and / or PET. The mixed yarn 3 , which combines the reinforcing fibers 1 and the plastic material 2 , is firstly preheated in a preheating device, which causes the plastic material 2 in the mixed yarn 3 to melt. This melting results in the reinforcement fibers 1 being completely covered by the plastic material 2 , so that the correspondingly treated hybrid yarn 3 has a closed outer surface made of the plastic material 2 . This can be based on Figure 1c A cross-sectional view of a long fiber thermoplastic seen in PVC. The th...

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Abstract

The invention relates to a method for producing a long-fiber PVC body, for which first at least one mixed yarn (3) is produced which contains both reinforcing fibers (1) and plastic material (2), wherein the plastic is selected in this way The material (2), i.e. the plastic material has a high binding affinity for PVC and the hybrid yarn (3) is preferably extrusion-coated with PVC and here due to the high binding affinity of the plastic material (2) and closely connected with the PVC cladding (6).

Description

technical field [0001] The present invention relates to a method for the manufacture of PVC long-fiber thermoplastics. Background technique [0002] In order to reinforce plastic profiles, in particular of polyvinyl chloride (PVC), it is known from the prior art to incorporate reinforcing fibers, for example in the form of glass fibers, into the PVC matrix. This can be done, for example, by means of an extrusion process, in which the dry reinforcing fibers in continuous form are coated (clad) with PVC and form granules (long glass fibers—PVC). The disadvantages of this method are the poor adhesion between the fibers and the PVC matrix and the technical difficulties of PVC impregnating dry fibers (eg fiber spreading, melt dispersion). [0003] It is also known with regard to the extrusion of PVC profiles that dry short glass fibers are added to the PVC powder or PVC granules used in order to achieve reinforcement. The method is characterized in that short glass fibers are r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B15/10B29C70/50E06B3/22
CPCB29C70/50E06B3/221B29B15/12
Inventor K·费希尔A·阿尔-舍亚布S·豪勒英R·桑德
Owner REHAU IND SE & CO KG