Extrusion process

An extrusion method and extrusion hole technology, applied in the field of extrusion, can solve the problems of restricting the applicability of products, and achieve the effects of good ultraviolet radiation protection, accurate crosslinking degree and crosslinking density, and precise control

Inactive Publication Date: 2007-12-12
梅勒菲尔股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such an interface between the crosslinked surface layer and the article is undesirable and may limit the applicability of the article

Method used

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  • Extrusion process

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Embodiment Construction

[0013] According to one embodiment of the present invention, a modified crosslinking additive or additives is applied to the surface of the thermoplasticized stream of extrudable resinous thermoplastic crosslinked material through an extrusion orifice prior to the actual extrusion step superior. In this case, the modified crosslinking additive is distributed over the resinous crosslinking material to form a surface layer with altered crosslinking properties relative to the rest of the resinous material to be extruded. Thus, the extruded article also includes a surface layer with altered crosslinking properties. This delivery of the modified cross-linking additive is accomplished using an introduction device. After the actual extrusion step, the cross-linking of the surface layer with altered cross-linking properties is initiated by means of an initiating device, and the cross-linking of the surface layer and the cross-linking of the rest of the extruded article continue using...

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Abstract

The present invention relates to preparing extruded article by flowing heat plastified stream of extrudable resinous thermoplastic material through an extrusion orifice. In the invention crosslinking additives are introduced and mixed to the surface portion of the stream of extrudable resinous thermoplastic material before the extrusion step. After the extrusion step the crosslinking of the surface portion of the extruded article provided with the crosslinking additives is initiated by special initiation means.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1, which is a process for the production of extruded articles by passing a heat-plasticized stream of an extrudable resinous thermoplastic crosslinked material through an extrusion orifice and relates to a method according to the preamble of claim 10, which is an extrusion process for the preparation of extruded articles, in which resinous thermoplastic cross-linked material can be extruded A heat-plastified stream is arranged to flow through an extrusion orifice, the method comprising the steps of: providing a source of heat-plastified extrudable synthetic resinous thermoplastic cross-linked material and advancing the material along a first flow path towards the extrusion orifice . The invention also relates to a device according to the preamble of claim 15, which is a device for the production of extruded articles by passing a heat-plasticized flow of an extrudable resinous thermopla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/00B29C47/20B29C47/70B29C35/02C08J3/24B29CB29C35/06B29C35/08B29C35/10B29C48/06B29C48/08B29C48/09B29C48/29B29C48/32B29C48/395
CPCB29K2105/24B29K2105/0005B29C47/38B29C47/0004B29C47/705B29C35/10B29C47/1063B29C47/0016B29C47/0021B29C2035/0827B29C35/0266B29C35/06B29C47/0023B29K2105/243B29C48/29B29C48/022B29C48/06B29C48/08B29C48/09B29C48/395B29C48/705
Inventor H·哈留哈托
Owner 梅勒菲尔股份有限公司
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