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Method for producing natural fiber reinforced plastic parts

A technology of natural fibers and plastic parts, applied in the direction of coating, etc., can solve the problems of high price and high labor intensity, and achieve the effect of improving mechanical properties, increasing mechanical value, and increasing impact strength

Active Publication Date: 2019-04-05
HIB TRIM PART SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method is labor intensive and therefore expensive

Method used

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  • Method for producing natural fiber reinforced plastic parts

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Embodiment Construction

[0028] exist figure 1 In a is shown a schematic top view of one of the many holes 10 of a flat die pelletizer. Natural fibers 20 are placed in the flat die pelletizer and extend over the edge portion of the hole 10 . In addition, the thermoplastic and / or thermosetting material with lubricant is processed into the form of micro-particles 30 such that the natural fibers 20 and the micro-particles 30 are in a state of disordered mixing. according to figure 1 Schematic side view of b, the natural fibers 20 and the micro-particles 30 are pressed through the hole 10 by a punch not shown, wherein the micro-particles 30 partially surround the natural fibers 20 and are collected by the micro-particles 30 Natural fibers 20 produce bends of up to 180°. The micro-particles 30 serve as an aid for the entry of the natural fibers 20 into the corresponding pores 10 of the granulation die. The process is carried out in a cold state without actively introducing heat. exist figure 1In c is...

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Abstract

The invention relates to a method for producing a natural fiber-reinforced plastic part, wherein as the starting material natural fibers 5-120 mm in length, a thermoplastic and / or a duroplastic and a lubricant, especially wax, are pelletized without extrusion into long-fiber pellets by cold-forming and the long-fiber pellets are then feed for direct processing into a standard injection molding machine for injecting the plastic part.

Description

technical field [0001] The invention relates to a method for producing natural fiber reinforced plastic parts. Background technique [0002] Besides glass fiber reinforced plastics, natural fiber reinforced plastics have been known for many years and are used in various ways. Here, the thermoplastic, natural fiber-filled plastic granules used mostly consist of up to 45% of short natural fibers, at least 50% of mineral oil-based polymers or biopolymers and up to 10% of additives (including 5 % of adhesion promoter) composition. These ingredients are mostly thermally mixed, granulated and cooled in the extruder at about 180° C. in separate working processes. During this process the natural fibers are significantly shortened and firmly bonded to the polymer by means of adhesion promoters. Such a method is disclosed, for example, in DE 10 2008 046 770 A1. [0003] For processing in an injection molding machine, it is generally customary to first produce plastics raw material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/00B29C70/02
CPCB29B9/14B29B7/90B29B7/92B29B9/08B29B9/16B29C45/0001B29C45/0005B29C2045/0091B29K2023/12B29K2105/08B29K2105/251B29K2311/10B29K2491/00B29K2995/0089C08L23/12
Inventor U·施纳贝尔
Owner HIB TRIM PART SOLUTIONS