Long fiber bundle melt impregnation system

Abstract

The invention provides a long fiber bundle melt impregnation system. The impregnation system includes a driving unit and at least one group of matched and paired driving covered rolls, the driving unit provides power for the driving covered rolls, the driving covered rolls are composed of a first driving roll and a second driving roll, a slit for a long fiber bundle to go through is left between the first driving roll and the second driving roll, the first driving roll and the second driving roll respectively contact with the long fiber bundle in the slit between the rolls when the first driving roll and the second driving roll rotate, and resultant force generated by mutual chimerism of the first driving roll and the second driving roll promotes the long fiber bundle in the slit between the rolls to move. The long fiber bundle melt impregnation system realizes the purposes of reduction of the thickness of the long fiber bundle in the impregnation process and increase of the filament dispersion uniformity of the long fiber bundle, and reaches less fiber breaking loss, full infiltration, uniform dispersion and high-speed stable production in order to obtain a long fiber reinforced thermoplastic plastic with excellent performances.

Description

technical field [0001] The invention relates to the field of forming processing equipment, in particular to a long fiber bundle melting impregnation system. Background technique [0002] Modified plastics is a field of plastics industry involving a wide range of fields, high technological content, and can create huge economic benefits, and plastic modification technology has penetrated into the raw materials and molding processes of almost all plastic products. The development prospect of modified plastics has the following trends: engineering of general plastics, high performance of engineering plastics, low cost of special engineering plastics, application of high technology such as nanocomposite technology, green, environmental protection, low carbon and recycling of modified plastics. use. [0003] Long Fiber Reinforced Thermoplastics (LFT) is a high-performance new material that has made breakthroughs in recent years, which can make up for or replace many shortcomings ...

AI Technical Summary

Problems solved by technology

[0020] Aiming at the disadvantages of large fiber breakage, insufficient infiltration and poor dispersion uniformity still existing in the structural design of the fixed position structure and the wheel train structure of the existing melting impregnation system, the present invention provides a method that utilizes a drive unit to provide the rotational power of the set rollers. The fusion impregnation system in which the driving sleeve rollers are fitted together to generate a resultant force to push the long fiber bundles in the gap between the rollers to move, the fusion impregnation system simultaneously realizes the reduction of the thickness of the long fiber bundles and the increase of the dispersion of the long fiber bundles during the impregnation process Uniformity effect, to achieve the effect of less fiber breakage, sufficient infiltration, uniform dispersion, high-speed and stable production

The melt impregnation system provided by the invention can improve the impregnation effect of long fibers at the same time, so that the long fiber monofilaments in the final product can be completely and fully infiltrated in the thermoplastic resin (the long fiber monofilaments are completely and uniformly distributed in the thermoplastic resin), and can also improve Impregnating speed, solving the technical problems that the existing technology has not solved

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