Method and device for extruding continuous long glass fibers

Abstract

The invention discloses a method and a device for extruding continuous long glass fibers. The continuous long glass fibers and a plastic base body are extruded through an independent runner; in an extrusion process, the continuous long glass fibers are moved forwards in the form of sine wave in the independent runner and are finally extruded through a mold head, so the continuous long glass fibers are uniformly distributed in a product. The way of arranging an isolation block in the independent runner, the continuous long glass fibers are moved forwards in the form of sine wave in the independent runner through the isolation block, the independent runner avoids mutual interference between the continuous long glass fibers, and the continuous long glass fibers can be effectively prevented from being broken through the movement in the form of sine wave, so the production efficiency is improved; and a structure of a square cavity is arranged in the independent runner, so after the square cavity is taken out, the continuous long glass fibers penetrate into the square cavity and then are placed into the independent runner, the operation of placing the continuous long glass fibers is simplified, and the device is convenient to use.

Description

technical field [0001] The invention relates to a polymer processing method and device, in particular to a method and device for realizing continuous long glass fiber extrusion. Background technique [0002] Adding glass fiber to the polymer for co-extrusion can strengthen the polymer, especially the continuous long glass fiber, which can have a very good reinforcing effect on the extruded polymer. However, since the advancement of the continuous long glass fibers in the flow channel is a rather irregular activity during the extrusion process, mutual interference between the continuous long glass fibers is likely to occur, which easily leads to difficulties in the extrusion of the glass fibers and makes the glass fibers The uneven distribution of fibers in the product affects the quality of extrusion. Although there is a method of using an independent flow channel to improve the processing of continuous long glass fibers, the method of feeding glass fibers into the independ...

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Problems solved by technology

However, since the advancement of the continuous long glass fibers in the flow channel is a rather irregular activity during the extrusion process, mutual interference between the continuous long glass fibers is likely to occur, which easily leads to difficulties in the extrusion of the glass fibers and makes the glass fibers Uneven distribution of fibers in the product affects the quality of extrusion

Although there is a method of using an independent flow channel to improve the processing of continuous long glass fibers, the method of feeding glass fibers into the independent flow channel is complicated, and the advancing state of the glass fiber in the flow channel also makes it prone to breakage. It is difficult to extrude stably for a long time

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