Filter for extruder

Abstract

The invention provides a filter for an extruder. The filter achieves functions of protecting a filter main body (1), ensuring the intensity of a perforated plate (2), reducing pressure loss in a filtering process and preventing cleaning deterioration and weight increase. The filter for an extruder comprises a filter main body (1), a perforated plate (2) supporting the filter main body (1) from the downstream side and comprising a plurality of through holes (23) forming paths of a high molecular material and a support body (3) supporting the perforated plate (2) from the downstream side. The support body (3) is composed of a frame section (31) which can be pressed against the outer diameter part of the perforated plate (2) and a plurality of beam parts (32) extending the inner circumferential side from the frame section (31).

Description

technical field [0001] The present invention relates to a filter which is installed in an extruder for continuously extruding a polymer material such as a rubber material for molding or a synthetic resin material for molding, and removes foreign substances in the material. Background technique [0002] In the filtering process, the mixture of rubber materials for molding (hereinafter referred to as "rubber materials") is extruded through an extruder so as to pass through a filtering device called a filter, and foreign substances are removed through the filter. [0003] Figure 6 A conventional filter 100 is shown, that is to say, this filter 100 has a structure in which a filter body 101 made of a mesh material is clamped between a porous plate 102 and a front plate 103, and a rubber material is made from Figure 6 In (b), it is arranged so that the left side passes to the right side. In order to use the filter 100 to filter the rubber material, a very large pressure is requ...

AI Technical Summary

Problems solved by technology

However, there is a problem that if the diameter of the through-hole 102a (103a) is smaller, when rubber clogging occurs here, it becomes more difficult to remove the clogged rubber material (deterioration of cleanability), and if the through-hole 102a ( If the sum of the opening areas of 103a) is larger, the strength of the perforated plate 102 is lower.

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