Filter for filtering molten resin and a filtering device for mul

Details Filter for filtering molten resin and a filtering device for mul Filter for filtering molten resin and a filtering device for mul

1994-03-29

1996-11-26

Walker, W. L.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

2104932, 2104935, 2104941, 2104973, 425199, B01D 2921

Patent

active

055782086

ABSTRACT:
A filter for flitrating molten resin of the invention includes: a cylindrical filtering member formed with a large number of projections and recesses; and radially arranged rods in a supporter for supporting the cylindrical filtering member at arc-shaped projected portions, and is constructed such that molten resin material is allowed to pass through the filtering member at arc-shaped recessed portions. In this arrangement, it is possible to enhance the resistance of thermoplastic molten resin filter against filtering pressure as well as to ensure a large filtering area. Further, the filter may be constructed such that the cross-section of the aforementioned cylindrical member is made greater from the upstream side toward the downstream side. By this configuration, the flow rate of molten resin passing through the unit area of the filtering member is made uniform and consequently the collecting capacity of foreign substances is increased.

REFERENCES:
patent: 2460084 (1949-01-01), Hebo
patent: 3224590 (1965-12-01), Nord et al.
patent: 3233739 (1966-02-01), Zievers et al.
patent: 3240347 (1966-03-01), Zievers et al.
patent: 3291310 (1966-12-01), Marvel
patent: 3326382 (1967-06-01), Bozek et al.
patent: 3670898 (1972-06-01), Fournier
patent: 3746642 (1973-07-01), Bergstrom
patent: 4019987 (1977-04-01), Krasnow
patent: 4332541 (1982-06-01), Anders
patent: 4453905 (1984-06-01), Bennett
patent: 4597870 (1986-07-01), Lambertus

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