Low permeability spiral fabric and method

Details Low permeability spiral fabric and method Low permeability spiral fabric and method

1983-06-08

1985-01-01

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34116, 34123, 34243R, 139383A, 474260, 428222, F26B 1308

Patent

active

044909250

ABSTRACT:
A fluid permeable fabric is disclosed having particular advantages as a dryer fabric for papermaking is disclosed. The fabric includes a number of helix A extending cross-wise in the fabric and joined together along the length dimension by pintles 38. Crevice spaces 40 formed by intermeshing bend portions extending into the loop openings C are closed by a contoured filler strip B. The contoured filler strip occupies the loop openings and includes contoured edges 56 which penetrate and occupy a substantial portion of the crevice spaces. A fabric having a low permeability is thus provided. An enlarged heat radiating surface 52 facing the paper side 39 of the fabric increases the heat transfer occurring in the paper web W to expedite drying. Crevice space 40 and tapered edges 56 of the filler element provide a guiding function which facilitates filler insertion in the loop openings.

REFERENCES:
patent: 4362776 (1982-12-01), Lefferts et al.
patent: 4381612 (1983-05-01), Shank
patent: 4392902 (1983-07-01), Lefferts
patent: 4395308 (1983-07-01), Dawes

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