Microporous elastomeric material and method of manufacture

Details Microporous elastomeric material and method of manufacture Microporous elastomeric material and method of manufacture

1979-02-26

1980-10-07

Anderson, Philip

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

101327, 1014011, 264 453, 264 49, 428304, 428309, 428401, 428906, 428909, B41J 2720, B29D 2700

Patent

active

042269113

ABSTRACT:
A method of making a microporous elastomeric material having interconnecting cavities and which may be used as an ink dispensing article is provided wherein such material is made by the steps of admixing fibrous material and particles of hydrated magnesium sulfate in an elastomeric matrix material, shaping the material, curing the elastomeric matrix material, simultaneously causing liberation of water of crystallization from the hydrated magnesium sulfate which provides a blowing effect resulting in the formation of interconnecting passages between the particles from the cured material.

REFERENCES:
patent: 2467214 (1949-04-01), Luaces
patent: 2819993 (1958-01-01), Gregory
patent: 2822627 (1958-02-01), Seiberling
patent: 3928521 (1975-12-01), Haren et al.
patent: 4025685 (1977-05-01), Haren et al.

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