Method of maintaining a low residue open-cell felted foam

Details Method of maintaining a low residue open-cell felted foam Method of maintaining a low residue open-cell felted foam

1995-05-10

1996-10-08

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264344, B29C 4302

Patent

active

055628761

ABSTRACT:
Open-Cell urethane foam is thoroughly dried in a convection oven or controlled atmosphere and then compressed with heat to a felt immediately. Alternatively, the dried foam is sealed in a plastic bag until the felting step. The amount of non-volatile residue is significantly reduced to produce a foam for use to contain ink in an ink jet cartridge.

REFERENCES:
patent: Re32032 (1985-11-01), Pettingell
patent: 2961710 (1960-11-01), Stark
patent: 3978855 (1976-09-01), McRae et al.
patent: 4454248 (1984-06-01), Pollock et al.
patent: 5104908 (1992-04-01), Allred et al.

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