Process for making a molded porous fluoroplastic resin material

Details Process for making a molded porous fluoroplastic resin material Process for making a molded porous fluoroplastic resin material

1983-08-25

1987-09-08

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

7386323, 264 49, 264127, C08J 924, C08J 926, C01N 114, B21B 4908

Patent

active

046922873

ABSTRACT:
A lysimeter for collecting soil water which is truly representative of the soil water contained in the soil at selected locations. The lysimeter contains a chamber and a filter section which is a rigid, porous fluoroplastic and through which moisture from the soil surrounding the lysimeter may pass into the chamber. The invention includes the rigid porous thermoplastic resin, a process for making the resin and a process for using the lysimeter to recover soil moisture in the lysimeter chamber.

REFERENCES:
patent: 3054761 (1962-09-01), Moore et al.
patent: 3556161 (1971-01-01), Roberts
patent: 3843570 (1974-10-01), Murayama

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