On-line fluid injecting method

Details On-line fluid injecting method On-line fluid injecting method

1979-02-01

1981-02-17

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

264561, 264566, 264101, 2642096, 264211, 264232, 264330, 264340, B29C 2500, B28B 2194

Patent

active

042514770

ABSTRACT:
In the method of the present invention preferably an apparatus is connected directly on-line with an extruder to inject fluid into or to remove fluid from a fresh extrusion on a continuous basis as the latter is extruded. In one case the fluid injected is a catalyst that causes curing of a mixture of particulate matter and resin binder. In the method one part of a two part binder mechanism is mixed with a particulate material, and the mixture is extruded on a continuous basis. The second part of the binder then is injected into the fresh extrusion on a continuous basis downstream of the extruder output to cure the extrusion. The extruder die also may include fluid injecting paths, on the one hand, for injecting lubricant or, on the other hand, for injecting of the second binder part, e.g. catalyst, into the relatively less dense material near the upstream end of the die.

REFERENCES:
patent: 1858620 (1932-05-01), Frandsen
patent: 2616126 (1952-11-01), Merck et al.
patent: 2620515 (1952-12-01), Olson
patent: 2690592 (1954-10-01), Schanz
patent: 3054142 (1962-09-01), Hinderer et al.
patent: 3069727 (1962-12-01), Shramek
patent: 3549737 (1970-12-01), Schulze
patent: 3686070 (1972-08-01), Williams

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