Device for producing physically expanded structural foams...

Details Device for producing physically expanded structural foams... Device for producing physically expanded structural foams...

2007-11-13

2007-11-13

Davis, Robert (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

Including feeder to supply stock to charger

C425S00400R, C425S00400R, C425S130000, C425S204000, C425S208000

Reexamination Certificate

active

10531748

ABSTRACT:
Foamed molded articles can be produced during an injection molding process, among other things, by utilizing physical blowing agents. Existing technologies differ to the greatest possible extent in the manner how the blowing agent is introduced into the melt. One possibility is to supply the blowing agent via mixing elements (9) from porous or permeable material that are provided across the screw piston (1) and which by means of a suitable blowing agent input unit load and homogeneously charge the melt with blowing agent during the metering phase of the polymeric material. The resulting single phase polymer/blowing agent mixture, when injected in to an injection mold tool, produces due to a reduction in pressure, a foam-textured part.

REFERENCES:
patent: 2848739 (1958-08-01), Henning
patent: 3902704 (1975-09-01), Ishibashi et al.
patent: 3972970 (1976-08-01), Taylor
patent: 4390332 (1983-06-01), Hendry
patent: 5297948 (1994-03-01), Sadr
patent: 5975871 (1999-11-01), Kudert et al.
patent: 6652254 (2003-11-01), Shimura et al.
patent: 6949208 (2005-09-01), Kawauchi et al.
patent: 20 53 646 (1972-05-01), None
patent: 2 402 203 (1974-07-01), None
patent: 101 50 329 (2003-05-01), None
patent: 1 072 375 (2001-01-01), None
patent: 1 256 430 (2002-11-01), None
patent: 1 356 420 (2003-10-01), None
patent: WO 02/054339 (2002-07-01), None
patent: WO 02/055282 (2002-07-01), None
WordNET definition for “permeable” [online], [retrieved on Feb. 23, 2007]. Retrieved from the Internet http://wordnet.princeton.edu/perl/webwn.

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