Glued lost foam casting pattern assembly

Details Glued lost foam casting pattern assembly Glued lost foam casting pattern assembly

2008-01-15

2008-01-15

Lin, Kuang Y. (Department: 1725)

Metal founding

Means to shape a forming surface

Pattern

C164S034000, C164S045000

Reexamination Certificate

active

07318468

ABSTRACT:
Lost foam pattern assemblies formed by gluing together a plurality of EPS foam pattern segments with a polystyrene-like glue comprising an aromatic resin that has a molecular weight less than 10,000 and thermally degrades at temperatures no greater than said EPS. The glue contains sufficient first plasticizer, miscible with the resin, to impart a viscosity of about 0.1 to 5 PaS @ about 100-135° C. to the glue. The glue may optionally include a second, limited-miscibility, plasticizer to accelerate the hardening rate and increase the ultimate rigidity of the glue.

REFERENCES:
patent: 2002-307133 (2002-10-01), None

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