Covering film for casting process by vacuum sealed molding

Details Covering film for casting process by vacuum sealed molding Covering film for casting process by vacuum sealed molding

1978-10-20

1980-04-22

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

106 3822, 106 3825, 164 33, 264300, 264338, 428332, B32B 702, B22C 912

Patent

active

041996410

ABSTRACT:
A covering film containing a thermoplastic resin productive of burnt dregs and a thermoplastic resin not productive of burnt dregs moderately disperses in the refractory filler of the mold and forms a relatively thin shell layer near the wall defining the mold cavity in order to successfully avoid generation of mold destruction and sand inclusion and streamline the whole casting process.

REFERENCES:
patent: 3802902 (1974-04-01), Turner et al.
patent: 3880949 (1975-04-01), Villa
patent: 4043376 (1977-08-01), Kasai et al.
patent: 4088808 (1978-05-01), Cornwell et al.

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