Panel type masking member

Details Panel type masking member Panel type masking member

1992-06-02

1993-04-27

Van Balen, William J.

Stock material or miscellaneous articles

Sheet, web, or layer weakened to permit separation through...

428 40, 428159, 428167, 428172, 428178, 428198, 4283144, 4283173, 4283177, 4283188, 428352, B32B 326, B32B 330, B32B 712

Patent

active

052060691

ABSTRACT:
A panel type masking member comprising a foamed polystyrene panel made by expandable bead molding wherein said foamed polystyrene panel has traces of opening parts of breathing paths on both sides thereof wherein said trace(s) on at least one side is(are) dent(s), and a mold used for molding of said panel type masking member comprising a fixed molding part and a movable molding part wherein said movable molding part and said fixed molding part have opening parts of breathing paths on their surface(s) thereof and said opening part(s) of breathing path(s) of said movable molding part and/or said fixed molding part rise(s) from said surfaces thereof; are provided in the instant invention.

REFERENCES:
patent: 4528221 (1985-07-01), Komatsuzaki et al.
patent: 4714633 (1987-12-01), Horiki et al.
patent: 4759959 (1988-07-01), Guy
patent: 4835026 (1989-05-01), Horiki et al.

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