Punch for producing holes in foamed thermoplastic containers

Details Punch for producing holes in foamed thermoplastic containers Punch for producing holes in foamed thermoplastic containers

1975-04-10

1976-12-14

Yost, Frank T.

Cutting

Tool or tool with support

Cutting couple type

83 54, 83192, B26F 114

Patent

active

039968324

ABSTRACT:
A hole punch having a curved cutting edge of generally the same contour as the surface being punched produces clean holes in wall of foamed plastic containers.

REFERENCES:
patent: 1895589 (1933-01-01), Spatta
patent: 2781843 (1957-02-01), Comstock
patent: 2829983 (1958-04-01), De Gain
patent: 3772946 (1973-11-01), Sarra
patent: 3848497 (1974-11-01), Lancaster et al.

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