Controlled porosity of uncured reinforced thermo-setting plastic

Details Controlled porosity of uncured reinforced thermo-setting plastic Controlled porosity of uncured reinforced thermo-setting plastic

1977-10-28

1979-01-02

Lazarus, Richard B.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Sonic or supersonic wave energy

83171, 83701, 264 23, 264156, 425290, B29C 1710

Patent

active

041325192

ABSTRACT:
The creation of controlled hole sizes and locations in uncured reinforced thermo setting plastic material by mechanically perforating the uncured material and "B" staging the material surrounding the perforation by sonic vibration of the mechanical perforating device.

REFERENCES:
patent: 3468203 (1969-09-01), Armelin et al.
patent: 3719736 (1973-03-01), Woodruff
West German Offenlegungsschrift 2611931, 9-1977.

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