Laminated case for magnetic disk and method of manufacturing sam

Details Laminated case for magnetic disk and method of manufacturing sam Laminated case for magnetic disk and method of manufacturing sam

1989-01-17

1990-03-27

Lesmes, George F.

Special receptacle or package

For body treatment article or material

Bandage, drape or dressing

156 731, 1565802, B65D 8530, B32B 3100

Patent

active

049113011

ABSTRACT:
A laminated case for a magnetic disk having a pair of outer laminae and a spacer lamina sandwiched therebetween. The spacer lamina adds rigidity to the laminated case and controls the height of a cavity in which the magnetic disk is located. A liner for wiping the disk is attached to each of the outer laminae. The liner has a free hanging section which provides the wiping action. The three laminae are ultrasonically welded together by a method which employs a fixture and an ultrasonic welding horn. The method permits the magnetic disk to be tested and discarded without sacrificing the laminated case.

REFERENCES:
patent: 3440118 (1969-04-01), Obeda
patent: 3668658 (1972-06-01), Flores
patent: 3733238 (1973-05-01), Long
patent: 3864755 (1975-02-01), Hargis
patent: 4251843 (1981-02-01), Masuyama
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patent: 4525758 (1985-06-01), Nakagawa
patent: 4648002 (1987-03-01), Mroz
patent: 4699268 (1987-10-01), Oishi
"Application of Ultrasonics to Thermoplastic Materials," Mecasonic.
"Cartridge for Magnetic Disk"; IBM Technical Disclosure; F. K. King et al.; 12-76.

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