Synthetic resin material, particularly surface material for phonograph records with a photograph or picture
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United States of America Patent
Stats
-
Mar 6, 1984
Grant Date -
N/A
app pub date -
Sep 2, 1981
filing date -
Feb 17, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A surface material for phonograph records prepared by subjecting a copolymeric vinyl resin powder incorporated with a small amount of a stabilizer to the hot blending treatment, melt-kneading the product under heating, cooling the same to ambient temperature to form a mass, granulating the mass, freezing the resulting granules with liquid nitrogen and grinding the frozen granules into powders; and a phonograph record prepared by adhering a film of the surface material to the surface of a record-forming disc, having a photograph or picture printed thereon, by way of fusion under heating and forming a microgroove thereon.
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