DE3246857

An optical disc includes a pair of substrates, at least one of which has predetermined information pits formed on one surface. The two substrates are bonded with a hot-melt adhesive having (1) a softening point of not more than 140 DEG C., (2) a dry tensile adhesive strength of not less than 1 kg/cm...

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Bibliographische Detailangaben
1. Verfasser:	KATO, HIROSHI, SAITAMA, JP
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS PHYSICS TRANSPORTING
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Beschreibung
Zusammenfassung:	An optical disc includes a pair of substrates, at least one of which has predetermined information pits formed on one surface. The two substrates are bonded with a hot-melt adhesive having (1) a softening point of not more than 140 DEG C., (2) a dry tensile adhesive strength of not less than 1 kg/cm2 at 20 DEG C. and (3) a melt viscosity of not more than 1,000 P at 160 DEG C.