Molding method for magnetic tape cassette
US5049337A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Sep 29, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/14827
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for image-transfer molding half portions of a casing body of a magnetic tape cassette in which no portions of an image transfer film are left in the cassette holes. The image transfer film includes a base layer, a peeling layer, a protective layer, an ink layer, and an adhesive layer. A band of the image transfer film is pinched between dies for molding said half portion, with the adhesive layer positioned so as to abut an outer surface of the molded half portion. A pair of pins is placed in the dies in a position where a hole is to be formed in the half portion, with an end of one of the pins having a peripheral edge portion projecting in a direction parallel to the longitudinal axis of the pin and forming a recess receiving the end of the other of said pins with a portion of the image transfer film sandwiched therebetween. The ends of the pins cooperate to sever the image transfer film along the peripheral edge except for the base layer so that the base layer can be peeled away leaving no portions of the image transfer film in the holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.