Roll package
US5452797A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1994 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Aug 4, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C3/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A package for a roll of photosensitive material coiled on a central core in convolutions of increasing radius and having generally flat end surfaces, which comprises an opaque moisture-proof leader joined to the free end of the roll of photosensitive material and wrapped circumferentially at least once around the roll and being of sufficient width to cover the roll, a pair of side lips extending beyond the side edges of the leader and being formed either by a strip of tearable adhesive material attached to each side edge of the leader and which overlap the side edges of the leader or by a strip of tearable adhesive material attached to the leader and which overlaps each side edge of the leader, said pair of lips having an adhesive on their top most surface, the said pair of edge lips being folded down over the two ends of the roll, together with two annular end covers for the ends of the roll which are adhered to the adhesive covered folded down side lips thereby holding the end covers in place over the ends of the roll. Preferably the opaque moisture-proof leader is wrapped at least twice around the roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.