Heat sealed photo album page and method of making same
US4244762A · kind A · utility
25Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 1979 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | May 10, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24826
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A photographic album page comprising a fibrous centrally disposed lamina and a pair of overlying clear synthetic resinous laminae. Pockets are formed by ultrasonic sealing of the clear laminae together through the fibrous lamina which disintegrates under the generated heat of sealing. The pockets are thus formed as a continuous sealing operation at the same time the page is laminated by sealing in broken lines, whereby the fibrous lamina retains its structural integrity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.