Preparation of dunnage material
US3933959A · kind A · utility
33Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1972 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | Sep 5, 1992 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2976
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Generally linear foamable strandular particles which are asymmetrical about a plane generally containing the longitudinal axis provide a desired curled dunnage material when heated to cause foaming. A wide variety of methods may be used to introduce the desired asymmetry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.