Method of making infusion package
US4417433A · kind A · utility
11Cited by
16References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1981 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Apr 28, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B29/028
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An infusion package that has a natural, expanded, unflattened or three-dimensional condition is folded to a flattened configuration to pack in quantity. The expanded condition gives greater internal volume by which infusion is improved and quickened. A pull string, affixed near the flattening folds, unfolds the package from its flattened configuration. To make the package, a tube can be formed into a generally tetrahedral shape by forming seams across it, each at 90.degree. to the preceding seam, severing the package so formed, and folding inward across one end seam to the tetrahedron to effect the flattening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.