Apparatus for wrapping drinking straws
US6212860A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Jul 20, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/067
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Sipping straws are confined in discrete envelopes while advancing in a single file of spaced-apart straws through a wrapping station. The envelopes are obtained from a continuous strip of wrapping paper which is conveyed to the wrapping station in the direction of advancement of the file of spaced-apart straws and is draped around the straws in such a way that one of its longitudinally extending marginal portions overlies and adheres to the other marginal portion with simultaneous formation of a seam rather than an outwardly extending fin. The thus obtained tubular wrapper is thereupon severed in the gaps between successive spaced-apart straws, and the end portions of the thus obtained discrete envelopes are sealed by knurling, e.g., simultaneously with severing of the tubular wrapper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.