Method and apparatus for forming plastic tube with spiral inlayed exterior design
US5639408A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 1995 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | May 23, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/608
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A one-piece tube multi-pack and its method of manufacture are disclosed. The one-piece tube multi-pack includes an elongated thin-walled tubular element made of transparent flexible plastic material with inner and outer peripherally extending walls. At least one thin-walled web section is integrally connected to the inner peripheral extending wall of the tubular element and has greater flexibility than the tubular element in order to adjustably accommodate a plurality of separate discrete products positioned on opposite sides of the at least one integral web section. The at least one integral thin-walled web section may be connected to the inner peripherally extending wall of the tubular element at different relative locations, for example, in a spiral or curvilinear or other shaped path throughout the tubular element. The method for making the one-piece tube multi-pack includes the extrusion of the elongated thin-walled tubular element and the at least one thin-walled web section with greater flexibility than the tubular element. When formed to extend at different relative locations throughout the tubular element, such as a spiral or curvilinear or other shaped path, the tubular e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.