Thermoplastic composite layered squeeze tube and method of making same
US5238148A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Aug 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/139
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A thermoplastic tube, and method for forming such a tube, has a tube body portion formed from an inner layer of thermoplastic material, a barrier layer, and an outer layer of thermoplastic material. The outer layer does not extend completely about the periphery of the tube body and a strip of thermoplastic material having the same composition as the inner layer, fills each gap in the outer layer to form a smooth surface about the tube. The strip may be transparent or of a color different than the color of the outer layer. In a preferred tube, a first layer of adhesive material is provided between the inner layer and the barrier layer, and a second layer of adhesive material is provided between the barrier layer and the outer layer and strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.