Bottle for carbonated drink
US4421804A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1981 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Sep 11, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a bottle for a carbonated drink, which is formed by biaxial draw-blow molding of a polyester containing a surface active agent and being composed mainly of ethylene terephthalate units, wherein at least the barrel wall portion of the bottle is molecularly oriented biaxially so that the density is at least 1.34 g/cm.sup.3 as measured at 20.degree. C., and the surface active agent is distributed in the surface of the barrel wall portion so that the contact angle of the surface of the barrel wall portion to water is not larger than 76.degree.. In this bottle, the speed of transfer of carbon dioxide gas from the liquid phase of the drink to the gas phase at the time of opening the bottle is controlled to a very low level. Accordingly, occurrence of the cap missile phenomenon at the time of removing the cap from the bottle or reduction of the carbon dioxide content in the drink at the time of repeating sealing and opening of the bottle can effectively be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.