Method and apparatus for forming a container for liquids
US4311476A · kind A · utility
Inventor
Key dates
| Filing date | Jul 18, 1979 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Jul 18, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B50/81
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus and method is disclosed for forming a liquid-tight container having a rectangular cross-section formed from a one-piece, T-shaped blank of paperboard material. The carton preferably includes an access flap and straw element on one side thereof which, when manually lifted, exposes an end of the straw element from which the contents of the carton may be consumed by a user. The apparatus is compact in nature, possessing relatively few transport mechanisms which advance the T-shaped carton blank through a plurality of work stations. A novel method and apparatus for serially applying the straw element and access panel to the carton blank is disclosed, wherein the straw element and a length of polyethylene coated Mylar tape is automatically bonded to the carton blank upon a rotating heat sealing and alignment drum. A conveyor for collating a plural number of the carton blanks about a forming mandrel is also provided, and is positioned transversely to the remainder of the apparatus thereby significantly reducing the overall size of the apparatus. An ultrasonic welder bonds the side seams and end closure panels of the container upon a rotating crossbar mandrel which eliminates…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.