Method and apparatus for manufacturing a container having an inner end closure

Patent 4599123 Issued on July 8, 1986. Estimated Expiration Date:

July 8, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2423965

2988967

3194479

3460310

3520751

Apparatus for application of sealant to can lids
Patent #: 4262629
Issued on: 04/21/1981
Inventor: McConnellogue , et al.

Process for closing containers and foil membrane therefor Patent #: 4264316
Issued on: 04/28/1981
Inventor: Knudsen

Inventor

Christensson, Od W.

Assignee

Esselte PAC Aktiebolag (SE)

Application

No. 06/414056 filed on 09/02/1982

US Classes:

156/69, Application of end closures to containers156/273.7, Applying pressure before electrical, magnetic, or radiant energy156/275.1, Only part of containing lamina surfaces bonded; e.g., seaming, etc.156/275.7, With application of adhesive156/73.1, With sonic or ultrasonic treatment229/5.8, Pressed bottom or top229/5.82, Metal foil493/109, With bending to secure closure53/328, Plunger structure53/361, Fluid pressure or resilient element53/362, Confined elastomer block53/489By plugging closure into container

Examiners

Primary: Kimlin, Edward C.
Assistant: Cashion, Merrell C. Jr.

Attorney, Agent or Firm

Larson and Taylor

International Classes

B29C 65/02 (20060101)
B29C 65/00 (20060101)
B65B 7/28 (20060101)
B29C 65/04 (20060101)
B29C 65/08 (20060101)

Abstract

A method and an apparatus for manufacturing a tin-like container comprising a sleeve formed body or jacket (1) and at least one end closure (2, 3), in which the jacket (1) and the end closure or the end closures (2, 3) at the interior side of the container has a layer (5) of a constant heat weldable, high frequence weldable or ultrasonic weldable material, and in which the container is closed under sealed condition in that the end closure (2, 3) is formed with an edge flange extending all around the end closure and is introduced in the jacket (1) and is welded thereto. The introduction of the end closure (2, 3) in the jacket (1) is made by means of a press piston (14) having a press cone (15) which is formed with an expandable means (15d; 29). In the non-expandive condition the expandable means (15d; 29) is located inside of the cone surface, and it is adapted to become expanded before or at the same time as being welded to the innersurface of the container, whereby a resilient additional pressure line is obtained round the entire weld surface and along at least some part of the height of the weld surface.